DocumentCode :
1453020
Title :
A 1.6–3.2-GHz Sixth-Order 
13.1-dBm OIP3 Linear Phase 
-
Author :
Baranauskas, Dalius ; Zelenin, Denis ; Bussmann, Matthias ; ElAhmadi, Salam ; Edwards, Jomo K. ; Gill, Christopher A.
Author_Institution :
Pacific Microchip Corp., Los Angeles, CA, USA
Volume :
58
Issue :
5
fYear :
2010
fDate :
5/1/2010 12:00:00 AM
Firstpage :
1314
Lastpage :
1322
Abstract :
A sixth-order low-pass g m-C filter for fiber-optic electrical dispersion compensation receivers cascades three biquads permitting a reduction of group delay variation down to 10 ps. A cutoff frequency is tuned from 1.6 to 3.2 GHz by using two methods, namely, changing gm and switching a CMOS varactor´s polarity. Output third-order intercept point reaches 13.1 dBm and total harmonic distortion is below -40 dB at 0.9 V pp-diff output. The continuous time filter is implemented in a 0.18-??m SiGe process, it occupies 0.17 mm2 on a 3.2 ?? 3.7 mm2 test chip and consumes 0.3 W from a 3.3-V supply.
Keywords :
CMOS integrated circuits; active filters; continuous time filters; linear phase filters; low-pass filters; microwave filters; optical fibre dispersion; optical receivers; varactors; CMOS varactor; OIP3 linear phase gm-C filter; SiGe; continuous time filter; cutoff frequency; electrical dispersion compensation receivers; fiber-optic EDC receivers; frequency 1.6 GHz to 3.2 GHz; group delay variation; output third-order intercept point; power 0.3 W; sixth-order low-pass gm-C filter; size 0.18 micron; total harmonic distortion; voltage 3.3 V; ${ g}_{ m}$ $C$
fLanguage :
English
Journal_Title :
Microwave Theory and Techniques, IEEE Transactions on
Publisher :
ieee
ISSN :
0018-9480
Type :
jour
DOI :
10.1109/TMTT.2010.2042862
Filename :
5438825
Link To Document :
