A rail-to-rail input receiver employing successive regeneration and adaptive cancellation of intermodulation products

Author

Keehr, Edward A. ; Hajimiri, Ali

Author_Institution

California Inst. of Technol., Pasadena, CA, USA

fYear

2010

fDate

23-25 May 2010

Firstpage

47

Lastpage

50

Abstract

A direct conversion receiver is demonstrated which operates in the presence of a rail-to-rail (+12.4dBm) out-of-band blocker and a -16.3dBm blocker, where the ICP1 is +12.5dBm and the uncorrected extrapolated IIP3 is +33.5dBm. IM distortion is adaptively cancelled via feedforward loops which are digitally expanded to reproduce higher order nonlinear reference terms. Cancellation improves input-referred total IM distortion by over 24dB, resulting in an extrapolated IIP3 of +45.3dBm.

Keywords

CMOS integrated circuits; interference suppression; intermodulation; linearisation techniques; mixed analogue-digital integrated circuits; radio receivers; radiofrequency integrated circuits; IM distortion; RF CMOS technology; RF receiver; adaptive cancellation; direct conversion receiver; extrapolated IIP3; feedforward loop; intermodulation product; mixed signal linearization; nonlinear circuit; out-of-band blocker; rail-to-rail input receiver; size 90 nm; successive regeneration; Adaptive equalizers; Adaptive filters; Baseband; Digital modulation; Nonlinear circuits; Nonlinear distortion; Radio frequency; Rail to rail inputs; Receivers; Signal generators; Adaptive equalization; RF receivers; feedforward cancellation; mixed-signal linearization; nonlinear circuits; wireless communications;

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.2010.5477407

Filename

5477407