| 摘要 |
PROBLEM TO BE SOLVED: To provide an antenna device having a slit, in which a radio wave can be transmitted/received with high sensitivity even in the case of direct location on the conductive portion of a mobile. SOLUTION: An antenna device 10 is provided with a conductive sheet material 11 equipped with a slit SL, a high permeability material 13 arranged to close at least the slit SL and feeders 14a and 14b respectively connected to the conductive sheet material while being confronted in the central position in the lengthwise direction of the slit SL.
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