Title :
Digital assistable inverter-based band-pass filter
Author :
Wattanasaovaluk, T. ; Ngarmnil, J. ; Worapishet, A.
Author_Institution :
Dept. of Electron. Eng., Mahanakorn Univ. of Technol., Bangkok, Thailand
Abstract :
This paper proposes a low voltage inverter-based band-pass filter. The circuit is formed in class AB structure using only capacitors and CMOS inverters delivering wide signal swing and low voltage capabilities. With a digital assisting scheme, the center frequency around 900 MHz and 200 MHz bandwidth can be maintained with the power supply variation of 1.40-1.70 Volts. Simulation results of both biquadratic and 4th-order filters on 0.25 μm CMOS processes confirm the functionalities and performances.
Keywords :
CMOS integrated circuits; band-pass filters; biquadratic filters; capacitors; circuit simulation; digital filters; invertors; low-power electronics; 0.25 micron; 1.40 to 1.70 V; 200 MHz; 900 MHz; CMOS inverters; CMOS processes; band-pass filter; biquadratic filter; capacitors; circuit simulation; digital assistable inverter; fourth order filter; low voltage inverter; Band pass filters; CMOS technology; Capacitors; Filtering; Frequency; Inverters; Low voltage; Power supplies; Q factor; Transconductance;
Conference_Titel :
Circuits and Systems, 2004. MWSCAS '04. The 2004 47th Midwest Symposium on
Print_ISBN :
0-7803-8346-X
DOI :
10.1109/MWSCAS.2004.1353892
