Cylindrical Transmission-Line Cloak for Microwave Frequencies

We present design and simulations of a cylindrical electromagnetic cloak which is based on a method employing periodic meshes of transmission-line networks. The cloaked object can be a connected or non-connected mesh of inclusions composed of an arbitrary material. In the example case studied in this work, we cloak a cylindrical mesh of rods made of a perfect electric conductor. Since the period of the cloaked object´s inclusions is much smaller than the wavelength of the impinging radiation, the cloaked object is effectively impenetrable to the electromagnetic fields. When placed inside the proposed cloak, the total scattering cross section of the system is shown to be highly reduced in a large bandwidth, when compared to the case without the cloak.