Closed-form metamaterial blueprints for electromagnetic masking of arbitrarily shaped convex PEC objects

In this letter, we derive closed-form expressions of constitutive tensors (blueprints) for masking of arbitrarily shaped convex PEC objects. The derivation is based on the metric invariance of Maxwell equations, as recently explored for derivation of metamaterial blueprints for electromagnetic cloaking. The present masking layer can be seen as a partial cloaking layer, whose effectiveness depends on the geometry of the masked object.