Signal analyzer with high-precision calibration function and high-precision calibration method thereof

A technology for signal analyzers and calibration signals, applied in spectrum analysis, instruments, measuring devices, etc., can solve the problem that signal analyzers or spectrum analyzers cannot achieve fast and high-precision calibration

Active Publication Date: 2022-05-13
ZHONGXING LIANHUA TECH BEIJING CO LTD
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Problems solved by technology

[0005] The invention provides a signal analyzer with high-precision calibration function and its high-precision calibration method, which is used to solve the defect that the signal analyzer or spectrum analyzer in the prior art cannot realize fast and high-precision calibration

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  • Signal analyzer with high-precision calibration function and high-precision calibration method thereof
  • Signal analyzer with high-precision calibration function and high-precision calibration method thereof
  • Signal analyzer with high-precision calibration function and high-precision calibration method thereof

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Embodiment Construction

[0068] In order to make the purpose, technical solutions and advantages of the present invention clearer, the technical solutions in the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the present invention. Obviously, the described embodiments are part of the embodiments of the present invention , but not all examples. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

[0069] In the description of the embodiments of the present invention, the terms "first", "second", and "third" are used for description purposes only, and should not be understood as indicating or implying relative importance.

[0070] In the description of the embodiments of the present invention, it should be noted that unless otherwise specified and limited, the terms "connected" and "con...

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Abstract

The invention provides a signal analyzer with a high-precision calibration function and a high-precision calibration method thereof, and the signal analyzer comprises a calibration module which employs a digital scheme and is used for outputting a broadband calibration signal, and the broadband calibration signal is a signal with a uniform frequency interval and a target phase; the radio frequency front end is connected with the calibration module and is used for performing amplification, attenuation, filtering and initial frequency conversion on the broadband calibration signal and outputting a target signal; the intermediate frequency module is connected with the radio frequency front end and is used for performing frequency conversion processing on the target signal for multiple times and outputting a target digital signal of a target frequency; and the digital processing module is connected with the intermediate frequency module, the digital processing module is used for carrying out digital down-conversion processing and fast Fourier transform processing on the target digital signal to obtain a target frequency domain signal, and the target frequency domain signal is used for determining a frequency response curve of the signal analyzer. The signal analyzer can realize high-precision calibration.

Description

technical field [0001] The invention relates to the technical field of signal processing equipment, in particular to a signal analyzer with a high-precision calibration function and a high-precision calibration method thereof. Background technique [0002] With the advancement of science and technology, communication methods and communication systems are becoming more and more complex. Spectrum analyzers, signal analyzers or vector signal analyzers with digital sampling architecture are important equipment for measuring phase information in communication systems. [0003] In order to eliminate the drift error caused by the device characteristics of the RF front-end in the signal analyzer or spectrum analyzer, a calibration source that outputs a reference signal of known amplitude and frequency is usually used to assist the signal analyzer or spectrum analyzer system to estimate the measurement error. [0004] At present, the calibration source usually uses phase-locked loop ...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01R31/00G01R23/165G01R35/00
CPCG01R31/00G01R23/165G01R35/005
Inventor 曹昊嘉杨胜领程军强
Owner ZHONGXING LIANHUA TECH BEIJING CO LTD
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