A new configuration of CMOS two-stage wide-band amplifier

Author

Filanovsky, I.M. ; Reja, Md Mahbub ; Allam, Ahmed

Author_Institution

Alberta Univ., Edmonton, Alta., Canada

Volume

3

fYear

2004

fDate

25-28 July 2004

Abstract

A new configuration of a two-stage wide-band amplifier is described. The proposed circuit is obtained by modifying the dual feedback loop two-stage Meyer-Blauschild topology. One global feedback is reduced to the local feedback in the input stage, and the followers are introduced in both feedback loops. These modifications simplify biasing, and make the amplifier input and output impedance and gain weakly dependent on dc operating point. Designed for 0.18 μm CMOS process the amplifier achieves 14.8 dB gain, 2.6 GHz -3 dB bandwidth, and 3.8 dB noise figure with input and output impedance matched to 50 Ω. The circuit consumes 30 mW of dc power and occupies the layout area of 0.55×0.55 mm².

Keywords

CMOS integrated circuits; feedback amplifiers; impedance matching; integrated circuit design; network topology; operational amplifiers; wideband amplifiers; 0.18 micron; 14.8 dB; 2.6 GHz; 3.8 dB; 30 mW; CMOS process; CMOS two stage wideband amplifier; dc operating point; dual feedback loop; followers; global feedback; impedance matching; local feedback; two stage Meyer-Blauschild topology; Broadband amplifiers; CMOS process; Circuit simulation; Circuit topology; Feedback circuits; Feedback loop; Impedance; Optical amplifiers; Radio frequency; Radiofrequency amplifiers;

fLanguage

English

Publisher

ieee

Conference_Titel

Circuits and Systems, 2004. MWSCAS '04. The 2004 47th Midwest Symposium on

Print_ISBN

0-7803-8346-X

Type

conf

DOI

10.1109/MWSCAS.2004.1354279

Filename

1354279