Electronics Research Laboratory
Dept. of Microelectronics

Marco Spirito

Publications

  1. Advances in Hardware and Measurement Techniques to Enable Better Millimeter-Wave Device Characterization and Modeling
    Spirito, Marco; Martens, Jon;
    IEEE Microwave Magazine,
    Volume 26, Issue 4, pp. 32-44, 2025. DOI: 10.1109/MMM.2024.3524849
    Keywords: ... Radio frequency;Performance evaluation;Microwave measurement;Millimeter wave devices;Measurement techniques;Microwave devices;Microwave theory and techniques;Hardware;Foundries;Frequency measurement.

  2. Non-Contact Dielectric Spectroscopy of Multi-Layered Substrates: Towards Organ-on-Chip Applications
    Hosman, Tim; Mastrangeli, Massimo; Spirito, Marco;
    IEEE Journal of Electromagnetics, RF and Microwaves in Medicine and Biology,
    pp. 1-8, 2025. DOI: 10.1109/JERM.2025.3538953
    Keywords: ... Probes;Sensors;Permittivity measurement;Permittivity;Sensitivity;Dielectrics;Thickness measurement;Position measurement;Phantoms;Noise measurement;Dielectric spectroscopy;label-free;micro-physiological systems;non-contact;open-ended coaxial probe;organ-on-chip;proof-of-principle;reflectometer;sensing;single-layer extraction.

  3. A Core-Shell Lens for Antenna On-Package Integration at D-Band
    Rooijen, Nick van; Alonso-delPino, Maria; Bueno, Juan; Bechrakis Triantafyllos, Alexandros; Sberna, Paolo M.; Spirito, Marco; Llombart, Nuria;
    IEEE Transactions on Antennas and Propagation,
    Volume 72, Issue 8, pp. 6195-6208, 2024. DOI: 10.1109/TAP.2024.3417628
    Keywords: ... Lenses;Antennas;Antenna feeds;Permittivity;Geometry;Bandwidth;Antenna arrays;D-band;dual-lens antenna;lens antenna;millimeter-wave antenna;on-package antenna.

  4. Demonstration of Near Diffraction-Limited Terahertz Images Using a CMOS-Integrated Chessboard Array
    Hoogelander, Martijn; van Dijk, Robbin; Spirito, Marco; Llombart, Nuria; Alonso-delPino, Maria;
    IEEE Transactions on Terahertz Science and Technology,
    Volume 14, Issue 4, pp. 531-536, 2024. DOI: 10.1109/TTHZ.2024.3387650
    Keywords: ... Imaging;Lenses;Image resolution;Cameras;Couplings;Image edge detection;Terahertz communications;Diffraction;Optical imaging;Diffraction-limited resolution;direct-detection;focal plane array (FPA);quasi-optical (QO) imaging system;silicon-integrated antenna array;terahertz imaging.

  5. A Near-Field Quasi-Optical Measurement Technique for Probe-Fed High-Gain Backside-Radiating Antennas
    Van Rooijen, Nick; Spirito, M.; Triantafyllos, A. Bechrakis; Llombart, N.; Alonso-delPino, M.;
    In 2024 IEEE/MTT-S International Microwave Symposium - IMS 2024,
    pp. 904-907, 2024. DOI: 10.1109/IMS40175.2024.10600366
    Keywords: ... Antenna measurements;Microwave measurement;Microwave antennas;Accuracy;Reflector antennas;Microwave theory and techniques;Calibration;Near-field measurement technique;Probe-fed antenna;backside radiating antenna;antenna in-package characterization;sub-THz frequency characterization;D-band.

  6. Chessboard Focal Plane Array for a CMOS-Integrated Terahertz Camera
    Hoogelander, Martijn; van Berkel, Sven; Malotaux, Eduard Satoshi; Alonso-delPino, Maria; Cavallo, Daniele; Spirito, Marco; Llombart, Nuria;
    IEEE Transactions on Terahertz Science and Technology,
    Volume 13, Issue 6, pp. 704-717, 2023. DOI: 10.1109/TTHZ.2023.3297072
    Keywords: ... Lenses;Apertures;Imaging;Antenna arrays;Silicon;Feeds;Cameras;CMOS technology;High-resolution imaging;Leaky wave antennas;Ultra wideband technology;CMOS antenna array;direct detector;focal plane array (FPA);high-resolution imaging;leaky-wave antennas;lens antenna array;passive imaging;terahertz (THz);ultrawideband.

  7. Electrically Small High Permittivity Lens Antenna Using Artificially Loaded Thermoplastics at 170 GHz
    Rooijen, Nick van; Alonso-delPino, Maria; Bueno, Juan; Spirito, Marco; Llombart, Nuria;
    In 2023 48th International Conference on Infrared, Millimeter, and Terahertz Waves (IRMMW-THz),
    pp. 1-2, 2023. DOI: 10.1109/IRMMW-THz57677.2023.10299096
    Keywords: ... Antenna measurements;Drilling;Slot antennas;Permittivity measurement;Prototypes;Plastics;Permittivity.

  8. A Tightly-Sampled Focal Plane Array in 2nm CMOS with Integrated Direct-Detectors for Terahertz Imaging Applications
    Hoogelander, M.; van Dijk, R.; Alonso-delPino, M.; Spirito, M.; Llombart, N.;
    In 2023 48th International Conference on Infrared, Millimeter, and Terahertz Waves (IRMMW-THz),
    pp. 1-2, 2023. DOI: 10.1109/IRMMW-THz57677.2023.10299266
    Keywords: ... Semiconductor device modeling;Terahertz wave imaging;Mutual coupling;Image resolution;Sensitivity;Apertures;Feeds.

  9. A Rigorous Analysis of the Random Noise in Reflection Coefficients Synthesized via Mixed-Signal Active Tuners
    Mubarak, Faisal; Munoz, Fabio; Spirito, Marco;
    In 2023 101st ARFTG Microwave Measurement Conference (ARFTG),
    pp. 1-4, 2023. DOI: 10.1109/ARFTG57476.2023.10279048
    Keywords: ... Additive noise;Tuners;Baseband;Uncertainty;Impedance measurement;Transfer functions;Reflection coefficient;S-parameter noise;frequency domain noise;residual-error;noise analysis;uncertainty analysis;vector network analyzer (VNA).

  10. Spectral Purity Evaluation of VNA Frequency Extenders to Enable Electronic Software-Based Power Control
    De Martino, C.; Lopez, J. Bueno; Spirito, M.;
    In 2023 101st ARFTG Microwave Measurement Conference (ARFTG),
    pp. 01-04, 2023. DOI: 10.1109/ARFTG57476.2023.10279333
    Keywords: ... Power measurement;Power control;Power system harmonics;Harmonic analysis;Software;Frequency measurement;Calibration;mm-wave;frequency extenders;spectral purity;device characterization;large-signal;s-parameter.

  11. Over-the-Air Characterization Techniques for Antenna-Coupled Direct-Detectors at Terahertz Frequencies
    Hoogelander, M.; Alonso-delPino, M.; Llombart, N.; Spirito, M.;
    In 2023 IEEE/MTT-S International Microwave Symposium - IMS 2023,
    pp. 919-922, 2023. DOI: 10.1109/IMS37964.2023.10187910
    Keywords: ... Antenna measurements;Microwave measurement;Terahertz wave imaging;Voltage measurement;Frequency modulation;Sensitivity;Microwave theory and techniques;Terahertz imaging;direct-detection;over-the-air measurement;antenna measurement;modulation;wideband measurement;antenna array.

  12. Impedance Standard Substrate Characterization and EM model definition for Cryogenic and Quantum-Computing Applications
    Shokrolahzade, Ehsan; Sebastiano, Fabio; Mubarak, Faisal; Babaie, Masoud; Spirito, Marco;
    In 2023 IEEE/MTT-S International Microwave Symposium - IMS 2023,
    pp. 557-560, 2023. DOI: 10.1109/IMS37964.2023.10188097
    Keywords: ... Temperature measurement;Kelvin;Cryogenics;Microwave devices;Transformers;Load management;Calibration.

  13. Reduced Calibration Error Employing Parametrized EM models and DC Load Extraction
    Shokrolahzade, Ehsan; De Martino, Carmine; Spirito, Marco;
    In 2023 100th ARFTG Microwave Measurement Conference (ARFTG),
    pp. 1-4, 2023. DOI: 10.1109/ARFTG56062.2023.10148882
    Keywords: ... Semiconductor device modeling;Resistors;Radio frequency;Analytical models;Perturbation methods;Calibration;Probes;Vector Network Analyzer;calibration;on-wafer;probe-level;Short Open Load Reciprocal;SOLR;Quartz.

  14. Calibration approaches in Multi-Node Antenna Characterization Setups
    Coesoij, R. A.; Musters, F. A.; Roos, D.; van Velden, T.; Spirito, M.;
    In 2023 100th ARFTG Microwave Measurement Conference (ARFTG),
    pp. 1-4, 2023. DOI: 10.1109/ARFTG56062.2023.10148881
    Keywords: ... Antenna measurements;Phased arrays;Microwave measurement;Systematics;Current measurement;Real-time systems;Calibration;[multi-probe;antenna measurement;over-the-air;scalar radiation pattern;dual-polarized;polarization;detector].

  15. A Four-Way Series Doherty Digital Polar Transmitter at mm-Wave Frequencies
    Mortazavi, Mohsen; Shen, Yiyu; Mul, Dieuwert; de Vreede, Leo C. N.; Spirito, Marco; Babaie, Masoud;
    IEEE Journal of Solid-State Circuits,
    Volume 57, Issue 3, pp. 803-817, 2022. DOI: 10.1109/JSSC.2021.3133861
    Keywords: ... Transformers;Power generation;Impedance;Transmitters;Resistance;Linearity;Baseband;Digital phase modulator (DPM);digital polar transmitter (DPTX);digital power amplifier (DPA);Doherty design guide;millimeter-wave transmitter (TX);power amplifier (PA);series Doherty combiner (SDC).

  16. First Demonstration of Dynamic High-Gain Beam Steering With a Scanning Lens Phased Array
    Bosma, Sjoerd; Van Rooijen, Nick; Alonso-Delpino, Maria; Spirito, Marco; Llombart, Nuria;
    IEEE Journal of Microwaves,
    Volume 2, Issue 3, pp. 419-428, 2022. DOI: 10.1109/JMW.2022.3179953
    Keywords: ... Lenses;Phased arrays;Arrayed waveguide gratings;Gratings;Antenna radiation patterns;Phase measurement;Beam steering;Beam steering;lens antennas;millimeter waves;phase shifting;phased arrays.

  17. Extending the Open-Short de-embedding frequency via metal-l on-wafer calibration approaches
    Esposito, C.; De Martino, C.; Lehmann, S.; Zhao, Z.; Mothes, S.; Kretzschmar, C.; Schröter, M.; Spirito, M.;
    In 2022 99th ARFTG Microwave Measurement Conference (ARFTG),
    pp. 1-4, 2022. DOI: 10.1109/ARFTG54656.2022.9896529
    Keywords: ... Radio frequency;Analytical models;Three-dimensional displays;Fixtures;Data models;Calibration;Topology;Calibration;De-embedding;mm-Wave;Open-Short.

  18. Diffraction-Limited Imaging Demonstration using a Silicon Integrated Array at Terahertz Frequencies
    Hoogelander, Martijn; Van Berkel, Sven; Malotaux, Satoshi; Alonso-delPino, Maria; Spirito, Marco; Neto, Andrea; Cavallo, Daniele; Llombart, Nuria;
    In 2022 47th International Conference on Infrared, Millimeter and Terahertz Waves (IRMMW-THz),
    pp. 1-2, 2022. DOI: 10.1109/IRMMW-THz50927.2022.9895490
    Keywords: ... Terahertz wave imaging;Image resolution;Prototypes;CMOS technology;Silicon;Antenna arrays;Signal to noise ratio;Diffraction-limited resolution;Silicon integrated array;direct-detection;antenna-coupled detector;QO imaging system;submillimeter-wave imaging;broadband antenna;THz imaging.

  19. Employing M1 direct calibration/de-embedding approaches for large signal model validation at mm-wave frequencies
    De Martino, C.; Esposito, C.; Schroter, M.; Spirito, M.;
    In 2022 47th International Conference on Infrared, Millimeter and Terahertz Waves (IRMMW-THz),
    pp. 1-2, 2022. DOI: 10.1109/IRMMW-THz50927.2022.9895785
    Keywords: ... Semiconductor device modeling;Measurement;CMOS technology;Foundries;Calibration.

  20. W-Band Demonstration of Dynamic, High-Gain Beam Steering with a Scanning Lens Phased Array
    Bosma, Sjoerd; Rooijen, Nick van; Alonso-delPino, Maria; Spirito, Marco; Llombart, Nuria;
    In 2022 47th International Conference on Infrared, Millimeter and Terahertz Waves (IRMMW-THz),
    pp. 1-2, 2022. DOI: 10.1109/IRMMW-THz50927.2022.9895677
    Keywords: ... Phased arrays;Antenna measurements;Beam steering;Phase measurement;Prototypes;Gain measurement;Antenna feeds.

  21. Core-Shell Leaky-Wave Lens Antenna for 150GHz Fly’s Eye Communication Systems
    Rooijen, Nick van; delPino, Maria Alonso; Spirito, Marco; Llombart, Nuria;
    In 2022 47th International Conference on Infrared, Millimeter and Terahertz Waves (IRMMW-THz),
    pp. 1-2, 2022. DOI: 10.1109/IRMMW-THz50927.2022.9895815
    Keywords: ... Communication systems;Dielectric materials;Bandwidth;Aperture antennas;Dielectrics;Microstrip;Lenses.

  22. Wideband Modeling of CMOS Schottky Barrier Diode Detectors for THz Radiometry
    Berkel, Sven van; Malotaux, Eduard Satoshi; Martino, Carmine de; Spirito, Marco; Cavallo, Daniele; Neto, Andrea; Llombart, Nuria;
    IEEE Transactions on Terahertz Science and Technology,
    Volume 11, Issue 5, pp. 495-507, 2021. DOI: 10.1109/TTHZ.2021.3085137
    Keywords: ... Modeling;Ultra wideband technology;Submillimeter wave technology;Wideband;Radiometry;Schottky diodes;Noise-equivalent power (NEP);noise-equivalent temperature difference (NETD);passive imaging;radiometry;Schottky barrier diode (SBD);submillimeter wave;terahertz (THz);ultrawideband.

  23. H-Band Quartz-Silicon Leaky-Wave Lens With Air-Bridge Interconnect to GaAs Front-End
    Arias Campo, Marta; Holc, Katarzyna; Weber, Rainer; De Martino, Carmine; Spirito, Marco; Leuther, Arnulf; Bruni, Simona; Llombart, Nuria;
    IEEE Transactions on Terahertz Science and Technology,
    Volume 11, Issue 3, pp. 297-309, 2021. DOI: 10.1109/TTHZ.2021.3049640
    Keywords: ... Lenses;Dipole antennas;Antennas;Wideband;Silicon;Antenna feeds;Gallium arsenide;Air-bridge chip interconnect;antenna-in-package;H-band;leaky-wave antenna;lens antenna;mm-wave;off-chip antenna.

  24. A 30GHz 4-way Series Doherty Digital Polar Transmitter Achieving 18% Drain Efficiency and -27.6dB EVM while Transmitting 300MHz 64-QAM OFDM Signal
    Mortazavi, Mohsen; Shen, Yiyu; Mul, Dieuwert. P. N.; de Vreede, Leo C. N.; Spirito, Marco; Babaie, Masoud;
    In 2021 IEEE Custom Integrated Circuits Conference (CICC),
    pp. 1-2, 2021. DOI: 10.1109/CICC51472.2021.9431396
    Keywords: ... Application specific integrated circuits;Transmitters;Power combiners;Communication systems;Scalability;Conferences;Modulation.

  25. Pre-Silicon direct Calibration/De-embedding Evaluation and Device Parameters Uncertainty Estimation
    Esposito, C.; De Martino, C.; Lehmann, S.; Zhao, Zhixing; Schroter, M.; Spirito, M.;
    In 2021 97th ARFTG Microwave Measurement Conference (ARFTG),
    pp. 1-4, 2021. DOI: 10.1109/ARFTG52261.2021.9640156
    Keywords: ... Uncertain systems;Uncertainty;Transducers;Systematics;Measurement uncertainty;Mathematical models;Data models;[Calibration;De-embedding;mm-wave].

  26. The Antenna Dome Real-Time Distributed Antenna Pattern Characterization System
    Musters, F. A.; Coesoij, R.A.; Migliore, M.D.; Schettino, F.; Spirito, M.;
    In 2021 97th ARFTG Microwave Measurement Conference (ARFTG),
    pp. 1-5, 2021. DOI: 10.1109/ARFTG52261.2021.9640079
    Keywords: ... Antenna measurements;Interpolation;5G mobile communication;Microprocessors;Systems architecture;Computer architecture;Real-time systems.

  27. A Novel Calibration Method for Active Interferometer-Based VNAs
    Mubarak, F. A.; Romano, R.; Rietveld, G.; Spirito, M.;
    IEEE Microwave and Wireless Components Letters,
    Volume 30, Issue 8, pp. 829-832, 2020. DOI: 10.1109/LMWC.2020.3006701
    Keywords: ... Calibration;Interferometers;Measurement uncertainty;Impedance measurement;Impedance;Q measurement;Radio frequency;Calibration;extreme impedance measurement;impedance mismatch;measurement;microwave interferometry;nanoelectronics;nanostructures;noise;traceability;vector network analyzer (VNA).

  28. Hardware and Software Solutions for Active Frequency Scalable (Sub)mm-Wave Load–Pull
    De Martino, Carmine; Galatro, Luca; Romano, Raffaele; Parisi, Gaetano; Spirito, Marco;
    IEEE Transactions on Microwave Theory and Techniques,
    Volume 68, Issue 9, pp. 3769-3775, 2020. DOI: 10.1109/TMTT.2020.3005178
    Keywords: ... Frequency control;Hardware;Frequency modulation;Frequency synthesizers;Frequency measurement;Power measurement;Device modeling;large-signal characterization;load–pull;mixed-signal;mm-wave.

  29. Wideband Double Leaky Slot Lens Antennas in CMOS Technology at Submillimeter Wavelengths
    van Berkel, Sven; Malotaux, Eduard Satoshi; De Martino, Carmine; Spirito, Marco; Cavallo, Daniele; Neto, Andrea; Llombart, Nuria;
    IEEE Transactions on Terahertz Science and Technology,
    Volume 10, Issue 5, pp. 540-553, 2020. DOI: 10.1109/TTHZ.2020.3006750
    Keywords: ... Lenses;Silicon;Antenna measurements;Slot antennas;Metals;Bandwidth;CMOS antennas;direct detection;double slot;leaky lenses;leaky wave;millimeter waves;on-chip antennas;submillimeter waves;terahertz (THz);THz imaging;ultrawideband.

  30. Equivalent Circuit Modeling of a Single-Ended Patch Sensing Element in Integrated Technology
    Shivamurthy, Harshitha Thippur; Hu, Zhebin; Vlachogiannakis, Gerasimos; Spirito, Marco; Neto, Andrea;
    IEEE Transactions on Microwave Theory and Techniques,
    Volume 68, Issue 1, pp. 17-26, 2020. DOI: 10.1109/TMTT.2019.2956938
    Keywords: ... Sensors;Permittivity;Apertures;Biological system modeling;Computational modeling;Load modeling;Numerical models;Equivalent transmission line model;permittivity sensors.

  31. System NEP Verification of a Wideband THz Direct Detector in CMOS
    van Berkel, S.L.; Malotaux, E.S.; de Martino, C.; Spirito, M.; Cavallo, D.; Neto, A.; Llombart, N.;
    In 2020 45th International Conference on Infrared, Millimeter, and Terahertz Waves (IRMMW-THz),
    pp. 1-1, 2020. DOI: 10.1109/IRMMW-THz46771.2020.9370624
    Keywords: ... Antenna measurements;Semiconductor device modeling;Schottky diodes;Slot antennas;Schottky barriers;Detectors;Wideband.

  32. Towards Commercially Available Quartz Calibration Substrates
    Galatro, Luca; De Martino, Carmine; van ‘t Hof, Jos; Alomari, Mohammed; Sailer, Holger; Burghartz, Joachim; Spirito, Marco;
    In 2020 95th ARFTG Microwave Measurement Conference (ARFTG),
    pp. 1-5, 2020. DOI: 10.1109/ARFTG47271.2020.9241374
    Keywords: ... Semiconductor device modeling;Silicon compounds;Microwave measurement;Stability criteria;Network analyzers;Benchmark testing;Silicon;VNA;calibration;on-wafer;probe-level;RSOL;fused silica.

  33. Over-the-Air Characterization Of mm-Wave On-Chip Antennas and Tx Modules, Concept and Calibration
    De Martino, C.; Visweswaran, Akshay; Spirito, M.;
    In 2020 95th ARFTG Microwave Measurement Conference (ARFTG),
    pp. 1-4, 2020. DOI: 10.1109/ARFTG47271.2020.9241375
    Keywords: ... Antenna measurements;Microwave measurement;Microwave antennas;Phase measurement;Power measurement;Receivers;Calibration;Over-the-Air;Antenna Measurements;mm-wave;THZ measurements;Phase Calibration;power calibration;phase-coherent sources.

  34. Vector gain based EVM estimation at mm-wave frequencies
    Van ‘t Hof, J.; De Martino, C.; Malotaux, S.; Squillante, M.; Marchetti, M.; Galatro, L.; Spirito, M.;
    In 2020 95th ARFTG Microwave Measurement Conference (ARFTG),
    pp. 1-5, 2020. DOI: 10.1109/ARFTG47271.2020.9241384
    Keywords: ... Performance evaluation;Millimeter wave transistors;Power measurement;Millimeter wave measurements;Loading;Millimeter wave technology;Gain measurement;5G;EVM;linearity;mm-wave characterization;vector gain.

  35. An integrated 132-147GHz power source with +27dBm EIRP
    Visweswaran, Akshay; Haag, Alexander; de Martino, Carmine; Disch, Karina; Maiwald, Tim; Vignon, Bastien; Aufinger, Klaus; Spirito, Marco; Zwick, Thomas; Wambacq, Piet;
    In 2020 IEEE Radio Frequency Integrated Circuits Symposium (RFIC),
    pp. 219-222, 2020. DOI: 10.1109/RFIC49505.2020.9218353
    Keywords: ... Transistors;Substrates;Dielectric resonator antennas;Stability analysis;Power amplifiers;Layout.

  36. Automated Contacting of On-Wafer Devices for RF Testing
    Mubarak, F.; Martino, C. D.; Toskovic, R.; Rietveld, G.; Spirito, M.;
    In 2020 Conference on Precision Electromagnetic Measurements (CPEM),
    pp. 1-2, 2020. DOI: 10.1109/CPEM49742.2020.9191800
    Keywords: ... Probes;Frequency measurement;Substrates;Measurement uncertainty;Coplanar waveguides;Correlation;Software measurement;On-wafer probing;on-wafer contacting;microwave measurements;measurement techniques;measurement uncertainty;precision measurements;uncertainty.

  37. Noise Behavior and Implementation of Interferometer-Based Broadband VNA
    Mubarak, Faisal Ali; Romano, Rafaelle; Galatro, Luca; Mascolo, Vincenzo; Rietveld, Gert; Spirito, Marco;
    IEEE Transactions on Microwave Theory and Techniques,
    Volume 67, Issue 1, pp. 249-260, 2019. DOI: 10.1109/TMTT.2018.2874667
    Keywords: ... Noise measurement;Impedance measurement;Frequency measurement;Impedance;Broadband communication;Radio frequency;Sensitivity;Extreme impedance measurement;impedance mismatch;microwave interferometry;nanoelectronics;nanostructures;noise;vector network analyzer (VNA).

  38. Miniaturized Broadband Microwave Permittivity Sensing for Biomedical Applications
    Vlachogiannakis, Gerasimos; Hu, Zhebin; Shivamurthy, Harshitha Thippur; Neto, Andrea; Pertijs, Michiel A. P.; de Vreede, Leo C. N.; Spirito, Marco;
    IEEE Journal of Electromagnetics, RF and Microwaves in Medicine and Biology,
    Volume 3, Issue 1, pp. 48-55, 2019. DOI: 10.1109/JERM.2018.2882564
    Keywords: ... Sensors;Permittivity;Bridge circuits;Radio frequency;Permittivity measurement;Metals;Microwave circuits;Bridge circuits;biomedical sensors;complementary metal-oxide semiconductor (CMOS) sensors;complex permittivity measurement;microwave sensors.

  39. High Resolution Passive THz Imaging Array With Polarization Reusage in 22nm CMOS
    van Berkel, S. L.; Malotaux, E. S.; van den Bogert, B.; Spirito, M.; Cavallo, D.; Neto, A.; Llombart, N.;
    In 2019 44th International Conference on Infrared, Millimeter, and Terahertz Waves (IRMMW-THz),
    pp. 1-2, 2019. DOI: 10.1109/IRMMW-THz.2019.8874183
    Keywords: ... Imaging;Radiometry;Detectors;Antenna arrays;Image resolution;Broadband antennas.

  40. A TRL Error-box Split Procedure to Compensate for the Bias Dependency Effects in Device Test-Fixtures
    De Martino, C.; Malotaux, E.S.; Spirito, M.;
    In 2019 93rd ARFTG Microwave Measurement Conference (ARFTG),
    pp. 1-6, 2019. DOI: 10.1109/ARFTG.2019.8739197
    Keywords: ... Calibration;Electrostatic discharges;Perturbation methods;Fixtures;Capacitance;Mathematical model;Scattering parameters;mm-wave;ESD;on-wafer;Antenna effect;S-parameters;TRL calibration.

  41. The HΓ-VNA, an Interferometric Approach for the Accurate Measurement of Extreme Impedances
    Romano, Raffaele; Mubarak, Faisal; Spirito, Marco; Galatro, Luca;
    In 2019 93rd ARFTG Microwave Measurement Conference (ARFTG),
    pp. 1-6, 2019. DOI: 10.1109/ARFTG.2019.8739232
    Keywords: ... Calibration;Impedance;Impedance measurement;Sensitivity;Reflection coefficient;Standards;Mixers;vector network analyzer;extreme impedance;interferometer;IQ mixer;high gamma.

  42. A 3D Printed TE10 Rectangular to TE01 Circular Waveguide Transition for Polymer Waveguide Characterization
    Del Mastro, M.; Del Pino, M. Alonso; Spirito, M.;
    In 2019 92nd ARFTG Microwave Measurement Conference (ARFTG),
    pp. 1-3, 2019. DOI: 10.1109/ARFTG.2019.8637235
    Keywords: ... Plastics;Waveguide transitions;Three-dimensional displays;Rectangular waveguides;Calibration;Optical waveguides;Copper;rectangular to circular transition;mode transducer;polymer waveguide;mm-wave.

  43. A 40-nm CMOS Complex Permittivity Sensing Pixel for Material Characterization at Microwave Frequencies
    Vlachogiannakis, Gerasimos; Pertijs, Michiel A. P.; Spirito, Marco; de Vreede, Leo C. N.;
    IEEE Transactions on Microwave Theory and Techniques,
    Volume 66, Issue 3, pp. 1619-1634, 2018. DOI: 10.1109/TMTT.2017.2753228
    Keywords: ... Permittivity;Permittivity measurement;Biomedical measurement;Microwave theory and techniques;Microwave measurement;Sensor phenomena and characterization;Biomedical sensors;bridge circuits;complex permittivity measurement;integrated microwave circuits;micro-wave sensors.

  44. A Compact Energy Efficient CMOS Permittivity Sensor Based on Multiharmonic Downconversion and Tunable Impedance Bridge
    Vlachogiannakis, G.; Hu, Z.; Shivamurthy, H. Thippur; Neto, A.; Pertijs, M.A.P; de Vreede, L. C. N.; Spirito, M.;
    In 2018 IEEE International Microwave Biomedical Conference (IMBioC),
    pp. 1-3, 2018. DOI: 10.1109/IMBIOC.2018.8428950
    Keywords: ... Permittivity measurement;Bridge circuits;Permittivity;Frequency measurement;Time measurement;Sensors;Battery charge measurement;Bridge circuits;chemical and biological sensors;sensitivity;near field;microwave sensors;permittivity;wearable sensors.

  45. A 5×5 Microwave Permittivity Sensor Matrix in O.14-m CMOS
    Hu, Zhebin; Vlachogiannakis, Gerasimos; Pertijs, Michiel A.P.; de Vreede, Leo; Spirito, Marco;
    In 2018 IEEE/MTT-S International Microwave Symposium - IMS,
    pp. 1160-1163, 2018. DOI: 10.1109/MWSYM.2018.8439438
    Keywords: ... Permittivity;Bridge circuits;Radio frequency;Permittivity measurement;Ethanol;Harmonic analysis;Semiconductor device measurement;Bridge circuits;Chemical and biological sensors;CMOS integrated circuits;Microwave sensors;Permittivity.

  46. Optical Performance of a Wideband 28nm CMOS Double Bow-Tie Slot Antenna for Imaging Applications
    van Berkel, S.L.; Malotaux, E.S.; Cavallo, D.; Spirito, M.; Neto, A.; LLombart, N.;
    In 2018 43rd International Conference on Infrared, Millimeter, and Terahertz Waves (IRMMW-THz),
    pp. 1-2, 2018. DOI: 10.1109/IRMMW-THz.2018.8510373
    Keywords: ... Radiometry;Antenna measurements;Lenses;Wideband;Slot antennas;Broadband antennas.

  47. Parameterization Models for Traceable Characterization of Planar CPW SOL Calibration Standards
    Mubarak, F.; Mascolo, V.; Rietveld, G.; Spirito, M.; Daffe, K.; Haddadi, K.;
    In 2018 Conference on Precision Electromagnetic Measurements (CPEM 2018),
    pp. 1-2, 2018. DOI: 10.1109/CPEM.2018.8500810
    Keywords: ... Uncertainty;Calibration;Coplanar waveguides;Standards;Frequency measurement;Measurement uncertainty;Probes;nanostructures;co-planar waveguide;on-wafer calibration;EM simulation;VNA;measurement uncertainty;precision measurements;traceability.

  48. Complex Permittivity Extraction of Layered Biological Samples
    Shivamurthy, Harshitha Thippur; Mascolo, Vincenzo; Romano, Raffaele; Neto, Andrea; Spirito, Marco;
    In 2018 IEEE/MTT-S International Microwave Symposium - IMS,
    pp. 1573-1576, 2018. DOI: 10.1109/MWSYM.2018.8439281
    Keywords: ... Permittivity;Probes;Permittivity measurement;Dielectrics;Skin;Tools;Complex permittivity;coaxial probe;microwave;RFM;food quality.

  49. Direct mm-Wave On-Wafer Power Calibration Employing CMOS as a Transfer Device
    De Martino, C.; Malotaux, E. S.; Galatro, L.; Spirito, M.;
    In 2018 91st ARFTG Microwave Measurement Conference (ARFTG),
    pp. 1-4, 2018. DOI: 10.1109/ARFTG.2018.8423821
    Keywords: ... Microwave measurement;Meters;MOSFET;Power measurement;Power control;Measurement uncertainty;Time measurement;mm-wave;power calibration;power control;on-wafer;S-parameters;large signal characterization;square-law detector.

  50. On the Impact of Radiation Losses in TRL Calibrations
    Spirito, M.; De Martino, C.; Galatro, L.;
    In 2018 91st ARFTG Microwave Measurement Conference (ARFTG),
    pp. 1-3, 2018. DOI: 10.1109/ARFTG.2018.8423820
    Keywords: ... Substrates;Calibration;Coplanar waveguides;Metals;Boundary conditions;Permittivity;Dielectrics;Surface waves;multimode propagation;dispersion;on-wafer calibration;(sub)mm-wave.

  51. A Planar Near-Field Setup for Millimeter-Wave System-Embedded Antenna Testing
    Alonso-delPino, Maria; Rosa, Marco di; Simeoni, Massimiliano; Spella, Maristella; De Martino, Carmine; Spirito, Marco;
    IEEE Antennas and Wireless Propagation Letters,
    Volume 16, pp. 83-86, 2017. DOI: 10.1109/LAWP.2016.2557239
    Keywords: ... Antenna measurements;Probes;Semiconductor device measurement;Antenna radiation patterns;Phase measurement;Frequency measurement;Embedded antenna;near-field measurement;on-module antenna.

  52. Millimeter-Wave On-Wafer TRL Calibration Employing 3-D EM Simulation-Based Characteristic Impedance Extraction
    Galatro, Luca; Spirito, Marco;
    IEEE Transactions on Microwave Theory and Techniques,
    Volume 65, Issue 4, pp. 1315-1323, 2017. DOI: 10.1109/TMTT.2016.2609413
    Keywords: ... Calibration;Impedance;Transmission line measurements;Capacitance;Substrates;Impedance measurement;Coplanar waveguides;Calibration;characteristic impedance;measurement;millimeter wave;silicon;TRL;vector network analyzer.

  53. Performance of THz Components Based on Microstrip PECVD SiNx Technology
    Finkel, Matvey; Thierschmann, Holger; Galatro, Luca; Katan, Allard J.; Thoen, David J.; de Visser, Pieter J.; Spirito, Marco; Klapwijk, Teun M.;
    IEEE Transactions on Terahertz Science and Technology,
    Volume 7, Issue 6, pp. 765-771, 2017. DOI: 10.1109/TTHZ.2017.2759507
    Keywords: ... Transmission line measurements;Power transmission lines;Dielectrics;Couplers;Submillimeter wave circuits;Coplanar waveguides;Micromechanical devices;Coupling circuits;micromechanical devices;submillimeter wave circuits;thin film circuits.

  54. A Total-Power Radiometer Front End in a 0.25- $\mu \textm$ BiCMOS Technology With Low $1/f$ -Corner
    Malotaux, Satoshi; Babaie, Masoud; Spirito, Marco;
    IEEE Journal of Solid-State Circuits,
    Volume 52, Issue 9, pp. 2256-2266, 2017. DOI: 10.1109/JSSC.2017.2705659
    Keywords: ... Radiometry;Detectors;Radio frequency;Bandwidth;Signal to noise ratio;Antennas;BiCMOS integrated circuits;Direct detection;flicker noise;low-noise amplifier (LNA);millimeter-wave (mm-wave);radiometer;square-law detector.

  55. Capacitively Loaded Inverted CPWs for Distributed TRL-Based De-Embedding at (Sub) mm-Waves
    Galatro, Luca; Pawlak, Andreas; Schroter, Michael; Spirito, Marco;
    IEEE Transactions on Microwave Theory and Techniques,
    Volume 65, Issue 12, pp. 4914-4924, 2017. DOI: 10.1109/TMTT.2017.2727498
    Keywords: ... Calibration;Coplanar waveguides;Substrates;Dielectrics;Impedance;Power transmission lines;Transmission line measurements;CPW;distributed de-embedding;millimeter waves;silicon;slow wave;thru-reflect line (TRL);VNA.

  56. Wideband single pixel radiometer in CMOS
    van Berkel, S.L.; Malotaux, E.S.; Cavallo, D.; Spirito, M.; Neto, A.; Llombart, N.;
    In 2017 42nd International Conference on Infrared, Millimeter, and Terahertz Waves (IRMMW-THz),
    pp. 1-2, 2017. DOI: 10.1109/IRMMW-THz.2017.8067166
    Keywords: ... Detectors;Imaging;Antennas;Radiometry;Lenses;Silicon;Schottky diodes.

  57. Integrated waveguide power combiners with artificial dielectrics for mm-wave systems
    Hu, Zhebin; Alonso-delPino, Maria; Cavallo, Daniele; Shivamurthy, Harshitha Thippur; Spirito, Marco;
    In 2017 IEEE MTT-S International Microwave Symposium (IMS),
    pp. 646-649, 2017. DOI: 10.1109/MWSYM.2017.8058652
    Keywords: ... Pins;Power combiners;Impedance;BiCMOS integrated circuits;Prototypes;Probes;Integrated circuit;BiCMOS;waveguide;artificial dielectric;power combiner;(sub)millimeter-wave.

  58. A near-field setup with independent amplitude and phase control of the stimuli for phased antenna testing
    De Martino, Carmine; Spirito, Marco; Lager, Ioan E.; Simeoni, Massimiliano;
    In 2017 11th European Conference on Antennas and Propagation (EUCAP),
    pp. 2851-2855, 2017. DOI: 10.23919/EuCAP.2017.7928515
    Keywords: ... Antenna arrays;Antenna measurements;Antenna radiation patterns;Testing;Calibration;Europe.

  59. IC calibration kits and de-embedding techniques for sub-mm-wave device characterization
    Spirito, M.; Galatro, L.;
    In 2017 IEEE Compound Semiconductor Integrated Circuit Symposium (CSICS),
    pp. 1-4, 2017. DOI: 10.1109/CSICS.2017.8240449
    Keywords: ... Calibration;Transmission line measurements;Metals;Frequency measurement;Impedance;Power transmission lines;Scattering parameters;TRL;CL-ICPW;vector network analizers;distributed de-embedding.

  60. Design and linearity analysis of a D-band power amplifier in 0.13 μm SiGe BiCMOS technology
    Hu, Z.; Sarris, G.; De Martino, C.; Spirito, M.; McCune, E.;
    In 2017 IEEE Compound Semiconductor Integrated Circuit Symposium (CSICS),
    pp. 1-4, 2017. DOI: 10.1109/CSICS.2017.8240469
    Keywords: ... Silicon germanium;BiCMOS integrated circuits;Power amplifiers;Heterojunction bipolar transistors;Radiofrequency integrated circuits;CMOS technology;Millimeter wave integrated circuits;D-band;HBT;millimeter-wave integrated circuits;power amplifier (PA);silicon-germanium (SiGe).

  61. Dielectric measurements of mangoes from 0.5GHz to 20GHz using a custom open-ended coaxial probe
    Shivamurthy, Harshitha Thippur; Matacena, Ilaria; Spirito, Marco;
    In 2017 47th European Microwave Conference (EuMC),
    pp. 958-961, 2017. DOI: 10.23919/EuMC.2017.8231005
    Keywords: ... Probes;Permittivity;Permittivity measurement;Dielectrics;Calibration;Apertures;Complex permittivity;coaxial probe;microwave;RFM.

  62. Near- and Far-Field Characterization of Planar mm-Wave Antenna Arrays with Waveguide-to-Microstrip Transition
    Salhi, Mohammed Adnan; Kazemipour, Alireza; Gentille, Gennaro; Spirito, Marco; Kleine-Ostmann, Thomas; Schrader, Thorsten;
    Journal of Infrared, Millimeter, and Terahertz Waves,
    Volume 37, Issue 9, pp. 857--873, 2016.
    document

  63. Contactless Measurement of Absolute Voltage Waveforms by a Passive Electric-Field Probe
    Hou, Rui; Spirito, Marco; Van Rijs, Fred; de Vreede, Leo C. N.;
    IEEE Microwave and Wireless Components Letters,
    Volume 26, Issue 12, pp. 1008-1010, 2016. DOI: 10.1109/LMWC.2016.2623250
    Keywords: ... Circuit testing;Nonlinear network analysis;Calibration;Capacitance;Voltage measurement;Microstrip;Microwave measurement;Calibration;electric-field probe;microwave circuit testing;nonlinear vector network analyzer (NVNA).

  64. Nonintrusive Near-Field Characterization of Spatially Distributed Effects in Large-Periphery High-Power GaN HEMTs
    Hou, Rui; Lorenzini, Martino; Spirito, Marco; Roedle, Thomas; van Rijs, Fred; de Vreede, Leo C. N.;
    IEEE Transactions on Microwave Theory and Techniques,
    Volume 64, Issue 11, pp. 4048-4062, 2016. DOI: 10.1109/TMTT.2016.2613525
    Keywords: ... Gallium nitride;HEMTs;MODFETs;Load modeling;Power measurement;Logic gates;Device characterization;gallium nitride (GaN);high electron-mobility transistor (HEMT);near-field measurement.

  65. Branchline and directional THz coupler based on PECVD SiNx-technology
    Finkel, M.; Thierschmann, H. R.; Galatro, L.; Katan, A. J.; Thoen, D. J.; de Visser, P. J.; Spirito, M.; Klapwijk, T. M.;
    In 2016 41st International Conference on Infrared, Millimeter, and Terahertz waves (IRMMW-THz),
    pp. 1-2, 2016. DOI: 10.1109/IRMMW-THz.2016.7758586
    Keywords: ... Microstrip;Fixtures;Coplanar waveguides;Couplers;Standards;Probes;Dielectrics.

  66. Characterization of broadband low-NEP SiGe square-law detectors for mm-wave passive imaging
    Malotaux, E.S.; Spirito, M.;
    In 2016 IEEE MTT-S International Microwave Symposium (IMS),
    pp. 1-4, 2016. DOI: 10.1109/MWSYM.2016.7539967
    Keywords: ... Detectors;Resistors;Silicon germanium;BiCMOS integrated circuits;1f noise;Frequency modulation;Broadband communication;Square law detector;millimeter-wave;BiCMOS;SiGe;flicker noise;1/f-noise;poly-silicon resistor.

  67. On the definition of reference planes in probe-level calibrations
    Galatro, Luca; Mubarak, Faisal; Spirito, Marco;
    In 2016 87th ARFTG Microwave Measurement Conference (ARFTG),
    pp. 1-4, 2016. DOI: 10.1109/ARFTG.2016.7501968
    Keywords: ... Calibration;Probes;Standards;Data models;Substrates;Solid modeling;Measurement uncertainty;VNA;calibration;on-wafer;EM simulation;wafer probes;RSOL.

  68. BiCMOS integrated waveguide with artificial dielectric at submillimeter wave frequencies
    Pino, M. Alonso-del; Shivamurthy, H. Thippur; Cavallo, D.; Galatro, L.; Spirito, M.;
    In 2016 IEEE MTT-S International Microwave Symposium (IMS),
    pp. 1-4, 2016. DOI: 10.1109/MWSYM.2016.7540093
    Keywords: ... Permittivity;Dielectrics;BiCMOS integrated circuits;Pins;Metals;Microstrip;Prototypes;BiCMOS;integrated waveguide;artificial dielectric (AD);submillimeter-wave.

  69. A passive total power radiometer in 0.25 µm SiGe BiCMOS for millimeter-wave imaging
    Malotaux, E.S.; Spirito, M.;
    In 2016 IEEE Bipolar/BiCMOS Circuits and Technology Meeting (BCTM),
    pp. 118-121, 2016. DOI: 10.1109/BCTM.2016.7738949
    Keywords: ... BiCMOS integrated circuits;Silicon germanium;Capacitance;Detectors;Noise measurement;Presence network agents;Nickel;passive radiometry;millimeter-wave;low-noise amplifier;square-law detector;low flicker-noise;Millimeter IC.

  70. Power level control of mm-wave test benches for accurate small and large-signal DUT measurements
    De Martino, C.; Hu, Z.; Galatro, L.; Sarris, G.; Spirito, M.;
    In 2016 88th ARFTG Microwave Measurement Conference (ARFTG),
    pp. 1-4, 2016. DOI: 10.1109/ARFTG.2016.7839723
    Keywords: ... Power measurement;Frequency measurement;Scattering parameters;Calibration;Power control;Frequency control;Ports (Computers);Power control;Power calibration;S-parameters measurements;mm-wave;sub-mm-wave.

  71. Fused silica based RSOL calibration substrate for improved probelevel calibration accuracy
    Galatro, Luca; Spirito, Marco;
    In 2016 88th ARFTG Microwave Measurement Conference (ARFTG),
    pp. 1-4, 2016. DOI: 10.1109/ARFTG.2016.7839721
    Keywords: ... Calibration;Standards;Silicon compounds;Load modeling;Transmission line measurements;Probes;Frequency measurement;VNA;calibration;on-wafer;probe-level;RSOL;fused silica.

  72. A 40-nm CMOS permittivity sensor for chemical/biological material characterization at RF/microwave frequencies
    Vlachogiannakis, Gerasimos; Spirito, Marco; Pertijs, Michiel A. P.; de Vreede, Leo C.N.;
    In 2016 IEEE MTT-S International Microwave Symposium (IMS),
    pp. 1-4, 2016. DOI: 10.1109/MWSYM.2016.7540260
    Keywords: ... Bridge circuits;Permittivity;Frequency measurement;Permittivity measurement;Dielectrics;Semiconductor device measurement;CMOS integrated circuits;Bridge circuits;Chemical and biological sensors;CMOS integrated circuits;Microwave sensors;Permittivity.

  73. Design, Fabrication, and Measurements of a 0.3 THz On-Chip Double Slot Antenna Enhanced by Artificial Dielectrics
    Syed, Waqas H.; Fiorentino, Giuseppe; Cavallo, Daniele; Spirito, Marco; Sarro, Pasqualina M.; Neto, Andrea;
    IEEE Transactions on Terahertz Science and Technology,
    Volume 5, Issue 2, pp. 288-298, 2015. DOI: 10.1109/TTHZ.2015.2399276
    Keywords: ... Dielectrics;Antenna feeds;Silicon;Metals;Slot antennas;Slabs;Artificial dielectric;front-to-back ratio;integrated antennas;surface waves.

  74. Silicon-Based Technology for Integrated Waveguides and mm-Wave Systems
    Jovanović, Vladimir; Gentile, Gennaro; Dekker, Ronald; de Graaf, Pascal; de Vreede, Leo C. N.; Nanver, Lis K.; Spirito, Marco;
    IEEE Transactions on Electron Devices,
    Volume 62, Issue 10, pp. 3153-3159, 2015. DOI: 10.1109/TED.2015.2466441
    Keywords: ... Waveguide transitions;Silicon;Rectangular waveguides;Metals;Waveguide components;Capacitors;Resistors;Deep reactive-ion etching (DRIE);IC technology;millimeter-wave (mm-wave) system;substrate transfer;substrate-integrated waveguide (SIW);waveguide.;Deep reactive-ion etching (DRIE);IC technology;millimeter-wave (mm-wave) system;substrate transfer;substrate-integrated waveguide (SIW);waveguide.

  75. A wideband 60 GHz class-E/F2 power amplifier in 40nm CMOS
    Babaie, Masoud; Staszewski, Robert Bogdan; Galatro, Luca; Spirito, Marco;
    In 2015 IEEE Radio Frequency Integrated Circuits Symposium (RFIC),
    pp. 215-218, 2015. DOI: 10.1109/RFIC.2015.7337743
    Keywords: ... Transistors;CMOS integrated circuits;Switching circuits;Oscillators;Frequency modulation;Impedance matching;Switches;Power amplifier;mm-wave;class-E/F2;switched-mode;transformer;PA stability.

  76. Improved RSOL planar calibration via EM modelling and reduced spread resistive layers
    Spirito, M.; Galatro, L.; Lorito, G.; Zoumpoulidis, T.; Mubarak, F.;
    In 2015 86th ARFTG Microwave Measurement Conference,
    pp. 1-5, 2015. DOI: 10.1109/ARFTG.2015.7381473
    Keywords: ... Standards;Calibration;Load modeling;Computational modeling;Integrated circuit modeling;Data models;Probes;VNA;calibration;on-wafer;EM simulation;fused silica.

  77. An IQ-steering technique for amplitude and phase control of mm-wave signals
    Visweswaran, Akshay; de Martino, Carmine; Sirignano, Emilio; Spirito, Marco;
    In 2015 86th ARFTG Microwave Measurement Conference,
    pp. 1-4, 2015. DOI: 10.1109/ARFTG.2015.7381471
    Keywords: ... Calibration;Mixers;Phase modulation;Phase measurement;Hardware;Minimization;IQ modulation;phase coherent;calibration;mm-wave.

  78. A simplified calibration procedure for on-wafer power levelled S-parameter measurements at mm-wave
    Galbano, S.; Galatro, L.; Spirito, M.;
    In 2015 85th Microwave Measurement Conference (ARFTG),
    pp. 1-3, 2015. DOI: 10.1109/ARFTG.2015.7162908
    Keywords: ... Calibration;Probes;Scattering parameters;Frequency measurement;Power measurement;Frequency control;Radio frequency.

  79. Evaluation and modeling of measurement resolution of a vector network analyzer for extreme impedance measurements
    Mubarak, Faisal; Romano, Raffaele; Spirito, Marco;
    In 2015 86th ARFTG Microwave Measurement Conference,
    pp. 1-3, 2015. DOI: 10.1109/ARFTG.2015.7381475
    Keywords: ... Impedance measurement;Impedance;Calibration;Electrical resistance measurement;Instruments;Couplers;Reflection;Extreme impedance;S-parameter;VNA;interferometric principle;active compensation;SMM.

  80. BiCMOS integrated waveguide power combiner at submillimeter-wave frequencies
    Alonso-delPino, M.; Cavallo, D.; Thippur-Shivamurthy, H.; Gao, H.; Spirito, M.;
    In 2015 40th International Conference on Infrared, Millimeter, and Terahertz waves (IRMMW-THz),
    pp. 1-2, 2015. DOI: 10.1109/IRMMW-THz.2015.7327937
    Keywords: ... Metals;Power combiners;BiCMOS integrated circuits;Permittivity;Dielectrics;Silicon germanium;Pins.

  81. Calibration and characterization techniques for on-wafer device characterization
    Galatro, L.; Spirito, M.;
    In 2015 IEEE 13th International New Circuits and Systems Conference (NEWCAS),
    pp. 1-4, 2015. DOI: 10.1109/NEWCAS.2015.7181978
    Keywords: ... Calibration;Coplanar waveguides;Substrates;Silicon compounds;Frequency measurement;Three-dimensional displays;Power measurement;Surface waves;multimode propagation;dispersion;on-wafer calibration;(sub)mm-wave.

  82. Medium-range propagation flexible waveguides at millimeter-wave and submillimeter-wave frequencies
    Alonso-delPino, M.; Llombart, N.; Spirito, M.;
    In 2015 40th International Conference on Infrared, Millimeter, and Terahertz waves (IRMMW-THz),
    pp. 1-2, 2015. DOI: 10.1109/IRMMW-THz.2015.7327864
    Keywords: ... Dielectric losses;Optical fibers;Propagation losses;Periodic structures.

  83. Power control for S-parameters and large signal characterization at (sub)-mmWave frequencies
    Galatro, L.; Galbano, S.; Santaniello, A.; Spirito, M.;
    In 2015 85th Microwave Measurement Conference (ARFTG),
    pp. 1-4, 2015. DOI: 10.1109/ARFTG.2015.7162903
    Keywords: ... Frequency measurement;Power measurement;Thermal stability;Calibration;Power control;Frequency control;Standards;mm-wave characterization;vector network analyzer (VNA);S-parameters;large signal characterization.

  84. An I/Q-mixer-steering interferometric technique for high-sensitivity measurement of extreme impedances
    Vlachogiannakis, Gerasimos; Shivamurthy, Harshitha Thippur; Del Pino, Maria Alonso; Spirito, Marco;
    In 2015 IEEE MTT-S International Microwave Symposium,
    pp. 1-4, 2015. DOI: 10.1109/MWSYM.2015.7166830
    Keywords: ... Dielectric measurement;Impedance measurement;Microwave measurement;Interferometry;Microwave imaging;Microwave theory and techniques;interferometry;impedance measurement;dielectric measurement;microwave imaging.

  85. Analysis of residual errors due to calibration transfer in on-wafer measurements at mm-wave frequencies
    Galatro, L.; Spirito, M.;
    In 2015 IEEE Bipolar/BiCMOS Circuits and Technology Meeting - BCTM,
    pp. 141-144, 2015. DOI: 10.1109/BCTM.2015.7340569
    Keywords: ... Calibration;Probes;Substrates;Silicon compounds;Silicon germanium;Measurement uncertainty;Transmission line matrix methods;vector network analyzer (VNA);calibration;probe coupling;millimeter wave;thru-reflect-line (TRL).

  86. Non-intrusive near-field characterization of distributed effects in large-periphery LDMOS RF power transistors
    Hou, Rui; Spirito, Marco; Heeres, Rob; van Rijs, Fred; de Vreede, Leo C.N.;
    In 2015 IEEE MTT-S International Microwave Symposium,
    pp. 1-3, 2015. DOI: 10.1109/MWSYM.2015.7166945
    Keywords: ... Radio frequency;Indexes;Modems;Performance evaluation;Distributed effects;LDMOS;near-field measurement;power amplifiers.

  87. Front-to-back ratio enhancement of on-chip antenna using artificial dielectrics at 300 GHz
    Syed, W. H.; Fiorentino, G.; Cavallo, D.; Spirito, M.; Neto, A.; Sarro, P. M.;
    In 2014 USNC-URSI Radio Science Meeting (Joint with AP-S Symposium),
    pp. 140-140, 2014. DOI: 10.1109/USNC-URSI.2014.6955522
    Keywords: ... Antenna measurements;Dielectrics;Antenna radiation patterns;System-on-chip;Silicon;Prototypes.

  88. A method for de-embedding cable flexure errors in S-parameter measurements
    Mubarak, Faisal; Rietveld, Gert; Spirito, Marco;
    In 83rd ARFTG Microwave Measurement Conference,
    pp. 1-5, 2014. DOI: 10.1109/ARFTG.2014.6899529
    Keywords: ... Calibration;Measurement uncertainty;Standards;Scattering parameters;Impedance;Semiconductor device measurement;Impedance measurement;S-parameters;cable errors;VNA;PNA;cable flexure;impedance;de-embedding;measurement techniques;RF.

  89. Enhancement of front to back ratio of on chip antenna by artificial dielectrics at 300 GHz
    Syed, W. H.; Fiorentino, G.; Cavallo, D.; Spirito, M.; Neto, A.; Sarro, P. M.;
    In 2014 39th International Conference on Infrared, Millimeter, and Terahertz waves (IRMMW-THz),
    pp. 1-2, 2014. DOI: 10.1109/IRMMW-THz.2014.6956185
    Keywords: ... Dielectrics;Antenna measurements;Slot antennas;Transmission line measurements;System-on-chip;Substrates.

  90. A package-integratable six-port reflectometer for power devices
    Venter, Razvan G.; Rui Hou; Buisman, Koen; Spirito, Marco; Werner, Klaus; de Vreede, Leo C.N.;
    In 2014 IEEE MTT-S International Microwave Symposium (IMS2014),
    pp. 1-4, 2014. DOI: 10.1109/MWSYM.2014.6848549
    Keywords: ... Pollution measurement;Monitoring;Load modeling;Frequency measurement;Microwave measurement;Abstracts;Layout;Bondwire;directional coupler;package integration;power amplifier;reflection coefficient measurement;six-port reflectometer.

  91. A 60-GHz Passive Broadband Multibeam Antenna System in Fused Silica Technology
    Foglia Manzillo, Francesco; Nastri, Raffaele; Spella, Maristella; Gentile, Gennaro; Spirito, Marco;
    IEEE Antennas and Wireless Propagation Letters,
    Volume 12, pp. 1376-1379, 2013. DOI: 10.1109/LAWP.2013.2286207
    Keywords: ... Broadband antennas;Butler matrices;Antenna measurements;Arrays;Microstrip;Loss measurement;Bandwidth;Butler matrix;millimeter-wave (mm-wave);multibeam antenna;passive beamforming;quartz technology.

  92. Silicon-Filled Rectangular Waveguides and Frequency Scanning Antennas for mm-Wave Integrated Systems
    Gentile, Gennaro; Jovanović, Vladimir; Pelk, Marco J.; Jiang, Lai; Dekker, Ronald; de Graaf, P.; Rejaei, Behzad; de Vreede, Leo C. N.; Nanver, Lis K.; Spirito, Marco;
    IEEE Transactions on Antennas and Propagation,
    Volume 61, Issue 12, pp. 5893-5901, 2013. DOI: 10.1109/TAP.2013.2281518
    Keywords: ... Arrays;Waveguide transitions;Frequency measurement;Coplanar waveguides;Transmission line measurements;Rectangular waveguides;Metals;Flip-chip;frequency scanning array;integration;mm-wave interconnect;mm-wave system;radar;substrate integrated waveguide (SIW);W-band;waveguide.

  93. Multimode analysis of transmission lines and substrates for (sub)mm-wave calibration
    Spirito, M.; Gentile, G.; Akhnoukh, A.;
    In 82nd ARFTG Microwave Measurement Conference,
    pp. 1-6, 2013. DOI: 10.1109/ARFTG-2.2013.6737356
    Keywords: ... Coplanar waveguides;Substrates;Calibration;Silicon compounds;Metals;Three-dimensional displays;Solid modeling;Surface waves;multimode propagation;dispersion;on-wafer calibration;(sub)mm-wave.

  94. Ultra-wide band CPW to substrate integrated waveguide (SIW) transition based on a U-shaped slot antenna
    Gentile, G.; Rejaei, B.; Jovanović, V.; Nanver, L.K.; de Vreede, L.C.N.; Spirito, M.;
    In 2013 European Microwave Integrated Circuit Conference,
    pp. 25-28, 2013.
    Keywords: ... Coplanar waveguides;Waveguide transitions;Electromagnetic waveguides;Slot antennas;Resonant frequency;Substrates;Impedance;Coplanar Waveguide (CPW);Substrate integrated waveguide (SIW);transition;U-shaped slot;ultra-wide band.

  95. A CMOS-compatible metamaterial to enhance the front to back radiation ratio in terahertz antenna for sensing application
    Fiorentino, G.; Syed, W.; Santagata, F.; Spirito, M.; Pandraud, G.; Neto, A.; Sarro, P. M.; Adam, A. J. L.;
    In SENSORS, 2013 IEEE,
    pp. 1-4, 2013. DOI: 10.1109/ICSENS.2013.6688503
    Keywords: ... Silicon;Stress;Metals;Slot antennas;Metamaterials;Dielectrics.

  96. Characterizing cable flexure effects in S-parameter measurements
    Mubarak, Faisal; Rietveld, Gert; Hoogenboom, Dennis; Spirito, Marco;
    In 82nd ARFTG Microwave Measurement Conference,
    pp. 1-7, 2013. DOI: 10.1109/ARFTG-2.2013.6737336
    Keywords: ... Coaxial cables;Measurement uncertainty;Noise;Calibration;Vectors;Scattering parameters;Monte Carlo methods;VNA;PNA;S-parameters;cable effects;cable flexure;impedance;de-embedding;measurement;measurement techniques.

  97. An FM demodulator operating across 2–10GHz IF
    Visweswaran, Akshay; Long, John R.; Galatro, Luca; Spirito, Marco; Staszewski, Robert B.;
    In 2013 IEEE Radio Frequency Integrated Circuits Symposium (RFIC),
    pp. 213-216, 2013. DOI: 10.1109/RFIC.2013.6569564
    Keywords: ... Demodulation;Wideband;Frequency shift keying;Mixers;CMOS integrated circuits;Receivers;FM demodulator;injection locking;auto-correlation;FM deviation;low-power;wideband.

  98. Large signal characterization of millimeter wave devices using mixed signal active load-pull
    Galatro, L.; Akhnoukh, A.; Magnée, P.; Marchetti, M.; Spirito, M.;
    In 82nd ARFTG Microwave Measurement Conference,
    pp. 1-5, 2013. DOI: 10.1109/ARFTG-2.2013.6737343
    Keywords: ... Semiconductor device measurement;Frequency measurement;Power measurement;Performance evaluation;Gain measurement;Standards;Load modeling;active load-pull;mixed-signal;mm-wave characterization;large-signal;open-loop.

  99. Non-intrusive characterization of active device interactions in high-efficiency power amplifiers
    Hou, Rui; Spirito, Marco; Gajadharsing, John; de Vreede, Leo C.N.;
    In 2013 IEEE MTT-S International Microwave Symposium Digest (MTT),
    pp. 1-3, 2013. DOI: 10.1109/MWSYM.2013.6697599
    Keywords: ... Current measurement;Probes;Ports (Computers);Power amplifiers;Semiconductor device measurement;Power generation;Voltage measurement;Active load modulation;near-field measurement;RF power amplifiers.

  100. Device characterization for LTE applications with wideband baseband, fundamental and harmonic impedance control
    Manjanna, A. Kumar; Marchetti, M.; Buisman, K.; Spirito, M.; Pelk, M. J.; de Vreede, L. C. N.;
    In 2013 European Microwave Conference,
    pp. 255-258, 2013. DOI: 10.23919/EuMC.2013.6686639
    Keywords: ... Baseband;Impedance;Harmonic analysis;Linearity;Wideband;Impedance measurement.

  101. Synthesized pulsed bias for device characterization
    Kumar Manjanna, A.; Buisman, K.; Spirito, M.; Marchetti, M.; Pelk, M.; de Vreede, L. C. N.;
    In 81st ARFTG Microwave Measurement Conference,
    pp. 1-4, 2013. DOI: 10.1109/ARFTG.2013.6579031
    Keywords: ... Pulse measurements;Voltage measurement;Calibration;Microwave measurement;Semiconductor device measurement;Shape;Microwave theory and techniques;Isothermal;characterization;pulsed;pulse shaping;ideal pulses.

  102. Passive Circuit Technologies for mm-Wave Wireless Systems on Silicon
    J. R. Long; Y. Zhao; W. Wu; M. Spirito; L. Vera; E. Gordon;
    IEEE Transactions on Circuits and Systems I: Regular Papers,
    Volume 59, Issue 8, pp. 1680-1693, Aug 2012.

  103. An Experimental Power-Lines Model for Digital ASICs Based on Transmission Lines
    M. Costagliola; D. de Caro; A. Girardi; R. Izzi; N. Rinaldi; M. Spirito; P. Spirito;
    IEEE Transactions on Very Large Scale Integration (VLSI) Systems,
    Volume 20, Issue 1, pp. 162-166, Jan 2012.

  104. 60 GHz mixed signal active load-pull system for millimeter wave devices characterization
    L. Galatro; M. Marchetti; M. Spirito;
    In 80th ARFTG Microwave Measurement Conference,
    pp. 1-6, Nov 2012.

  105. Silicon integrated waveguide technology for mm-wave frequency scanning array
    Gentile, G.; Spirito, M.; de Vreede, L.C.N; Rejaei, B.; Dekker, R.; de Graaf, P.;
    In 2012 7th European Microwave Integrated Circuit Conference,
    pp. 234-237, 2012.

  106. Contactless measurement of in-circuit reflection coefficients
    Rui Hou; Spirito, Marco; Kooij, Bert-Jan; van Rijs, Fred; de Vreede, Leo C.N.;
    In 2012 IEEE/MTT-S International Microwave Symposium Digest,
    pp. 1-3, 2012. DOI: 10.1109/MWSYM.2012.6259588

  107. Silicon VLSI catches the millimeter wave
    J. R. Long; W. L. Chan; Y. Zhao; M. Spirito;
    IEEE Communications Magazine,
    Volume 49, Issue 10, pp. 182-189, Oct 2011.

  108. A 4dB NF 60GHz-band low-noise amplifier with balanced outputs
    Y. Jin; J. R. Long; M. Spirito;
    In 2011 IEEE Bipolar/BiCMOS Circuits and Technology Meeting,
    pp. 115-118, Oct 2011.

  109. A 7dB NF 60GHz-band millimeter-wave transconductance mixer
    Y. Jin; J. R. Long; M. Spirito;
    In 2011 IEEE Radio Frequency Integrated Circuits Symposium,
    pp. 1-4, June 2011.

  110. Compact mm-wave power combiners in 65nm CMOS-SOI
    Y. Zhao; J. R. Long; M. Spirito;
    In 2011 IEEE 11th Topical Meeting on Silicon Monolithic Integrated Circuits in RF Systems,
    pp. 33-36, Jan 2011.

  111. A 60GHz-band 20dBm power amplifier with 20% peak PAE
    Y. Zhao; J. R. Long; M. Spirito;
    In 2011 IEEE Radio Frequency Integrated Circuits Symposium,
    pp. 1-4, June 2011.

  112. Circuit technologies for mm-wave wireless systems on silicon
    J. R. Long; Y. Zhao; Y. Jin; W. Wu; M. Spirito;
    In 2011 IEEE Custom Integrated Circuits Conference (CICC),
    pp. 1-8, Sept 2011.

  113. A +18dBm, 79 #x2013;87.5GHz bandwidth power amplifier in 0.13 #x00B5;m SiGe-BiCMOS
    Y. Zhao; J. R. Long; M. Spirito; A. B. Akhnoukh;
    In 2011 IEEE Bipolar/BiCMOS Circuits and Technology Meeting,
    pp. 17-20, Oct 2011.

  114. An effective key management scheme for mobile heterogeneous sensor networks
    S. U. Khan; L. Lavagno; C. Pastrone; M. Spirito;
    In International Conference on Information Society (i-Society 2011),
    pp. 98-103, June 2011.

  115. An energy and memory-efficient key management scheme for mobile heterogeneous sensor networks
    S. U. Khan; C. Pastrone; L. Lavagno; M. A. Spirito;
    In 2011 6th International Conference on Risks and Security of Internet and Systems (CRiSIS),
    pp. 1-8, Sept 2011.

  116. Millimeter-wave integrated waveguides on silicon
    Gentile, G.; Dekker, R.; de Graaf, P.; Spirito, M.; de Vreede, L. C. N.; Rejaei, B.;
    In 2011 IEEE 11th Topical Meeting on Silicon Monolithic Integrated Circuits in RF Systems,
    pp. 37-40, 2011. DOI: 10.1109/SIRF.2011.5719314

  117. Silicon Filled Integrated Waveguides
    Gentile, G.; Dekker, Ronald; de Graaf, Pascal; Spirito, M.; Pelk, M. J.; de Vreede, L. C. N.; Rejaei Salmassi, B.;
    IEEE Microwave and Wireless Components Letters,
    Volume 20, Issue 10, pp. 536-538, 2010. DOI: 10.1109/LMWC.2010.2063420

  118. A 60GHz-band 2 #x00D7;2 phased-array transmitter in 65nm CMOS
    W. L. Chan; J. R. Long; M. Spirito; J. J. Pekarik;
    In 2010 IEEE International Solid-State Circuits Conference - (ISSCC),
    pp. 42-43, Feb 2010.

  119. Compact transformer power combiners for millimeter-wave wireless applications
    Y. Zhao; J. R. Long; M. Spirito;
    In 2010 IEEE Radio Frequency Integrated Circuits Symposium,
    pp. 223-226, May 2010.

  120. A 60GHz-band Millimeter-wave active balun with #x00B1;5 #x00B0; phase error
    Y. Jin; M. Spirito; J. R. Long;
    In The 5th European Microwave Integrated Circuits Conference,
    pp. 210-213, Sept 2010.

  121. Antenna interface for mm-wave communication
    S. Malevsky; M. Spirito; J. R. Long;
    In 2010 Loughborough Antennas Propagation Conference,
    pp. 565-568, Nov 2010.

  122. A multi-step phase calibration procedure for closely spaced multi-tone signals
    Mirra, M.; Marchetti, M.; Tessitore, F.; Spirito, M.; de Vreede, L.C.N.; Betts, L.;
    In 75th ARFTG Microwave Measurement Conference,
    pp. 1-5, 2010. DOI: 10.1109/ARFTG.2010.5496320

  123. A mixed-signal load-pull system for base-station applications
    Marchetti, Mauro; Heeres, Rob; Squillante, Michele; Pelk, Marco; Spirito, Marco; de Vreede, Leo C. N.;
    In 2010 IEEE Radio Frequency Integrated Circuits Symposium,
    pp. 491-494, 2010. DOI: 10.1109/RFIC.2010.5477381

  124. Enhanced RF power amplifiers and device characterization setups using coherent mixed-signal techniques
    de Vreede, L.C.N.; Pelk, M.; Neo, E.; Qureshi, J.; Spirito, M.; Squillante, M.; Marchetti, M.;
    In 2010 IEEE 11th Annual Wireless and Microwave Technology Conference (WAMICON),
    pp. 1-5, 2010. DOI: 10.1109/WAMICON.2010.5461858

  125. Millimeter-wave passive components on silicon for wireless communication applications
    Y. Zhao; Y. Jin; M. Spirito; J. R. Long;
    In 2009 16th IEEE International Conference on Electronics, Circuits and Systems - (ICECS 2009),
    pp. 972-975, Dec 2009.

  126. Thermal simulation and ultrafast IR temperature mapping of a Smart Power Switch for automotive applications
    M. Riccio; A. Irace; G. Breglio; P. Spirito; V. Kosel; M. Glavanovics; A. Satka;
    In 2009 21st International Symposium on Power Semiconductor Devices IC's,
    pp. 200-203, June 2009.

  127. A 60GHz-band 1V 11.5dBm power amplifier with 11% PAE in 65nm CMOS
    W. L. Chan; J. R. Long; M. Spirito; J. J. Pekarik;
    In 2009 IEEE International Solid-State Circuits Conference - Digest of Technical Papers,
    pp. 380-381,381a, Feb 2009.

  128. Energy Detection Spectrum Sensing with Discontinuous Primary User Signal
    F. Penna; C. Pastrone; M. A. Spirito; R. Garello;
    In 2009 IEEE International Conference on Communications,
    pp. 1-5, June 2009.

  129. Probability of Missed Detection in Eigenvalue Ratio Spectrum Sensing
    F. Penna; R. Garello; M. A. Spirito;
    In 2009 IEEE International Conference on Wireless and Mobile Computing, Networking and Communications,
    pp. 117-122, Oct 2009.

  130. A mixed-signal approach for high-speed fully controlled multidimensional load-pull parameters sweep
    Squillante, Michele; Marchetti, Mauro; Spirito, Marco; de Vreede, Leo C. N.;
    In 2009 73rd ARFTG Microwave Measurement Conference,
    pp. 1-5, 2009. DOI: 10.1109/ARFTG.2009.5278074

  131. Active Harmonic Load–Pull With Realistic Wideband Communications Signals
    Marchetti, Mauro; Pelk, Marco J.; Buisman, Koen; Neo, W. C. Edmund; Spirito, Marco; de Vreede, Leo C. N.;
    IEEE Transactions on Microwave Theory and Techniques,
    Volume 56, Issue 12, pp. 2979-2988, 2008. DOI: 10.1109/TMTT.2008.2007330

  132. A Monolithic Low-Distortion Low-Loss Silicon-on-Glass Varactor-Tuned Filter With Optimized Biasing
    Buisman, Koen; de Vreede, Leo C. N.; Larson, Lawrence E.; Spirito, Marco; Akhnoukh, Atef; Lin, Yu; Liu, Xiao-dong; Nanver, Lis K.;
    IEEE Microwave and Wireless Components Letters,
    Volume 17, Issue 1, pp. 58-60, 2007. DOI: 10.1109/LMWC.2006.887262

  133. Active Harmonic Load–Pull for On-Wafer Out-of-Band Device Linearity Optimization
    Spirito, Marco; Pelk, Marco J.; van Rijs, Fred; Theeuwen, Steven J. C. H.; Hartskeerl, Dave; de Vreede, Leo C. N.;
    IEEE Transactions on Microwave Theory and Techniques,
    Volume 54, Issue 12, pp. 4225-4236, 2006. DOI: 10.1109/TMTT.2006.885568

  134. A pulsed network analyzer for high dynamic range isothermal measurements
    Marchetti, M.; Pelk, M.; Buisman, K.; Spirito, M.; de Vreede, L. C. N.;
    In 2006 68th ARFTG Conference: Microwave Measurement,
    pp. 1-4, 2006. DOI: 10.1109/ARFTG.2006.8361670

  135. Surface-passivated high-resistivity silicon as a true microwave substrate
    Spirito, M.; De Paola, F.M.; Nanver, L.K.; Valletta, E.; Bifeng Rong; Rejaei, B.; de Vreede, L.C.N.; Burghartz, J.N.;
    IEEE Transactions on Microwave Theory and Techniques,
    Volume 53, Issue 7, pp. 2340-2347, 2005. DOI: 10.1109/TMTT.2005.850435

  136. On the optimum 2nd harmonic source and load impedances for the efficiency-linearity trade-off of RF LDMOS power amplifiers
    D. M. H. Hartskeerl; I. Volokhine; M. Spirito;
    In 2005 IEEE Radio Frequency integrated Circuits (RFIC) Symposium - Digest of Papers,
    pp. 447-450, June 2005.

  137. “Distortion-Free” Varactor Diode Topologies for RF Adaptivity
    Buisman, K.; de Vreede, L. C. N.; Larson, L.E.; Spirito, M.; Akhnoukh, A.; Scholtes, T.L.M.; Nanver, L. K.;
    In IEEE MTT-S International Microwave Symposium Digest, 2005.,
    pp. 157-160, 2005. DOI: 10.1109/MWSYM.2005.1516547

  138. Improved hybrid SiGe HBT class-AB power amplifier efficiency using varactor-based tunable matching networks
    Neo, W.C.E.; Liu, X.; Lin, Y.; de Vreede, L.C.N.; Larson, L.E.; Spirito, S.; Akhnoukh, A.; de Graauw, A.; Nanver, L.K.;
    In Proceedings of the Bipolar/BiCMOS Circuits and Technology Meeting, 2005.,
    pp. 108-111, 2005. DOI: 10.1109/BIPOL.2005.1555211

  139. Experimental procedure to optimize out-of-band terminations for highly linear and power efficient bipolar class-AB RF amplifiers
    Spirito, M.; van der Heijden, M.P.; Pelk, M.; de Vreede, L.C.N.; Zampardi, P.J.; Larson, L.E.; Burghartz, J.N.;
    In Proceedings of the Bipolar/BiCMOS Circuits and Technology Meeting, 2005.,
    pp. 112-115, 2005. DOI: 10.1109/BIPOL.2005.1555212

  140. Low-distortion, low-loss varactor-based adaptive matching networks, implemented in a silicon-on-glass technology
    Buisman, K.; de Vreede, L.C.N.; Larson, L.E.; Spirito, M.; Akhnoukh, A.; Lin, Y.; Liu, X.; Nanver, L.K.;
    In 2005 IEEE Radio Frequency integrated Circuits (RFIC) Symposium - Digest of Papers,
    pp. 389-392, 2005. DOI: 10.1109/RFIC.2005.1489820

  141. Large signal verification of the circuit-oriented smoothie database model for LDMOS devices
    Cuoco, V.; Yanson, O.; Hammes, P.; Spirito, M.; de Vreede, L.C.N.; Steenwijk, A.v.; Versleijen, M.; Neo, W.C.E.; Jos, H.F.F.; Burghartz, J.N.;
    In 34th European Microwave Conference, 2004.,
    pp. 217-220, 2004.

  142. A technique to linearize LDMOS power amplifiers based on derivative superposition and out-of-band impedance optimization
    W.C.E. Neo; van der Heijden, M.P.; de Vreede, L.C.N.; Spirito, M.; Cuoco, V.; van Rijs, F.;
    In 34th European Microwave Conference, 2004.,
    pp. 1173-1175, 2004.

  143. Base-band impedance control and calibration for on-wafer linearity measurements
    Pelk, M.J.; de Vreede, L.C.N.; Spirito, M.; Jos, J.H.;
    In ARFTG 63rd Conference, Spring 2004,
    pp. 35-40, 2004. DOI: 10.1109/ARFTG.2004.1387852

  144. On the optimum biasing and input out-of-band terminations of linear and power efficient class-AB bipolar RF amplifiers
    van der Heijden, M.P.; Spirito, M.; Pelk, M.; de Vreede, L.C.N.; Burghartz, J.N.;
    In Bipolar/BiCMOS Circuits and Technology, 2004. Proceedings of the 2004 Meeting,
    pp. 44-47, 2004. DOI: 10.1109/BIPOL.2004.1365741

  145. The electro-thermal Smoothie database model for LDMOS devices
    Cuoco, V.; Neo, W.C.E.; Spirito, M.; Yanson, O.; Nenadovic, N.; de Vreede, L.C.N.; Jos, H.F.F.; Burghartz, J.N.;
    In Proceedings of the 30th European Solid-State Circuits Conference (IEEE Cat. No.04EX850),
    pp. 457-460, 2004. DOI: 10.1109/ESSDER.2004.1356590

  146. A novel active harmonic load-pull setup for on-wafer device linearity characterization
    Spirito, M.; de Vreede, L.C.N.; de Kok, M.; Pelk, M.; Hartskeerl, D.; Jos, H.F.F.; Mueller, J.E.; Burghartz, J.;
    In 2004 IEEE MTT-S International Microwave Symposium Digest (IEEE Cat. No.04CH37535),
    pp. 1217-1220 Vol.2, 2004. DOI: 10.1109/MWSYM.2004.1339207

  147. Power amplifier PAE and ruggedness optimization by second-harmonic control
    Spirito, M.; de Vreede, L.C.N.; Nanver, L.K.; Weber, S.; Burghartz, J.N.;
    IEEE Journal of Solid-State Circuits,
    Volume 38, Issue 9, pp. 1575-1583, 2003. DOI: 10.1109/JSSC.2003.815918

  148. A calibration procedure for on-wafer differential load-pull measurements
    Spirito, M.; van der Heijden, M.P.; de Kok, M.; de Vreede, L.C.N.;
    In 61st ARFTG Conference Digest, Spring 2003.,
    pp. 1-4, 2003. DOI: 10.1109/ARFTGS.2003.1216860

  149. A 2 GHz high-gain differential InGaP HBT driver amplifier matched for high IP3
    van der Heijden, M.P.; Spirito, M.; de Vreede, L.C.N.; van Straten, F.; Burghartz, J.N.;
    In IEEE MTT-S International Microwave Symposium Digest, 2003,
    pp. 235-238 vol.1, 2003. DOI: 10.1109/MWSYM.2003.1210923

  150. Low-loss passives for 2nd-harmonic termination control in power amplifiers for mobile applications
    Spirito, M.; de Vreede, L.C.N.; Nanver, L.K.; Mueller, J.E.; Burghartz, J.N.;
    In 2003 Topical Meeting on Silicon Monolithic Integrated Circuits in RF Systems, 2003. Digest of Papers.,
    pp. 49-52, 2003. DOI: 10.1109/SMIC.2003.1196666

  151. Power amplifier PAE and ruggedness optimization by second harmonic control
    Spirito, M.; de Vreede, L.C.N.; Nanver, L.K.; Weber, S.; Burghartz, J.N.;
    In Proceedings of the Bipolar/BiCMOS Circuits and Technology Meeting,
    pp. 173-176, 2002. DOI: 10.1109/BIPOL.2002.1042911

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