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Time-domain sensitivity analysis of planar structures using first-order one-way wave-equation boundaries. (English) Zbl 1180.78030

In this paper the authors apply an adjoint variable method for time domain transmission line modelling, previously developed in a series of papers by the authors, to do sensitivity analysis of microstrip and patch antennas with respect to the designs parameters. In this way all sensitivities for the objective function can be computed using only the original and adjoint simulation compared with standard finite difference approximations which require two extra simulations per parameter. To handle these antennas, the method can treat both dispersive boundaries and dielectric structures. All physics are expressed as matrix operations on state vectors and the adjoint equation is derived by analyzing the discrete time stepping scheme obtained from these relations in combination with the objective function to be differentiated.

MSC:

78A50 Antennas, waveguides in optics and electromagnetic theory
78M99 Basic methods for problems in optics and electromagnetic theory
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References:

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