Title :
A multi-mode continuously-tunable lowpass filter for zero-IF mobile applications
Author :
Chamla, David ; Kaiser, Andreas ; Cathelin, Andreia ; Belot, Didier
Author_Institution :
IEMN/ISEN, Lille, France
Abstract :
This paper presents a tunable 50 kHz-2 MHz 3rd-order lowpass Butterworth Gm-C filter for use in a baseband module of a zero-IF cellular multistandard receiver, including GSM/DCS/PCS and W-CDMA, designed and fabricated in a 0.25 μm, 2.5 V SiGe BiCMOS process. Measurements exhibit good inband linearity (up to +18 dBVp), large tuning range (>30:1), moderate noise and power consumption (1 mW to 4 mW per channel) for a silicon area of only 0.5 mm2 (I&Q channels).
Keywords :
BiCMOS analogue integrated circuits; Butterworth filters; UHF filters; cellular radio; circuit tuning; code division multiple access; ladder filters; low-pass filters; radio receivers; 0.25 micron; 1 to 4 mW; 2.5 V; 50 kHz to 2 MHz; BiCMOS; DCS; GSM; PCS; SiGe; W-CDMA; baseband module; cellular multistandard receiver; continuously-tunable filter; inband linearity; ladder LC filter; lowpass filter; multimode filter; third-order Butterworth Gm-C filter; tuning range; zero-IF mobile receiver; Area measurement; Baseband; BiCMOS integrated circuits; Distributed control; Filters; GSM; Germanium silicon alloys; Multiaccess communication; Personal communication networks; Silicon germanium;
Conference_Titel :
Solid-State Circuits Conference, 2004. ESSCIRC 2004. Proceeding of the 30th European
Print_ISBN :
0-7803-8480-6
DOI :
10.1109/ESSCIR.2004.1356626
