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Measurement of antennas and microwave components using time-domain reflectometry of a voltage impulse

机译:使用电压脉冲的时域反射法测量天线和微波组件

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摘要

Band-pass microwave systems such as ultra-wideband antennas are traditionally characterized in the frequency-domain through a vector network analyzer in an anechoic chamber. A recent study proved antennas could be accurately measured in the time-domain using a step-function time-domain reflectometer (TDR), without the need for an anechoic chamber. We propose a new advance in the TDR characterization method. An impulse generator is employed in place of the step generator in a TDR set-up. The advantage conferred by this change is that more energy is available beyond a given frequency than with a step, and so a higher signal-to-noise ratio is achieved. The theoretical result is compared with measurement.
机译:传统上,诸如超宽带天线之类的带通微波系统是通过消声室内的矢量网络分析仪在频域中进行表征的。最近的一项研究证明,使用步进功能时域反射仪(TDR)可以在时域中准确测量天线,而无需消声室。我们提出了TDR表征方法的新进展。在TDR设置中,使用脉冲发生器代替步进发生器。这种变化带来的好处是,给定频率之外的能量多于步进能量,因此可获得更高的信噪比。将理论结果与测量结果进行比较。

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