雙漸變技術(shù)減小 AM-PM轉(zhuǎn)換系數(shù)的初步研究
AN INVESTIGATION INTO REDUCING AM-PM CONVERSION COEFFICIENT BY THE DOUBLE TAPER HELIX TECHNIQUE
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摘要: 行波管欠壓工作能減小AM-PM轉(zhuǎn)換系數(shù)。因此在行波管中加入一段工作于該狀態(tài)的慢波線應(yīng)能改善AM-PM轉(zhuǎn)換特性。由此引出了所謂雙漸變技術(shù)。 本文對該技術(shù)作了初步分析,實際制管證明了該技術(shù)不僅能提高電子效率,而且能改善AM-PM轉(zhuǎn)換特性。并且還具有多電平工作、降壓效果好等優(yōu)點。本文還總結(jié)了一套小信號設(shè)計方法。
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關(guān)鍵詞:
Abstract: The eonversion coefficient of a TWT can be reduced, when it works at under-voltage condition. Therefore if a section of helix which works at under-voltage condition is added to a TWT, the improvement of AM-PM eonversion coefficient can be expected,then a doubl taper helix technique is developed.This paper describes the double taper helix technique and presents a small signal design method. The actual TWT which uses the double taper helix proves that it not only raises the electron efficiency, but also improves the AM-PM conversion coefficient. Further experiment shows that this technique has other advantages, such as operation at two or three power levels and good depressed collector characteristics. -
周文表,過壓提高均勻螺距行波管效率的大信號計算,中國科學院電子學研究所內(nèi)部報告,1979年.[5]周文表,電子學通訊,2(1980), 72. -
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