Efficiency-Enhanced, Harmonic-Controlled Class-E Power Amplifier Design

An efficiency-enhanced, harmonic-controlled power amplifier (PA) in class-E mode at 2.6 GHz frequency is presented and simulated in this paper. To achieve efficiency enhancement, maximum power transfer, and less reflection, the input impedance and output impedance of an electrical device are matched with their optimum source and load impedances. Using load-pull analysis, the device's most suitable terminations at source and load are obtained. The harmonic suppression is obtained using a suitable matching network which is optimized to get higher efficiency. Simulation outcomes show that the amplifier with the novel matching network proposed in the paper can achieve 76.8 % drain efficiency (DE), 68.5 % power added efficiency (PAE), 38.9 dBm output power while working with 2.6 GHz frequency.