一种新型波导口单脉冲天线设计

发布时间：2018-05-06 01:14

本文选题：开口波导 + 单脉冲　；参考：《微波学报》2017年05期

【摘要】：提出了一种新型波导口单脉冲天线阵设计,分别给出了驻波曲线和辐射方向图的测试结果。该天线辐射单元采用呈90°结构的小型化波导口形式,通过底部的馈电倾斜缝馈电实现阵面的锥削分布要求,克服了传统波导缝隙天线设计复杂及对加工精度要求高的缺点,实现较为简单。采用理论与实验相结合的方法分析了测试结果与仿真结果差距较大的问题,去除了较为敏感的短路块结构,综合考虑工程可实现性及电性能两个方面,对辐射单元进行了二次优化设计并完成了天线实物加工。实验结果表明,该天线具有2.7%的带宽(驻波不大于2),-20 d B副瓣性能和45%的辐射效率,实现了与传统波导天线相当的单脉冲性能,为波导天线设计提供了一种新的方法,在弹载星载领域具有较广泛的工程应用前景。
[Abstract]:A new type of waveguide aperture monopulse antenna array is proposed. The measured results of standing wave curve and radiation pattern are given. The antenna radiation unit adopts the form of a miniaturized waveguide opening with a 90 掳structure, and realizes the conical distribution of the array surface through the bottom feed inclined slot feed, which overcomes the shortcomings of the traditional waveguide slot antenna which is complicated in design and requires high machining accuracy. The implementation is relatively simple. The gap between the test results and the simulation results is analyzed by combining theory and experiment. The sensitive short-circuit block structure is removed and the engineering realizability and electrical performance are considered comprehensively. The secondary optimization design of the radiation unit is carried out and the object processing of the antenna is completed. The experimental results show that the antenna has a bandwidth of 2.7% (the standing wave is no more than 2 ~ 20 dB sidelobe performance and 45% radiation efficiency), and the monopulse performance of the antenna is equivalent to that of the traditional waveguide antenna, which provides a new method for the design of the waveguide antenna. It has a wide range of engineering application prospects in the field of missile-borne spaceborne.
【作者单位】：上海电机学院电子信息学院;
【基金】：国家自然科学基金(61201116)
【分类号】：TN820

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