时域平面近场测量的数值分析方法
NUMERICAL ANALYSIS METHOD FOR PLANAR NEAR-FIELD MEASUREMENT IN TIME DOMAIN
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摘要: 本文以H面喇叭为例,研究了天线时域近场的运动状态,用谱域法分析了平面近场分布状况,得出采样原则,为平面近场扫描测量提供了理论依据。介绍了时域平面近场测量的近远场变换公式,包括时域和频域两种计算途径。对各自的优点作出了探讨。运用近远场变换方法计算了时域远场和频域方向图。Abstract: The movement of antenna s near-field is studied in time domain. The near field distributions are analyzed by using plane wave-spectrum method. A sampling principle is deduced for planar near-field scanning in time domain. Some methods of near-far field transfer are introduced, which can be performed through time or frequency approach. The characteristics of the two approaches are discussed. Extensive numerical results of an H-plane waveguide horn illustrate the analysis.
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Yaghjian A D．An overview of near-field antenna measurements，IEEE Trans.on AP,1986,34(1):30-45．[2]Hansen T B,Yaghjian A D．Planar near-field scanning in the time domain.Part II:Sampling IEEE Trans．On AP，1994，42(9)：1280-1291．[3]Hansen T B，Yaghjian A D.Planar near-field scanning in the time domain.Part II:Sampling theorems and computation schemes,IEEE Trans on AP，1994，42(9)，1292-1300.[4]Hansen T B，Yaghjian A D．Formulation of probe-corrected planar near-field scanning in the time domain，IEEE Trans．On AP,1995，43(5)：569-584.[5]Kerns D M．Plane-wave scattering-matrix theory of antennas and antenna-antenna interactions，NBS Monograph 162，1982．[6]Yaghjian A D.Equivalence of surface current and aperture field integration for reflector antennas， IEEE Trans．On AP，1984，32(10)：1355-1358．[7]Hansen T B，Yaghjian A D．Formulation of time domain planar near field neasurements without probe correction，Rome Laboratory In-House Rep.RL-TR-93-210，1993.[8]Smythe W R. The Double current sheet in diffraction，Phys[J].Rev.1947,72(12):1066- -
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