Directive Emission Obtained by Coordinate Transformation

Details Directive Emission Obtained by Coordinate Transformation Directive Emission Obtained by Coordinate Transformation

2007-12-17

arxiv.org/abs/0712.2755v1

Progress In Electromagnetics Research, PIER 81, 437?C446 (2008)

Physics

Classical Physics

15 pages, 5 figures

Scientific paper

10.2528/PIER08011002

We use coordinate transformation theory to realize substrates that can modify the emission of an embedded source. Simulation results show that with proper transformation functions the energy radiated by a source embedded in these space variant media will be concentrated in a narrow beam. The thickness of the slab achieved with our transformations will no longer be restricted by the evanescent modes and the source can be placed at any position along the boundary of the substrate without affecting the radiation pattern. We also discuss the case where reduced parameters are used, which still performs well and is physically realizable.

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