國立臺灣師範大學應用電子科技學系Jeng-Han TsaiHong-Yuan YangTian-Wei HuangHuei Wang2014-10-302014-10-302008-08-011531-1309�http://rportal.lib.ntnu.edu.tw/handle/20.500.12235/32251This letter presents a 30-100 GHz wideband and compact fully integrated sub-harmonic Gilbert-cell mixer using 90 nm standard CMOS technology. The sub-harmonic pumped scheme with advantages of high port isolation and low local oscillation frequency operation is selected in millimeter-wave mixer design. A distributed transconductance stage and a high impedance compensation line are introduced to achieve the flatness of conversion gain over broad bandwidth. The CMOS sub-harmonic Gilbert-cell mixer exhibits -1.5 plusmn 1.5 dB measured conversion gain from 30 to 100 GHz with a compact chip size of 0.35 mm2. The OP1 dB of the mixer is -10.4 dBm and -9.6 dBm at 77 and 94 GHz, respectively. To the best of our knowledge, the monolithic microwave integrated circuit is the first CMOS Gilbert-cell mixer operating up to 100 GHz.CMOSE-bandGilbert-cellmillimeter-wave (MMW)monolithic microwave integrated circuit (MMIC)sub-harmonic.