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A noise cancellation technique in active RF-CMOS mixers

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2 Author(s)
H. Darabi ; Broadcom, Irvine, CA, USA ; J. Chiu

Based on the physical understanding of noise mechanisms in active mixers, a noise cancellation technique to reduce the flicker-noise contribution of the switches in a Gilbert-type mixer is presented. A prototype double-balanced mixer in 0.13 μm CMOS is fabricated as a proof of concept. The circuit achieves a flicker-noise corner almost an order-of-magnitude lower than that of a standard implementation without compromising the linearity, gain, or power consumption.

Published in:

ISSCC. 2005 IEEE International Digest of Technical Papers. Solid-State Circuits Conference, 2005.

Date of Conference:

10-10 Feb. 2005