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A DC point calculation and frequency band extension method suitable for vector-network time-domain functions

An extension method and DC point technology, which are applied in the field of DC point calculation and frequency band expansion suitable for vector network time domain functions, can solve the problems of time domain response accuracy influence, noise influence, etc., so as to reduce test costs and improve accuracy , the effect of improving the test accuracy

Active Publication Date: 2022-01-18
CHINA ELECTRONIS TECH INSTR CO LTD
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AI Technical Summary

Problems solved by technology

[0008] The DC point is obtained by interpolation, which is easily affected by the noise of the original data, and the time-domain response accuracy of the vector-network time-domain function will also be affected.

Method used

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  • A DC point calculation and frequency band extension method suitable for vector-network time-domain functions
  • A DC point calculation and frequency band extension method suitable for vector-network time-domain functions
  • A DC point calculation and frequency band extension method suitable for vector-network time-domain functions

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Embodiment Construction

[0033] Below in conjunction with accompanying drawing and specific embodiment the present invention is described in further detail:

[0034] like figure 1 and figure 2 As shown, a DC point calculation and frequency band extension method suitable for vector-network time-domain functions includes the following steps:

[0035] Step 1: Obtain the S-parameters of the discrete frequency points of the DUT through a vector network analyzer, and the specific form is shown in formula (1):

[0036]

[0037] in, Represents a vector composed of discrete frequency points, f 1 , f 2 … f N Represents discrete frequency points, N represents the number of S parameters of discrete frequency points, Represents a vector composed of S parameters corresponding to different discrete frequency points, s 1 ,s 2 ,...s N Represents the S parameter values ​​of different discrete frequency points;

[0038] Step 2: Use the vector matching algorithm to fit the S parameters, and obtain the ana...

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Abstract

The invention discloses a method for obtaining a DC point and extending a frequency band, which is suitable for vector-network time-domain functions, and belongs to the field of electronic measurement. The present invention uses vector fitting technology to obtain a group of DC points, and uses interpolation to process the original frequency domain test data to obtain another group of DC points, and performs weighted average of these two DC points to obtain the final DC point; point accuracy, and then improve the test accuracy of the time-domain function; the present invention proposes a frequency band extension method suitable for the vector-network time-domain function, which can effectively improve the time-domain resolution of the time-domain function without purchasing a wider frequency band The vector network reduces the test cost; the invention proposes a frequency resampling and time-domain characteristic calculation technology of network parameters, which can obtain the time-domain response of the measured object for any length of time.

Description

technical field [0001] The invention belongs to the technical field, and in particular relates to a method for calculating a DC point and extending a frequency band, which is suitable for vector-network time-domain functions. Background technique [0002] Traditionally, the vector network analyzer (hereinafter referred to as "YAN") is a frequency domain test instrument, which obtains the frequency domain network parameter characteristics of the measured object, and the time domain function is an extended function of YAN, which mainly It uses the mathematical relationship between the frequency domain and the time domain, transforms the frequency domain test data into the time domain through mathematical transformation, and then analyzes the time domain characteristics of the measured object. At present, the time domain function of Yawang does not have the function of frequency band expansion and test frequency point resampling. At the same time, the DC test point is simply ob...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01R23/16G01R27/28G06F17/16G06F17/14G06F17/18
CPCG01R23/16G01R27/28G06F17/16G06F17/14G06F17/18
Inventor 袁国平刘丹年夫顺杨明飞庄志远李明太
Owner CHINA ELECTRONIS TECH INSTR CO LTD