DocumentCode
1497841
Title
Dual-band bandpass filter based on dual-plane microstrip/interdigital DGS slot structure
Author
Ren, Ling ; Huang, Heng
Author_Institution
Sch. of Electron. Eng., Univ. of Electron. & Technol. of China (UESTC), Chengdu, China
Volume
45
Issue
21
fYear
2009
Firstpage
1077
Lastpage
1079
Abstract
A novel dual-band bandpass filter based on a dual-plane structure consisting of both a microstrip and a defected ground structure (DGS) slot with an interdigital shape is proposed. The microstrip structure is connected to the ground plane by grounding vias to obtain tight coupling. By tuning the length of the fingers in the DGS, it is convenient to change the first passband operating frequency. The equivalent-circuit model is derived for the filter. A filter with two passbands centring at 2.44 and 3.28 GHz is shown with stopband attenuation of greater than 30 dB over the frequency range 3.7- 9 GHz.
Keywords
band-pass filters; equivalent circuits; microstrip filters; microwave filters; bandpass filter; defected ground structure; dual-band filter; dual-plane microstrip; equivalent circuit model; frequency 3.7 GHz to 9 GHz; grounding vias; interdigital shape; microstrip structure; stopband attenuation;
fLanguage
English
Journal_Title
Electronics Letters
Publisher
iet
ISSN
0013-5194
Type
jour
DOI
10.1049/el.2009.1851
Filename
5284459
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