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This letter presents a novel concept of band-pass filter realized with metal posts in folded substrate-integrated waveguide (FSIW) technology, together with an efficient specific design procedure. As a first step, it is shown that a particular dimension of the middle vane in the FSIW yields an equivalence to a dielectric-loaded unfolded rectangular waveguide. This equivalence is investigated by comparing...
This paper presents a novel Y-junction in folded substrate-integrated waveguide technology. The structure is analyzed with finite-element method using Ansys HFSS, and the simulation results show that the reflection coefficients of the 120° branch ports for the folded substrate-integrated waveguide Y-junction can satisfy the constraints for optimum performance of diplexers. In comparison with an unfolded...
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