Apparatus employing multi-channel transmit signals

Abstract

The application provides a device for adopting multi-channel transmitting signals, and belongs to the technical field of signal processing. The device comprises multiple signal transmitting branches, each of which comprises a directional antenna and a radio frequency channel connected with the directional antenna; a baseband module connected with the multiple signal transmitting branches; the radio frequency channel comprises a first band-pass filter, a second band-pass filter, a first radio frequency switch and a gain adjusting module; the first radio frequency switch is used for selecting the first band-pass filter or the second band-pass filter to be communicated with the gain adjusting module according to the working mode of the device for adopting multi-channel transmitting signals, so as to output the filtered target bandwidth signal through the directional antenna, output the filtered target bandwidth signal through the directional antenna in each signal transmitting branch, and further provide a test scene for a to-be-tested wearable device, so that the performance verification of the to-be-tested wearable device does not need to be carried out in an actual scene, the verification cost is reduced, and the verification efficiency is improved.

Description

Technical Field

[0001] This invention relates to the field of signal processing technology, and in particular to a device that employs multi-channel signal transmission. Background Technology

[0002] In real-world environments, WiFi / Bluetooth signals are severely affected by reflections, multipath propagation, obstruction, and dynamic interference, impacting the performance of wearable devices.

[0003] To verify the actual performance of wearable devices, they need to be tested in a real-world environment.

[0004] However, if each verification of the actual performance of a wearable device requires placing it in a real environment for testing, and the wearable device needs to be moved around, this testing method is time-consuming and labor-intensive, and cannot meet the current need for frequent verification. Summary of the Invention

[0005] This invention provides a device that uses multi-channel signal transmission to solve the problem of time-consuming and labor-intensive testing of wearable devices in real-world environments in the prior art, thereby enabling portable verification of the actual performance of wearable devices and reducing verification costs.

[0006] This invention provides a device for transmitting signals using multiple channels, comprising the following modules: Multiple signal transmission branches, each of which includes a directional antenna and a radio frequency channel connected to the directional antenna; A baseband module, connected to multiple of the aforementioned signal transmission branches, is used to provide a target bandwidth signal to the radio frequency channel in each of the aforementioned signal transmission branches; The radio frequency channel includes a first bandpass filter, a second bandpass filter, a first radio frequency switch, and a gain adjustment module. The first radio frequency switch is used to select either the first bandpass filter or the second bandpass filter to be connected to the gain adjustment module according to the operating mode of the device that uses multi-channel transmission signals, so as to output the filtered target bandwidth signal through the directional antenna.

[0007] According to the present invention, a device employing multi-channel signal transmission is provided, wherein the baseband module includes a multi-channel digital-to-analog converter, and the multiple output terminals of the multi-channel digital-to-analog converter are connected one-to-one with multiple signal transmission branches; one output terminal of the multi-channel digital-to-analog converter is connected to the input terminal of the first bandpass filter and the input terminal of the second bandpass filter in the corresponding signal transmission branch, respectively, for outputting the target bandwidth signal; the output terminal of the first bandpass filter is connected to the first input terminal of the first radio frequency switch, and the output terminal of the second bandpass filter is connected to the second input terminal of the first radio frequency switch; the output terminal of the first radio frequency switch is connected to the input terminal of the gain adjustment module, and the output terminal of the gain adjustment module is connected to the directional antenna.

[0008] According to the present invention, a device for transmitting signals using multiple channels is provided, wherein the baseband module further includes an editable logic chip and a storage chip. The storage chip is used to store the target bandwidth signal. The editable logic chip is connected to the input terminal of the multi-channel digital-to-analog converter and the storage chip respectively, and is used to read the target bandwidth signal from the storage chip and send the target bandwidth signal to the multi-channel digital-to-analog converter.

[0009] According to the present invention, an apparatus for employing multi-channel signal transmission is provided, the apparatus further comprising: A storage array for storing the target bandwidth signal; A disk array card, connected to the storage array; The data processing platform is connected to the programmable logic chip and the disk array card via a high-speed bus, and is used to read the target bandwidth signal and cache the read target bandwidth signal in the storage chip.

[0010] According to the present invention, an apparatus for employing multi-channel signal transmission is provided, the apparatus further comprising: A reference clock source is used to generate a reference clock signal with a first frequency. A frequency synthesizer, connected to the reference clock source, is used to output a clock signal of a second frequency based on a reference clock signal of the first frequency, wherein the second frequency is greater than the first frequency. The baseband module also includes: A clock generation module is connected to the programmable logic chip and the multiplexer, respectively, for receiving the clock signal of the second frequency and sending the clock signal of the second frequency to the programmable logic chip and the multiplexer.

[0011] According to the present invention, a device employing a multi-channel transmission signal is provided, wherein the passband frequency of the first bandpass filter is between 2400MHz and 2500MHz; The passband frequency of the second bandpass filter is between 5150MHz and 5895MHz.

[0012] According to the present invention, a device for transmitting signals using multiple channels is provided, wherein the target bandwidth signal is a simulated bandwidth signal; or the target bandwidth signal is a bandwidth signal measured by an acquisition device in a test scenario.

[0013] According to the present invention, a device for transmitting signals using multiple channels is provided. When the operating mode is a first operating mode, the first radio frequency switch selects the first bandpass filter to connect with the gain adjustment module so as to output the target bandwidth signal filtered by the first bandpass filter through the directional antenna. When the operating mode is the second operating mode, the first RF switch selects the second bandpass filter to connect with the gain adjustment module so as to output the target bandwidth signal filtered by the second bandpass filter through the directional antenna.

[0014] According to the present invention, a device for transmitting signals using multiple channels is provided, wherein each radio frequency channel further includes a second radio frequency switch, the input terminal of the second radio frequency switch is connected to one output terminal of the multiplex digital-to-analog converter, the first output terminal of the second radio frequency switch is connected to the input terminal of the first bandpass filter, and the second output terminal of the second radio frequency switch is connected to the input terminal of the second bandpass filter; The second radio frequency switch operates synchronously with the first radio frequency switch according to the operating mode of the device employing multi-channel transmission signals, so as to select the first bandpass filter or the second bandpass filter to be connected to the multi-channel digital-to-analog converter.

[0015] According to the present invention, a device for transmitting signals using multiple channels is provided. When the operating mode is a first operating mode, the first radio frequency switch selects the first bandpass filter to be connected to the gain adjustment module, and the second radio frequency switch selects the first bandpass filter to be connected to the multiplex digital-to-analog converter, so as to output the target bandwidth signal filtered by the first bandpass filter through the directional antenna. When the operating mode is the second operating mode, the first RF switch selects the second bandpass filter to connect with the gain adjustment module, and the second RF switch selects the second bandpass filter to connect with the multiplexer to the digital-to-analog converter, so as to output the target bandwidth signal filtered by the second bandpass filter through the directional antenna.

[0016] The present invention provides a device for transmitting signals using multiple channels. The baseband module is connected to multiple signal transmission branches and provides a target bandwidth signal to the radio frequency channel in each signal transmission branch. The filtered target bandwidth signal is then output through the directional antenna in each signal transmission branch, thereby providing a test scenario for the wearable device under test. This eliminates the need for performance verification of the wearable device under test in a real-world scenario, reducing verification costs and improving verification efficiency.

[0017] Meanwhile, each RF channel includes a first bandpass filter, a second bandpass filter, a first RF switch, and a gain adjustment module. Depending on the operating mode of the device that uses multi-channel transmission signals, the first or second bandpass filter can be connected to the gain adjustment module. By selecting different bandpass filters, different filtering can be performed on the target bandwidth signal, thereby providing a test environment with different bandwidths for the performance verification of the wearable device under test, and thus meeting the test needs of different scenarios. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in this invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0019] Figure 1 This is one of the topological diagrams of the device using multi-channel signal transmission provided by the present invention.

[0020] Figure 2 This is the second topological schematic diagram of the device using multi-channel signal transmission provided by the present invention.

[0021] Figure 3 This is a schematic diagram of the topology of the radio frequency channel provided by the present invention.

[0022] Figure 4 This is the third topological schematic diagram of the device using multi-channel signal transmission provided by the present invention.

[0023] Figure label: 10: Signal transmission branch; 101: Directional antenna; 102: RF channel; 1021: First bandpass filter; 1022: Second bandpass filter; 1023: First RF switch; 1024: Gain adjustment module; 1025: Second RF switch; 20: Baseband module; 201: Multiplexer digital-to-analog converter; 202: Programmable logic chip; 203: Memory chip; 204: Clock generation module; 30: Memory array; 40: Disk array card; 50: Data processing platform; 60: Reference clock source; 70: Frequency synthesizer. Detailed Implementation

[0024] To make the objectives, technical solutions, and advantages of this invention clearer, the technical solutions of this invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this invention. All other embodiments obtained by those skilled in the art based on the embodiments of this invention without creative effort are within the scope of protection of this invention.

[0025] The following is combined with Figures 1 to 4 The present invention describes an apparatus employing multi-channel signal transmission.

[0026] Figure 1 This is one of the topological diagrams of the device employing multi-channel signal transmission provided by the present invention, such as... Figure 1 , Figure 2 and Figure 3 As shown, the device employing multi-channel signal transmission includes the following: Multiple signal transmission branches 10, each signal transmission branch 10 includes a directional antenna 101 and a radio frequency channel 102 connected to the directional antenna 101; The baseband module 20 is connected to multiple signal transmission branches 10 and is used to provide a target bandwidth signal to the radio frequency channel 102 in each signal transmission branch 10. The radio frequency channel 102 includes a first bandpass filter 1021, a second bandpass filter 1022, a first radio frequency switch 1023, and a gain adjustment module 1024. The first radio frequency switch 1023 is used to select the first bandpass filter 1021 or the second bandpass filter 1022 to be connected to the gain adjustment module 1024 according to the operating mode of the device that uses multi-channel transmission signals, so as to output the filtered target bandwidth signal through the directional antenna 101.

[0027] In some embodiments, the maximum bandwidth of the signal transmission branch 10 is 160MHz.

[0028] In some embodiments, multiple signal transmission branches 10 correspond to multiple directional antennas 101. In actual use of the device employing multi-channel signal transmission, the multiple directional antennas 101 are symmetrically distributed around the wearable device under test.

[0029] In some embodiments, such as Figure 4 As shown, when there are four signal transmission branches 10, the four directional antennas 101 are respectively located in front, behind, left, and right of the wearable device under test.

[0030] Specifically, the four signal transmission branches 10 correspond to the radio frequency channels 1, 2, 3 and 4 respectively, and transmit downlink signal 1, downlink signal 2, downlink signal 3 and downlink signal 4 to directional antennas 1, 2, 3 and 4 respectively, to verify the performance of the wearable device under test located in the anechoic chamber.

[0031] In some embodiments, when there are three signal transmission branches 10, the three directional antennas 101 are respectively located at 0°, 120° and 240° azimuth of the wearable device under test.

[0032] In some embodiments, when there are more than four signal transmission branches 10, multiple directional antennas 101 are respectively located in front, behind, left, right, and up and down of the wearable device under test.

[0033] The target bandwidth signal is the bandwidth signal of the wearable device under test in the actual use scenario.

[0034] In some embodiments, the target bandwidth signal may include Bluetooth and Wi-Fi signals in the 2.4G and 5G frequency bands.

[0035] In this embodiment, the baseband module 20 is connected to multiple signal transmission branches 10 and provides a target bandwidth signal to the radio frequency channel 102 in each signal transmission branch 10 so that the filtered target bandwidth signal can be output through the directional antenna 101 in each signal transmission branch 10, thereby providing a test scenario for the wearable device under test. This eliminates the need for performance verification of the wearable device under test in a real-world scenario, reducing verification costs and improving verification efficiency.

[0036] Meanwhile, each RF channel 102 includes a first bandpass filter 1021, a second bandpass filter 1022, a first RF switch 1023, and a gain adjustment module 1024. Depending on the operating mode of the device that uses multi-channel transmission signals, the first bandpass filter 1021 or the second bandpass filter 1022 can be connected to the gain adjustment module 1024. By selecting different bandpass filters, different filtering can be performed on the target bandwidth signal, thereby providing a test environment with different bandwidths for the performance verification of the wearable device under test, and thus meeting the test needs of different scenarios.

[0037] In the above embodiment, the gain adjustment module 1024 can perform amplification and attenuation processing on the target bandwidth signal after passing through the first bandpass filter 1021 or the second bandpass filter 1022, so that the signal enters the next stage module at an ideal power, that is, the signal enters the directional antenna 101 at an ideal power, thereby meeting the verification needs of the actual scenario.

[0038] In some embodiments, the gain adjustment module 1024 is designed with a dynamic attenuation adjustment range from 30dB gain to 110dB.

[0039] In some embodiments, the attenuation adjustment step of the gain adjustment module 1024 is 0.5dB.

[0040] In some embodiments, such as Figure 4 As shown, the baseband module 20 includes a multi-channel digital-to-analog converter 201, and the multiple output terminals of the multi-channel digital-to-analog converter 201 are connected to multiple signal transmission branches 10 one by one. One output terminal of the multi-channel digital-to-analog converter 201 is connected to the input terminal of the first bandpass filter 1021 and the input terminal of the second bandpass filter 1022 in the corresponding signal transmission branch 10, respectively, for outputting the target bandwidth signal. The output terminal of the first bandpass filter 1021 is connected to the first input terminal of the first radio frequency switch 1023, and the output terminal of the second bandpass filter 1022 is connected to the second input terminal of the first radio frequency switch 1023. The output terminal of the first RF switch 1023 is connected to the input terminal of the gain adjustment module 1024, and the output terminal of the gain adjustment module 1024 is connected to the directional antenna 101.

[0041] In this embodiment, each output of the multi-channel digital-to-analog converter 201 is simultaneously connected to the input of the first bandpass filter 1021 and the input of the second bandpass filter 1022 in a signal transmission branch 10. This converts the digital signal into an analog signal and forwards it to the signal transmission branch 10, while reducing the use of connection ports. It also provides a basis for the directional antennas 101 in different signal transmission branches 10 to synchronously transmit the filtered target bandwidth signal.

[0042] In some embodiments, synchronization technology can be used to ensure that the signal transmission time error between signal transmission branches 10 is within 20 ps.

[0043] In addition, the first and second input terminals of the first RF switch 1023 are connected to the output terminals of the first bandpass filter 1021 and the second bandpass filter 1022 respectively, realizing the sharing of RF switches. While realizing path switch control, the manufacturing cost of the device using multi-channel transmission signals is reduced.

[0044] In some embodiments, such as Figure 4 As shown, the baseband module 20 also includes an editable logic chip 202 and a storage chip 203. The storage chip 203 is used to store the target bandwidth signal. The editable logic chip 202 is connected to the input terminal of the multiplexer 201 and the storage chip 203 respectively, and is used to read the target bandwidth signal from the storage chip 203 and send the target bandwidth signal to the multiplexer 201.

[0045] In this embodiment, by deploying an editable logic chip 202 and a storage chip 203, the editable logic chip 202 can read the target bandwidth signal from the storage chip 203 and send the read target bandwidth signal to the multiplexer 201, which then forwards the target bandwidth signal to multiple signal transmission branches 10.

[0046] In some embodiments, the programmable logic chip 202 is communicatively connected to the first radio frequency switch 1023 and is used to control the operation of the first radio frequency switch 1023 according to the operating mode of the device employing multi-channel transmission signals, thereby selecting the first bandpass filter 1021 or the second bandpass filter 1022 to be connected to the gain adjustment module 1024.

[0047] In some embodiments, the target bandwidth signal is buffered in the memory chip 203 as a ping-pong buffer.

[0048] In some embodiments, the programmable logic chip 202 and the multi-channel digital-to-analog converter 201 are integrated into a single package, thereby simplifying the layout of the baseband module 20, reducing the manufacturing difficulty of devices employing multi-channel signal transmission, and thereby achieving a signal transmission time error between signal transmission branches 10 within 20 ps.

[0049] In some embodiments, the apparatus employing multi-channel signal transmission further includes: Storage array 30 is used to store the target bandwidth signal; Disk array card 40 is connected to storage array 30; The data processing platform 50 is connected to the programmable logic chip 202 and the disk array card 40 via a high-speed bus, respectively, and is used to read the target bandwidth signal and cache the read target bandwidth signal in the storage chip 203.

[0050] In this embodiment, the storage array 30 and the disk array card 40 work together to achieve fast reading of the target bandwidth signal.

[0051] In some embodiments, the storage array 30 may support a storage capacity of 128TB.

[0052] In some embodiments, a central processing unit is deployed on the data processing platform 50, wherein when the central processing unit executes a pre-set program, it reads the target bandwidth signal and caches the read target bandwidth signal in the storage chip 203.

[0053] In some embodiments, the high-speed bus is a high-speed serial computer expansion bus standard (peripheral component interconnect express, PCI-Express) bus, such as PCIE 3.0 16X.

[0054] In some embodiments, such as Figure 4 As shown, SLOT1: PCIE3.0 16X and SLOT2: PCIE3.0 16X are deployed on the data processing platform 50, and are connected to the programmable logic chip 202 and the disk array card 40, respectively.

[0055] In some embodiments, the apparatus employing multi-channel signal transmission further includes: Reference clock source 60 is used to generate a reference clock signal of the first frequency; The frequency synthesizer 70 is connected to the reference clock source 60 and is used to output a clock signal of a second frequency based on a reference clock signal of a first frequency, wherein the second frequency is greater than the first frequency. Baseband module 20 also includes: The clock generation module 204 is connected to the programmable logic chip 202 and the multiplexer 201 respectively. It is used to receive a clock signal of the second frequency and send the clock signal of the second frequency to the programmable logic chip 202 and the multiplexer 201.

[0056] In this embodiment, the clock generation module 204 is connected to the frequency synthesizer 70 and synchronizes the second frequency clock signal to the programmable logic chip 202 and the multiplex digital-to-analog converter 201. This enables the programmable logic chip 202 and the multiplex digital-to-analog converter 201 to use RF direct sampling technology and directly transmit the target bandwidth signal into the environment using the directional antenna 101, thereby meeting the verification requirements in actual scenarios.

[0057] In some embodiments, the first frequency is 100MHz and the second frequency is 4.4GHz.

[0058] In some embodiments, the reference clock source 60 may also input a 10MHz clock signal as needed for actual use, and generate a reference clock signal of a first frequency based on the 10MHz clock signal.

[0059] In some embodiments, the reference clock source 60 may also output a 100MHz clock signal to other modules of the device employing a multi-channel transmission signal as needed. These other modules may be deployed as needed, and the specific modules they contain will not be described in detail here.

[0060] In some embodiments, the passband frequency of the first bandpass filter 1021 is between 2400MHz and 2500MHz; The passband frequency of the second bandpass filter 1022 is between 5150MHz and 5895MHz.

[0061] In some embodiments, the target bandwidth signal is a simulated bandwidth signal; or the target bandwidth signal is a bandwidth signal measured by the acquisition device in the test scenario.

[0062] In this embodiment, the target bandwidth signal is a simulated bandwidth signal, that is, a simulated standard Bluetooth and WIFI ideal signal. In this process, there is no need to spend costs to determine the test scenario, thereby reducing the verification cost of the wearable device under test.

[0063] The target bandwidth signal can also be the bandwidth signal measured by the acquisition device in the test scenario. This allows the target bandwidth signal played back by the device that uses multi-channel transmission signals to more realistically reflect the actual working conditions and simulate field data.

[0064] In this embodiment, since there is no need to conduct verification in real-world scenarios, the time and effort spent on field trials are saved, greatly improving the efficiency of verification.

[0065] Furthermore, since the target bandwidth signal is stored in the storage array 30, it can be processed according to actual usage needs, such as using the gain adjustment module 1024 to adjust the gain, and then performing stress tests on the wearable device under test to simulate various changes in the external electromagnetic environment, providing a strong basis for improving the performance of subsequent devices.

[0066] In some embodiments, when the operating mode is the first operating mode, the first RF switch 1023 selects the first bandpass filter 1021 to connect with the gain adjustment module 1024 so as to output the target bandwidth signal filtered by the first bandpass filter 1021 through the directional antenna 101; when the operating mode is the second operating mode, the first RF switch 1023 selects the second bandpass filter 1022 to connect with the gain adjustment module 1024 so as to output the target bandwidth signal filtered by the second bandpass filter 1022 through the directional antenna 101.

[0067] In this embodiment, the first and second operating modes can be set by the user, selected by the programmable logic chip 202, or set by a host computer communicating with a device that uses multi-channel transmission signals.

[0068] In some embodiments, each RF channel 102 further includes a second RF switch 1025. The input terminal of the second RF switch 1025 is connected to one output terminal of the multiplexer 201, the first output terminal of the second RF switch 1025 is connected to the input terminal of the first bandpass filter 1021, and the second output terminal of the second RF switch 1025 is connected to the input terminal of the second bandpass filter 1022. The second RF switch 1025 operates synchronously with the first RF switch 1023 according to the operating mode of the device employing multi-channel transmission signals, so as to select the first bandpass filter 1021 or the second bandpass filter 1022 to connect to the multiplexer 201.

[0069] In this embodiment, the second RF switch 1025 is used in conjunction with the first RF switch 1023 to form a filtering channel between the first bandpass filter 1021 or the second bandpass filter 1022, thereby improving the isolation.

[0070] Specifically, if only the first RF switch 1023 is used, the target bandwidth signals including Bluetooth and WIFI will simultaneously enter the first bandpass filter 1021 and the second bandpass filter 1022. Although the first bandpass filter 1021 and the second bandpass filter 1022 will filter out the corresponding noise, they are not 100% filtered out, and there will still be weak signal or noise leakage. When the second RF switch 1025 is used in conjunction with the first RF switch 1023, it can prevent noise from entering at the source of the first bandpass filter 1021 and the second bandpass filter 1022, thereby improving the isolation.

[0071] In addition, the first RF switch 1023 and the second RF switch 1025 used in conjunction can reduce signal crosstalk and improve the cleanliness of the bandwidth signal output by the device that uses multi-channel transmission signals.

[0072] In some embodiments, when the operating mode is the first operating mode, the first RF switch 1023 selects the first bandpass filter 1021 to connect with the gain adjustment module 1024, and the second RF switch 1025 selects the first bandpass filter 1021 to connect with the multiplexer 201, so as to output the target bandwidth signal filtered by the first bandpass filter 1021 through the directional antenna 101; when the operating mode is the second operating mode, the first RF switch 1023 selects the second bandpass filter 1022 to connect with the gain adjustment module 1024, and the second RF switch 1025 selects the second bandpass filter 1022 to connect with the multiplexer 201, so as to output the target bandwidth signal filtered by the second bandpass filter 1022 through the directional antenna 101.

[0073] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A device employing multi-channel signal transmission, characterized in that, include: Multiple signal transmission branches, each of which includes a directional antenna and a radio frequency channel connected to the directional antenna; A baseband module, connected to multiple of the aforementioned signal transmission branches, is used to provide a target bandwidth signal to the radio frequency channel in each of the aforementioned signal transmission branches; The radio frequency channel includes a first bandpass filter, a second bandpass filter, a first radio frequency switch, and a gain adjustment module. The first radio frequency switch is used to select either the first bandpass filter or the second bandpass filter to be connected to the gain adjustment module according to the operating mode of the device that uses multi-channel transmission signals, so as to output the filtered target bandwidth signal through the directional antenna.

2. The device employing multi-channel signal transmission according to claim 1, characterized in that, The baseband module includes a multi-channel digital-to-analog converter, and the multiple output terminals of the multi-channel digital-to-analog converter are connected to the multiple signal transmission branches one by one; One output terminal of the multi-channel digital-to-analog converter is connected to the input terminals of the first bandpass filter and the second bandpass filter in the corresponding signal transmission branch, respectively, for outputting the target bandwidth signal. The output terminal of the first bandpass filter is connected to the first input terminal of the first radio frequency switch, and the output terminal of the second bandpass filter is connected to the second input terminal of the first radio frequency switch. The output terminal of the first RF switch is connected to the input terminal of the gain adjustment module, and the output terminal of the gain adjustment module is connected to the directional antenna.

3. The device employing multi-channel signal transmission according to claim 2, characterized in that, The baseband module also includes a programmable logic chip and a storage chip. The storage chip is used to store the target bandwidth signal. The programmable logic chip is connected to the input terminal of the multi-channel digital-to-analog converter and the storage chip, respectively, and is used to read the target bandwidth signal from the storage chip and send the target bandwidth signal to the multi-channel digital-to-analog converter.

4. The device employing multi-channel signal transmission according to claim 3, characterized in that, The device employing multi-channel signal transmission also includes: A storage array for storing the target bandwidth signal; A disk array card, connected to the storage array; The data processing platform is connected to the programmable logic chip and the disk array card via a high-speed bus, and is used to read the target bandwidth signal and cache the read target bandwidth signal in the storage chip.

5. The device employing multi-channel signal transmission according to claim 3, characterized in that, The device employing multi-channel signal transmission also includes: A reference clock source is used to generate a reference clock signal with a first frequency. A frequency synthesizer, connected to the reference clock source, is used to output a clock signal of a second frequency based on a reference clock signal of the first frequency, wherein the second frequency is greater than the first frequency. The baseband module also includes: A clock generation module is connected to the programmable logic chip and the multiplexer, respectively, for receiving the clock signal of the second frequency and sending the clock signal of the second frequency to the programmable logic chip and the multiplexer.

6. The apparatus employing a multi-channel signal transmission according to any one of claims 1 to 5, characterized in that, The passband frequency of the first bandpass filter is between 2400MHz and 2500MHz; The passband frequency of the second bandpass filter is between 5150MHz and 5895MHz.

7. The apparatus employing a multi-channel signal transmission according to any one of claims 1 to 5, characterized in that, The target bandwidth signal is a simulated bandwidth signal; or the target bandwidth signal is a bandwidth signal measured by the acquisition device in the test scenario.

8. The apparatus employing a multi-channel transmission signal according to any one of claims 1 to 5, characterized in that, When the operating mode is the first operating mode, the first RF switch selects the first bandpass filter to connect with the gain adjustment module so as to output the target bandwidth signal filtered by the first bandpass filter through the directional antenna; When the operating mode is the second operating mode, the first RF switch selects the second bandpass filter to connect with the gain adjustment module so as to output the target bandwidth signal filtered by the second bandpass filter through the directional antenna.

9. The apparatus employing a multi-channel signal transmission according to any one of claims 2 to 5, characterized in that, Each of the radio frequency channels further includes a second radio frequency switch, the input terminal of the second radio frequency switch being connected to one output terminal of the multiplexer, the first output terminal of the second radio frequency switch being connected to the input terminal of the first bandpass filter, and the second output terminal of the second radio frequency switch being connected to the input terminal of the second bandpass filter; The second radio frequency switch operates synchronously with the first radio frequency switch according to the operating mode of the device employing multi-channel transmission signals, so as to select the first bandpass filter or the second bandpass filter to be connected to the multi-channel digital-to-analog converter.

10. The apparatus for employing multi-channel signal transmission according to claim 9, characterized in that, When the operating mode is the first operating mode, the first RF switch selects the first bandpass filter to be connected to the gain adjustment module, and the second RF switch selects the first bandpass filter to be connected to the multiplexer digital-to-analog converter, so as to output the target bandwidth signal filtered by the first bandpass filter through the directional antenna; When the operating mode is the second operating mode, the first RF switch selects the second bandpass filter to connect with the gain adjustment module, and the second RF switch selects the second bandpass filter to connect with the multiplexer to the digital-to-analog converter, so as to output the target bandwidth signal filtered by the second bandpass filter through the directional antenna.

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