prof.dr. L.C.N. de Vreede

Professor, Chairman
Electronics Research Laboratory (ELCA), Department of Microelectronics

Expertise: RF, Microwave, Power Amplifiers, Device Characterization & modeling

Themes: Big-data on-chip transmission, Microwave circuits, RF electronics, Space electronics systems

Biography

Leo C. N. de Vreede was born in Delft, the Netherlands in 1965. He received the Ph.D. degree (cum laude) from Delft University of Technology in 1996. In 1988 he joined the Laboratory of Telecommunication and Remote Sensing Technology of the Department of Electrical Engineering, Delft University of Technology. In 1996, he was appointed as assistant professor at the Delft University of Technology working on the nonlinear distortion behavior of bipolar transistors at Delft Institute of Microelectronics and Submicron Technology (DIMES). In the winter season of 98-99 he was a guest of the high speed device group at the University of San Diego, California.

In 1999 and 2015 he was appointed as an associate professor respectively full professor at the Delft University of Technology and became responsible for the Microwave Components Group and the Electronics Research Laboratory. Since that time he worked on RF solutions for improved linearity and RF performance at the device, circuit and system level. He is co-founder/advisor of Anteverta-mw a company specialized in RF device characterization, co-founder of DiTIQ, a company focusing on fully digital energy-efficient wideband transmitters. He is (co)recipient of the IEEE Microwave prize in 2008, mentor of the Else Kooi prize awarded PhD work in 2010 and mentor of the Dow Energy dissertation prize awarded PhD work in 2011. Recipient of the TUD entrepreneurial scientist award 2015. He (co)guided several students that won (best) paper awards at the: BCTM, PRORISC, GAAS, ESSDERC, IMS, RFIT and RFIC. He (co)authored more than 110 IEEE refereed conference and journal papers and holds several patents. His current interest includes RF measurement systems, technology optimization and circuit/system concepts for wireless systems.

EE4605 Integrated Circuits and Systems for Wireless Applications

Design and analysis of typical RF IC building blocks in a wireless transceiver

ET4600 Wireless Concepts and systems

Basic concepts of RF design, such as noise, nonlinearity, Impedance Matching, Analog/Digital Modulation, Pulse-shaping, Mixer, Oscillator, Link-budget, Transmitter/Receiver Architectures

Energy Efficient Wideband Transmitter, NXP Partnership ‘Advanced 5G Solutions’

This project providing enhanced average efficiency in wideband wireless transmitters while withstanding the changing load conditions that can occur in handheld devices and MIMO/smart-antenna communication systems.

Smart Energy Efficient Digital Communication

SEEDCOM aims for fully integrated energy efficient wideband transmitters

smart Everything everywhere Access to content through Small cells Technologies

EAST is focused on the development of Small cell technologies for 5G applications up to 6 GHz

Integrated Near Field sensOrs for high Resolution MicrowavE spectRoscopy

The goal of this project is the creation of a new class of sensors, enabling fast and accurate dielectric characterization of biological samples, with high-sensitivity and high-spatial resolution.

Projects history

Merging electronics and Micro-nano PHotonics in integrated systeMs

Research program for developing an integration platform for high-frequency electronics with micro- and nano-photonics.

  1. A 40-nm CMOS Complex Permittivity Sensing Pixel for Material Characterization at Microwave Frequencies
    G. Vlachogiannakis; M. A. P. Pertijs; M. Spirito; L. C. N. de Vreede;
    IEEE Transactions on Microwave Theory and Techniques,
    Volume PP, Issue 99, pp. 1-16, 2017. DOI: 10.1109/TMTT.2017.2753228
    Keywords: ... Biomedical measurement;Microwave measurement;Microwave theory and techniques;Permittivity;Permittivity measurement;Sensor phenomena and characterization;Biomedical sensors;bridge circuits;complex permittivity measurement;integrated microwave circuits;micro-wave sensors..

  2. An intrinsically linear wideband digital polar PA featuring AM-AM and AM-PM corrections through nonlinear sizing, overdrive-voltage control, and multiphase RF clocking
    M. Hashemi; Y. Shen; M. Mehrpoo; M. Acar; R. van Leuken; M.S. Alavi; L.C.N de Vreede;
    In ISSCC,
    pp. 300-301, Feb 2017.

  3. Enhanced Bipolar Transistor Design for the Linearization of the Base-Collector Capacitance
    Jordi vd Meulen; Leo de Vreede;
    In 2017 IEEE Bipolar/BiCMOS Circuits and Technology Meeting (BCTM),
    2017.

  4. Contactless Measurement of Absolute Voltage Waveforms by a Passive Electric-Field Probe
    R. Hou; M. Spirito; F. Van Rijs; L. C. N. de Vreede;
    IEEE Microwave and Wireless Components Letters,
    Volume 26, Issue 12, pp. 1008-1010, Dec 2016.

  5. Nonintrusive Near-Field Characterization of Spatially Distributed Effects in Large-Periphery High-Power GaN HEMTs
    R. Hou; M. Lorenzini; M. Spirito; T. Roedle; F. van Rijs; L. C. N. de Vreede;
    IEEE Transactions on Microwave Theory and Techniques,
    Volume 64, Issue 11, pp. 4048-4062, Nov 2016.

  6. Out-of-Band Immunity to Interference of Single-Ended Baseband Amplifiers Through IM_2 Cancellation
    E. Totev; C. Huang; L. C. N. de Vreede; J. R. Long; W. A. Serdijn; C. Verhoeven;
    IEEE Transactions on Circuits and Systems I: Regular Papers,
    Volume 63, Issue 11, pp. 1785-1793, Nov 2016.

  7. A 40-nm CMOS permittivity sensor for chemical/biological material characterization at RF/microwave frequencies
    G. Vlachogiannakis; M. Spirito; M. A. P. Pertijs; L. C. N. de Vreede;
    In 2016 IEEE MTT-S International Microwave Symposium (IMS),
    pp. 1-4, May 2016.

  8. A 5.9 GHz RFDAC-based outphasing power amplifier in 40-nm CMOS with 49.2% efficiency and 22.2 dBm power
    Z. Hu; L. C. N. de Vreede; M. S. Alavi; D. A. Calvillo-Cortes; R. B. Staszewski; S. He;
    In 2016 IEEE Radio Frequency Integrated Circuits Symposium (RFIC),
    pp. 206-209, May 2016. DOI: 10.1109/RFIC.2016.7508287
    Keywords: ... CMOS integrated circuits;differential amplifiers;digital-analogue conversion;radiofrequency power amplifiers;CMOS;RFDAC-based outphasing power amplifier;ROPA drain;complementary metal oxide semiconductor;differential quasiload-insensitive class-E branch PA;digital amplitude control word;efficiency 49.2 percent;frequency 5.9 GHz;power back-off;radiofrequency digital-to-analog converter;segmentation technique;size 40 nm;word length 3 bit;Bandwidth;CMOS integrated circuits;Dynamic range;Loading;Modulation;Power generation;Switches;CMOS power amplifier;Chireix combiner;Class-E;Outphasing power amplifier;RFDAC.

  9. A 112W GaN dual input Doherty-Outphasing Power Amplifier
    A. R. Qureshi; M. Acar; J. Qureshi; R. Wesson; L. C. N. de Vreede;
    In 2016 IEEE MTT-S International Microwave Symposium (IMS),
    pp. 1-4, May 2016.

  10. Silicon-Based Technology for Integrated Waveguides and mm-Wave Systems
    V. Jovanovic; G. Gentile; R. Dekker; P. de Graaf; L. C. N. de Vreede; L. K. Nanver; M. Spirito;
    IEEE Transactions on Electron Devices,
    Volume 62, Issue 10, pp. 3153-3159, Oct 2015.

  11. Outphasing transmitters, enabling digital-like amplifier operation with high efficiency and spectral purity
    L. C. N. de Vreede; M. Acar; D. A. Calvillo-Cortes; M. P. van der Heijden; R. Wesson; M. de Langen; J. Qureshi;
    IEEE Communications Magazine,
    Volume 53, Issue 4, pp. 216-225, April 2015.

  12. Non-intrusive near-field characterization of distributed effects in large-periphery LDMOS RF power transistors
    R. Hou; M. Spirito; R. Heeres; F. van Rijs; L. C. N. de Vreede;
    In 2015 IEEE MTT-S International Microwave Symposium,
    pp. 1-3, May 2015.

  13. A Wideband 2 \times 13-bit All-Digital I/Q RF-DAC
    M. S. Alavi; R. B. Staszewski; L. C. N. de Vreede; J. R. Long;
    IEEE Transactions on Microwave Theory and Techniques,
    Volume 62, Issue 4, pp. 732-752, April 2014.

  14. Analysis of pure- and mixed-mode class-B outphasing amplifiers
    D. A. Calvillo-Cortes; L. C. N. de Vreede;
    In 2014 IEEE 5th Latin American Symposium on Circuits and Systems,
    pp. 1-4, Feb 2014.

  15. A package-integratable six-port reflectometer for power devices
    R. G. Venter; Rui Hou; K. Buisman; M. Spirito; K. Werner; L. C. N. de Vreede;
    In 2014 IEEE MTT-S International Microwave Symposium (IMS2014),
    pp. 1-4, June 2014.

  16. Silicon-Filled Rectangular Waveguides and Frequency Scanning Antennas for mm-Wave Integrated Systems
    G. Gentile; V. Jovanovic; M. J. Pelk; L. Jiang; R. Dekker; P. de Graaf; B. Rejaei; L. C. N. de Vreede; L. K. Nanver; M. Spirito;
    IEEE Transactions on Antennas and Propagation,
    Volume 61, Issue 12, pp. 5893-5901, Dec 2013.

  17. A Package-Integrated Chireix Outphasing RF Switch-Mode High-Power Amplifier
    D. A. Calvillo-Cortes; M. P. van der Heijden; M. Acar; M. de Langen; R. Wesson; F. van Rijs; L. C. N. de Vreede;
    IEEE Transactions on Microwave Theory and Techniques,
    Volume 61, Issue 10, pp. 3721-3732, Oct 2013.

  18. Ultra-wide band CPW to substrate integrated waveguide (SIW) transition based on a U-shaped slot antenna
    G. Gentile; B. Rejaei; V. Jovanovic; L. K. Nanver; L. C. N. de Vreede; M. Spirito;
    In 2013 European Microwave Integrated Circuit Conference,
    pp. 25-28, Oct 2013.

  19. Non-intrusive characterization of active device interactions in high-efficiency power amplifiers
    R. Hou; M. Spirito; J. Gajadharsing; L. C. N. de Vreede;
    In 2013 IEEE MTT-S International Microwave Symposium Digest (MTT),
    pp. 1-3, June 2013.

  20. Synthesized pulsed bias for device characterization
    A. Kumar Manjanna; K. Buisman; M. Spirito; M. Marchetti; M. Pelk; L. C. N. de Vreede;
    In 81st ARFTG Microwave Measurement Conference,
    pp. 1-4, June 2013.

  21. Device characterization for LTE applications with wideband baseband, fundamental and harmonic impedance control
    A. K. Manjanna; M. Marchetti; K. Buisman; M. Spirito; M. J. Pelk; L. C. N. de Vreede;
    In 2013 European Microwave Conference,
    pp. 255-258, Oct 2013.

  22. A 2 #x00D7;13-bit all-digital I/Q RF-DAC in 65-nm CMOS
    M. S. Alavi; G. Voicu; R. B. Staszewski; L. C. N. de Vreede; J. R. Long;
    In 2013 IEEE Radio Frequency Integrated Circuits Symposium (RFIC),
    pp. 167-170, June 2013.

  23. On the bandwidth performance of Doherty amplifiers
    L. C. N. de Vreede; R. Gajadharsing; W. C. E. Neo;
    In 2013 IEEE International Wireless Symposium (IWS),
    pp. 1-4, April 2013.

  24. A 70W package-integrated class-E Chireix outphasing RF power amplifier
    D. A. Calvillo-Cortes; M. P. van der Heijden; L. C. N. de Vreede;
    In 2013 IEEE MTT-S International Microwave Symposium Digest (MTT),
    pp. 1-3, June 2013.

  25. All-Digital RF I/Q Modulator
    M. S. Alavi; R. B. Staszewski; L. C. N. de Vreede; A. Visweswaran; J. R. Long;
    IEEE Transactions on Microwave Theory and Techniques,
    Volume 60, Issue 11, pp. 3513-3526, Nov 2012.

  26. RF Power Insensitive Varactors
    K. Buisman; C. Huang; P. J. Zampardi; L. C. N. de Vreede;
    IEEE Microwave and Wireless Components Letters,
    Volume 22, Issue 8, pp. 418-420, Aug 2012.

  27. On the Compression and Blocking Distortion of Semiconductor-Based Varactors
    C. Huang; K. Buisman; P. J. Zampardi; L. E. Larson; L. C. N. de Vreede;
    IEEE Transactions on Microwave Theory and Techniques,
    Volume 60, Issue 12, pp. 3699-3709, Dec 2012.

  28. Contactless measurement of in-circuit reflection coefficients
    Rui Hou; M. Spirito; B. J. Kooij; F. van Rijs; L. C. N. de Vreede;
    In 2012 IEEE/MTT-S International Microwave Symposium Digest,
    pp. 1-3, June 2012.

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

  30. On the design of package-integrated RF high-power amplifiers
    D. A. Calvillo-Cortes; K. Shi; M. de Langen; F. van Rijs; L. C. N. de Vreede;
    In 2012 IEEE/MTT-S International Microwave Symposium Digest,
    pp. 1-3, June 2012.

  31. Digital predistortion for dual-input Doherty amplifiers
    H. Cao; J. Qureshi; T. Eriksson; C. Fager; L. de Vreede;
    In 2012 IEEE Topical Conference on Power Amplifiers for Wireless and Radio Applications,
    pp. 45-48, Jan 2012.

  32. An Ultra-Low-Power BPSK Receiver and Demodulator Based on Injection-Locked Oscillators
    H. Yan; J. G. Macias-Montero; A. Akhnoukh; L. C. N. de Vreede; J. R. Long; J. N. Burghartz;
    IEEE Transactions on Microwave Theory and Techniques,
    Volume 59, Issue 5, pp. 1339-1349, May 2011.

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

  34. Orthogonal summing and power combining network in a 65-nm all-digital RF I/Q modulator
    M. S. Alavi; R. B. Staszewski; L. C. N. de Vreede; J. R. Long;
    In 2011 IEEE International Symposium on Radio-Frequency Integration Technology,
    pp. 21-24, Nov 2011.

  35. A 2-GHz digital I/Q modulator in 65-nm CMOS
    M. S. Alavi; A. Visweswaran; R. B. Staszewski; L. C. N. de Vreede; J. R. Long; A. Akhnoukh;
    In IEEE Asian Solid-State Circuits Conference 2011,
    pp. 277-280, Nov 2011.

  36. Efficient LDMOS device operation for envelope tracking amplifiers through second harmonic manipulation
    M. S. Alavi; F. van Rijs; M. Marchetti; M. Squillante; T. Zhang; S. J. Theeuwen; Y. Volokhine; R. H. Jos; M. P. van der Heijden; M. Acar; L. C. de Vreede;
    In 2011 IEEE MTT-S International Microwave Symposium,
    pp. 1-1, June 2011.

  37. A 65nm CMOS pulse-width-controlled driver with 8Vpp output voltage for switch-mode RF PAs up to 3.6GHz
    D. A. Calvillo-Cortes; M. Acar; M. P. van der Heijden; M. Apostolidou; L. C. N. de Vreede; D. Leenaerts; J. Sonsky;
    In 2011 IEEE International Solid-State Circuits Conference,
    pp. 58-60, Feb 2011.

  38. Efficient LDMOS device operation for envelope tracking amplifiers through second harmonic manipulation
    M. S. Alavi; F. van Rijs; M. Marchetti; M. Squillante; T. Zhang; S. J. C. H. Theeuwen; Y. Volokhine; H. F. F. Jos; M. P. v. d. Heijden; M. Acar; L. C. N. de Vreede;
    In 2011 IEEE MTT-S International Microwave Symposium,
    pp. 1-4, June 2011.

  39. A compact 65W 1.7 #x2013;2.3GHz class-E GaN power amplifier for base stations
    K. Shi; D. A. Calvillo-Cortes; L. C. N. de Vreede; F. van Rijs;
    In 2011 41st European Microwave Conference,
    pp. 1103-1106, Oct 2011.

  40. A compact and power-scalable 70W GaN class-E power amplifier operating from 1.7 to 2.6 GHz
    D. A. Calvillo-Cortes; L. C. N. de Vreede; M. de Langen;
    In Asia-Pacific Microwave Conference 2011,
    pp. 1546-1549, Dec 2011.

  41. A 550 #x2013;1050MHz +30dBm class-E power amplifier in 65nm CMOS
    R. Zhang; M. Acar; M. P. van der Heijden; M. Apostolidou; L. C. N. de Vreede; D. M. W. Leenaerts;
    In 2011 IEEE Radio Frequency Integrated Circuits Symposium,
    pp. 1-4, June 2011.

  42. A compact 65W 1.7 #x2013;2.3GHz class-E GaN power amplifier for base stations
    K. Shi; D. A. Calvillo-Cortes; L. C. N. de Vreede; F. van Rijs;
    In 2011 6th European Microwave Integrated Circuit Conference,
    pp. 542-545, Oct 2011.

  43. A transformer for high-power RF applications using bondwires in parallel
    D. A. Calvillo-Cortes; L. C. N. de Vreede; M. P. van der Heijden;
    In 2011 41st European Microwave Conference,
    pp. 103-106, Oct 2011.

  44. Silicon Filled Integrated Waveguides
    G. Gentile; R. Dekker; P. de Graaf; M. Spirito; M. J. Pelk; L. C. N. de Vreede; B. Rejaei Salmassi;
    IEEE Microwave and Wireless Components Letters,
    Volume 20, Issue 10, pp. 536-538, Oct 2010.

  45. A mixed-signal load-pull system for base-station applications
    M. Marchetti; R. Heeres; M. Squillante; M. Pelk; M. Spirito; L. C. N. de Vreede;
    In 2010 IEEE Radio Frequency Integrated Circuits Symposium,
    pp. 491-494, May 2010.

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

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

  48. A mixed-signal approach for high-speed fully controlled multidimensional load-pull parameters sweep
    M. Squillante; M. Marchetti; M. Spirito; L. C. N. de Vreede;
    In 2009 73rd ARFTG Microwave Measurement Conference,
    pp. 1-5, June 2009.

  49. Active Harmonic Load #x2013;Pull With Realistic Wideband Communications Signals
    M. Marchetti; M. J. Pelk; K. Buisman; W. C. E. Neo; M. Spirito; L. C. N. de Vreede;
    IEEE Transactions on Microwave Theory and Techniques,
    Volume 56, Issue 12, pp. 2979-2988, Dec 2008.

  50. Varactor element and low distortion varactor circuit arrangement
    De Vreede, L.C.N.;
    Patent, WO 2007061308, 05 2007.
    document

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

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

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

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

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

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Last updated: 11 Aug 2017