Ka-band relativistic diffraction generator with a tapered coaxial Bragg reflector
Ka-band relativistic diffraction generator with a tapered coaxial Bragg reflector
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带有锥形同轴布拉格反射器的 Ka 波段相对论衍射发生器
DOI:
10.1063/1.4998208
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发表时间:
2017-11
期刊:
影响因子:
1.6
通讯作者:
Zongjun Shi
中科院分区:
文献类型:
--
作者:
Feng Lan;Ziqiang Yang;Pinaki Mazumder;Zongjun Shi
A coaxial line with periodically tapered inner rode corrugated ripples is introduced to act as a distributed Bragg reflector to increase output microwave power of relativistic diffraction generator (RDG). The RDG device consists of an overmoded cross-section, two-sectional disk-loaded cylindrical slow-wave structure (SWS), and coaxial reflector is placed upstream at the first SWS section. The RDG device with tapered Bragg reflector is investigated by full three-dimensional Particle-in-Cell (PIC) simulations and experiments in this paper. The structural parameters of the reflector are optimized for favorable characteristic of mode selection and frequency response. It is found that oscillation modes varied at different magnetic field magnitude. The measured radiation power at 29∼31 GHz is over 300 MW for TM01 mode and over 700 MW for TM11 mode. Results show that the reflector has a great impact on performance of the device. Operating at proper conditions, the radiation power is remarkably enhanced.
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DOI:
10.1063/1.2782761
发表时间:
2007-09
期刊:
The Review of scientific instruments
影响因子:
--
作者:
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DOI:
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发表时间:
2005-01
期刊:
Journal of Physics D: Applied Physics
影响因子:
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C. Qiu;Shi-Chang Zhang;Hui-Bo Zhang;Y. Lai
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影响因子:
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影响因子:
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