A novel low-profile SWB unidirectional supershaped antenna for advanced ground penetrating radar applications

Proceedings of the 15th International Conference on Ground Penetrating Radar Pub Date : 2014-12-04 DOI:10.1109/ICGPR.2014.6970542

V. Paraforou, D. Caratelli, D. Tran

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引用次数: 3

Abstract

We report an advanced mathematical method featuring both antenna miniaturization and bandwidth enhancement for super wideband (SWB) antennas intended for advanced GPR applications. By implementing the supershape formula a wide range of practical antenna shapes can be described by just three design parameters, facilitating a lot the optimum antenna design. As a proof-of-concept, a PCB-based, balanced-fed antenna is presented and demonstrated. Our antenna design exhibits SWB characteristics since it operates in the frequency range 0.48 - 10.2GHz meeting the trade-off requirements for depth penetration and range resolution. Additionally, the employed floated ground plane yields a unidirectional broadside radiation pattern making the use of shielding and absorbing cavity unnecessary. Pattern stability is observed over the whole operating frequency range. In time-domain, a low pulse late-time ringing was achieved through the radiator shape optimization and the thin absorbing layer introduction as resistive loading method.

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用于先进探地雷达的新型低轮廓SWB单向超形天线

我们报告了一种先进的数学方法，该方法具有天线小型化和带宽增强的超宽带(SWB)天线，用于先进的GPR应用。通过实施超形公式，可以用三个设计参数描述广泛的实用天线形状，为天线的优化设计提供了很大的便利。作为概念验证，提出并演示了一种基于pcb的平衡馈电天线。我们的天线设计具有SWB特性，因为它工作在0.48 - 10.2GHz的频率范围内，满足深度穿透和距离分辨率的权衡要求。此外，所采用的浮动地平面产生单向的宽侧辐射模式，使得屏蔽和吸收腔的使用不必要。在整个工作频率范围内观察到模式稳定性。在时域上，通过优化辐射体形状和引入薄吸收层的电阻加载方式实现了低脉冲后时间振铃;

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Proceedings of the 15th International Conference on Ground Penetrating Radar

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