Patent ID: 8587484

Claim:
A quasi-balanced fed antenna structure, comprising: a substrate having a first edge and a second edge located on opposing sides of the substrate; an asymmetric T-type monopole element printed on said substrate, said asymmetric T-type monopole element comprising a solid shorting-line extending across a top of thereof, a first asymmetric radiation strip extending along the first edge of the substrate and connected to said solid shorting-line and forming a balanced antenna, a solid open-stub, and a second asymmetric radiation strip extending along the second edge of the substrate and connected to said solid open-stub and forming an un-balanced antenna; a feeding-point located on a bottom of said asymmetric T-type monopole element; and a shorting-point located on the bottom of said asymmetric T-type monopole element and electrically connected to said solid shorting-line.