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A 6th order 1.6 to 3.2GHz tunable low-pass linear phase gm-C filter for fiber optic adaptive EDC receivers

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9 Author(s)
Dalius Baranauskas ; Pacific Microchip Corp., Los Angeles, California 90045, USA ; Denis Zelenin ; Matthias Bussmann ; Salam Elahmadi
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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.

Published in:

2009 IEEE Radio Frequency Integrated Circuits Symposium

Date of Conference:

7-9 June 2009