| 摘要 |
PROBLEM TO BE SOLVED: To provide an antenna system which has a 360 deg. free rotation structure with superior mechanical strength and electric performance and is thin, compact, and superior in portability. SOLUTION: A rotation axis part 1 becomes a center axis of rotation by bending an antenna element 1, a hold part 4 which fixed the antenna element 1 to the housing of a portable radio device and a feeding metal fixture which transmits electric power to the antenna element 1 are provided nearby the rotation axis part 2, sandwiched between the upper housing 6 and lower housing 7 of the housing, and integrally fixed to the housing. While electric contact and the reliability of a rotary mechanism are secured, a movable part 3 of the antenna element 1 can be rotated by 360 deg..
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