Terahertz antenna robot near field three-in-one test system

Abstract

The invention discloses a terahertz antenna robot near field three-in-one test system. The terahertz antenna robot near field three-in-one test system comprises a vector network analysis instrument, aterahertz vector network extension module, a terahertz standard antenna, a terahertz to-be-tested antenna, a robot, a test platform, test software and a main control computer; after the vector network instrument sends out a millimeter wave signal, the frequency doubling is amplified to a terahertz frequency band through the terahertz vector network extension module, and the terahertz signal passes through the terahertz to-be-tested antenna and is converted into electromagnetic wave with free space; after the electromagnetic wave is propagated by a certain distance, the electromagnetic wave isreceived by the terahertz standard antenna controlled by a six-axis robot mechanical arm and then is reduced into a current signal; the current signal passes through a low-loss cable and returns to the vector network analysis instrument; parameters are calculated by the vector network analysis instrument and are stored in the main control computer; and hereafter, the main control computer controls the six-axis robot mechanical arm to rotate to the next position, and the above action is repeated.

Description

Technical field [0001] The invention relates to the fields of industrial detection, scientific experiment, test measurement and the like, and specifically relates to a near-field three-in-one test system for a terahertz antenna robot. Background technique [0002] Communication, radar, navigation, remote sensing, broadcasting, television and other radio technology equipment all transmit information through radio waves, and they all require radio wave radiation and reception. In radio technology equipment, the device used to radiate and receive electromagnetic waves is called an antenna. The antenna is an indispensable and important part of the radio information transmission system. The vector network analyzer and the vector network expansion module can be used to test the core parameters of the microwave to the terahertz antenna, so as to obtain the main performance parameters of the antenna. [0003] In the antenna pattern test, the standard antenna rotates around the antenna und...

AI Technical Summary

Problems solved by technology

[0004] The movement trajectory and test accuracy of the standard antenna are determined by the antenna turntable. The inherent shortcomings of the mechanical turntable have brought many challenges to the entire antenna near-field system: 1. The movement of the standard antenna in the near-field test of the terahertz band antenna needs more High precision (positioning accuracy <50um)

It is difficult for traditional mechanical turntables to meet this requirement, so it is impossible to test terahertz frequency band antennas; 2. Due to physical limitations, traditional mechanical turntables require separation and independent three tests of planar near-field, spherical near-field and cylindrical near-field The system occupies a large area, high cost, and complicated to use; 3. Traditional mechanical turntables are limited by physical characteristics and cannot simulate scenarios such as fast antenna movement and beamforming beam scanning and tracking in 5G communications

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