CN110391854A - The power calibrating method and device of wireless radios - Google Patents
The power calibrating method and device of wireless radios Download PDFInfo
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- CN110391854A CN110391854A CN201910698303.8A CN201910698303A CN110391854A CN 110391854 A CN110391854 A CN 110391854A CN 201910698303 A CN201910698303 A CN 201910698303A CN 110391854 A CN110391854 A CN 110391854A
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- power
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- 238000000034 method Methods 0.000 title claims abstract description 27
- 238000012360 testing method Methods 0.000 claims abstract description 90
- 239000002131 composite material Substances 0.000 claims abstract description 31
- 238000002955 isolation Methods 0.000 claims abstract description 11
- 230000005540 biological transmission Effects 0.000 claims description 7
- 238000012545 processing Methods 0.000 claims description 4
- 238000010586 diagram Methods 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 1
- 238000010923 batch production Methods 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B17/00—Monitoring; Testing
- H04B17/10—Monitoring; Testing of transmitters
- H04B17/11—Monitoring; Testing of transmitters for calibration
- H04B17/13—Monitoring; Testing of transmitters for calibration of power amplifiers, e.g. gain or non-linearity
Abstract
The present invention relates to a kind of power calibrating method of wireless radios and devices, described device includes standard antenna, wireless composite tester, host computer and the test box through electromagnetic isolation, the standard antenna and wireless radios are fixed in the test box, the wireless radios are connect by cable with the host computer, the standard antenna is connect by radio frequency line with the wireless composite tester, and the wireless composite tester connection is connect by cable with the host computer.The present invention can effectively improve testing efficiency, reduce test error.
Description
Technical field
The present invention relates to wireless communication technology field, in particular to the power calibrating method and dress of a kind of wireless radios
It sets.
Background technique
Currently, less radio-frequency product requires to calibrate its transmission power before factory, in factory's batch production
When be required to arrange the link.Traditional calibrating mode needs worker to be manually manually attachable to the radio-frequency cable of test equipment
The antenna opening of each less radio-frequency product to be measured, and also need to consider the abrasion of radio-frequency cable connector after repeatedly testing, it is whole
A test process is also required to take a lot of time, and can also participate in excessive and worker production habit and level of skill not because of artificial
It is same the problem of test error and efficiency occur.
Summary of the invention
Based on this, it is necessary to provide the power calibrating method and device of a kind of wireless radios, test can be effectively improved
Efficiency reduces test error.
For achieving the above object, the present invention uses following technical scheme.
Present invention firstly provides a kind of power calibrating methods of wireless radios, comprising steps of
Configuration standard antenna, the gain of the standard antenna are 3 ± 0.2dBi；
Configuration test environment, the standard antenna and the wireless radios are statically placed in the test environment；
Electromagnetic isolation processing is carried out to the test environment；
Test equipment is set up, the test equipment includes wireless composite tester, host computer and radio frequency line, the no twine helad
It closes tester to connect by the radio frequency line with the standard antenna, the wireless radios connect described upper by cable
Machine, the host computer connect the wireless composite tester by cable；
Booting test, the wireless radios booting, and emit wireless signal to the test environment, utilize the mark
Quasi- antenna receives the wireless signal of wireless radios, and received power is read using the wireless composite tester
Value；
The calibration of power, according to the performance number, using the host computer to the output powers of the wireless radios into
Row calibration.
In the power calibrating method of above-mentioned wireless radios, the erection test equipment the step of before, further include step
It is rapid:
Calculate the wireless channel loss of the test environment.
In the power calibrating method of above-mentioned wireless radios, described the step of calculating the wireless channel loss for testing environment
It specifically includes:
Signal source is replaced into the wireless radios, is believed using the radio frequency that the standard antenna receives the signal source
Number, and the performance number of the radiofrequency signal is read using the wireless composite tester, based on the received performance number and described
The difference of the transmission power of signal source calculates the wireless channel loss of the test environment.
In the power calibrating method of above-mentioned wireless radios, the step of calibration of power, further comprises:
The output power of the wireless radios is compensated according to wireless channel loss.
In the power calibrating method of above-mentioned wireless radios, the standard antenna is omnidirectional antenna, and standing-wave ratio is little
In 1.2.
In the power calibrating method of above-mentioned wireless radios, in the test environment, the wireless radios pass through
Special fixture is fixed.
Secondly, the present invention also provides a kind of calibration of power device of wireless radios, including standard antenna, wireless composite
Tester, host computer and the test box through electromagnetic isolation, the standard antenna and wireless radios are fixed on the test box
Interior, the wireless radios connects by cable with the host computer, the standard antenna by radio frequency line with it is described wirelessly
Comprehensive tester connection, the wireless composite tester connection are connect by cable with the host computer.
In the calibration of power device of above-mentioned wireless radios, the standard antenna be omnidirectional antenna, gain be 3 ±
0.2dBi, and its standing-wave ratio is not more than 1.2.
It further include wireless channel loss test device in the calibration of power device of above-mentioned wireless radios, it is described wireless
Channel loss test device is suitable for that the wireless radios is replaced to emit radiofrequency signal to the standard antenna, makes described wireless
Comprehensive tester and host computer calculate the wireless channel loss of the test box.
In the calibration of power device of above-mentioned wireless radios, the wireless radios are fixed on institute by special fixture
It states in test box.
The power calibrating method and device of wireless radios of the invention by standard antenna, wireless composite tester,
Host computer and test box through electromagnetic isolation, and the standard antenna and wireless radios are fixed in the test box,
The wireless radios are connect by cable with the host computer, and the standard antenna passes through radio frequency line and the wireless composite
Tester connection, the technical solution that the wireless composite tester connection is connect by cable with the host computer, so as to nothing
The power test of line radio-frequency apparatus and calibration become very simple and efficient, have not both needed manually respectively to be connected to radio-frequency cable
The antenna opening of wireless radios to be measured is not needed using expensive test equipment, it is only necessary to read standard antenna and be received yet
The power of the radiofrequency signal arrived can calculate wireless radios to be measured further according to the radio frequency parameter of standard antenna itself
Output power, and according to its output power, it can be calibrated using host computer, it is very convenient quick, and accuracy
It is high.
Detailed description of the invention
Fig. 1 is the flow diagram of the power calibrating method of wireless radios in the present embodiment；
Fig. 2 is the topological structure schematic diagram of the calibration of power device of wireless radios in the present embodiment.
The realization of the object of the invention and its function, principle will be further elaborated in conjunction with attached drawing in a specific embodiment.
Specific embodiment
With reference to the accompanying drawing and specific embodiment is described further.
As shown in Figure 1, the present embodiment provides a kind of power calibrating method of wireless radios, for to be measured wireless
The output power of radio-frequency apparatus (hereinafter referred to as " DUT ") is tested and is calibrated, and this method mainly comprises the steps that
S1: configuration standard antenna, the gain of the standard antenna are 3 ± 0.2dBi；
S2: the standard antenna and DUT are statically placed in the test environment by configuration test environment；
S3: electromagnetic isolation processing is carried out to the test environment；
S4: test equipment is set up, the test equipment includes wireless composite tester, host computer and radio frequency line, the nothing
Line generalization tester is connect by the radio frequency line with the standard antenna, and the DUT connects the host computer, institute by cable
It states host computer and the wireless composite tester is connected by cable；
S5: booting test, DUT booting, and emit wireless signal to the test environment, it is received using the standard antenna
The wireless signal of DUT, and received performance number is read using the wireless composite tester；
S6: the calibration of power is calibrated according to the performance number using output power of the host computer to DUT.
The present embodiment uses gain for the standard antenna of 3 ± 0.2dBi, is on the one hand because the antenna of the gain power is suitable
It is wide with range, it can substantially cover the radio frequency output of most of common electronic equipment and receive.On the other hand, the antenna type
More comprehensively, selectable specification is more, and standing-wave ratio is also smaller.For the accuracy and sensitivity for further promoting test, this reality
It applies example and selects omnidirectional antenna, and its standing-wave ratio need to be not more than 1.2.
In step s 2, to simplify test program, testing cost is reduced, the test box of a sealing can be selected in the present embodiment
As test environment, and standard antenna and DUT are separately fixed in the test box, standard antenna and DUT is made to rest on survey
The determination position in case is tried, its relative position must not be arbitrarily put or change.
For convenient for that can be rapidly assembled and disassembled DUT when batch testing, the DUT of the present embodiment is solid by special fixture or jig
It is scheduled in test box, the special fixture or jig need to have quick releasing function, to promote testing efficiency.
In order to avoid the interference of external electromagnetic wave, the present embodiment setting steps S3 carries out electromagnetism to the test environment
The step of isolation processing, implementing the step has many methods, and simplest method is, using metal or other can shield electromagnetic wave
Material make test box, make test box formed an electromagnetic isolation space, to guarantee measuring accuracy.
It, can implementation steps S4, i.e. erection test equipment after above step is completed.Certainly, before step S 4, also need
Increase following steps:
S35: the wireless channel loss of the test environment is calculated.
Since the decaying of wireless signal can all occur in any environment, wireless signal emits it from DUT with certain power
Afterwards, the power received by standard antenna be bound to it is smaller than transmission power, the difference between the two be wireless channel loss.For identical
Antenna and test environment, wireless channel loss it is substantially identical.Therefore in order to really restore the transmission power of DUT, need
The wireless channel loss of the test environment is calculated first.Specific method is with reference to as follows:
Signal source is replaced into the DUT, receives the radiofrequency signal that the signal source issues, and benefit using the standard antenna
The performance number of the radiofrequency signal is read with the wireless composite tester, based on the received performance number and the signal source
The difference of transmission power calculates the wireless channel loss of the test environment.
Then, the output power of the DUT is compensated further according to wireless channel loss, to obtain accurately
Test data.
After the completion of test, calibrates using output power of the above-mentioned test equipment to DUT, wanted with reaching factory
It asks.
Referring to shown in Fig. 2, the present embodiment also provides a kind of calibration of power device of wireless radios, can be used for described
The output power of DUT is tested and is calibrated.It mainly includes standard antenna, wireless composite tester, host computer and through electromagnetism
The test box of isolation, the standard antenna and wireless radios are fixed in the test box, and the wireless radios are logical
It crosses cable to connect with the host computer, the standard antenna is connect by radio frequency line with the wireless composite tester, the nothing
The connection of line generalization tester is connect by cable with the host computer.
The standard antenna of the present embodiment is also omnidirectional antenna, and gain is 3 ± 0.2dBi, and its standing-wave ratio is not more than 1.2,
Specific reason can refer to described in embodiment illustrated in fig. 1, and details are not described herein again.
The comprehensive survey of MT8820C, MT8870A, 8922M or other models can be selected in the wireless composite tester of the present embodiment
Instrument, concrete model and rule are unlimited, are selected with specific reference to the output power of DUT.
In order to calculate the loss of the wireless channel in test box, the present embodiment is provided with wireless channel loss test device,
The wireless channel loss test device replaces the DUT using signal sources such as IQxel testers, by the signal source, utilizes institute
It states standard antenna and receives the radiofrequency signal that the signal source issues, and read the radiofrequency signal using the wireless composite tester
Performance number, the difference of the transmission power of performance number and the signal source, calculates the test environment based on the received
Wireless channel loss.
Similarly, the DUT need to be fixed in test box by special fixture or jig, and the special fixture or jig need to have
Standby quick releasing function, to promote testing efficiency.
Then, the output power of the DUT is compensated further according to wireless channel loss, to obtain accurately
Test data.
After the completion of test, calibrates using output power of the above-mentioned test equipment to DUT, wanted with reaching factory
It asks.
In conclusion the power calibrating method and device of wireless radios of the invention pass through standard antenna, without twine helad
Close tester, host computer and the test box through electromagnetic isolation, and the standard antenna and wireless radios be fixed on it is described
In test box, the wireless radios are connect by cable with the host computer, and the standard antenna passes through radio frequency line and institute
State the connection of wireless composite tester, the technical side that the wireless composite tester connection is connect by cable with the host computer
Case had not both needed manually penetrate respectively so that the power test and calibration to wireless radios become very simple and efficient
Frequency cable connection is not needed using expensive test equipment, it is only necessary to read mark to the antenna opening of wireless radios to be measured yet
The power of radiofrequency signal received by quasi- antenna can calculate nothing to be measured further according to the radio frequency parameter of standard antenna itself
The output power of line radio-frequency apparatus, and according to its output power, it can be calibrated using host computer, it is very convenient fast
Victory, and accuracy is high.
Each technical characteristic of embodiment described above can be combined arbitrarily, for simplicity of description, not to above-mentioned reality
It applies all possible combination of each technical characteristic in example to be all described, as long as however, the combination of these technical characteristics is not deposited
In contradiction, all should be considered as described in this specification.
The embodiments described above only express several embodiments of the present invention, and the description thereof is more specific and detailed, but simultaneously
Limitations on the scope of the patent of the present invention therefore cannot be interpreted as.It should be pointed out that for those of ordinary skill in the art
For, without departing from the inventive concept of the premise, various modifications and improvements can be made, these belong to guarantor of the invention
Protect range.
Claims (10)
1. a kind of power calibrating method of wireless radios, which is characterized in that comprising steps of
Configuration standard antenna, the gain of the standard antenna are 3 ± 0.2dBi；
Configuration test environment, the standard antenna and the wireless radios are statically placed in the test environment；
Electromagnetic isolation processing is carried out to the test environment；
Test equipment is set up, the test equipment includes wireless composite tester, host computer and radio frequency line, and the wireless composite is surveyed
Examination instrument is connect by the radio frequency line with the standard antenna, and the wireless radios connect the host computer by cable,
The host computer connects the wireless composite tester by cable；
Booting test, the wireless radios booting, and emit wireless signal to the test environment, utilize the standard day
Line receives the wireless signal of wireless radios, and received performance number is read using the wireless composite tester；
The calibration of power carries out school using output power of the host computer to the wireless radios according to the performance number
It is quasi-.
2. the power calibrating method of wireless radios as described in claim 1, which is characterized in that set in erection test
Before standby step, further comprise the steps of:
Calculate the wireless channel loss of the test environment.
3. the power calibrating method of wireless radios as claimed in claim 2, which is characterized in that environment is tested in the calculating
Wireless channel loss the step of specifically include:
Signal source is replaced into the wireless radios, the radiofrequency signal of the signal source is received using the standard antenna, and
The performance number of the radiofrequency signal is read using the wireless composite tester, based on the received performance number and the signal source
Transmission power difference, calculate it is described test environment wireless channel loss.
4. the power calibrating method of wireless radios as claimed in claim 3, which is characterized in that the step of the calibration of power
Suddenly further comprise:
The output power of the wireless radios is compensated according to wireless channel loss.
5. the power calibrating method of the wireless radios as described in any one of Claims 1 to 4, which is characterized in that described
Standard antenna is omnidirectional antenna, and standing-wave ratio is not more than 1.2.
6. the power calibrating method of wireless radios as claimed in claim 5, which is characterized in that in the test environment,
The wireless radios are fixed by special fixture.
7. a kind of calibration of power device of wireless radios, it is characterised in that: including standard antenna, wireless composite tester,
Host computer and test box through electromagnetic isolation, the standard antenna and wireless radios are fixed in the test box, described
Wireless radios are connect by cable with the host computer, and the standard antenna is tested by radio frequency line and the wireless composite
Instrument connection, the wireless composite tester connection are connect by cable with the host computer.
8. the calibration of power device of wireless radios as claimed in claim 7, it is characterised in that: the standard antenna is complete
To antenna, gain is 3 ± 0.2dBi, and its standing-wave ratio is not more than 1.2.
9. the calibration of power device of wireless radios as claimed in claim 7, it is characterised in that: further include wireless channel damage
Test device is consumed, the wireless channel loss test device is suitable for emitting instead of the wireless radios to the standard antenna
Radiofrequency signal makes the wireless composite tester and host computer calculate the wireless channel loss of the test box.
10. the calibration of power device of wireless radios as claimed in claim 7, it is characterised in that: the less radio-frequency is set
It is standby to be fixed in the test box by special fixture.
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| CN201910698303.8A CN110391854A (en) | 2019-07-31 | 2019-07-31 | The power calibrating method and device of wireless radios |
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| CN201910698303.8A CN110391854A (en) | 2019-07-31 | 2019-07-31 | The power calibrating method and device of wireless radios |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112543053A (en) * | 2020-11-19 | 2021-03-23 | 深圳市友华通信技术有限公司 | BOB online correction method based on automatic calibration process |
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