Quiet zone generation via interference injections

SDS proposes a quiet zone generation technique by injection of the very interferences at low power level for cancellations. The interference mitigation technique consists of an optimization loop with iterative processing to maintain a quite zone dynamically over an area for a RCV array to operate in full duplex while the nearby XMIT apertures with strong RF leakage are in operation. The optimization loop has three cascaded functional blocks which, respectively, perform the following functions; (1) dynamic injection of the interference signals through an auxiliary XMIT array “distributed” near by the RCV array aperture, (2) feed back signals created by a diagnostic network with probes distributed over the RCV array aperture strategically, measuring the combined field distributions of the interfering signals and generating performance indexes, the “cost functions,” accordingly, and (3) iterative controls generated by an optimization processing using cost minimization algorithms based on the cost functions derived from currently measured data. The controls of the auxiliary array elements may be (a) the re-positioning of array elements for optimization of auxiliary array geometries -during the design phase, or (b) the updating of amplitude and phase weighting of the auxiliary array elements - for operation in real time.