CN210075247U - Power calibration device of radio frequency equipment - Google Patents
Power calibration device of radio frequency equipment Download PDFInfo
- Publication number
- CN210075247U CN210075247U CN201921251538.4U CN201921251538U CN210075247U CN 210075247 U CN210075247 U CN 210075247U CN 201921251538 U CN201921251538 U CN 201921251538U CN 210075247 U CN210075247 U CN 210075247U
- Authority
- CN
- China
- Prior art keywords
- radio frequency
- wireless
- standard antenna
- test
- antenna
- 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
Images
Landscapes
- Monitoring And Testing Of Transmission In General (AREA)
Abstract
The utility model relates to a power calibrating device of wireless radio frequency equipment, the device includes standard antenna, wireless integrated tester, host computer and through the test box of electromagnetism isolation, standard antenna and wireless radio frequency equipment are fixed in the test box, wireless radio frequency equipment pass through the net twine with the host computer is connected, standard antenna pass through the radio frequency line with wireless integrated tester connects, wireless integrated tester connect through the net twine with the host computer is connected. The utility model discloses can effectively improve efficiency of software testing, reduce test error.
Description
Technical Field
The utility model relates to a wireless communication technology field, in particular to power calibrating device of radio frequency equipment.
Background
Currently, radio frequency products need to be calibrated before leaving factories, and this link needs to be arranged when the products are produced in batches in factories. The traditional calibration method needs a worker to manually connect the radio frequency cable of the test instrument to the antenna port of each wireless radio frequency product to be tested, the abrasion of the radio frequency cable connector needs to be considered after multiple tests, the whole test process also needs to spend much time, and the problems of test errors and efficiency can also occur due to excessive manual participation and different production habits and skill levels of the worker.
SUMMERY OF THE UTILITY MODEL
Therefore, there is a need for a power calibration apparatus for a radio frequency device, which can effectively improve the test efficiency and reduce the test error.
In order to achieve the above purpose, the present invention adopts the following technical solutions.
The utility model provides a power calibrating device of wireless radio frequency equipment, including standard antenna, wireless integrated tester, host computer and through the test box of electromagnetism isolation, standard antenna and wireless radio frequency equipment are fixed in the test box, wireless radio frequency equipment pass through the net twine with the host computer is connected, standard antenna pass through the radio frequency line with wireless integrated tester connects, wireless integrated tester connect through the net twine with the host computer is connected.
In the power calibration device of the above-mentioned radio frequency device, the standard antenna is an omnidirectional antenna, the gain of the standard antenna is 3 ± 0.2dBi, and the standing-wave ratio of the standard antenna is not greater than 1.2.
The power calibration device of the wireless radio frequency equipment further comprises a wireless channel loss testing device, wherein the wireless channel loss testing device is suitable for replacing the wireless radio frequency equipment to transmit radio frequency signals to the standard antenna, so that the wireless integrated tester and the upper computer calculate the wireless channel loss of the testing box.
In the power calibration device of the wireless radio frequency equipment, the wireless radio frequency equipment is fixed in the test box through a special clamp.
The power calibration device of the wireless radio frequency equipment of the utility model passes through a standard antenna, a wireless integrated tester, an upper computer and a test box isolated by electromagnetism, and the standard antenna and the wireless radio frequency equipment are fixed in the test box, the wireless radio frequency equipment is connected with the upper computer by a network cable, the standard antenna is connected with the wireless integrated tester by a radio frequency cable, the wireless integrated tester is connected with the upper computer by the network cable, so that the power test and calibration of the wireless radio frequency equipment become very simple and efficient, a radio frequency cable is not needed to be respectively connected to an antenna port of the wireless radio frequency equipment to be tested by manpower, expensive test equipment is not needed, only the power of a radio frequency signal received by the standard antenna is needed to be read, and the output power of the wireless radio frequency equipment to be tested can be calculated according to the radio frequency parameters of the standard antenna, and according to its output power, utilize the host computer can be to its calibration, very convenient and fast, and the degree of accuracy is high moreover.
Drawings
Fig. 1 is a schematic diagram of a topology structure of a power calibration apparatus of a radio frequency device in this embodiment.
Fig. 2 is a schematic flowchart of a calibration method adopted by the power calibration apparatus of the radio frequency device in this embodiment;
the purpose of the present invention, its function and principle will be further elucidated in the detailed description with reference to the accompanying drawings.
Detailed Description
The following further description is made with reference to the drawings and specific embodiments.
Referring to fig. 1, this embodiment further provides a power calibration apparatus for a radio frequency device, which can be used to test and calibrate the output power of a radio frequency device under test (hereinafter referred to as "DUT"). It mainly includes standard antenna, wireless integrated tester, host computer and through the test box of electromagnetism isolation, standard antenna and wireless radio frequency equipment are fixed in the test box, wireless radio frequency equipment pass through the net twine with the host computer is connected, standard antenna pass through the radio frequency line with wireless integrated tester connects, wireless integrated tester connect through the net twine with the host computer is connected.
The standard antenna with the gain of 3 +/-0.2 dBi is adopted in the embodiment, on one hand, the antenna with the gain power has a wide application range, and can basically cover radio frequency output and reception of most common electronic equipment. On the other hand, the antenna has the advantages of comprehensive types, multiple selectable specifications and smaller standing-wave ratio. In order to further improve the accuracy and sensitivity of the test, the omni-directional antenna is selected in the embodiment, and the standing-wave ratio of the omni-directional antenna is not more than 1.2.
The wireless integrated tester of the embodiment can be selected from MT8820C, MT8870A, 8922M or other types of integrated testers, and the specific type and rule are not limited, and are selected according to the output power of the DUT.
In order to simplify the testing procedure and reduce the testing cost, in this embodiment, a sealed testing box is selected as the testing environment, and the standard antenna and the DUT are respectively fixed in the testing box, so that the standard antenna and the DUT are placed at certain positions in the testing box and cannot be randomly placed or changed in relative positions.
Can install fast and dismantle the DUT when being convenient for batch test, the DUT of this embodiment passes through special fixture or tool to be fixed in the test box, and this special fixture or tool need possess the quick detach function to promote efficiency of software testing.
In order to avoid the interference of external electromagnetic waves, the present embodiment performs electromagnetic isolation processing on the test environment, and the electromagnetic isolation method is many, and the simplest method is to manufacture the test box by using metal or other materials capable of shielding electromagnetic waves, so that the test box forms an electromagnetic isolation space to ensure the test precision.
In addition, the embodiment also needs to calculate the radio channel loss of the test environment.
Since the wireless signal is attenuated in any environment, the power received by the standard antenna after the wireless signal is transmitted from the DUT with a certain power must be smaller than the transmission power, and the difference between the two is the wireless channel loss. The radio channel loss is substantially the same for the same antenna and test environment. Therefore, in order to truly restore the transmission power of the DUT, the radio channel loss of the test environment needs to be calculated first. The specific method is as follows:
and replacing the DUT with a signal source, receiving the radio-frequency signal sent by the signal source by using the standard antenna, reading the power value of the radio-frequency signal by using the wireless comprehensive tester, and calculating the wireless channel loss of the test environment according to the difference value between the received power value and the transmitting power of the signal source.
And then, compensating the output power of the DUT according to the wireless channel loss so as to obtain accurate test data.
After the test is finished, the output power of the DUT can be calibrated by using the test equipment so as to meet the factory requirements.
The power calibration apparatus of the radio frequency device in this embodiment may complete the testing and calibration of the output power of the DUT (as shown in fig. 2) by using the following steps, which mainly include the following steps:
s1: configuring a standard antenna, wherein the gain of the standard antenna is 3 +/-0.2 dBi;
s2: configuring a test environment, and statically placing the standard antenna and the DUT in the test environment;
s3: performing electromagnetic isolation processing on the test environment;
s4: erecting test equipment, wherein the test equipment comprises a wireless integrated tester, an upper computer and a radio frequency line, the wireless integrated tester is connected with the standard antenna through the radio frequency line, the DUT is connected with the upper computer through a network cable, and the upper computer is connected with the wireless integrated tester through the network cable;
s5: starting up a test, wherein a DUT (device under test) is started up, a wireless signal is transmitted to the test environment, the wireless signal of the DUT is received by the standard antenna, and the received power value is read by the wireless comprehensive tester;
s6: and power calibration, namely calibrating the output power of the DUT by using the upper computer according to the power value.
In step S2, to simplify the testing procedure and reduce the testing cost, the present embodiment may select a sealed testing box as the testing environment, and fix the standard antenna and the DUT in the testing box, respectively, so that the standard antenna and the DUT are left at certain positions in the testing box, and cannot be randomly placed or changed in relative positions.
Can install fast and dismantle the DUT when being convenient for batch test, the DUT of this embodiment passes through special fixture or tool to be fixed in the test box, and this special fixture or tool need possess the quick detach function to promote efficiency of software testing.
In order to avoid the interference of external electromagnetic waves, the present embodiment provides step S3, that is, the step of performing electromagnetic isolation processing on the test environment, and there are many methods for implementing this step, and the simplest method is to use metal or other materials capable of shielding electromagnetic waves to make the test box form an electromagnetic isolation space, so as to ensure the test precision.
After the above steps are completed, step S4 is performed, i.e., the testing equipment is erected. Of course, before step S4, the following steps are added:
s35: calculating the radio channel loss of the test environment.
Since the wireless signal is attenuated in any environment, the power received by the standard antenna after the wireless signal is transmitted from the DUT with a certain power must be smaller than the transmission power, and the difference between the two is the wireless channel loss. The radio channel loss is substantially the same for the same antenna and test environment. Therefore, in order to truly restore the transmission power of the DUT, the radio channel loss of the test environment needs to be calculated first. The specific method is as follows:
and replacing the DUT with a signal source, receiving the radio-frequency signal sent by the signal source by using the standard antenna, reading the power value of the radio-frequency signal by using the wireless comprehensive tester, and calculating the wireless channel loss of the test environment according to the difference value between the received power value and the transmitting power of the signal source.
And then, compensating the output power of the DUT according to the wireless channel loss so as to obtain accurate test data.
After the test is finished, the output power of the DUT can be calibrated by using the test equipment so as to meet the factory requirements.
To sum up, the power calibration device of the wireless radio frequency equipment of the utility model is characterized in that the power calibration device of the wireless radio frequency equipment of the utility model passes through a standard antenna, a wireless integrated tester, an upper computer and a test box isolated by electromagnetism, the standard antenna and the wireless radio frequency equipment are fixed in the test box, the wireless radio frequency equipment is connected with the upper computer through a network cable, the standard antenna is connected with the wireless integrated tester through a radio frequency cable, the wireless integrated tester is connected with the upper computer through the network cable, the power test and calibration of the wireless radio frequency equipment become very simple and efficient, the radio frequency cable is not needed to be connected to the antenna port of the wireless radio frequency equipment to be tested manually, expensive test equipment is not needed, only the power of the radio frequency signal received by the standard antenna is needed to be read, and the output power of the wireless radio frequency equipment to be tested can be calculated according to the radio frequency parameters of the standard antenna, and according to its output power, utilize the host computer can be to its calibration, very convenient and fast, and the degree of accuracy is high moreover.
The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The above-mentioned embodiments only represent some embodiments of the present invention, and the description thereof is specific and detailed, but not to be construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention.
Claims (4)
1. A power calibration apparatus for a wireless radio frequency device, comprising: including standard antenna, wireless integrated tester, host computer and through the test box of electromagnetism isolation, standard antenna and wireless radio frequency equipment are fixed in the test box, wireless radio frequency equipment pass through the net twine with the host computer is connected, standard antenna pass through the radio frequency line with wireless integrated tester connects, wireless integrated tester connect through the net twine with the host computer is connected.
2. The power calibration apparatus of a wireless radio frequency device according to claim 1, wherein: the standard antenna is an omnidirectional antenna, the gain of the standard antenna is 3 +/-0.2 dBi, and the standing-wave ratio of the standard antenna is not more than 1.2.
3. The power calibration apparatus of a wireless radio frequency device according to claim 1, wherein: the wireless channel loss testing device is suitable for replacing the wireless radio frequency equipment to transmit radio frequency signals to the standard antenna, so that the wireless comprehensive tester and the upper computer calculate the wireless channel loss of the testing box.
4. The power calibration apparatus of a wireless radio frequency device according to claim 1, wherein: the radio frequency equipment is fixed in the test box through a special clamp.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921251538.4U CN210075247U (en) | 2019-07-31 | 2019-07-31 | Power calibration device of radio frequency equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921251538.4U CN210075247U (en) | 2019-07-31 | 2019-07-31 | Power calibration device of radio frequency equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210075247U true CN210075247U (en) | 2020-02-14 |
Family
ID=69430838
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921251538.4U Active CN210075247U (en) | 2019-07-31 | 2019-07-31 | Power calibration device of radio frequency equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210075247U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110391854A (en) * | 2019-07-31 | 2019-10-29 | 深圳市友华通信技术有限公司 | The power calibrating method and device of wireless radios |
-
2019
- 2019-07-31 CN CN201921251538.4U patent/CN210075247U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110391854A (en) * | 2019-07-31 | 2019-10-29 | 深圳市友华通信技术有限公司 | The power calibrating method and device of wireless radios |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN107566053B (en) | Method and system for testing radio frequency index and computer readable storage medium | |
| US10601695B2 (en) | Systems and methods for radio channel emulation of a multiple input multiple output (MIMO) wireless link | |
| US8706044B2 (en) | Methods of testing wireless devices in over-the-air radio-frequency test systems without path loss characterization | |
| US8660812B2 (en) | Methods for calibrating over-the-air path loss in over-the-air radio-frequency test systems | |
| US8527229B2 (en) | Test systems with multiple antennas for characterizing over-the-air path loss | |
| CN104853021A (en) | Method and device for calibrating mobile phone production test system | |
| US11962357B2 (en) | Method and system for testing wireless performance of wireless terminal | |
| TWI658705B (en) | Multi-antenna noise power measuring method and apparatus | |
| CN111385036B (en) | Radio frequency performance test method and device of wireless equipment and tester | |
| CN110535539B (en) | Power compensation method, device, equipment and medium for radio frequency module | |
| CN113395122B (en) | Production test circuit board, radio frequency parameter calibration system, method and computer equipment | |
| CN103728502B (en) | The method and system and wireless terminal of a kind of antenna measurement | |
| CN111277346A (en) | Wifi double-frequency and triple-frequency interference evaluation test system and method thereof | |
| CN109890046B (en) | Method and system for testing power loss of clamp of wireless communication equipment | |
| CN112816787A (en) | Line loss point inspection system and method | |
| CN210075247U (en) | Power calibration device of radio frequency equipment | |
| CN105681127A (en) | Complete multi-port vector network measurement device and method for multi-port radio frequency element | |
| US20170234959A1 (en) | Calibration apparatus and method for network analyzer | |
| CN108900261A (en) | A kind of 1800M RF consistency reception intermodulation testing method and device | |
| CN107483122B (en) | Power test system, power compensation method and device | |
| CN114050877B (en) | Antenna system and antenna system testing method | |
| CN112737706B (en) | Test fixture radio frequency calibration system and method | |
| CN209545600U (en) | Wireless communication module fixture line loss test macro | |
| CN110579648A (en) | antenna gain judging method and judging device | |
| CN110391854A (en) | The power calibrating method and device of wireless radios |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |