Title :
A programmable active-RC complex filter for wireless communications
Author :
De Matteis, M. ; Vergine, T. ; Cocciolo, G. ; Baschirotto, A. ; Conta, M.
Author_Institution :
Dept. of Innovation Eng., Univ. of Salento, Lecce, Italy
Abstract :
A programmable active-RC complex filter synthesized from Tow-Thomas low-pass prototype is proposed in this paper. The filter features tunable intermediate frequency (fIF), and can be programmed by the external. In addition a tunable damping structure allows to guarantee a minimum image rejection for any value of the tunable range. The filter is implemented in a 0.18 ¿m CMOS technology, consumes 0.36 mW and its response ranges from 40 kHz to 100 kHz (5 kHz per step), the minimum image rejection is 62 dB. The maximum in-band integrated output noise is 132 ¿Vrms, while an in-band IM3 of 20 dBc is obtained with vin=140 mVrms.
Keywords :
CMOS integrated circuits; active filters; low-pass filters; programmable filters; radio networks; CMOS technology; Tow-Thomas low-pass prototype; frequency 40 kHz to 100 kHz; power 0.36 mW; programmable active-RC complex filter; size 0.18 mum; tunable intermediate frequency; wireless communications; 1f noise; Band pass filters; CMOS technology; Circuit synthesis; Frequency response; Frequency synthesizers; Low pass filters; Q factor; Tunable circuits and devices; Wireless communication;
Conference_Titel :
Electronics, Circuits, and Systems, 2009. ICECS 2009. 16th IEEE International Conference on
Conference_Location :
Yasmine Hammamet
Print_ISBN :
978-1-4244-5090-9
Electronic_ISBN :
978-1-4244-5091-6
DOI :
10.1109/ICECS.2009.5410971
