An FM Transceiver for Wireless Communication

The goal of this bachelor project is, by using only discrete components such as transistors, inductors, transformers, capacitors, and resistors, to implement an innovative “frequency modulation (FM)” transceiver for wireless communication.

The FM is invented in 1933 by Edwin Armstrong. In the frequency modulation, information or data, such as a voice or a song, varies (modulates) the frequency of a carrier signal. In other words, at any instant, the amplitude of the input signal is proportional to the frequency deviation of the assigned carrier frequency. A typical FM transceiver is depicted in Fig. 1. It comprises a transmitter (TX) with and a receiver (RX).

Assignment

For the TX part, we considered two/three students and for the RX counterpart two/three candidates as well. Note that we introduced Figs. 3-4 as an example of FM radio. Nevertheless, the students can implement their novel ideas in the TX/RX designs.

Requirements

The key project specifications are listed as follows:

1. Implementing an FM transceiver, which consists of a TX and an RX. Both of these blocks should be realized using only discrete components, and no IC modules are allowed in this FM radio;

2. The operational frequency is between 88–108 MHz;

3. The distance between TX and RX is higher than 5m ;

4. Achieving competitive TX efficiency and decent RX sensitivity.

This bachelor thesis is supervised by Marco Pelk, Masoud Babaie, and Morteza Alavi.

Contact

dr. Morteza Alavi

Electronic Circuits and Architectures Group

Department of Microelectronics

Last modified: 2019-08-05