To provide an antenna device capable of increasing a band width easily.
An antenna device in which element tips 100 of respective two elements 10a and 10b in a folding dipole antenna with parallel lines having short-circuited both ends and a certain interval therebetween are folded in a vertical direction and a horizontal direction comprises: a slot 105 provided by making one of two elements 101 and 103 at both ends parallel to each other a conductor surface 104, in which neighbouring three elements 101 to 103 included in the elements 10a and 10b make a U-shape; a feeding terminal 20 connected to a high frequency power supply 40; a ground terminal 30 connected to a ground 50; and a reactance element 60 provided between an element 106 facing the feeding terminal 20 or the ground terminal 30 and the feeding terminal 20 or ground terminal 30. The reactance element 60 can form a new resonance route so that a band width can be increased easily.
| JP3937935 | WIRELESS COMMUNICATION CARD FOR INFORMATION PROCESSING APPARATUS |
| WO/1990/015452 | ANTENNA WITH BENDS |
| WO/2023/188974 | MIMO ANTENNA DEVICE |
KOYANAGI YOSHIO
| JP2010245894A | 2010-10-28 |
| WO2009031229A1 | 2009-03-12 |
Toshimitsu Ichikawa
Kimihide Hashimoto
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