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

fYear

2009

fDate

13-16 Dec. 2009

Firstpage

187

Lastpage

190

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 (f_IF), 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 Â¿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 Â¿V_rms, while an in-band IM3 of 20 dBc is obtained with v_in=140 mV_rms.

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;

fLanguage

English

Publisher

ieee

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

Type

conf

DOI

10.1109/ICECS.2009.5410971

Filename

5410971