高功率微波馈源输出窗的研究
Fabrication of high power microwave feed output window
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摘要: 结合物理光学和几何光学，讨论了高功率微波馈源真空输出窗的形状和厚度的设计方法，给出了一个X波段、脉冲功率容量1.5 GW、外径548 mm、高83.4 mm、厚33.4 mm的高斯馈源聚四氟乙烯碟形真空输出窗的设计实例。在中心频率9.3 GHz时测试输出窗的驻波系数为1.07,驻波系数小于1.24的频带为9%,带介质窗的馈源方向图与不带介质窗的馈源方向图基本一致。应用一维传热学理论对介质窗内部的温度分布进行了分析。冷测结果与理论结果基本一致。Abstract: Based on physic-optics and geometric-optics, a design method of high power microwave feed vacuum output window was discussed. For an X band, 1.5 GW pulse power handling ability gaussian feed, a dishing type of Teflon vacuum output window was fabricated, with a diameter of 548 mm, a height of 83.4 mm and a thickness of 33.4 mm. The test results are in good agreement with theoretics. The voltage standing wave ratio(VSWR) at the central frequency 9.3 GHz was 1.07. The band with VWSR less than 1.24 was 9%. The direction pattern of the feed with the dielectric window was the same as that without the dielectric window. The temperature distribution was analysed by one dimension stable heat transmission theory.
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Key words:
- high power microwave /
- feed /
- vacuum output window /
- temperature distribution
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