220 GHz Multi Circuit Integrated Front End Based on Solid?State Circuits for High Speed Communication System

This paper presents the research on a 220 GHz multi circuit inte-grated front end based solid-state circuits. integrated integrates subharmonic mixer, 110 tripler, 8 dB hybrid coupler and waveguide bandpass filter (BPF) in one single block. Compared to traditional transceivers which usually use cascade connection of independent mixers multipliers, size proposed front-end block is 25 mm × 20 mm, ten times smaller than cascading transceiver. In order check tripler’s output power, modified compact set between mixer tripler. Due characteristics coupler, deterioration transceiver’s performance caused by mismatch has also been improved. addition, achieve sideband (SSB) communication, BPF with high selectivity circuit. The measured conversion loss fabricated less 11 dB, where LO RF frequency are 37 210?220 GHz. Based this front-end, speed communication system setup it can 10 Gbps data transmission using 16QAM modulation.