Title :
A 1V 14mW-per-Channel Flexible-IF CMOS Analog-Baseband IC for 802.11a/b/g Receivers
Author :
Mak, Pui-In ; U, Seng-Pan ; Martins, R.P.
Author_Institution :
Analog & Mixed-Signal VLSI Lab., Macau Univ.
Abstract :
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
Keywords :
CMOS analogue integrated circuits; low-power electronics; operational amplifiers; radio receivers; switched current circuits; wireless LAN; 0.35 micron; 1 V; 14 mW; 20 MHz; 40 MHz; CMOS integrated circuits; I/Q demodulation; IEEE 802.11a/b/g; analog-baseband integrated circuits; channel-selection architecture; constant-bandwidth gain adjustment; flexible-IF reception; programmable-gain amplifier; series-switching mixers; stopband rejection; wireless LAN; Analog integrated circuits; CMOS analog integrated circuits; CMOS integrated circuits; CMOS process; Demodulation; Filtering; Filters; Signal generators; Switching circuits; Voltage;
Conference_Titel :
VLSI Circuits, 2006. Digest of Technical Papers. 2006 Symposium on
Conference_Location :
Honolulu, HI
Print_ISBN :
1-4244-0006-6
DOI :
10.1109/VLSIC.2006.1705396
