DGFM-enhanced theory of characteristic modes for finite antenna array analysis
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© 2017 IEEE. This work considers a method for including mutual coupling in the characteristic mode analysis (CMA) formulation of finite antenna array elements. The approach applies the domain Green's function method, i.e., a domain decomposition approach based on the method of moments, to extract an active impedance matrix for each array element. These impedance matrices model the active array environment for each antenna element and serve as input to an eigenvalue solver for the CMA. From here the eigencurrents and eigenvalues can be obtained that provide insight into the radiating properties of the elements in an active array environment.
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