| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide an antenna device coping with a plurality of frequency bands, capable of matching impedance at each of frequency bands. <P>SOLUTION: A GPS radiation electrode 108 radiates electric wave at a GPS frequency. A BT radiation electrode 110 radiates electric wave at a Bluetooth (R) frequency which is higher than the GPS frequency. A feeding electrode 114 supplies the electric power supplied from a feeding point 124 to the radiation electrodes. A matching circuit 126 is inserted between the feeding electrodes 114 and a ground pattern 106. One end of the GPS radiation electrode 108 is connected to the feeding electrode 114 at a first connection point. One end of the BT radiation electrode 110 is connected to the feeding electrode 114 at a second connection point. A connection point between the feeding electrode 114 and the matching circuit 126 is positioned between the first and second connection points. <P>COPYRIGHT: (C)2012,JPO&INPIT |
