An input-impedance-based circuit model for coplanar waveguide-to-slotline T-junction

Author

Wang, Chi-Hsueh ; Lin, Yo-Shen ; Tsai, Mun-Chuan ; Chang, Chun-Huai ; Chen, Chun Hsiung

Author_Institution

Dept. of Electr. Eng., Nat. Taiwan Univ., Taipei, Taiwan

Volume

52

Issue

6

fYear

2004

fDate

6/1/2004 12:00:00 AM

Firstpage

1585

Lastpage

1591

Abstract

In this paper, an analytical input impedance formula is presented to characterize the coplanar waveguide (CPW)-to-slotline T-junction. Based on this impedance formula, one may establish a new circuit model for the T-junction, which may describe both the discontinuity effect and the mode conversion effect between even and odd CPW modes. This circuit model is validated by measurement and is then applied to design the back-to-back CPW-to-slotline and CPW-to-coplanar stripline transition structures.

Keywords

coplanar transmission lines; coplanar waveguides; electric impedance; slot lines; strip line discontinuities; strip line transitions; strip lines; waveguide junctions; waveguide theory; analytical input impedance formula; circuit model; coplanar stripline transition structures; coplanar waveguide to slotline T junction; discontinuity effect; input impedance based circuit model; mode conversion effect; Circuit simulation; Computational modeling; Coplanar waveguides; Equivalent circuits; Impedance; Microwave circuits; Probes; Slotline; Stripline; Strips; CPW; Coplanar stripline; T-junction; coplanar waveguide; equivalent circuit; slotline;

fLanguage

English

Journal_Title

Microwave Theory and Techniques, IEEE Transactions on

Publisher

ieee

ISSN

0018-9480

Type

jour

DOI

10.1109/TMTT.2004.828446

Filename

1302361