Title :
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
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;
Conference_Titel :
Circuits and Systems, 2004. MWSCAS '04. The 2004 47th Midwest Symposium on
Print_ISBN :
0-7803-8346-X
DOI :
10.1109/MWSCAS.2004.1354279
