Results 31 to 40 of about 64,113 (168)

Mode selection characteristics in a circular waveguide loaded with a left-handed metamaterial

AIP Advances, 2019
We theoretically study mode selection characteristics in a left-handed metamaterial (LHM) loaded into a circular waveguide. The existent modes in the circular waveguide are closely related to the radius of the coaxially loaded LHM, and a general rule ...
Zhiqiang Fan, Jun Sun, Yibing Cao, Zhimin Song, Ping Wu, Yanchao Shi   +5 more
doaj   +1 more source

High-Efficiency, Broadband Converter From A Rectangular Waveguide TE₁₀ Mode to A Circular Waveguide TM₀₁ Mode for Overmoded Device Measurement

IEEE Access, 2018
To accurately measure the performance of overmoded devices used in high-power microwave systems, a novel structure that effectively converts the TE10 mode in a rectangular waveguide to a high-purity TM01 mode in a circular waveguide is proposed.
Xinhong Cui, Gang Wang, Tingyong Jiang, Hao Shao, Jun Sun, Xiaolong Wu, Xianchen Bai, Xiaowei Zhang, Zhiqiang Zhang   +8 more
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Design and simulation of an S-band compact multi-beam klystron

AIP Advances, 2023
The miniaturization and high power of klystron are the main concerns of accelerators. Multi-beam klystron (MBK) can accommodate higher power and a lower operating voltage than single-beam klystrons, significantly reducing volume and weight.
Xiaobo Lin, Rui Zhang, Li Zuo, Quangui Chao, Bingchuan Xie, Zhicheng Wang, Zhihui Geng, Yunfeng Liao, Xiudong Yang   +8 more
doaj   +1 more source

Effects of transverse electron beam motion in a relativistic backward wave oscillator operating at low guiding magnetic field

AIP Advances, 2020
We found that the electron drift length, L1, between a diode area and a resonant reflector in a relativistic backward wave oscillator operating at a low guiding magnetic field has a periodical influence on device power, which is a special characteristic ...
Huida Wang, Renzhen Xiao, Changhua Chen, Ping Wu, Yanchao Shi   +4 more
doaj   +1 more source

Design and analysis of the output windows of a doorknob structure for high-power P-band klystron

AIP Advances, 2022
This article presents the design, analysis, and simulation for the klystron coaxial radio frequency (RF) output windows. Three new RF windows (Type-2, 3, and 4) are proposed based on the coaxial RF window with a doorknob structure (Type-1) to improve its
Quangui Chao, Rui Zhang, Yong Wang, Bingchuan Xie, Xiaobo Lin   +4 more
doaj   +1 more source

Simulation of a multistage depressed collector with secondary electron emission for a MW-class gyrotron at 170 GHz

AIP Advances, 2021
This paper presents the simulation results of a multistage depressed collector for a MW-class gyrotron. The energy distribution of spent electrons is obtained by a beam–wave interaction code.
Kai Wang, Qianzhong Xue, Shan Zhang, Ding Zhao, Lianzheng Zhang   +4 more
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Experimental study of destructive effects on materials with different energy electron bombardment

AIP Advances, 2021
In the study of breakdown in high power microwave (HPM) devices, researchers pay attention to the plasma effects caused by material ablation under electron bombardment.
Nongchao Tan, Ping Wu, Ye Hua, Jun Sun, Wenhui Huang, Wenhua Huang   +5 more
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Asymmetric modes suppression in Cerenkov device using anisotropic media

AIP Advances, 2019
Asymmetric modes competition in Cerenkov devices were studied with a view to developing a novel method to suppress modes competition, based on loading of the slow-wave structure (SWS) with an anisotropic medium.
Zhiqiang Fan, Jun Sun, Yibing Cao, Zhimin Song, Kaiyan Huang, Ping Wu, Yanchao Shi   +6 more
doaj   +1 more source

Novel double-band input coupler for gyroklystron and gyro-TWT

AIP Advances, 2021
A novel input coupler that can operate in two different frequency bands separately is proposed in this paper. The dual-band (X/Ku) signals are input by two rectangular waveguides, respectively, in particular, a Bragg reflector is inserted in one of the ...
Xiaoyan Wang, Dongping Gao, Yong Wang, Fengzhen Zhang   +3 more
doaj   +1 more source

Theoretical analysis of a 0.22 THz multistage confocal waveguide gyro-TWT with circle-sector-shaped electron beam

AIP Advances, 2021
In order to improve the beam–wave interaction efficiency, a special circle-sector-shaped electron beam is designed and simulated in the confocal waveguide gyrotron traveling-wave tube (gyro-TWT).
Jie Yang, Shouxi Xu, Yong Wang, Xiaoyan Wang   +3 more
doaj   +1 more source