摘要 |
<p><P>PROBLEM TO BE SOLVED: To prevent the deterioration of the magnetic strength and the deterioration of the reception efficiency of electric waves in the vicinity of an antenna device. <P>SOLUTION: An antenna device 1 includes: a dielectric substrate 6; a ground electrode 5 formed on the dielectric substrate 6; a first electrode part 2; a second electrode part 3; and a third electrode part 4. The first electrode part 2 is formed on a first surface of the dielectric substrate 6, has an opening 12, is provided with a first power supply point 7. The second electrode part 3 is disposed on the inner side of the opening 12 of the first electrode part 2 and is provided with a second power supply point 8. The third electrode part 4 is disposed on the inner side of the opening 12 of the first electrode part 2 so as to be spaced away from the second electrode part 3 and is electrically connected with the ground electrode 5. <P>COPYRIGHT: (C)2013,JPO&INPIT</p> |