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基于光子学的微波移频方法研究

高永胜 谭佳俊 王瑞琼

高永胜, 谭佳俊, 王瑞琼. 基于光子学的微波移频方法研究[J]. 电子与信息学报. doi: 10.11999/JEIT220503
引用本文: 高永胜, 谭佳俊, 王瑞琼. 基于光子学的微波移频方法研究[J]. 电子与信息学报. doi: 10.11999/JEIT220503
GAO Yongsheng, TAN Jiajun, WANG Ruiqiong. Research on Microwave Frequency Shift Method Based on Photonics[J]. Journal of Electronics & Information Technology. doi: 10.11999/JEIT220503
Citation: GAO Yongsheng, TAN Jiajun, WANG Ruiqiong. Research on Microwave Frequency Shift Method Based on Photonics[J]. Journal of Electronics & Information Technology. doi: 10.11999/JEIT220503

基于光子学的微波移频方法研究

doi: 10.11999/JEIT220503
基金项目: 国家自然科学基金(61701412),全国博士后创新人才支持计划(BX201700197),中国博士后科学基金(2017M623238),陕西省重点研发计划(2021GY-096)
详细信息
    作者简介:

    高永胜:男,副教授、研究生导师,主要研究方向为微波光子信号处理、光载射频通信、微波光子卫星通信、微波光子雷达等

    谭佳俊:男,硕士生,研究方向为微波光子信号处理、微波光子雷达等

    王瑞琼:女,博士生,主要研究方向为微波光子信号处理、光载射频通信等

    通讯作者:

    高永胜 ysgao@nwpu.edu.cn

  • 中图分类号: TN29

Research on Microwave Frequency Shift Method Based on Photonics

Funds: The National Natural Science Foundation of China (61701412), The Postdoctoral Innovation Talents Support Program (BX201700197), China Postdoctoral Science Foundation (2017M623238), The Key Research and Development Program of Shaanxi Province(2021GY-096)
  • 摘要: 微波移频技术(MFS)广泛应用于电子对抗、卫星通信、频控阵雷达等系统。基于光子学的微波移频方法具有带宽大、频谱纯净等优点。为了探索基于光子学的微波移频性能,该文对比研究了基于声光移频(AOFS)、锯齿波相位调制(SPM)和I/Q调制3种微波光子移频方法,阐释了3种方法的原理,搭建了对应的原理验证系统,对不同的移频方法进行了实验与分析。结果表明,3种移频方法都可以实现精准的微波信号移频,实现大于30 dB的杂散抑制比。但3种移频方法也存在各自的局限性:AOFS的工作频率、带宽和移频方向较为固定,可调谐性低;SPM移频与I/Q调制对输入驱动信号要求严格,系统稳定性较差。
  • 图  1  AOFS结构图、工作模式及实物图[25]

    图  2  基于AOFS的微波信号移频结构图

    图  3  SPM原理图及驱动信号数学模型

    图  4  基于SPM的微波信号移频结构图

    图  5  基于I/Q调制的微波光子移频

    图  6  实验光谱图

    图  7  PD输出的上下移频500 MHz信号频谱图

    图  8  中心频率为15 GHz的频移信号频谱

    图  9  SPM方法得到的500 kHz上下频移信号频谱

    图  10  不同频率下移频性能对比

    图  11  移频后杂散抑制比随占空比的变化

    图  12  不同锯齿波幅度下的移频信号频谱

    图  13  非理想锯齿波幅度下的移频信号频谱

    图  14  实验光谱图

    图  15  15 GHz信号移频-25 MHz到+25 MHz后的频谱

    图  16  不同幅相不平衡条件下的边带杂散抑制比

    表  1  实验器材型号和参数表

    器件名称型号器件名称型号
    激光器KG-DFB-40-C32微波信号源Agilent, E8256D
    MZMAZ-DV5-65-PFA-PFA-SSZ818OBPFEXFO XTM-50
    AOFSIPF-500-50-1550-2FPPDFinisar BPDV2150R
    PM
    功率放大器
    PM-DV5-40-PFA-PFA-LV
    CMP-0.122G-3329-K
    直流源
    光谱仪
    Gwinstek GDP-4303S
    BOSA BOSA400C+L
    PDM-DPMZMFujitsu FTM7977HQA频谱仪R&S FSQ40
    函数发生器Junctek PSG 9060
    下载: 导出CSV

    表  2  3种移频方式对比表格

    移频方式工作频率范围瞬时带宽移频量杂散抑制比稳定性可调谐性
    AOFS8~65 GHzGHz量级<1 GHz>45 dB稳定
    SPM8~65 GHzGHz量级取决于DDS或DAC20~35 dB较差
    I/Q调制8~40 GHzGHz量级DC~40 GHz30~40 dB
    下载: 导出CSV
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出版历程
  • 收稿日期:  2022-04-24
  • 录用日期:  2022-09-06
  • 修回日期:  2022-09-06
  • 网络出版日期:  2022-09-27

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