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一种弹载宽带圆极化天线阵设计 被引量:2

Design of a missile-borne broadband circular polarization antenna array
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摘要 本文设计了一种工作于X波段的弹载宽带圆极化四元阵。该阵列天线以印刷八木天线为基本单元,围绕导弹均匀布置,组成旋转对称的十字型结构。4个馈电端口的相对相位依次为0°、90°、180°和270°。利用镜像原理,使得单元天线尺寸减小了一半,实现了小型化,便于与载体共形。测试表明,该天线阵在整个X波段内回波损耗小于-10 d B,极化轴比基本小于3 d B,主辐射方向指向导弹正前方,平均增益为4.5 d B,满足设计要求,这与仿真结果较为一致。 In this paper, we design a missile-borne broadband circularly polarized antenna array, which can work in the total X-band. The array is composed of four printed yagi elements loaded around the missile, presenting a rotationally symmetric cross-shaped configuration. The relative phases of the four feed ports are arranged in a 0°, 90°, 180°, and 270° fashion. The size of the element is reduced to half by the method of image, which is easy to be conformal with the carrier. In the X band, the return loss is less than-10 d B and the axial ration is almost below 3d B. The main radiation direction is in front of the missile with an average gain of 4.5d B. Simulated and measured results are given, and they agree well with each other.
出处 《电子设计工程》 2014年第20期75-78,共4页 Electronic Design Engineering
关键词 印刷八木天线 弹载 宽频带 圆极化 阵列 printed yagi antenna missile-borne broadband circularly polarized antenna array
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参考文献6

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