Jeng-Han TsaiHong-Yuan YangTIAN-WEI HUANGHUEI WANG2018-09-102018-09-102008-08https://www.scopus.com/inward/record.uri?eid=2-s2.0-49249106569&doi=10.1109%2fLMWC.2008.2001021&partnerID=40&md5=7d9dfd3709405ac67aebf9a80800a609This 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 ± 1.5 dB measured conversion gain from 30 to 100 GHz with a compact chip size of 0.35 mm 2. 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. © 2008 IEEE.CMOS; E-band; Gilbert-cell; Millimeter-wave (MMW); Monolithic microwave integrated circuit (MMIC); Sub-harmonicjournal article10.1109/LMWC.2008.20010212-s2.0-49249106569WOS:000258373400020