Terahertz Active Phased Array Antenna

Abstract

A terahertz active phased array antenna disclosed by the present invention aims to provide a terahertz active phased array antenna capable of correcting dynamic errors in real time. The present invention is realized through the following technical solutions: a wafer-level hybrid circuit connected in sequence by a terahertz antenna array, an active feed network connected to an artificial neural network connected to a wave controller and an artificial intelligence library, and at the same time connected to an artificial neural network through N times The transmitter source of the frequency converter, and the mixer connected to the receiving user terminal and the local oscillator source connected through the M frequency multiplier; the active feed network obtains the transmission signal of the terahertz frequency band, and distributes it through the wafer-level hybrid circuit Perform beamforming and beam scanning for the terahertz array antenna, the active feed network sends the terahertz received signal to the mixer, and at the same time, the local oscillator signal obtained by the local oscillator source through the M frequency multiplier enters the mixer and terahertz The difference frequency mixing is performed on the received signal, and the difference frequency signal obtained with frequency variation is sent to the user receiving terminal to complete spectrum ellipsometric measurement and imaging.

Description

technical field [0001] The invention relates to a terahertz active phased array antenna in the field of electronic technology. Background technique [0002] The terahertz (THz) frequency band is defined as the electromagnetic wave band with a frequency of 0.1THz to 10THz and a wavelength of 0.03mm to 3mm, between microwave and millimeter wave and far infrared, and in the transitional frequency band from electronics to photonics. The characteristics of terahertz are mainly analyzed by electronic methods, while the optical characteristics of terahertz are mainly analyzed by photonic methods. Terahertz radiation has coherence due to its coherence mechanism, and its coherence detection can directly measure the amplitude and phase of the electric field, so the absorption coefficient and refractive index of the sample can be accurately extracted, which improves the accuracy of the measurement. Accuracy. The energy of terahertz radiation is only one tenth of the energy of X-ray p...

AI Technical Summary

Problems solved by technology

Therefore, for terahertz active phased array antennas, how to correct the amplitude / phase errors generated by hardware circuit design and manufacturing, so as to achieve the best performance of terahertz active phased array antennas, has not yet been determined. Program

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