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

Author

El Oualkadi, Ahmed ; El Kaamouchi, Majid ; Paillot, Jean-Marie ; Vanhoenacker-Janvier, Danielle ; Flandre, Denis

Author_Institution

Univ. Catholique de Louvain, Louvain-la-Neuve

fYear

2007

fDate

3-5 June 2007

Firstpage

681

Lastpage

684

Abstract

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.

Keywords

CMOS analogue integrated circuits; Q-switching; UHF filters; VHF filters; band-pass filters; circuit tuning; integrated circuit design; surface acoustic wave filters; switched capacitor filters; CMOS technology; bandwidth tuning; center frequency tuning; frequency 240 MHz to 530 MHz; integrated high-Q switched capacitor bandpass filter; low-cost wireless radio-communication; passive surface acoustic wave filters; Band pass filters; Bandwidth; CMOS technology; Capacitors; Circuit optimization; Frequency; Integrated circuit technology; Surface acoustic waves; Tunable circuits and devices; Tuning; CMOS; High-Q; bandpass; broadband; switched capacitor filter; tunable;

fLanguage

English

Publisher

ieee

Conference_Titel

Radio Frequency Integrated Circuits (RFIC) Symposium, 2007 IEEE

Conference_Location

Honolulu, HI

ISSN

1529-2517

Print_ISBN

1-4244-0530-0

Electronic_ISBN

1529-2517

Type

conf

DOI

10.1109/RFIC.2007.380974

Filename

4266522