A shorted waveguide-stub coupling mechanism for narrow-band multimode coupled resonator filters

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dc.contributor.authorSteyn W.
dc.contributor.authorMeyer P.
dc.date.accessioned2011-05-15T16:01:45Z
dc.date.available2011-05-15T16:01:45Z
dc.date.issued2004
dc.description.abstractA shorted waveguide-stub coupling mechanism is presented for implementing narrow-band multimode coupled cavity filters without coupling screws. The coupling element is a shorted rectangular waveguide stub placed in the end walls of cylindrical filter cavities, using perturbation of the magnetic fields to obtain coupling between degenerate modes. This structure is well suited to analysis and design with the efficient and accurate mode-matching method. Coupling coefficients and resonator frequencies can be controlled by varying cavity dimensions and the length, width, and depth of the rectangular coupling element. The accuracy with which the coupling can be realized and the elimination of coupling screws reduce the amount of tuning substantially. A third-order Chebyshev filter, realized in a triple-mode cavity with no coupling screws and only two tuning screws, is presented to verify the use of the coupling structure.
dc.description.versionArticle
dc.identifier.citationIEEE Transactions on Microwave Theory and Techniques
dc.identifier.citation52
dc.identifier.citation6
dc.identifier.issn189480
dc.identifier.other10.1109/TMTT.2004.828465
dc.identifier.urihttp://hdl.handle.net/10019.1/12136
dc.subjectComputer simulation
dc.subjectFinite element method
dc.subjectInsertion losses
dc.subjectMagnetic couplings
dc.subjectNatural frequencies
dc.subjectRectangular waveguides
dc.subjectTuning
dc.subjectWaveguide components
dc.subjectCavity resonances
dc.subjectCoupling coefficients
dc.subjectDual modes
dc.subjectTriple modes
dc.subjectMicrowave filters
dc.titleA shorted waveguide-stub coupling mechanism for narrow-band multimode coupled resonator filters
dc.typeArticle
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