A three-dimensional multifrequency large signal model for helix traveling wave tubes

2001 ◽  
Vol 48 (1) ◽  
pp. 3-11 ◽  
Author(s):  
D. Chernin ◽  
T.M. Antonsen ◽  
B. Levush ◽  
D.R. Whaley
Keyword(s):  
Traveling Wave ◽  
Three Dimensional ◽  
Large Signal ◽  
Signal Model ◽  
Traveling Wave Tubes

1-D Large Signal Model of Folded-Waveguide Traveling Wave Tubes

2014 ◽  
Vol 61 (6) ◽  
pp. 1699-1706 ◽  
Author(s):  
David Chernin ◽  
Thomas M. Antonsen ◽  
Alexander N. Vlasov ◽  
Igor A. Chernyavskiy ◽  
Khanh T. Nguyen ◽  
...  
Keyword(s):  
Traveling Wave ◽  
Large Signal ◽  
Signal Model ◽  
Folded Waveguide ◽  
Traveling Wave Tubes

A 3-D Large Signal Model for Sheet Beam Traveling Wave Tubes

2015 ◽  
Vol 62 (3) ◽  
pp. 1010-1016 ◽  
Author(s):  
Wenqiu Xie ◽  
Zi-Cheng Wang ◽  
Jirun Luo ◽  
Ding Zhao
Keyword(s):  
Traveling Wave ◽  
Large Signal ◽  
Signal Model ◽  
Traveling Wave Tubes

Design of coaxial and waveguide couplers for helix TWT

Frequenz ◽  
2021 ◽  
Vol 0 (0) ◽  
Author(s):  
Mukesh Kumar Alaria ◽  
Sanjay Kumar Ghosh
Keyword(s):  
Traveling Wave ◽  
Return Loss ◽  
Characteristic Impedance ◽  
Three Dimensional ◽  
Waveguide Coupler ◽  
Quarter Wavelength ◽  
Different Types ◽  
Waveguide Type ◽  
Transformer Design ◽  
Traveling Wave Tubes

Abstract In this paper, two types of coaxial coupler and waveguide coupler for different frequency helix traveling wave tubes (TWTs) are designed, fabricated and cold tested. The coaxial coupler includes of window ceramic and RF transformer section. At present multi-section impedance transformer design approach is used for wideband helix TWTs. In any helix TWT, impedance of the source is transformed to the characteristic impedance of helix. This is done by the quarter-wavelength (λ/4) impedance transformation approach. The simulated results of different types of couplers are carried out by HFSS and CST microwave studio software and compare with experimental results. Three-dimensional electromagnetic field simulators allowing the any geometry with port excitations it is possible to model the complex coaxial and waveguide type couplers with helix SWS assembly and predict its desired return loss performances.

Large-Signal Investigation of Cold and Hot Matched Coupled-Cavity Traveling-Wave Tubes

Frequenz ◽  
2014 ◽  
Vol 0 (0) ◽  
Author(s):  
Sascha Meyne ◽  
Jean-François David ◽  
Arne F. Jacob
Keyword(s):  
Traveling Wave ◽  
Characteristic Impedance ◽  
Matching Condition ◽  
Wave System ◽  
Small Signal ◽  
Large Signal ◽  
Beam Wave ◽  
Signal Approach ◽  
Traveling Wave Tubes ◽  
Coupled Cavity

AbstractThe implications of different matching conditions for coupled-cavity traveling-wave tubes are considered. Using a small-signal approach the characteristic impedance for the coupled (hot) beam-wave system is derived. It is taken as reference impedance to model ideal transformers and severs. This matching condition is compared to the standard cold match and both cases are analyzed using a large-signal interaction tool. The implications on input reflection and output gain are discussed.

The Study of Traveling Wave Tube Large Signal Model Based on Machine Learning

2021 ◽  
Author(s):  
Niankang Li ◽  
Hairong Yin ◽  
Zhuoyun Li ◽  
Dongdong Jia ◽  
Zhang Shen ◽  
...  
Keyword(s):  
Machine Learning ◽  
Traveling Wave ◽  
Traveling Wave Tube ◽  
Wave Tube ◽  
Large Signal ◽  
Signal Model ◽  
Model Based

Large-Signal 2-D Modeling of Folded-Waveguide Traveling Wave Tubes

2016 ◽  
Vol 63 (6) ◽  
pp. 2531-2537 ◽  
Author(s):  
Igor A. Chernyavskiy ◽  
Thomas M. Antonsen ◽  
Alexander N. Vlasov ◽  
David Chernin ◽  
Khanh T. Nguyen ◽  
...  
Keyword(s):  
Traveling Wave ◽  
Large Signal ◽  
Folded Waveguide ◽  
Traveling Wave Tubes
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