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首页> 外文期刊>Aerospace science and technology >Effects of the resistive patch and the uniaxial anisotropic substrate on the resonant frequency and the scattering radar cross section of a rectangular microstrip antenna
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Effects of the resistive patch and the uniaxial anisotropic substrate on the resonant frequency and the scattering radar cross section of a rectangular microstrip antenna

机译：电阻贴片和单轴各向异性衬底对矩形微带天线谐振频率和散射雷达截面的影响

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摘要

The moment method technique is developed to examine the scattering properties of a rectangular microstrip patch antenna with non zero surface impedance. The boundary condition for the electric field is used to derive an integral equation for the electric current. The necessary terms for representing the surface resistance on the patch are derived and included in the integral equation in the form of a resistance matrix. The scattering radar cross section (RCS) of a microstrip antenna, including the effect of the surface resistance and the effect of a uniaxial substrate, is analysed. Effects of uniaxial anisotropy in the substrate on the complex resonant frequency of the microstrip patch antenna are also investigated. Numerical results show that the surface resistance significantly affects the RCS and radiation of the rectangular microstrip patches. Moreover, it is shown that the permittivity ε_z has a stronger effect on the resonant frequency, the radiation and the scattering radar cross section than the permittivity ε_x. It is worth noting that our calculated frequencies do not depend on the surface resistance.
机译：矩量法技术的发展是为了检查具有非零表面阻抗的矩形微带贴片天线的散射特性。电场的边界条件用于导出电流的积分方程。得出用于表示贴片上的表面电阻的必要项，并以电阻矩阵的形式包含在积分方程中。分析了微带天线的散射雷达横截面（RCS），包括表面电阻的影响和单轴基板的影响。还研究了衬底中单轴各向异性对微带贴片天线复谐振频率的影响。数值结果表明，表面电阻显着影响矩形微带贴片的RCS和辐射。此外，示出了介电常数ε_z比介电常数ε_x对谐振频率，辐射和散射雷达截面具有更大的影响。值得注意的是，我们计算出的频率不取决于表面电阻。

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