A 100-GHz HBV frequency quintupler using microstrip elements

Journal article, 2004

A new quintupler concept using a heterostructure barrier varactor (HBV) has been fabricated and measured. The multiplier consists of a quartz circuit mounted in a full height crossed waveguide block, and hence uses a mixture of waveguide components and microstrip elements. The embedding impedance for the fundamental frequency is provided by tuneable backshorts, whereas conventional microstrip circuit elements are used for impedance matching for the third and fifth harmonic. This topology is highly suitable for monolithic integration, and a peak conversion efficiency of 4.9 % was measured at 102.5 GHz with an input power of 13 dBm.