小型ku波段单脉冲波导开槽阵列天线的设计

2015 International Conference on Microwave, Optical and Communication Engineering (ICMOCE) Pub Date : 2015-12-01 DOI:10.1109/ICMOCE.2015.7489745

M. Swetha, D. Jahagirdar

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引用次数: 6

摘要

开槽波导阵列天线在许多需要窄波束和低旁瓣电平的微波和雷达系统中得到了广泛的应用。重量轻，几何简单，高功率，有限的扫描体积和可靠性使得波导狭缝阵列在机载雷达应用中非常有用。提出了一种适用于机载雷达的四分之一高度波导结构的微型ku波段单脉冲波导阵列天线。天线由五层组成，包括单脉冲比较器。利用CST Microwave Studio对天线各层进行了设计和分析。采用泰勒孔径分布可获得低旁瓣的窄光束。本文叙述了产生理想辐射图的设计、制造工艺和电性能研究。在h面和e面旁瓣电平分别为-21dB和-14dB的情况下，和型增益优于23db。两个平面的差分通道交叉在3.8dB左右，h平面的零深度为36dB, e平面的零深度为25dB。

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Design of a Miniature Ku-Band monopulse waveguide slotted array antenna

Slotted waveguide array antennas find wide applications in many microwave and radar systems requiring narrow beam and low side lobe level. Light weight, geometric simplicity, high power, limited scan volume and reliability make waveguide slotted arrays very useful for airborne radar application. A Miniature Ku-Band monopulse slotted waveguide array antenna in quarter height waveguide configuration for on-board radar application is presented. Antenna consists of five layers including monopulse comparator. All the layers of the antenna have been designed and analyzed using CST Microwave Studio. Taylor's aperture distribution is selected to obtain narrow beam with low sidelobes. This paper describes design, fabrication technique and electrical performance study to produce desired radiation pattern. The gain of the sum pattern is better than 23 dB while the side lobe level is -21dB in H-plane and -14dB in E-plane. The crossover of difference channels in both planes are around 3.8dB and the null depth in H-plane is 36dB and in E-plane is 25dB.

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2015 International Conference on Microwave, Optical and Communication Engineering (ICMOCE)

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