Module Combining Techniques.
Final Technical rept. 21 Jan 74-20 May 75,
WESTINGHOUSE DEFENSE AND ELECTRONIC SYSTEMS CENTER BALTIMORE MD SYSTEMS DEVELOPMENT DIV
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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 121 combining ratio.
- Electrical and Electronic Equipment