Comparisons of Simulated and Measured Electric Field Distributions in a Cabin of a Simplified Scale Car Model
Comparisons of Simulated and Measured Electric Field Distributions in a Cabin of a Simplified Scale Car Model
复制标题
简化比例汽车模型车厢内的模拟和测量电场分布比较
DOI：
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发表时间：
2007
影响因子：
0.7
通讯作者：
N. Michishita
中科院分区：
文献类型：
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作者：
S. Horiuchi;Kunihiko Yamada;Shingo Tanaka;Yoshihide Yamada;N. Michishita
在设计汽车中使用的无线通信系统时，必须仔细确定汽车内部和外部的电场。本文介绍了简化比例汽车模型车厢内电场分布的有效仿真方法和精确测量方法。为了便于测量，采用了1/3汽车模型。采用 2859MHz 的缩放频率，即 953MHz 的 3 倍。通过使用利用多级快速多极法的力矩法模拟器，可以在个人计算机上进行计算。为了判断仿真结果的准确性，需要保证仿真输出根据线段尺寸（三角形边长）的变化而收敛。还显示了仅金属体和带有窗玻璃的金属体情况下的模拟载荷。测量时采用光电场探头，尽量减少金属馈电电缆造成的干扰；获得精确的测量结果。测量结果和模拟结果的比较显示出非常好的一致性，这证实了计算结果的准确性。显示了汽车模型中的 3 维电场分布，并阐明了 3 维驻波形状。此外，还显示了计算和测量的汽车模型的辐射方向图，从而阐明了汽车周围的总电场分布。
The electric fields inside and outside a car must be carefully determined when designing a wireless communication system to be employed in the car. This paper introduces an effective simulation method and a precise measurement method of electric field distributions in a cabin of a simplified scale car model. A 1/3 car model is employed for ease of measurement. The scaled frequency of 2859MHz, 3 times 953MHz, is employed. The use of a moment method simulator utilizing the multilevel fast multipole method allows calculations to be performed on a personal computer. In order to judge the accuracy of simulation results, convergence of simulation output in accordance with segment size (triangle edge length) changes is ensured. Simulation loads in the case of metallic body only and a metallic body with window glass are also shown. In the measurements, an optical electric field probe is employed so as to minimize the disturbances that would otherwise be caused by metallic feed cable; precise measurement results are obtained. Comparisons of measured and simulated results demonstrate very good agreement which confirms the accuracy of the calculated results. 3-dimensional electric field distributions in the car model are shown and 3-dimensional standing wave shapes are clarified. Moreover, calculated and measured radiation patterns of the car model are shown so the total electric field distributions around a car are clarified.