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

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: 2022-07-01
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
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  • Signal analyzer with high-precision calibration function and high-precision calibration method

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Embodiment Construction

[0068] In order to make the objectives, technical solutions and advantages of the present invention clearer, the technical solutions in the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the present invention. , not all examples. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall 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 only used for the purpose of description, and cannot 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 expressly specified and limited, the terms "connected" and "connected" sho...

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Abstract

The invention provides a signal analyzer with high-precision calibration function and a high-precision calibration method thereof. The signal analyzer comprises: a calibration module, the calibration module adopts a digital scheme and is used for outputting a wideband calibration signal, and the wideband calibration signal has a uniform frequency interval And the phase is the signal of the target phase; the RF front-end, the RF front-end is connected to the calibration module, the RF front-end is used to amplify, attenuate, filter and initially convert the broadband calibration signal, and output the target signal; the IF module, the IF module is connected to the RF front-end, and the IF module It is used to perform multiple frequency conversion processing on the target signal and output the target digital signal of the target frequency; the digital processing module, the digital processing module is connected to the intermediate frequency module, and the digital processing module is used to perform digital down-conversion processing and fast Fourier transform processing on the target digital signal. The target frequency domain signal is obtained, and the target frequency domain signal is used to determine the frequency response curve of the signal analyzer. The signal analyzer can achieve 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 with 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 the phase-locked...

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Application Information

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Patent Type & Authority Patents(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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