Design of compact microstrip lowpass filters using coupled half-circle defected ground structures (DGSs)

Author

Boutejdar, A. ; Sherbini, A. ; Ali, W. ; Fouad, S. ; Ahmed, L. ; Omar, A.

Author_Institution

Dept. of Microwave Eng., Univ. of Magdeburg, Magdeburg

fYear

2008

fDate

5-11 July 2008

Firstpage

1

Lastpage

4

Abstract

In this paper we have proposed a new half-circle resonators and investigated different coupling effects in order to realize a compact structure. The use of DGS in form of halfcircle shape improves the stop band characteristics. The new DGS-form allows a compact slot with a double coupling, thus a controlled of the resonance pole. The new filter has been designed, fabricated and measured. Good agreement between simulated and measured results has been achieved.

Keywords

low-pass filters; microstrip filters; resonator filters; compact microstrip lowpass filters; compact slot; coupled half-circle defected ground structures; coupling effects; double coupling; half-circle resonators; resonance pole; stop band characteristics; Circuit simulation; Cutoff frequency; Design engineering; Equivalent circuits; Etching; Impedance; Microstrip filters; Microwave communication; Microwave filters; Passband;

fLanguage

English

Publisher

ieee

Conference_Titel

Antennas and Propagation Society International Symposium, 2008. AP-S 2008. IEEE

Conference_Location

San Diego, CA

Print_ISBN

978-1-4244-2041-4

Electronic_ISBN

978-1-4244-2042-1

Type

conf

DOI

10.1109/APS.2008.4619550

Filename

4619550