A method and system for measuring the total radiated power of a 5G terminal in an active darkroom

Abstract

The present invention proposes a method and system for measuring the total radiation power of a 5G terminal in an active darkroom, which belongs to the field of 5G communication technology. It includes: a central processing unit sends a first instruction to a base station simulator, so that the base station simulator transmits a test signal for measuring the total radiation power of the 5G terminal, and the test signal is received by a 5G terminal placed on a two-dimensional turntable via a first antenna; after decoding the received test signal, the 5G terminal radiates the decoded test signal outward via its own antenna at a rated maximum transmission power, so that the second antenna continuously receives measurement data; a signal analyzer calculates the two-dimensional and three-dimensional directional patterns of the electromagnetic field based on the measurement data, and further determines the total radiation power of the 5G terminal. This method uses the gain directional patterns of the horizontal and vertical planes of the antenna to approximate the total radiation power TRP of the antenna, which improves the efficiency of the test and facilitates the realization and completion of automation.

Description

Technical Field

[0001] The present invention belongs to the field of 5G communication technology, and in particular relates to a method and system for measuring the total radiated power of a 5G terminal in an active darkroom. Background Art

[0002] Currently, my country's communications industry is developing rapidly, and people have higher expectations for mobile communications. 5G mobile communications technology can meet these expectations due to its faster speeds, larger capacity, and superior reliability. Consequently, this technology has been widely adopted, and the large-scale production and deployment of equipment using 5G communications technology has significantly boosted the commercialization of 5G. This raises the question of how to ensure the communication performance of 5G terminal devices. Before being released to the market, terminal devices must pass testing and certification by relevant organizations. These testing results can also provide guidance for performance optimization of current technologies, further improving 5G communication solutions. Currently, there are an increasing number of 5G terminal products, but they all utilize low-frequency resources (FR1), i.e., frequencies below 6 GHz. The true 5G frequency band, the millimeter wave (24 GHz-52.6 GHz) FR2, has not yet been used. In this frequency band, millimeter waves can truly achieve Gbit peak rates and millisecond-level latency. All terminal devices must undergo certification testing by relevant certification organizations before being released to the market. The results provide guidance for performance optimization and contribute to product improvement. Due to the tighter integration of electronic devices and antennas, 5G millimeter-wave testing can no longer rely on traditional direct RF circuit measurements. Instead, OTA (over the air) active measurement methods are required, typically performed in a darkroom with good electromagnetic shielding. OTA darkroom measurements are also known as active measurements because they can measure the radiated power and receiver sensitivity of 5G terminals, such as mobile phones.

[0003] Currently, there are two main methods for measuring the performance of 5G terminals. One is the traditional antenna testing method, known as passive measurement. The other is active measurement (OTA), which is performed in a darkroom with good electromagnetic shielding capabilities. It can measure the terminal's radiation capability and receiving sensitivity. The current OTA method requires adjusting the polarization position of the measurement antenna at each different angle, collecting data, and finally processing the data to obtain the terminal's total radiated power (TRP). In other words, TRP is calculated by measuring the equivalent radiation efficiency (ERP) of each data point. At the same time, the entire three-dimensional sphere needs to be covered, which involves the step size issue of each rotation. Measuring the entire three-dimensional spherical data is time-consuming, increasing the test cost, and the three-dimensional test itself is relatively complex. Summary of the Invention

[0004] In order to solve the above technical problems, the present invention proposes a solution for measuring the total radiated power of 5G terminals in an active darkroom.

[0005] The first aspect of the present invention discloses a method for measuring the total radiated power of a 5G terminal in an active anechoic chamber. The active anechoic chamber is a microwave anechoic chamber, which provides a free-space test environment and can isolate external electromagnetic interference. The anechoic chamber includes a first antenna, a two-dimensional turntable for placing the 5G terminal, and a second antenna. The rotation angle of the two-dimensional turntable is controlled by a stepper motor, which is located inside or outside the anechoic chamber. The anechoic chamber also includes a base station simulator, a signal analyzer, and a central processing unit. The method includes:

[0006] The central processor sends a first instruction to the base station simulator, causing the base station simulator to transmit a test signal for measuring the total radiation power of the 5G terminal, wherein the test signal is received by the 5G terminal placed on the two-dimensional turntable via the first antenna;

[0007] After decoding the received test signal, the 5G terminal radiates the decoded test signal outwardly via its own antenna at a rated maximum transmit power, so that the second antenna continuously receives measurement data, wherein:

[0008] The measurement data includes field strength data of the antenna of the 5G terminal at different angles of the main polarization horizontal section and field strength data of the antenna of the 5G terminal at different angles of the main polarization horizontal section;

[0009] During the radiation process, the two-dimensional turntable rotates with a fixed rotation step length under the action of the stepping motor, so that the 5G terminal on the two-dimensional turntable rotates accordingly, so as to enable the second antenna to receive the measurement data;

[0010] The second antenna sends the received measurement data to the signal analyzer for data processing to calculate the two-dimensional and three-dimensional directional patterns of the electromagnetic field based on the measurement data, and further determine the total radiation power of the 5G terminal.

[0011] According to the method of the first aspect of the present invention, before transmitting the test signal, the base station simulator selects any channel from its working channels as a test channel, and transmits the test signal through the test channel for measuring; the first antenna is a Link antenna, and the second antenna is a dual-polarized horn antenna.

[0012] According to the method of the first aspect of the present invention, the central processing unit sends a second instruction to the stepper motor, so that the stepper motor controls the rotation step of the two-dimensional turntable. The two-dimensional turntable feeds back real-time rotation data to the central processing unit to continuously update the rotation step according to the feedback data, thereby adjusting the rotation process of the two-dimensional turntable in real time in a closed-loop automatic feedback manner.

[0013] According to the method of the first aspect of the present invention, the two-dimensional electromagnetic field pattern calculated by the signal analyzer is characterized as follows:

[0014] G H (φ)=20lgh(φ)

[0015] G V (θ)=20lgv(θ)

[0016] Wherein, φ∈[0, 360°] represents the angular range of the main polarization horizontal section, θ∈[0, 180°] represents the angular range of the main polarization vertical section, h(φ) represents the normalized value of the field strength value of the main polarization horizontal section of the antenna of the 5G terminal at the angle φ, v(θ) represents the normalized value of the field strength value of the main polarization vertical section of the antenna of the 5G terminal at the angle θ, G H (φ) represents the two-dimensional gain pattern of the main polarization horizontal section of the antenna of the 5G terminal, G V (θ) represents the two-dimensional gain pattern of the main polarization vertical section of the antenna of the 5G terminal.

[0017] According to the method of the first aspect of the present invention, for any point P(φ, θ) on the test sphere, the three-dimensional gain pattern of the antenna of the 5G terminal is characterized as follows:

[0018]

[0019] Where v1 = sin 2 φcos 2 θ·[1-sin 2 φ], represents the weight coefficient related to the main polarization horizontal section of the antenna of the 5G terminal, v2 = sin 2 φ·[1-sin 2 φcos 2 θ] represents the weight coefficient associated with the vertical section of the main polarization of the antenna of the 5G terminal, Represents a weight function of the field strength measurement values ​​of the main polarization horizontal section and the main polarization vertical section of the antenna of the 5G terminal.

[0020] According to the method of the first aspect of the present invention, the total radiated power of the 5G terminal is characterized by:

[0021]

[0022] Among them, P t represents the rated maximum transmit power, and the discretized total radiated power is represented by:

[0023]

[0024] Wherein, N represents the total number of steps that the 5G terminal rotates at an angle θ, and M represents the total number of steps that the 5G terminal rotates at an angle φ.

[0025] According to the method of the first aspect of the present invention, before performing total radiation power measurement on the 5G terminal, the method also includes: placing a standard pyramid horn as a reference object to be tested on the two-dimensional turntable, and performing a total radiation power measurement process to calibrate and inspect the equipment inside and outside the microwave darkroom.

[0026] The second aspect of the present invention discloses a system for measuring the total radiated power of a 5G terminal in an active darkroom. The system includes: an active darkroom, which is a microwave darkroom; the microwave darkroom provides a free space test environment that can isolate external electromagnetic interference; the microwave darkroom includes a first antenna, a two-dimensional turntable for placing the 5G terminal, and a second antenna; the rotation angle of the two-dimensional turntable is controlled by a stepper motor, and the stepper motor is located inside or outside the microwave darkroom; the microwave darkroom also includes a base station simulator, a signal analyzer, and a central processing unit; wherein:

[0027] The central processor sends a first instruction to the base station simulator, causing the base station simulator to transmit a test signal for measuring the total radiation power of the 5G terminal, wherein the test signal is received by the 5G terminal placed on the two-dimensional turntable via the first antenna;

[0028] After decoding the received test signal, the 5G terminal radiates the decoded test signal outwardly via its own antenna at a rated maximum transmit power, so that the second antenna continuously receives measurement data, wherein:

[0029] The measurement data includes field strength data of the antenna of the 5G terminal at different angles of the main polarization horizontal section and field strength data of the antenna of the 5G terminal at different angles of the main polarization horizontal section;

[0030] During the radiation process, the two-dimensional turntable rotates with a fixed rotation step length under the action of the stepping motor, so that the 5G terminal on the two-dimensional turntable rotates accordingly, so as to enable the second antenna to receive the measurement data;

[0031] The second antenna sends the received measurement data to the signal analyzer for data processing to calculate the two-dimensional and three-dimensional directional patterns of the electromagnetic field based on the measurement data, and further determine the total radiation power of the 5G terminal.

[0032] According to the system of the second aspect of the present invention, before transmitting the test signal, the base station simulator selects any channel from its working channels as a test channel, and transmits the test signal through the test channel for measuring; the first antenna is a Link antenna, and the second antenna is a dual-polarized horn antenna.

[0033] According to the system of the second aspect of the present invention, the central processing unit sends a second instruction to the stepper motor, so that the stepper motor controls the rotation step of the two-dimensional turntable. The two-dimensional turntable feeds back real-time rotation data to the central processing unit to continuously update the rotation step according to the feedback data, thereby adjusting the rotation process of the two-dimensional turntable in real time in a closed-loop automatic feedback manner.

[0034] According to the system of the second aspect of the present invention, the two-dimensional electromagnetic field pattern calculated by the signal analyzer is characterized as follows:

[0035] G H (φ)=20lgh(φ)

[0036] G V (θ)=20lgv(θ)

[0037] Wherein, φ∈[0, 360°] represents the angular range of the main polarization horizontal section, θ∈[0, 180°] represents the angular range of the main polarization vertical section, h(φ) represents the normalized value of the field strength value of the main polarization horizontal section of the antenna of the 5G terminal at the angle φ, v(θ) represents the normalized value of the field strength value of the main polarization vertical section of the antenna of the 5G terminal at the angle θ, G H(φ) represents the two-dimensional gain pattern of the main polarization horizontal section of the antenna of the 5G terminal, G V (θ) represents the two-dimensional gain pattern of the main polarization vertical section of the antenna of the 5G terminal.

[0038] According to the system of the second aspect of the present invention, for any point P(φ, θ) on the test sphere, the three-dimensional gain pattern of the antenna of the 5G terminal is characterized as follows:

[0039]

[0040] Where v1 = sin 2 φ cos 2 θ·[1-sin 2 φ]. represents the weight coefficient related to the main polarization horizontal section of the antenna of the 5G terminal, v2=sin 2 φ·[1-sin 2 φcos 2 θ] represents the weight coefficient associated with the vertical section of the main polarization of the antenna of the 5G terminal, Represents a weight function of the field strength measurement values ​​of the main polarization horizontal section and the main polarization vertical section of the antenna of the 5G terminal.

[0041] According to the system of the second aspect of the present invention, the total radiated power of the 5G terminal is characterized by:

[0042]

[0043] Among them, P t represents the rated maximum transmit power, and the discretized total radiated power is represented by:

[0044]

[0045] Wherein, N represents the total number of steps that the 5G terminal rotates at an angle θ, and M represents the total number of steps that the 5G terminal rotates at an angle φ.

[0046] According to the system of the second aspect of the present invention, before performing total radiated power measurement on the 5G terminal, the method further includes: placing a standard pyramid horn as a reference object to be measured on the two-dimensional turntable, and performing a total radiated power measurement process to calibrate and inspect the equipment inside and outside the microwave darkroom.

[0047] A third aspect of the present invention discloses an electronic device. The electronic device includes a memory and a processor. The memory stores a computer program. When the processor executes the computer program, it implements the steps of the method for measuring the total radiated power of a 5G terminal in an active darkroom described in the first aspect of the present invention.

[0048] A fourth aspect of the present invention discloses a computer-readable storage medium having a computer program stored thereon, which, when executed by a processor, implements the steps of the method for measuring the total radiated power of a 5G terminal in an active darkroom described in the first aspect of the present invention.

[0049] In summary, the technical solution of the present invention is a fast TRP test method for the terminal TRP. The terminal is placed on a turntable. First, the electromagnetic field strength value on the horizontal section (H plane) of the main polarization is measured to obtain a two-dimensional gain pattern; the electromagnetic field strength value on the vertical section (V plane) of the main polarization is measured to obtain a two-dimensional gain pattern; and a three-dimensional gain pattern is obtained using a three-dimensional approximate formula. Finally, the TRP value of the test terminal is obtained by the approximate formula. This process downgrades the three-dimensional measurement to a two-dimensional measurement, speeding up the test. At the same time, the new approximate formula is used to consider the weight function of the measurement angle and field strength, so that the measurement result is more accurate and the error range is smaller. BRIEF DESCRIPTION OF THE DRAWINGS

[0050] In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the specific embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0051] Figure 1 This is a flow chart of a method for measuring the total radiated power of a 5G terminal in an active anechoic chamber according to an embodiment of the present invention;

[0052] Figure 2 This is a structural diagram of a system for measuring the total radiated power of a 5G terminal in an active anechoic chamber according to an embodiment of the present invention;

[0053] Figure 3 FIG. 4 is a structural diagram of an electronic device according to an embodiment of the present invention. DETAILED DESCRIPTION

[0054] To make the objectives, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts shall fall within the scope of protection of the present invention.

[0055] The first aspect of the present invention discloses a method for determining the tilt angle of a 5G antenna based on NB-IoT. Figure 1 This is a flow chart of a method for measuring the total radiated power of a 5G terminal in an active anechoic chamber according to an embodiment of the present invention; Figure 2 This is a structural diagram of a system for measuring the total radiated power of a 5G terminal in an active darkroom according to an embodiment of the present invention; Figure 1 and Figure 2 , specifically:

[0056] The active anechoic chamber is a microwave anechoic chamber, which provides a free space test environment and can isolate external electromagnetic interference. The microwave anechoic chamber includes a first antenna (Link antenna), a two-dimensional turntable for placing the 5G terminal (terminal to be tested), and a second antenna (measurement antenna). The rotation angle of the two-dimensional turntable is controlled by a stepper motor. The stepper motor is located inside the microwave anechoic chamber or outside the microwave anechoic chamber (preferably outside). The microwave anechoic chamber also includes a base station simulator (the base station simulator is located inside the comprehensive tester), a signal analyzer, and a central processing unit (computer, including a data processing module).

[0057] The method comprises:

[0058] The central processor sends a first instruction to the base station simulator, causing the base station simulator to transmit a test signal for measuring the total radiation power of the 5G terminal, wherein the test signal is received by the 5G terminal placed on the two-dimensional turntable via the first antenna;

[0059] After decoding the received test signal, the 5G terminal radiates the decoded test signal outwardly via its own antenna at a rated maximum transmit power, so that the second antenna continuously receives measurement data, wherein:

[0060] The measurement data includes field strength data of the antenna of the 5G terminal at different angles of the main polarization horizontal section and field strength data of the antenna of the 5G terminal at different angles of the main polarization horizontal section;

[0061] During the radiation process, the two-dimensional turntable rotates with a fixed rotation step length under the action of the stepping motor, so that the 5G terminal on the two-dimensional turntable rotates accordingly, so as to enable the second antenna to receive the measurement data;

[0062] The second antenna sends the received measurement data to the signal analyzer for data processing to calculate the two-dimensional and three-dimensional directional patterns of the electromagnetic field based on the measurement data, and further determine the total radiation power of the 5G terminal.

[0063] Specifically, during the test, the terminal is placed on a two-dimensional turntable and connected to the base station simulator through the first antenna. The transmission signal of the base station simulator is sent to the terminal through the first antenna (LINK antenna) of the darkroom measurement. The terminal's receiving system receives and decodes the signal, and the working channel of the base station is set as any channel to be tested. The microwave darkroom can provide a free space test environment to isolate internal and external electromagnetic interference. The terminal on the turntable to be tested is connected to the comprehensive tester through the first antenna (LINK antenna), and the maximum transmission power of the terminal to be tested is adjusted. At this time, the terminal to be tested is in the test state. A dual-polarized horn antenna is used as the second antenna and connected to a signal analyzer for real-time signal reception.

[0064] In some embodiments, before transmitting the test signal, the base station simulator selects any channel from its working channels as a test channel, and transmits the test signal through the test channel for measuring; the first antenna is a Link antenna, and the second antenna is a dual-polarized horn antenna.

[0065] In some embodiments, the central processing unit sends a second instruction to the stepper motor, so that the stepper motor controls the rotation step of the two-dimensional turntable. The two-dimensional turntable feeds back real-time rotation data to the central processing unit to continuously update the rotation step according to the feedback data, thereby adjusting the rotation process of the two-dimensional turntable in real time in a closed-loop automatic feedback manner.

[0066] In some embodiments, the two-dimensional electromagnetic field pattern calculated by the signal analyzer is characterized as follows:

[0067] G H (φ)=20lgh(φ)

[0068] G V (θ)=20lgv(θ)

[0069] Wherein, φ∈[0, 360°] represents the angular range of the main polarization horizontal section, θ∈[0, 180°] represents the angular range of the main polarization vertical section, h(φ) represents the normalized value of the field strength value of the main polarization horizontal section of the antenna of the 5G terminal at the angle φ, v(θ) represents the normalized value of the field strength value of the main polarization vertical section of the antenna of the 5G terminal at the angle θ, G H (φ) represents the two-dimensional gain pattern of the main polarization horizontal section of the antenna of the 5G terminal, G V (θ) represents the two-dimensional gain pattern of the main polarization vertical section of the antenna of the 5G terminal.

[0070] Specifically, the field strength values ​​of the main polarization horizontal slice (H plane) of the terminal antenna under test at different angles φ are measured and normalized to obtain h(φ). The field strength values ​​of the main polarization vertical slice (V plane) of the terminal antenna under test at different angles θ are measured and normalized to obtain v(θ). These data are collected, stored, and processed by a data analyzer. The turntable under test has a stepper motor, and the motor's rotation angle is controlled by a closed-loop automated feedback mechanism. The step size of each rotation can be adjusted as needed.

[0071] In some embodiments, for any point P(φ, θ) on the test sphere, the three-dimensional gain pattern of the antenna of the 5G terminal is characterized as follows (approximately and quickly calculated from the three-dimensional gain pattern):

[0072]

[0073] Where v1 = sin 2 φcos 2 θ·[1-sin 2 φ]. represents the weight coefficient related to the main polarization horizontal section of the antenna of the 5G terminal, v2=sin 2 φ·[1-sin 2 φcos 2 θ] represents the weight coefficient associated with the vertical section of the main polarization of the antenna of the 5G terminal, Represents a weight function of the field strength measurement values ​​of the main polarization horizontal section and the main polarization vertical section of the antenna of the 5G terminal.

[0074] In some embodiments, the total radiated power of the 5G terminal is characterized by:

[0075]

[0076] Among them, P t Indicates the rated maximum transmit power.

[0077] Since the above total radiated power is expressed in integral form, it needs to be discretized in the actual data processing process before it can be processed using programming software. The discretized total radiated power is represented as:

[0078]

[0079] Wherein, N represents the total number of steps that the 5G terminal rotates at an angle θ, and M represents the total number of steps that the 5G terminal rotates at an angle φ.

[0080] Specifically, considering openness and versatility, the above data analysis process can be implemented by computer programming, while loading the Measurement Studio plug-in for graph drawing. The use of the C# programming language enables the above process to be visualized.

[0081] In some embodiments, before performing total radiated power measurement on the 5G terminal, the method further includes: placing a standard pyramid horn as a reference object to be tested on the two-dimensional turntable, and performing a total radiated power measurement process to calibrate and inspect the equipment inside and outside the microwave darkroom.

[0082] Specifically, before formal testing, the system must be calibrated to account for spatial link losses and errors caused by loss in measuring instruments and cable connections. A standard pyramid horn is used as a reference standard, replacing the terminal under test. After the calibration test, a calibration file is generated, allowing the system to be recalibrated based on specific circumstances, including repairs to system equipment and when the accuracy of test results becomes questionable.

[0083] It can be seen that the method of the first aspect of the present invention utilizes the gain patterns of the horizontal and vertical planes of the antenna to approximate the total radiated power TRP of the antenna, thereby improving the efficiency of the test and facilitating the realization and completion of automation.

[0084] The second aspect of the present invention discloses a system for measuring the total radiated power of a 5G terminal in an active darkroom. Figure 2 As shown, the system includes: an active darkroom, which is a microwave darkroom; the microwave darkroom provides a free space test environment that can isolate external electromagnetic interference, and the microwave darkroom includes a first antenna (Link antenna), a two-dimensional turntable for placing the 5G terminal (terminal to be tested), and a second antenna (measurement antenna); the rotation angle of the two-dimensional turntable is controlled by a stepper motor, and the stepper motor is located inside the microwave darkroom or outside the microwave darkroom; the microwave darkroom also includes a base station simulator (located inside the comprehensive tester), a signal analyzer, and a central processing unit (computer, including a data processing module); wherein:

[0085] The central processor sends a first instruction to the base station simulator, causing the base station simulator to transmit a test signal for measuring the total radiation power of the 5G terminal, wherein the test signal is received by the 5G terminal placed on the two-dimensional turntable via the first antenna;

[0086] After decoding the received test signal, the 5G terminal radiates the decoded test signal outwardly via its own antenna at a rated maximum transmit power, so that the second antenna continuously receives measurement data, wherein:

[0087] The measurement data includes field strength data of the antenna of the 5G terminal at different angles of the main polarization horizontal section and field strength data of the antenna of the 5G terminal at different angles of the main polarization horizontal section;

[0088] During the radiation process, the two-dimensional turntable rotates with a fixed rotation step length under the action of the stepping motor, so that the 5G terminal on the two-dimensional turntable rotates accordingly, so as to enable the second antenna to receive the measurement data;

[0089] The second antenna sends the received measurement data to the signal analyzer for data processing to calculate the two-dimensional and three-dimensional directional patterns of the electromagnetic field based on the measurement data, and further determine the total radiation power of the 5G terminal.

[0090] According to the system of the second aspect of the present invention, before transmitting the test signal, the base station simulator selects any channel from its working channels as a test channel, and transmits the test signal through the test channel for measuring; the first antenna is a Link antenna, and the second antenna is a dual-polarized horn antenna.

[0091] According to the system of the second aspect of the present invention, the central processing unit sends a second instruction to the stepper motor, so that the stepper motor controls the rotation step of the two-dimensional turntable. The two-dimensional turntable feeds back real-time rotation data to the central processing unit to continuously update the rotation step according to the feedback data, thereby adjusting the rotation process of the two-dimensional turntable in real time in a closed-loop automatic feedback manner.

[0092] According to the system of the second aspect of the present invention, the two-dimensional electromagnetic field pattern calculated by the signal analyzer is characterized as follows:

[0093] G H (φ)=20lgh(φ)

[0094] G V (θ)=20lgv(θ)

[0095] Wherein, φ∈[0, 360°] represents the angular range of the main polarization horizontal section, θ∈[0, 180°] represents the angular range of the main polarization vertical section, h(φ) represents the normalized value of the field strength value of the main polarization horizontal section of the antenna of the 5G terminal at the angle φ, v(θ) represents the normalized value of the field strength value of the main polarization vertical section of the antenna of the 5G terminal at the angle θ, G H (φ) represents the two-dimensional gain pattern of the main polarization horizontal section of the antenna of the 5G terminal, G V (θ) represents the two-dimensional gain pattern of the main polarization vertical section of the antenna of the 5G terminal.

[0096] According to the system of the second aspect of the present invention, for any point P(φ, θ) on the test sphere, the three-dimensional gain pattern of the antenna of the 5G terminal is characterized as follows:

[0097]

[0098] Where v1 = sin 2 φcos 2 θ·[1-sin 2 φ], represents the weight coefficient related to the main polarization horizontal section of the antenna of the 5G terminal, v2 = sin 2 φ·[1-sin 2 φcos 2 θ] represents the weight coefficient associated with the vertical section of the main polarization of the antenna of the 5G terminal, Represents a weight function of the field strength measurement values ​​of the main polarization horizontal section and the main polarization vertical section of the antenna of the 5G terminal.

[0099] According to the system of the second aspect of the present invention, the total radiated power of the 5G terminal is characterized by:

[0100]

[0101] Among them, P t represents the rated maximum transmit power, and the discretized total radiated power is represented by:

[0102]

[0103] Wherein, N represents the total number of steps that the 5G terminal rotates at an angle θ, and M represents the total number of steps that the 5G terminal rotates at an angle φ.

[0104] According to the system of the second aspect of the present invention, before performing total radiated power measurement on the 5G terminal, the method further includes: placing a standard pyramid horn as a reference object to be measured on the two-dimensional turntable, and performing a total radiated power measurement process to calibrate and inspect the equipment inside and outside the microwave darkroom.

[0105] A third aspect of the present invention discloses an electronic device. The electronic device includes a memory and a processor. The memory stores a computer program. When the processor executes the computer program, it implements the steps of the method for measuring the total radiated power of a 5G terminal in an active darkroom described in the first aspect of the present invention.

[0106] Figure 3 FIG. 1 is a structural diagram of an electronic device according to an embodiment of the present invention; FIG. Figure 3As shown, the electronic device includes a processor, a memory, a communication interface, a display screen and an input device connected via a system bus. The processor of the electronic device is used to provide computing and control capabilities. The memory of the electronic device includes a non-volatile storage medium and an internal memory. The non-volatile storage medium stores an operating system and a computer program. The internal memory provides an environment for the operation of the operating system and the computer program in the non-volatile storage medium. The communication interface of the electronic device is used to communicate with an external terminal in a wired or wireless manner, and the wireless manner can be achieved through WIFI, an operator network, near field communication (NFC) or other technologies. The display screen of the electronic device can be a liquid crystal display or an electronic ink display screen, and the input device of the electronic device can be a touch layer covering the display screen, or a button, trackball or touchpad provided on the electronic device housing, or an external keyboard, touchpad or mouse.

[0107] Those skilled in the art will understand that Figure 3 The structure shown in the figure is only a structural diagram of the part related to the technical solution of the present disclosure, and does not constitute a limitation on the electronic device to which the solution of the present application is applied. The specific electronic device may include more or fewer components than shown in the figure, or combine certain components, or have a different component arrangement.

[0108] A fourth aspect of the present invention discloses a computer-readable storage medium having a computer program stored thereon, which, when executed by a processor, implements the steps of the method for measuring the total radiated power of a 5G terminal in an active darkroom described in the first aspect of the present invention.

[0109] In summary, the technical solution of the present invention is a fast TRP test method for the terminal TRP. The terminal is placed on a turntable. First, the electromagnetic field strength value on the horizontal section (H plane) of the main polarization is measured to obtain a two-dimensional gain pattern; the electromagnetic field strength value on the vertical section (V plane) of the main polarization is measured to obtain a two-dimensional gain pattern; and a three-dimensional gain pattern is obtained using a three-dimensional approximate formula. Finally, the TRP value of the test terminal is obtained by the approximate formula. This process downgrades the three-dimensional measurement to a two-dimensional measurement, speeding up the test. At the same time, the new approximate formula is used to consider the weight function of the measurement angle and field strength, so that the measurement result is more accurate and the error range is smaller.

[0110] Please note that the various technical features of the above embodiments can be combined arbitrarily. In order to make the description concise, not all possible combinations of the various technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification. The above-mentioned embodiments only express several implementation methods of the present application. The description is relatively specific and detailed, but it cannot be understood as a limitation on the scope of the invention patent. It should be pointed out that for ordinary technicians in this field, without departing from the concept of this application, several variations and improvements can be made, which all fall within the scope of protection of this application. Therefore, the scope of protection of the patent in this application shall be based on the attached claims.

Claims

1. A method for measuring the total radiated power of a 5G terminal in an active anechoic chamber, characterized by: The active anechoic chamber is a microwave anechoic chamber, which provides a free space test environment and can isolate external electromagnetic interference. The microwave anechoic chamber includes a first antenna, a two-dimensional turntable for placing the 5G terminal, and a second antenna. The rotation angle of the two-dimensional turntable is controlled by a stepper motor. The stepper motor is located inside or outside the microwave anechoic chamber. The microwave anechoic chamber also includes a base station simulator, a signal analyzer, and a central processing unit. The method comprises: The central processor sends a first instruction to the base station simulator, causing the base station simulator to transmit a test signal for measuring the total radiation power of the 5G terminal, wherein the test signal is received by the 5G terminal placed on the two-dimensional turntable via the first antenna; After decoding the received test signal, the 5G terminal radiates the decoded test signal outwardly via its own antenna at a rated maximum transmit power, so that the second antenna continuously receives measurement data, wherein: The measurement data includes field strength data of the antenna of the 5G terminal at different angles of the main polarization horizontal section and field strength data of the antenna of the 5G terminal at different angles of the main polarization vertical section; During the radiation process, the two-dimensional turntable rotates with a fixed rotation step length under the action of the stepping motor, so that the 5G terminal on the two-dimensional turntable rotates accordingly, so as to enable the second antenna to receive the measurement data; The second antenna sends the received measurement data to the signal analyzer for data processing to calculate the two-dimensional and three-dimensional directional patterns of the electromagnetic field based on the measurement data, and further determine the total radiation power of the 5G terminal.

2. The method for measuring the total radiated power of a 5G terminal in an active anechoic chamber according to claim 1, wherein: Before transmitting the test signal, the base station simulator selects any channel from its working channels as a test channel and transmits the test signal for measurement through the test channel; the first antenna is a Link antenna, and the second antenna is a dual-polarized horn antenna.

3. The method for measuring the total radiated power of a 5G terminal in an active anechoic chamber according to claim 2, wherein: The central processing unit sends a second instruction to the stepper motor, so that the stepper motor controls the rotation step of the two-dimensional turntable. The two-dimensional turntable feeds back real-time rotation data to the central processing unit to continuously update the rotation step according to the feedback data, thereby adjusting the rotation process of the two-dimensional turntable in real time in a closed-loop automatic feedback manner.

4. The method for measuring the total radiated power of a 5G terminal in an active darkroom according to claim 3, wherein: The two-dimensional electromagnetic field pattern calculated by the signal analyzer is characterized as follows: ， in, , represents the angular range of the main polarization horizontal section, , represents the angular range of the vertical section of the main polarization, Indicates that the main polarization horizontal section of the antenna of the 5G terminal is at an angle The normalized value of the field strength under Indicates that the main polarization vertical section of the antenna of the 5G terminal is at an angle The normalized value of the field strength under represents a two-dimensional gain pattern of the main polarization horizontal section of the antenna of the 5G terminal, Represents the two-dimensional gain pattern of the main polarization vertical section of the antenna of the 5G terminal.

5. The method for measuring the total radiated power of a 5G terminal in an active darkroom according to claim 4, wherein: For any point on the test sphere , the three-dimensional gain pattern of the antenna of the 5G terminal is characterized as follows: ， in, , represents the weight coefficient associated with the main polarization horizontal slice of the antenna of the 5G terminal, , represents the weight coefficient associated with the vertical section of the main polarization of the antenna of the 5G terminal, , represents the field strength measurement value weight function of the main polarization horizontal section and the main polarization vertical section of the antenna of the 5G terminal.

6. The method for measuring the total radiated power of a 5G terminal in an active darkroom according to claim 5, wherein: The total radiated power of the 5G terminal is characterized by: ， in, represents the rated maximum transmit power, and the discretized total radiated power is represented by: ， in, Indicates that the 5G terminal is at an angle The total number of steps of the next rotation, Indicates that the 5G terminal is at an angle The total number of steps in the next rotation.

7. The method for measuring the total radiated power of a 5G terminal in an active darkroom according to claim 6, wherein: Before performing total radiated power measurement on the 5G terminal, the method further includes: placing a standard pyramid horn as a reference object to be measured on the two-dimensional turntable, and performing a total radiated power measurement process to calibrate and inspect the equipment inside and outside the microwave darkroom.

8. A system for measuring the total radiated power of a 5G terminal in an active darkroom, characterized in that: The system includes: an active anechoic chamber, which is a microwave anechoic chamber; the microwave anechoic chamber provides a free space test environment that can isolate external electromagnetic interference, and the microwave anechoic chamber includes a first antenna, a two-dimensional turntable for placing the 5G terminal, and a second antenna; the rotation angle of the two-dimensional turntable is controlled by a stepper motor, and the stepper motor is located inside or outside the microwave anechoic chamber; the microwave anechoic chamber also includes a base station simulator, a signal analyzer, and a central processing unit; wherein: The central processor sends a first instruction to the base station simulator, causing the base station simulator to transmit a test signal for measuring the total radiation power of the 5G terminal, wherein the test signal is received by the 5G terminal placed on the two-dimensional turntable via the first antenna; After decoding the received test signal, the 5G terminal radiates the decoded test signal outwardly via its own antenna at a rated maximum transmit power, so that the second antenna continuously receives measurement data, wherein: The measurement data includes field strength data of the antenna of the 5G terminal at different angles of the main polarization horizontal section and field strength data of the antenna of the 5G terminal at different angles of the main polarization vertical section; During the radiation process, the two-dimensional turntable rotates with a fixed rotation step length under the action of the stepping motor, so that the 5G terminal on the two-dimensional turntable rotates accordingly, so as to enable the second antenna to receive the measurement data; The second antenna sends the received measurement data to the signal analyzer for data processing to calculate the two-dimensional and three-dimensional directional patterns of the electromagnetic field based on the measurement data, and further determine the total radiation power of the 5G terminal.

9. An electronic device, characterized in that: The electronic device includes a memory and a processor, the memory stores a computer program, and when the processor executes the computer program, it implements the steps in the method for measuring the total radiated power of a 5G terminal in an active darkroom according to any one of claims 1 to 7.

10. A computer-readable storage medium, characterized in that The computer-readable storage medium stores a computer program, and when the computer program is executed by the processor, the steps in the method for measuring the total radiated power of a 5G terminal in an active darkroom according to any one of claims 1 to 7 are implemented.

Images