Broadband multimodal THz waveguides for efficient transfer of high-power radiation in space-confined conditions

2021 ◽  
Vol 143 ◽  
pp. 107375
Author(s):  
Anatoly R. Melnikov ◽  
Arkady A. Samsonenko ◽  
Yaroslav V. Getmanov ◽  
Oleg A. Shevchenko ◽  
Darya A. Shevchenko ◽  
...  
Keyword(s):  
High Power ◽  
Power Radiation ◽  
High Power Radiation ◽  
Thz Waveguides ◽  
Efficient Transfer

Radiation of Charge Moving Between Two Planar Periodic Wire Structures

2020 ◽  
Vol 23 (1) ◽  
pp. 66-71
Author(s):  
E. A. Gurnevich ◽  
I. V. Moroz
Keyword(s):  
Angular Distribution ◽  
Charged Particle ◽  
Research And Development ◽  
High Power ◽  
Free Electron ◽  
Radiation Intensity ◽  
Free Electron Lasers ◽  
Radiation Sources ◽  
Power Radiation ◽  
High Power Radiation

The Smith-Purcell radiation of a charged particle moving in a periodic structure is analysed theoretically. The considered structure consists of two planar diffraction gratings with different periods which are formed by parallel conducting wires. The analytical expression for the spectral-angular distribution of radiation is obtained. It is shown that the angular distribution of radiation can be made narrower by using two gratings instead of one, and radiation intensity can be manipulated by parallel relative shift of gratings. The obtained results are of great importance for the research and development of high power radiation sources based on volume free-electron lasers.

Photoconductive Semiconductor Switches for High Power Radiation

1993 ◽  
pp. 29-36 ◽  
Author(s):  
G. M. Loubriel ◽  
F. J. Zutavern ◽  
G. J. Denison ◽  
W. D. Helgeson ◽  
D. L. McLaughlin ◽  
...  
Keyword(s):  
High Power ◽  
Semiconductor Switches ◽  
Power Radiation ◽  
High Power Radiation

Design and realization of a self-actuated frequency-selective radome integrated with microstrip antenna

2018 ◽  
Vol 10 (8) ◽  
pp. 883-890
Author(s):  
Qihui Zhou ◽  
Peiguo Liu ◽  
Bo Yi ◽  
Dingwang Yu
Keyword(s):  
High Power ◽  
Microstrip Antenna ◽  
Anechoic Chamber ◽  
Transmission Performance ◽  
Waveguide System ◽  
L Band ◽  
Frequency Selective ◽  
Power Radiation ◽  
High Power Radiation ◽  
Integration Analysis

AbstractIn this paper, a self-actuated frequency-selective radome is presented and applied to a microstrip antenna. The radome acts as a self-triggered switchable screen to achieve adaptive electromagnetic protection in the L band. A prototype of the radome is fabricated to measure its transmission performance. The switchable characteristic is verified by a high-power radiation experiment carried out in a waveguide system. Besides, the antenna is placed under the radome to realize integration analysis, and the radiation performance of the composite antenna radome is measured in the anechoic chamber.

scholarly journals Pseudospark-sourced beam and its application in high-power millimeter-wave generation

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Liang Zhang ◽  
Huabi Yin ◽  
Wenlong He ◽  
Xiaodong Chen ◽  
Jin Zhang ◽  
...  
Keyword(s):  
Electron Beam ◽  
Millimeter Wave ◽  
Cross Sections ◽  
High Power ◽  
High Current Density ◽  
High Current ◽  
Long Distance ◽  
Extended Interaction ◽  
Power Radiation ◽  
High Power Radiation

AbstractA pseudospark (PS) discharge can generate an electron beam with a high current density. The electron beam can be self-focused by an ion channel and transported over a long distance without the need for an external magnetic field. Such features make it attractive to drive millimeter-wave/THz interaction circuits for the generation of high-power radiation from a compact device. This paper presents the experimental results on the generation and transportation of the PS-sourced beam with different cross-sections, as well as the differences of the PS-sourced beam with and without post acceleration. Its application in millimeter-wave/THz sources was demonstrated by the operation of extended interaction oscillators (EIOs) at different frequencies is presented.

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