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Your search keyword '"Zhou, Yihong"' showing total 10 results
Start Over Author "Zhou, Yihong" Journal ieee transactions on electron devices
10 results on '"Zhou, Yihong"'

1. An Efficient Low-Magnetic-Field-Operation Superradiant Relativistic Backward-Wave Oscillator With Front Extraction Structure

Author

Cheng, Renjie, primary, Wu, Ping, additional, Li, Tianming, additional, Wang, Jiaoyin, additional, Zhang, Guangshuai, additional, Sun, Jun, additional, Wang, Haiyang, additional, Li, Hao, additional, Zhou, Yihong, additional, Yang, Mingyu, additional, Ou, Meiling, additional, Ghannouchi, Fadhel M., additional, and Hu, Biao, additional

Published
2023
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3. Phase-Locked All-Cavity-Extraction Relativistic Magnetrons With Azimuth-Uniform Coupling Structure for Coherent Combining Applications

Author

Cheng, Renjie, Xiao, Renzhen, Li, Tianming, Wang, Jiaoyin, He, Chaoxiong, Wang, Haiyang, Li, Hao, Zhou, Yihong, Yang, Mingyu, Ou, Meiling, Chen, Tingxu, Ghannouchi, Fadhel M., and Hu, Biao

Abstract

An investigation on the phase locking of S-band relativistic magnetrons with an all-cavity-extraction (ACE-RM) structure is carried out. In order not to disrupt the periodic distribution of electric fields in the resonant cavities, an azimuth-uniform coupling structure is introduced, which could achieve a transmission efficiency of over 98% at the operating frequency, with an amplitude difference of only ±3.3%. Furthermore, particle-in-cell (PIC) simulations demonstrate that when five ACE RMs are interconnected through four such coupling structures, phase locking can be achieved, and the relative phase jitters are controlled within ±1%. After establishing stable $\pi $ -mode oscillation in RMs, in each of the 20 ports, an average output power of over 400 MW can be obtained, corresponding to a total power of 8.5 GW and a power conversion efficiency of 45%.

Published
2023
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10. Compact L-Band Relativistic Magnetron With Diffraction Output of TEM Mode.

Author

He, Chaoxiong, Li, Tianming, Cheng, Renjie, Wang, Haiyang, Li, Hao, Zhou, Yihong, Wang, Keqiang, Ghannouchi, Fadhel M., and Hu, Biao

Subjects
GYROTRONS, MAGNETRONS, SLOW wave structures, CAVITY resonators, PHASE velocity, COMPACTING
Abstract

A compact L-band relativistic magnetron (RM) with the diffraction output (DO) of the TEM mode is proposed. In this DO configuration, a ridged circular waveguide is used to replace the cylindrical waveguide to decrease its radial dimension. The RF field of the operating π-mode is extracted from every resonator cavity and guided to the ridged circular waveguide. Even at the operating frequency of 1.55 GHz, the ridged circular waveguide can reduce the cutoff radius of the RF wave to 73 mm. The output RF field is further effectively converted to the TEM mode by a compact mode converter. Moreover, in the resonant system, a 10-cavity rising-sun slow wave structure (SWS) is applied to lower the phase velocity of the operating spatial harmonic and enhance the mode separation between the operating mode and the adjacent mode. The particle-in-cell (PIC) simulations demonstrate that the practical RM could output a relatively pure TEM mode at the frequency of 1.55 GHz, and its total efficiency is up to 60% with gigawatt radiation power for a diode voltage of 400 kV. [ABSTRACT FROM AUTHOR]

Published
2019
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