High Gain Patch Antenna with Composite Right-Left Handed Structure and Dendritic Cell Metamaterials
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We present a novel high-gain patch antenna utilizing composite right-left handed (CRLH) structure and dendritic cell metamaterials. The proposed CRLH antenna, composed of modified Sievenpiper mushroom unit-cells, is based on the positive first-order resonance mode for high gain. In addition, the dendritic cell metamaterials are used to surround the proposed antenna to further increase the antenna directivity and gain due to suppressing the surface waves. The experimental results show that the gain and the directivity of the proposed antenna with CRLH and dendritic cells can be improved by 3.88 dB and 8.82, respectively, in comparison with a conventional patch antenna. Moreover, a 10-dB bandwidth with 9.55% is achieved. The measured results are in good agreement with the simulated ones.
KeywordsPatch antenna CRLH Dendritic metamaterials Radiation patterns High gain
This work is supported by the National Natural Science Foundation of China (Grant No.50872113), the state Key Development Program for Basic Research of China (Grant No. 2004CB719805), and the Defense Basic Research Program of China.
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