Abstract
This brief presents the analysis and coherent design method of a high-efficiency broadband parallel-circuit Class-E power amplifier with second harmonic control circuit. The power amplifier’s (PA) broadband characteristic is achieved through analysis of the load network using double reactance compensation technique. Using a high power LDMOS transistor and operated from a 35 V supply voltage, the practical PA exhibits 41.5–44.1 dBm output power and 79%–82.2% drain efficiency over 115–155 MHz frequency range. The measurement results show good agreements with the simulation results and theory.
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