Energy tunneling in wire-loaded in substrate integrated waveguide

The Substrate Integrated Waveguides (SIWs), compared to the non-planar rectangular waveguides are flexible, compact, robust, easily manufactured and suitable for planar integration. SWI supports transmission of electromagnetic waves; they are also candidate in designing high speed circuits, antennas and couplers. In this paper, we propose a wire-loaded substrate integrated waveguide (SIW) structure that supports the energy-tunneling phenomenon. As anticipated, the proposed model supports energy tunneling depending upon the wire length. The resulting transmission response is, therefore, highly frequency selective. Hence, such configurations can be employed to design highly sensitive dielectric sensors and high frequency filters.