DEVELOPMENT OF TRANSMITTER TUBE FOR TROPOSCATTER APPLICATIONS.
Triannual rept. no. 2, 1 Nov 68-28 Feb 69,
HUGHES AIRCRAFT CO TORRANCE CALIF ELECTRON DYNAMICS DIV
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The program objectives are to determine the design criteria for a highly efficient 50 overall efficiency including focusing and cooling power, 10 kW CW traveling-wave amplifier at C-band and to construct, test and deliver two 2 advanced exploratory development models of the device. This amplifier is to have 11 dB of gain to boost the output power of existing 1 kW troposcatter systems using readily available power generators. Techniques to improve the efficiency by reducing the power necessary to cool the device are in integral part of the program. The tube employs a coupled cavity interaction circuit with a solenoid focused, semi-confined flow electron beam. Improvement in basic tube efficiency is accomplished by voltage jump and phase velocity tapering combined with collector depression. Cooling efficiency is improved by utilizing vapor phase nucleate boiling cooling, which eliminates the need for a coolant pump. During the report period cold test work and fabrication of the first advanced exploratory model tube were completed with the exception of attaching the waveguides. Author
- Electrical and Electronic Equipment
- Radio Communications