Research on the influence scope of periodic slots on leaky coaxial cables

Calculation of the radiation field is an important work in the novel leaky coaxial cable (LCX) design. By analyzing the influence scope of the slots on the LCX, the minimum length that should be employed in the calculation of LCX can be determined. In this paper, a method of finding the influence scope of slots on LCX is proposed. In this method, the influence scope of slot is studied by analyzing the change of near field distribution when the cable length increases. After the influence scope is gotten, the minimum length of the cable is also obtained. In addition, the radiation field distribution of a single period is also given, which can also be used to determine the influence scope of slots.