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A 1.5V 0.7-2.5GHz CMOS Quadrature Demodulator for Multi-Band Direct-Conversion Receivers

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4 Author(s)
Poobuapheun, N. ; Berkeley Wireless Res. Center, California Univ., Berkeley, CA ; Wei-Hung Chen ; Boos, Z. ; Niknejad, A.M.

This paper presents an integrated quadrature demodulator with on-chip frequency divider implemented in a 0.13 mum CMOS technology. The mixer consists of a transconductance stage, a passive current switching stage, and an operational amplifier output stage. A complementary input architecture has been used to increase the transconductance for a given bias current. From 700MHz to 2.5GHz, the demodulator achieves 10dB DSB NF with 9-33 kHz 1/f-noise corner and 35dB of low frequency voltage gain. The total chip draws 20mA-24mA from a single 1.5V supply

Published in:

Custom Integrated Circuits Conference, 2006. CICC '06. IEEE

Date of Conference:

10-13 Sept. 2006

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