Realization and Experimental Verification of Chiral Cascaded Circuit

In this letter, we present an implementation for the previously proposed chiral cascaded circuit (CCC) using lumped capacitors, inductors, and transformers. The design of a 180/0deg four-port coupler with one-unit-cell CCC is then presented. Both simulation and experimental results show that such a coupler with identical load at four ports behaves as an analogue to an isotropic chiral slab residing in a simple isotropic medium. Thus we indirectly verify the chiral characteristic of CCC using experiments.