Design principles for modeling and simulations of microwave circuits

Author

Grama, Alin ; Hurgoi, Florin ; Chindris, Gabriel ; Pop, Ovidiu

Author_Institution

Dept. Appl. Electron., Tech. Univ. Cluj-Napoca, Romania

fYear

2001

fDate

2001

Firstpage

102

Lastpage

106

Abstract

It has often proven difficult to simulate microwave and RF circuits accurately. This paper presents an easy method for modeling and simulation of nonlinear active microwave circuits using the Ansoft Serenade 8.0 Design Environment. Starting with some simple circuits (MESFET mixer circuits, GaAs BJT feedback microwave amplifier), the authors describe the main principles of simulating RF and microwave circuits and a new method for modeling active RF devices (such as MESFETs and GaAs BJTs) in order to obtain the best results for multitone nonlinear analysis. The new proposed method also covers the stability problems, based on the Nyquist stability criteria, and the matching impedance Smith plots of the RF circuits

Keywords

MESFET circuits; Nyquist criterion; Nyquist stability; bipolar transistor circuits; circuit CAD; circuit simulation; feedback amplifiers; impedance matching; microwave amplifiers; microwave circuits; microwave mixers; nonlinear network analysis; Ansoft Serenade 8.0 Design Environment; GaAs; GaAs BJT feedback microwave amplifier; GaAs BJTs; MESFET mixer circuits; MESFETs; Nyquist stability criteria; RF circuit matching impedance Smith plots; RF circuits; active RF devices; design principles; microwave circuits; modeling; multitone nonlinear analysis; nonlinear active microwave circuits; simulation; stability problems; Circuit simulation; Feedback circuits; Gallium arsenide; MESFET circuits; Microwave amplifiers; Microwave circuits; Microwave devices; Microwave theory and techniques; Radio frequency; Stability criteria;

fLanguage

English

Publisher

ieee

Conference_Titel

Electronics Technology: Concurrent Engineering in Electronic Packaging, 2001. 24th International Spring Seminar on

Conference_Location

Calimanesti-Caciulata

Print_ISBN

0-7803-7111-9

Type

conf

DOI

10.1109/ISSE.2001.931023

Filename

931023