A differential 4-path highly linear widely tunable on-chip band-pass filter

Author

Ghaffari, Amir ; Klumperink, Eric A M ; Nauta, Bram

Author_Institution

IC Design Group, Univ. of Twente, Enschede, Netherlands

fYear

2010

fDate

23-25 May 2010

Firstpage

299

Lastpage

302

Abstract

A passive switched capacitor RF band-pass filter with clock controlled center frequency is realized in 65nm CMOS. An off-chip transformer which acts as a balun, improves filter-Q and realizes impedance matching. The differential architecture reduces clock-leakage and suppresses selectivity around even harmonics of the clock. The filter has a constant -3dB bandwidth of 35MHz and can be tuned from 100MHz up to 1GHz. IIP3 is better than 19dBm, P_1dB=2dBm and NF<;5.5dB at P_diss=2mW to 16mW.

Keywords

CMOS integrated circuits; baluns; band-pass filters; clocks; harmonics; impedance matching; radiofrequency filters; switched capacitor filters; transformers; CMOS; balun; bandwidth 35 MHz; clock controlled center frequency; clock-leakage; differential 4-path highly linear widely tunable on-chip band-pass filter; differential architecture; filter-Q; harmonics; impedance matching; off-chip transformer; passive switched capacitor RF band-pass filter; power 2 mW to 16 mW; Band pass filters; Capacitors; Clocks; Impedance matching; Power harmonic filters; Radio frequency; Radiofrequency integrated circuits; Resistors; Switches; Tunable circuits and devices; CMOS bandpass filter; N-path filters; cognitive radio; commutated capacitor; inductorless; software-defined radio;

fLanguage

English

Publisher

ieee

Conference_Titel

Radio Frequency Integrated Circuits Symposium (RFIC), 2010 IEEE

Conference_Location

Anaheim, CA

ISSN

1529-2517

Print_ISBN

978-1-4244-6240-7

Type

conf

DOI

10.1109/RFIC.2010.5477314

Filename

5477314