Journal
FREQUENZ
Volume 67, Issue 9-10, Pages 271-276Publisher
WALTER DE GRUYTER GMBH
DOI: 10.1515/freq-2012-0136
Keywords
anisotropic metamaterial; polarizer; circular polarized horn antenna
Categories
Funding
- National Natural Science Foundations of China [61001039]
- Research Foundation of the Key Laboratory of Electromagnetic Radiation and Detection Technology of Chinese Academy of Sciences
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In this paper, a novel design of a circular polarized horn antenna is presented. An anisotropic metamaterial slab with metal periodic structures printed on a substrate is designed and its constitutive parameters and S parameters are analyzed. It shows that the metamaterial is anisotropic and can turn a linearly polarized wave to a circular polarized one. Then a novel horn antenna composed of a conventional rectangular horn antenna and the metamaterial slab is fabricated and measured. The results show that the novel horn antenna radiates a left handed circular polarized wave with an axis ratio below 3 dB at 16 GHz, and its gain and radiation pattern are the same as those of the conventional rectangular horn antenna.
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