关于扩展泄漏同轴电缆带宽的研究

Research on expanding the bandwidth of leaky coaxial cable

根据基本电磁理论,从理论上对泄漏同轴电缆(以后简称LCX)的辐射模式进行了分析,推导出其辐射场的数学表达式.根据单模辐射产生的条件,讨论了怎样抑制高次模辐射来扩展单模辐射的带宽.之后,探讨了一种扩展八字开槽泄漏同轴电缆带宽的方法,为泄漏同轴电缆用于超宽带通信提供了一种可实践的途径.该结论对于设计应用于超宽带通信的泄漏同轴电缆有着重要意义.

Starting from the basic electromagnetic theory, this paper theoretically analyzed radiation modes of leaky coaxial cable （hereinafter LCX in short） and deduced mathematical expression of its radiation fields. The problem was discussed that how to restrain the high mode radiation field of LCX and expand its single mode radiation band based on the conditions that only single mode radiation generated. After that, a method was explored for expanding the single mode radiation bandwidth of LCX with zigzag slots, providing a practical approach to apply LCX in ultra wide-band communication. The conclusion is significant for the design and use of LCX application in ultra wideband communication.