Equivalent Circuit Model for a Simple Slot-Shaped DGS Microstrip Line

Author

Duk-Jae Woo ; Taek-Kyung Lee ; Lee, Jae W.

Author_Institution

Dept. of Electr. Eng. & Comput. Sci./Electr. Eng., Seoul Nat. Univ., Seoul, South Korea

Volume

23

Issue

9

fYear

2013

fDate

Sept. 2013

Firstpage

447

Lastpage

449

Abstract

In this letter, an analytic expression is derived for the resonance frequency of a simple slot-shaped DGS. In equivalent circuit modeling, the capacitance and inductance of the resonance circuit are evaluated from the dimensions of the DGS structure. The effects of equivalent circuit elements of a one-turn spiral DGS in the ground plane and their magnetic coupling to the host transmission line are modeled as a simple lumped-element circuit. The resonance frequencies calculated from the proposed method are compared with those obtained by EM simulation.

Keywords

defected ground structures; equivalent circuits; microstrip lines; DGS structure; EM simulation; equivalent circuit element; equivalent circuit modeling; ground plane; host transmission line; lumped-element circuit; magnetic coupling; one-turn spiral DGS; resonance circuit capacitance; resonance circuit inductance; resonance frequency; simple-slot-shaped DGS microstrip line; Equivalent circuits; Inductance; Integrated circuit modeling; Mathematical model; Microstrip; RLC circuits; Resonant frequency; Equivalent circuit model; magnetic coupling; resonance frequency; slot-shaped DGS;

fLanguage

English

Journal_Title

Microwave and Wireless Components Letters, IEEE

Publisher

ieee

ISSN

1531-1309

Type

jour

DOI

10.1109/LMWC.2013.2274037

Filename

6576248