MMAOP framework applicable to terahertz radar and communication system

Abstract

The invention relates to a MMAOP framework applicable to a terahertz radar and communication system. The implementation mode that a multiplier, a mixer, an array, the quasi-optics and a parabolic antenna are combined is adopted for the MMAOP framework, an all-solid high-power terahertz radiation source is obtained, and meanwhile the MMAOP framework is applicable to the terahertz radar and communication system. A receiving link and a transmitting link of the framework are both obtained in an all-solid mode, and thus the MMAOP framework is good in repeatability and can be integrated and be smaller conveniently. According to the framework, the output power of the terahertz source is raised with an array space power synthesis method, and thus the expansibility is good; a small array can be adopted first to acquire medium output power, as the technology improves, the number of arrays is gradually increased, the output power of a single array element is raised, and thus the radiation power is raised.

Description

Technical field [0001] The present invention relates to terahertz communication and radar technology in digital communication, in particular to the MMAOP architecture suitable for terahertz radar and communication systems, namely, Multiplier + Mixer + Array + Quasi-optical transmission (Quasi-Optics) + Parabolic antenna (Parabolic antenna) architecture. Background technique [0002] Terahertz communication and radar are important application areas of terahertz waves. In the terahertz communication and radar system, requirements: ①large bandwidth to meet the requirements of high communication rate and high radar resolution; ②high EIRP (Effective Isotropic Radiated Power) to achieve a long distance Long operating distance; ③Send and receive shared, radar and communication common (in many occasions require the two to share a platform) to simplify the system composition; ④Adapt to multiple modulation formats of radar and communication, such as OOK (ASK), PSK, QAM, FM Etc.; ⑤Try to ...

AI Technical Summary

Problems solved by technology

Since the power level of solid-state power amplifiers is gradually difficult to meet the application requirements, figure 1 The dotted box in the figure is the improvement scheme to be adopted. Through the cascading of electric vacuum amplifiers, the terahertz power output of the order of watts can be realized. The relative bandwidth of the entire transmission link is only about 2%, and because the micromachining technology of electric vacuum devices has not been well resolved, from the public literature, currently only 0.14THz and 0.22 The two THz sample tubes have power output, and it is difficult to meet the application requirements in a short time, resulting in low EIRP of the two architectures, which limits the performance of high-speed terahertz communication and ultra-wideband terahertz radar

Moreover, it is difficult to integrate and miniaturize electric vacuum devices, and high voltage is required during operation, which brings a lot of inconvenience to the application in some occasions

[0008] (2) It is difficult to realize the problem of sending and receiving:

[0011] The waveguide is hard-connected between the transmitting architecture amplifier and the transmitting antenna. On the one hand, the flexibility in the selection of the installation location is poor; on the other hand, in some applications, the antenna is required to be exposed to environments with harsh temperature conditions. (eg ±100°C), and the temperature above it will cause temperature drift of the active amplifier hard-wired to it through conduction, thereby affecting the performance of the amplifier, and even causing it to fail to work properly; moreover, when communication or radar requires alignment search , the entire transmission and reception chain must rotate with the antenna, which affects the flexibility of the servo mechanism

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