Abstract
A novel guiding channel that is electromagnetic bandgap (EBG) based is presented. The structure is formed in a two-dimensional slab of a square lattice of multi-layer metallic open square rings. Dispersion diagrams and eigenfield distributions of the in-gap-guided mode are shown. The channel guide offers many advantages such as easy and flexible design for band-select applications while retaining its electromagnetic properties, simple fabrication (no drilling through the substrate) and compatibility with integrated circuit technology. Two EBG waveguide configurations with a feeding structure on a circuit board (PCB) were designed, fabricated and tested. It is shown experimentally that the length of the EBG guide does not impact the insertion loss significantly, which establishes low insertion loss of the guide.
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