Inter-Stage Tunable Notch Filter for a Multi-Band WCDMA Receiver

Toshihiko ITO; Masaki KANEMARU; Satoshi FURUYA; Dong TA NGOC HUY; Kenichi OKADA; Akira MATSUZAWA

doi:10.1587/transele.E95.C.1776

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Inter-Stage Tunable Notch Filter for a Multi-Band WCDMA Receiver

Toshihiko ITO, Masaki KANEMARU, Satoshi FURUYA, Dong TA NGOC HUY, Kenichi OKADA, Akira MATSUZAWA

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Keywords: CMOS, receiver, notch filter, tunable, reconfigurable

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2012 Volume E95.C Issue 11 Pages 1776-1782

DOI https://doi.org/10.1587/transele.E95.C.1776

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Abstract

This paper presents a multi-band WCDMA receiver consisting of a multi-band low noise amplifier (LNA), a multi-band mixer and an inter-stage tunable notch filter. The notch filter is used to suppress Tx leakage, and 0.8-1.5GHz (66%) of tuning range is achieved. The receiver achieves 33 and 30dB conversion gain, 6.4 and 8dB NF, 50 and 35.5dBm IIP₂, and -6 and -4.7dBm IIP₃ at 0.8 and 1.5GHz, respectively. The power consumption is 121mW from a 1.8-V power supply. The receiver is implemented in a 0.18-µm CMOS process.

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