TWM647717U - Selective receiver testing device - Google Patents

Abstract

A selective receiver testing device is provided in a box, and the surface of the box is provided with a power monitoring endpoint monitor, a wireless access transmitter endpoint and a test computer connection endpoint control radio frequency power analyzer, a The interference signal input endpoint uses a radio frequency signal generator to generate a channel above or below the main frequency of the object under test and a Wi-Fi 6E wireless receiver of the object under test. Test the configuration and analyze the performance under various channel occupancies to achieve a single The device completes the Wi-Fi 6E wireless receiver performance test.

Description

Selective Receiver Test Setup

This creation is related to the field of performance testing of Wi-Fi 6E radio frequency devices, simulating various channels to evaluate the performance of the interference of the Wi-Fi 6E test device around the main frequency channel.

The advancement of science and technology and the development of technology have led us to break through the shackles of wires and brought us into an increasingly colorful and convenient wireless world. The convenience of wireless is increasingly evident in work and life. The ubiquitous wireless communication technology and numerous types of wireless communication equipment have brought great convenience to our lives and work.

Wi-Fi technology that is often used in today's life. With technological breakthroughs and relaxation of regulations, the current generation of Wi-Fi 6E has arrived. Compared with previous generations, Wi-Fi 6E not only uses higher frequencies, but also has more Due to the large bandwidth transmission speed, peripheral communication equipment that currently supports Wi-Fi 6E is also booming.

However, to determine whether a communication device using Wi-Fi 6E complies with regulatory specifications or meets anti-interference communications, it usually needs to go through the next three stages. The Wi-Fi 6E radio frequency device performance evaluation will first determine the connection quality (the device under test). When connecting to the wireless access point transmitter and communicating, adjust the minimum power of the DUT after adjusting the packet error rate to no more than 10%. Secondly, use the signal generator to adjust the upper and lower channels of the main frequency used. Strength correction and thirdly, adding interference signals to the normal connection for actual testing.

However, currently, the above three stages need to be completed by three different independent devices. Therefore, when the laboratory or relevant industry conducts actual testing, the three independent devices need to be operated separately. Settings must be made while the object under test, signal analyzer, wireless access point transmitter and other related equipment must be moved at the same time, resulting in time consumption and low work efficiency.

Therefore, how to develop a system to effectively and quickly verify that wireless equipment complies with the requirements of these specifications is the current research and development direction of the industry.

In order to improve the above problems, this invention provides a single device to complete the Wi-Fi 6E selective receiver test device.

In order to achieve the above purpose, the present invention provides a selective receiver test device, which is installed in a box, and the surface of the box is provided with an endpoint of the object under test, an interference signal input endpoint, and a power monitoring endpoint. A wireless access transmitter endpoint and a test computer connection endpoint, which includes: a directional coupler having a first end, a second end and a third end, the first end and a radio frequency signal separation component Electrically connected, the second end is electrically connected to an attenuator, and the third end is electrically connected to the end point of the object under test; a first power divider has a first end, a second end and a A third end, the first end is electrically connected to the radio frequency signal separation component, the second end is electrically connected to a programmable attenuator, the third end is electrically connected to the interference signal input terminal; a second end A power divider has a first end, a second end and a third end, and the third end is electrically connected to the power monitoring terminal; a directional coupler has a first end, a second end and A third end, the first end is electrically connected to the programmable attenuator, the second end of the directional coupler is electrically connected to the second end of the second power divider, the third end is electrically connected to the wireless Access transmitter terminals are electrically connected; a first radio frequency power detector has a first end, a second end and a third end, the first end is electrically connected to the attenuator; a second radio frequency The power detector has a first end, a second end and a third end, and the second end of the second radio frequency power detector is electrically connected to the first end of the second power divider; a voltage data capture The taker has a first end, a second end and a third end and a fourth terminal, the first terminal of the voltage data acquisition device is electrically connected to the second terminal of the first RF power detector, and the second terminal of the voltage data acquisition device is electrically connected to the second RF power detector. The first end of the hub is electrically connected; the hub has a first end, a second end, a third end and a fourth end, the first end is electrically connected to the programmable attenuator, and the second end of the hub The terminal is electrically connected to the third terminal of the voltage data acquisition device, and the third terminal is electrically connected to the test computer connection terminal; and a power supply device, the third terminal of the first radio frequency power detector, the The third terminal of the second radio frequency power detector, the fourth terminal of the voltage data acquisition device and the fourth terminal of the hub are electrically connected to the power supply.

With the above structure, the current Wi-Fi 6E radio frequency device evaluates the communication connection and uses a programmable attenuator to adjust the packet error rate to no more than 10% during the communication process. The minimum power of the DUT connection The equipment required for the three test steps, including interference signal strength correction and actual testing, is integrated into a single test device. When performing different test steps, you only need to simply replace each external object or device to complete the Wi-Fi 6E regulations with a single device. The efficacy of the test.

The invention has been described in detail above. However, the above description is only one of the preferred embodiments of the invention and cannot limit the scope of implementation of the invention. That is to say, all equal changes and modifications made based on the application scope of this creation should still be covered by the patent of this creation.

1:Selective Receiver Test Setup

1A: Endpoint of the object under test

1B: Interference signal input terminal

1C: Power monitoring endpoint

1D: Wireless access transmitter endpoint

1E: Test computer connection endpoint

101: Directional coupler

102:RF signal separation component

1021: The first RF circulator

1022: Second RF circulator

1023:Attenuator

103:Attenuator

104:First power divider

105: Programmable attenuator

106: Second power divider

107: Directional coupler

108: The first RF power detector

109: Second RF power detector

110:Voltage data retriever

111:hub

112:Power supply

113:Adapter

2: Test the computer

3: Object to be tested

4:Wireless access transmitter

5: Signal analyzer

6: Vector signal generator

7: Impedance matching device

Figure 1 is the structural block diagram of the selective receiver test device of this creation; Figure 2 is the minimum connection of the device under test with a packet error rate of no more than 10% in the evaluation connection communication of the Wi-Fi 6E radio frequency device of this creation. A schematic diagram of the configuration of connecting to external equipment when powering; Figure 3 is a schematic diagram of the configuration of the test device simulating the upper and lower channels of the object under test in communication to perform interference signal strength correction and connecting to external equipment; Figure 4 is a schematic diagram of the configuration of the connection between this creative test device and external equipment during the actual test of Wi-Fi 6E receiver channel selection performance evaluation.

The above-mentioned purpose of this invention and its structural and functional characteristics will be explained based on the preferred embodiments of the attached drawings.

Please refer to Figure 1, which is a structural block diagram of the selective receiver test device of this invention. The selective receiver test device 1 of this invention is mainly installed in a box (not shown) or a frame that can accommodate the following components. , in this embodiment, a box is used for illustration, but it is not limited to this. The outer surface of the box is provided with an object under test endpoint 1A, an interference signal input endpoint 1B, a power monitoring endpoint 1C, and a There is a wireless access transmitter endpoint 1D and a test computer connection endpoint 1E. Each of the above test endpoints can be freely selected to be placed anywhere in the cabinet, for example, on the same side or on different sides, and can be arbitrarily deployed according to usage requirements.

The following will provide a detailed description of each component that constitutes the test device of this invention, and describe the relative connection relationship.

A directional coupler 101 has a first end, a second end and a third end. The first end is electrically connected to a radio frequency signal separation component 102, and the second end is electrically connected to an attenuator 103. The third end is electrically connected to the end point 1A of the object under test. The above-mentioned radio frequency signal separation component 102 has a first radio frequency circulator 1021, a second radio frequency circulator 1022 and a complex attenuator 1023. The first and second radio frequency Circulators 1021 and 1022 are disposed at both ends. The attenuators 1023 are disposed side by side and both ends are electrically connected to the first and second radio frequency circulators 1021 and 1022 respectively.

A first power divider 104 has a first end, a second end and a third end, the first end is electrically connected to the radio frequency signal separation component 102, and the second end is connected to a programmable attenuator 105 Electrically connected, the third terminal is electrically connected to the interference signal input terminal 1B.

A second power divider 106 has a first end, a second end and a third end, and the third end is electrically connected to the power monitoring terminal 1C.

A directional coupler 107 has a first end, a second end and a third end. The first end is electrically connected to the programmable attenuator 105. The second end of the directional coupler 107 is connected to the third end. The second terminals of the two power dividers 106 are electrically connected, and the third terminal is electrically connected to the wireless access transmitter terminal 1D.

A first radio frequency power detector 108 has a first end, a second end and a third end, and the first end is electrically connected to the attenuator 103 .

A second radio frequency power detector 109 has a first terminal, a second terminal and a third terminal. The second terminal of the second radio frequency power detector 109 is electrically connected to the first terminal of the second power divider 106. sexual connection.

A voltage data acquisition device 110 has a first terminal, a second terminal, a third terminal and a fourth terminal. The first terminal of the voltage data acquisition device 110 and the third terminal of the first radio frequency power detector 108 The two terminals are electrically connected, and the second terminal of the voltage data acquisition device 110 is electrically connected to the first terminal of the second radio frequency power detector 109 .

The hub 111 has a first end, a second end, a third end and a fourth end. The first end is electrically connected to the programmable attenuator 105. The second end of the hub 111 is connected to the voltage data. The third terminal of the capture device 110 is electrically connected to the test computer connection terminal 1E.

A power supply 112, the third terminal of the first RF power detector 108, the third terminal of the second RF power detector 109, the fourth terminal of the voltage data acquisition device 110 and the fourth terminal of the hub 111 The terminal is electrically connected to the power supply.

An adapter 113 is disposed between the voltage data acquirer 110 and the first radio frequency power detector 108 and the second radio frequency power detector 109.

Please refer to Figure 2, which is a schematic diagram of the configuration of connecting the Wi-Fi 6E radio frequency device to an external device when the minimum power of the DUT connection is used to evaluate the packet error rate in the connection communication. At the same time, it is supplemented by Referring to Figure 1, in this embodiment, the test computer connection endpoint 1E is electrically connected to a test computer 2, the DUT endpoint 1A is connected to an DUT 3, and the wireless access transmitter endpoint 1D is connected to a wireless access transmitter 4, and the interference signal input terminal 1B and the power monitoring terminal 1C are respectively connected to an impedance matching device 7.

In this step 1, the purpose is to find the minimum power of the connection that meets the packet error rate of less than 10%, put the object under test 3 and the wireless access transmitter 4 in the normal communication mode and select the channel to use Wi-Fi 6E , and adjust the programmable attenuator 105 to control the RF power output power and use the test computer to record the power when the packet error rate reaches no more than 10%. In this process, the wireless access transmitter can be controlled through the packet control program in the test computer 2 4. Send the information containing the original packet, and let the object under test 3 respond to the information containing the original packet to generate a parsed packet information. Then the object under test 3 will transmit the parsed packet information back to the test computer 2. The test computer 2 Then the information containing the original packet and the information of the parsed packet are compared to determine the correct number of packets in the two pieces of information.

In more detail, first set the attenuation parameter of the programmable attenuator 105 at 0dB, connect the signal analyzer 5 to the endpoint 1A of the object under test to confirm the actual output power and record it, and then connect the endpoint 1A of the object under test. The test object 3 begins to control the programmable attenuator 105 to gradually increase the attenuation parameter (gradually increasing from 1dB). After separating the RF transmitting signal and the RF receiving signal through the RF signal separation component 102, the test computer 2 reads the voltage data acquisition device 110 for analysis. For the error rate of the packet data, continuously adjust the programmable attenuator 105 and control it to be closest to 10% of the packet error rate and not exceed it, and calculate the actual output power (the power measured at 0dB plus the adjusted programmable attenuator 105 value is the actual output).

Please refer to Figure 3, which is a schematic configuration diagram of the creative test device simulating the upper and lower channels of the device under test for interference signal strength correction and external device connection. At the same time, please refer to Figure 1. In this embodiment, It is to perform interference signal strength correction. The test computer connection endpoint 1E is electrically connected to a test computer 2. The DUT endpoint 1A is connected to a signal analyzer 5. The interference signal input endpoint 1B is connected to a vector signal generator. 6, the power monitoring endpoint 1C and the wireless access transmitter endpoint 1D are respectively connected to an impedance matching device 7.

In this step 2, the purpose is to correct the intensity of the interference signal, set the connection frequency offset to plus or minus 20/40MHz, and adjust the interference signal of the vector signal generator 6 through the memory software of the test computer 2. The software control adjusts the interference signal generated by the vector signal generator 6 to the radio frequency power value in step 1.

Please refer to Figure 4, which is a schematic diagram of the configuration of the connection with external devices during the actual test of the Wi-Fi 6E receiver channel selection performance evaluation of this creative test device. At the same time, please refer to Figure 1. In this embodiment, it is In the actual test of Wi-Fi 6E, the test computer connection endpoint 1E is electrically connected to a test computer 2, the DUT endpoint 1A is connected to an DUT 3, and the interference signal input endpoint 1B is connected to a vector signal Generator 6, the power monitoring endpoint 1C is connected to a signal analyzer 5, and the wireless access transmitter endpoint 1D is connected to a wireless access transmitter 4.

In this step, the purpose is to conduct an actual test of the object under test 3 based on the results of the above two steps, and adjust the power of the object under test 3 and the wireless access transmitter 4 to the result of step 1 plus 10dB. And the interference signal generated by the vector signal generator 6 also remains at the value adjusted in step 1. The wireless access transmitter 4 is set to the Wi-Fi 6E channel to send analog data to the object under test 3 in the normal communication mode. , the frequency setting of the interference signal is as described in step 2, offset the positive and negative DUT usage bandwidth 20/40MHz plus step 1 power plus the DUT 3 usage bandwidth 20/40 corresponding to 23/32dB, turn on the above-adjusted interference signal, and finally test computer 2 sends packets and calculates whether the current packet error rate exceeds 10% to evaluate the channel selection performance of the object under test.

To sum up, according to the structure of the present invention and related embodiments, the user only needs to follow steps 1 to 3 above to connect the object under test 3, wireless access transmitter 4, signal analyzer 5, and vector signal generator. 6 and other objects are connected to the endpoint 1A of the object under test, the interference signal input endpoint 1B, the power monitoring endpoint 1C, and the wireless access transmitter endpoint 1D according to the purpose and function, and are matched with the program in the test computer 2 and adjust the selectivity By setting the parameters of each component in the receiver test device 1, the Wi-Fi 6E channel selection performance test can be completed. This creation integrates the test steps that used to be dispersed to 3 devices into a single device and replaces the line. A single device can be connected to complete Wi-Fi 6E regulatory testing, which greatly saves the space occupied by multiple devices and the time of carrying external objects, greatly improving convenience.

The invention has been described in detail above. However, the above description is only one of the preferred embodiments of the invention and cannot limit the scope of implementation of the invention. That is to say, all equal changes and modifications made based on the application scope of this creation should still be covered by the patent of this creation.

1:Selective Receiver Test Setup

1A: Endpoint of the object under test

1B: Interference signal input terminal

1C: Power monitoring endpoint

1D: Wireless access transmitter endpoint

1E: Test computer connection endpoint

101: Directional coupler

102:RF signal separation component

1021: The first RF circulator

1022: Second RF circulator

1023:Attenuator

103:Attenuator

104:First power divider

105: Programmable attenuator

106: Second power divider

107: Directional coupler

108: The first RF power detector

109: Second RF power detector

110:Voltage data retriever

111:hub

112:Power supply

113:Adapter

Claims (7)

A selective receiver testing device is provided in a box, and the surface of the box is provided with an object under test endpoint, an interference signal input endpoint, a power monitoring endpoint, a wireless access transmitter endpoint and A test computer connection endpoint, which includes: a directional coupler with a first end, a second end and a third end, the first end is electrically connected to a radio frequency signal separation component, and the second end is An attenuator is electrically connected, and the third end is electrically connected to the end point of the object under test; a first power divider has a first end, a second end and a third end, and the first end is connected to the end point of the object under test. The radio frequency signal separation component is electrically connected, the second end is electrically connected to a programmable attenuator, the third end is electrically connected to the interference signal input terminal; a second power divider has a first end , a second end and a third end, the third end is electrically connected to the power monitoring end point; a directional coupler has a first end, a second end and a third end, the first end The second end of the directional coupler is electrically connected to the second end of the second power divider, and the third end is electrically connected to the end point of the wireless access transmitter. ; A first radio frequency power detector having a first end, a second end and a third end, the first end being electrically connected to the attenuator; a second radio frequency power detector having a first end , a second end and a third end, the second end of the second radio frequency power detector is electrically connected to the first end of the second power divider; A voltage data acquisition device has a first end, a second end, a third end and a fourth end. The first end of the voltage data acquisition device is electrically connected to the second end of the first radio frequency power detector. The second end of the voltage data acquisition device is electrically connected to the first end of the second radio frequency power detector; the hub has a first end, a second end, a third end and a fourth end. terminal, the first terminal is electrically connected to the programmable attenuator, the second terminal of the hub is electrically connected to the third terminal of the voltage data acquisition device, and the third terminal is electrically connected to the test computer connection terminal. Connect; and a power supply, the third terminal of the first radio frequency power detector, the third terminal of the second radio frequency power detector, the fourth terminal of the voltage data acquisition device and the fourth terminal of the hub are connected to The power supply is electrically connected. The selective receiver test device as described in item 1 of the patent application, wherein the radio frequency signal separation component has a first radio frequency circulator and a second radio frequency circulator and a complex attenuator. The first and second radio frequency circulators Disposed at both ends, the attenuators are disposed side by side and both ends are electrically connected to the first and second radio frequency circulators respectively. The selective receiver testing device as described in item 1 of the patent application, wherein an adapter is provided between the voltage data acquisition device and the first radio frequency power detector and the second radio frequency power detector. As for the selective receiver test device described in item 1 of the patent application, the test computer connection terminal is electrically connected to a test computer. The selective receiver test device as described in item 1 of the patent application, wherein the endpoint of the object under test is connected to an object under test, and the wireless access transmitter endpoint is connected to a wireless access device The transmitter, the interference signal input terminal and the power monitoring terminal are respectively connected to an impedance matching device. For the selective receiver test device described in item 1 of the patent application, the endpoint of the object under test is connected to a signal analyzer, the interference signal input endpoint is connected to a vector signal generator, the power monitoring endpoint and the The wireless access transmitter endpoints are respectively connected to an impedance matching device. The selective receiver test device as described in item 1 of the patent application, wherein the end point of the object under test is connected to an object under test, the interference signal input end point is connected to a vector signal generator, and the power monitoring end point is connected to a A signal analyzer, the wireless access transmitter endpoint is connected to a wireless access transmitter.

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