NDLI: Blocker and image reject low-IF frontend

Content Provider	IEEE Xplore Digital Library
Author	Qazi, F. Quoc-Tai Duong Dabrowski, J.J.
Copyright Year	2013
Description	Author affiliation: Dept. of Electr. Eng., Linkoping Univ., Linköping, Sweden (Qazi, F.; Quoc-Tai Duong; Dabrowski, J.J.)
Abstract	In this paper we present a design of a low-IF receiver frontend using a selective N-path filter which serves blocker rejection, image rejection, and downconversion. The filter makes use of quadrature impedance upconversion technique using multiphase clocking and can be programmed by baseband capacitance and gm-cell transconductance values to meet the low-IF criterion in various cases. Presented is both a mathematical model of the filter and circuit simulation results including parasitic effects. Image rejection of 14 dB at IF that is provided by the filter mitigates the demands for the ultimate image rejection by the IQ mode. The blocker rejection at IF is larger than 50 dB. Designed in in 65 nm CMOS the low-IF receiver frontend with a modified N-path filter in simulations achieves NF <; 6 dB and OOB IIP3 > +8 dBm in 0.5-1 GHz band.
Starting Page	1
Ending Page	4
File Size	268102
Page Count	4
File Format	PDF
ISBN	9783000437854
DOI	10.1109/ECCTD.2013.6662258
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2013-09-08
Publisher Place	Germany
Access Restriction	Subscribed
Rights Holder	TU Dresden
Subject Keyword	Radio frequency Baseband Filter banks Receivers Bandwidth Impedance Noise measurement
Content Type	Text
Resource Type	Article

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4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
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