| 摘要 |
A dual-frequency directional antenna includes a dielectric substrate, high frequency antenna elements, low frequency antenna elements, symmetrical micro-strip Lines and baluns respectively disposed on a front surface and a rear surface of the dielectric substrate. Two ends of a symmetrical micro-strip line are respectively connected to two low frequency antenna elements. The high frequency antenna elements are disposed between two low frequency antenna elements and connected to a symmetric micro-strip line. Each balun is disposed between two high frequency antenna elements, one end of the balun is connected to a middle segment of a symmetrical micro-strip line and the other end is connected to an antenna feeding port. The dual-frequency directional antenna according to the present invention with thin and compact size has dual operating frequency bands property and is applicable for indoor environment.
|
