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CMOS 138 GHz low-power active mixer with branch-line coupler

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2 Author(s)
Dong-Hyun Kim ; Sch. of Electr. Eng., Korea Univ., Seoul, South Korea ; Jae-Sung Rieh

A 138 GHz down-conversion mixer with a branch-line coupler has been developed based on a 90 nm CMOS technology. The fabricated mixer shows a differential conversion gain of 3.7 dB with the mixer core drawing a current 0.66 mA from a 1.2 V supply. The 1 dB gain compression point is estimated to be larger than 6 dBm. The mixer occupies 0.61 0.62 mm2 of chip area excluding pads.

Published in:

Electronics Letters  (Volume:48 ,  Issue: 10 )