Accession Number : AD0809256

Title :   DEVELOPMENT OF TRANSMITTER TUBE FOR TROPOSCATTER APPLICATIONS.

Descriptive Note : Triannual rept. no. 1, 1 Jun-30 Sep 66,

Corporate Author : HUGHES AIRCRAFT CO LOS ANGELES CA ELECTRON DYNAMICS DIV

Personal Author(s) : Brown, Thomas B. ; Sauseng, Otto G. ; Lange, Gordon A. ; Dixon, J. C.

Report Date : FEB 1967

Pagination or Media Count : 62

Abstract : The object of this program is to determine the design criteria for a highly efficient (50% overall including focusing and cooling power) 10 kW CW traveling-wave amplifier and demonstrate a feasibility model of the device. This amplifier is to have 11 dB of gain to boost the output of existing 1 kW troposcatter systems using power generators readily available. Techniques to improve the efficiency by reducing the power necessary to cool the device are an integral part of the program. Improvement in basic tube efficiency is to be accomplished by voltage jump tapering -- a recently developed technique which has demostrated over 60% efficienty in an experimental traveling-wave amplifier. Cooling efficiency will be improved by utilizing vapor phase (nucleate boiling) cooling, eliminating the need for a coolant pump. (Author)

Descriptors :   (*TRAVELING WAVE TUBES, FEASIBILITY STUDIES), (*MICROWAVE AMPLIFIERS, TRAVELING WAVE TUBES), TROPOSPHERE, SCATTERING, FOCUSING, NUCLEATE BOILING, COOLING, C BAND, VAPORS, EFFICIENCY, ELECTRON GUNS, X BAND, COMPUTER PROGRAMS, ALUMINUM, KLYSTRONS, WAVEGUIDE WINDOWS, COUPLING CIRCUITS, ELECTRON BEAMS, SPACE CHARGE, ELECTRICAL IMPEDANCE.

Subject Categories : Electrical and Electronic Equipment

Distribution Statement : APPROVED FOR PUBLIC RELEASE