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该文介绍了同轴线探针激励波导时,对于伸入矩形波导中的探计、及给探针加上介质护套后的设计的一种理论模型。并经过理论计算结果与实验结果的比较,证明了这种模型是很精确的。利用这种模型可以在各种情况下,对转接头的带宽进行研究。通过研究我们发现,同轴电缆所开窗口的孔径尺寸在整个频带的微波传输中起重要作用。另外,转接头的带宽还可以因探针在波导上的位置的偏移以及对探针加上介质护套而得到改善。
This paper presents a theoretical model for the design of a probe inserted into a rectangular waveguide and a dielectric sheath applied to the probe when the coaxial probe is excited by a waveguide. After comparing the theoretical calculation results with the experimental results, it is proved that this model is very accurate. Using this model, the bandwidth of the adapter can be studied under a variety of circumstances. Through research we found that the aperture size of the window opened by the coaxial cable plays an important role in the microwave transmission over the entire frequency band. In addition, the bandwidth of the adapter can also be improved due to the shift of the probe’s position on the waveguide and the application of a dielectric sheath to the probe.