The eclipse simulation tests of 12 GHz 200 W TWTA for broadcasting satellites
Abstract
This paper describes an eclipse simulation test on a 12 GHz 200 W TWTA for broadcasting satellites. The 200 W TWTA consists of a traveling-wave tube (TWT) and an electronic power conditioner (EPC). The test was conducted during more than one eclipse season under simulated space conditions. The TWT collector section was directly faced to outer space of the temperature of less than -180 C, while the TWT body section (helix part and electron-gun part) and the EPC mounted on the baseplate, were heated up and cooled down, using adjustable heaters and liquid coolant, between -40 C and +70 C, to simulate eclipse and noneclipse conditions. During these tests, the output power and helix current were monitored with temperature. The results show reasonable values without any defects.
- Publication:
-
Stockholm International Astronautical Federation Congress
- Pub Date:
- October 1985
- Bibcode:
- 1985stoc.iafcY....K
- Keywords:
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- Communication Satellites;
- Eclipses;
- Satellite Transmission;
- Solar Simulation;
- Thermal Cycling Tests;
- Traveling Wave Tubes;
- Broadcasting;
- Command And Control;
- Telemetry;
- Thermal Radiation;
- Communications and Radar