Exact Solution for the Protected TEM edge mode in a PTD-Symmetric Parallel-Plate Waveguide

Enrica Martini, Mario G. Silveirinha, Stefano Maci

A Parity Time-reversal Dual (PTD) symmetric structure constituted by a Perfectly-Electric-Perfectly magnetic (PEC-PMC) parallel plate waveguide (PPW) is analyzed. This waveguide su…