Title :
A 1.5 V active RC filter for WCDMA applications
Author :
Jussila, Jarkko ; Halonen, Kari
Author_Institution :
Electron. Circuit Design Lab., Helsinki Univ. of Technol., Espoo, Finland
Abstract :
This paper describes a low voltage active RC low-pass filter operating in the frequency range needed in a baseband channel selection filter of a WCDMA receiver. The prototype of the filter is a 4th order Chebyshev with 0.1 dB ripple and the -3 dB bandwidth is 2 MHz. The input-referred noise is 210 μVRMS and the simulated dynamic range 68 dB. The simulated current consumption per pole is 680 μA. The tuning of the frequency response is implemented with binary weighted switched capacitor matrices with a 5-bit control. Design and simulation results for a 1.5 V active RC filter are presented
Keywords :
CMOS analogue integrated circuits; Chebyshev filters; RC circuits; active filters; circuit tuning; code division multiple access; frequency response; low-pass filters; radio receivers; switched capacitor filters; 1.5 V; 2 MHz; SC filter; WCDMA applications; active RC filter; active low-pass filter; baseband channel selection filter; binary weighted SC matrices; fourth order Chebyshev filter; frequency response tuning; low voltage filter; wideband CDMA receiver; Active filters; Bandwidth; Baseband; Chebyshev approximation; Dynamic range; Frequency; Low pass filters; Low voltage; Multiaccess communication; Prototypes;
Conference_Titel :
Electronics, Circuits and Systems, 1999. Proceedings of ICECS '99. The 6th IEEE International Conference on
Conference_Location :
Pafos
Print_ISBN :
0-7803-5682-9
DOI :
10.1109/ICECS.1999.812329
