| 摘要 |
<P>PROBLEM TO BE SOLVED: To suppress influences by a peripheral environment in an antenna device that can deal with a plurality of frequency bands. <P>SOLUTION: A radiation electrode 104 is formed in a laterally-long shape (in a y-axis direction), and a power feeding point 110 is installed at a longer axis center part thereof. A trap circuit is installed between the power feeding point 110 of the radiation electrode 104 and a power feeding source. A phase adjustment circuit is also installed between the power feeding point 110 and the power feeding source. The radiation electrode 104 includes an upper surface radiation electrode 106 and a lateral surface radiation electrode 108, and the power feeding point 110 is installed to the lateral surface radiation electrode 108. The lateral surface radiation electrode 108 has such a shape as to converge from an upper surface to the power feeding point 110. <P>COPYRIGHT: (C)2013,JPO&INPIT |
