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Journal of the Optical Society of America B

Journal of the Optical Society of America B

| OPTICAL PHYSICS

  • Editor: Henry van Driel
  • Vol. 29, Iss. 11 — Nov. 1, 2012
  • pp: 3150–3156

Design of highly directive antenna made of homogeneous media

Lujun Huang, Xiaoshuang Chen, Bo Ni, Guanhai Li, Zhifeng Li, and Wei Lu  »View Author Affiliations


JOSA B, Vol. 29, Issue 11, pp. 3150-3156 (2012)
http://dx.doi.org/10.1364/JOSAB.29.003150


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Abstract

Transformation optics, which is based on the form invariance of Maxwell equations under different coordinate sets, has become a powerful tool to manipulate the propagation path of electromagnetic waves. The development of metamaterials also facilitates the practical realization of transformation-optics-based devices. In this paper, we propose a general transformation to design a horn antenna with high directivity by using homogeneous and anisotropic media. As long as the horn antenna is divided into several triangle blocks and the general transformation is applied, the material property in each block is homogeneous. Full-wave simulation based on the finite element method is performed to indicate the performance of the device. According to the numerical results, it is found that the electromagnetic field inside the horn area can be either stretched or compressed at will, and simultaneously fields outside the device are little disturbed. Thus, it offers us considerable freedom in designing the high-gain antenna. Furthermore, it is also demonstrated that the radiation direction can be arbitrarily controlled by carefully setting the geometrical parameters of the antenna. In the end, a multiradiation beam antenna, as one of the potential applications, is investigated.

© 2012 Optical Society of America

OCIS Codes
(160.1190) Materials : Anisotropic optical materials
(230.0230) Optical devices : Optical devices
(260.2110) Physical optics : Electromagnetic optics
(160.3918) Materials : Metamaterials

ToC Category:
Physical Optics

History
Original Manuscript: June 7, 2012
Revised Manuscript: August 19, 2012
Manuscript Accepted: October 2, 2012
Published: October 26, 2012

Citation
Lujun Huang, Xiaoshuang Chen, Bo Ni, Guanhai Li, Zhifeng Li, and Wei Lu, "Design of highly directive antenna made of homogeneous media," J. Opt. Soc. Am. B 29, 3150-3156 (2012)
http://www.opticsinfobase.org/josab/abstract.cfm?URI=josab-29-11-3150


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