| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide an antenna device which does not cause the deterioration of antenna performance that is caused by locating a ground pattern for a switch, connecting with a ground terminal of the switch, close to an antenna element, which changes the electric length of the antenna element to switch a resonance frequency. <P>SOLUTION: A first antenna element 102, a second antenna element 103, and a micro electro mechanical systems (MEMS) switch 104 are provided, and a feeding point 110 is provided at one end of the first antenna element 102. The other end 113 of the first antenna element 102 is connected with a first terminal 106 of the MEMS switch 104, and one end 114 of the second antenna element 103 is connected with a second terminal 107 of the MEMS switch 104. The one end of the first antenna element 102 is grounded with a ground pattern 101 through an inductor 115. A ground terminal 105 of the MEMS switch 104 is connected with the other end 113 of the first antenna element 102. <P>COPYRIGHT: (C)2013,JPO&INPIT |
