CN107144806A - A kind of lattice gauge receiver calibration method for introducing matching amendment - Google Patents
A kind of lattice gauge receiver calibration method for introducing matching amendment Download PDFInfo
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- CN107144806A CN107144806A CN201710477873.5A CN201710477873A CN107144806A CN 107144806 A CN107144806 A CN 107144806A CN 201710477873 A CN201710477873 A CN 201710477873A CN 107144806 A CN107144806 A CN 107144806A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R35/00—Testing or calibrating of apparatus covered by the other groups of this subclass
- G01R35/005—Calibrating; Standards or reference devices, e.g. voltage or resistance standards, "golden" references
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Abstract
The present invention proposes a kind of lattice gauge receiver calibration method for introducing matching amendment, comprises the following steps：The first step：Reset vector Network Analyzer；Second step：Dual-port calibration is carried out, 10 error coefficients are obtained；3rd step：I, j are respectively connected to power meter for port；4th step：Record the corresponding reference receiver of port i, i and the power meter number of degrees；5th step：Calculate source power error coefficient；6th step：Measured piece is connected, and obtains the S parameter of measured piece；7th step：The measured value of corrected received machine；8th step：Complete amendment.The calibration method of the present invention eliminates the error that mismatch between source and receiver is produced, and eliminates the error that the adapter (short-circuiting device/cable) of connection source and receiver is caused, improves the precision of calibration.
Description
Technical field
The present invention relates to technical field of measurement and test, more particularly to a kind of lattice gauge receiver calibration side for introducing matching amendment
Method.
Background technology
As shown in figure 1, vector network analyzer (abbreviation lattice gauge) carries out S parameter test, it is internal comprising radiofrequency signal
Source (RF Source1 and RF Source2), reference receiver (a1, a2), measuring receiver (b1, b2), reference channel coupler
The parts such as (Ref Channel Couplers), TCH test channel coupler (Test Channel Couplers).Received
, it is necessary to be calibrated to power and receiver during machine signal measurement.
It is typically that power meter is first connected to instrument port when carrying out receiver calibration to vector network analyzer
On (port1, port2), the signal source power to lattice gauge is demarcated, and then receiver is carried out using the signal source of demarcation
Secondary demarcation.
Existing scheme is as follows：
First, the signal source power of lattice gauge is linearly corrected using power meter, correction model is as shown in Figure 2；
Then revised signal source port signal is introduced directly into measuring receiver port, typically port connection short circuit
Device or cable；
Subsequently, measuring receiver is linearly corrected, as shown in Figure 3.
The signal source and receiver of vector network analyzer are regarded as linear by existing scheme, be have ignored measurement and are received
The matching of generator terminal, causes calibration error.First, any mismatch between source and power probe or between source and receiver all can
Produce error；Secondly, if having used adapter (short-circuiting device/cable), its loss and mismatch at connection source and receiver
A part for receiver calibration error will be directly becoming.
The content of the invention
To solve above-mentioned the deficiencies in the prior art, the present invention proposes a kind of network instrument receiver school for introducing matching amendment
Quasi- method.
The technical proposal of the invention is realized in this way：
A kind of lattice gauge receiver calibration method for introducing matching amendment, comprises the following steps：
The first step：Reset vector Network Analyzer；
Second step：Dual-port calibration is carried out, 10 error coefficients, including directional error, source matching error, reflection is obtained
Tracking error, transmission tracking error, load matched error；
3rd step：I, j are respectively connected to power meter for port；
4th step：Record the corresponding reference receiver of port i, j and the power meter number of degrees；
5th step：Calculate source power error coefficient；
6th step：Measured piece is connected, and obtains the S parameter of measured piece；
7th step：The measured value of corrected received machine：
First, the measured value of port i, j reference receiver is corrected；
Then, amendment port i to i, the measured value of j to j measuring receiver；
Subsequently, amendment port i to j, the measured value of j to i measuring receiver.
8th step：Complete amendment.
Alternatively, in the second step, it is necessary to first decomposite reference receiver error and forward power transmission error, and will
10 error coefficients are introduced, and error relationship is as follows：
Wherein, EdpTo decompose rear port i directional error；ErpTo decompose rear port i skin tracking error；EtpFor
Decompose the error of rear port j measuring receivers；EdFor port i directional error；ErFor port i skin tracking error；EsFor
Port i source matching error；ElFor port i to j load matched error；EtFor port i to j transmission tracking error；EprFor
Error of the port i source power test set to reference receiver；EpsFor the mistake of port i source power test set to measured piece input
Difference；
Port j above-mentioned error relationship can similarly be obtained.
Alternatively, the 5th step source power error coefficient acquisition process, when access power timing：
Wherein, EpFor the error of port i reference receivers to measured piece input；EprArrived for port i source power test sets
The error of reference receiver；EpsFor the error of port i source power test set to measured piece input；aimReference for port i connects
Receipts machine receives signal；PmeasFor the measured value of power meter；
Port j power error coefficient acquisition process is identical with above-mentioned port i power error coefficient acquisition process.
Alternatively, receiver makeover process in the 7th step, first, carries out the amendment of port i reference receivers：
Wherein, aia_corFor the correction result of port i reference receivers；aimFor port i reference receiver measured value；Ep
For the error of port i reference receivers to measured piece input；EsFor port i source matching error；SiiFor connectivity port i quilt
Survey the correction value of part reflectance factor；
The makeover process of port j reference receiver is identical with the makeover process of above-mentioned port i reference receiver.
Alternatively, receiver makeover process in the 7th step, then, carries out the amendment of port i to i measuring receivers：
Wherein, bia_corFor the correction result of port i measuring receivers；aia_corFor the amendment knot of port i reference receivers
Really；aimFor port i reference receiver measured value；EpFor the error of port i reference receivers to measured piece input；EsFor end
Mouth i source matching error；SiiFor the correction value of connectivity port i measured piece reflectance factor；
The makeover process of port j to j measuring receivers is identical with the makeover process of above-mentioned port i to i measuring receivers.
Alternatively, receiver makeover process in the 7th step, subsequently, carries out repairing for port i to j measuring receivers
Just：
Wherein, bja_corFor the correction result of port j measuring receivers；bjmFor port j measuring receiver measured value；Etp
To decompose the error of rear port j measuring receivers；ElFor port i to j load matched error；SjjFor the tested of connectivity port j
The correction value of part reflectance factor；
The makeover process of port j to i measuring receivers is identical with the makeover process of above-mentioned port i to j measuring receivers.
The beneficial effects of the invention are as follows：
(1) error that mismatch is produced between source and receiver is eliminated；
(2) error that the adapter (short-circuiting device/cable) of connection source and receiver is caused is eliminated；
(3) precision of calibration is improved.
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 two-port network analyzer theory diagram；
Fig. 2 is existing power correction signal flow diagram；
Fig. 3 is existing receiver revise signal flow graph；
Fig. 4 is a kind of flow chart for the lattice gauge receiver calibration method for introducing matching amendment of the present invention；
Fig. 5 is receiver power measurement signal flow graph of the invention；
Fig. 6 obtains signal flow diagram for the source power error coefficient of the present invention.
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.
It is contemplated that when vector network analyzer carries out receiver calibration, no longer source power and receiver compensation are regarded as
Linear, but consider instrument internal and the matching problem of measured piece, signal source and receiver link model are refined, plus
Enter 10 error models of lattice gauge, in receiver calibration, the matching of measured piece is taken into account, the essence of calibration is improved
Degree.
As shown in figure 4, a kind of lattice gauge receiver calibration method of introducing matching amendment of the present invention, including following step
Suddenly：
The first step：Reset vector Network Analyzer；
Second step：Dual-port calibration is carried out, 10 error coefficients (directional error, source matching error, skin tracking is obtained
Error, transmission tracking error, load matched error)；
3rd step：Port i, j are respectively connected to power meter, and (port i, j are any two ends for needing to calibrate in lattice gauge
Mouthful)；
4th step：Record the corresponding reference receiver of port i, j and the power meter number of degrees；
5th step：Calculate source power error coefficient；
6th step：Measured piece is connected, and obtains the S parameter of measured piece；
7th step：The measured value of corrected received machine：
First, the measured value of port i, j reference receiver is corrected；
Then, amendment port i to i, the measured value of j to j measuring receiver；
Subsequently, amendment port i to j, the measured value of j to i measuring receiver.
8th step：Complete amendment.
So far, the vector network analyzer receiver calibration for introducing matching amendment is completed.
, it is necessary to first be refined the error model flow chart of lattice gauge in above-mentioned second step, reference receiver is decomposited
Error and forward power transmission error, and 10 error models are introduced, the receiver power measurement signal flow graph after improving is such as
Shown in Fig. 5.
Because being the signal flow diagram (Fig. 5) for introducing 10 errors, error relationship is as follows：
Wherein, EdpTo decompose rear port i directional error；ErpTo decompose rear port i skin tracking error；EtpFor
Decompose the error of rear port j measuring receivers；EdFor port i directional error；ErFor port i skin tracking error；EsFor
Port i source matching error；ElFor port i to j load matched error；EtFor port i to j transmission tracking error；EprFor
Error of the port i source power test set to reference receiver；EpsFor the mistake of port i source power test set to measured piece input
Difference.
Similarly, port j above-mentioned error relationship can be obtained.
Fig. 6 show source power error coefficient obtain signal flow diagram, above-mentioned 5th step source power error coefficient acquisition process,
When access power timing：
Wherein, EpFor the error of port i reference receivers to measured piece input；EprArrived for port i source power test sets
The error of reference receiver；EpsFor the error of port i source power test set to measured piece input；aimReference for port i connects
Receipts machine receives signal；PmeasFor the measured value of power meter.
Port j power error coefficient acquisition process is identical with above-mentioned port i power error coefficient acquisition process, similarly
It can obtain.
Receiver makeover process in above-mentioned 7th step, it is specific as follows：
First, the amendment of port i reference receivers is carried out：
Wherein, aia_corFor the correction result of port i reference receivers；aimFor port i reference receiver measured value；Ep
For the error of port i reference receivers to measured piece input；EsFor port i source matching error；SiiFor connectivity port i quilt
Survey the correction value of part reflectance factor.
The makeover process of port j reference receiver is identical with the makeover process of above-mentioned port i reference receiver, similarly
It can obtain.
Then, the amendment of port i to i measuring receivers is carried out：
Wherein, bia_corFor the correction result of port i measuring receivers；aia_corFor the amendment knot of port i reference receivers
Really；aimFor port i reference receiver measured value；EpFor the error of port i reference receivers to measured piece input；EsFor end
Mouth i source matching error；SiiFor the correction value of connectivity port i measured piece reflectance factor.
The makeover process of port j to j measuring receivers is identical with the makeover process of above-mentioned port i to i measuring receivers, together
Li Ke get.
Subsequently, the amendment of port i to j measuring receivers is carried out：
Wherein, bja_corFor the correction result of port j measuring receivers；bjmFor port j measuring receiver measured value；Etp
To decompose the error of rear port j measuring receivers；ElFor port i to j load matched error；SjjFor the tested of connectivity port j
The correction value of part reflectance factor.
The makeover process of port j to i measuring receivers is identical with the makeover process of above-mentioned port i to j measuring receivers, together
Li Ke get.
The calibration method of the present invention introduces 10 error models, considers receiver measured piece matching error when being modified
Enter, power error be divided into reference receiver part and positive hop, in the calibration of power, while using power meter and
The number of degrees of reference receiver are calculated, and are divided into the parameters revision of receiver port i reference receiver amendment, port i
Measuring receiver amendment and port i to j measuring receiver amendment, eliminate the error that mismatch is produced between source and receiver,
The error that the adapter (short-circuiting device/cable) of connection source and receiver is caused is eliminated, the precision of calibration is improved.
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 (6)
1. a kind of lattice gauge receiver calibration method for introducing matching amendment, it is characterised in that comprise the following steps：
The first step：Reset vector Network Analyzer；
Second step：Dual-port calibration is carried out, 10 error coefficients, including directional error, source matching error, skin tracking is obtained
Error, transmission tracking error, load matched error；
3rd step：I, j are respectively connected to power meter for port；
4th step：Record the corresponding reference receiver of port i, j and the power meter number of degrees；
5th step：Calculate source power error coefficient；
6th step：Measured piece is connected, and obtains the S parameter of measured piece；
7th step：The measured value of corrected received machine：
First, the measured value of port i, j reference receiver is corrected；
Then, amendment port i to i, the measured value of j to j measuring receiver；
Subsequently, amendment port i to j, the measured value of j to i measuring receiver；
8th step：Complete amendment.
2. a kind of lattice gauge receiver calibration method for introducing matching amendment as claimed in claim 1, it is characterised in that
, it is necessary to first decomposite reference receiver error and forward power transmission error in the second step, and by 10 error systems
Number is introduced, and error relationship is as follows：
Edp=EdEpr
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Wherein, EdpTo decompose rear port i directional error；ErpTo decompose rear port i skin tracking error；EtpTo decompose
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Port j above-mentioned error relationship can similarly be obtained.
3. a kind of lattice gauge receiver calibration method for introducing matching amendment as claimed in claim 1, it is characterised in that
The 5th step source power error coefficient acquisition process, when access power timing：
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Wherein, EpFor the error of port i reference receivers to measured piece input；EprFor port i source power test set to reference
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Receive signal；PmeasFor the measured value of power meter；
Port j power error coefficient acquisition process is identical with above-mentioned port i power error coefficient acquisition process.
4. a kind of lattice gauge receiver calibration method for introducing matching amendment as claimed in claim 1, it is characterised in that
Receiver makeover process in 7th step, first, carries out the amendment of port i reference receivers：
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Wherein, aia_corFor the correction result of port i reference receivers；aimFor port i reference receiver measured value；EpFor end
Error of the mouth i reference receivers to measured piece input；EsFor port i source matching error；SiiFor connectivity port i measured piece
The correction value of reflectance factor；
The makeover process of port j reference receiver is identical with the makeover process of above-mentioned port i reference receiver.
5. a kind of lattice gauge receiver calibration method for introducing matching amendment as claimed in claim 1, it is characterised in that
Receiver makeover process in 7th step, then, carries out the amendment of port i to i measuring receivers：
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Wherein, bia_corFor the correction result of port i measuring receivers；aia_corFor the correction result of port i reference receivers；aim
For port i reference receiver measured value；EpFor the error of port i reference receivers to measured piece input；EsFor port i's
Source matching error；SiiFor the correction value of connectivity port i measured piece reflectance factor；
The makeover process of port j to j measuring receivers is identical with the makeover process of above-mentioned port i to i measuring receivers.
6. a kind of lattice gauge receiver calibration method for introducing matching amendment as claimed in claim 1, it is characterised in that
Receiver makeover process in 7th step, subsequently, carries out the amendment of port i to j measuring receivers：
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Solve the error of rear port j measuring receivers；ElFor port i to j load matched error；SjjMeasured piece for connectivity port j is anti-
Penetrate the correction value of coefficient；
The makeover process of port j to i measuring receivers is identical with the makeover process of above-mentioned port i to j measuring receivers.
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108614230A (en) * | 2018-05-29 | 2018-10-02 | 中国电子科技集团公司第四十研究所 | A kind of simplification calibration method of the source power and receiver of lattice gauge |
| CN108845280A (en) * | 2018-05-29 | 2018-11-20 | 中国电子科技集团公司第四十研究所 | A kind of automatic testing method of Electronic Calibration part port |
| CN109254257A (en) * | 2018-11-12 | 2019-01-22 | 中电科仪器仪表有限公司 | A kind of mixing calibration method of multiport vector network analyzer |
| CN109254258A (en) * | 2018-11-12 | 2019-01-22 | 中电科仪器仪表有限公司 | A kind of complete calibration method for multi-port S parameter test device |
| CN110568283A (en) * | 2019-08-12 | 2019-12-13 | 中电科仪器仪表有限公司 | Active device intermodulation test device and test method |
| US11482779B2 (en) | 2019-07-12 | 2022-10-25 | Raytheon Company | Minimal phase matched test target injection for parallel receiver phase and amplitude alignment |
| CN115356541A (en) * | 2022-07-04 | 2022-11-18 | 广东健博通科技股份有限公司 | Multi-port antenna scattering parameter measuring method |
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| CN109254257A (en) * | 2018-11-12 | 2019-01-22 | 中电科仪器仪表有限公司 | A kind of mixing calibration method of multiport vector network analyzer |
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| CN109254258B (en) * | 2018-11-12 | 2020-08-04 | 中电科仪器仪表有限公司 | Complete calibration method for multi-port S parameter testing device |
| US11482779B2 (en) | 2019-07-12 | 2022-10-25 | Raytheon Company | Minimal phase matched test target injection for parallel receiver phase and amplitude alignment |
| CN110568283A (en) * | 2019-08-12 | 2019-12-13 | 中电科仪器仪表有限公司 | Active device intermodulation test device and test method |
| CN115356541A (en) * | 2022-07-04 | 2022-11-18 | 广东健博通科技股份有限公司 | Multi-port antenna scattering parameter measuring method |
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