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A study on helix pitch tolerance impact on TWT small-signal gain

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2 Author(s)
D'Agostino, S. ; Dept. of Electron. Eng., Univ. of Roma "La Sapienza", Italy ; Paoloni, C.

Traveling-wave tubes (TWTs) consist of several sections with different helix pitch to provide the required small-signal gain. An extensive study aiming to improve the comprehension of the effect of the helix pitch manufacturing tolerances on the TWT small-signal gain has been completed. The obtained results demonstrate the relevant impact on the TWT small-signal gain when the helix pitch deviates from its nominal value and allow devising a tuning procedure for the realized tubes.

Published in:

Electron Device Letters, IEEE  (Volume:23 ,  Issue: 12 )