IIP2 requirements in 4G LTE handset receivers

Author

Atalla, Essam S. ; Bellaouar, Abdellatif ; Balsara, Poras T.

Author_Institution

Dept. of Electr. Eng., Univ. of Texas at Dallas, Richardson, TX, USA

fYear

2013

fDate

4-7 Aug. 2013

Firstpage

1132

Lastpage

1135

Abstract

SAW-less receivers have become the state-of-the-art architecture in multiband receivers. These receivers eliminate the SAW filter between the low-noise amplifier (LNA) and the direct-conversion mixer. Large TX leakage signals hit the mixer in full-duplex receivers which imposes challenging mixer linearity requirements. Second order intercept point (IIP₂) was intensively studied in 3G receivers. In this paper, we derive the IIP₂ specification for LTE receivers and report the simulated and measured correction factors needed to estimate the modulated carrier 2^nd order distortion using the conventional 2-tone carrier test.

Keywords

4G mobile communication; Long Term Evolution; distortion; low noise amplifiers; mixers (circuits); radio receivers; surface acoustic wave filters; 2-tone carrier test; 3G receivers; 4G LTE handset receivers; IIP2 requirements; IIP2 specification; LNA; SAW filter; SAW-less receivers; TX leakage signals; correction factors; direct-conversion mixer; full-duplex receivers; low-noise amplifier; mixer linearity requirements; modulated carrier 2nd order distortion; multiband receivers; second order intercept point; 3G; 4G; FDD; IIP2; IM2; LTE; SAW-less; SCFDMA; TX; WCDMA; correction factor; direct conversion; linearity; mixer; receivers; sensitivity;

fLanguage

English

Publisher

ieee

Conference_Titel

Circuits and Systems (MWSCAS), 2013 IEEE 56th International Midwest Symposium on

Conference_Location

Columbus, OH

ISSN

1548-3746

Type

conf

DOI

10.1109/MWSCAS.2013.6674852

Filename

6674852