Coupling output of multichannel high power microwaves

Li, Guolin; Shu, Ting; Yuan, Chengwei; Zhang, Jun; Yang, Jian; Jin, Zhenxing; Yin, Yajun; Wu, D.Q.; Zhu, Jiahui; Heming, Ren; Yang, Jie

doi:10.1063/1.3524563

Cited by 7 publications

(6 citation statements)

References 23 publications

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“…The high power experiments are carried out on a dualbeam accelerator to drive two overmoded HPM generators simultaneously, 16 and Fig. 5 gives the experimental setup for combining X=X band HPM beams.…”

Section: Methodsmentioning

confidence: 99%

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T-junction waveguide-based combining high power microwave beams

2011

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Waveguide-based combining microwave beams is an attractive technique for enhancing the output capacities of narrow-band high power microwave devices. A specific T-junction combiner is designed for combining the X=X band microwave beams, and the detailed combining method and experimental results are presented. In the experiments, two microwave sources which can generate gigawatt level microwaves are driven by a single accelerator simultaneously, and their operation frequencies are 9.41 and 9.60 GHz, respectively. The two microwave beams with durations of about 35 ns have been successfully combined, and no breakdown phenomenon occurs.

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Section: Methodsmentioning

confidence: 99%

“…In the previous investigations on HPM combining systems, the diplexer suggested by Li et al is a promising technique for HPM applications. [15][16][17] Unfortunately, it usually suffers from big size, and dispersion or diffraction problems cannot be solved easily, either.…”

Section: Introductionmentioning

confidence: 99%

T-junction waveguide-based combining high power microwave beams

2011

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“…Thus, a new technique named high power microwave combination is put forward to further increase the outputs of HPM sources. [1][2][3][4][5][6] In order to effectively realize the power combination of multiple HPM devices, the sources must be at the same frequency and be phase coherent, i.e., phase constant within one pulse and phase stable from pulse to pulse. Compared with the HPM oscillators, the HPM amplifiers are more stable in frequency and phase because they respond well to the characteristics of the external injection signals.…”

Section: Introductionmentioning

confidence: 99%

Design and 3D simulation of a two-cavity wide-gap relativistic klystron amplifier with high power injection

2012

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By using an electromagnetic particle-in-cell (PIC) code, an S-band two-cavity wide-gap klystron amplifier (WKA) loaded with washers/rods structure is designed and investigated for high power injection application. Influences of the washers/rods structure on the high frequency characteristics and the basic operation of the amplifier are presented. Generally, the rod structure has great impacts on the space-charge potential depression and the resonant frequency of the cavities. Nevertheless, if only the resonant frequency is tuned to the desired operation frequency, effects of the rod size on the basic operation of the amplifier are expected to be very weak. The 3-dimension (3-D) PIC simulation results show an output power of 0.98 GW corresponding to an efficiency of 33% for the WKA, with a 594 keV, 5 kA electron beam guided by an external magnetic field of 1.5 Tesla. Moreover, if a conductive plane is placed near the output gap, such as the electron collector, the beam potential energy can be further released, and the RF power can be increased to about 1.07 GW with the conversion efficiency of about 36%. V C 2012 American Institute of Physics.

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“…During the past decades, different narrow-band HPM devices have been developed extensively and one of the remaining efforts is still focusing on increasing the output peak power levels [3][4][5][6][7][8][9][10][11]. One method for realising this goal is by utilising power combining technologies [12][13][14]. Compared with coherent power combining techniques, waveguide-based incoherent power combining systems are much more effective and easier to realise in reality.…”

Section: Introductionmentioning

confidence: 99%

“…Compared with coherent power combining techniques, waveguide-based incoherent power combining systems are much more effective and easier to realise in reality. As mentioned in former literatures [13,14], for waveguide-based incoherent power combining technologies, the combiner should have high power-handling capacity, high transmission efficiency and good isolation of each combining channel. Furthermore, many HPM sources usually generate TM01 circular waveguide (Cir.…”

Section: Introductionmentioning

confidence: 99%

Waveguide‐based combining S‐band high power microwaves

Zhang

Peng

Yuan

et al. 2014

IET Microwaves, Antennas & Propagation

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Incoherent power combining system is a promising technique for enhancing the output power level of narrow‐band high‐power microwave devices, and waveguide‐based combiner usually has the virtues of high transmission efficiency, proper bandwidth and high power‐handling capacity within a compact structure. A specific cross‐junction combiner is proposed for combining the S/S band microwave beams, and the detailed simulation and experimental results are presented. The investigations show that the combiner realises integration of GW level power combination and mode conversion from two microwave sources simultaneously.

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Coupling output of multichannel high power microwaves

Cited by 7 publications

References 23 publications

T-junction waveguide-based combining high power microwave beams

T-junction waveguide-based combining high power microwave beams

Design and 3D simulation of a two-cavity wide-gap relativistic klystron amplifier with high power injection

Waveguide‐based combining S‐band high power microwaves

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