摘要:
本文介紹一種簡便、快速、直觀的檢驗(yàn)支撐桿型衰減器匹配性能的方法。它的基本原理是在微波頻率上測繪被測衰減器的相對(duì)衰減量分布曲線,再用相移法測量反映衰減器漸變段匹配程度的電壓駐波比S,對(duì)比分析所得曲線和S值,確定對(duì)曲線的形狀及其起始段斜率的要求。此要求確定后,在檢驗(yàn)衰減器時(shí),只需測繪它的微波相對(duì)衰減量分布曲線看是否符合要求即可。采用這種方法大大提高了測試速度。實(shí)踐證明,這種方法不僅在研制行波管中起了一定作用,還可以作為小批量生產(chǎn)工藝流程中檢驗(yàn)衰減器的有用手段。
Abstract:
A simple, rapid, directly observable method for examining the supporting rod type attenuator s matching property is discussed. The fundamental principle employed is to measure and work out the relative attenuation distribution curve of the attenuator at microwave frequencies, and then by phase shift method to measure the VSWR S, value as an indication of matching quality of the attenuator in its region of slow variation in attenuation, compare and analyse the obtained curve and the S value in order to determine required form of the curve and slope of the starting section. When these are established, in further examination work on attenuators all one needs to do is just to measure and work out an attenuator's microwave relative attenuation distribution curve to see if it meets the requirement established. By adopting this method, one increases greatly the rapidity of measurement. From experimence, we can say that this method is not only useful in the development research work on TMT, but is useful on a small scale manufacturing of TMT's .
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