TY - GEN
T1 - Second-order time-domain adjoint sensitivity analysis exploiting TLM
AU - Negm, Mohamed H.
AU - Bakr, Mohamed H.
AU - Nikolova, Natalia
PY - 2012
Y1 - 2012
N2 - A novel adjoint variable method (AVM) for estimating second-order sensitivities with time-domain TLM is introduced. For a structure with n designable parameters, the complete Hessian matrix is estimated using O(n) extra simulations as compared to O(n 2) using traditional finite difference approaches. Our approach is illustrated through estimating the second-order sensitivities with respect to dimensions and material properties of a dielectric discontinuity. A very good match is achieved when compared with the more expensive finite difference approaches.
AB - A novel adjoint variable method (AVM) for estimating second-order sensitivities with time-domain TLM is introduced. For a structure with n designable parameters, the complete Hessian matrix is estimated using O(n) extra simulations as compared to O(n 2) using traditional finite difference approaches. Our approach is illustrated through estimating the second-order sensitivities with respect to dimensions and material properties of a dielectric discontinuity. A very good match is achieved when compared with the more expensive finite difference approaches.
KW - Adjoint variable method (AVM)
KW - Computer-aided design (CAD)
KW - Electromagnetic modeling
KW - Optimization
KW - Sensitivity analysis
KW - Transmission-line matrix methods (TLM)
UR - https://www.scopus.com/pages/publications/84866777579
U2 - 10.1109/MWSYM.2012.6259400
DO - 10.1109/MWSYM.2012.6259400
M3 - Conference contribution
AN - SCOPUS:84866777579
SN - 9781467310871
T3 - IEEE MTT-S International Microwave Symposium Digest
BT - IMS 2012 - 2012 IEEE MTT-S International Microwave Symposium
ER -