A high-power amplifier using two 28.8-mm-periphery GaN HEMTs was demonstrated with all matching components inside the package. When biased at 55 V, a power bandwidth of 3.3-3.6 GHz was obtained, with 550-Wpeak output, 12.5-dB associated gain and 66% drain efficiency at 3.45 GHz
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Wu et al. (2006) studied this question.
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