In this letter, we investigate the concept and the applications of power-dependent mantle cloaking devices. The idea is to exploit the intrinsic nonlinearity of a diode pair for the realization of metasurfaces whose cloaking behavior can be turned on and off by acting on the power level of the impinging electromagnetic field. A simple analytical model, taking into account the parasitic elements of the diodes, is proposed, and its effectiveness evaluated through full-wave simulations. Then, the nonlinear mantle cloaks are used for the design of power-dependent antenna arrays whose radiation pattern can be tuned by changing the input power of the antenna. These innovative radiating systems may find applications in different scientific and technical fields.
Monti, A., Barbuto, M., Toscano, A., Bilotti, F. (2017). Nonlinear mantle cloaking devices for power-dependent antenna arrays. IEEE ANTENNAS AND WIRELESS PROPAGATION LETTERS, 16, 1727-1730 [10.1109/LAWP.2017.2670025].
Nonlinear mantle cloaking devices for power-dependent antenna arrays
Monti, Alessio;Barbuto, Mirko;Toscano, Alessandro;Bilotti, Filiberto
2017-01-01
Abstract
In this letter, we investigate the concept and the applications of power-dependent mantle cloaking devices. The idea is to exploit the intrinsic nonlinearity of a diode pair for the realization of metasurfaces whose cloaking behavior can be turned on and off by acting on the power level of the impinging electromagnetic field. A simple analytical model, taking into account the parasitic elements of the diodes, is proposed, and its effectiveness evaluated through full-wave simulations. Then, the nonlinear mantle cloaks are used for the design of power-dependent antenna arrays whose radiation pattern can be tuned by changing the input power of the antenna. These innovative radiating systems may find applications in different scientific and technical fields.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
