【摘要】 用时域有限差分方法模拟了由复合振子天线单元组成的天线阵列的辐射特性;计算了天线从同轴线的馈电效率,给出了天线阵列的辐射场和能量方向图;比较了不同排列方式下阵列的辐射方向图。模拟结果表明:这种天线阵列具有宽带特性和较高的馈电效率,适合于超宽带电磁脉冲的辐射应用。更多还原

【Abstract】 The antenna arrays which are composed of the combined-oscillator antennas are studied.The finite-difference time-domain method is used to simulate the radiation properties of the antenna arrays.The efficiency of feeding from the coaxial line to the antenna is calculated.The numerical results of the radiated fields and energy patterns for the single antenna,two-and four-element arrays are presented in this paper.The energy patterns for different configurations are compared.The numerical simulation results demonstrate that this kind of antenna array has the broad band characteristic and high feeding efficiency,and it can be used to radiate the ultrawide band electromagnetic pulse.更多还原