CAJ | 학술논문

采用高阶矩量法研究对数周期天线的电磁特性;首先借助广义导线截锥体几何建模技术对天线进行线剖分,再依据电磁场边界条件在天线表面建立电场积分方程,最后用基于混合域基函数的高阶矩量法对其离散求解;仿真验证表明,此方法简单易行、结果精确,与传统的分域基矩量法相比,大大减少了未知数个数,而且不失精度;高阶矩量法是一种切实可行的高效电磁场数值计算方法,在分析相关辐射问题时具有一定的应用价值和理论意义.
채용고계구량법연구대수주기천선적전자특성;수선차조엄의도선절추체궤하건모기술대천선진행선부분,재의거전자장변계조건재천선표면건립전장적분방정,최후용기우혼합역기함수적고계구량법대기리산구해;방진험증표명,차방법간단역행、결과정학,여전통적분역기구량법상비,대대감소료미지수개수,이차불실정도;고계구량법시일충절실가행적고효전자장수치계산방법,재분석상관복사문제시구유일정적응용개치화이론의의.
The electromagnetic (EM) characteristics of log-periodic antenna (LPDA) are studied by adopting high order Method of Moment (MoM). Firstly, the antenna is segmented via generalized wire geometrical modeling. Then, electric field integral equations are formed based on EM boundary conditions. Finally, by virtue of high order MoM in which mixed-domain basis functions are adopted, the equations are made discrete and solved. The results of simulation show that this method is simple, accurate and has some practical value and theoretical meanings