Title :
A high-Q and wide-dynamic-range CMOS IF bandpass filter for monolithic receivers
Author :
Choi, Y.W. ; Luong, H.C.
Abstract :
Design of a 6-th-order CMOS Gm-C bandpass filter with automatic tuning for LF filtering in monolithic receivers is presented. A linearized transconductance (Gm) cell is designed and optimized for both noise and linearity. The Gm cells of the biquads and the tuning circuitry are implemented using generic Gm 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; Gm-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;
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
DOI :
10.1109/ISCAS.2000.856279
