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Radio Frequency Power Relative Stability Test Circuit and Method for Quantum Precision Magnetic Detection

A technology of stability testing and radio frequency power, which is applied in the direction of electric power measurement, measurement of electric variables, measurement devices, etc. by using electromagnetic effect devices

Active Publication Date: 2021-08-06
THE 41ST INST OF CHINA ELECTRONICS TECH GRP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In order to solve the deficiencies in the prior art, the present disclosure provides a radio frequency power relative stability test circuit and method for quantum precision magnetic detection, which solves the problem that the final performance of the laser-pumped helium atom magnetometer used for quantum precision magnetic detection has strong differences. The test problem of the relative stability of the radio frequency power of the correlation, that is, the test problem of the random continuous change trend of the radio frequency power within a specific sampling time, realizes the effective measurement of the relative stability index of the radio frequency power better than 0.1% or even higher Characterization and evaluation, and meet the practical needs of technical applications

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  • Radio Frequency Power Relative Stability Test Circuit and Method for Quantum Precision Magnetic Detection

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Embodiment 1

[0032] Such as figure 1 As shown, Embodiment 1 of the present disclosure provides a radio frequency power relative stability test circuit for quantum precision magnetic detection, including a radio frequency excitation unit to be tested, a directional coupler, a dual-channel microwave power meter, a first thermocouple power probe and a terminal Controller, the terminal controller is preferably a main control computer equipped with measurement and control and data processing software; the main control computer is the control and analysis processing center of the entire test circuit, under the control of its coordination, the radio frequency to be tested The excitation unit sends out the RF signal to be tested and sends it to the directional coupler. The directional coupler divides the RF signal to be measured into two paths, one path is applied to the load through the attenuator to achieve good matching and absorption of the signal, and the other path passes through the first th...

Embodiment 2

[0039] Such as figure 2 As shown, in order to solve the relative stability of radio frequency power that has a strong correlation with the final performance of the laser-pumped helium atom magnetometer used for quantum precision magnetic detection, that is, the test problem of the random continuous change trend of radio frequency power within a specific sampling time, Embodiment 2 of the present disclosure provides a method for testing the relative stability of radio frequency power of quantum precision magnetic detection, the steps are as follows:

[0040] Collect the power measurement value of the RF signal to be tested in real time, and use the Allan variance to characterize the relative stability of the output power in the time domain; where the relative stability of the output power is the random fluctuation degree of the average value of the output power that characterizes a certain sampling time;

[0041] Since the relative stability index of the RF power to be tested ...

Embodiment 3

[0050] Embodiment 3 of the present disclosure provides a radio frequency signal generating device, the signal generating device is integrated and applied in a laser-pumped helium atom magnetometer, and the signal generating device includes the relative stability of radio frequency power described in Embodiment 1 of the present disclosure Test the circuit.

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Abstract

The disclosure provides a radio frequency power relative stability test circuit and method for quantum precision magnetic detection, which collects the power measurement value of the radio frequency signal to be tested in real time, and uses Allan variance to characterize the relative stability of the output power in the time domain; The temperature and humidity signals of the environment where the RF excitation unit is located and the test data of the calibration source are quantified and evaluated due to the stability of the test equipment itself and the unstable factors affected by the environment; Signal test data is removed from the characterization results obtained to obtain more effective test evaluation results; it solves the test problem of random continuous change trend of RF power within a specific sampling time, and realizes the accuracy of better than 0.1% or even higher The effective characterization and evaluation of the relative stability index of radio frequency power meets the actual needs of technical applications.

Description

technical field [0001] The present disclosure relates to the technical field of microwave testing, in particular to a radio frequency power relative stability test circuit and method for quantum precision magnetic detection, and a radio frequency signal generating device. Background technique [0002] The statements in this section merely provide background information related to the present disclosure and may not necessarily constitute prior art. [0003] With the rapid development of a new generation of information technology and equipment applications, laser-pumped helium atom magnetometers for quantum precision magnetic detection have continuously improved the requirements for effective evaluation of the core technical index of the relative stability of the radio frequency power of the internal core radio frequency excitation unit. . The relative stability of radio frequency power is a key technical index characteristic that characterizes the signal transmission charact...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01R21/08G01R35/00
CPCG01R21/08G01R35/007
Inventor 郭敏吴家亮周玉勇丁志钊
Owner THE 41ST INST OF CHINA ELECTRONICS TECH GRP