| 摘要 |
Disclosed are a grounded antenna having U-shaped high-impedance surface metal strips and wireless communication device having said antenna. The antenna is disposed inside of a housing, and comprises an antenna radiation unit and a ground plate thereof; disposed in intervals on the ground plate are multiple high-impedance surface units; each high-impedance surface unit consists of three high-impedance surface metal strips connected to one another, arranged to form a U-shape; a high-impedance surface through hole is made at the bottom of the U-shape, and through holes connect the high-impedance surface metal strips of the high-impedance surface units. By means of multiple U-shaped high-impedance surface units, surface waves are repressed or deterred from transmitting along the surface, and incident plane waves perpendicular to the surface are reflected at the same phase. High-impedance surface has the characteristics of suppressing surface waves, and can therefore, when placed around an antenna, reduce the radiation toward a person's head, lower the specific absorption rate without reducing the radiation capability of the antenna or compromising communication quality. The present invention is universally applicable. |
