Patent ID: 7616168
Filing Date: 2009-11-10
Classification: H01Q

Abstract:
1. An antenna system comprising: a crossed dipole pair dual polarized antenna, the crossed dipole pair dual polarized antenna comprising a first dipole and a second dipole that intersect along a longitudinal axis of the crossed dipole pair dual polarized antenna; and a feedback element electromagnetically coupled to the crossed dipole pair dual polarized antenna for generating a feedback signal that is received by at least one of the dipoles; the feedback element comprising at least one conductive planar strip; the feedback element intersecting the longitudinal axis and being spaced apart from the intersection of the crossed first and second dipoles; the feedback element generating the feedback signal in response to receiving electromagnetic signals transmitted by at least one of the dipoles, the feedback signal operative to cancel leakage signals and thereby increase an isolation characteristic of the antenna system.