DocumentCode
1051239
Title
Microstrip side-coupled ring bandpass filters with mode coupling control for harmonic suppression
Author
Griol, A. ; Mira, D. ; Marti, J. ; Corral, J.L.
Author_Institution
Valencia Nanophotonics Technol. Center, Univ. Politecnica de Valencia, Spain
Volume
40
Issue
15
fYear
2004
fDate
7/22/2004 12:00:00 AM
Firstpage
943
Lastpage
945
Abstract
A technique to suppress higher harmonics in side-coupled ring bandpass filters is proposed and demonstrated. The proposed technique basically consists of optimising the ring shape and the excitation stage of the complete filter structure in order to mitigate the excitation of the resonant modes that generate the second-harmonic filter resonances. A harmonic suppression ratio for the second harmonic greater than 25 dB in a flat bandpass filter centred at 2.5 GHz is experimentally demonstrated.
Keywords
UHF filters; band-pass filters; coupled mode analysis; harmonics suppression; microstrip filters; resonance; 2.5 GHz; 25 dB; coupled ring bandpass filters; flat bandpass filter; harmonic suppression; microstrip bandpass filters; mode coupling control; resonant modes; ring shape optimisation;
fLanguage
English
Journal_Title
Electronics Letters
Publisher
iet
ISSN
0013-5194
Type
jour
DOI
10.1049/el:20045160
Filename
1318883
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