Dual-band high-linearity variable-gain low-noise amplifiers for wireless applications

Author

Ken Leong Fong

Author_Institution

Philips Semicond., Sunnyvale, CA, USA

fYear

1999

fDate

17-17 Feb. 1999

Firstpage

224

Lastpage

225

Abstract

A typical dual-band RF receiver front-end architecture is shown. The low-noise amplifiers (LNA) should have low noise figures to increase sensitivity of the receivers, and high linearity to prevent interference from undesired adjacent-channel signals. To increase the dynamic range of the receivers and to reduce linearity required of the downconversion mixers, the LNAs are required to provide variable gain. When the RF input power is large, the gain of the LNA should be reduced.

Keywords

automatic gain control; integrated circuit noise; mobile radio; radio receivers; radiofrequency amplifiers; RF input power; downconversion mixers; dual-band RF receiver; dual-band variable-gain amplifiers; dynamic range; linearity; low-noise amplifiers; noise figures; receiver front-end architecture; sensitivity; undesired adjacent-channel signals; variable gain; wireless applications; Circuit noise; Degradation; Dual band; Impedance; Low-noise amplifiers; Noise figure; Radio frequency; Resistors; Signal to noise ratio; Transconductance;

fLanguage

English

Publisher

ieee

Conference_Titel

Solid-State Circuits Conference, 1999. Digest of Technical Papers. ISSCC. 1999 IEEE International

Conference_Location

San Francisco, CA

ISSN

0193-6530

Print_ISBN

0-7803-5126-6

Type

conf

DOI

10.1109/ISSCC.1999.759203

Filename

759203