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New command circuit design for tuning high-Q pseudo 8-path switched-capacitor filter

Abstract : This paper describes a new association of a high-Q pseudo 8-path switched-capacitor (S-C) bandpass filter and its command circuit made up by a ring VCO with 'XOR' gates. The proposed circuit presents the possibility of tuning over a radio-frequency (RF) broadband allowing to sweep different channels with a high quality factor. Designed with CMOS process (0.35µm, for instance), this circuit is intended to replace the surface acoustic wave (SAW) filters in modern wireless receivers. Measurements carried out on a circuit demonstrator show a tunable center frequency range of 200MHz [300-500MHz], with a quality factor higher than 300.
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https://hal.inria.fr/hal-00947393
Contributor : Ahmed El Oualkadi <>
Submitted on : Saturday, February 15, 2014 - 8:24:27 PM
Last modification on : Thursday, May 27, 2021 - 9:26:02 AM
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Ahmed El Oualkadi, Jean-Marie Paillot, Hervé Guegnaud, Rachid Allam, Lucian Dascalescu. New command circuit design for tuning high-Q pseudo 8-path switched-capacitor filter. IEICE Electronics Express, National Institute of Informatics, 2004, 1 (13), pp.363-367. ⟨10.1587/elex.1.363⟩. ⟨hal-00947393⟩

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