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Pattern Synthesis and Calibration Methods for Conformal Array Antennas

机译:保形阵列天线的方向图综合和定标方法

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摘要

This paper presents pattern synthesisrnmethods and calibration methods for the conformalrnarray antennas (CAAs). First, the author shows tworntypes of the pattern synthesis methods, the projectionrnmethod and the null points adjusting method. Thesernhave been developed in order to obtain low sideloberncharacteristics for the CAAs. In the projectionrnmethod, all element antenna positions are projectedrnon an aperture plane normal to the desired beamrndirection. Then, excitation amplitude and phase ofrneach element antenna is determined from the desiredrnamplitude distribution, the element spacing densityrnand the element radiation pattern amplitude. On thernother hand, the null points adjusting method sorndetermines the excitation amplitude and phase ofrneach element antenna that the null points of thernobtained pattern coincides with them of the desiredrnlow sidelobe pattern. Next, the author presents thernrotating-element electric-field vector (REV) methodrnfor CAA calibration. This method is able to measurernrelative amplitude and phase of an electric fieldrnvector radiated from each element antenna includingrnmutual coupling effects by only measuring therncomposite power radiated from the array. Thernauthor also presents the modified REV method. Thisrncan measure amplitude and phase error of each bit ofrna digital phase shifter by the composite amplitudernand phase.
机译:本文介绍了共形阵列天线(CAA)的方向图合成方法和校准方法。首先,作者展示了两种模式合成方法:投影法和零点调整法。已经开发了这些方法以便获得CAA的低旁瓣特征。在投影方法中,所有元件天线的位置都投影在垂直于所需波束方向的孔径平面上。然后,根据所需的振幅分布,元件间距密度rn和元件辐射方向图振幅,确定每个元件天线的激励幅度和相位。另一方面,零点调整方法确定了每个元件天线的激励幅度和相位,使获得的方向图的空点与期望的低旁瓣方向图的空点重合。接下来,作者提出了用于CAA校准的旋转元件电场矢量(REV)方法。该方法能够通过仅测量从阵列辐射的复合功率来测量从每个元件天线辐射的电场的相对幅度和相位,包括相互耦合效应。该作者还介绍了改进的REV方法。这可以通过复合幅度和相位来测量数字移相器每个位的幅度和相位误差。

著录项

  • 来源
  • 会议地点 Stockholm (SE)
  • 作者

    Yoshihiko KONISHI;

  • 作者单位

    Information Technology RD Center, Mitsubishi Electric Corporation 5-1-1 Ofuna, Kamakura, Kanagawa 247-8501, Japan e-mail: konishi@isl.melco.co.jp;

  • 会议组织
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 TN823.11;
  • 关键词

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