迭代法分析圆环类微带行波天线的辐射特性

迭代法分析圆环类微带行波天线的辐射特性 Analyzing the Radiation Characteristic of Annular QuasiMicrostrip TravelingWave Antennas by Iterative Method 徐鹏 XU Peng 1 first-author 朱国强 ZHU Guoqiang 1 武汉大学电子信息学院,湖北,武汉,430072 武汉大学电子信息学院,湖北,武汉,430072 School of Electronic Information, Wuhan University School of Electronic Information, Wuhan University 利用圆环类微带行波天线的辐射功率与等效行波磁流衰减常数之间的自洽关系 ,导出了计算衰减常数的迭代方程 ;为加快迭代速度 ,将辐射积分中的格林函数展开成柱面波函数 ,得到快速收敛的级数和 最后给出了方向图的计算曲线 ,与实验结果对比吻合良好 ,表明此方法模拟圆环类微带行波天线辐射特性的有效性 An integral equation about the attenuation constant of the equivalent travelingwave magnetic current is derived from the selfconsistency between the attenuation constant and the radiated power. To quicken iterative pace, the Green’s function in the integral equation is unfolded by cylindrical functions, then the complex integral is changed into the sum of series convenient for iterative computation. Lastly, the calculated curve of the directional pattern is presented, which matches the experimental result well. That indicates it is very effective to simulate the radiation characteristic of the kind of antenna by this method. 迭代法 行波磁流 衰减常数 iterative method travelingwave magnetic current attenuation constant TN820 国家水利部长江水利委员会资助项目;国防科技重点实验室基金!资助项目 （99JS93 1 2 JW1 2 0 4 ） 2001-01-01 2021-04-01 1