DocumentCode
1766831
Title
Tunable bandpass filter with wide out-of-band rejection
Author
Akra, Mirna ; Pistono, Emmanuel ; Issa, Hamza ; Jrad, Akil ; Ferrari, Philippe
Author_Institution
IMEP-LAHC, Grenoble-Alpes Univ., Grenoble, France
fYear
2014
fDate
6-9 Oct. 2014
Firstpage
953
Lastpage
956
Abstract
This paper presents tunable microstrip bandpass filters. These filters are based on Stub-Loaded Resonators. By properly loading these resonators by variable capacitance (such as varactor diode), the center frequency can be easily controlled. Thanks to the chosen topology, the loading capacitors have no impact in the out-of-band rejection. A complete resonant mode analysis is investigated. The concept is demonstrated by considering a third-order parallel-coupled bandpass filter. A tunable center frequency of +/- 7.6% is obtained.
Keywords
band-pass filters; microstrip filters; resonator filters; loading capacitors; out-of-band rejection; resonant mode analysis; stubloaded resonator; tunable band-pass filter; tunable microstrip filter; Band-pass filters; Capacitance; Loading; Microwave filters; Resonant frequency; Resonator filters; Varactors; Bandpass filters; Stub-Loaded Resonators; out-of-band rejection; tunable filter;
fLanguage
English
Publisher
ieee
Conference_Titel
Microwave Conference (EuMC), 2014 44th European
Conference_Location
Rome
Type
conf
DOI
10.1109/EuMC.2014.6986594
Filename
6986594
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