We extend the mantle cloaking technique to bi-layered geometries, in order to broaden the bandwidth of scattering suppression for applications in scattering reduction from passive and active radiating elements. In particular, we demonstrate a bi-layer cloak covering a finite-length conductive rod for multiband and wideband operation, offering a >5 dB (70%) scattering suppression over bandwidths that exceed any passive cloak demonstrated so far by over nine times. In addition to large bandwidths, we demonstrate also large scattering reduction at the design frequency of 3.3 GHz. The ease of fabrication of the proposed cloaks lends itself to rapid prototyping for various radio-frequency applications, and it requires no dielectric substrate, with advantages in terms of cost, weight and loss reduction.
Soric, J.C., Monti, A., Toscano, A., Bilotti, F., Alu, A. (2015). Multiband and wideband bilayer mantle cloaks. IEEE TRANSACTIONS ON ANTENNAS AND PROPAGATION, 63(7), 3235-3240 [10.1109/TAP.2015.2421951].
Multiband and wideband bilayer mantle cloaks
Monti, Alessio;TOSCANO, ALESSANDRO;BILOTTI, FILIBERTO;
2015-01-01
Abstract
We extend the mantle cloaking technique to bi-layered geometries, in order to broaden the bandwidth of scattering suppression for applications in scattering reduction from passive and active radiating elements. In particular, we demonstrate a bi-layer cloak covering a finite-length conductive rod for multiband and wideband operation, offering a >5 dB (70%) scattering suppression over bandwidths that exceed any passive cloak demonstrated so far by over nine times. In addition to large bandwidths, we demonstrate also large scattering reduction at the design frequency of 3.3 GHz. The ease of fabrication of the proposed cloaks lends itself to rapid prototyping for various radio-frequency applications, and it requires no dielectric substrate, with advantages in terms of cost, weight and loss reduction.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
