scholarly journals Complete and robust light transfer in three-waveguide coupler by shortcut to adiabaticity

AIP Advances ◽  
2020 ◽  
Vol 10 (9) ◽  
pp. 095104
Author(s):  
Wei Huang ◽  
Yun Chen ◽  
Xiaowei Qu ◽  
Shan Yin ◽  
Xintong Shi ◽  
...  
Keyword(s):  
Waveguide Coupler ◽  
Light Transfer

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.

PT-symmetry conditions for hybrid modes in a waveguide coupler

2021 ◽  
Author(s):  
Anton Hlushchenko ◽  
Vitalii Shcherbinin ◽  
Denis Novitsky ◽  
Vladimir Tuz
Keyword(s):  
Pt Symmetry ◽  
Waveguide Coupler

Geometrical light transfer in optical waveguide arrays

2014 ◽  
Vol 14 (3) ◽  
pp. 921-927 ◽  
Author(s):  
Xin-Ding Zhang ◽  
Wen-Jie Liu ◽  
Guang-Fei Yang
Keyword(s):  
Optical Waveguide ◽  
Waveguide Arrays ◽  
Light Transfer

scholarly journals Development of a high-power and ultra-high-vacuum waveguide coupler working at C/X band

2015 ◽  
Vol 39 (5) ◽  
pp. 057007
Author(s):  
Xiang He ◽  
Feng-Li Zhao ◽  
Xiang-Jian Wang
Keyword(s):  
High Power ◽  
High Vacuum ◽  
Ultra High Vacuum ◽  
Waveguide Coupler ◽  
X Band

Analytical expressions for effective indices in a three-waveguide coupler

1995 ◽  
Vol 20 (9) ◽  
pp. 1005 ◽  
Author(s):  
Sangeeta Srivastava ◽  
Enakshi Khular Sharma
Keyword(s):  
Waveguide Coupler ◽  
Analytical Expressions
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