Near field uniformity of IR/MW beam combiner

Hui Yan; Yi Tian; Xin Wang; Zhuo Li

doi:10.15918/j.tbit1001-0645.2016.10.017

Near field uniformity of IR/MW beam combiner

Hui Yan, Yi Tian, Xin Wang, Zhuo Li^*

^*Corresponding author for this work

School of Optics and Photonics

Beijing Institute of Technology

Research output: Contribution to journal › Article › peer-review

1 Citation (Scopus)

Abstract

The method of moment (MoM) is inefficient in near field calculation of electrically large dielectric object, so that the aperture field integration method (AFIM) is employed for evaluating near field uniformity of IR/MW beam combiner. Compared to MoM, the calculation error of AFIM was less than 10% while the calculation time was shortened from hours to a few seconds. Standard deviation of electric field distribution was chosen as the evaluation criteria, and calculation showed that, the near field uniformity of beam combiner was a negative power function of D²/λL, where D was the size of beam combiner, L was the distance of calculated field, and λ was the wave length. The negative power function was used for optimization of size and shape of beam combiner. Optimized beam combiner was validated by MoM and the calculation error was less than 10%.

Original language	English
Pages (from-to)	1079-1084
Number of pages	6
Journal	Beijing Ligong Daxue Xuebao/Transaction of Beijing Institute of Technology
Volume	36
Issue number	10
DOIs	https://doi.org/10.15918/j.tbit1001-0645.2016.10.017
Publication status	Published - 1 Oct 2016

Keywords

Aperture field integration method
Beam combiner
Method of moment
Near field calculation

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10.15918/j.tbit1001-0645.2016.10.017

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Yan, H., Tian, Y., Wang, X., & Li, Z. (2016). Near field uniformity of IR/MW beam combiner. Beijing Ligong Daxue Xuebao/Transaction of Beijing Institute of Technology, 36(10), 1079-1084. https://doi.org/10.15918/j.tbit1001-0645.2016.10.017

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abstract = "The method of moment (MoM) is inefficient in near field calculation of electrically large dielectric object, so that the aperture field integration method (AFIM) is employed for evaluating near field uniformity of IR/MW beam combiner. Compared to MoM, the calculation error of AFIM was less than 10% while the calculation time was shortened from hours to a few seconds. Standard deviation of electric field distribution was chosen as the evaluation criteria, and calculation showed that, the near field uniformity of beam combiner was a negative power function of D2/λL, where D was the size of beam combiner, L was the distance of calculated field, and λ was the wave length. The negative power function was used for optimization of size and shape of beam combiner. Optimized beam combiner was validated by MoM and the calculation error was less than 10%.",

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AU - Tian, Yi

AU - Wang, Xin

AU - Li, Zhuo

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N2 - The method of moment (MoM) is inefficient in near field calculation of electrically large dielectric object, so that the aperture field integration method (AFIM) is employed for evaluating near field uniformity of IR/MW beam combiner. Compared to MoM, the calculation error of AFIM was less than 10% while the calculation time was shortened from hours to a few seconds. Standard deviation of electric field distribution was chosen as the evaluation criteria, and calculation showed that, the near field uniformity of beam combiner was a negative power function of D2/λL, where D was the size of beam combiner, L was the distance of calculated field, and λ was the wave length. The negative power function was used for optimization of size and shape of beam combiner. Optimized beam combiner was validated by MoM and the calculation error was less than 10%.

AB - The method of moment (MoM) is inefficient in near field calculation of electrically large dielectric object, so that the aperture field integration method (AFIM) is employed for evaluating near field uniformity of IR/MW beam combiner. Compared to MoM, the calculation error of AFIM was less than 10% while the calculation time was shortened from hours to a few seconds. Standard deviation of electric field distribution was chosen as the evaluation criteria, and calculation showed that, the near field uniformity of beam combiner was a negative power function of D2/λL, where D was the size of beam combiner, L was the distance of calculated field, and λ was the wave length. The negative power function was used for optimization of size and shape of beam combiner. Optimized beam combiner was validated by MoM and the calculation error was less than 10%.

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KW - Near field calculation

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Near field uniformity of IR/MW beam combiner

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Keywords

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