Patent ID: 6104348
Filing Date: 2000-08-15
Classification: H01Q

Abstract:
An antenna device for receiving and/or transmitting dual polarized electromagnetic waves, comprising at least one antenna element located at a distance from a ground plane layer of electrically conducting material, and a feed network having two feed elements being adapted to transfer said dual polarized electromagnetic waves in two mutually orthogonal channels from and/or to said antenna element, further comprising parasitic elements of an electrically conducting material disposed in a region, the region surrounding said antenna element at least on two opposite lateral sides thereof and includes a space between and including two parallel planes being defined by said ground plane layer and said antenna element, respectively, each such parasitic element comprising at least one elongated, longitudinal portion extending along an associated one of said opposite lateral sides of said antenna element and forming at least a part of a frame-like structure so as to provide an effective isolation between said two mutually orthogonal channels.