Electromagnetic Homogenization: the Uncertainty Principle and Its Numerical Verification
نویسندگان
چکیده
The effective permeability of electromagnetic metamaterials can deviate significantly from unity at high frequencies – an intriguing property not available in natural materials. However, we show both analytically and numerically that this artificial magnetism has limitations: the stronger the magnetic response, the less accurate the homogenization. New computational aspects of the paper include high-order Trefftz difference schemes and highly accurate computation of Bloch modes on nonorthogonal grids, high-order absorbing boundary conditions, and numerical implementation of new Trefftz homogenization on rhombic lattices.
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