Apparatus and method of generating quiet zone by cancellation-through-injection techniques

A system of generating injection for mitigating interference over a target zone, comprising:

• multiple injection elements configured to radiate a signal to said target zone, wherein said injection elements are distributed around said target zone, wherein two of said injection elements are distributed opposite to each other with respect to said target zone;
• a beam forming network arranged upstream of said injection elements, wherein said beam forming network is configured to perform a weighting vector for an input of said beam forming network;
• and
• a diagnostic network configured to measure a combined field of said interference and said signal, and update said weighting vector based on said combined field.

A system of generating injection for mitigating interference over a target zone, comprising:

• an injection element configured to radiate a signal to said target zone;
• a beam forming network arranged upstream of said injection element, wherein said beam forming network is configured to perform a weighting vector for an input of said beam forming network;
• and
• a diagnostic network configured to measure a combined field of said interference and said signal over said target zone, generate a total cost based on a sum of multiple cost functions related to said combined field, measure a gradient of said total cost with respect to said weighting vector and update said weighting vector based on said gradient.