CN211702045U - Wireless module radio frequency performance test fixture and test system - Google Patents
Wireless module radio frequency performance test fixture and test system Download PDFInfo
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- CN211702045U CN211702045U CN202020438613.4U CN202020438613U CN211702045U CN 211702045 U CN211702045 U CN 211702045U CN 202020438613 U CN202020438613 U CN 202020438613U CN 211702045 U CN211702045 U CN 211702045U
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Abstract
The utility model discloses a wireless module radio frequency performance test fixture and test system, test system include signal attenuator, be used for the test to await measuring the test motherboard of wireless module radio frequency performance and wireless module radio frequency performance test fixture, the test motherboard switches on with the signal attenuator electrical property, the signal attenuator pass through the radio frequency coaxial cable with the thimble subassembly electrical property switches on. The test system is overall simpler, low in input cost, suitable for radio frequency performance test of wireless modules with small batch and more product models, and capable of meeting the requirement of actual wireless module production test precision.
Description
Technical Field
The utility model relates to an automatic test technical field especially relates to a wireless module radio frequency capability test tool and test system.
Background
Nowadays, human science and technology are rapidly developed every day, and automatic production and test technology is effectively advanced, so that automation of production and test processes of products is realized in many fields. However, as more and more products such as smart homes, wearable devices, medical devices and the like emerge in the market, a large number of electronic components such as control chips, wireless chips, sensors and the like are integrated in the products, so that the traditional automatic production testing technology is not adapted to the production and testing of emerging intelligent devices slowly.
In the production process of the wireless module, in order to ensure the production quality and consistency of the wireless module, the transmission power, the central frequency point and the receiving sensitivity of the wireless module are often required to be tested, and then whether the radio frequency performance of the wireless module can meet the performance requirements of product application is judged through the test result.
The radio module radio frequency performance test method applied to the production field mainly comprises the following two methods, wherein the first method is to test three radio frequency indexes of transmitting power, a central frequency point and receiving sensitivity by using an integrated tester. And the second method is to use a test fixture to test the three radio frequency indexes of the transmitting power, the central frequency point and the receiving sensitivity by comparing with the signal value of the sample standard plate.
The two testing methods have advantages and disadvantages, the first testing method uses an instrument to test the radio frequency parameters of the wireless module reliably, and is convenient for detecting products of the same model, and the defects are that the automatic testing period of the instrument is long, the equipment investment is large, and the automatic testing method is not suitable for small-batch production lines with more product models. The second kind uses the mode that test fixture adopted the signal value contrast, development and input cost are low, can respond the change of product fast, and the shortcoming can't test the skew of discerning the central frequency point and comparatively rely on the radio frequency index degree of accuracy of sample standard plate in certain extent, easily appears testing inaccurate problem, after long-time test is used, need carry out the change of sample standard plate in order to guarantee its test degree of accuracy, and the possibility that this mode goes wrong is great, and maintenance and human cost are higher.
SUMMERY OF THE UTILITY MODEL
The utility model discloses the technical problem that will solve is: the utility model provides a wireless module radio frequency performance test tool and test system that efficiency of software testing is high and the degree of accuracy is good.
In order to solve the technical problem, the utility model discloses a technical scheme be:
the utility model provides a wireless module radio frequency performance test fixture, includes the tool main part, still includes thimble subassembly, is used for placing the test platform of the wireless module of awaiting measuring and is used for compressing tightly the subassembly that compresses tightly of the wireless module of awaiting measuring, the thimble subassembly set up in test platform's below, and thimble subassembly with the wireless module electrical property of awaiting measuring switches on, test platform set up in the tool main part.
The utility model discloses another technical scheme do:
a wireless module radio frequency performance test system comprises a signal attenuator, a test motherboard used for testing the radio frequency performance of a wireless module to be tested and a wireless module radio frequency performance test fixture, wherein the test motherboard is electrically conducted with the signal attenuator, and the signal attenuator is electrically conducted with an ejector pin assembly through a radio frequency coaxial cable.
The beneficial effects of the utility model reside in that:
1. the test fixture has a simple structure, the wireless module to be tested is convenient to install, and the stability after installation is good;
2. the test system is simple in whole, low in investment cost and suitable for radio frequency performance test of wireless modules with small batch and more product models; the connection mode of the signal attenuator and the radio frequency coaxial cable is adopted, so that the test precision can be improved;
3. the utility model discloses a test system can accomplish transmit power, central frequency point and sensitivity of receipt comparatively accurately in short time automatically, and efficiency of software testing is high, can reduce the input in the aspect of manpower and equipment greatly.
Drawings
Fig. 1 is a schematic structural diagram of a radio module radio frequency performance testing system according to a first embodiment of the present invention;
fig. 2 is a schematic structural view of a radio module radio frequency performance testing jig according to a first embodiment of the present invention;
fig. 3 is a schematic view of a partial structure of a radio module rf performance testing system according to a first embodiment of the present invention;
fig. 4 is a schematic structural diagram of another part of a radio module radio frequency performance testing system according to a first embodiment of the present invention;
fig. 5 is a flowchart of a method for testing radio frequency performance of a wireless module according to a second embodiment of the present invention;
fig. 6 is a schematic diagram of a transmission waveform in the method for testing radio frequency performance of a wireless module according to the second embodiment of the present invention.
Description of reference numerals:
100. a wireless module to be tested;
1. a jig main body; 2. a thimble assembly; 3. a test platform; 4. a compression assembly; 41. a support; 42. briquetting; 43. a compression bar assembly;
5. a signal attenuator; 6. testing the motherboard; 61. a radio frequency chip; 62. MCU; 63. a connecting wire interface; 64. a radio frequency antenna interface; 7. a radio frequency coaxial cable; 8. an adapter plate; 9. a shield case; 10. a switch; 11. an LED indicator light; 12. and (4) a power supply.
Detailed Description
In order to explain the technical content, the objects and the effects of the present invention in detail, the following description is made with reference to the accompanying drawings in combination with the embodiments.
The utility model discloses the most crucial design lies in: the test motherboard sequentially passes through the signal attenuator, the radio frequency coaxial cable and the thimble assembly to be electrically connected with the wireless module to be tested, so that the transmitting power, the central frequency point and the receiving sensitivity of the wireless module can be automatically tested, and the test efficiency is high.
Referring to fig. 2, a radio module radio frequency performance testing jig includes a jig main body 1, and further includes a thimble assembly 2, a testing platform 3 for placing a radio module 100 to be tested, and a compressing assembly 4 for compressing the radio module 100 to be tested, the thimble assembly 2 is disposed below the testing platform 3, the thimble assembly 2 is electrically connected to the radio module 100 to be tested, and the testing platform 3 is disposed on the jig main body 1.
From the above description, the beneficial effects of the present invention are: the test fixture is simple in structure, the wireless module to be tested is convenient to install, and the stability after installation is good.
Further, the pressing component 4 includes a support 41, a pressing block 42 and a pressing rod component 43, the support 41 is fixedly disposed on the jig main body 1, the pressing rod component 43 is respectively and fixedly connected with the support 41 and the pressing block 42, and the pressing block 42 is located above the testing platform 3.
According to the above description, the wireless module to be tested can be pressed through the pressing block.
Further, the testing platform 3 is slidably disposed relative to the fixture body 1.
As can be seen from the above description, the position of the test platform can be adjusted as desired.
Referring to fig. 1, another technical solution related to the present invention is:
a wireless module radio frequency performance test system comprises a signal attenuator 5, a test motherboard 6 and a wireless module radio frequency performance test fixture, wherein the test motherboard 6 is used for testing the radio frequency performance of a wireless module 100 to be tested, the test motherboard 6 is electrically conducted with the signal attenuator 5, and the signal attenuator 5 is electrically conducted with an ejector pin assembly 2 through a radio frequency coaxial cable 7.
The above description shows that the test system is overall simpler, has low investment cost, and is suitable for the radio frequency performance test of wireless modules with small batch and more product models; the connection mode of the signal attenuator and the radio frequency coaxial cable is adopted, so that the test precision can be improved.
Further, the test device further comprises an adapter plate 8, wherein the adapter plate 8 is respectively connected with the ejector pin assembly 2, the test motherboard 6 and the radio frequency coaxial cable 7.
As can be seen from the above description, management of the individual connection lines is facilitated by the patch panel.
Further, still include shielding box 9, be equipped with on the tool main part 1 and hold the chamber, shielding box 9 and keysets 8 set up respectively in hold the intracavity, test motherboard 6 and signal attenuator 5 with all set up in the shielding box 9.
According to the description, the shielding box can reduce the radio frequency interference of the radio frequency signals in the air to the test motherboard, so as to ensure the accuracy and the effectiveness of the test data; the shielding box and the adapter plate are arranged in the accommodating cavity of the jig main body, so that management is facilitated.
Further, the LED lamp adapter further comprises a switch 10 and an LED indicator light 11, wherein the switch 10 and the LED indicator light 11 are respectively connected with the adapter plate 8.
As can be seen from the above description, the switch is arranged to facilitate the power-on, and the LED indicator light can indicate the detection result.
Further, the test device also comprises a power supply 12, and the power supply 12 is connected with the test motherboard 6.
Further, the test motherboard 6 includes a radio frequency chip 61 and an MCU 62, and the radio frequency chip 61 and the MCU 62 are connected to the interposer 8, respectively.
Example one
Referring to fig. 1 to 4, a first embodiment of the present invention is:
a radio module radio frequency performance test system, as shown in FIG. 1, includes a signal attenuator 5, an adapter board 8, a test motherboard 6 for testing the radio frequency performance of a radio module 100 to be tested, and a radio module radio frequency performance test fixture. The wireless module to be tested 100 is an embedded module with micropower capable of performing multi-channel wireless data transmission over the air. The signal attenuator 5 is used to attenuate the transmitted rf signal strength and to attenuate the received rf signal strength.
As shown in fig. 2, the wireless module radio frequency performance testing jig includes a jig main body 1, and further includes an ejector pin assembly 2, a testing platform 3 for placing a wireless module 100 to be tested, and a compressing assembly 4 for compressing the wireless module 100 to be tested, the ejector pin assembly 2 is disposed below the testing platform 3, the ejector pin assembly 2 is electrically connected to the wireless module 100 to be tested, the testing platform 3 is disposed on the jig main body 1, and preferably, the testing platform 3 is slidably disposed relative to the jig main body 1. The pressing component 4 comprises a support 41, a pressing block 42 and a pressing rod component 43, the support 41 is fixedly arranged on the jig main body 1, the pressing rod component 43 is fixedly connected with the support 41 and the pressing block 42 respectively, the pressing block 42 is located above the testing platform 3, and the pressing block 42 can be driven to move by pulling the pressing component 4 so as to press the wireless module 100 to be tested.
The test motherboard 6 is electrically conducted with the signal attenuator 5, and the signal attenuator 5 is electrically conducted with the thimble assembly 2 through a radio frequency coaxial cable 7. In this embodiment, the test system further includes an adapter plate 8, where the adapter plate 8 is connected to the thimble assembly 2, the test motherboard 6, and the radio frequency coaxial cable 7, that is, the adapter plate 8 is disposed between the radio frequency coaxial cable 7 and the thimble assembly 2, and the test motherboard 6 is further electrically connected to the adapter plate 8 through a connection line. As shown in fig. 3, the adapter plate 8 is connected to the thimble assembly 2 by seven copper wires, which are respectively a power line, a ground line, a serial TX line, a serial RX line and three control lines, one end of the seven copper wires is a 7pin connecting base connected to the adapter plate 8, and the other end of the seven copper wires is welded to the thimble assembly 2.
The test system further comprises a shielding box 9, a containing cavity is formed in the jig main body 1, the shielding box 9 and the adapter plate 8 are respectively arranged in the containing cavity, and the test motherboard 6 and the signal attenuator 5 are both arranged in the shielding box 9.
The test system further comprises a switch 10, an LED indicator light 11 and a power supply 12, wherein the switch 10 and the LED indicator light 11 are respectively connected with the adapter plate 8, and the power supply 12 is connected with the test motherboard 6. The switch 10 can control the whole testing system to be turned on and off, and the LED indicator light 11 can display the testing result. The power supply 12 can be a direct current stabilized voltage power supply adapter with 5V output voltage and 1.5A output current, and the power supply 12 and the test motherboard 6 can be connected by adopting a double male USB line.
As shown in fig. 4, the test motherboard 6 includes a radio frequency chip 61 and an MCU 62, and the radio frequency chip 61 and the MCU 62 are respectively connected to the interposer 8. The MCU 62 is commercially available from Renesas corporation under the model number R7F0C901, and the test motherboard 6 is further provided with a connection line interface 63 under the model number DB25, and is electrically connected to the interposer 8 through the connection line interface 63. The RF chip 61 is commercially available from Silicon Laboratories, Inc. under the type Si 4463. The test motherboard 6 is further provided with a radio frequency antenna interface 64, the radio frequency antenna interface 64 can be purchased from aepolid electronics limited company, Shenzhen, the model of which is an SMA radio frequency coaxial connector, and the relevant parameters are as follows: five positive pins, 50 omega impedance, DC-12GHz and standing-wave ratio less than or equal to 1.
Example two
Referring to fig. 1, 5 and 6, a second embodiment of the present invention is:
the method for testing the radio frequency performance of the wireless module is completed based on the system for testing the radio frequency performance of the wireless module in the first embodiment, and comprises the following steps:
s1, the test motherboard 6 sends a transmission instruction to the wireless module to be tested 100.
Before testing, the wireless module 100 to be tested is placed on the testing platform 3, then the pressing rod assembly 43 is pulled to press the pressing block 42 to press the wireless module 100 to be tested, after the pressing block is pressed, the wireless module 100 to be tested is conducted with the thimble assembly 2, and after the wireless module 100 to be tested is normally powered on, the indicator lamp on the wireless module to be tested is kept normally on. After the wireless module to be tested 100 is powered on, the switch 10 is turned on, at this time, the test motherboard 6 sends a transmission instruction to the wireless module to be tested 100, the wireless module to be tested 100 is set to be in a transmission test mode, and the wireless module to be tested 100 sends feedback information of successful setting to the test motherboard 6 after being successfully set to be in the transmission test mode.
S2, the test motherboard 6 collects the frequency point of the radio frequency signal sent by the wireless module to be tested 100 and the corresponding first RSSI value, and calculates the transmitting power and the central frequency point of the wireless module to be tested 100 according to the frequency point and the first RSSI value.
As shown in FIG. 6, the wireless module to be tested 100 uses a predetermined center frequency FCSends radio frequency signals to the test motherboard 6 as a center, and the test motherboard 6 has a certain frequency point interval F in a certain receiving frequency bandSCorresponding first RSSI value detection is carried out, and the range of the receiving frequency band is [ FD,FU]，FSShould be much smaller than FD-FUAnd the frequency point F of the maximum first RSSI value testedMIs closest to the actual central frequency point F of the wireless module 100 to be testedrThe frequency point of (c). Determination of the reception frequency band and radio to be testedThe module 100 determines that the central frequency point is related to the crystal used, if the crystal deviation range is larger, the receiving frequency band needs to be larger, and a certain margin needs to be left, so that the receiving frequency band range is larger than the crystal deviation range of the wireless module 100 to be tested, and the frequency point interval F is largerSDetermining and testing the digital demodulation bandwidth B of the motherboard 6 radio frequency schemeMRelated, frequency point spacing FSShould be smaller than the digital demodulation bandwidth B of the test motherboard 6 radio frequency schemeMAnd testing the digital demodulation bandwidth B of the motherboard 6MShould be less than the transmission occupied bandwidth B of the wireless module 100 to be testedT。
In this embodiment, the signal attenuator 5 is used to attenuate the rf signal strength. Through practice verification, the range of the first RSSI value of the radio frequency signal tested by the test motherboard 6 is [ R ]D,RU]Within the range, the linearity of the first RSSI value test is better, wherein RDAnd RUIs determined by the rf scheme of the test motherboard 6. The wireless module to be tested 100 uses the maximum transmission power T in the transmission test modeP(dBm) is transmitted due to the typical maximum transmit power TPRatio RUTherefore, it is necessary to add a signal attenuator 5 at the rf antenna end of the test motherboard 6, and T is known according to the rf scheme of the wireless module 100 to be testedPIn a defined linear attenuation interval [ R ]D,RU]And maximum transmission power TPThen, the type selection of the signal attenuator 5 is further determined so that the first RSSI value of the rf signal inputted to the test motherboard 6 is within a range of good linearity for its test RD,RU]Therefore, the test of the transmitting power is more accurate.
Considering the accuracy of the first RSSI value test on the test motherboard 6, in this embodiment, the first RSSI value of the radio frequency signal is continuously acquired N times, the measurement result of the previous M times is removed, and the average value of the remaining N-M times of the first RSSI values is calculated, so as to further eliminate the problem of inaccurate test due to accidental test fluctuation, and improve the stability of the test, where the size of N is determined by the radio frequency scheme and the test duration of the test motherboard 6, the larger the test fluctuation error of the first RSSI value of the radio frequency scheme of the test motherboard 6 is, the larger N needs to be, the larger N also needs to be due to the limitation of the test duration, and the calculation method of M is generally one third of the N value or two thirds of the N value.
And sequencing the average values of the first RSSI values of all the frequency points from small to large, wherein the maximum average value of the first RSSI values is treated by a compensation algorithm to be used as the transmitting power of the wireless module to be tested 100, and the corresponding frequency point is used as the central frequency point of the wireless module to be tested 100. The compensation algorithm specifically comprises the following steps: t isp＝RSSITX-MAX+MAtte+MLL+MTX-DeltaWherein the RSSITX-MAXRepresents the maximum average value of the first RSSI values, MAtteDenotes the size of the signal attenuator 5, MLLRepresents the radio frequency line loss value, MTX-DeltaAnd the test error of the transmitting power is shown, and the value is an empirical value obtained after a plurality of test experiments.
And S3, when the transmitting power and the central frequency point are both qualified, the test motherboard 6 sends a receiving instruction to the wireless module 100 to be tested.
In this embodiment, when the transmission power and the center frequency point are not within the preset threshold range, the LED indicator 11 is displayed in red, and the test is ended. The reception sensitivity test is continued only when it is within a preset threshold range. During testing, the test motherboard 6 sends a receiving instruction to the wireless module to be tested 100, the wireless module to be tested 100 sets a receiving test mode after receiving the receiving instruction, and the wireless module to be tested 100 successfully sets the receiving test mode and sends feedback information to the test motherboard 6.
S4, the test motherboard 6 sends radio frequency signals to the wireless module to be tested 100.
The test motherboard 6 sends n bytes of radio frequency signals with the predetermined preamble to the wireless module 100 to be tested, wherein the size of n should be larger than the length of the predetermined preamble and as small as possible, so as to save the test time brought by wireless transceiving interaction.
S5, the test motherboard 6 receives a second RSSI value corresponding to the radio frequency signal detected by the wireless module to be tested 100, and the receiving sensitivity of the wireless module to be tested 100 is calculated according to the second RSSI value.
After receiving the complete predetermined preamble, the wireless module to be tested 100 sends the second RSSI value tested by the wireless module to be tested to the test motherboard 6 through the serial port, and the second RSSI value tested is processed by the compensation algorithm and then used as the receiving sensitivity of the wireless module to be tested 100, so that the receiving sensitivity of the wireless module to be tested 100 is tested. The compensation algorithm specifically comprises the following steps: rs＝Tstand-RSSIRX+MRX-Delta，TstandThe RSSI value is the calibration value of the receiving sensitivity of the wireless module 100 to be testedRXRepresents a second RSSI value, Tstand＝RSSIstand+Rstand，RSSIstandIs a return RSSI value, R, obtained when a standard wireless module is placed on a jig for testingstandInstrumental test value for its reception sensitivity, MRX-DeltaAnd the error between the receiving sensitivity test value and the instrument measurement value is represented, and the value is an empirical value obtained after a plurality of test experiments.
In order to more quickly receive the second RSSI value sent back by the wireless module to be tested 100, the data sent by the test motherboard 6 can also be set as the predetermined preamble. That is, the test motherboard 6 sends n-byte preamble data with a predetermined preamble, the wireless module to be tested 100 immediately sends a second RSSI value tested by the wireless module to be tested to the test motherboard 6 through the serial port after receiving the radio frequency signal, and the second RSSI value is used as the receiving sensitivity of the wireless module to be tested 100 after being processed by the compensation algorithm. And judging whether the receiving sensitivity of the wireless module 100 to be tested is within a qualified range, if not, displaying red color by the LED indicator lamp 11 and finishing the test, and if the receiving sensitivity is qualified, displaying green color by the indicator lamp. In this embodiment, only when the transmission power and the center frequency point measured based on the first RSSI value in the transmission test mode and the reception sensitivity measured based on the second RSSI value in the reception test mode are within a suitable range, the LED indicator light 11 that prompts that the test is passed is displayed in green, and the test indicator light is displayed in red in other cases.
In this embodiment, the test motherboard 6 is further provided with a data export interface, and the data export interface is in signal connection with an external device and can be used for outputting complete test data. The LED indicator light 11 is only used for indicating whether the performance of a test product meets the standard or not, the test efficiency can be improved, and the data export interface can completely export the data generated in the whole test process and can be used for later analysis and storage.
A common method for testing the receiving sensitivity in general production is packet error rate testing, which has three problems: the first problem is that different synchronous words cannot be tested, the packet error rate test needs to be carried out by both sides for communication, so that the synchronous words of both sides are ensured to be the same, but when the same wireless module is used in common, the synchronous words are different, so that the problem that the test cannot be carried out is caused, and because the RSSI value is adopted in the implementation method for representing the receiving sensitivity, the problem that different synchronous words cannot be tested is solved without being influenced by different synchronous words; the second problem is that the requirement on the equipment precision of the signal attenuator 5 is high, so that the cost is high, the signal attenuator 5 needs to attenuate signals to the critical qualified position of the receiving sensitivity of the wireless module, the receiving sensitivity of the conventional wireless chip is above-100 dBm, if the adjustable signal attenuator 5 or a single signal attenuator 5 is used, the equipment cost is too high, and if a plurality of signal attenuators 5 are used for combination, the problem that the signal attenuation value is inaccurate is caused; the third problem is that the test period consumed by using the packet error rate for testing is long, and the time consumption of the method is far longer than that of a mode of acquiring the RSSI value because the packet error rate test needs to carry out interactive test of a plurality of packets of data frames to determine the receiving sensitivity of the wireless module, thereby influencing the productivity of actual production. Therefore, the method for testing the receiving sensitivity in the embodiment solves the problems that the test cannot be carried out due to different synchronous words, the requirement on the precision of the equipment is high, and the test consumes long time, reduces the input of manpower and equipment cost, and improves the production capacity.
Table 1 shows data obtained by the test method of this example compared with data obtained by the test of the existing test instrument. The model of the existing testing instrument for the central frequency point and the transmitting power is FieldFox Microwave Analyzer-N9915A, the model of the existing testing instrument for the receiving sensitivity is ESG Vertor Signal Generator-E4438C, and the two testing instruments can be purchased from KeySight company.
TABLE 1 comparison of test data
It can be known from the above table that the difference between the central frequency point, the transmitting power and the receiving sensitivity obtained by the test of the embodiment and the data obtained by the test of the existing test instrument is not large, and the requirement of the actual production test precision of the wireless module is met.
To sum up, the utility model provides a wireless module radio frequency capability test tool and test system, test system is whole comparatively succinct, and the input cost is low, is applicable to the radio frequency capability test of the more wireless module of small batch volume, product model, and can satisfy actual wireless module production test accuracy requirement.
The above mentioned is only the embodiment of the present invention, and not the limitation of the patent scope of the present invention, all the equivalent transformations made by the contents of the specification and the drawings, or the direct or indirect application in the related technical field, are included in the patent protection scope of the present invention.
Claims (9)
1. The utility model provides a wireless module radio frequency performance test fixture, includes the tool main part, its characterized in that still includes thimble subassembly, is used for placing the test platform of the wireless module of awaiting measuring and is used for compressing tightly the subassembly that compresses tightly of the wireless module of awaiting measuring, the thimble subassembly set up in the below of test platform, and thimble subassembly with the wireless module electrical property of awaiting measuring switches on, test platform set up in the tool main part.
2. The wireless module radio frequency performance test fixture of claim 1, wherein the compressing assembly comprises a bracket, a pressing block and a pressing rod assembly, the bracket is fixedly arranged on the fixture main body, the pressing rod assembly is respectively and fixedly connected with the bracket and the pressing block, and the pressing block is located above the test platform.
3. The wireless module radio frequency performance testing fixture of claim 1, wherein the testing platform is slidably disposed relative to the fixture body.
4. A wireless module radio frequency performance test system is characterized by comprising a signal attenuator, a test motherboard for testing the radio frequency performance of a wireless module to be tested and the wireless module radio frequency performance test fixture of any one of claims 1 to 3, wherein the test motherboard is electrically conducted with the signal attenuator, and the signal attenuator is electrically conducted with the ejector pin assembly through a radio frequency coaxial cable.
5. The system of claim 4, further comprising an adapter plate, wherein the adapter plate is connected to the pin assembly, the test motherboard, and the RF coaxial cable, respectively.
6. The system for testing the radio module radio frequency performance of claim 5, further comprising a shielding box, wherein the jig main body is provided with a containing cavity, the shielding box and the adapter plate are respectively arranged in the containing cavity, and the test motherboard and the signal attenuator are both arranged in the shielding box.
7. The wireless module radio frequency performance testing system of claim 5, further comprising a switch and an LED indicator light, wherein the switch and the LED indicator light are connected to the adapter plate respectively.
8. The system for testing radio frequency performance of wireless module as claimed in claim 4, further comprising a power supply, wherein said power supply is connected to said test motherboard.
9. The system for testing radio frequency performance of a wireless module according to claim 5, wherein the test motherboard comprises a radio frequency chip and an MCU, and the radio frequency chip and the MCU are respectively connected with the interposer.
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Address after: A801, building 1, Shenzhen software industry base, No. 81, 83 and 85, South 10th Road, Gaoxin, Binhai community, Yuehai street, Nanshan District, Shenzhen, Guangdong 518000 Patentee after: Shenzhen Huilian Softcom Technology Co.,Ltd. Address before: 518000 room 1211, 12 / F, Weixing building, 2002 Keyuan Road, Yuehai street, Nanshan District, Shenzhen City, Guangdong Province Patentee before: SHENZHEN WITLINK Co.,Ltd. |