CMOS digitally programmable filter for multi-standard wireless receivers
作者： H.A. Alzaher , H.O. Elwan , M. Ismail
DOI: 10.1049/EL:20000197
关键词: Frequency response 、 Engineering 、 Chip 、 Electronic engineering 、 CMOS 、 Filter (video) 、 Baseband 、 Operational transconductance amplifier 、 GSM 、 Low-pass filter
摘要: A technique for designing digitally programmable CMOS integrated filters multi-standard wireless receivers is presented. The exhibits the wide frequency range of transconductance amplifier while offering improved linearity. It utilises controlled current followers to provide precise characteristics that can be tuned over a range. lowpass filter designed implementing channel-select in baseband chain receiver. Simulation and experimental results obtained from 1.2 µm chip show response covering IS-54, GSM, IS-95 WCDMA standards.
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