| 摘要: |
| 相控阵天线需要足够的瞬时带宽以满足无线通信系统的性能要求。分析了限制圆环相控阵天线瞬时带宽的影响因素，主要包括频率变化引起的天线波束指向偏差和天线孔径渡越时间对瞬时带宽的限制。比较了圆环相控阵天线与线阵相控阵天线瞬时带宽的异同，并给出了圆环相控阵天线瞬时带宽的计算方法，为圆环相控阵天线的设计提供了理论指导。 |
| 关键词: 圆环相控阵天线 瞬时带宽 波束指向 孔径渡越时间 |
| DOI： |
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| 基金项目: |
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| Analysis and calculation of instantaneous bandwidth of circular phased array antenna |
| LIANG Yuhong,DENG Miyuan,WEN Jian |
| (Southwest China Institute of Electronic Technology,Chengdu 610036,China) |
| Abstract: |
| Phased array antennas require sufficient instantaneous bandwidth to meet the performance requirements of wireless communication systems.The influencing factors that limit the instantaneous bandwidth of circular phased array antenna are analyzed,including the beam-pointing error caused by frequency change and the limitation of aperture fill time on instantaneous bandwidth.The differences and similarities between the instantaneous bandwidth of circular phased array and linear phased array antenna are compared,and the calculation method of instantaneous bandwidth of circular phased array antenna is given,which provides theoretical guidance for the design of circular phased array antennas. |
| Key words: circular phased array antenna instantaneous bandwidth beam pointing aperture fill time |
