Journal
PROGRESS IN ELECTROMAGNETICS RESEARCH M
Volume 13, Issue -, Pages 261-273Publisher
ELECTROMAGNETICS ACAD
DOI: 10.2528/PIERM10053102
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Funding
- Major Project of the National Science Foundation of China [60990320, 60990324]
- Natural Science Foundation of Jiangsu Province [BK2008031]
- 111 Project [111-2-05]
- National Science Foundation of China [60871016, 60901011, 60921063]
- China Postdoctoral Science Foundation [20080441006]
- Fundamental Research Funds for the Central Universities [LZUJBKY-2009-61]
- Inter-Discipline Science Foundation of Lanzhou University [LZUJC2007001]
- Natural Science Foundation of Gansu Province [0803RJZA029]
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We propose a planar focusing antenna design, which has the same performance as its parabolic counterparts and can be realized using PEC-backed gradient index dielectrics. In this design, quasi-conformal transformation optics is first utilized to transform a parabolic surface into a planar one, then the anisotropy factor of the resultant material is minimized, and the material is approximately treated as isotropic. Examples with realizable material parameters are given, and the simulation results validate the design. The proposed method could be used to design planar focusing antennas with high directivity and similar devices. The idea can also be applied to new device designs in optics engineering.
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