| 摘要 |
The present invention relates to a metamaterial antenna, where the metamaterial antenna includes an enclosure, a feed, a first metamaterial that clings to an aperture edge of the feed, a second metamaterial that is separated by a preset distance from the first metamaterial and is set oppositely, and a third metamaterial that clings to an edge of the second metamaterial, where the enclosure, the feed, the first metamaterial, the second metamaterial, and the third metamaterial make up a closed cavity; and a central axis of the feed penetrates center points of the first metamaterial and the second metamaterial; and a reflection layer for reflecting an electromagnetic wave is set on surfaces of the first metamaterial and the second metamaterial, where the surfaces are located outside the cavity. The present invention uses distinctive electromagnetic properties of the metamaterial, and performs reflections of the electromagnetic wave for multiple times to improve aperture efficiency of the antenna and accomplish good far-field radiation field responses. In addition, the design of reflecting the electromagnetic wave for multiple times reduces thickness of the antenna significantly and makes an antenna system smaller. |
