| 摘要 |
This disclosure discloses an antenna device connected to a signal generating device configured to generate a communication signal to a communication target, comprising: a magnetic-field radiation antenna and an electric-field radiation antenna configured to carry out information transmission and reception via radio communication at substantially the same frequency with each other; and a selection connecting device configured to selectively connect either one of the magnetic-field radiation antenna and the electric-field radiation antenna to the signal generating device.
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