Large-Signal Simulations of a Gyrotron Traveling-Wave Amplifier With a Mode-Selective Interaction Circuit

Jiao, Chongqing; Luo, Jirun

doi:10.1007/s10762-006-9147-y

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Large Signal Simulations1

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2007

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“…In this section, a large signal simulation code developed according to the theory presented in the references [9,29] is used to study the large signal characteristics of the frequencydoubling gyro-TWT with the following parameters: 70 kV,15 A, á=1.2, L 1 =10 cm, ρ= 145000ρ cu , and B 0 =0.631 T. The calculated saturated power, efficiency and gain are shown in Figs. 4 and 5 respectively.…”

Section: Large Signal Simulationsmentioning

confidence: 99%

Preliminary Design of a Harmonic-doubling Gyrotron Traveling Wave Amplifier

Jiao

Luo

2007

Int J Infrared Milli Waves

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This study proposes a Ka-band harmonic-doubling gyrotron traveling-wave amplifier (gyro-TWT), using distributed wall losses in the input stage and mode-selective interaction circuit in the output stage, to improve the stability of the amplification. Based on a large signal simulation code, a saturated peak power of 163 kW with an efficiency of 15.5%, a gain of 31.1 dB, and a 3 dB bandwidth of 0.9 GHz is predicted for the gyro-TWT driven by 70 kV, 15 A electron beam with a velocity ratio of 1.2 and velocity spread 5% at 33.2 GHz.

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Section: Large Signal Simulationsmentioning

confidence: 99%