| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a double-frequency shared planar antenna which is compact in shape and is higher in antenna gain. <P>SOLUTION: The double-frequency shared planar antenna available in two frequency bands comprises a first planar antenna and a second planar antenna. The first planar antenna has a characteristic resonated with a high frequency signal in a second frequency band which is a higher frequency band than two first frequency bands, and includes a first radiation plate. The second planar antenna has a characteristic resonated with a high frequency signal in the second frequency band and includes a second radiation plate. The first radiation plate has a shape in a part of which a recessed portion is provided, the second radiation plate is disposed along the recessed portion, a feed point is set at one terminal side of the second radiation plate, and the other terminal side of the second radiation plate is connected to the recessed portion of the first radiation plate. <P>COPYRIGHT: (C)2010,JPO&INPIT |
