DIODE, MILLIMETER WAVE TYPE MIXER (3.2 MM).
Final rept. 1 Jun 63-30 Jun 67,
ADVANCED TECHNOLOGY CORP TIMONIUM MD
Pagination or Media Count:
A review is presented on the 94 GHz mixer diode development, conversion loss, and noise figure measurements. Balanced mixer results at 94 GHz are described using a successfully demonstrated broadband 3 dB directional coupler. Tunnel diodes were investigated as mixers, but were dropped when the results of welded junction diodes appeared to be much superior. The design of 200 to 400 MHz broadband amplifiers for use as preamps and post amplifiers is presented along with test data. The design of the 94 GHz solid state source is described. The transistor driver is designed to provide 16 watts at 290 MHz. The transistor driver or exciter consists of an oscillator at 72 MHz followed by a buffer, an amplifier-multiplier to 290 MHz, and two stages of power gain to achieve 20 watts. A varactor multiplier chain, consisting of six stages, follows the transistor driver. The six varactor stages chosen are four triplers followed by two doublers. Author
- Electrical and Electronic Equipment