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Content Provider | IEEE Xplore Digital Library |
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Author | Xiaying Zhu Hasib, A. Nikolova, N.K. |
Copyright Year | 2007 |
Description | Author affiliation: McMaster Univ., Hamilton (Xiaying Zhu; Hasib, A.; Nikolova, N.K.) |
Abstract | We propose a novel technique to compute response gradients (Jacobians) from frequency-domain field solutions provided by high-frequency electromagnetic (EM) simulations. It is based on our recently developed self-adjoint sensitivity-analysis (SASA) approach where only one EM simulation suffices to obtain both the responses and their gradients in the optimizable-parameter space. Our novel technique exploits the computational efficiency of the SASA while adapting it to the system equations of the frequency-domain finite-difference (FDFD) method. There are three major advantages to this development: (a) the Jacobian computation is completely independent of the simulation engine, its grid and its system equations; (b) the implementation is straightforward and in the form of a post-processing algorithm operating on the exported field solution; (c) it is computationally very efficient-memory and computer-time requirements are negligible compared to those of the simulation itself. The proposed technique drastically reduces the overall time required by field-based optimization processes arising in design and inverse problems as compared to response Jacobians computed via response-level finite differences or parameter sweeps. Its accuracy is verified by comparisons with response-level central finite-difference derivative estimates. |
Starting Page | 165 |
Ending Page | 168 |
File Size | 320349 |
Page Count | 4 |
File Format | |
ISBN | 1424414482 |
DOI | 10.1109/ISSSE.2007.4294439 |
Language | English |
Publisher | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
Publisher Date | 2007-07-30 |
Publisher Place | Canada |
Access Restriction | Subscribed |
Rights Holder | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
Subject Keyword | Electromagnetic scattering Sensitivity analysis Scattering parameters Computational modeling Jacobian matrices Finite difference methods Grid computing Equations Computer simulation Frequency domain analysis finite-element method finite-difference frequency-domain method |
Content Type | Text |
Resource Type | Article |
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