高增益低旁瓣宽扇形波束脊形波导缝隙天线阵列设计

      姚华飞, 邱琳琳, 王安康, 马亚东

      姚华飞,邱琳琳,王安康,等. 高增益低旁瓣宽扇形波束脊形波导缝隙天线阵列设计[J]. 电波科学学报,2024,39(3):544-551. DOI: 10.12265/j.cjors.2023247
      引用格式: 姚华飞,邱琳琳,王安康,等. 高增益低旁瓣宽扇形波束脊形波导缝隙天线阵列设计[J]. 电波科学学报,2024,39(3):544-551. DOI: 10.12265/j.cjors.2023247
      YAO H F, QIU L L, WANG A K, et al. Design of high-gain low-sidelobe wide-sector beam slotted ridge waveguide antenna array[J]. Chinese journal of radio science,2024,39(3):544-551. (in Chinese). DOI: 10.12265/j.cjors.2023247
      Reference format: YAO H F, QIU L L, WANG A K, et al. Design of high-gain low-sidelobe wide-sector beam slotted ridge waveguide antenna array[J]. Chinese journal of radio science,2024,39(3):544-551. (in Chinese). DOI: 10.12265/j.cjors.2023247

      高增益低旁瓣宽扇形波束脊形波导缝隙天线阵列设计

      详细信息
        作者简介:

        姚华飞: (1983—),男,贵州人,中国电子科技集团公司第二十七研究所高级工程师,硕士,主要研究方向为综合电子信息系统测评、天线设计技术和雷达相控阵天线设计技术。 E-mail: liyang830427@sina.com

        邱琳琳: (1992—),女,河南人,中国电子科技集团公司第二十七研究所工程师,硕士,主要研究方向为特种飞机任务电子系统的试验测试与评估、机电一体化设计。 E-mail: qiull1992@163.com

        王安康: (1992—),男,河南人,中国电子科技集团公司第二十七研究所工程师,博士,主要研究方向为天线辐射、散射测量技术、波导缝隙天线设计技术、反射面天线设计技术、雷达相控阵天线设计技术、测向天线系统设计技术、抗干扰天线系统设计技术和卫星通信天线设计技术。E-mail: kang1992boy@163.com

        马亚东: (1988—),男,河南人,中国电子科技集团公司第二十七研究所工程师,硕士,主要研究方向为任务电子系统试验测评。E-mail: 3486723991@qq.com

        通信作者:

        姚华飞 E-mail: liyang830427@sina.com

      • 中图分类号: TN820

      Design of high-gain low-sidelobe wide-sector beam slotted ridge waveguide antenna array

      • 摘要:

        提出了一种具有高增益低副瓣的脊形波导缝隙阵列天线,中心工作频率为24.125 GHz,其包括一个八路馈电网络和一个尺寸为400 mm×65 mm的8×40辐射缝隙。通过波束合成方法提取天线阵列的期望激励分布,采用截止模式功率分配器灵活控制功率比。使用三维电磁仿真软件HFSS综合仿真计算,在中心频率处,获得仰角平面上的旁瓣电平(sidelobe level, SLL)和半功率波束宽度(half power beam width, HPBW)分别为−20.9 dB和54.5°、方位角平面上的SLL和HPBW分别为−27.8 dB和2.5°、峰值增益为23.2 dBi,仿真结果与理论分析一致。此天线可以同时实现低旁瓣的宽扇形波束,覆盖较宽的检测范围,并减轻来自其他方向的干扰,具有应用于空中探测、反无人机、气象雷达和成像雷达的潜力。

        Abstract:

        In this paper, a slotted ridge waveguide antenna array(SRWAA) with high-gain and low-sidelobe and a center frequency of 24.125 GHz is proposed, consisting of an eight-way feeding network and an 8×40 radiating slot with a dimension of 400 mm×65 mm. The expected excitation distribution for the antenna array is extracted by beam synthesis method. By using a cut-off-mode power divider, the power ratio can be flexibly controlled. The sidelobe level(SLL) and half-power beam width(HPBW) in elevation plane are −20.9 dB and 54.5°, and the SLL and HPBW in azimuth plane are −27.8 dB and 2.5° respectively, and the peak gain is 23.2 dBi by using 3D electromagnetic simulation software HFSS. The simulation results are in good agreement with the theoretical analysis. The SRWAA can realize wide-sector beams with low-sidelobe at the same time, which covers a wide detection range and mitigate the interference from other directions. This work has the potential to be applied to air detection, antidrone, meteorological radar, and imaging radar.

      • 图  1   地面物体对接收信号产生的干扰和杂波

        Fig.  1   Schematic of interference and clutter generated by ground objects on received signals

        图  2   等间距直线阵列

        Fig.  2   Linear array antenna with even elements

        图  3   赋形波束综合方法得到的扇形波束性能

        Fig.  3   Performance of sector beams obtained by the synthesis method of shaped beams

        图  4   脊形波导结构示意图

        Fig.  4   Schematic of ridge waveguide structure

        图  5   归一化电导的分布及其与偏移量的关系

        Fig.  5   Distribution of normalized conductance and its relationship with the offset

        图  6   单根脊形波导缝隙天线的辐射方向图

        Fig.  6   Radiation pattern for the proposed SRWAA

        图  7   四路脊形波导功分器仿真模型图

        Fig.  7   Simulation model diagram of a four-way ridge waveguide power divider

        图  8   脊高度变化引起的移相器传输幅度和相位变化

        Fig.  8   Transmission amplitude and phase in terms of the height of phase shifter

        图  9   移相器馈电网络仿真结果

        Fig.  9   Simulation results of phase shifter feeding network

        图  10   脊形波导缝隙天线整体模型图

        Fig.  10   Configuration of the proposed SRWAA

        图  11   脊形波导缝隙天线反射系数

        Fig.  11   Simulated reflection coefficient for the proposed SRWAA

        图  12   不同频点下E和H面仿真辐射方向图

        Fig.  12   Simulated radiation direction maps of E and H planes at different frequency points

        图  13   不同软件仿真得到的不同频点下E和H面归一化方向图

        Fig.  13   Normalized radiation pattern of E and H planes obtained from different software simulations at different frequencies

        表  1   四路脊形波导功分器优化后的参数值

        Tab.  1   Parameter values of optimized four-way ridge waveguide power divider mm

        参数 取值 参数 取值 参数 取值
        a 4.5 l1 6.00 a2 6.00
        s 1.5 d1 4.83 d2 3.25
        a1 7.5 s1 2.00 de 6.50
        b 3.0 l2 4.00
        下载: 导出CSV

        表  2   脊形波导缝隙阵优化后参数

        Tab.  2   Optimized parameters of ridge waveguide slot array mm

        编号 x 2l 编号 x 2l
        1 0.05 6.40 11 0.22 6.45
        2 0.07 6.42 12 0.24 6.45
        3 0.09 6.45 13 0.26 6.45
        4 0.10 6.40 14 0.28 6.42
        5 0.12 6.40 15 0.30 6.44
        6 0.14 6.42 16 0.32 6.44
        7 0.15 6.42 17 0.34 6.44
        8 0.17 6.42 18 0.36 6.45
        9 0.19 6.42 19 0.38 6.45
        10 0.20 6.45 20 0.39 6.45
        下载: 导出CSV
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      出版历程
      • 收稿日期:  2023-08-28
      • 录用日期:  2024-04-07
      • 网络出版日期:  2024-04-07
      • 刊出日期:  2024-06-29

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