CN107247696A - A kind of method that S2P file acquisition loss balancing data are called in Noise Factor Analyzer - Google Patents
A kind of method that S2P file acquisition loss balancing data are called in Noise Factor Analyzer Download PDFInfo
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- CN107247696A CN107247696A CN201710450209.1A CN201710450209A CN107247696A CN 107247696 A CN107247696 A CN 107247696A CN 201710450209 A CN201710450209 A CN 201710450209A CN 107247696 A CN107247696 A CN 107247696A
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Abstract
The present invention proposes a kind of method that S2P file acquisition loss balancing data are called in Noise Factor Analyzer, comprises the following steps：Step one, S2P file of the loading from Network Analyzer, parses S2P formatted file data；Step 2, extracts the actual parameter in S2P data, calculates the loss balancing value suitable for Noise Factor Analyzer；Step 3, sets up new frequency loss value list, for correcting the system loss in noise-factor measurement；Step 4, preserves LOS form loss balancing files, generation and S2P files LOS formatted files of the same name, or user saves as LOS files from name.The present invention is easy to operate, and whole algorithm can be embedded into Noise Factor Analyzer host software, be automatically performed by the key operation of menu one, can also be realized outside instrument using program control mode；A kind of new quick, effective import pathway is provided for the foundation of loss balancing table in noise-factor measurement.
Description
Technical field
The present invention relates to technical field of measurement and test, more particularly to one kind calls S2P file acquisitions in Noise Factor Analyzer
The method of loss balancing data.
Background technology
The fast development of modern electronic technology and application so that people handle receiver, detect small-signal ability
Demand increasingly strengthens.And in the ability parameter of the system of sign processing low level signal, noise coefficient is both suitable characterizes entirely
Receiver system is adapted to the unique parameters for characterizing the building block such as amplifier, frequency mixer and transistor again, in radar, communication, low
The field applications such as noise Rx system, microwave manufacture are widely.Quick, the accurate measurement of noise coefficient can not only shorten new
The checking lead time of design, it can also greatly improve production detection and the measurement efficiency of product.
Noise-factor measurement based on Y factor method includes calibrating and two processes of measurement, when measurement process is different from
When the connection adapter of calibration process or additional connection cable, then loss balancing function is needed to use to be used for modifying factor building-out cable
Or adapter connection/removal and the system loss that causes, be that noise coefficient is accurately surveyed so as to ensure the accuracy of noise testing
One of key technology of amount.The noise coefficient of high-gain equipment is for example measured, needs to add attenuator in measurement process；Have
Situations such as amplifier requirements of waveguide input are equipped with waveguide to coaxial adapter, is required for service wear compensation technique to be lost
Amendment.
At present, the noise-factor measurement based on Y factor method, the loading of loss balancing data generally has following three kinds of realization sides
Formula：
(1) only input a single fixed loss value and be used in whole measurement frequency range；
(2) by editing loss balancing table, frequency-loss value number of current measurement frequency range internal loss part is inputted one by one manually
According to；
(3) the LOS form loss balancing files preserved by loading in Noise Factor Analyzer machine realize frequency-loss
The input of value.
In the above-mentioned existing noise-factor measurement based on Y factor method in three kinds of load modes of loss balancing data：
Only input a single fixed loss value and be applied to whole measurement frequency range, due to the characteristic of wearing detail, many situations
Under tend not to the loss characteristic of complete characterization scanning band internal loss part；
By editing loss balancing table, the frequency of input loss part-loss characterization value one by one is needed manually, although can characterize
The loss characteristic of different measurement frequencies, but manual input operation is cumbersome and time-consuming, and easily there is artificial input error；
Although LOS loss files can be loaded directly into calling, file format is that Noise Factor Analyzer is peculiar, it is impossible to
Other instruments are mutually used, and change a new wearing detail every time, it is necessary to re-started editor's input and then preserved could supply again
Call next time and use, inconvenient operation adds the complexity that user's measurement cost and user use.
And when the connector for needing to compensate is non-standard component, the S ginsengs of dual-port are generally first carried out using Network Analyzer
Number measurement, measurement result is preserved with S2P file formats, S2P files and S11, S21, S12 and S22 network parameter therein, no
Can directly it be used by existing acoustic meter.
The content of the invention
To solve the above-mentioned existing deficiency for obtaining loss balancing data technique, the present invention proposes one kind in noise coefficient
The method that S2P file acquisition loss balancing data are called in analyzer.
The technical proposal of the invention is realized in this way：
A kind of method that S2P file acquisition loss balancing data are called in Noise Factor Analyzer, comprises the following steps：
Step one, S2P file of the loading from Network Analyzer, parses S2P formatted file data；
Step 2, extracts the actual parameter in S2P data, calculates the loss balancing suitable for Noise Factor Analyzer
Value；
Step 3, sets up new frequency-loss value list, for correcting the system loss in noise-factor measurement；
Step 4, preserves LOS form loss balancing files, generation and S2P files LOS formatted files of the same name, Huo Zheyong
Family saves as LOS files from name.
Alternatively, the S2P files cover 3 kinds of file formats, including log-magnitude/angle, linear amplitude/angle and
Real part/imaginary part.
Alternatively, the data in # information row attribute, determination frequency-data row are indicated in the S2P files by reading
Type, data format and storage put in order, so as to parse each S parameter in file.
Alternatively, the S2P files are shown with standard ASCII Touchstone S2P forms, describe dual-port
The Linear Network parameter of part and frequency dependence, including frequency values, S11, S21, S12, S22 network parameter and the additional letter of test
Breath.
Alternatively, in the step 2, according to the information alert in S2P files, S2P file data form classes are judged
Type；
If log-magnitude/angle form, then the corresponding S21 range parameters M of frequency is directly extracted as in acoustic meter
The loss value L used；
If linear amplitude/angle form, then the corresponding S21 linear amplitudes parameter M of frequency is extractedlin, by calculating
20*log10(Mlin) obtain the loss value L that is used in acoustic meter；
If real part/imaginary part form, then the real part R and imaginary part I of the corresponding S21 parameters of frequency are extracted, by calculating 10*
log10(R2+I2) obtain the loss value L that is used in acoustic meter.
Alternatively, in the step 3, each test frequency and corresponding frequencies point of wearing detail in record S2P files
On changed by step 2 after obtained loss value L, set up the loss balancing table suitable for acoustic meter, directly act on current
Measuring state simultaneously edits display in loss balancing form.
Alternatively, link position of the loss balancing table according to wearing detail in a test system, is selected as before measured piece
Or after measured piece.
Alternatively, it is between noise source and measured piece before the measured piece.
Alternatively, between measured piece and acoustic meter input after the measured piece.
The beneficial effects of the invention are as follows：
(1) S2P file acquisition loss balancing data are directly invoked in Noise Factor Analyzer, are covered existing at present
3 kinds of S2P file formats, are automatically performed Data Format Transform and show, while simplifying user's manual input operation, can keep away again
Exempt from because be manually entered mistake and caused by artificial measurement error, especially when frequency-loss Value Data of wearing detail is more, save
Measure setup time, simple and direct practicality；
(2) S2P formatted files are convertible saves as LOS forms, improves use of the loss balancing data in other instruments
Compatibility, meets a variety of use requirements of user.
Brief description of the drawings
In order to illustrate more clearly about the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing
There is the accompanying drawing used required in technology description to be briefly described, it should be apparent that, drawings in the following description are only this
Some embodiments of invention, for those of ordinary skill in the art, on the premise of not paying creative work, can be with
Other accompanying drawings are obtained according to these accompanying drawings.
Fig. 1 is a kind of method that S2P file acquisition loss balancing data are called in Noise Factor Analyzer of the invention
Flow chart.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete
Site preparation is described, it is clear that described embodiment is only a part of embodiment of the invention, rather than whole embodiments.It is based on
Embodiment in the present invention, it is every other that those of ordinary skill in the art are obtained under the premise of creative work is not made
Embodiment, belongs to the scope of protection of the invention.
For shortcoming present in prior art, the present invention proposes one kind and S2P texts is called in Noise Factor Analyzer
Part obtain loss balancing data method, for loss balancing value in Noise Factor Analyzer foundations provide it is a kind of newly it is straight
Connect, effective import pathway.The present invention is easy to operate, and being automatically performed data by a key operation extracts and be converted into noise coefficient
The special frequency of analyzer-loss value form, improves the ease for use of loss balancing function in noise coefficient test, greatly shortens
Test setup time, while reduce because be manually entered middle human error and caused by measurement error.
The method of the present invention is described in detail with reference to Figure of description.
As shown in figure 1, a kind of S2P file acquisition loss balancing data called in Noise Factor Analyzer of the present invention
Method, comprises the following steps：
Step one, S2P file of the loading from Network Analyzer, parses S2P formatted file data.
During usual S2P files are the S parameter normative document using the wearing detail measured by Network Analyzer, the present invention
S2P files cover current existing 3 kinds of forms.
Step 2, extracts the actual parameter in S2P data, calculates the loss balancing suitable for Noise Factor Analyzer
Value.
Step 3, sets up new frequency-loss value list, for correcting the system loss in noise-factor measurement.
Step 4, preserves LOS form loss balancing files, automatically generates the LOS formatted file of the same name with S2P files, or
Person user saves as LOS files from name.
Above-mentioned steps one, usual S2P files come from the measurement output of Network Analyzer, are measured by Network Analyzer
The S parameter normative document of wearing detail.S2P files described in the present invention are with standard ASCII Touchstone S2P forms
Display, describe the Linear Network parameter of two port components and frequency dependence, including frequency values, S11, S21, S12, S22 net
Network parameter and some test additional informations.The S2P files that can be called in the present invention cover current existing 3 kinds of forms：Logarithm
Amplitude/angle, linear amplitude/angle and real part/imaginary part file format, the suffix of these three files is all .S2P, by reading
Data type, data format and storage in the information row attribute for indicating # in file, determination frequency-data row put in order,
So as to parse each S parameter in file.
Wherein, " dB in #Hz S dB R 50 " represents that S parameter storage is log-magnitude/angle form to # mark information row；#
" MA in #Hz S MA R 50 " represents that S parameter storage is linear amplitude/angle form to mark information row；# mark information rows " #Hz S
RI in RI R 50 " represents that S parameter storage is real part/need portion's form.
In above-mentioned steps two, according to the information alert in S2P files, S2P file data Format Types are judged；If right
Number amplitude/angle form, then directly extract the corresponding S21 range parameters M of frequency and be used as the loss value L used in acoustic meter；Such as
Fruit is linear amplitude/angle form, then extracts the corresponding S21 linear amplitudes parameter M of frequencylin, by calculating 20*log10(Mlin)
Obtain the loss value L used in acoustic meter；If real part/imaginary part form, then the real part R of the corresponding S21 parameters of frequency is extracted
With imaginary part I, by calculating 10*log10(R2+I2) obtain the loss value L that is used in acoustic meter.
In above-mentioned steps three, passing through in each test frequency and corresponding frequencies point of wearing detail in record S2P files
The loss value L obtained after step 2 conversion, sets up the loss balancing table suitable for acoustic meter, directly acts on current measuring state
And display can be edited in loss balancing form.This loss balancing table can according to the link position of wearing detail in a test system,
Select as before measured piece (between noise source and measured piece) or after measured piece (between measured piece and acoustic meter input).
In above-mentioned steps four, the present invention automatically generates the LOS formatted file of the same name with S2P files, or user saves as
From the LOS files of name, facilitate the transplanting of loss balancing table to load, meet use of the user under different measuring environments.
The present invention is easy to operate, and whole algorithm can be embedded into Noise Factor Analyzer host software, pass through menu one
Key operation is automatically performed, and can also be realized outside instrument using program control mode, practicality, portable good；For noise system
The foundation of loss balancing table provides a kind of new quick, effective import pathway in number measurement.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all essences in the present invention
God is with principle, and any modification, equivalent substitution and improvements made etc. should be included in the scope of the protection.
Claims (7)
1. a kind of method that S2P file acquisition loss balancing data are called in Noise Factor Analyzer, it is characterised in that including
Following steps：
Step one, S2P file of the loading from Network Analyzer, parses S2P formatted file data；
Step 2, extracts the actual parameter in S2P data, calculates the loss balancing value suitable for Noise Factor Analyzer；
Step 3, sets up new frequency-loss value list, for correcting the system loss in noise-factor measurement；
Step 4, preserves LOS form loss balancing files, generation and S2P files LOS formatted files of the same name, or user is certainly
Name saves as LOS files.
2. a kind of side for calling S2P file acquisition loss balancing data in Noise Factor Analyzer as claimed in claim 1
Method, it is characterised in that the S2P files cover 3 kinds of file formats, including log-magnitude/angle, linear amplitude/angle and
Real part/imaginary part.
3. a kind of side for calling S2P file acquisition loss balancing data in Noise Factor Analyzer as claimed in claim 1
Method, it is characterised in that indicate the data in # information row attribute, determination frequency-data row in the S2P files by reading
Type, data format and storage put in order, so as to parse each S parameter in file.
4. a kind of side for calling S2P file acquisition loss balancing data in Noise Factor Analyzer as claimed in claim 1
Method, it is characterised in that the S2P files are shown with standard ASCII Touchstone S2P forms, describe dual-port
The Linear Network parameter of part and frequency dependence, including frequency values, S11, S21, S12, S22 network parameter and the additional letter of test
Breath.
5. a kind of side for calling S2P file acquisition loss balancing data in Noise Factor Analyzer as claimed in claim 1
Method, it is characterised in that in the step 2, according to the information alert in S2P files, judges S2P file data Format Types；
If log-magnitude/angle form, then the corresponding S21 range parameters M of frequency is directly extracted as being used in acoustic meter
Loss value L；
If linear amplitude/angle form, then the corresponding S21 linear amplitudes parameter M of frequency is extractedlin, by calculating 20*
log10(Mlin) obtain the loss value L that is used in acoustic meter；
If real part/imaginary part form, then the real part R and imaginary part I of the corresponding S21 parameters of frequency are extracted, by calculating 10*log10
(R2+I2) obtain the loss value L that is used in acoustic meter.
6. a kind of side for calling S2P file acquisition loss balancing data in Noise Factor Analyzer as claimed in claim 1
The each test frequency and corresponding frequencies point of wearing detail in method, it is characterised in that in the step 3, record S2P files
On changed by step 2 after obtained loss value L, set up the loss balancing table suitable for acoustic meter, directly act on current
Measuring state simultaneously edits display in loss balancing form.
7. a kind of side for calling S2P file acquisition loss balancing data in Noise Factor Analyzer as claimed in claim 6
Method, it is characterised in that link position of the loss balancing table according to wearing detail in a test system, select as before measured piece or
After measured piece.
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Cited By (3)
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| CN111381121A (en) * | 2018-12-29 | 2020-07-07 | 深圳市大富科技股份有限公司 | Auxiliary analysis method and device for filter test result |
| CN111966593A (en) * | 2020-08-12 | 2020-11-20 | 南京宏泰半导体科技有限公司 | Method for realizing prenatal automatic compensation of chip test quantity |
| CN112067914A (en) * | 2020-08-04 | 2020-12-11 | 中电科仪器仪表有限公司 | Method for correcting error introduced by extra network in noise coefficient measurement |
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| CN111381121A (en) * | 2018-12-29 | 2020-07-07 | 深圳市大富科技股份有限公司 | Auxiliary analysis method and device for filter test result |
| CN112067914A (en) * | 2020-08-04 | 2020-12-11 | 中电科仪器仪表有限公司 | Method for correcting error introduced by extra network in noise coefficient measurement |
| CN111966593A (en) * | 2020-08-12 | 2020-11-20 | 南京宏泰半导体科技有限公司 | Method for realizing prenatal automatic compensation of chip test quantity |
| CN111966593B (en) * | 2020-08-12 | 2021-12-17 | 南京宏泰半导体科技有限公司 | Method for realizing prenatal automatic compensation of chip test quantity |
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