Sub-millimeter wave 183 GHz and 366 GHz MMIC membrane sub-harmonic mixers

Summary form only given, as follows. The design, fabrication and testing of broadband fixed-tuned 183 GHz and 366 GHz sub-harmonic mixers is discussed. Two mixer circuits using planar Schottky diodes monolithically integrated with RF/LO and IF matching and filtering networks onto a 3.7 um thick GaAs membrane are presented. The double sideband measurements at room temperature yielded conversion loss and noise temperature of 4.9 dB and 608 K and 6.9 dB and 1220 K for 183 GHz and 366 GHz mixers, respectively.