With the demand for high-quality mobile information, the continuous leakage coaxial cable that can ensure the signal coverage has gradually attracted the attention of operators. Taking the vertical slotted leaky cable structure as an example, the full wave simulation model is built by using HFSS, and the equivalent circuit model of the slot is theoretically analyzed and extracted. Based on this model, the transmission, reflection and coupling characteristics of leaky cable are analyzed. Starting from the equivalent circuit model, the circuit parameter values in the equivalent circuit model and the coupling parameter values between leaky cables are calculated by using ABCD matrix: the theoretical calculation is very consistent with the full wave simulation, The correctness of the equivalent circuit is verified. The results show that compared with HFSS simulation, the equivalent circuit method proposed in this paper occupies less computing resources and greatly reduces the simulation time, and solves the problem of limited leaky cable length and too long time-consuming in HFSS simulation; At the same time, the equivalent parameters and the coupling parameters between leaky cables are calculated theoretically, which more intuitively reflects the coupling characteristics between leaky cables.
 

leaky coaxial cable,equivalent circuit model,full wave simulation,ABCD matrix,coupling parameter value,equivalent circuit mode