Title :
A 6th order 1.6 to 3.2GHz tunable low-pass linear phase gm-C filter for fiber optic adaptive EDC receivers
Author :
Baranauskas, Dalius ; Zelenin, Denis ; Bussmann, Matthias ; ElAhmadi, Salam ; Edwards, Jomo ; Gill, Chris ; Tran, Kelvin ; Linder, Lloyd ; Tan, Harry
Author_Institution :
Pacific Microchip Corp., Los Angeles, CA, USA
Abstract :
A 6th order low-pass 1.6 to 3.2 GHz gm-C filter for fiber optic adaptive EDC receivers cascades three Bi-Quads permitting reduction of group delay variation down to 10 ps. Cut-off frequency is tuned by switching CMOS varactors polarity. THD is below -40 dB at 0.9 Vpp-diff output. CTF is implemented in a 0.18 mum SiGe process, it occupies 0.17 mm2 and consumes 0.3 W from 3.3 V supply.
Keywords :
CMOS integrated circuits; Ge-Si alloys; UHF filters; circuit tuning; continuous time filters; low-pass filters; optical receivers; semiconductor materials; switching circuits; varactors; CMOS varactors polarity switching; SiGe; bi-quads permitting reduction; continuous time filter; cut-off frequency; electrical dispersion compensation; fiber optic adaptive EDC receivers; frequency 1.6 GHz to 3.2 GHz; group delay variation; power 0.3 W; size 0.18 mum; tunable low-pass linear-phase gm-C filter; voltage 3.3 V; Active filters; Adaptive filters; Band pass filters; Cutoff frequency; Delay; Optical fiber filters; Optical fibers; Optical receivers; Tunable circuits and devices; Voltage; Continuous time filters; High-speed integrated circuits; Optical fiber dispersion; Tunable filters;
Conference_Titel :
Radio Frequency Integrated Circuits Symposium, 2009. RFIC 2009. IEEE
Conference_Location :
Boston, MA
Print_ISBN :
978-1-4244-3377-3
Electronic_ISBN :
1529-2517
DOI :
10.1109/RFIC.2009.5135588
