Analytical Adjoint Sensitivity Formula for the Scattering Parameters of Metallic Structures

作者：Dadash M Sadegh^*; Nikolova Natalia K; Bandler John W

来源：IEEE Transactions on Microwave Theory and Techniques, 2012, 60(9): 2713-2722.

DOI：10.1109/TMTT.2012.2205937

• Adjoint-variable method
• computer-aided design (CAD)
• finite-difference method
• finite-difference time-domain (FDTD) method
• finite-element method (FEM)
• method of moments (MoM)
• response Jacobians
• sensitivity analysis

A novel sensitivity-analysis method is proposed to compute the S-parameter Jacobian with respect to metallic shape parameters. The formulation is analytical and is derived from Maxwell%26apos;s equations directly. It is independent of the field solution method and the respective system matrix. It requires only the field solution on the object surface. The computation is a post-process and its overhead is negligible in comparison with a full-wave simulation. The method provides exact sensitivities. It is validated by the sensitivity analysis of microwave structures where the field solution is provided by commercial solvers based on the finite-element method, the method of moments, and the finite-difference time-domain method.

• 出版日期2012-9