Novel Second-Order Dual-Mode Dual-Band Filters Using Capacitance Loaded Square Loop Resonator
In: IEEE transactions on microwave theory and techniques, Jg. 60 (2012), Heft 3, S. 477-483
Online
academicJournal
- print, 15 ref 1
Zugriff:
This paper presents a novel approach for designing dual-mode dual-band bandpass filters using capacitance loaded square loop resonators (CLSLR). The CLSLR features compactness and spurious response suppression because of the loaded capacitance. A dual-band response is obtained via an extremely large perturbation in a single resonator and second-order dual-mode dual-band filters are realized by a new cascading principle. Coupling coefficients between two resonators in both bands can be controlled independently and external quality factors are also controlled by a particularly-designed coplanar waveguide (CPW) feed line. Three types of filters are designed to validate the analysis. They are direct coupling dual-mode dual-band filter, source-load coupling dual-mode dual-band filter with a better band-to-band isolation and CPW-feed dual-mode dual-band filter with a wider bandwidth. Measured results show good agreement with the design specifications.
Titel: |
Novel Second-Order Dual-Mode Dual-Band Filters Using Capacitance Loaded Square Loop Resonator
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Autor/in / Beteiligte Person: | SEN, FU ; BIAN, WU ; JIA, CHEN ; SUN, Shou-Jia ; LIANG, Chang-Hong |
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Zeitschrift: | IEEE transactions on microwave theory and techniques, Jg. 60 (2012), Heft 3, S. 477-483 |
Veröffentlichung: | New York, NY: Institute of Electrical and Electronics Engineers, 2012 |
Medientyp: | academicJournal |
Umfang: | print, 15 ref 1 |
ISSN: | 0018-9480 (print) |
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