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RCS Reduction of an Object for an Arbitrarily-Polarized Signal Using an Active Microstrip Antenna

The radar cross section (RCS) of an object is reduced by using an active cancellation strategy, with a microstrip patch antenna used to radiate a cancelling signal. By using a square patch with two feeds, it is possible to eliminate the scattering from the object for an incident wave of arbitrary polarization, for a given frequency and fixed angle of incidence.