Title :
Cathode voltage adjustment to compensate helix pitch tolerance in TWTs
Author :
Agostino, S.D. ; Paoloni, C.
Author_Institution :
Dept. of Electron. Eng., Univ. of Roma ´´La Sapienza´´, Italy
Abstract :
The correct definition of helix pitch profile in multisection helix travelling-wave tubes is fundamental to obtain the required performance. The impact of tolerances on helix pitch manufacturing is a relevant reason for significant degradation of the small-signal gain. A detailed study analysing the effectiveness of compensating the effect of helix pitch error by a cathode voltage adjustment is proposed.
Keywords :
electron tube manufacture; measurement errors; slow wave structures; tolerance analysis; cathode voltage adjustment; helix pitch error; helix pitch manufacturing; helix pitch tolerance compensation; helix slow-wave structure; manufacturing tolerance effects; multisection helix travelling-wave tubes; performance degradation; random error; small-signal gain; systematic error; yield reduction;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:20040063
