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Dielectric-Loaded Microwave Rectangular Waveguide and Higher Order Modes Resonator



Christopher L. Holloway, Abdulaziz H. Haddab, Edward Kuester


Resonant transmission through a dielectric-loaded slot in a thick conducting diaphragm embedded in a rectangular waveguide is modeled using an analytical approximation based on the slot being small compared to a free space wavelength. Image theory relates this problem to a metasurface consisting of an array of such slots. We demonstrate the existence of ordinary (Fabry-Perot) transmission resonances associated with the fundamental mode of the slot, as well as extremely narrowband (Fano) resonances involving the higher-order modes in the slot. The theoretical predictions are confirmed through full-wave numerical simulation and by experimental measurement. The results have potential application to sensors material property measurement.
IEEE Transactions on Antennas and Propagation


Extraordinary transmission, dielectric-loadedslots, loaded waveguide, Fano resonance, metasurfaces


Holloway, C. , Haddab, A. and Kuester, E. (2021), Dielectric-Loaded Microwave Rectangular Waveguide and Higher Order Modes Resonator, IEEE Transactions on Antennas and Propagation, [online], (Accessed June 12, 2024)


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Created June 2, 2021, Updated February 16, 2022