Terahertz source amplification device based on multiple cascaded high-frequency structures

Abstract

The invention provides a terahertz source amplifying device based on a multiple-cascade high-frequency structure. The terahertz source amplifying device is a cascaded multi-electron-beam terahertz radiation source combining a backward wave amplifier and a traveling wave amplifier. A THz excitation signal is input to the backward wave amplifier and is amplified through backward wave electron beam-wave interaction, a backward wave signal is output to a traveling wave high-frequency structure through dual ports, multistage amplification and band broadening are realized through multiple beam-wave interaction at a traveling wave section, and power synthesis is carried out on signals output by the multiple-cascade structure. The terahertz source amplifying device based on multiple-cascade high-frequency structure has the characteristics of high power, high gain and wide band, has absolute advantages in implementing a THz integrated vacuum electronic device and has important application prospects in aspects such as THz radar, communication, danger detection and imaging.

Description

technical field [0001] The invention relates to the technical field of vacuum electronic devices, in particular to a terahertz source amplification device based on a multi-cascaded structure as an excitation source with a return wave amplifier. Background technique [0002] Terahertz (Terahertz, 1THz=10 12 Hz) waves refer to electromagnetic waves with frequencies in the 0.1-10 THz band, located between infrared and microwave, and in the transition zone from macroelectronics to microphotonics. THz waves have the characteristics of transient, broadband, coherence, and low energy. Imaging), non-destructive testing, safety inspection (biochemical inspection) and other fields have brought far-reaching impact. As a frequency band resource that has yet to be further developed, the THz frequency band has a huge military demand space in the military, especially in radar and target recognition, broadband communication, military reconnaissance, dangerous object detection and non-dest...

AI Technical Summary

Problems solved by technology

[0007] (1) For a single-stage traveling wave tube amplifier, power amplification and frequency band broadening can be achieved, but the output signal bandwidth of the current THz band traveling wave tube amplifier is narrow, which limits its radar target detection in electronic countermeasures. On the other hand , the output power level of the single-stage traveling wave tube needs to be improved, which has greatly restricted its application in ultra-wideband radar long-distance detection, high-resolution imaging radar, etc.

[0008] At present, a THz extended interaction oscillator has been developed. Although it can achieve higher repetition frequency and higher output power, it cannot output broadband signals, which is not conducive to the application of anti-jamming and imaging systems.

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