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  

IEICE TRANSACTIONS on Electronics   Vol.E95-C    No.11    pp.1776-1782
Publication Date: 2012/11/01
Online ISSN: 1745-1353
DOI: 10.1587/transele.E95.C.1776
Print ISSN: 0916-8516
Type of Manuscript: PAPER
Category: Microwaves, Millimeter-Waves
CMOS,  receiver,  notch filter,  tunable,  reconfigurable,  

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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 0.8–1.5 GHz (66%) of tuning range is achieved. The receiver achieves 33 and 30 dB conversion gain, 6.4 and 8 dB NF, 50 and 35.5 dBm IIP2, and -6 and -4.7 dBm IIP3 at 0.8 and 1.5 GHz, respectively. The power consumption is 121 mW from a 1.8-V power supply. The receiver is implemented in a 0.18-µm CMOS process.