A Modified Holographic Technique for Planar Near-Field Antenna Measurements
A Modified Holographic Technique for Planar Near-Field Antenna Measurements
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DOI：
10.1109/tap.2008.929522
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发表时间：
2008-09
影响因子：
5.7
通讯作者：
M. Leach;D. Smith;S. Skobelev
中科院分区：
文献类型：
--
作者：
M. Leach;D. Smith;S. Skobelev
提出了一种改进的基于合成平面波的全息技术，用于确定中等增益喇叭天线的辐射方向图和口径场。该修改是基于使用近场和参考信号的和差两者来经由简单的低成本的仅振幅近场测量形成全息图。当与仅使用和信号的先前版本相比时，该方法允许增加的样本间隔，并且还提供了最终结果的质量的改进。在10 GHz频率的金字塔和圆锥喇叭天线的计算和测量结果证实了修改后的技术的有效性。
A modification of the synthetic-plane-wave-based holographic technique for determining radiation patterns and aperture fields of medium-gain horn antennas is proposed. The modification is based on using both the sum and difference of the near field and reference signals to form the hologram via simple low-cost amplitude-only near field measurements. This approach when compared to the previous version, where only the sum signal is used, allows increased sample spacing, and also provides an improvement in quality of the final results. The effectiveness of the modified technique is confirmed by both calculated and measured results obtained for pyramidal and conical horn antennas at 10 GHz frequency.