Design of a Broadband Carpet Cloak by Using an One-Dimensional Distributed Transmission-Line Model

We propose a novel design method for broadband carpet cloaks that can hide objects whose size is larger than the wavelength. A non-resonant one-dimensional distributed transmission-line model is introduced to the design and a carpet cloak for hiding periodically arranged triangle large objects is designed by determining the line length and the characteristic impedance based on the theory. The broadband operations for the cases with the normal and the oblique incidences are confirmed by circuit simulations with a SPICE simulator.