The Studies on Coupling Characteristics of Novel Defected Ground Structures

Author

Zhang, Sheng ; Liu, Fa-lin

Author_Institution

Dept. of Electron. Eng. & Inf. Sci., Univ. of Sci. & Technol. of China, Hefei

fYear

2008

fDate

10-12 Sept. 2008

Firstpage

125

Lastpage

128

Abstract

Three types of novel DGSs are proposed firstly in this paper. The electric and magnetic coupling structures for three types of DGS are studied respectively. The S-parameters show that different coupling structures can cause different frequency responses, especially the stopband characteristics and the position of transmission poles. At the same time, the similar coupling structures have similar frequency responses for three types of DGSs. In order to explore the usefulness of the coupled-DGSs, two kinds of low-pass filters (LPFs) are designed. Both filters using coupled-DGSs have compact dimensions, wide passbands and excellent attenuation characteristics in the wide stopband.

Keywords

S-parameters; band-pass filters; electromagnetic coupling; frequency response; low-pass filters; transmission lines; DGS; S-parameters; coupling characteristics; defected ground structure; electric coupling; frequency responses; low-pass filters; stopband characteristics; transmission poles; Attenuation; Capacitance; Couplings; Etching; Inductance; Low pass filters; Magnetic separation; Microstrip; Microwave filters; Resonant frequency;

fLanguage

English

Publisher

ieee

Conference_Titel

Microwave Conference, 2008 China-Japan Joint

Conference_Location

Shanghai

Print_ISBN

978-1-4244-3821-1

Type

conf

DOI

10.1109/CJMW.2008.4772389

Filename

4772389