Changhua Chen
Xi'an Jiaotong University
79 Papers
577 Citations
Changhua Chen is an academic researcher from Xi'an Jiaotong University. The author has contributed to research in topics: Backward-wave oscillator & Microwave. The author has an hindex of 17, co-authored 73 publications.
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Papers
Review of recent theories and experiments for improving high-power microwave window breakdown thresholdsa)
TL;DR: In this article, the mechanisms of multipactor suppression for periodic rectangular and triangular surface profiles by dynamic analysis and particle-in-cell simulations are surveyed, and the current theories and experiments of using dc magnetic field to resonantly accelerate electrons to suppress multipactor are also synthesized.
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A repetitive X-band relativistic backward-wave oscillator
TL;DR: In this article, a relativistic backward wave oscillator (SWO) driven by a SINUS-881 accelerator is described, with peak current of 5.4 kA and voltage of 610 kV at a repetition rate of 100 Hz.
99
A high-efficiency overmoded klystron-like relativistic backward wave oscillator with low guiding magnetic field
TL;DR: In this paper, a klystron-like relativistic backward wave oscillator with a ratio of transverse dimension to free-space wavelength being about four was presented, and the particle in cell simulation results reveal that microwaves with a power of 2'GW and a frequency of 12.3 GHz are generated with an efficiency of 42% when the diode voltage is 400'kV, the beam current 12'kA, and magnetic field 0.48'T.
58
A Ka-band TM02 mode relativistic backward wave oscillator with cascaded resonators
TL;DR: By combining the Cerenkov-type generator with the cascaded resonators, a Ka-band relativistic backward wave oscillator operating under the guide magnetic field 1.0 T with high power handling capability and high conversion efficiency was proposed in this paper.
53
A millimeter wave relativistic backward wave oscillator operating in TM03 mode with low guiding magnetic field
TL;DR: In this paper, a V-band overmoded relativistic backward wave oscillator (RBWO) guided by low magnetic field and operating on a TM03 mode is presented to increase both the power handling capacity and the wave-beam interaction conversion efficiency.
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