| 摘要 |
<P>PROBLEM TO BE SOLVED: To allow further miniaturization as well as generation of a wanted current mode. <P>SOLUTION: In an antenna device, a first antenna element is folded back at a folding-back part to form a forward part and a return part, with a start end of the forward part of the first antenna element connected to a feeder part while an end of the return part connected to a ground part. The first antenna element is formed helically under such condition as the forward part and the return part are arranged parallel to each other with a first interval in between. The pair of forward part and return part formed in helical is so arranged that an interval between the forward part of the pair and the return part of the adjoining pair comes to be a second interval which is wider than the first interval. <P>COPYRIGHT: (C)2012,JPO&INPIT |
