Patent ID: 8013792

Claim:
In an antenna system having at least two elements, an apparatus for minimizing antenna backside signal response and ambiguity, comprising: a means for causing a phase difference having a plurality of outputs; a signal path connecting each of said at least two elements to a corresponding output of said means for causing a phase difference; a means for causing a variable time delay disposed in at least one said signal path; a processor; and a software program; said software program comprising computer implementable instructions capable of being executed in said processor wherein, when executed, causes said processor to control said means for causing a variable time delay so as to iteratively cause at least one null to be positioned in the antenna pattern of said antenna in the direction of an undesired received signal; cause at least one null to be positioned in the antenna pattern of said antenna in the direction of a desired received signal; dither the position of said nulls according to a predetermined pattern; detect, at fixed weighting, amplitude modulations on signals received in the spatial direction of said undesired received signal and said desired received signal; tag strongly amplitude modulated signals as ambiguous artifacts; tag non amplitude modulated signals and weakly amplitude modulated signals as desirous; subtract said ambiguous artifacts from said desirous signals; and integrate the results of said subtraction for each iteration.