Patent ID: 6693603
Filing Date: 2004-02-17
Classification: H01Q

Abstract:
An antenna arrangement comprising:a mounting surface; a first ground plane parallel to said mounting surface bearing a first antenna having a polarisation perpendicular to said first ground plane; and a second ground plane arranged substantially perpendicular to said mounting surface and bearing a second antenna having a polarisation perpendicular to said second ground plane; wherein the first and second antennas are not co-planar with respect to one another; and in use each antenna produces a substantially omnidirectional antenna pattern in an azimuth plane; and wherein said antenna arrangement is capable of being mounted in two orthogonal orientations wherein: in a first orientation said mounting surface is horizontal, said first antenna has a first polarization and said second antenna has a second polarization and in a second orientation said mounting surface is vertical, said first antenna has said second polarization and said second antenna has said first polarization.