2011
DOI: 10.1063/1.3626564
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T-junction waveguide-based combining high power microwave beams

Abstract: 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, respectivel… Show more

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Cited by 15 publications
(7 citation statements)
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“…The power combination can be either the spatial coherent combination of an array of phase-locked sources [10][11][12][13][14][15] or the waveguide-based power summation of multiple sources. [16][17][18] Three typical parameters, i.e., output power, conversion efficiency, and pulse width interact with and constrain each other. Specifically, enhancement of the beam-wave interaction leads to the increase of both the output power and the efficiency of a HPM source, and also leads to the ascending coupling strength between the beam and the slow wave structure (SWS).…”
Section: Introductionmentioning
confidence: 99%
“…The power combination can be either the spatial coherent combination of an array of phase-locked sources [10][11][12][13][14][15] or the waveguide-based power summation of multiple sources. [16][17][18] Three typical parameters, i.e., output power, conversion efficiency, and pulse width interact with and constrain each other. Specifically, enhancement of the beam-wave interaction leads to the increase of both the output power and the efficiency of a HPM source, and also leads to the ascending coupling strength between the beam and the slow wave structure (SWS).…”
Section: Introductionmentioning
confidence: 99%
“…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%
“…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%