Accession Number : AD0776810

Title :   Efficiency Enhancement in Megawatt Level Broadband Microwave Amplifiers.

Descriptive Note : Semiannual technical rept. 17 Nov 72-31 May 73,

Corporate Author : VARIAN ASSOCIATES PALO ALTO CALIF

Personal Author(s) : Butwell,Robert

Report Date : FEB 1974

Pagination or Media Count : 19

Abstract : The report covers the first six months of effort on a theoretical and experimental investigation of methods of improving the conversion efficiency of relatively broadband linear beam amplifiers operating at a megawatt of peak power. An initial electrical design of an S-band cloverleaf Twystron amplifier has been accomplished. A mechanical layout drawing has been generated. The main cloverleaf circuits have a cold pass band of 18.2% and a minimum hot band interaction impedance of 540 ohms. Beam and circuit parameters were input to the large signal program. The computer predicted performance shows a 10% bandwidth with minimum efficiency of 43%. Predicted band center efficiency is 56%. (Author)

Descriptors :   *Microwave amplifiers, Broadband, Klystrons, Power amplifiers, S band

Subject Categories : Electrical and Electronic Equipment

Distribution Statement : APPROVED FOR PUBLIC RELEASE