CN108614230B - A kind of source power of lattice gauge and the simplification calibration method of receiver - Google Patents
A kind of source power of lattice gauge and the simplification calibration method of receiver Download PDFInfo
- Publication number
- CN108614230B CN108614230B CN201810526113.3A CN201810526113A CN108614230B CN 108614230 B CN108614230 B CN 108614230B CN 201810526113 A CN201810526113 A CN 201810526113A CN 108614230 B CN108614230 B CN 108614230B
- Authority
- CN
- China
- Prior art keywords
- port
- error
- receiver
- power
- source
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 238000000034 method Methods 0.000 title claims abstract description 17
- 238000012360 testing method Methods 0.000 claims abstract description 18
- 238000005259 measurement Methods 0.000 claims description 20
- 238000012937 correction Methods 0.000 claims description 12
- 230000005540 biological transmission Effects 0.000 claims description 6
- 238000010586 diagram Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 2
- 238000000605 extraction Methods 0.000 description 2
- 238000007792 addition Methods 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000007670 refining Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
Classifications
-
- 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
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Measurement Of Resistance Or Impedance (AREA)
- Monitoring And Testing Of Transmission In General (AREA)
Abstract
The invention discloses the simplification calibration methods of a kind of source power of lattice gauge and receiver, belong to Electronic Testing Technology field.The present invention when port j is as source, measures port j using port i as power meter in straight-through connection；Using source power and the error model of receiver calibration, when deriving straight-through connection, port j is as source, error calculation formula of the port i as power meter；Complete source power and receiver simplify calibration process；It simplifies in calibration, the connection number of power meter；The connection number in S parameter calibration process is not increased；It can be extended to N-port calibration.
Description
Technical Field
The invention belongs to the technical field of electronic test, and particularly relates to a simplified calibration method for source power and a receiver of a network instrument.
Background
The vector network analyzer is used for carrying out S parameter testing and comprises a radio frequency signal Source (RF Source in figure 1), reference receivers (a1, a2), measurement receivers (b1, b2) and the like. When power measurement is performed, calibration of the signal source power is required.
As the device is tested more and more considering the nonlinear characteristic, the characteristic of the device is realized at a specific power. Therefore, when a network instrument is used for testing such devices, the source power and the receiver calibration are needed to realize the accurate control of the source power output and the accurate measurement of the receiver.
The existing scheme is as follows:
a port i of the vector network analyzer is connected with a power meter to carry out source power calibration;
the port j of the vector network analyzer is connected with a power meter for power calibration;
calibrating the receiver parameter corresponding to the port i;
and calibrating the receiver parameter corresponding to the port j.
In the existing scheme, the source power and the receiver calibration of each port are regarded as independent parts, and the characteristic that the network instrument can be used as a source and a receiver is not utilized. The calibration process has multiple steps and high operation complexity.
When a network instrument is used for testing a power sensitive device, source power and a receiver need to be calibrated. When a plurality of ports are required to calibrate the source power and the receiver, the conventional method is to calibrate the source power and the receiver for each port. In addition, full-dual-port calibration is required, so that the calibration steps are multiple, the operation is complex, and human errors are easy to occur.
Disclosure of Invention
Aiming at the technical problems in the prior art, the invention provides a simplified calibration method for the source power and the receiver of the network instrument, which has reasonable design, overcomes the defects of the prior art and has good effect.
In order to achieve the purpose, the invention adopts the following technical scheme:
a simplified calibration method for source power and a receiver of a network instrument comprises the following steps:
step 1: resetting the vector network analyzer;
step 2: connecting the port i with a power meter, recording the reading of a reference receiver of the port i, and measuring the power P by the power metermeasThe uncorrected numerical value gamma of the reflection coefficient of the power meter measured by the vector network analyzerm；
And step 3: connecting the port i with the port j, performing double-port calibration on the port i and the port j, and recording all S parameter measurement values;
and 4, step 4: recording the reading a of the reference receiver of port j during a two-port calibration through-connectionjmReading b of the measurement receiver of port iim；
And 5: extracting the 10-term error of the double port;
step 6: obtaining the reflection coefficient gamma of the power meter according to a single-port error correction formulaps；
Wherein, gamma ispsIs the reflection coefficient of the power meter; gamma-shapedmThe uncorrected numerical value of the reflection coefficient of the power meter measured by the vector network analyzer is obtained; edIs the directivity error of port i; erTracking error for port i reflection; esSource match error for port i;
calculating receiver tracking error E of port i according to formula (3)rr；
Wherein E isrrIs the tracking error of the receiver; eprError from the test set of source powers for port i to the reference receiver; epsCollecting errors from a source power test set of a port i to an input end of a tested piece; edIs the directivity error of port i; erTracking error for port i reflection; esSource match error for port i; a isimA measurement signal of a reference receiver for port i; gamma-shapedpsIs the reflection coefficient of the power meter; pmeasMeasuring power for a power meter;
and 7: correcting S parameter in direct measurement by using 10 errors of double ports to obtain Sii、Sij、Sji；
And 8: when the port j is used as a source output signal, the port i and the port j are connected, and the measured power of the port i is obtained by using the formula (4)Parallel knotCalculating a receiver tracking error of the port j according to a closed formula (3);
wherein,measured power for port i; bi_reccorResponse correction value of the measurement receiver for port i; sii、Sjj、Sij、SjiS parameter of the straight-through piece in straight-through connection; elLoad matching errors for port j to port i;
and step 9: connecting a tested piece, and measuring the S parameter of the tested piece;
step 10: correcting the source power by using the error of the 10 items of S parameters and the tracking error of the receiver of the port;
step 11: correcting the measured value of the receiver according to the S parameter of the measured piece, the 10 errors and the tracking error of the receiver;
step 12: and finishing the correction.
Preferably, in step 5, the two-port 10-term errors are respectively: ediIs the directivity error of port i; edjIs the directivity error of port j; eriTracking error for port i reflection; erjThe reflection tracking error for port j; esiSource match error for port i; esjSource match error for port j; elijLoad matching errors for port j to port i; eljiMatching errors for port i to port j loads; etijTracking errors for port j to port i transmissions; etjiThe error is tracked for port i to port j transmissions.
The invention has the following beneficial technical effects:
when the port j is used as a source in the direct connection, the port i is used as a power meter to measure the port j; deducing an error calculation formula of a port j as a source and a port i as a power meter when the direct connection is carried out by utilizing the error model of source power and receiver calibration; the complete source power and the receiver simplify the calibration process; the connection times of the power meter in calibration are simplified; the connection times in the S parameter calibration process are not increased; it is scalable to N-port calibration.
Drawings
Fig. 1 is a schematic block diagram of a network analyzer.
Fig. 2 is a flow chart of a source power calibration signal.
Fig. 3 is a complete receiver power measurement signal flow diagram.
Fig. 4 is a simplified source power and receiver calibration flow diagram.
Detailed Description
The invention is described in further detail below with reference to the following figures and detailed description:
the invention provides a simplified calibration method for source power and a receiver of a network instrument, which can reduce calibration steps, improve test efficiency, reduce operation complexity and reduce human misoperation.
1. Network instrument source power calibration
Because it is a signal flow diagram that introduces a single port error, as shown in fig. 2, the error relationship is as follows:
wherein E isdIs a porti directivity error; erTracking error for port i reflection; esSource match error for port i; eprError from the source power test set to the reference receiver for port i; epsAnd (4) testing the error of the source power set to the input end of the tested piece for the port i.
2. Network instrument receiver calibration
And refining an error model flow chart of the network instrument, resolving a reference receiver error and a forward power transfer error, and introducing 10 error models. The signal flow after completion is shown in fig. 3.
Because it is a signal flow diagram that introduces 10 errors, the error relationship is as follows:
wherein E isdIs the directivity error of port i; erTracking error for port i reflection; esSource match error for port i; elMatch errors for the loads of ports i to j; etTracking errors for the transmission of ports i to j; eprError from the source power test set to the reference receiver for port i; epsAnd (4) testing the error of the source power set to the input end of the tested piece for the port i.
3. Error acquisition process
(1) Error extraction for port i connection power meter
With the signal flow as shown in fig. 2, it is possible to obtain:
wherein E isrrIs the tracking error of the receiver; eprSet of i source power tests to reference for portError of the receiver; epsCollecting errors from a source power test set of a port i to an input end of a tested piece; edIs the directivity error of port i; erTracking error for port i reflection; esSource match error for port i; a isimReferencing the receiver's measurement signal for port i; gamma-shapedpsAs a power meter
The reflection coefficient of (a); pmeasThe power is measured for the power meter.
(2) Error extraction when port j is connected to port i
When the port j outputs a signal as a source, the port i and the port j are connected. From FIG. 3, the following formula can be obtained
Wherein,measured power for port i; bi_reccorMeasuring a response correction value of the receiver for the port i; sii、Sjj、Sij、SjiS parameter of the straight-through piece in straight-through connection; elThe error is matched for the load of ports j to i.
And (3) replacing the power meter in the formula (3) with a port i to measure a correction signal of the receiver by using a formula (4), so that a receiver tracking error of a port j can be obtained.
Therefore, the acquisition of the tracking error of the receiver of the ports i and j can be completed by connecting the port i with the power meter and directly connecting the ports i and j. Further source power and receiver corrections for ports i, j can be made according to fig. 3.
4. A simplified source power and receiver calibration flow is shown in fig. 4.
A simplified calibration method for source power and a receiver of a network instrument comprises the following steps:
step 1: resetting the vector network analyzer;
step 2: connecting the port i with a power meter, recording the reading of a reference receiver of the port i, and measuring the power P by the power metermeasThe uncorrected numerical value gamma of the reflection coefficient of the power meter measured by the vector network analyzerm；
And step 3: connecting the port i with the port j, performing double-port calibration on the port i and the port j, and recording all S parameter measurement values;
and 4, step 4: recording the reading a of the reference receiver of port j during a two-port calibration through-connectionjmReading b of the measurement receiver of port iim；
And 5: extracting the 10-term error of the double port;
step 6: obtaining the reflection coefficient gamma of the power meter according to a single-port error correction formulaps；
Wherein, gamma ispsIs the reflection coefficient of the power meter; gamma-shapedmThe uncorrected numerical value of the reflection coefficient of the power meter measured by the vector network analyzer is obtained; edIs the directivity error of port i; erTracking error for port i reflection; esSource match error for port i;
calculating receiver tracking error E of port i according to formula (3)rr；
Wherein E isrrIs the tracking error of the receiver; eprError from the test set of source powers for port i to the reference receiver; epsCollecting errors from a source power test set of a port i to an input end of a tested piece; edIs the directivity error of port i; erTracking error for port i reflection; esSource match error for port i; a isimA measurement signal of a reference receiver for port i; gamma-shapedpsIs the reflection coefficient of the power meter; pmeasMeasuring power for a power meter;
and 7: correcting S parameter in direct measurement by using 10 errors of double ports to obtain Sii、Sij、Sji；
And 8: when the port j is used as a source output signal, the port i and the port j are connected, and the measured power of the port i is obtained by using the formula (4)And combining the formula (3), calculating the receiver tracking error of the port j;
wherein,measured power for port i; bi_reccorResponse correction value of the measurement receiver for port i; sii、Sjj、Sij、SjiS parameter of the straight-through piece in straight-through connection; elLoad matching errors for port j to port i;
and step 9: connecting a tested piece, and measuring the S parameter of the tested piece;
step 10: correcting the source power by using the error of the 10 items of S parameters and the tracking error of the receiver of the port;
step 11: correcting the measured value of the receiver according to the S parameter of the measured piece, the 10 errors and the tracking error of the receiver;
step 12: and finishing the correction.
In step 5, the errors of 10 terms in the double port are respectively: ediIs the directivity error of port i; edjIs the directivity error of port j; eriTracking error for port i reflection; erjThe reflection tracking error for port j; esiSource match error for port i; esjSource match error for port j; elijLoad matching errors for port j to port i; eljiMatching errors for port i to port j loads; etijTracking errors for port j to port i transmissions; etjiThe error is tracked for port i to port j transmissions.
It is to be understood that the above description is not intended to limit the present invention, and the present invention is not limited to the above examples, and those skilled in the art may make modifications, alterations, additions or substitutions within the spirit and scope of the present invention.
Claims (2)
1. A simplified calibration method for source power and receiver of a network instrument is characterized in that: the method comprises the following steps:
step 1: resetting the vector network analyzer;
step 2: connecting the port i with a power meter, recording the reading of a reference receiver of the port i, and measuring the power P by the power metermeasThe uncorrected numerical value gamma of the reflection coefficient of the power meter measured by the vector network analyzerm；
And step 3: connecting the port i with the port j, performing double-port calibration on the port i and the port j, and recording all S parameter measurement values;
and 4, step 4: recording the reading a of the reference receiver of port j during a two-port calibration through-connectionjmReading b of the measurement receiver of port iim；
And 5: extracting the 10-term error of the double port;
step 6: obtaining the reflection coefficient gamma of the power meter according to a single-port error correction formulaps；
Wherein, gamma ispsIs the reflection coefficient of the power meter; gamma-shapedmThe uncorrected numerical value of the reflection coefficient of the power meter measured by the vector network analyzer is obtained; edIs the directivity error of port i; erTracking error for port i reflection; esSource match error for port i;
calculating receiver tracking error E of port i according to formula (3)rr；
Wherein E isrrIs the tracking error of the receiver; eprError from the test set of source powers for port i to the reference receiver; epsCollecting errors from a source power test set of a port i to an input end of a tested piece; edIs the directivity error of port i; erTracking error for port i reflection; esSource match error for port i; a isimA measurement signal of a reference receiver for port i; gamma-shapedpsIs the reflection coefficient of the power meter; pmeasMeasuring power for a power meter;
and 7: correcting S parameter in direct measurement by using 10 errors of double ports to obtain Sii、Sij、Sji；
And 8: when the port j is taken as the source outputThe signal is connected with the port i and the port j, and the measured power of the port i is obtained by using the formula (4)And combining the formula (3), calculating the receiver tracking error of the port j;
wherein,measured power for port i; bi_reccorResponse correction value of the measurement receiver for port i; sii、Sjj、Sij、SjiS parameter of the straight-through piece in straight-through connection; elLoad matching errors for port j to port i;
and step 9: connecting a tested piece, and measuring the S parameter of the tested piece;
step 10: correcting the source power by using the error of the 10 items of S parameters and the tracking error of the receiver of the port;
step 11: correcting the measured value of the receiver according to the S parameter of the measured piece, the 10 errors and the tracking error of the receiver;
step 12: and finishing the correction.
2. The simplified calibration method for source power and receiver of network instruments of claim 1, characterized in that: in step 5, the errors of 10 terms in the double port are respectively: ediIs the directivity error of port i; edjIs the directivity error of port j; eriTracking error for port i reflection; erjThe reflection tracking error for port j; esiSource match error for port i; esjSource match error for port j; elijLoad matching errors for port j to port i; eljiMatching errors for port i to port j loads; etijFor port j to port iInputting a tracking error; etjiThe error is tracked for port i to port j transmissions.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810526113.3A CN108614230B (en) | 2018-05-29 | 2018-05-29 | A kind of source power of lattice gauge and the simplification calibration method of receiver |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810526113.3A CN108614230B (en) | 2018-05-29 | 2018-05-29 | A kind of source power of lattice gauge and the simplification calibration method of receiver |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108614230A CN108614230A (en) | 2018-10-02 |
| CN108614230B true CN108614230B (en) | 2019-09-24 |
Family
ID=63664371
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810526113.3A Active CN108614230B (en) | 2018-05-29 | 2018-05-29 | A kind of source power of lattice gauge and the simplification calibration method of receiver |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108614230B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7652484B2 (en) * | 2007-02-22 | 2010-01-26 | Agilent Technologies, Inc. | Self calibration apparatus and methods |
| CN102279376B (en) * | 2011-06-20 | 2014-06-11 | 南京航空航天大学 | Method for calibrating two-port vector network analyzer based on ten-error model |
| CN103954926A (en) * | 2014-05-09 | 2014-07-30 | 中国电子科技集团公司第四十一研究所 | Vector network analyzer multi-port calibrating method capable of simplifying through connection |
| CN107144806A (en) * | 2017-06-09 | 2017-09-08 | 中国电子科技集团公司第四十研究所 | A kind of lattice gauge receiver calibration method for introducing matching amendment |
-
2018
- 2018-05-29 CN CN201810526113.3A patent/CN108614230B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7652484B2 (en) * | 2007-02-22 | 2010-01-26 | Agilent Technologies, Inc. | Self calibration apparatus and methods |
| CN102279376B (en) * | 2011-06-20 | 2014-06-11 | 南京航空航天大学 | Method for calibrating two-port vector network analyzer based on ten-error model |
| CN103954926A (en) * | 2014-05-09 | 2014-07-30 | 中国电子科技集团公司第四十一研究所 | Vector network analyzer multi-port calibrating method capable of simplifying through connection |
| CN107144806A (en) * | 2017-06-09 | 2017-09-08 | 中国电子科技集团公司第四十研究所 | A kind of lattice gauge receiver calibration method for introducing matching amendment |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108614230A (en) | 2018-10-02 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN109444717B (en) | Novel on-chip S parameter error calibration method and device | |
| CN108802510B (en) | Integrated noise parameter measuring device and measuring method | |
| US6397160B1 (en) | Power sensor module for microwave test systems | |
| CN103399286A (en) | Measurement calibration method for multi-characteristic impedance network | |
| CN105044637A (en) | Calibration apparatus and calibration method for calibrating vector network analyser | |
| CN108614231B (en) | Rapid calibration method based on electronic calibration piece | |
| CN110954809B (en) | Vector calibration quick correction method for large signal test | |
| CN103837767B (en) | A kind of method utilizing arrow net that reciprocal mixing device is carried out characteristic present | |
| CN109239634B (en) | Method for calibrating two-port vector network analyzer based on ridge regression | |
| CN103760509A (en) | Multi-port vector network analyzer calibrating method involved with switch compensating errors | |
| CN107144806A (en) | A kind of lattice gauge receiver calibration method for introducing matching amendment | |
| CN112698257B (en) | Method for analyzing influence of hardware indexes of vector network analyzer on measurement precision | |
| CN107300682A (en) | A kind of lattice gauge source power calibration method for introducing matching amendment | |
| US20130317767A1 (en) | Measurement error correction method and electronic component characteristic measurement apparatus | |
| CN108508287A (en) | Measurement method based on vector network analyzer and power meter measurement noise coefficient | |
| CN105976411A (en) | Prepositioned measuring module for electrical impedance tomography imaging data acquisition system and alignment and calibration method | |
| CN110568283A (en) | Active device intermodulation test device and test method | |
| CN108614230B (en) | A kind of source power of lattice gauge and the simplification calibration method of receiver | |
| JP2008304450A (en) | Vector network analyzer-noise figure measurement | |
| CN114459573A (en) | Novel calibration model and calibration method of ultrasonic gas meter and ultrasonic gas meter | |
| CN110763977B (en) | System and method for quantitatively measuring and evaluating precision of noise test system | |
| CN104062510B (en) | The two-port reciprocity feeder line insert loss method farther out of measurement error can be reduced | |
| CN109583575A (en) | The processing method of instrument Vector Signal Analysis performance is improved based on deep learning | |
| US20120265469A1 (en) | Calibration method and device | |
| CN215494086U (en) | Error calibration device of differential voltage transformer |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |