| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To suppress the effect of an inducing current to an antenna-characteristic which is induced on the ground of an upper substrate disposed so as to overlap on a lower substrate having a provided communicating antenna, in a portable radio device. <P>SOLUTION: The portable radio device has an upper substrate 1 and a lower substrate 2 on whose single-sided surface or double-sided surfaces grounds are provided full surface-wise, an antenna element 3 disposed on an end side of the lower substrate 2, and a current supplying portion 4 for supplying currents to the antenna element 3 and to a ground 11b of the lower substrate 2. The upper and lower substrates 1, 2 are provided so as to overlap each other in the portable radio device. With respect to the portable radio device, a slit 5 for dividing a ground 11a of the upper substrate 1 into two portions is provided in a region of the upper substrate 1 wherein the upper and lower substrates 1, 2 overlap each other. <P>COPYRIGHT: (C)2010,JPO&INPIT</p> |
