| 摘要 |
An antenna apparatus for a radio set capable of reducing influences from the human body, improving the gain and reducing a non-absorption ratio (SAR) without narrowing the communication area. The apparatus according to the present invention is an unbalanced power supply type antenna apparatus for a radio set provided with a power-supplied antenna element 1 and a base plate 3, wherein a tabular parasitic element 7 is placed along the base plate 3 and the length of the parasitic element 7 is set so that the tabular parasitic element 7 operates as a reflector when placed on the human body side and operates as a wave director when placed on the opposite side of the human body.
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