Patent ID: 11894613
Assignee: NOTCH, INC.
Field: Telecommunications (Electrical engineering)
Classification: CPC H | IPC H

Claim 5:
6. A metamaterial system for integration into an object to cause adjustment of a radar profile of the object, the system comprising:
a set of metamaterial structures including a first metamaterial structure configured to be controllably reflective, so as to operate in a first mode wherein it is reflective and in a second mode wherein it is transmissive; and a second metamaterial structure configured to be absorptive at an external radar frequency f1;
wherein the first metamaterial structure overlies the second metamaterial structure;
a control signal generator coupled to the first metamaterial structure and configured to cause the first metamaterial structure to operate in the transparent mode, the control signal generator further configured to control an extent of transmissivity of the first metamaterial structure, at the external radar frequency f1, in combination with absorption by the second metamaterial structure, so as to endow the object with a customized radar cross-section that is potentially larger, or smaller, than that of the object without the metamaterial system, or to render the object invisible to radar.