| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a multi-frequency planar antenna realizing a multi-frequency shared antenna with a simple configuration. <P>SOLUTION: The antenna is provided with: a planar first radiation element 14 having the size decided by the wavelength of a first radio signal to be radiated; and a planar second radiation element 15 arranged substantially in parallel to the first radiation element 14 via a dielectric, decided by the wavelength of a second radio signal to be radiated and smaller than the planar shape of the first radiation element 14. The substantial centers of the first and second radiation elements 14 and 15 are commonly connected by an internal conductor 17 of a feeder line 16. <P>COPYRIGHT: (C)2007,JPO&INPIT |
