| 摘要 |
FIELD: radio engineering, communication.SUBSTANCE: present invention relates to an antenna for a radar detector, comprising: a power supply unit; first and second branches extending from said power supply unit; a first frequency band patch antenna connected to said first branch and having a first frequency band characteristic; a second frequency band patch antenna connected to said second branch and having a second frequency band characteristic; a second frequency band antenna stub situated between said power supply unit and said first frequency band patch antenna on said first branch; and a first frequency band antenna stub situated between said power supply unit and said second frequency band patch antenna. In the disclosed antenna for a radar detector, one power supply unit can be coupled with a plurality of antennae having different frequency characteristics without detriment to characteristics of said plurality of antennae.EFFECT: reducing size and widening the bandwidth with high gain.20 cl, 12 dwg |
