【作者】 朱军； 金志峰； 曹群生； 王毅；

【Author】 ZHU Jun;JIN Zhifeng;CAO Qunsheng;WANG Yi;College of Electronic and Information Engineering,Nanjing University of Aeronautics and Astronautics;

【机构】 南京航空航天大学电子信息工程学院；

【摘要】 多孔陶瓷天线罩是一种新型结构天线罩,具有透波系数高、介电常数低和损耗角小等优点。本文基于电磁全波仿真软件CST对多孔陶瓷天线罩进行建模,采用周期边界条件仿真1~18GHz多孔天线罩的散射参数,计算了在不同孔隙率下天线罩的透波率。根据仿真的散射系数,采用自由空间法与三次样条插值得到了任意孔隙率下天线罩的介电常数和损耗角。计算结果表明,随着孔隙率的不断增大,天线罩的透波率将会提高,介电常数和损耗角会逐渐减小。更多还原

【Abstract】 Porous ceramic radomes are new type of structural radomes,with advantages of high wave coefficient,low dielectric constant,low loss angle and so on.Based on the electromagnetic full-wave simulation software CST,a porous ceramic radome is modeled.The scattering parameters of the porous radome are simulated by applying the periodic boundary conditions,and the coefficient of the radome under different porosity is calculated for the frequency range of 1-18 GHz.According to the scattering coefficient of the simulation,the permittivity and loss angle of the radome under arbitrary porosity are obtained by using the free space method and the cubic spline interpolation.The results showed that the transmission efficiency(T2) of the radome increases with increasing the porosity and decreasing the values of dielectric constant and the loss angle.更多还原