A system and method for photon assisted microwave signal time-frequency-amplitude-phase measurement

The photon-assisted microwave signal time-frequency-amplitude-phase measurement system utilizes time convolution and polarization multiplexing techniques to achieve simultaneous measurement of the frequency, amplitude, and phase information of microwave signals. This solves the problem that existing technologies cannot simultaneously measure multiple signals and is suitable for real-time measurement in complex electromagnetic environments.

CN120880553BActive Publication Date: 2025-12-16HANGZHOU DIANZI UNIV +1
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Patent Information

Application Number
CN202511368725.0
Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Filing Date
2025-09-24
Publication Date
2025-12-16
Estimated Expiration
2045-09-24

AI Technical Summary

Technical Problem

Existing real-time Fourier transform methods cannot simultaneously measure the frequency, amplitude, and phase information of microwave signals, and their application is limited in complex electromagnetic environments, making it impossible to detect multiple signals simultaneously.

Method used

A photon-assisted microwave signal time-frequency-amplitude-phase measurement system is adopted, which utilizes components such as a pulsed light source, input and output dispersive media, electro-optic modulation module, polarization controller and photodetector to simultaneously measure the frequency, amplitude and phase information of microwave signals through time convolution and polarization multiplexing techniques.

Benefits of technology

It enables simultaneous measurement of time, frequency, amplitude, and phase information of microwave signals, is applicable to multiple microwave signal scenarios, can measure the time, frequency, amplitude, and phase information of microwave signals in real time without gaps, has a fast processing speed, and is suitable for complex electromagnetic environments.

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Abstract

The application discloses a kind of photonic auxiliary microwave signal time-frequency amplitude phase measurement system and method, pulse light source output light pulse in the system enters input end dispersion medium and completes pulse broadening, then enters electro-optic modulation module, simultaneously power divider receives microwave signal and it is divided two-way input electro-optic modulation module in upper and lower sub-modulator to modulate light pulse;The modulated light signal output by the electro-optic modulation module passes through output end dispersion medium, completes time convolution process, after this, output light signal will pass through optical coupling module and be divided into two paths, in turn pass through polarization controller, polarization beam splitter, photodetector, analog-digital converter, digital signal processor, the position information and amplitude information of electric pulse are collected, and the time, amplitude, frequency and phase information of microwave signal are obtained.The application can simultaneously measure the time, frequency, amplitude, phase information of microwave signal, and does not need complex post-processing, and processing speed is fast.
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