Journal
IEEE TRANSACTIONS ON ANTENNAS AND PROPAGATION
Volume 64, Issue 5, Pages 1963-1968Publisher
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/TAP.2016.2521880
Keywords
Adjoint variable method (AVM); cloaking; optimization; transmission line matrix (TLM) method
Funding
- Natural Sciences and Engineering Research Council of Canada (NSERC) [RGPIN 249780-2011]
- NSERC DAS Award
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We propose an effective approach for optimal wideband cloaking of objects with arbitrary shapes exploiting adjoint sensitivity analysis. Our method optimizes the voxel-by-voxel constitutive parameters of an anisotropic cloak resulting in a large number of optimizable parameters. The associated sensitivities of a wideband cloaking objective function are efficiently estimated using our in-house anisotropic adjoint variable method (AVM) simulator. Only one adjoint simulation is needed regardless of the number of required sensitivities. A gradient-based optimization algorithm utilizes the available sensitivity information to iteratively improve the wideband cloaking objective function and to determine the constitutive parameters of the optimal cloak.
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