High frequency and high Q CMOS GM-C bandpass filter with automatic on-chip tuning

Author

Elhallabi, H. ; Sawan, M.

Author_Institution

Dept. of Electr. Eng., Ecole Polytech. de Montreal, Que., Canada

fYear

2001

fDate

29-31 Oct. 2001

Firstpage

169

Lastpage

172

Abstract

A maximally flat magnitude 70 MHz fourth-order bandpass filter with an on-chip automatic tuning system is presented. The input equivalent noise is 19 μV/sqr(Hz) which shows that the nonlinearity at the input of the filter is very small. The IIP3 (the input level of the third-order intercept point) of the filter is -9.25dBm. The complete system operates with a supply voltage of 2.2 V. All this has been achieved due to the use of a low distortion transconductor, and the realization of an advanced on-chip automatic tuning system for both frequency and bandwidth control. The whole circuit has been implemented in 0.35 μm CMOS technology available through the Canadian Microelectronics Corporation (CMC).

Keywords

CMOS analogue integrated circuits; Q-factor; VHF filters; automatic frequency control; band-pass filters; circuit tuning; continuous time filters; 0.35 micron; 2.2 V; 70 MHz; CMOS GM-C bandpass filter; CMOS technology; HF filter; IIP3; automatic on-chip tuning; bandwidth control; fourth-order bandpass filter; frequency control; high Q bandpass filter; high frequency filter; low distortion transconductor; maximally flat magnitude; third-order intercept point; Automatic voltage control; Band pass filters; Bandwidth; CMOS technology; Circuit optimization; Control systems; Frequency; System-on-a-chip; Transconductors; Tuning;

fLanguage

English

Publisher

ieee

Conference_Titel

Microelectronics, 2001. ICM 2001 Proceedings. The 13th International Conference on

Print_ISBN

0-7803-7522-X

Type

conf

DOI

10.1109/ICM.2001.997514

Filename

997514