CAJ | 학술논문

本文采用了时间步进算法（MOT ）求解时域线面结合积分方程（TDSWIE ），以解决金属平台和复杂线天线结合这种组合目标问题。为了提高该算法的精度和数值稳定性，文中采用了精确计算阻抗矩阵元素值的方式。对单级子天线放置在金属球面以及螺旋天线放置在圆台形天线基座等进行数值仿真，获得了天线与基座结合处的瞬态电流值、天线的回波损耗（ S11）、天线的输入导纳以及方向图等重要参数。数值结果验证了本文方法的有效性和精确性。
본문채용료시간보진산법（MOT ）구해시역선면결합적분방정（TDSWIE ），이해결금속평태화복잡선천선결합저충조합목표문제。위료제고해산법적정도화수치은정성，문중채용료정학계산조항구진원소치적방식。대단급자천선방치재금속구면이급라선천선방치재원태형천선기좌등진행수치방진，획득료천선여기좌결합처적순태전류치、천선적회파손모（ S11）、천선적수입도납이급방향도등중요삼수。수치결과험증료본문방법적유효성화정학성。
Marching-on-in time (MOT) method is used to solve the time domain surface-wire integral equation (TDSWIE) , so that we can solve complex problems ,such as wire antennas mounted on the perfect electrically conducting (PEC) surfaces ,etc . In order to improve the late-time stability of the method ,an efficient scheme based on accurately calculating the elements of the impedance matrix is adopted .In the numerical simulations of a dipole antenna mounted on a PEC sphere and a spiral antenna mount-ed on a PEC antenna pedestal ,the transient surface current ,S11 parameter ,the input admittance and the directivities of the antennas are obtained .Numerical results demonstrate the efficiency and accuracy of this method .