Microstrip Varactor-Tuned Millimeter-Wave Transmitter (Letters)

A 60-GHz varactor-tuned microstrip oscillator intended for use in a millimeter-wave radio relay experiment has been designed and tested. The output power of the transmitter is 110 /spl plusmn/ 15 mW from 58.5 to 60.1 GHz. The oscillator can be frequency-shift keyed (FSK) at a rate up to 200 Mbit/s. The rms FM noise of about 400 Hz/(kHz)/sup 1/2/ meets the required system specifications.