CAD models for asymmetrical, elliptical, cylindrical, and elliptical cone coplanar strip lines

Author

Du, Zhengwei ; Gong, Ke ; Fu, Doran D. ; Feng, Zhenghe ; Gao, Baoxin

Author_Institution

Dept. of Electron. Eng., Tsinghua Univ., Beijing, China

Volume

48

Issue

2

fYear

2000

fDate

2/1/2000 12:00:00 AM

Firstpage

312

Lastpage

316

Abstract

By the conformal mapping method, we give analytical closed form expressions for the quasi-TEM parameters for asymmetrical coplanar strip lines (ACPSs) with finite boundary substrate. Then, based on the analysis of ACPSs, elliptical coplanar strip lines (ECPSs) and cylindrical coplanar strip lines (CCPSs), and elliptical cone coplanar strip lines (ECCPSs) are studied. Computer-aided-design oriented analytical closed-form expressions for the quasi-TEM parameters for ACPSs, ECPSs, CCPSs, and ECCPSs are obtained. All of the expressions are simple and accurate for microwave circuit designs and are useful for transmission-line theory and antenna theory. The reasonableness of the method and results are verified and various design curves are given

Keywords

CAD; coplanar transmission lines; electrical engineering computing; microwave circuits; strip line circuits; strip lines; transmission line theory; CAD models; analytical closed form expressions; antenna theory; asymmetrical type; computer-aided-design; conformal mapping method; coplanar strip lines; cylindrical type; elliptical cone type; elliptical type; finite boundary substrate; microwave circuit design; quasi-TEM parameters; transmission-line theory; Closed-form solution; Conformal mapping; Coplanar transmission lines; Dielectric substrates; Frequency; Microwave antennas; Microwave circuits; Microwave theory and techniques; Strips; Transmission lines;

fLanguage

English

Journal_Title

Microwave Theory and Techniques, IEEE Transactions on

Publisher

ieee

ISSN

0018-9480

Type

jour

DOI

10.1109/22.821784

Filename

821784