A Waveguide Slot Array antenna design for X-band radar

2016 9th International Kharkiv Symposium on Physics and Engineering of Microwaves, Millimeter and Submillimeter Waves (MSMW) Pub Date : 2016-06-20 DOI:10.1109/MSMW.2016.7538075

Y. E. Yamac, A. Kizilay

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引用次数: 7

Abstract

In this paper, it is aimed to design and optimize a Waveguide Slotted Array (WSA) antennas for X-band radar applications. The slot offsets, slot lengths and widths, port position of the antenna are optimized by using Trust Region Framework and Classic Powel algorithms in simulation environment without requiring analytical calculations. The side lobes of radiation pattern are suppressed by using these optimizations. The antennas are simulated with different slot's numbers (11 and 21 slotted antennas). Although using more slots provides narrower beam, back lobe of the radiation pattern rises crucial levels. A parabolic structure is designed to avoid from back lobes and a small gain increment can be obtained with this modification. The modified 21-slotted WSA antenna presents 20.8 dB maximum realized gain, 4.50 degree 3 dB angular width, 90 degree main lobe direction, and 24.9 dB side lobe level in simulation results at 9.5 GHz. The antenna is also fabricated and measured. A good agreement is obtained between simulation and measurement.

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一种用于x波段雷达的波导缝隙阵列天线设计

本文旨在设计和优化用于x波段雷达的波导开槽阵列(WSA)天线。在不需要解析计算的情况下，在仿真环境下，采用信赖域框架和经典功率算法对天线的缝隙偏移量、缝隙长度和宽度、端口位置进行优化。通过这些优化，可以抑制辐射方向图的侧瓣。采用不同槽数(11槽和21槽)对天线进行仿真。虽然使用更多的槽可以提供更窄的波束，但辐射模式的后瓣会提高关键水平。设计了一种抛物线结构以避免后叶的干扰，可以获得较小的增益增量。仿真结果表明，改进后的21槽WSA天线在9.5 GHz频段的最大实现增益为20.8 dB，角宽度为4.50°3db，主瓣方向为90°，旁瓣电平为24.9 dB。天线也被制作和测量。仿真结果与实测结果吻合较好。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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2016 9th International Kharkiv Symposium on Physics and Engineering of Microwaves, Millimeter and Submillimeter Waves (MSMW)

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