摘要
针对航空电子系统高强度辐射场防护问题,利用场线耦合理论对架空单线和平行双线由于平面波照射而产生的开路端电压进行了分析。分析外场对传输线的耦合机理,分别得到架空单线与平行双线的开路电压的数学表达式。最后仿真分析得到,对于一定的传输线物理参数,单线与双线的开路端电压随频率呈现周期性变化、随非开路端负载阻值的增加而减小直至趋近定值,在水平极化入射场激励下耦合电压最小。
Aiming at the problem of high intensity radiation field protection in avionics system,the open circuit terminal voltage of single and parallel double lines caused by plane wave irradiation is analyzed by field to wire coupling theory.The coupling mechanism of the field to the wire is analyzed,and the mathematical expressions of the open circuit voltage of the single line and the parallel double lines are obtained respectively.Finally,the simulation analysis shows that for certain physical parameters of the transmission line,the voltage at the open terminal of single line and double lines changes periodically with frequency,decreases with the increase of load resistance at the other terminal until reaching the fixed value,and the coupling voltage is the minimum under the excitation of horizontal polarization incident field.
基金
工信部资助项目:MJ-2017-F-11。
关键词
航空电子系统
场线耦合
单线
平行双线
开路电压
仿真
avionics system
field to wire coupling
single line
parallel double lines
open circuit voltage
simulation
