【作者】 席磊； 尹应增； 张杰； 苏振华；

【Author】 Xi Lei Yin Yingzeng Zhang Jie Su Zhenghua (National Key Laboratory of Antennas and Microwave Technology, Xi’an, Shaanxi, 710071)

【机构】 西安电子科技大学天线与微波技术国家重点实验室；

【摘要】 本文通过建立基于波导缝隙阵的对称振子等效模型来分析各个振子间的耦合影响。文章首先采用三角形式的锥削分布对阵列中各个振子的激励幅度进行了加权,对阵列的方向图进行综合以降低副瓣;其次通过观察各个振子的阻抗情况,调节振子的长短以改变其相位分布使其都在中心频点谐振,以此来对振子间的耦合进行补偿,改善阵列的辐射性能。这样就对阵列单元之间的耦合补偿分析计算提供了一种快捷简便的方法,并且对波导缝隙阵的设计有很大的参考价值。更多还原

【Abstract】 This paper presented the mutual coupling analyzing between dipoles in the antenna array, an equivalent model of the slot antennas on waveguides. At the beginning we weighted the exciting amplitude of the dipoles in the array using the triangular taper distribution, with the purpose to lower the side lobe through antenna pattern synthesis. Then adjust the phase of each dipole by changing their lengths to make them resonant at the center frequency, according to the impedance situation of each dipole. By this way, we could compensate the mutual coupling between dipoles and improve the radiation performance of arrays. Here we show a simple and efficient method of calculation and analysis of coupling compensation between the array elements, and it is valuable to the design of slot antennas on waveguides.更多还原