Patent ID: 6275192
Filing Date: 2001-08-14
Classification: H01Q

Abstract:
A planar antenna comprising:a dielectric layer with a predetermined thickness;a first ground layer formed on a top surface of the dielectric layer;a second ground layer formed on a bottom surface of the dielectric layer, the first ground layer and the second ground layer corresponding to each other;a first antenna unit which extends from a side of the first ground layer and a side of the second ground layer, the first antenna unit having a predetermined pattern which radiates a first polarized wave with an application of current;a second antenna unit which extends from a side of the first ground layer and a side of the second ground layer, the second antenna unit having a predetermined pattern which radiates a second polarized wave orthogonal to the first polarized wave with the application of current; anda feeding stripline installed between the first and the second antenna units, in the dielectric layer, the feeding stripline applies current to the first and the second antenna units,wherein the first and the second polarized waves are operative to be separately radiated from the first and the second antenna units, respectively.