| 摘要 |
The present invention is to provide a planar double L-shaped antenna operable at two different frequency ranges comprising a patch line printed on a top of a dielectric substrate and having one end formed as a signal feed point; a ground metal plate printed on a bottom of the dielectric substrate; a first radiating element formed at the other end of the patch line and extended in a direction perpendicular to the patch line above and beyond the ground metal plate to shape as an inverted L shape; and a second radiating element extended beyond the ground metal plate to shape as an inverted L shape and spaced apart from the first radiating element, so that the first and the second radiating elements are capable of receiving signals having different frequencies.
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