| 摘要 |
<P>PROBLEM TO BE SOLVED: To reduce space, reduce cost, and improve performance. <P>SOLUTION: An antenna device comprises a first antenna pattern 22 for several bands of high-frequency commonly using a feeding pattern part 25, and a second antenna pattern 23 for a low-frequency band. The first antenna pattern 22 is continuously installed in an almost loop shape at a top part of the feeding part 25, and its overall length is about one wavelength of the first frequency. The second antenna pattern 23 is installed continuously into an almost U shape at the top part of the feeding part 25, and composed one side open pattern, whose length is about 1/4 wavelength of the 2nd frequency. A return part 30 is formed in at least one of either the first antenna pattern 22 or the second antenna pattern 23. <P>COPYRIGHT: (C)2004,JPO |
