Short-Length, High-Efficiency S-Band Coaxial Cavity Relativistic Multibeam Klystron Amplifier for Potential High Power Microwave Application

Sun, Limin; Huang, Hua; Li, Shifeng; Liu, Zhenbang; Tan, Jie; Wang, Peng; Basu, B. N.; He, Hongliang; He, Ke; Duan, Zhaoyun

doi:10.1109/led.2022.3200689

Cited by 8 publications

References 21 publications

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The impact of accelerating diode resonances on L-band high-power long-pulse relativistic backward wave oscillator operation

et al. 2023

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An L-band high-power relativistic backward wave oscillator is designed. In the simulation, microwaves centered at 1.6 GHz are generated, with the power of 3.6 GW and the efficiency of 40%. In the preliminary experiment, the pulse duration of the device was only 45 ns, presenting a pulse-shortening phenomenon. Through the 3D particle-in-cell simulation analysis, it was found that the accelerating diode resonances significantly impact the operation of the L-band high power relativistic backward wave oscillator, and the resonance of a TE11 mode in the accelerating diode played the primary role in the pulse shortening. Moreover, we found that choosing the appropriate distance between the cathode baffle and the end of the annular cathode is beneficial to effectively suppress the starting oscillation of the parasitic TE11 mode. In the improved experiment, we changed the distance between the cathode baffle and the end of the annular cathode from previous 5.4 to 4.6 cm. Eventually, when the diode voltage is 650 kV and the diode current is 14 kA, microwaves centered at 1.58 GHz are generated with the power of 3.3 GW, the efficiency of 36%, and the pulse duration above 104 ns.

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The impact of accelerating diode resonances on L-band high-power long-pulse relativistic backward wave oscillator operation

et al. 2023

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Design Scheme of Miniaturized High-Power Microwave Source Based on X-Band MW-Level Klystron

Wang,

Miao

et al. 2024

2024 3rd International Conference on Energy and Electrical Power Systems (ICEEPS)

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Simulation of the Second and Third Harmonic Cavity Relativistic Klystron Amplifier with a Genetic Algorithm in S-band

Sun

Huang

et al. 2023

2023 24th International Vacuum Electronics Conference (IVEC)

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Short-Length, High-Efficiency S-Band Coaxial Cavity Relativistic Multibeam Klystron Amplifier for Potential High Power Microwave Application

Cited by 8 publications

References 21 publications

The impact of accelerating diode resonances on L-band high-power long-pulse relativistic backward wave oscillator operation

The impact of accelerating diode resonances on L-band high-power long-pulse relativistic backward wave oscillator operation

Design Scheme of Miniaturized High-Power Microwave Source Based on X-Band MW-Level Klystron

Simulation of the Second and Third Harmonic Cavity Relativistic Klystron Amplifier with a Genetic Algorithm in S-band

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