| 摘要 |
PROBLEM TO BE SOLVED: To provide an antenna system providing a high antenna gain by increasing the loop area of a micro loop antenna. SOLUTION: The antenna system 1 has the micro loop antenna 3, a circuit board 2, and a case 10 comprising resin-made case members 11 and 12 housing them. While a metal conductor 3a forming the micro loop antenna 3 is wired between joint surfaces of the case members 11 and 12 and the circuit board 2 is disposed inside the case members 11 and 12, a voltage is applied to the metal conductor 3a by an external voltage application device 20 to heat the metal conductor 3a and at the same time, the case members 11 and 12 are pressed against each other to be joined together. The micro loop antenna 3 is used as the metal conductor 3a used for the joining and then can be disposed near an external surface of the case 10 to obtain wide loop area, and the antenna system 1 can easily be manufactured with high waterproofness and sealing property. COPYRIGHT: (C)2009,JPO&INPIT
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