| 摘要 |
<P>PROBLEM TO BE SOLVED: To enable communication in a plurality of frequency bands in a plurality of communication systems at the same time by responding to the plurality of communication systems by a single antenna. <P>SOLUTION: The antenna device includes: a first antenna element transmitting or receiving radio waves in a first frequency band; a second antenna element transmitting or receiving radio waves in a second frequency band lower than the first frequency band along with the first antenna element; a first connection part connecting the first antenna element to the second antenna element, attenuating the first frequency band, and conducting the second frequency band; a first power feed part formed at one end of the first antenna element; a second connection part arranged at an end of the second antenna element different from the first connection part side, and attenuating the second frequency band; and a second power feed part connected to the second antenna element through the second connection part. <P>COPYRIGHT: (C)2009,JPO&INPIT |
