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PIER PIER B PIER C PIER M PIER Letters
2012-09-05
A Simple Local Approximation FDTD Model of Short Apertures with a Finite Thickness
By
Run Xiong,

    Dr. Run Xiong

    National Key laboratory on Electromagnetic Environment and electro-optical Engineering

    PLA University of Science and Technology

    China

    Homepage

Bin Chen,

    Dr. Bin Chen

    PLA University of Science and Technology

    China

    Homepage

Yunfei Mao,

    Dr. Yunfei Mao

    China Satellite Maritime Tracking and Control Department

    Yuan Wang

    China

    Homepage

Bo Li,

    Dr. Bo Li

    PLA University of Science and Technology

    China

    Homepage

Qi-Feng Jing

    Dr. Qi-Feng Jing

    PLA University of Science and Technology

    China

    Homepage

Progress In Electromagnetics Research, Vol. 131, 135-152, 2012
doi:10.2528/PIER12072201
Abstract
This paper brings forward a simple local approximation finite-difference time-domain (FDTD) method for the analysis of short apertures with a finite thickness. By applying the equivalence principle together with a simple local approximation, the varying field distribution is accurately derived. The updating equations for the slot field can be derived by casting the field distributions into the contour paths containing the aperture. The method has been applied to two problems and the results are compared with the high-resolution standard FDTD simulation and the measurement results. The accuracy of the proposed method is verified from the comparison of both the field distribution and the time-domain and frequency-domain slot coupling results. It is demonstrated that the local approximation is highly efficient and timesaving, and the present method is stable, numerically and computationally efficient.
Citation
Run Xiong, Bin Chen, Yunfei Mao, Bo Li, and Qi-Feng Jing, "A Simple Local Approximation FDTD Model of Short Apertures with a Finite Thickness," Progress In Electromagnetics Research, Vol. 131, 135-152, 2012.
doi:10.2528/PIER12072201
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