A wide-band low noise amplifier using cross-coupled technique with linear in dB gain-control

Author

Chang, Chia-Hung ; Lee, Ching-Feng ; Tsou, Yu-Lin

Author_Institution

SOC Technol. Center, Ind. Technol. Res. Inst., Hsinchu, Taiwan

fYear

2009

fDate

9-11 Sept. 2009

Firstpage

251

Lastpage

254

Abstract

This paper realized a broadband LNA with cross-coupled technique to achieve a low noise characteristic. The current steering method and linear-in-dB control technique are employed in the amplifier to provide a wide range and linear-in-dB gain control. The dynamic gain range is about 27 dB with linearity error lower than plusmn0.5 dB. The noise figure of LNA is about 3 dB at the maximum gain of 17 dB. The LNA dissipates 10.8 mA from 3.3 V power supply, which occupies 945 um times 860 um of chip area including bonding pads.

Keywords

circuit noise; interference suppression; low noise amplifiers; wideband amplifiers; bonding pads; broadband LNA; chip area; cross-coupled technique; current 10.8 mA; current steering method; dynamic gain; gain 17 dB; linear-in-dB gain control; linearity error; noise figure; power supply; size 860 mum; size 945 mum; voltage 3.3 V; wide-band low noise amplifier; Bandwidth; Broadband amplifiers; Circuits; Frequency; Gain control; Low-noise amplifiers; Noise figure; Topology; Tuners; Virtual manufacturing; Cross coupled; component; linear in dB; low noise amplifier(LNA); tuner; variable gain control;

fLanguage

English

Publisher

ieee

Conference_Titel

Ultra-Wideband, 2009. ICUWB 2009. IEEE International Conference on

Conference_Location

Vancouver, BC

Print_ISBN

978-1-4244-2930-1

Electronic_ISBN

978-1-4244-2931-8

Type

conf

DOI

10.1109/ICUWB.2009.5288837

Filename

5288837