In this contribution, we present some important advancements in Doppler cloak technology, which is based on the frequency mixing property of linear momentum-biased metamaterial, whose artificial permittivity function is modulated in space and time. The importance of such a technology is given by the possibility to manipulate the Doppler effect and restore the invisibility of cloaked object in relativistic motion. Here, we review the main characteristics of a conventional Doppler cloak, consisting of a system composed of a planar reflector covered by a spatio-temporally modulated slab. We demonstrate that such a scheme presents some drawbacks in terms of efficiency and, therefore, an enhanced version based on a momentum-biased parallel-plate medium is presented and discussed.
Ramaccia, D., Sounas, D., Alu', A., Toscano, A., Bilotti, F. (2016). Advancements in Doppler cloak technology: Manipulation of Doppler Effect and invisibility for moving objects. In 2016 10th International Congress on Advanced Electromagnetic Materials in Microwaves and Optics, METAMATERIALS 2016 (pp.295-297). Institute of Electrical and Electronics Engineers Inc. [10.1109/MetaMaterials.2016.7746521].
Advancements in Doppler cloak technology: Manipulation of Doppler Effect and invisibility for moving objects
RAMACCIA, DAVIDE;ALU', Andrea;TOSCANO, ALESSANDRO;BILOTTI, FILIBERTO
2016-01-01
Abstract
In this contribution, we present some important advancements in Doppler cloak technology, which is based on the frequency mixing property of linear momentum-biased metamaterial, whose artificial permittivity function is modulated in space and time. The importance of such a technology is given by the possibility to manipulate the Doppler effect and restore the invisibility of cloaked object in relativistic motion. Here, we review the main characteristics of a conventional Doppler cloak, consisting of a system composed of a planar reflector covered by a spatio-temporally modulated slab. We demonstrate that such a scheme presents some drawbacks in terms of efficiency and, therefore, an enhanced version based on a momentum-biased parallel-plate medium is presented and discussed.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
