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Implementation of an Open Ended PTD-Symmetric Edge Waveguide

This paper demonstrates the practical feasibility of an open-ended parity, time-reversal, duality symmetric edge waveguide structure. This includes perfect electric and perfect magnetic based parallel plate waveguides. For practical implementation, a mushroom structure is used to emulate the perfect magnetic boundary conditions. Two kinds of edge waveguides are implemented and numerically analyzed. Results concerning the return loss and the ability to confine the EM field near the edge waveguide at the open-end are shown and compared.