TY - JOUR
T1 - Near field uniformity of IR/MW beam combiner
AU - Yan, Hui
AU - Tian, Yi
AU - Wang, Xin
AU - Li, Zhuo
N1 - Publisher Copyright:
© 2016, Editorial Department of Transaction of Beijing Institute of Technology. All right reserved.
PY - 2016/10/1
Y1 - 2016/10/1
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%.
KW - Aperture field integration method
KW - Beam combiner
KW - Method of moment
KW - Near field calculation
UR - http://www.scopus.com/inward/record.url?scp=84995775626&partnerID=8YFLogxK
U2 - 10.15918/j.tbit1001-0645.2016.10.017
DO - 10.15918/j.tbit1001-0645.2016.10.017
M3 - Article
AN - SCOPUS:84995775626
SN - 1001-0645
VL - 36
SP - 1079
EP - 1084
JO - Beijing Ligong Daxue Xuebao/Transaction of Beijing Institute of Technology
JF - Beijing Ligong Daxue Xuebao/Transaction of Beijing Institute of Technology
IS - 10
ER -