| 摘要 |
PROBLEM TO BE SOLVED: To provide a small ultra-wideband antenna that suppresses influences of radiation electromagnetic waves to human bodies.SOLUTION: An antenna element 2 comprises a ground part, a loop part, and a monopole part. The ground part has a plurality of openings. The monopole part is a home base type and located in the loop part. A power feeding part is provided substantially at a center point of the rectangular antenna element, and the ground part and the loop part substantially equally divide the antenna element 2 into two at the point. A reflection plate 3 comprises two or more slits. When the reflection plate 3 and the antenna element 2 are arranged so as to be overlapped in parallel with each other, the loop part and the slit are overlapped, and further, another slit is overlapped with the opening. Two antenna elements 2 are located at both sides of the reflection plate 3, and fed and operated by being appropriately switched by switch means.SELECTED DRAWING: Figure 1 |
