| 摘要 |
<p>Provided is a small and cheap portable radio apparatus of a simple structure capable of exhibiting high broadband antenna performance and soaking effect, and lowering the peak temperature of the chassis surface. A portable radio apparatus comprises an upper chassis (1), a lower chassis (2), a hinge (3) for pivotally coupling the upper chassis (1) and the lower chassis (2), an antenna element (14) and a first circuit board (13) both provided in the upper chassis (1), and a second circuit board (23) provided in the lower chassis (2) with a power feeder (24) and a ground pattern. The antenna element (14) is formed of graphite. The hinge (3) has a rotational shaft (31) made of conductive metal for pivotally coupling the upper chassis (1) and the lower chassis (2). The rotational shaft (31) is spatially coupled with the antenna element (14) at a predetermined distance and electrically connected to the power feeder (24) while spaced apart from the ground pattern on the second circuit board (23). The antenna element (14), the rotational shaft (31), and the ground pattern on the second circuit board (23) serve as the antenna.</p> |
