Abstract

This paper presents a novel method to investigate the efficiency of a tripler with a HBV diode based on Al0.7Ga0.3As/GaAs. The HBV diodes with different mesa diameters have been fabricated and their DC characteristics have been measured. These characteristics are used by a combined genetic algorithm/harmonic balance simulator to calculate the optimum impedances and output powers at the frequency of 255 GHz. A comparison of the conversion efficiencies are presented for the different structures.