| 摘要: |
| 电压驻波比是雷达馈线系统的重要指标。采用环行器作为双工器的复杂结构雷达馈线系统电压驻波比的准确估算往往非常困难。提出了雷达馈线系统电压驻波比的一种工程分析方法，首先建立了基于环行器作为收发双工功能的雷达馈线系统链路模型，然后基于概率统计方法和三端口网络散射参数特性导出了馈线系统电压驻波比的计算公式。最后针对环行器两种负载状态，通过一个实例计算了馈线系统的反射系数和电压驻波比，给出了具体计算结果，并对其进行了仿真验证。 |
| 关键词: 电压驻波比 环行器 馈线系统 收发双工 雷达系统 |
| DOI：10.3969/j.issn.1672-2337.2018.04.014 |
| 分类号:TN957.2; TN61 |
| 基金项目:国家科技支撑计划（No.2011BAH24B05） |
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| Research on VSWR of the Radar Feeding System with Circulator |
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ZHOU Yanling, WANG Xiaolu
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The 38th Research Institute of China Electronics Technology Group Corporation, Hefei 230088, China
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| Abstract: |
| Voltage standing-wave ratio(VSWR) is an important characteristic for radar feeding system. The accurate VSWR estimation of the complicated radar feeding system which uses a circulator as the diplexer is very difficult. This paper presents a method for the analysis of VSWR of such radar feeding system. Firstly, an analysis model of the radar feeding system is established. Secondly, based on the statistical theory and circulator S-parameter characteristics, the equation used for calculating VSWR of the radar feeding system is proposed. Finally, taking a practical feeding system as an example, its reflection coefficient and VSWR are calculated. The results are verified using HFSS. |
| Key words: voltage standing-wave ratio (VSWR) circulator feeding system diplexer radar system |
