CMOS-Based Active Tunable Radio Frequency Filter

Author

Li, Jin-Shun ; Wu, Jheng-Da ; Chiang, Yen-Lung ; Shieh, Ming-Liang ; Tu, Chih-Ho ; Wu, Janne-Wha ; Tang, Ching-Wen ; Juang, Ying-Zong

Author_Institution

Dept. of Electr. Eng., Nat. Chung Cheng Univ., Chiayi, Taiwan

fYear

2009

fDate

7-9 Dec. 2009

Firstpage

589

Lastpage

592

Abstract

A RF tunable active bandpass filter with active inductor using Q-enhancement circuit is presented. The RF active filter was implemented by the TSMC 0.35 Â¿m 3P3M BiCMOS process. In order to improve the quality factor of the active inductor, the Q-enhancement circuit was used to compensate the loss of the active inductor. The insertion loss of the RF tunable active filter is about 0.5 dB, and the tuning range of center frequency is from 725 MHz to 2050 MHz.

Keywords

BiCMOS digital integrated circuits; UHF filters; active filters; band-pass filters; circuit tuning; inductors; 3P3M BiCMOS process; CMOS-based active tunable radio frequency filter; Q-enhancement circuit; RF tunable active bandpass filter; active inductor; frequency 725 MHz to 2050 MHz; loss 0.5 dB; size 0.35 mum; Active filters; Active inductors; Band pass filters; BiCMOS integrated circuits; Circuit optimization; Insertion loss; Q factor; Radio frequency; Tunable circuits and devices; Tuning;

fLanguage

English

Publisher

ieee

Conference_Titel

Innovative Computing, Information and Control (ICICIC), 2009 Fourth International Conference on

Conference_Location

Kaohsiung

Print_ISBN

978-1-4244-5543-0

Type

conf

DOI

10.1109/ICICIC.2009.139

Filename

5412246