| Popis: |
We present a closed-form expression for the impedance of a metasurface coating for a dielectric cylinder, able to cancel all m-indexed harmonic scattered by the cylinder until an arbitrary order M. Combining Mie theory with the transmission line methodology, a dielectric scatterer, seen as a generic load admittance $Y_{a}$ , is covered by a mantle cloak with surface admittance function $Y_{s}(M, \phi)$ , depending on the $M$ index and on the azimuthal variable $\phi$ . It is demonstrated that the scattered energy is hidden inside the dielectric object, forming internal nonradiating modes supported by the azimuthally varying complex surface impedance boundary. |
