For Full-Text PDF, please login, if you are a member of IEICE,|
or go to Pay Per View on menu list, if you are a nonmember of IEICE.
The Q-Enhanced CMOS Active Bandpass Filter with Two-Stage Self-Calibration
Hangue PARK Jongwook ZEONG Wonsuk CHOI Jung Han CHOI
IEICE TRANSACTIONS on Electronics
Publication Date: 2010/12/01
Online ISSN: 1745-1353
Print ISSN: 0916-8516
Type of Manuscript: BRIEF PAPER
Category: Electronic Circuits
CMOS bandpass filter, calibration, out-band attenuation,
Full Text: PDF(631.6KB)>>
A Q-enhanced 8th order CMOS active bandpass filter is presented employing a novel two-stage self-calibration technique. The proposed active filter shows the better out-band attenuation performance than other reported CMOS active bandpass filters. The proposed calibration method enables the stable filtering operation affected by neither the input power variation nor the strong interference power. It is fabricated using 65 nm CMOS process. The measured 3 dB bandwidth is 54 MHz at 2.37 GHz. The insertion loss is 2.9 dB and the out-band attenuation is 27.5 dB at 15 MHz offset frequency. The performance of the filter remains unchanged for 5% supply voltage variations.