L-shaped defected ground structure for coplanar waveguide

Author

Hamad, Ehab K I ; Safwat, Amr M E ; Omar, Abbas S.

Author_Institution

Otto-von-Guericke Univ. of Magdeburg, Germany

fYear

2005

fDate

3-8 July 2005

Firstpage

663

Abstract

An L-shaped defected ground structure (DGS) for a coplanar waveguide (CPW) is proposed. The L-section can be repeated in series at one side or at both sides to prolong the current path and thus to increase the effective inductance and capacitance of the structure. The equivalent capacitance and inductance of the proposed structure vary linearly relative to the number of added L-sections. The center frequency varies from 8.38 GHz for single-sided one L-section (SS1S) down to 4.21 GHz for double-sided four L-sections (DS4S) with more thin 23 dB rejection in the stopband. Measured, EM simulated, and circuit simulated performances are in a very good agreement.

Keywords

capacitance; coplanar waveguides; current distribution; inductance; periodic structures; photonic band gap; 8.38 to 4.21 GHz; EBG structures; L-shaped defected ground structure; coplanar waveguide; current path; effective capacitance; effective inductance; electromagnetic band gap structures; equivalent capacitance; equivalent inductance; periodic dielectric structures; stopband rejection; surface current distribution; Capacitance; Circuit simulation; Coplanar waveguides; Electromagnetic propagation; Electromagnetic waveguides; Frequency; Inductance; Microstrip; Optical waveguides; Periodic structures;

fLanguage

English

Publisher

ieee

Conference_Titel

Antennas and Propagation Society International Symposium, 2005 IEEE

Print_ISBN

0-7803-8883-6

Type

conf

DOI

10.1109/APS.2005.1552100

Filename

1552100