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首页> 外文期刊>International journal of RF and microwave computer-aided engineering >Multi-beam SIW leaky-wave antenna with 2-D beam scanning capability for millimeter-wave radar applications
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Multi-beam SIW leaky-wave antenna with 2-D beam scanning capability for millimeter-wave radar applications

机译：具有二维光束扫描能力的多光束SIW泄漏波天线，用于毫米波雷达应用

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摘要

In this article, a multi-beam substrate integrated waveguide (SIW) leaky-wave antenna (LWA) is proposed for millimeter-wave radar applications, which owns the advantages of 2-D scanning capability, high gain, low profile, and single layer configuration. The proposed antenna consists of a beam-forming network (BFN) based on a 2-D SIW parabolic reflector with eight waveguide feedings, and a 16-element LWA array. The open-stopband of the LWA is suppressed by employing a longitudinal slot into a conventional transverse slot LWA unit. In the E-plane, the BFN can generate eight desired distributions of the amplitude and the phase gradients which steers beam from −17.3° to 30.8° with the crossover level higher than −5.22 dB. In the H-plane, the frequency scanning LWA array can offer a continuous beam scanning range from −23° to 19° with operating frequency from 21 to 29 GHz. Finally, the antenna is prototyped and experimentally verified. The measured results are in accord with the simulated ones. The characteristics of the proposed antenna make it a very promising solution for applications in low-cost millimeter-wave radar systems.
机译：在本文中，提出了一种多光束基板集成波导（SIW）漏光天线（LWA），用于毫米波雷达应用，其拥有2-D扫描能力，高增益，低调和单层的优点配置。所提出的天线包括基于具有八个波导馈送的2-D SiW抛物线反射器和16元件LWA阵列的光束形成网络（BFN）。通过将纵向槽采用传统的横向槽LWA单元来抑制LWA的开口阻带。在E平面中，BFN可以产生振幅和相位梯度的八个所需分布，其使光束从-17.3°从-17.3°达到30.8°，并且交叉电平高于-5.22 dB。在H平面中，频率扫描LWA阵列可以提供从-23°到19°的连续光束扫描范围，工作频率为21到29 GHz。最后，天线是原型的，实验验证。测量结果符合模拟的结果。所提出的天线的特性使其成为低成本毫米波雷达系统中应用的非常有希望的解决方案。

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