Optimal design of MESFET frequency multipliers

In this paper, a design criterium for optimizing frequency doubler terminations for maximum output power (Pout) and conversion gain (Gc) is proposed. The design technique, based at a first step on linear S parameters, leads to the calculation of the MESFET terminations. Although rather simple, this approximation led to promising results: with this method, the highest output power-conversion gain trade-off ever reported was achieved and, also, the experimental and simulation results agreed closely.