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Fully Integrated High-Q Switched Capacitor Bandpass Filter with Center Frequency and Bandwidth Tuning

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5 Author(s)
Ahmed el Oualkadi ; Microelectronics & Microwaves laboratories, Université Catholique de Louvain, Electrical Engineering Department, 3, Place du Levant, 1348 Louvain-la-Neuve, Belgium ; Majid el Kaamouchi ; Jean-Marie Paillot ; Danielle Vanhoenacker-Janvier
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This paper proposes to study the design of a novel high-Q fully integrated switched capacitor bandpass filter. This circuit, implemented in CMOS technology, allows a tunable high selectivity over a broad frequency band. The proposed architecture is intended to replace passive surface acoustic wave (SAW) filters in low-cost wireless radio-communication applications. To show the feasibility of the proposed filter a prototype has been fabricated and tested. Measurements show quality factors up to 300, and a tunable center frequency range of 290 MHz [240 - 530 MHz] with a bandwidth tuning.

Published in:

2007 IEEE Radio Frequency Integrated Circuits (RFIC) Symposium
IEEE RFIC Virtual Journal

Date of Conference:

3-5 June 2007