Title :
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
fDate :
2/1/2000 12:00:00 AM
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;
Journal_Title :
Microwave Theory and Techniques, IEEE Transactions on
