A high-Q and wide-dynamic-range CMOS IF bandpass filter for monolithic receivers

Author

Choi, Y.W. ; Luong, H.C.

Volume

2

fYear

2000

fDate

2000

Firstpage

144

Abstract

Design of a 6-th-order CMOS G_m-C bandpass filter with automatic tuning for LF filtering in monolithic receivers is presented. A linearized transconductance (G_m) cell is designed and optimized for both noise and linearity. The G_m cells of the biquads and the tuning circuitry are implemented using generic G_m cells for better matching and less power consumption. The filter prototype achieves a measured bandwidth of about 200 kHz at 50.5 MHz (Q=250) and 3.5 MHz at 70 MHz (Q=20). The measured input equivalent noise is 36.3 μV and the IIP₃ is -10 dBm, which corresponds to a dynamic range of about 66 dB. At 2.5 V, the total power consumption is 120 mW

Keywords

CMOS analogue integrated circuits; Q-factor; VHF filters; band-pass filters; biquadratic filters; circuit tuning; integrated circuit design; integrated circuit noise; radio receivers; 120 muW; 2.5 V; 200 kHz; 3.5 MHz; 50.5 MHz; 70 MHz; CMOS IF bandpass filter; G_m-C bandpass filter; automatic tuning; biquads; high-Q bandpass filter; linearized transconductance cell; monolithic receivers; tuning circuitry; wide-dynamic-range bandpass filter; Band pass filters; Circuit noise; Circuit optimization; Design optimization; Energy consumption; Filtering; Linearity; Low-frequency noise; Prototypes; Transconductance;

fLanguage

English

Publisher

ieee

Conference_Titel

Circuits and Systems, 2000. Proceedings. ISCAS 2000 Geneva. The 2000 IEEE International Symposium on

Conference_Location

Geneva

Print_ISBN

0-7803-5482-6

Type

conf

DOI

10.1109/ISCAS.2000.856279

Filename

856279