Relativistic BWO With Linearly Polarized Gaussian Radiation Pattern

Elfrgani, Ahmed; Prasad, Sudhakar; Fuks, Mikhail; Schamiloglu, E.

doi:10.1109/tps.2014.2331345

Cited by 13 publications

(3 citation statements)

References 16 publications

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“…4 a , a simplified measurement setup using short HPM pulses is shown. The output pulse of the electron beam accelerator ‘SINUS‐6’ is applied to the backward wave oscillator–slow‐wave structure (BWO–SWS) [10, 26]. The SINUS‐6 can provide voltages up to 700 kV to a cathode with

130 normalΩ

load impedance in a 13 ns pulse.…”

Section: Measurement Setupmentioning

confidence: 99%

“…All of these methods have their strengths and weaknesses. The recent development of high‐speed oscilloscopes, especially a decrease in their price, led to the point that they started to be more widely used for HPM signal measurements [9, 10]. In order not to damage the oscilloscope, the HPM pulse should be highly attenuated and this could lead to a decrease of measurement accuracy.…”

Section: Introductionmentioning

confidence: 99%

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Short‐pulse HPM measurements using a resistive sensor

Ragulis

Andreev²,

Alleluia³

et al. 2020

IET Microwaves, Antennas & Propagation

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130 normalΩ

load impedance in a 13 ns pulse.…”

Section: Measurement Setupmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Short‐pulse HPM measurements using a resistive sensor

Ragulis

Andreev²,

Alleluia³

et al. 2020

IET Microwaves, Antennas & Propagation

Self Cite

View full text Add to dashboard Cite

“…To produce dual-frequency microwaves, many different dual-frequency devices have been elaborated, including the magnetically insulated line oscillator (MILO) and the relativistic backward wave oscillator (RBWO) [10]- [12]. Ginzburg et al [13] investigated dual-frequency RBWO with sectioned slow wave structures (SWSs) based on a single relativistic electron-beam.…”

Section: Introductionmentioning

confidence: 99%

Experimental Research of X-Band Dual-Frequency Coaxial Relativistic Backward Wave Oscillator

Zhu

Tang

et al. 2020

IEEE J. Electron Devices Soc.

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The design and experimental demonstration of an X-band coaxial dual-frequency relativistic backward wave oscillator (CRBWO) with sectioned slow wave structures (SWSs) is presented. In this paper, we describe the experimental measurement methods of frequency, power and operation mode for the high-power microwave signal. In experimental tests, with a 500 kV, 11.5 kA beam guided by a 0.82 T magnetic field, a microwave with an average power of 507 MW and pulsewidth of 50 ns has been obtained. Also, the dominant frequencies of the X-band dual frequency are 9.845 GHz and 10.517 GHz, and the dual-frequency difference ≈ 672 MHz, which was similar to the particle-in-cell simulation results. The operation mode of the device is determined to be TM01 mode in our experiment.

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Direct excitation of TE11 mode in a relativistic backward wave oscillator

Xiao

Zhang

et al. 2016

Physics of Plasmas

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A relativistic backward wave oscillator for directly generating TE11 mode is proposed. An axially asymmetric slow wave structure and a sectioned annular cathode are introduced to suppress the TM01 mode and excite the TE11 mode. A pre-modulation dual-cavity, which allows part of the backward power to propagate into the diode region, is adopted to optimize the electron beam bunch, indicating that the conventional design principle that the diode region and the beam-wave interaction region should be isolated can be broken to increase the interaction efficiency. Particle-in-cell simulations show that when the diode voltage is 780 kV, and beam current is 6.1 kA, a microwave with power of 2.0 GW, and frequency of 9.25 GHz can be obtained, corresponding to an efficiency of 42%. Furthermore, the main output mode is TE11 mode, and the power of the cross-polarized mode is less than 10% within the calculation time of 50 ns.

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Relativistic BWO With Linearly Polarized Gaussian Radiation Pattern

Cited by 13 publications

References 16 publications

Short‐pulse HPM measurements using a resistive sensor

Short‐pulse HPM measurements using a resistive sensor

Experimental Research of X-Band Dual-Frequency Coaxial Relativistic Backward Wave Oscillator

Direct excitation of TE11 mode in a relativistic backward wave oscillator

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