Development of Traveling Wave Tube (TWT) transmitter amplifier for communication satellites 60 GHz/10 W
Abstract
For communication between geostationary satellites a transmitter using a TWT amplifier with frequencies in the region of 60 GHz and output power of a few watts is proposed. The design objectives for the electron gun were realized using a computer program, which also takes into account the thermal velocities of the electrons, to dimension the electrodes. A focusing electrode and a mixed metal cathode with a low beam compression ratio are employed in the gun. All requirements for the beam focusing system are met using an extremely precise machined integrated PPM system and SmCo5 magnets. An easily manufacturable delay line structure was realized using a diffusion brazed interdigital line consisting of only a few parts. The one stage collector can operate with a strongly reduced potential.
- Publication:
-
Final Report
- Pub Date:
- December 1985
- Bibcode:
- 1985aegt.rept.....L
- Keywords:
-
- Electron Guns;
- Pulse Position Modulation;
- Satellite Transmission;
- Transmitters;
- Traveling Wave Tubes;
- Brazing;
- Cathodes;
- Communication Satellites;
- Delay Lines;
- Electrodes;
- Integrated Energy Systems;
- Electronics and Electrical Engineering