Fast amplifier PAE optimization using resonant frequency interval halving with an evanescent-mode cavity tuner

Fast tuning of a new evanescent-mode cavity tuner is demonstrated to optimize amplifier device power-added efficiency in simulations. The tuning is accomplished by adjusting the two resonant frequencies of the two-element tuner network with a modified interval halving approach. The tuner model is used to adjust the load impedance presented to a power amplifier device. Simulation results show that the tuner is able to quickly converge to provide optimum-efficiency matching to the device from different starting resonant-frequency combinations.