Title :
A low-power high-linearity CMOS baseband filter for wideband CDMA applications
Author :
Shi, Chunlei ; Wu, Yue ; Elwan, Hassan 0. ; Ismail, Mohammed
Author_Institution :
Dept. of Electr. Eng., Ohio State Univ., Columbus, OH, USA
Abstract :
In this paper, the design and performance of a CMOS fifth-order low-pass anti-aliasing filter for baseband mobile communication are presented. Based on a differential difference amplifier (DDA), a novel fully-differential Sallen-Key filter is realized. This fifth-order filter operates at a supply voltage of 3 V and has a cutoff frequency of 19 MHz. It provides up to 1 V differential output with 0.03% total harmonic distortion (THD) and dissipates only 4.5 mW. The input IP3 is +39 dBm, and the input-referred noise in the passband is 60 nV/√(Hz)
Keywords :
CMOS analogue integrated circuits; active filters; code division multiple access; low-pass filters; low-power electronics; mobile radio; radiofrequency filters; 1 V; 19 MHz; 3 V; 4.5 mW; CMOS baseband filter; THD; WCDMA; anti-aliasing filter; baseband mobile communication; differential difference amplifier; fifth-order low-pass filter; fully-differential Sallen-Key filter; high-linearity CMOS filter; low-power CMOS filter; total harmonic distortion; wideband CDMA applications; Baseband; Broadband amplifiers; Cutoff frequency; Differential amplifiers; Low pass filters; Mobile communication; Multiaccess communication; Total harmonic distortion; Voltage; Wideband;
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.2000.856281
