Design of compact extended-stopband microstrip low-pass filters by employing new mutual- coupling technique for defected ground structures (DGSs)

Author

Boutejdar, A. ; Makkey, M. ; Elsherbini, A. ; Luxor, O. ; Omar, A.

Author_Institution

Univ. of Magdeburg, Magdeburg

fYear

2007

fDate

9-12 Oct. 2007

Firstpage

71

Lastpage

74

Abstract

A new technique for reducing the size, and improving the rejection in the stopband of a low-pass filters using modified DGSs is proposed . An equivalent circuit model is used to investigate the DGS characteristics. It will be demonstrated that the filter can provide a sharp transition and a wide rejection in the stop-band. To further verify the new technique, a filter using the deformed DGSs has been fabricated and measured. The agreement between the simulated and measured results confirms the effectiveness of the proposed concepts.

Keywords

equivalent circuits; low-pass filters; microstrip filters; compact filters; defected ground structures; equivalent circuit; extended-stopband filters; low-pass filters; microstrip filters; mutual coupling; Band pass filters; Design engineering; Joining processes; Low pass filters; Microstrip filters; Microwave theory and techniques; Mutual coupling; Periodic structures; RLC circuits; Resonator filters; Defected ground Structure; Deformed-Microstrip resonator; low-pass filter; reject band; sharp transition response;

fLanguage

English

Publisher

ieee

Conference_Titel

Microwave Conference, 2007. European

Conference_Location

Munich

Print_ISBN

978-2-87487-001-9

Type

conf

DOI

10.1109/EUMC.2007.4405128

Filename

4405128