DocumentCode :
1333934
Title :
Design of a new bandpass filter with sharp transition band using multilayer-technique and U-defected ground structure
Author :
Boutejdar, A. ; Batmanov, A. ; Awida, M.H. ; Burte, E.P. ; Omar, Ankur
Author_Institution :
Dept. of Microwave & Commun. Eng., Univ. of Magdeburg, Magdeburg, Germany
Volume :
4
Issue :
9
fYear :
2010
fDate :
9/1/2010 12:00:00 AM
Firstpage :
1415
Lastpage :
1420
Abstract :
A novel compact microstrip bandpass filter with sharp rejection bands is proposed. The proposed filter structure is composed of U-shape microstrip resonators, ´U-strip´, backed by similarly shaped U-slots ´U-defected ground structure´ (U-DGS). By controlling the electrical coupling between the U-strip and the U-DGS, the bandpass filter´s stopband is optimised for better rejection. The proposed filter has low insertionloss and compact size because of the slow-wave effect. Meanwhile, sharp rejection bands induced by the presence of two transmission zeros on both sides of its passband are achieved. The measured centre frequency, bandwidth and passband insertion loss are 3.6 GHz, 40 and 0.5 dB, respectively. The simulated and measured results show good agreement and validate the proposed approach.
Keywords :
band-pass filters; microstrip resonators; microwave filters; U-defected ground structure; U-shape microstrip resonators; U-strip; compact microstrip bandpass filter; electrical coupling; frequency 3.6 GHz; insertion loss; loss 0.5 dB; multilayer-technique; sharp rejection bands; sharp transition band;
fLanguage :
English
Journal_Title :
Microwaves, Antennas & Propagation, IET
Publisher :
iet
ISSN :
1751-8725
Type :
jour
DOI :
10.1049/iet-map.2009.0357
Filename :
5585268
Link To Document :
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