0.34 THz travelling wave tube

Abstract

The invention relates to a 0.34 THz travelling wave tube, and belongs to the field of microwave vacuum electronic devices. The 0.34 THz travelling wave tube comprises a slow wave structure with the waveguide wide-edge length a of 0.5 mm+ / -0.02 mm, the waveguide narrow-edge length b of 0.08 mm+ / -0.02 mm, the half-cycle length p of 0.14 mm+ / -0.02mm, the straight waveguide length h of 0.21 mm+ / -0.02 mm, the bending waveguide radius ravg of 0.02 mm+ / -0.01 mm, and the electron beam channel radius rt of 0.09 mm+ / -0.01 mm, and a microwave window with the window plate thickness of 0.1 mm+ / -0.02 mm, the diameter of 1.8 mm+ / -0.05 mm, the cylindrical resonant cavity diameter of 1.2 mm+ / -0.05 mm, and the height of 0.1 mm+ / -0.05 mm. According to the 0.34 THz travelling wave tube, the bandwidth reaches 2 GHz, the gain reaches 20 dB, the output power reaches 130 mW, the requirement of a 0.34 THz frequency-band terahertz application system is met, and the 0.34 THz travelling wave tube can be applied to the terahertz radar and the terahertz communication system.

Description

technical field [0001] The invention relates to the field of microwave vacuum electronic devices, in particular to a 0.34THz traveling wave tube. Background technique [0002] With the development of science and technology, the spectrum resources in the low frequency band in the field of wireless communication are increasingly scarce, and it is urgent to expand to higher frequency bands. Terahertz waves refer to 11 Hz to 10 13 The frequency of electromagnetic waves in the Hz range is tens to hundreds of times that of microwaves, and the channel capacity that can be accommodated is much larger than that of microwave frequency bands, which is especially suitable for broadband high-speed wireless data communications. For radar systems, due to the high carrier frequency and short wavelength of terahertz waves, the Doppler frequency shift when detecting moving targets is larger than that of microwaves, which can achieve higher imaging resolution and more precision. positioning....

AI Technical Summary

Problems solved by technology

The long-distance terahertz application system with a working frequency of 0.34THz needs a 0.34THz traveling wave tube as the final amplifier to provide a high-power broadband carrier signal for the system, but the output power of the existing 0.34THz traveling wave tube can only reach about 40mW, which cannot meet Requirements for terahertz application systems in this frequency band

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