DESIGN AND DEVELOPMENT OF THREE-WATT K SUB U-BAND TRAVELING-WAVE TUBE.
Final engineering rept.
MICROWAVE ELECTRONICS PALO ALTO CALIF
Pagination or Media Count:
This program was directed toward the development and final design of a 3-watt high gain PPM-focused TWT for operation over the 12 to 18 Gc range. A PPM-focused metal ceramic tube was developed which substantially bettered every electrical and mechanical design objective, operating without performance degradation over severe temperature, shock and vibration environments. The resulting TWT package is small and compact, less than 8-12 inches long 12 inches maximum, 1-716 inches on a side in a rectangular cross section 3 inches diameter maximum and weighing less than 3 pounds 6 pounds maximum. The power output is substantially over 3 watts with more than 38-db gain realized at the 2-watt output level. Various phases of tube development provided many advanced techniques, such as pyrolytic carbon attenuators, temperature-compensated oriented-ferrite magnets, excellent rf waveguide coupling circuits, and a reproducible gun and helix circuit which allowed the manufacture and shipment of 10 tubes of final design having very reproducible characteristics. Author