To solve the coupling effect of multiconductor transmission lines excited by external electromagnetic wave, the modified method of characteristics is proposed. The modified method of characteristics which can compute ...To solve the coupling effect of multiconductor transmission lines excited by external electromagnetic wave, the modified method of characteristics is proposed. The modified method of characteristics which can compute the terminal induced voltages excited by the external electromagnetic wave when the terminal networks or intereonnection networks contain the dynamic elements is introduced. The simulation results indicate that the modified method can analyze the terminal induced voltages when the terminal networks or the interconnection networks contain the dynamic elements excited by the external electromagnetic wave. And the results are compared with the results acquired by FDTD method, the two results are completely same. So one effective modified method is implemented to compute the transmission lines.展开更多
为提高系统抗强电磁脉冲毁伤能力,采用时域有限差分法(Finite Difference Time Domain,FDTD)和通用电路仿真器(SPICE)相结合的协同仿真方法,以圆柱腔内由单导线、双绞线、普通双线和同轴线组成的线束为研究对象,重点研究了导线类型、导...为提高系统抗强电磁脉冲毁伤能力,采用时域有限差分法(Finite Difference Time Domain,FDTD)和通用电路仿真器(SPICE)相结合的协同仿真方法,以圆柱腔内由单导线、双绞线、普通双线和同轴线组成的线束为研究对象,重点研究了导线类型、导线间距、捆扎和RC滤波电路对耦合特性的影响。结果表明:耦合系数受腔体和传输线的双重影响,同轴线耦合系数较其他两类线缆降低约40 dB;线间相互屏蔽是捆扎降低耦合系数的主要原因;随着导线间距增大,耦合系数幅值增大;RC滤波电路是降低电磁耦合的有效手段。所得结论对电子系统进行抗电磁脉冲加固具有重要意义。展开更多
The per-unit-length capacitance parameter of multiconductor transmission line （MTL） is commonly extracted with indirect matrix transform method, which is complex and time-consuming. To solve the problem, an improved...The per-unit-length capacitance parameter of multiconductor transmission line （MTL） is commonly extracted with indirect matrix transform method, which is complex and time-consuming. To solve the problem, an improved method to directly compute the MTL capacitance is proposed, which can be applied in the transmission line structure with arbitrary shaped cross-section and arbitrary separate distance. This method imports voltage conversions and matrix operations to simplify the complexity, improves computational efficiency by about 600% with results as accurate as previous method. The novel method presents a clear charge distribution map of MTL, whereas precious method will experience a tortuous process to get charge distribution.展开更多
文摘To solve the coupling effect of multiconductor transmission lines excited by external electromagnetic wave, the modified method of characteristics is proposed. The modified method of characteristics which can compute the terminal induced voltages excited by the external electromagnetic wave when the terminal networks or intereonnection networks contain the dynamic elements is introduced. The simulation results indicate that the modified method can analyze the terminal induced voltages when the terminal networks or the interconnection networks contain the dynamic elements excited by the external electromagnetic wave. And the results are compared with the results acquired by FDTD method, the two results are completely same. So one effective modified method is implemented to compute the transmission lines.
文摘为提高系统抗强电磁脉冲毁伤能力,采用时域有限差分法(Finite Difference Time Domain,FDTD)和通用电路仿真器(SPICE)相结合的协同仿真方法,以圆柱腔内由单导线、双绞线、普通双线和同轴线组成的线束为研究对象,重点研究了导线类型、导线间距、捆扎和RC滤波电路对耦合特性的影响。结果表明:耦合系数受腔体和传输线的双重影响,同轴线耦合系数较其他两类线缆降低约40 dB;线间相互屏蔽是捆扎降低耦合系数的主要原因;随着导线间距增大,耦合系数幅值增大;RC滤波电路是降低电磁耦合的有效手段。所得结论对电子系统进行抗电磁脉冲加固具有重要意义。
基金supported by the National Natural Science Foundation of China (60671055)
文摘The per-unit-length capacitance parameter of multiconductor transmission line （MTL） is commonly extracted with indirect matrix transform method, which is complex and time-consuming. To solve the problem, an improved method to directly compute the MTL capacitance is proposed, which can be applied in the transmission line structure with arbitrary shaped cross-section and arbitrary separate distance. This method imports voltage conversions and matrix operations to simplify the complexity, improves computational efficiency by about 600% with results as accurate as previous method. The novel method presents a clear charge distribution map of MTL, whereas precious method will experience a tortuous process to get charge distribution.
