DocumentCode :
494156
Title :
A compact band-stop/band-pass filter using a narrow gap capacitive as J-inverter and a new octagonal defected ground structure (DGS)
Author :
Boutejdar, A. ; Batmanov, A. ; Omar, A. ; Burte, E.
Author_Institution :
Dept. of Microwave & Commun. Eng., Univ. of Magdeburg, Magdeburg
fYear :
2009
fDate :
23-27 March 2009
Firstpage :
3210
Lastpage :
3213
Abstract :
In this paper, we proposed a new compact DGS band-stop filter with broad passband and low insertion loss in the stop-band. The philosophy of the structure behind this new microstrip band-stop filter is simple as it is composed of a pair of octagonal DGS-slots and an open-stub as compensated microstrip capacitance. The filter will be realized through direct electromagnetic coupling and slow wave effect methods. With this configuration, the BSF with higher compactness, broad passband and sharp transition characteristics was realized. Additionally we present a novel compact band pass filter employing metal-loaded slots etched in the ground plane (DGS) and a simple capacitive gap on the top. With the proposed technique, a simple transformation from LPF to a corresponding BPF was realized. In order to validate the feasibility of the proposed design method, a band-stop filter with 0.9-dB ripple is designed, fabricated, and measured. The experimental results agree well with the simulation results.
Keywords :
band-pass filters; band-stop filters; electromagnetic coupling; invertors; low-pass filters; microstrip filters; J-inverter; band-pass filter; compact band-stop filter; compensated microstrip capacitance; direct electromagnetic coupling; ground plane; low insertion loss; microstrip band-stop filter; narrow gap capacitive; octagonal defected ground structure; open-stub capacitance; slow wave effect methods; Band pass filters; Capacitance; Circuits; Etching; Inductance; Microstrip filters; Microwave filters; Passband; Periodic structures; Resonator filters;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Antennas and Propagation, 2009. EuCAP 2009. 3rd European Conference on
Conference_Location :
Berlin
Print_ISBN :
978-1-4244-4753-4
Electronic_ISBN :
978-3-00-024573-2
Type :
conf
Filename :
5068285
Link To Document :
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