A 2 GHz variable gain low noise amplifier in 0.18-/spl mu/m CMOS

Author

Alam, Shaikh K. ; DeGroat, Joanne

Author_Institution

Dept. of Electr. & Comput. Eng., Ohio State Univ., Columbus, OH

fYear

2005

fDate

7-10 Aug. 2005

Firstpage

623

Abstract

This paper describes a 2 GHz active variable gain low noise amplifier (VGLNA) in a 0.18-mum CMOS process. The VGLNA provides a 50 Omega input impedance and utilizes a tuned load to provide high selectivity. The VGLNA achieves a maximum small signal gain of 16.8 dB and a minimum gain of 4.6 dB with good input return loss. In the high gain and the low gain modes, the NFs are 0.83 dB and 2.8 dB, respectively. The VGLNA´s IIP3 in the high gain mode is 2.1 dBm. The LNA consumes approximately 4 mA of current from a 1.8-V power supply

Keywords

CMOS analogue integrated circuits; UHF amplifiers; differential amplifiers; integrated circuit design; low noise amplifiers; 0.18 micron; 0.83 dB; 1.8 V; 11 dB; 17 dB; 2 GHz; 2.8 dB; 4.6 to 16.8 dB; 50 ohm; CMOS radiofrequency integrated circuit; UHF amplifier; active amplifier; differential amplifier; low noise amplifier; variable gain amplifier; BiCMOS integrated circuits; CMOS process; CMOS technology; Frequency; Gain; Impedance; Low-noise amplifiers; Noise figure; Radiofrequency integrated circuits; Resonance;

fLanguage

English

Publisher

ieee

Conference_Titel

Circuits and Systems, 2005. 48th Midwest Symposium on

Conference_Location

Covington, KY

Print_ISBN

0-7803-9197-7

Type

conf

DOI

10.1109/MWSCAS.2005.1594178

Filename

1594178