Partly gain-clamped EDFAs with high gain and high power

1999 ◽  
Author(s):  
Yanhong Xiao ◽  
Xiaoming Liu ◽  
Jingcui Cui ◽  
Qun Li ◽  
Dan Liu ◽  
...  
Keyword(s):  
High Power ◽  
High Gain

scholarly journals Interleaved, Switched Inductor and High-Gain Wide Bandgap Based Boost Converter Proposal

Energies ◽  
2021 ◽  
Vol 14 (4) ◽  
pp. 800
Author(s):  
David Marroqui ◽  
Ausias Garrigós ◽  
Cristian Torres ◽  
Carlos Orts ◽  
Jose M. Blanes ◽  
...  
Keyword(s):  
Power Density ◽  
High Power ◽  
Low Voltage ◽  
High Gain ◽  
Wide Bandgap ◽  
High Power Density ◽  
Boost Converters ◽  
Proposal A ◽  
Current Ripples ◽  
Current Ripple

Many applications (electric vehicles, renewable energies, low-voltage DC grids) require simple, high-power density and low-current ripple-boost converters. Traditional step-up converters are limited when large transformation ratios are involved. In this work is proposed a step-up converter that brings together the characteristics of high gain, low ripple, and high-power density. From the converter proposal, a mathematical analysis of its operation is first performed, including its static transfer function, stress of components, and voltage and current ripples. Furthermore, it provides a design example for an application of Vin = 48 V to Vo = 270 V and 500 W. For its implementation, two different wide bandgap (WBG) semiconductor models have been used, hybrid GaN cascodes and SiC MOSFETs. Finally, the experimental results of the produced prototypes are shown, and the results are discussed.

Investigation of an ${X}$ -Band Long Pulse High-Power High-Gain Coaxial Multibeam Relativistic Klystron Amplifier

2019 ◽  
Vol 66 (1) ◽  
pp. 722-728 ◽  
Author(s):  
Zhenbang Liu ◽  
Hua Huang ◽  
Xiao Jin ◽  
Shifeng Li ◽  
Tengfang Wang ◽  
...  
Keyword(s):  
High Power ◽  
High Gain ◽  
Long Pulse ◽  
Relativistic Klystron

Research on synchronization of 15 parallel high gain photoconductive semiconductor switches triggered by high power pulse laser diodes

2015 ◽  
Vol 106 (2) ◽  
pp. 022108 ◽  
Author(s):  
Wei Wang ◽  
Liansheng Xia ◽  
Yi Chen ◽  
Yi Liu ◽  
Chao Yang ◽  
...  
Keyword(s):  
Pulse Laser ◽  
High Power ◽  
Laser Diodes ◽  
High Gain ◽  
Semiconductor Switches ◽  
Power Pulse ◽  
High Power Pulse

High-gain wideband high-power 200-GHz multiple-beam serpentine TWT design

2010 ◽  
Author(s):  
Khanh Nguyen ◽  
Lars Ludeking ◽  
John Pasour ◽  
Dean Pershing ◽  
Edward Wright ◽  
...  
Keyword(s):  
High Power ◽  
High Gain ◽  
Multiple Beam

High-Power-Density and High-Gain δ-Doped In[sub 0.425]Al[sub 0.575]As∕In[sub 0.425]Ga[sub 0.575]As Low-Voltage for Operation

2007 ◽  
Vol 154 (3) ◽  
pp. H185 ◽  
Author(s):  
Jun-Chin Huang ◽  
Wei-Chou Hsu ◽  
Ching-Sung Lee ◽  
Dong-Hai Huang ◽  
Yuan-Cheng Yang
Keyword(s):  
Power Density ◽  
High Power ◽  
Low Voltage ◽  
High Gain ◽  
High Power Density

scholarly journals Design of a Novel High Power V-Band Helix-Folded Waveguide Cascaded Traveling Wave Tube Amplifier

2015 ◽  
Vol 2015 ◽  
pp. 1-9 ◽  
Author(s):  
Tianxiang Zhuge ◽  
Yulu Hu
Keyword(s):  
High Power ◽  
Traveling Wave ◽  
High Gain ◽  
Theory Model ◽  
60 Ghz ◽  
Traveling Wave Tube ◽  
Wave Tube ◽  
Folded Waveguide ◽  
Saturated Gain ◽  
V Band

A design of a V-band Helix-Folded Waveguide (H-FWG) cascaded traveling wave tube (TWT) is presented. In this cascaded structure, a digitized nonlinear theory model is put forward first to simulate these two types of the tubes by common process. Then, an initial design principle is proposed, which can design these two different kinds of tubes universally. Using this principle, a high-gain helix TWT is carefully designed as a first stage amplifier followed by a FWG TWT to obtain high power. Simulations predict that a peak power of 800 W with saturated gain of 60 dB from 55 GHz to 60 GHz can be achieved.

High gain broadband Yb:CaF2 booster amplifier pumped by a 976 nm high power fiber laser

2015 ◽  
Author(s):  
P. Sevillano ◽  
P. Camy ◽  
J.-L. Doualan ◽  
J. Limpert ◽  
R. Moncorgé ◽  
...  
Keyword(s):  
Fiber Laser ◽  
High Power ◽  
High Gain
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