HBV Frequency Quintuplers

A 500 GHz heterostructure-barrier-varactor quintupler has been designed and fabricated. The design consists of a mixture of waveguide and microstrip components for impedance matching. A InP based HBV diode is flip-chip mounted onto the quartz circuit, where beam-leads are used for ground connections to the waveguide block. Extensive back-side processing has been carried out in order to create these beam-leads. The multiplier is a frequency scaled version of a successful 100 GHz quintupler with a conversion efficiency of 11.4%