A 25-75-GHz broadband Gilbert-cell mixer using 90-nm CMOS technology
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Date
2007-04-01
Authors
Jeng-Han Tsai
Pei-Si Wu
Chin-Shen Lin
Tian-Wei Huang
John G.J. Chern
Wen-Chu Huang
Huei Wang
Journal Title
Journal ISSN
Volume Title
Publisher
IEEE Microwave Theory and Techniques Society
Abstract
A compact and broadband 25-75-GHz fully integrated double-balance Gilbert-cell mixer using 90-nm standard mixed-signal/radio frequency (RF) CMOS technology is presented in this letter. A broadband matching network, LC ladder, for Gilbert-cell mixer transconductance stage design is introduced to achieve the flatness of conversion gain and good RF port impedance match over broad bandwidth. This Gilbert-cell mixer exhibits 3plusmn2dB measured conversion gain (to 50-Omega load) from 25 to 75GHz with a compact chip size of 0.30mm2. The OP1 dB of the mixer is 1dBm and -4dBm at 40 and 60GHz, respectively. To the best of our knowledge, this monolithic microwave integrated circuit is the highest frequency CMOS Gilbert-cell mixer to date