Controlling the Emission of Electromagnetic Sources by Coordinate transformation

@misc{citeulike:2500346, abstract = {The coordinate transformation on the space that contains electromagnetic sources is studied. We find that, not only the permittivity and permeability tensors of the media, but also the sources inside the media will take another form in order to behave equivalently as the original case. It is demonstrated that, a source of arbitrary shape and position in the free space can be replaced by an appropriately designed metamaterial coating with current distributed on the inner surface and would not be detected by outer observers, because the emission of the source can be controlled at will in this way. As examples, we show how to design conformal antennas by covering the sources with transformation media. The method proposed in this letter provides a completely new approach to develop novel active EM devices.}, author = {Luo, Yu and Zhang, Jingjing and Ran, Lixin and Chen, Hongsheng and Kong, Jin A. }, citeulike-article-id = {2500346}, eprint = {0712.3776}, keywords = {cloaking, metamaterial}, month = {Dec}, posted-at = {2008-03-10 12:31:33}, priority = {2}, title = {Controlling the Emission of Electromagnetic Sources by Coordinate transformation}, url = {http://arxiv.org/abs/0712.3776}, year = {2007} }

TY - ELEC ID - citeulike:2500346 TI - Controlling the Emission of Electromagnetic Sources by Coordinate transformation N2 - The coordinate transformation on the space that contains electromagnetic sources is studied. We find that, not only the permittivity and permeability tensors of the media, but also the sources inside the media will take another form in order to behave equivalently as the original case. It is demonstrated that, a source of arbitrary shape and position in the free space can be replaced by an appropriately designed metamaterial coating with current distributed on the inner surface and would not be detected by outer observers, because the emission of the source can be controlled at will in this way. As examples, we show how to design conformal antennas by covering the sources with transformation media. The method proposed in this letter provides a completely new approach to develop novel active EM devices. KW - cloaking KW - metamaterial AU - Luo, Yu AU - Zhang, Jingjing AU - Ran, Lixin AU - Chen, Hongsheng AU - Kong, Jin PY - 2007/Dec/21/ UR - http://arxiv.org/abs/0712.3776 ER -