Abstract:An ultrawideband CMOS power amplifier (PA) with high efficiency, high P1dB, and flat small signal gain is proposed. The CMOS PA uses the distributed amplifier concept to extend the operating bandwidth from 3.1 to 10.6 GHz, and incorporates the active load modulation technique to improve the power-added efficiency (PAE). The active load modulation is realized with two cascode power stages using two different bias classes (class-AB and class-B) to increase the PAE. The experimental results show that the output P… Show more
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