Wang Shaomeng, Hou Yan, Wei Yanyu, et al. Study on 800 V traveling-wave tube[J]. High Power Laser and Particle Beams, 2013, 25: 1613-1614. doi: 10.3788/HPLPB20132507.1613
Citation:
Wang Shaomeng, Hou Yan, Wei Yanyu, et al. Study on 800 V traveling-wave tube[J]. High Power Laser and Particle Beams, 2013, 25: 1613-1614. doi: 10.3788/HPLPB20132507.1613
Wang Shaomeng, Hou Yan, Wei Yanyu, et al. Study on 800 V traveling-wave tube[J]. High Power Laser and Particle Beams, 2013, 25: 1613-1614. doi: 10.3788/HPLPB20132507.1613
Citation:
Wang Shaomeng, Hou Yan, Wei Yanyu, et al. Study on 800 V traveling-wave tube[J]. High Power Laser and Particle Beams, 2013, 25: 1613-1614. doi: 10.3788/HPLPB20132507.1613
A slow-wave structure (SWS) named micro-strip angular log-periodic meander-line is proposed for a low operating voltage vacuum amplifier. It evolves from the logarithmic spiral by cutting off a fan-shaped part and connecting the ends alternately. This letter reports the electromagnetic characteristics of this kind of SWS, and the beam-wave interaction is calculated by means of the particle-in-cell (PIC) method. From our calculation, this kind of traveling-wave tube can give 26 W output power with the 3 dB frequency range of 27-46 GHz, while the operating voltage is 809 V only. Moreover, the maximum gain and interaction efficiency are about 26.5 dB and 21.7%, respectively. Through power combination of SWSs of this kind, power of hundreds of watts can be output.
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