Open AccessLarge‐signal analytical approach to a disc‐loaded gyro‐TWT amplifier
Author(s) -
Singh Rajiv Kumar
Publication year - 2015
Publication title -
iet microwaves, antennas and propagation
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.555
H-Index - 69
eISSN - 1751-8733
pISSN - 1751-8725
DOI - 10.1049/iet-map.2015.0067
Subject(s) - amplifier , traveling wave tube , radius , signal (programming language) , optics , physics , waveguide , power (physics) , computer science , optoelectronics , computer security , cmos , quantum mechanics , programming language
In the present study, large‐signal analysis of a disc‐loaded gyro‐travelling wave tube amplifier has been presented. For this purpose, analytical theory for non‐linear analysis of an arbitrary‐shaped interaction structure has been extended for a disc‐loaded interaction structure. Power profile results of the present theory, taking waveguide disc‐hole radius equal to waveguide‐wall radius where the structure becomes a smooth wall circular waveguide, closely matches with the published results of a circular waveguide. Comparison of already published small‐signal theory results and the present large‐signal theory has been done and a fair agreement (within 4%) has been achieved. Spatial power and efficiency profile for a disc‐loaded gyro‐traveling wave tube with structure parameters r D / r W = 0.6, L / r W = 0.4 and T / r W = 0.1 operating in TE 02 ‐mode at 91.4 GHz has been presented.