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RESEARCH PRODUCT
Optimized Multipactor-Resistant Wedge-Shaped Waveguide Bandpass Filters
Carlos Vicente QuilesDavid Raboso García-baqueroBenito Gimeno MartínezChristoph ErnstDietmar SchmittJaime Hueso GonzalezVicente Enrique Boria EsbertMáriam Taroncher Calduchsubject
Circuit synthesisNuclear and High Energy PhysicsMaterials sciencebusiness.industryEquivalent rectangular bandwidthBandwidth (signal processing)Space technologyElectrical engineeringBandpass filtersCondensed Matter PhysicsKu bandWedge (geometry)Cutoff frequencylaw.inventionResonatorOpticsBand-pass filterlawTEORIA DE LA SEÑAL Y COMUNICACIONESMultipactor (MP)Vacuum breakdownMicrowave filtersbusinessWaveguidedescription
[EN] Wedge-shaped waveguides present a certain advantage with respect to rectangular waveguides regarding their resistance to multipactor discharges. In this paper, the optimal configuration for the wedge geometry is investigated based on theoretical results, on a precise multipactor prediction tool, and on previous experience. In addition, design rules are presented, which allow us to achieve for wedge-shaped filters electrical performances comparable to the ones of rectangular waveguide filters, while at the same time improving the multipactor-free power range. As a proof of concept, two three-pole bandpass filters with equivalent electrical characteristic of 150-MHz bandwidth, centered at 12 GHz (Ku band), and the same Q factor have been designed, manufactured, and tested. The first design is based on conventional rectangular waveguide technology, while the second one has non-parallel broadside walls (wedge-shaped cross section). The multipactor power threshold and RF performance of the filters have been measured in order to validate the improvements achievable employing wedge-shaped resonators.
year | journal | country | edition | language |
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2013-08-01 | IEEE Transactions on Plasma Science |