A design of the novel coupled line bandpass filter using defected ground structure

Author

Jun-Sik Yun ; Geun-Young Kim ; Jun-Seok Park ; Dal Ahn ; Kwang-Yong Kang ; Jae-Bong Lim

Author_Institution

Sch. of Electr. & Electron. Eng., Soonchunhyang Univ., South Korea

Volume

1

fYear

2000

fDate

11-16 June 2000

Firstpage

327

Abstract

In this paper, a novel coupled line bandpass filter with a DGS (Defected Ground Structure) is proposed to realize a compact size with low insertion loss characteristic. The proposed bandpass filter can provide an attenuation pole due to the resonance characteristic of the DGS. The equivalent circuit parameters for the DGS are extracted by using an EM simulation process and the circuit analysis method. The design method for the proposed 3-pole bandpass filter is derived based on coupled line filter theory and the derived equivalent circuit of the DGS. The experimental results show an excellent agreement with theoretical simulation results.

Keywords

band-pass filters; earthing; equivalent circuits; linear network synthesis; losses; microstrip filters; microwave filters; passive filters; resonator filters; 3-pole bandpass filter; 4 GHz; EM simulation process; attenuation pole; circuit analysis method; compact size; coupled line bandpass filter; coupled line filter theory; defected ground structure; design method; equivalent circuit parameters; low insertion loss characteristic; resonance characteristic; Analytical models; Attenuation; Band pass filters; Circuit analysis; Circuit simulation; Coupling circuits; Design methodology; Equivalent circuits; Insertion loss; Resonance;

fLanguage

English

Publisher

ieee

Conference_Titel

Microwave Symposium Digest. 2000 IEEE MTT-S International

Conference_Location

Boston, MA, USA

ISSN

0149-645X

Print_ISBN

0-7803-5687-X

Type

conf

DOI

10.1109/MWSYM.2000.861000

Filename

861000