Fast wideband scattering analysis of large-scale finite-sized periodic arrays with planar cells using ASED basis function and interpolation technique

ABSTRACT

In this paper, the accurate sub-entire-domain (ASED) basis function method is combined with the interpolation technique to efficiently analyze the wideband electromagnetic scattering from the large-scale finite-sized periodic arrays with planar cells. Comparing with the conventional method of moments (MoM), the ASED basis function method can tremendously reduce the number of unknowns. Thus, the computational complexity can be tremendously reduced. It is a single-frequency technique. The impedance matrix needs to be calculated repeatedly at each frequency. The interpolation technique can speed up the wideband simulation because the impedance matrices can be efficiently obtained using the interpolation technique. To validate the accuracy and efficiency of the proposed method, several numerical examples are carried out. Simulation results show that the results of the proposed technique agree well with those of the ASED bases. Both the CPU time and the memory cost are significantly reduced by using the proposed method.

KEYWORDS:

• Finite-sized periodic structure
• method of moments
• accurate sub-entire-domain (ASED) basis function
• wideband
• interpolation technique

Additional information

Funding

This work was supported by National Natural Science Foundation of China [grant number 41676167, 51475133].

Notes on contributors

Wei Jie Fu

Wei Jie Fu received the B.S. degree in electronic engineering from Jinggangshan University, Ji’an, China, in 2016. Currently, he is working toward the M.Eng degree. His research interest is computational electromagnetics.

Ping Du

Ping Du received the B.S. degree in electronic engineering from Anhui Normal University, Wuhu, China, in 2002, the M.S. degree in electrical engineering from Southwest Jiaotong University, Chengdu, China, and the Ph. D degree in radio physics from University of Electronic Science and Technology of China, Chengdu, China, in 2009. From 2009 to 2011, he was a research scientist with Temasek Laboratories , National University of Singapore, Singapore. Since 2011, he has been with Hefei University of technology, Hefei, China, as an assistant professor. His research interests include computational electromagneticcs and antenna design.

Rong Chuang Hu

Rong Chuang Hu received the B. S. degree from Huainan Normal university, Huainan, China in 2017. His research interest is computational electromagnetics. Currently, he is working toward the M.S. degree in electronic engineering, Hefei University of Technology, Hefei, China.