Title :
A tunable active filter in CMOS for RF applications
Author :
Cetinkaya, Hakan ; Tarim, Nil
Author_Institution :
Electron. & Commun. Eng. Dept., Istanbul Tech. Univ., Istanbul
fDate :
Aug. 31 2008-Sept. 3 2008
Abstract :
An active radio frequency (RF) filter based on floating active inductor circuits is presented in this work. For demonstration purposes, a third-order Chebyshev lowpass filter with an LC ladder structure has been designed for GSM applications. The filter has a cutoff frequency of 900 MHz and 0.4 dB ripple, and is tunable between 890 MHz and 960 MHz, consumes 10.5 mW power, and occupies an area of 96 mumtimes135 mum when laid out using the UMC 0.13 mum CMOS process which provides an area reduction of 80% compared to its passive filter counterpart.
Keywords :
CMOS integrated circuits; active filters; radiofrequency filters; CMOS process; LC ladder structure; floating active inductor circuits; frequency 890 MHz to 960 MHz; radio frequency filter; third-order Chebyshev low pass filter; tunable active filter; Active filters; Active inductors; CMOS process; Chebyshev approximation; Cutoff frequency; Inductance; Passive filters; Q factor; Radio frequency; Tunable circuits and devices;
Conference_Titel :
Electronics, Circuits and Systems, 2008. ICECS 2008. 15th IEEE International Conference on
Conference_Location :
St. Julien´s
Print_ISBN :
978-1-4244-2181-7
Electronic_ISBN :
978-1-4244-2182-4
DOI :
10.1109/ICECS.2008.4674806
