| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide an antenna device in which an electrical length of a radiating conductor plate can be adjusted and a frequency can be adjusted. <P>SOLUTION: An antenna device of the present invention includes a ground conductor 1 and a radiating conductor plate 8 made of a metal plate which is spaced a predetermined interval away from the ground conductor 1. The radiating conductor plate 8 is provided with an adjusting means Z for adjusting the electrical length. Thus, the correction of the electrical lengths can be made even if there is a difference between the electrical lengths of the radiating conductor plate caused by assembling errors, etc. In addition, when the antenna device is used in a state in which it is connected to external equipment, the adjusting means Z allows the adjustment of the electrical lengths of the radiating conductor plate 8 even if the electrical lengths of the radiating conductor plate 8 are subjected to the electrical influence from the external equipment and its surrounding environment, thereby adjusting frequencies and obtaining the antenna device of excellent performance. <P>COPYRIGHT: (C)2005,JPO&NCIPI</p> |
