Title :
A tunable low power BiCMOS continuous-time Gm-C lowpass filter
Author :
Boehm, K. ; Pfau, J. ; Schnepp, H.
Author_Institution :
Daimler Chrysler Res., Ulm, Germany
Abstract :
A monolithically integrated 5th order lowpass filter with a tunable cutoff frequency is presented. The cutoff frequency can be tuned via a control voltage between 30 kHz and 180 kHz. This circuit may serve as channel selecting filters in direct conversion receivers for various cellular radio services with different bandwidth (e.g. IS-54, GSM, etc.). The main design goals are low power consumption, a large tuning range, good linearity and a high dynamic range
Keywords :
BiCMOS integrated circuits; cellular radio; circuit tuning; continuous time filters; gyrators; low-pass filters; radio receivers; 30 to 180 kHz; BiCMOS continuous-time lowpass filter; GSM; IS-54; bandwidth; cellular radio services; channel selecting filters; control voltage; direct conversion receivers; gyrator implementation; high dynamic range; large tuning range; low power consumption; monolithically integrated fifth order lowpass filter; tunable cutoff frequency; tunable low power lowpass filter; Bandwidth; BiCMOS integrated circuits; Cutoff frequency; Energy consumption; Filters; GSM; Land mobile radio cellular systems; Receivers; Tunable circuits and devices; Voltage control;
Conference_Titel :
Radio and Wireless Conference, 1999. RAWCON 99. 1999 IEEE
Conference_Location :
Denver, CO
Print_ISBN :
0-7803-5454-0
DOI :
10.1109/RAWCON.1999.810969
