惠勒帽法测量通信天线的辐射效率

2011 International Students and Young Scientists Workshop "Photonics and Microsystems" Pub Date : 2011-07-08 DOI:10.1109/STYSW.2011.6155845

P. Karstadt, A. Gupta

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引用次数: 5

摘要

测量天线辐射效率的一种方法是惠勒帽法。它使用一个波导，在他的截止频率下工作，以消除天线的远场。使用两次测量(带惠勒帽和不带惠勒帽)就可以计算出辐射效率。本文研究了惠勒帽不同形状、材料和最小高度的影响。辐射效率的测量并不精确，但测量的简便使该方法具有很高的吸引力。这一贡献表明，只要帽尺寸等设计准则保持不变，形状和材料对测量的辐射效率没有影响。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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Radiation efficiency measurement of communication antennas with Wheeler Cap method

One method to measure the radiation efficiency of an antenna is the Wheeler Cap method. It uses a wave guide, operated below his cut off frequency to eliminate the far field of the antenna. Using two measurements (with and without Wheeler Cap) it is possible to calculate the radiation efficiency. In this paper the impact of different shapes, material and the minimum heights of the Wheeler Cap are investigated. The measurement of radiation efficiency is not precise but the ease of measurement makes the method highly attractive. This contribution concludes that the shape and the material have no influence to the measured radiation efficiency as long as the design criterion like cap size are kept constant.

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2011 International Students and Young Scientists Workshop "Photonics and Microsystems"

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