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A new generation of glass reinforced low capacitance beam lead mixer and PIN diodes has been developed for use at millimetric frequencies. In microstrip circuitry the gallium arsenide mixer diodes display typical conversion losses of 6.5 dB (single ended) and 7.0 dB (balanced) at 94 GHz, and 7.5 dB (single ended) at 140 GHz. A microstrip PIN switch produces greater than 30 dB isolation at 90 GHz with...
This paper describes some circuit design features of MIC sub-systems utilising hybrid-open microstrip techniques which give improved performance, particularly where military environments necessitate a wide operating temperature range and compactness is of prime importance. The design and performance of a J (Ku)-band radar duplexer-receiver MIC sub-system is described to illustrate the points of interest...
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