Comments on “High-Efficiency Class E/F Lumped and Transmission-Line Power Amplifiers”

In the above paper, the author presents the theoretical analysis of a single-ended Class
${\hbox{E}}/{\hbox{F}}_{n}$
mode with explicit derivation of the idealized optimum voltage and current waveforms and load-network parameters with their verification by time- and frequency-domain simulations for a particular case of Class
${\hbox{E}}/{\hbox{F}}_{3}$
mode with a 50% duty cycle. However, some errors have been found which may affect the readers understanding, and they will be clarified in this letter.