Accession Number : ADA019384

Title :   Module Combining Techniques.

Descriptive Note : Final Technical rept. 21 Jan 74-20 May 75,

Corporate Author : WESTINGHOUSE DEFENSE AND ELECTRONIC SYSTEMS CENTER BALTIMORE MD SYSTEMS DEVELOPMENT DIV

Personal Author(s) : Morse,Alfred W.

Report Date : DEC 1975

Pagination or Media Count : 91

Abstract : The Module Combining Techniques program performed an evaluation of power combining techniques for solid state transmitters with a subsequent demonstration of the best techniques in a one kilowatt solid state module. The prime objective was to study and demonstrate combining techniques for solid state devices in high power CW applications, with high gain and efficiency, wide bandwidth, and good phase and amplitude stability. The program developed a simple and easily maintainable air-cooled design for applications which would normally demand the efficiency of water cooling. In addition, the power amplifier is highly miniaturized, with a shape constrained to the inherent cross-sectional requirements of an active element array antenna. Heat pipes are used to efficiently spread the concentrated heat load and also permit the placement of cooling fins at a more convenient location than directly under the transistors. The amplifier is composed of twelve 100-watt modules united by an efficient, broadband, miniature, high power combiner with a 12:1 combining ratio.

Descriptors :   *Power amplifiers, Modules(Electronics), Solid state electronics, Transistor amplifiers, Junction transistors, L band, Broadband, Microwave equipment, Power dividers, Couplers, Heat pipes, Miniature electronic equipment

Subject Categories : Electrical and Electronic Equipment

Distribution Statement : APPROVED FOR PUBLIC RELEASE