Title :
An elliptic filter based on MLF LF structure for wireless receiver
Author :
Xi Zhu ; Yichuang Sun
Author_Institution :
Dept. of Electron., Macquarie Univ., Sydney, NSW, Australia
Abstract :
A CMOS fifth-order Gm-C elliptic lowpass filter based on the voltage-mode multiple loop feedback (MLF) leap-frog (LF) configuration is designed. The filter is implemented using a fully-differential linear operational transconductance amplifier (OTA). PSpice simulations using a standard TSMC 0.18μm CMOS process with 1.8V power supply have shown that the cut-off frequency of the proposed filter can be tuned from 28MHz to 44MHz, dynamic range is about 67dB, and power consumption is about 67mW at 30MHz. Moreover, 0.7dB passband ripple and 65dB stopband attenuation are achieved for the designed filter.
Keywords :
CMOS integrated circuits; HF amplifiers; VHF amplifiers; VHF circuits; VHF filters; circuit feedback; circuit simulation; circuit tuning; differential amplifiers; elliptic filters; integrated circuit design; low-pass filters; operational amplifiers; radio receivers; radiofrequency integrated circuits; CMOS fifth-order Gm-C elliptic lowpass filter; MLF LF structure; OTA; PSpice simulation; frequency 28 MHz to 44 MHz; fully-differential linear operational transconductance amplifier; gain 0.7 dB; gain 65 dB; size 0.18 mum; standard TSMC CMOS process; voltage 1.8 V; voltage-mode multiple loop feedback leap-frog configuration; wireless receiver;
Conference_Titel :
Circuits and Systems (MWSCAS), 2013 IEEE 56th International Midwest Symposium on
Conference_Location :
Columbus, OH
DOI :
10.1109/MWSCAS.2013.6674621
