Coupling of electromagnetic field to transmission line above the composite plate
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摘要: 利用单层均匀模型等效非均匀碳纤维复合材料，获得等效电磁参数，进而采用基于全波分析方法的仿真软件研究了碳纤维的排列方向以及入射波参数对传输线终端负载感应电流的影响。结果表明，当导线与碳纤维方向平行时，其场线耦合规律与同电导率导电板上的场线耦合变化规律基本一致，且负载感应电流大于导线与碳纤维正交时的感应电流。当电磁波垂直于复合材料板入射时，负载感应电流大于同等条件下电磁波平行入射时的感应电流。Abstract: The carbon fiber reinforced composite (CFRC) plate was represented by a single-layer homogenous anisotropic model, and then a full wave analysis based software was employed to simulate the induced current on termination loads of the transmission line composed of a conducting wire and the composite plate. Results show that variation of the induced current is similar to that of the conducting wire above the lossy homogenous conducting plate with same conductivity when the wire is parallel to the carbon fibers, and the induced current magnitude is higher than that of the wire orthogonal to the carbon fibers. Moreover, the induced current for the normal incidence of electromagnetic wave to the composite plate is greater than the current for the wave propagates along the plate, with the electric field parallel to the wire in both cases.
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图 4 不同入射情况下计算模型a终端负载Z2上的感应电流
Figure 4. Induced current on the termination load Z2 in terms of incident angle for Model a
图 5 不同入射情况下计算模型b终端负载Z2上的感应电流
Figure 5. Induced current on the termination load Z2 in terms of incident angle for Model b
图 6 电磁波平行于传输线平面入射时两种模型Z1与Z2上感应电流的比较
Figure 6. Comparison of induced currents on the load Z1 and Z2 between Model a and Model b for different incidence
图 7 两种模型中负载感应电流与相同入射和结构条件下有耗导电板上导线终端负载感应电流的比较(电磁波平行于传输线平面入射)
Figure 7. Comparison of induced current of the conducting wire above the CFRC to the wire above the lossy conducting plate for parallel incidence
图 8 两种模型中负载感应电流与相同入射和结构条件下有耗导电板上导线终端负载上感应电流的比较(电磁波垂直于传输线入射)
Figure 8. Comparison of induced current of the conducting wire above the CFRC to the wire above the lossy conducting plate for vertical incidence
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