Method, system and device for realizing high-accuracy power calibration compensation based on temperature monitoring, processor and readable storage medium thereof

Abstract

The invention relates to a method for achieving high-accuracy power calibration compensation based on temperature monitoring. The method comprises the following steps that a radio frequency front-end module is placed in a high-low temperature box for power testing; adjusting the temperature of the high and low temperature box according to a certain temperature step by step to obtain a plurality of power curves related to the temperature of the radio frequency front-end circuit; the temperature difference of the circuit is monitored, and the power error is compensated. The invention also relates to a system and a device for realizing high-accuracy power calibration compensation based on temperature monitoring, a processor and a readable storage medium thereof. By adopting the method, the system and the device for realizing high-accuracy power calibration compensation based on temperature monitoring, the processor and the computer readable storage medium thereof, the temperature and power change relationship under different frequencies is obtained, the power is compensated in a larger range, and the radio frequency front end in a communication measurement instrument is ensured to be influenced by the temperature even if the radio frequency front end is influenced by the temperature. The power compensation can be completed only by simply reading the temperature and sending the power difference value, and the problem of calculation complexity hardly exists.

Description

Technical Field

[0001] The present invention relates to the field of communication measuring instrument calibration technology, and in particular to the field of radio frequency front-end power calibration technology in communication measuring instruments, and specifically refers to a method, system, device, processor and computer-readable storage medium thereof for realizing high-accuracy power calibration compensation based on temperature monitoring. Background Art

[0002] The RF front end is a common component of communication measuring instruments. The application of communication measuring instruments runs through various links such as research and development, debugging, and production, and the use environment and temperature are different. The RF front end contains multiple RF devices. Affected by the ambient temperature, its static operating point will shift slightly, resulting in inconsistent working conditions of the RF devices in different ambient temperatures, which in turn affects the power of the RF front end. Taking the amplifier in the RF front end that is more obviously affected by temperature as an example, when the temperature changes from -40°C to +85°C, the power of a single amplifier generally changes by about 0.5 to 1dB. This change generally increases with the increase of frequency.

[0003] Although in most application scenarios, users use the instrument in a relatively constant temperature environment such as a laboratory, and the temperature variation range is small. According to 10 amplifiers, the temperature changes by 10°C, and the power changes by about 0.4-0.8dB. It can be seen that the power change caused by temperature in this part of the application scenario is not large. However, in extreme temperature environments, such as outdoor winter and summer, the temperature range changes by at least 40°C, and according to 10 amplifiers, the power changes by about 1.6-3.2dB. Such power measurement accuracy is no longer acceptable to users.

[0004] As a communication measuring instrument, it is necessary to take into account as many usage scenarios as possible and cover as large a temperature range as possible. In a larger temperature range, the power accuracy of the instrument should be improved. At present, the mainstream solution is to use a power calibration detection solution for power compensation, that is, to add a coupler at the transmitting or receiving end, intercept a small part of the signal and mix it to a low frequency for power detection and compensation. However, the addition of this part of the circuit introduces new power uncertainty, causing irreparable effects. Summary of the invention

[0005] The purpose of the present invention is to overcome the shortcomings of the above-mentioned prior art and provide a method, system, device, processor and computer-readable storage medium thereof for realizing high-accuracy power calibration compensation based on temperature monitoring, which has high accuracy, good stability and wide applicability.

[0006] In order to achieve the above objectives, the method, system, device, processor and computer-readable storage medium thereof for realizing high-accuracy power calibration compensation based on temperature monitoring of the present invention are as follows:

[0007] The method for realizing high-accuracy power calibration compensation based on temperature monitoring has the following main features:

[0008] (1) Place the RF front-end module in a high and low temperature chamber for power testing;

[0009] (2) Adjust the temperature of the high and low temperature chamber according to a certain temperature step, and measure and obtain multiple temperature-related power curves of the RF front-end circuit;

[0010] (3) Calculate the frequency-power-temperature relationship matrix of the RF front-end circuit;

[0011] (4) According to the temperature difference of the temperature monitoring circuit, find the corresponding power change value ΔP k , and compensate for power errors.

[0012] Preferably, the step (3) specifically comprises the following steps:

[0013] (3.1) Read the temperature difference obtained by the temperature monitoring circuit;

[0014] (3.2) If there is a temperature difference, the power change value corresponding to the meter reading compensation ΔP k ; If not, no processing is required.

[0015] The system for realizing high-accuracy power calibration compensation based on temperature monitoring for realizing the above method has the following main features: the system comprises:

[0016] The temperature monitoring circuit is connected to the radio frequency front-end circuit and is used to monitor the temperature change at a location with a relatively high temperature on the radio frequency front-end circuit.

[0017] Preferably, the system further comprises a processing module, the processing module comprises a control unit, a power measuring unit and a data calculation processing unit, and the control unit, the power measuring unit and the data calculation processing unit are respectively connected to the temperature monitoring circuit and the RF front-end circuit.

[0018] The device for realizing high-accuracy power calibration compensation based on temperature monitoring has the following main features: the device comprises:

[0019] a processor configured to execute computer executable instructions;

[0020] The memory stores one or more computer executable instructions. When the computer executable instructions are executed by the processor, the various steps of the method for realizing high-accuracy power calibration compensation based on temperature monitoring are implemented.

[0021] The processor for implementing high-accuracy power calibration compensation based on temperature monitoring has the main feature that the processor is configured to execute computer-executable instructions. When the computer-executable instructions are executed by the processor, the various steps of the above-mentioned method for implementing high-accuracy power calibration compensation based on temperature monitoring are implemented.

[0022] The main feature of the computer-readable storage medium is that a computer program is stored thereon, and the computer program can be executed by a processor to implement the various steps of the above-mentioned method for realizing high-accuracy power calibration compensation based on temperature monitoring.

[0023] The method, system, device, processor and computer-readable storage medium thereof for realizing high-accuracy power calibration compensation based on temperature monitoring of the present invention are adopted to solve the problem of inaccurate power caused by the influence of temperature on the RF front end in the communication measuring instrument within a larger temperature range. The present invention can cover as large a temperature range as possible in the test link, and obtain the relationship between temperature and power changes at different frequencies, so that the power can be compensated within a larger range, ensuring that even if the RF front end in the communication measuring instrument is affected by temperature, it will not cause a large power error. The present invention solves the problem of computational complexity of power calibration and power compensation based on temperature. Using the present invention, although the amount of test data in the early stage is large, the calculations are all linear functions, and the process is done once and for all, and the RF front end circuits produced later are all applicable to the relationship curve. It is suitable for communication measuring instruments, and only needs to simply read the temperature and send the power difference to complete the power compensation, and there is almost no computational complexity problem. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a schematic block diagram of power testing at different temperatures of the method for realizing high-accuracy power calibration compensation based on temperature monitoring of the present invention.

[0025] Figure 2 The graph is a relationship curve between frequency and power at different temperatures for the radio frequency front end of the method for realizing high-accuracy power calibration compensation based on temperature monitoring of the present invention.

[0026] Figure 3 It is a block diagram of an embodiment of a method for implementing high-accuracy power calibration compensation based on temperature monitoring according to the present invention.

[0027] Figure 4 This is a physical diagram of the radio frequency front-end circuit of the method for implementing high-accuracy power calibration compensation based on temperature monitoring according to the present invention.

[0028] Figure 5 This is a physical diagram of a temperature monitoring circuit of the method for implementing high-accuracy power calibration compensation based on temperature monitoring of the present invention.

[0029] Figure 6 The actual power test results of the method for implementing high-accuracy power calibration compensation based on temperature monitoring of the present invention are shown in FIG. DETAILED DESCRIPTION

[0030] In order to more clearly describe the technical content of the present invention, further description is given below in conjunction with specific embodiments.

[0031] The system for realizing high-accuracy power calibration compensation based on temperature monitoring of the present invention comprises:

[0032] (1) Place the RF front-end module in a high and low temperature chamber for power testing;

[0033] (2) Adjust the temperature of the high and low temperature chamber according to a certain temperature step, and measure and obtain multiple temperature-related power curves of the RF front-end circuit;

[0034] (3) Calculate the frequency-power-temperature relationship matrix of the RF front-end circuit;

[0035] (4) According to the temperature difference of the temperature monitoring circuit, find the corresponding power change value ΔP k , and compensate for power errors.

[0036] As a preferred embodiment of the present invention, the step (3) specifically comprises the following steps:

[0037] (3.1) Read the temperature difference obtained by the temperature monitoring circuit;

[0038] (3.2) If there is a temperature difference, the power change value corresponding to the meter reading compensation ΔP k ; If not, no processing is required.

[0039] The system for realizing high-accuracy power calibration compensation based on temperature monitoring of the present invention, wherein the system comprises:

[0040] The temperature monitoring circuit is connected to the radio frequency front-end circuit and is used to monitor the temperature change at a location with a relatively high temperature on the radio frequency front-end circuit.

[0041] As a preferred embodiment of the present invention, the system also includes a processing module, which includes a control unit, a power measurement unit and a data calculation processing unit, and the control unit, power measurement unit and data calculation processing unit are respectively connected to the temperature monitoring circuit and the RF front-end circuit.

[0042] The device for implementing the above method of the present invention is used to implement high-accuracy power calibration compensation based on temperature monitoring, wherein the device comprises:

[0043] a processor configured to execute computer executable instructions;

[0044] The memory stores one or more computer executable instructions. When the computer executable instructions are executed by the processor, the various steps of the method for realizing high-accuracy power calibration compensation based on temperature monitoring are implemented.

[0045] The processor of the present invention is used to implement high-accuracy power calibration compensation based on temperature monitoring, wherein the processor is configured to execute computer-executable instructions, and when the computer-executable instructions are executed by the processor, the various steps of the above-mentioned method for implementing high-accuracy power calibration compensation based on temperature monitoring are implemented.

[0046] The computer-readable storage medium of the present invention stores a computer program thereon, and the computer program can be executed by a processor to implement the various steps of the above-mentioned method for realizing high-accuracy power calibration compensation based on temperature monitoring.

[0047] In a specific implementation of the present invention, the problem of inaccurate power caused by the influence of temperature on the RF front end of a communication measuring instrument within a larger temperature range is solved, and the problem of complexity of power calibration and power compensation calculation based on temperature is solved.

[0048] The present invention provides a temperature-based high-accuracy power calibration and compensation method. By using the inventive method, a high-accuracy power calibration compensation table suitable for the RF front-end circuit can be obtained without introducing an additional RF circuit into the RF front-end circuit, and is particularly suitable for the RF front-end circuit with the same circuit, thereby improving the power accuracy of the communication measuring instrument using the RF front-end circuit in a wider temperature range. The specific technical solution is as follows:

[0049] A temperature monitoring circuit is added near the RF front-end circuit. The temperature monitoring circuit is not on the RF front-end circuit and has no connection with the RF front-end circuit. It is placed near the RF front-end circuit to monitor the temperature changes at the location with higher temperature on the RF front-end circuit.

[0050] The first step is to place the RF front-end circuit in a high and low temperature chamber for power testing. The temperature of the high and low temperature chamber is adjusted according to a certain temperature step, and multiple power curves related to temperature of the RF front end are measured. The test diagram is shown in the figure. Figure 1 The test results are shown in Figure 2 shown. Figure 2 Different curves in the figure represent different temperatures. Using room temperature 20°C as the reference, a linear function can be used to calculate the power difference (f i ,ΔT j ,ΔP k), where f i Represents a certain frequency, ΔT j Represents the temperature change relative to the reference temperature, ΔP k It represents the power change value under the current frequency and current temperature difference. Figure 2 As shown by the black arrows between the different curves and the curve 20℃, the arrow represents the corresponding change in power when the frequency changes by how many degrees Celsius relative to 20℃.

[0051] The second step is to use the frequency-power-temperature relationship (f i ,ΔT j ,ΔP k ) matrix storage and communication measurement instrument system, used in the future according to the temperature difference obtained by the temperature monitoring circuit in different use environments, to find the corresponding ΔP k , and compensate for power errors.

[0052] The temperature-based power calibration compensation scheme in the method of the present invention has the largest amount of data generated by the power test link of the RF front-end circuit in the high and low temperature box, and the frequency-power-temperature relationship (f i ,ΔT j ,ΔP k ) matrix. However, this link has been completely realized in the process of module production and development, and the test and calculation can cover the large-scale modules produced in the future. When applied to communication measuring instruments, it is only necessary to read the temperature difference obtained by the temperature monitoring circuit and compare it with the general use environment of 20℃. If there is a temperature difference, the meter is read to compensate the corresponding ΔP k , no processing is required if there is no temperature difference. It can be seen that the complexity is completely solved once and for all, and there is almost no calculation in the later application, which is extremely convenient to use.

[0053] The present invention provides a high-accuracy power calibration method based on temperature monitoring. By using the inventive method, a high-accuracy power calibration compensation table applicable to the RF front-end circuit can be obtained without introducing an additional RF circuit into the RF front-end circuit, and is particularly applicable to the RF front-end circuits of the same batch, thereby improving the power accuracy of the communication measuring instrument using the RF front-end circuit in a wider temperature range.

[0054] The actual example of the present invention is Figure 3 As shown in FIG. 1 , the RF front-end circuit is composed of two parts: the RF front-end circuit and the processing module. The RF front-end circuit specifically includes three RF amplifiers and a temperature monitoring circuit, and the processing module includes a control unit, a power measurement unit, and a data calculation and processing unit.

[0055] The parameters of the scheme of the present invention are as follows: the frequency range is 1 to 4 GHz, and the temperature range is 0 to 40°C. In a high and low temperature environment, the signal source and power meter are used to measure the power at a frequency of 50 MHz and a temperature of 10°C. The current frequency, current power, and temperature measured by the current temperature monitoring circuit are recorded. The test results are as follows: Figure 4 shown.

[0056] From the test results, it can be seen that when the temperature changes from 0℃ to 40℃, the power change in the full frequency band is about 1.25dB. From the perspective of a single vertical frequency, the power change does not completely conform to a linear transformation for every 10℃ change in temperature. From the perspective of horizontal frequency changes, at different frequencies, the power change does not completely conform to a linear transformation for every 10℃ change in temperature. The temperature in the figure is the temperature of the high and low temperature box, which corresponds to the temperature feedback from the temperature monitoring circuit.

[0057] Using computing software, with 20°C as the benchmark, we calculated the power change matrix at different frequencies and temperatures, where represents a certain frequency, represents the temperature change value relative to the benchmark temperature, and represents the power change value at the current frequency and the current temperature difference.

[0058] Next, the accuracy of the power compensation based on temperature of the method of the present invention is tested on the second identical RF front-end circuit. The second RF front-end circuit is placed in a high and low temperature box, and based on the existing power calibration curve of the second RF front-end circuit, the temperature of the high and low temperature box is adjusted to test the power accuracy at different temperatures and frequencies. The actual test results are as follows:

[0059] Frequency (GHz) 0℃ 10℃ 20℃ 30℃ 40℃ 1 -0.14 -0.43 0.23 0.08 0.12 1.5 -0.4 -0.03 -0.21 -0.11 -0.11 2 0.34 -0.1 0.19 -0.26 0.31 2.5 0.36 -0.32 -0.18 0.22 0.16 3 -0.22 -0.27 -0.24 0.05 0.37 3.5 0.42 0.03 -0.27 0.16 0.26 4 0.15 0.06 0.11 0.39 0.43

[0060] It can be seen from the experimental example that, using the power calibration compensation method based on temperature monitoring of the present invention, the power error does not exceed 0.5 dB in the range of 0-40°C and 1-4GHz, and the error is relatively small, which verifies the feasibility of the solution of the present invention.

[0061] The calibration module of the present invention is used for calibrating power, mainly using a temperature sensor to monitor temperature, and performing power compensation according to a pre-stored temperature and power curve, which is independent of the phase.

[0062] The present invention does not involve the problem of compensation value insertion points, which are completely implemented in the digital baseband. As long as the temperature difference is monitored, the compensation value is compensated in the baseband after data calculation in the baseband. The present invention focuses on the process of power compensation, rather than the interpolation of power compensation missing points. The specific implementation scheme of this embodiment can be found in the relevant description of the above embodiment, which will not be repeated here.

[0063] It can be understood that the same or similar parts of the above embodiments can be referenced to each other, and the contents not described in detail in some embodiments can refer to the same or similar contents in other embodiments.

[0064] It should be noted that, in the description of the present invention, the terms "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance. In addition, in the description of the present invention, unless otherwise specified, the meaning of "plurality" refers to at least two.

[0065] Any process or method description in a flowchart or otherwise described herein may be understood to represent a module, segment or portion of code that includes one or more executable instructions for implementing the steps of a specific logical function or process, and the scope of the preferred embodiments of the present invention includes alternative implementations in which functions may not be performed in the order shown or discussed, including performing functions in a substantially simultaneous manner or in the reverse order depending on the functions involved, which should be understood by those skilled in the art to which the embodiments of the present invention belong.

[0066] It should be understood that the various parts of the present invention can be implemented by hardware, software, firmware or a combination thereof. In the above-mentioned embodiments, a plurality of steps or methods can be implemented by software or firmware stored in a memory and executed by a suitable instruction execution device. For example, if implemented by hardware, as in another embodiment, it can be implemented by any one of the following technologies known in the art or their combination: a discrete logic circuit having a logic gate circuit for implementing a logic function for a data signal, a dedicated integrated circuit having a suitable combination of logic gate circuits, a programmable gate array (PGA), a field programmable gate array (FPGA), etc.

[0067] A person skilled in the art may understand that all or part of the steps in the method for implementing the above-mentioned embodiment may be completed by instructing related hardware through a program, and the corresponding program may be stored in a computer-readable storage medium, which, when executed, includes one or a combination of the steps of the method embodiment.

[0068] In addition, each functional unit in each embodiment of the present invention may be integrated into a processing module, or each unit may exist physically separately, or two or more units may be integrated into one module. The above-mentioned integrated module may be implemented in the form of hardware or in the form of a software functional module. If the integrated module is implemented in the form of a software functional module and sold or used as an independent product, it may also be stored in a computer-readable storage medium.

[0069] The storage medium mentioned above can be a read-only memory, a magnetic disk or an optical disk, etc.

[0070] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.

[0071] The method, system, device, processor and computer-readable storage medium thereof for realizing high-accuracy power calibration compensation based on temperature monitoring of the present invention are adopted to solve the problem of inaccurate power caused by the influence of temperature on the RF front end in the communication measuring instrument within a larger temperature range. The present invention can cover as large a temperature range as possible in the test link, and obtain the relationship between temperature and power changes at different frequencies, so that the power can be compensated within a larger range, ensuring that even if the RF front end in the communication measuring instrument is affected by temperature, it will not cause a large power error. The present invention solves the problem of computational complexity of power calibration and power compensation based on temperature. Using the present invention, although the amount of test data in the early stage is large, the calculations are all linear functions, and the process is done once and for all, and the RF front end circuits produced later are all applicable to the relationship curve. It is suitable for communication measuring instruments, and only needs to simply read the temperature and send the power difference to complete the power compensation, and there is almost no computational complexity problem.

[0072] In this specification, the present invention has been described with reference to specific embodiments thereof. However, it is apparent that various modifications and variations may be made without departing from the spirit and scope of the present invention. Therefore, the specification and drawings should be regarded as illustrative rather than restrictive.

Claims

1. A method for achieving high-accuracy power calibration compensation based on temperature monitoring, characterized in that: The method comprises the following steps: (1) Place the RF front-end module in a high and low temperature chamber for power testing; (2) Adjust the temperature of the high and low temperature chamber according to a certain temperature step, and measure and obtain multiple temperature-related power curves of the RF front-end circuit; (3) Calculate the frequency-power-temperature relationship matrix of the RF front-end circuit; (4) According to the temperature difference of the temperature monitoring circuit, find the corresponding power change value ΔP k , and compensate for power errors.

2. The method for realizing high-accuracy power calibration compensation based on temperature monitoring according to claim 1, characterized in that: The step (3) specifically comprises the following steps: (3.1) Read the temperature difference obtained by the temperature monitoring circuit; (3.2) If there is a temperature difference, the power change value corresponding to the meter reading compensation ΔP k ; If not, no processing is required.

3. A system for implementing the method of claim 1 and realizing high-accuracy power calibration compensation based on temperature monitoring, characterized in that: The system comprises: The temperature monitoring circuit is connected to the RF front-end circuit and is used to monitor the temperature change at a location with a relatively high temperature on the RF front-end circuit.

4. The system for realizing high-accuracy power calibration compensation based on temperature monitoring according to claim 1, characterized in that: The system also includes a processing module, which includes a control unit, a power measuring unit and a data calculation processing unit. The control unit, the power measuring unit and the data calculation processing unit are respectively connected to the temperature monitoring circuit and the radio frequency front-end circuit.

5. A device for realizing high-accuracy power calibration compensation based on temperature monitoring, characterized in that: The device comprises: a processor configured to execute computer-executable instructions; A memory storing one or more computer executable instructions, wherein when the computer executable instructions are executed by the processor, the steps of the method for realizing high-accuracy power calibration compensation based on temperature monitoring as described in any one of claims 1 to 2 are implemented.

6. A processor for implementing high-accuracy power calibration compensation based on temperature monitoring, characterized in that: The processor is configured to execute computer executable instructions. When the computer executable instructions are executed by the processor, the various steps of the method for realizing high-accuracy power calibration compensation based on temperature monitoring described in any one of claims 1 to 2 are implemented.

7. A computer-readable storage medium, characterized in that: A computer program is stored thereon, and the computer program can be executed by a processor to implement the various steps of the method for realizing high-accuracy power calibration compensation based on temperature monitoring as described in any one of claims 1 to 2.

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