Centimeter-wave Impatt amplifiers for space communications
Abstract
Two high-efficiency centimeter-wave Impatt amplifiers are used as the final power amplifiers for the 19- and 28.56-GHz signals transmitted from the spacecraft to earth terminal receivers. The 19-GHz amplifier is a 2-stage circulator coupled unit using one Impatt diode per stage, with an output power of 29 dBm and a gain of 16 dB for a dc power input of 17 W. The 28.56-GHz amplifier is a 3-stage device using six Impatt diodes, with an output power of 29.5 dBm and a gain of 21 dB for a dc power input of 22 W. The diode operating temperature is highly controlled so as to insure more than 90% reliability over two years of continuous operation. Design details are given.
- Publication:
-
EASCON 1974; Electronics and Aerospace Systems Convention
- Pub Date:
- 1974
- Bibcode:
- 1974easc.conf..412S
- Keywords:
-
- Amplifier Design;
- Avalanche Diodes;
- Microwave Amplifiers;
- Power Amplifiers;
- Spacecraft Communication;
- Broadband Amplifiers;
- Communication Satellites;
- Domestic Satellite Communications Systems;
- Operating Temperature;
- Power Efficiency;
- Satellite Transmission;
- Electronics and Electrical Engineering