A filter synthesis technique applied to the design of multistage broadband microwave amplifiers

Author

Rooney, J.-P. ; Parry, R. ; Hunter, I. ; Pollard, R.D.

Author_Institution

Inst. of Microwaves & Photonics, Leeds Univ., UK

Volume

3

fYear

2002

fDate

2-7 June 2002

Firstpage

1915

Abstract

A synthesis method for designing multistage broadband amplifiers based upon well known filter synthesis techniques is presented. Common low-pass approximations are used to synthesize the amplifier circuit. A proof of concept Butterworth low-pass two-stage amplifier was designed, simulated and measured, and achieved a flat gain performance of 1-4 GHz with a gain of 15 /spl plusmn/ 1 dB as predicted. A comparison is made with the distributed amplifier (DA) and the cascaded single stage distributed amplifier (CSSDA). Theoretically a larger gain bandwidth product is achieved using the synthesis technique.

Keywords

Butterworth filters; Chebyshev filters; MESFET circuits; low-pass filters; microwave amplifiers; network synthesis; wideband amplifiers; 1 to 4 GHz; 15 dB; Butterworth low-pass two-stage amplifier; GaAs; GaAs MESFET; NE71083; broadband microwave amplifiers; filter synthesis technique; flat gain performance; low-pass approximations; multistage broadband amplifiers; Bandwidth; Broadband amplifiers; Circuit simulation; Circuit synthesis; Design methodology; Distributed amplifiers; Filters; Gain measurement; Performance gain; Predictive models;

fLanguage

English

Publisher

ieee

Conference_Titel

Microwave Symposium Digest, 2002 IEEE MTT-S International

Conference_Location

Seattle, WA, USA

ISSN

0149-645X

Print_ISBN

0-7803-7239-5

Type

conf

DOI

10.1109/MWSYM.2002.1012238

Filename

1012238