Sensitivity Analysis of Microwave Circuits Using Parameterized Model Order Reduction Techniques

This paper presents an efficient technique to calculate sensitivities of microwave structures with respect to network design parameters. The proposed technique uses a parametric reduced order model derived from the finite element method discretization of the vector wave equation to solve the original network and an adjoint variable method to calculate sensitivities. An important feature of the proposed method is that the solution of the original network as well as sensitivities with respect to any parameter is obtained from the solution of the reduced order model.