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在雷达整机上作为天线转换开关用的天线开关管,为了满足其电性能上的要求,在管内充有一定量水汽和惰性气体(如Ar),当天线开关管承受高频脉冲功率时,在微波场的作用下产生气体电离,管内便发生一系列的物理与化学变化。水汽消耗影响天线开关管的电性能在高频功率作用时,要求天线开关管输入窗部分产生气体电离,形成“金属化”等离子区短路面,以反射输入的高频功率、要求漏进接收机的功率应愈小愈好。而一旦高频作用结束后,则要求管子必须迅速地消电离,要求恢复
In order to meet the requirements of its electrical performance, a certain amount of water vapor and inert gas (such as Ar) is filled in the tube as an antenna switching tube used for the antenna switch in the radar. When the antenna switch tube is subjected to the high-frequency pulse power, Under the action of the microwave field, gas ionization occurs and a series of physical and chemical changes take place in the tube. Water vapor consumption affect the electrical performance of the antenna switch When the high-frequency power, the antenna switch input tube requires part of the gas ionization, the formation of “metallized” plasma short circuit to reflect the input of high-frequency power required to leak into the receiver The power should be as small as possible. Once the high-frequency effect is over, the tube must be promptly deionized, requiring recovery