| 摘要 |
<p>An antenna device of diversity structure comprising a whip antenna having a monopole antenna (102) and a helical antenna (302) and a built-in loop antenna (105) contained in a case (107) of a mobile radio device, wherein a gap holding member (304) forms a small capacitance gap between a power feed spring (104) and the helical antenna (302) through an antenna holder (103) when the base of the helical antenna (302) is placed into contact with the antenna holder (103), whereby the coupling of antennas of diversity structure hardly exerts influence, and consequently realizing a high gain.</p> |
