摘要
提出了一种简化的同轴馈电模型用于分析同轴探针馈电的微带天线。在时域有限差分方法(FDTD)中对于同轴馈电模型一般采用一维电压电流递推方式引入入射波形;同时结合细导线模型模拟同轴线馈电。需要对接地板同轴线接口处的电场值进行特别处理,过程较复杂。简化方法仅采用细导线模型作为馈电端口,在接地板与细导线探针间加电压源激励产生入射波形。省略了同轴线的建模及接口处电场值的处理过程,使得模型更加紧凑。数值仿真验证了该算法的有效性和准确性。
In order to analyze the coaxial line feeding microstrip patch antenna using FDTD method, a simpli- fied feeding model is presented. Usually the patch antenna is simulated by one-dimensional transmission line model and thin wire model. But the electric field vector at the joint of the coaxial line and ground plate should be special treated. By the presenting method, only the thin wire model is adopted and the source excited between co- axial line and ground plate by type of line voltage source. It makes the model more compact and analyzing simpler. Numerical results indicate that the simple method is valid and accurate.
出处
《科学技术与工程》
北大核心
2013年第31期9357-9360,共4页
Science Technology and Engineering
基金
河北省科技支撑计划项目(112135111)资助
