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本文从实验上研究了平衡天线开关中孪生TR管的两单管间的相位差对开关接收损耗和接收驻波比的影响。结果表明,当两单管间的相位差大于30°时,则接收损耗将大于0.5dB,接收驻波比也相应增大。文中还将实验结果和理论计算作了比较。 本文还研究了由三级插入式放电管组成的孪生TR管中各级管子的相位与整管相位的关系;结果表明,这个关系近似地符合相位叠加原则。
In this paper, we study the influence of the phase difference between the two single tubes of twin TR tube in the balanced antenna switch on the switching loss and the receiving standing wave ratio. The results show that when the phase difference between two single tubes is greater than 30 °, the receiving loss will be greater than 0.5dB and the receiving standing wave ratio will also increase correspondingly. The article also compares the experimental results with theoretical calculations. In this paper, the relationship between the phase of the tubes at different stages and the phase of the whole tube in twin TR tubes composed of three-stage plug-in discharge tubes is also studied. The results show that this relationship approximates to the phase superposition principle.