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Calibration methods for free space dielectric microwave measurements with a 4-channel-network-analyzer

机译：具有4通道网络分析仪的自由空间电介质微波测量的校准方法

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At microwave frequencies the dielectric properties of ceramic and composite materials can be determined on the basis of free space measurements with the help of a vector network analyzer. For the accurate calibration of the measurement setup the newly developed LN{sub}1N{sub}2-method (Line Network) and the LNN-method are presented in this article. In contrast to the TRL-technique (Through Reflect Line), the calibration standards of the LNN- and LN{sub}1N{sub}2 -method are all of equal length. This is advantageous for free space applications where a variation of the antenna positions might be critical due to changes of the beam propagation. Whereas the calibration standards of the LNN-method consist of three consecutive positions for the placement of obstacle networks, the LN{sub}1N{sub}2 -method is only in need of two positions. Besides the reduced need of space the obstacle networks can thus be placed symmetrically around the focusing area of the free-space antenna-lens system.
机译：在微波频率下，陶瓷和复合材料的电介质特性可以在矢量网络分析仪的帮助下基于自由空间测量来确定。为了精确校准测量设置，本文提出了新开发的LN {Sub} 1N {Sub} 2方法（线路网络）和LNN-方法。与TRL技术（通过反射线）相比，LNN-和LN {SUB} 1N {SUB} 2的校准标准 - 方法是相同的长度。这对自由空间应用是有利的，其中天线位置的变化可能由于波束传播的变化而是至关重要的。虽然LNN-方法的校准标准包括三个连续位置，用于放置障碍网，LN {Sub} 1N {Sub} 2 -Method仅需要两个位置。除了减少的空间需求之外，障碍物网络可以围绕自由空间天线系统的聚焦区域对称地放置。

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