Research On Energy Selective Surface And Analysis Of Antenna Integrated Design

The development and application of the strong electromagnetic pulse weapon is the hotspot of military weapon research,which puts forward the very high request to the electromagnetic protection of information equipment.As an adaptive protective device with switching characteristics,Energy selective surface(ESS)can not only ensure the normal receiving and sending of equipment signals,but also effectively block strong electromagnetic fields.It is an intelligent and effective electromagnetic protection method,which has attracted more and more attention in recent years.Based on the theoretical analysis method and the practical application requirements,this paper studies the research methods of energy selection surface,structure design and influence on the performance of the antenna.The main work of this paper is as follows:1.Equivalent circuit model of energy selection surface is established by using equivalent circuit method.Electromagnetic characteristic parameters are extracted by equivalent medium method.From the view of electromagnetic field and electric circuit,the reflection and transmission principle of energy selective surface steady state are analyzed,and to guide the improvement of energy selection unit cell structure.The results of equivalent method and full wave simulation are compared.Simulation of complex model and finite periodic structure is carried out by hybrid field-circuit simulation to better analyze the transient response.2.A low-frequency broadband single / double-layer energy-selective radome is designed for the quaternary microstrip patch antenna array,and the angular stability of the cell structure is determined.The equivalent circuit method and the equivalent medium method are used to analyze the principle and performance of the radome at steady state,and the transient response analysis is carried out by hybrid field-circuit simulation.The influence of the radome on the performance of the antenna is analyzed,and the transient response of the integrated structure of the radome and the antenna is simulated and analyzed.The radome and antenna are fabricated and tested.3.The energy selection surface of the ring gap structure cell with band-pass characteristic is designed for the monopole antenna,and the equivalent circuit model is established.According to the structural characteristics of the antenna,the conical quasi-periodic structure radome is designed,and the conformal radome is modeled and simulated by hybrid field-circuit simulation.The effect of the radome on the performance of the antenna is studied.The influence of the radome on the radar cross section(RSC)is analyzed.