Patent ID: 9413059
Filing Date: 2016-08-09
CPC Classification: H01Q

Claim Text:
1. A feeding system to feed an antenna element, comprising: an antenna element; a feeding coupling element attached to said antenna element; and a transmission line coupled to said feeding coupling element; wherein said feeding coupling element has a topology defining a first peripheral boundary enclosing an area of said feeding coupling element, wherein said antenna element comprises a resistive layer comprising a metal compound such that said resistive layer is partly electrically conductive, wherein said antenna element has a topology defining a second peripheral boundary enclosing an area of said resistive layer, wherein said topology of said feeding coupling element has at least one edge having a smooth configuration and a shape according to an elliptical function, and wherein said topology of said feeding coupling element is adapted to said topology of said antenna element to reduce a plurality of losses caused by a current density flowing within said area of said resistive layer, by a sufficient extent so as to enable said antenna element to radiate an electromagnetic signal with a radiation efficiency of between approximately 10% and 90%; and wherein said topology of said feeding coupling element is configured such that an input impedance at said feeding coupling element substantially matches an input impedance of said transmission line coupled to said feeding coupling element.