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首页> 美国卫生研究院文献>Sensors (Basel Switzerland) >A Novel Electrically Small Ground-Penetrating Radar Patch Antenna with a Parasitic Ring for Respiration Detection
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A Novel Electrically Small Ground-Penetrating Radar Patch Antenna with a Parasitic Ring for Respiration Detection

机译：一种新型电小型地面穿透雷达斑块贴片天线寄生环用于呼吸检测

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An electrically small patch antenna with a low-cost high-permittivity ceramic substrate material for use in a ground-penetrating radar is proposed in this work. The antenna is based on a commercial ceramic 915 MHz patch antenna with a size of 25 × 25 × 4 mm3 and a weight of 12.9 g. The influences of the main geometric parameters on the antenna’s electromagnetic characteristics were comprehensively studied. Three bandwidth improvement techniques were sequentially applied to optimize the antenna: tuning the key geometric parameters, adding cuts on the edges, and adding parasitic radiators. The designed antenna operates at around 1.3 GHz and has more than 40 MHz continuous −3 dB bandwidth. In comparison to the original antenna, the −3 and −6 dB fractional bandwidth is improved by 1.8 times and 4 times, respectively. Two antennas of the proposed design together with a customized radar were installed on an unmanned aerial vehicle (UAV) for a quick search for survivors after earthquakes or gas explosions without exposing the rescue staff to the uncertain dangers of moving on the debris.
机译：在这项工作中提出了一种具有低成本高介电常数陶瓷衬底材料的电小贴片天线，用于在该工作中提出用于地面穿透雷达。天线基于商业陶瓷915MHz斑点斑点，其尺寸为25×25×4mm3和重量为12.9g。全面研究了主要几何参数对天线电磁特性的影响。顺序地应用了三种带宽改​​进技术以优化天线：调整关键几何参数，在边缘上添加切口，并添加寄生散热器。设计的天线在约1.3GHz左右运行，持续40 MHz -3 dB带宽。与原始天线相比，-3和-6 dB分数带宽分别提高了1.8倍和4次。建议设计的两个天线与定制雷达安装在无人驾驶的空中车辆（UAV）上，以便在地震或天然气爆炸后快速搜索幸存者，而不将救援人员暴露在碎片上移动的危险。

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