Recent Advance in Long-Pulse HPM Sources With Repetitive Operation in S-, C-, and X-Bands

Zhang, Jun; Jin, Zhenxing; Yang, Jian; Zhong, Huihuang; Shu, Ting; Zhang, Jiande; Qian, Bao‐Liang; Yuan, Chengwei; Li, Zhiqiang; Fan, Yuwei; Zhou, Shengyue; Xu, Long

doi:10.1109/tps.2011.2129536

Cited by 202 publications

(37 citation statements)

References 14 publications

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“…Compared with the maximum electric field strength in Ref. 28, 720 kV/cm in our simulation corresponding to a combined output of 4.0 GW is relatively low, which means our proposed combined source is possible to operate in the long-pulse situation. Besides, proper chamfering process would further lower the field intensity without notably affecting the operation frequency.…”

Section: B Dependence Of the Combination Effect On The Variation Of mentioning

confidence: 64%

“…In Ref. 28, the PIC simulation illustrates that the highest electric field strength of the presented X-band overmoded microwave source is 700 kV/cm when the diode voltage is 780 kV, the beam current is 9.7 kA, and the corresponding output power is 2.3 GW. In the experiment, the source generates 2 GW microwave power with a pulse duration of 81 ns, which is a relatively long pulse at this level of power in Xband.…”

Section: B Dependence Of the Combination Effect On The Variation Of mentioning

confidence: 99%

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Power combination of two phase-locked high power microwave beams from a new coaxial microwave source based on dual beams

Li,

Zhang,

Zhang

et al. 2014

Physics of Plasmas

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The new coaxial high power microwave source based on dual beams has demonstrated two phaselocked output microwave beams generated by its two sub-sources. In order to achieve a single higher output power, we present a three-port waveguide-based power combiner to combine the two microwave beams. Particle-in-cell simulation results show that when the diode voltage is 675 kV and the guiding magnetic field is 0.8 T, a combined microwave with an average power of about 4.0 GW and a frequency of 9.74 GHz is generated; the corresponding power conversion efficiency is 29%. The combination effect of the combiner is further validated in the diode voltage range from 675 kV to 755 kV as well as in the pulse regime. The simulations indicate that the maximum surface axial electric field strength of the electrodynamic structure is 720 kV/cm, which is relatively low corresponding to an output power of 4.0 GW. The stable combined output suggests the probability of long-pulse operation for the combined source. V C 2014 AIP Publishing LLC.

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Section: B Dependence Of the Combination Effect On The Variation Of mentioning

confidence: 64%

Section: B Dependence Of the Combination Effect On The Variation Of mentioning

confidence: 99%

Power combination of two phase-locked high power microwave beams from a new coaxial microwave source based on dual beams

Li,

Zhang,

Zhang

et al. 2014

Physics of Plasmas

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“…The new SWS has twice the interaction impedance of the conventional SWS because it has a lower group velocity [see (1)] and superior mode purity. Further decreasing the group velocity would lead to even higher interaction impedance, however, the operational passband and power handling capabilities of the SWS would be significantly reduced.…”

Section: Sws Performance Comparisonmentioning

confidence: 99%

A Novel Slow-Wave Structure for High-Power <inline-formula> <tex-math notation="LaTeX">$K_{a}$ </tex-math></inline-formula>-Band Backward Wave Oscillators With Mode Control

Chipengo

Zuboraj

Nahar

et al. 2015

IEEE Trans. Plasma Sci.

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We present a novel slow-wave structure (SWS) to significantly enhance the performance of high-power backward wave oscillators (BWOs). The design features a periodic metallic ring insertion and a deeply corrugated cylindrical waveguide. Both serving to improve interaction impedance and flexibility in dispersion curve engineering. A new technique for mode control in waveguides is also introduced. In addition to demonstrating mode control in SWSs, the key aspects of the presented design are mode dominance reversal and a 100% improvement in interaction impedance that can be exploited to achieve greater power conversion efficiency and output mode purity. Performance comparisons on group velocity, phase velocity and interaction impedance of the new SWS versus the conventional corrugated waveguide are provided. We extend the concept of inhomogeneous SWSs by designing a three-section inhomogeneous SWS. Further simulations using a Particle in Cell code of a highly efficient threesection inhomogeneous K a -band BWO generates a peak output power of a 5.92 MW at 27 GHz with a 58% peak efficiency.Index Terms-Backward wave oscillator (BWO), interaction impedance, mode control, slow-wave structure (SWS).

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“…This leads to an increase of electromagnetic compatibility problems [1]. At the same time, reliability and robustness in the presence of threats such as high power microwave sources [2], targeting radars and communication systems, increase. In order to make circuits more robust, it is necessary to study the effects of electromagnetic interference (EMI) at low and high power on electronic systems.…”

Section: Introductionmentioning

confidence: 99%

Effect of Low and High Power Continuous Wave Electromagnetic Interference on a Microwave Oscillator System: From VCO to PLL to QPSK Receiver

Dubois

Laurin²,

Raoult

et al. 2014

IEEE Trans. Electromagn. Compat.

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Recent Advance in Long-Pulse HPM Sources With Repetitive Operation in S-, C-, and X-Bands

Cited by 202 publications

References 14 publications

Power combination of two phase-locked high power microwave beams from a new coaxial microwave source based on dual beams

Power combination of two phase-locked high power microwave beams from a new coaxial microwave source based on dual beams

A Novel Slow-Wave Structure for High-Power <inline-formula> <tex-math notation="LaTeX">$K_{a}$ </tex-math></inline-formula>-Band Backward Wave Oscillators With Mode Control

Effect of Low and High Power Continuous Wave Electromagnetic Interference on a Microwave Oscillator System: From VCO to PLL to QPSK Receiver

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