Striving for Efficiency: A 475-kHz High-Efficiency Two-Stage Class-E Power Amplifier

This article presents the design and validation for the high-efficiency class-E power amplifier (PA) that won first place in the high-efficiency PA for 475 kHz Student Design Competition held during the 2018 IEEE Microwave Theory and Techniques Society International Microwave Symposium (IMS 2018) in Philadelphia, Pennsylvania. Participants were required to implement and evaluate their own PAs. The team that achieved the highest drain efficiency while satisfying the conditions of the competition rules was the winner.