A frequency-scanning quasi-optical power amplifier combiner
employing the microstrip leaky-mode array is presented. A
prototype of measured amplifiertransducer gain of 7.22 dB at 9.9
GHz, and directivity of 22.03 dBi are obtained. The 3-dB
beamwidth (Az/El) is 18.67° / 19.30°
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