G-band quad-port balanced multiplier with 111.27 mW continuous-wave output power
A 215～230 GHz Schottky varactor-based frequency doubler utilizing novel four-port balanced configu-ration has been developed with improved conversion efficiency and power-handling capability.The proposed dou-bler,featuring doubled number of anodes in conventional balanced ones,could inhibit the odd-and fourth-order harmonics.Thus,better conversion efficiency and doubled power handling capability could be achieved.At room temperature,the fabricated doubler exhibits a～39.5%peak conversion efficiency(@218 GHz)for an input power of 196～340 mW,which is proved to be a perfect solution for the generation of high power terahertz waves even at higher frequencies.
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