| 摘要 |
<p>A multi-band antenna is adapted to operate in a first frequency band and a second frequency band which is higher than the first frequency band. A first antenna element is adapted to operate in the first frequency band, and has a first end which is electrically connected to the power feeding point and a second end which is electrically made open. A second antenna element is adapted to operate in the second frequency band, and has a third end which is electrically connected to the power feeding point and a fourth end which is electrically connected to the ground conductor. An electrical length of the first antenna element is set to 1/2 wavelength of the second frequency band, and an electrical length of the second antenna element is set to 1/4 wavelength of the first frequency band.</p> |
