Patent ID: 6069586
Filing Date: 2000-05-30
Classification: H01Q

Abstract:
An antenna for receiving and/or transmitting electromagnetic waves, comprising:an array of antenna elements including at least one longitudinal row of antenna elements located at a distance from each other and defining gaps therebetween,parasitic elements located in the vicinity of the gaps between said antenna elements,two mutually isolated channels that receive and/or transmit dual polarized, mutually orthogonal waves from/to each of said antenna elements,wherein each of said parasitic elements include an elongated portion extending longitudinally substantially in parallel to a centre line of said longitudinal row of antenna elements, whereby each elongated portion has one end adjacent the antenna element and extend adjacent to the gap, andwherein said parasitic elements establish, in addition to an inevitable direct inter-channel coupling between the antenna elements in a respective pair of adjacent antenna elements, a further coupling between the antenna elements in said respective pair, said further coupling is phase shifted relative to said direct coupling to substantially reduce the resulting total inter-channel coupling therebetween.