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New high-Q discrete-time LC bandpass filter design with center frequency broadband tuning
Abstract : Discrete-time switched-capacitor filters have been in wide-spread used for a few years, for the realization of stable, accurate and high quality filters. This paper describes the design of a new 8-path pseudo switched capacitor LC bandpass filter and its command circuit made up by a ring voltage controlled oscillator (VCO) with 'XOR' gates. The proposed architecture presents the possibility of tuning over a frequency broadband allowing to sweep different channels with a high quality factor. This circuit is intended to replace the surface acoustic wave (SAW) filters in broadband wireless applications. Experimental results carried out on a prototype show quality factors up to 200, and a tunable center frequency range of 300 MHz [250-550 MHz].
Cited literature [9 references]
https://hal.inria.fr/hal-00947403
Contributor : Ahmed El Oualkadi <>
Submitted on : Saturday, February 15, 2014 - 9:12:13 PM
Last modification on : Thursday, May 27, 2021 - 9:26:02 AM
Long-term archiving on: : Thursday, May 15, 2014 - 11:45:22 AM
Contributor : Ahmed El Oualkadi <>
Submitted on : Saturday, February 15, 2014 - 9:12:13 PM
Last modification on : Thursday, May 27, 2021 - 9:26:02 AM
Long-term archiving on: : Thursday, May 15, 2014 - 11:45:22 AM
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