Patent ID: 8085199
Filing Date: 2011-12-27
Classification: H04B

Abstract:
1. An antenna structure comprises: an antenna array operably coupled to receive an inbound wireless signal; a plurality of phase shifters operably coupled to the antenna array and to produce a plurality of phase shifted inbound wireless signals; a matrix module operably coupled to beamform the plurality of phase shifted inbound wireless signals to produce a plurality of beamformed and phase shifted inbound wireless signals; a selection module operably coupled to output the one or more of the plurality of beamformed and phase shifted inbound wireless signals; a direction coupling module operable to generate a representation of the plurality of phase shifted inbound wireless signals; an inversion module operably coupled to invert a phase shifted inbound wireless signal of the representation of the plurality of phase shifted inbound wireless signal to produce an inverted phase shifted inbound wireless signal; a second matrix module operably coupled to beamform the inverted phase shifted inbound wireless signal and remaining phase shifted inbound wireless signals of the representation of the plurality of phase shifted inbound wireless signals to produce a second plurality of beamformed and phase shifted inbound wireless signals; and a control module to determine an angular position of a source of the inbound wireless signal based on at least one of the plurality of beamformed and phase shifted inbound wireless signals and at least one of the second plurality of beamformed and phase shifted inbound wireless signals.