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A high dynamic range fully-active 45–240MHz tunable RF bandpass filter for TV tuners

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6 Author(s)
Jolivet, S. ; NXP Semicond., Caen, France ; Amiot, S. ; Crand, O. ; Bertrand, S.
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A fully-active tunable RF bandpass filter is presented. It uses a novel positive feedback RC “Rauch” structure, based on a wideband amplifier for high dynamic range purposes. The filter, designed in a BiCMOS 0.25μm technology, exhibits a 10dBm IIP3 requirement and a 15dB noise figure. The quality factor of 3 obtained from 45 to 240MHz guarantees the required full integration of the selectivity for TV silicon tuners over more than two octaves of the VHF band.

Published in:

ESSCIRC (ESSCIRC), 2011 Proceedings of the

Date of Conference:

12-16 Sept. 2011