宽频带高效率平板缝隙天线的研究  

Research on Slotted Waveguide Antenna Array with Broad Bandwidth and High Efficiency

作　　者：丁晓磊 徐磊 

机构地区：[1]北京遥测技术研究所,北京100076

出　　处：《遥测遥控》2009年第5期42-48,共7页Journal of Telemetry,Tracking and Command

摘　　要：通过一个16×16波导缝隙天线阵的研制,给出一种宽频带、高增益、高效率平板天线和宽频带不等功分馈电网络的设计方法,并详细论述在一端短路的多模波导短路面上开缝阵的工作原理和关键设计公式。实测结果表明,该天线具有宽频带(≥20%)、高效率(≥70%)的突出优点。天线的总厚度为23mm。由于该种天线形式既克服了高增益径向线缝隙天线和波导缝隙阵天线频带窄的缺点,又克服了高增益微带阵列天线效率低的缺点,在需要宽频带、高增益、高效率、低剖面天线的设备中将有广阔的应用前景。A slotted multimode waveguide antenna array with broad bandwidth,high gain and high efficiency is introduced,and a low profile and broadband waveguide feed network is presented.Radiating slots are cut in the shorted wall of multimode waveguide which is short-circuited at one end and fed from the other end.The measured reflection bandwidth is ≥20% based on VSWR≤2.The gain is ≥30dBi and the efficiency is ≥70% over the entire bandwidth.The SLLs are less than-15dB over the entire bandwidth.The antenna overcomes the disadvantages of narrowband of conventional slotted antenna array and low efficiency of microstrip array for high gain.

关 键 词：宽频带 高效率 低剖面 多模波导 互耦 

分 类 号：TN822[电子电信—信息与通信工程]