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A 1V 14mW-per-Channel Flexible-IF CMOS Analog-Baseband IC for 802.11a/b/g Receivers

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3 Author(s)
Pui-In Mak ; Analog & Mixed-Signal VLSI Lab., Macau Univ. ; Seng-Pan U ; Martins, R.P.

Presented is a low-voltage low-power analog-baseband IC featuring a two-step channel-selection architecture for a flexible-IF reception of 802.11a/b/g. In circuits, it integrates innovatively series-switching mixers for a precise I/Q demodulation; an inside-opamp dc-offset cancellation for area savings and switchability, a switched-current-resistor programmable-gain amplifier for a transient-free constant-bandwidth gain adjustment. Fabricated in a 0.35mum CMOS process, each channel consumes 14mW from 1V, while measuring <1mus gain-switched transient, 32/90dB stopband rejection at 20/40MHz and 15.2dBm IIP3

Published in:

VLSI Circuits, 2006. Digest of Technical Papers. 2006 Symposium on

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