Patent ID: 6340950
Filing Date: 2002-01-22
Classification: H01Q

Abstract:
An antenna system, comprising:a substantially annular antenna element having an outer perimeter edge and an inner perimeter edge comprising: a solid conductive radiating surface defined by the region between the outer perimeter edge and the inner perimeter edge; a central substantially circular non-conductive aperture defined by the inner perimeter edge; and a plurality of feed points at substantially equally spaced angular positions about the inner perimeter edge; and a plurality of one-dimensional amplifiers, each one-dimensional amplifier coupled to one of said feed points; said antenna system configured to one of receive and transmit a wave having a carrier frequency and an electric field vector, the terminus of which traces a nonlinear path within a plane transverse to an axis of wave propagation at an angular velocity corresponding to a rotation frequency between the carrier frequency and zero.