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首页> 外文期刊>Microwave and optical technology letters >ULTRA-WIDEBAND VIVALDI ANTENNA DESIGN FOR MULTISENSOR ADAPTIVE GROUND-PENETRATING IMPULSE RADAR
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ULTRA-WIDEBAND VIVALDI ANTENNA DESIGN FOR MULTISENSOR ADAPTIVE GROUND-PENETRATING IMPULSE RADAR

机译:多传感器自适应穿地脉冲雷达的超宽带维瓦尔第天线设计

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摘要

This paper describes a partially dielectric-loaded Vivaldi antenna (PDVA) structure that maintains ultra-wideband antenna characteristics over a bandwidth ratio greater than 25:1 so as to improve the impulse radiation characteristics for multisensor adaptive ground-penetrating Radar (GPR) operations. The PDVA is introduced for metal-detector-combined GPR head designs in order to avoid performance degradations based on the sensor interferences. It is shown that high gain, low input reflection, and signal-ringing levels over the wide operational bands are attainable for a PDVA with proper dielectric and absorber loadings.
机译:本文介绍了一种部分介电负载的维瓦尔第天线(PDVA)结构,该结构在大于25:1的带宽比率下保持超宽带天线的特性,从而改善了多传感器自适应地面穿透雷达(GPR)操作的脉冲辐射特性。引入PDVA用于金属探测器组合式GPR探头设计,以避免由于传感器干扰而导致性能下降。结果表明,对于具有适当电介质和吸收体负载的PDVA,在宽工作频带上可获得高增益,低输入反射和信号振铃水平。

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