TY - JOUR
T1 - Rapid Numerical Analysis of Electrically Large PEC Platforms with Local Variations via a Platform Green's Function Method
AU - Gao, Hong Wei
AU - Wang, Shu
AU - Sheng, Xin Qing
AU - Peng, Zhen
N1 - This work was supported in part by the National Natural Science Foundation of China under Grant 61801023 and Grant 62171027 and in part by the Beijing Institute of Technology Research Fund Program for Young Scholars.
PY - 2022/10/1
Y1 - 2022/10/1
N2 - The aim of this article is to perform a rapid electromagnetic (EM) analysis of large perfectly electric conducting (PEC) platforms with local variations. Such problems often require many-query simulations to navigate complex parameter spaces and thus quickly become computationally expensive. The proposed work starts with a stationary-variable domain decomposition, where the computational domain is decomposed into large fixed parts and small portions with local variations. Subsequently, we introduce a separable and compressible platform Green's function at the outer surface of those variable subdomains in an upfront offline calculation. Once obtained, the online computational complexity does not depend on the size of the in situ platform. With the validation of numerical results, we conclude that the proposed work has the potential to greatly speed up the online evaluation of local designs and optimizations compared to the brute-force computation.
AB - The aim of this article is to perform a rapid electromagnetic (EM) analysis of large perfectly electric conducting (PEC) platforms with local variations. Such problems often require many-query simulations to navigate complex parameter spaces and thus quickly become computationally expensive. The proposed work starts with a stationary-variable domain decomposition, where the computational domain is decomposed into large fixed parts and small portions with local variations. Subsequently, we introduce a separable and compressible platform Green's function at the outer surface of those variable subdomains in an upfront offline calculation. Once obtained, the online computational complexity does not depend on the size of the in situ platform. With the validation of numerical results, we conclude that the proposed work has the potential to greatly speed up the online evaluation of local designs and optimizations compared to the brute-force computation.
KW - Antennas
KW - Domain decomposition method (DDM)
KW - Green's function methods
KW - Iron
KW - Manganese
KW - Matrix decomposition
KW - Read only memory
KW - Surface treatment
KW - finite element-boundary integral (FE-BI)
KW - many-query simulations
KW - platform Green’s function (PGF)
KW - reduced order modeling (ROM)
KW - reduced-order model (ROM)
KW - platform Green's function (PGF)
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U2 - 10.1109/TAP.2022.3181016
DO - 10.1109/TAP.2022.3181016
M3 - Article
AN - SCOPUS:85132746979
SN - 0018-926X
VL - 70
SP - 9544
EP - 9556
JO - IEEE Transactions on Antennas and Propagation
JF - IEEE Transactions on Antennas and Propagation
IS - 10
ER -