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能量输出窗是超高频电子器件的一个重要部件,器件所产生的高频能量就是通过它传输出去的。因此,能量输出窗不但要具有良好的高频特性,而且还要具有良好的可焊性、真空气密性和热稳定性。就器件的结构而言,能量输出窗的一端要同不锈钢管壳进行氩弧焊接,另一端同无氧铜波导进行钎焊。目前,大多数超高频电子器件的能量输出窗,几乎都是采用可伐与95％氧化铝瓷的外套封结构。因为可伐与不锈钢、无氧铜的线膨胀系数相差很大,所以给氩弧焊和钎焊带来很大困难。不但封接间隙很难控制,而且焊接后产生很大的机械应力,甚至有时出现可伐开裂
Energy output window is an important part of UHF electronic devices, the device generates high-frequency energy is transmitted through it. Therefore, the energy output window not only has good high-frequency characteristics, but also has good solderability, vacuum tightness and thermal stability. In terms of the structure of the device, one end of the energy output window is to be argon arc-welded to the stainless steel tube and the other end is brazed with the oxygen-free copper waveguide. At present, the energy output windows of most UHF electronic devices are almost always encased in a Kapok structure with 95% alumina porcelain. Because Kovar and stainless steel, oxygen-free copper linear expansion coefficient vary greatly, so to argon arc welding and brazing brought great difficulties. Not only the sealing gap is difficult to control, and the welding produces a great mechanical stress, and sometimes Kovar cracks