A Unique Approach to Frequency Modulated Continuous Wave (FMCW) Radar
This is my masters thesis at the Michigan State University Electromagnetics Research Group.
- An unusual approach to FMCW radar
- Utilizing two Gunnplexer, Gunn diode based transmit/receive modules
- Shown to be useful for ranging and doppler
- Shown to be capable of SAR imaging
- Developed as part of a low-cost proof-of-concept radar system
- Applications might include automotive radar, motion detection, etc.
Frequency-Modulated Continuous-Wave (FMCW) Radar has traditionally been used in short range applications. Conventional FMCW radar requires the use of expensive microwave mixers and low noise amplifiers. A uniquely inexpensive solution was created, using inexpensive Gunn oscillator based microwave transceiver modules that consist of 3 diodes inside of a resonant cavity. However these transceiver modules have stability problems which cause them to be unsuitable for use in precise FMCW radar applications, when just one module is used. In order to overcome this problem, a unique radar solution was developed which uses a combination of 2 transceiver modules to create a precise FMCW radar system. This unique solution to FMCW radar is proven to be capable of determining range to target, and creating Synthetic Aperture Radar images.