Power amplifier transient response simulation method, device, equipment and storage medium

Abstract

The embodiment of the present application discloses a transient response simulation method, device, equipment and storage medium of a power amplifier. The method determines the temperature value of each stage of the power amplifier in a thermally stable state, defines preset variables in a simulation environment, simulates the change in temperature value over time during the operation of the power amplifier through the preset variables, scans the preset variables, generates a curve of the gain value of the power amplifier changing with the preset variables, calculates the slope of the curve, and adjusts the parameter information in the simulation circuit according to the slope. The present application utilizes the change in junction temperature of the power amplifier caused by the change in working time, which in turn affects the characteristics of the gain change of the power amplifier, simulates the time change through temperature change, thereby solving the problem of non-convergence and slow simulation speed caused by the need for scanning time in the existing transient simulation scheme, effectively improving the accuracy of the transient response simulation of the power amplifier and shortening the simulation time.

Description

Technical Field

[0001] The present application relates to the field of circuit simulation technology, and in particular to a transient response simulation method, device, equipment and storage medium of a power amplifier (PA). Background Art

[0002] 5G applications have brought about revolutionary changes in communication technology. In wireless communication systems, power amplifiers occupy the last stage of the transmission chain, providing the required RF power for the antenna, and are important contributors to the quality of the RF link in the communication system. Among the many indicators that characterize the performance of power amplifiers, the error vector magnitude (EVM) is the most critical. For a WiFi PA, dynamic EVM performance is one of its most critical performance indicators. With the continuous development of WiFi technology, there are now higher requirements for the dynamic EVM noise floor of WiFi PA, and the transient response capability of WiFi PA is an important factor affecting this indicator. Being able to accurately evaluate the transient response of the power amplifier in the early stages of design simulation can minimize the number of chip castings, save design costs, and improve design efficiency.

[0003] However, the applicant has found that in the prior art, the transient response simulation method of the power amplifier can only be simulated using a schematic diagram, which is too ideal and cannot truly reflect the transient response of the power amplifier. At the same time, there are often serious problems of non-convergence and excessively long simulation time. Summary of the invention

[0004] The present application provides a method, apparatus, device and storage medium for simulating the transient response of a power amplifier, which utilizes the change in junction temperature of the power amplifier as the operating time changes, thereby affecting the characteristics of the power amplifier gain change, effectively improving the accuracy of the power amplifier transient response simulation and shortening the simulation time.

[0005] The present application provides a method for simulating transient response of a power amplifier, comprising:

[0006] Determine the temperature value of each stage of the power amplifier die in a thermally stable state;

[0007] Defining preset variables in a simulation environment, and simulating the change of the temperature value over time during the operation of the power amplifier by using the preset variables;

[0008] Scanning the preset variable to generate a curve showing that the gain value of the power amplifier changes with the preset variable;

[0009] The slope of the curve is calculated, and parameter information in the simulation circuit is adjusted according to the slope.

[0010] In one embodiment, generating a curve showing that the gain value of the power amplifier varies with the preset variable includes:

[0011] Adding a small signal parameter simulation component and a harmonic balance simulation component to the simulation circuit;

[0012] Create a variable scanning component, and nest and link the variable scanning component with the small signal parameter simulation component and the harmonic balance simulation component;

[0013] The different preset variables are simulated, the gain data of the power amplifier corresponding to the different preset variables are extracted from the simulation results, and the curve is drawn according to the different preset variables and the gain data.

[0014] In one embodiment, adding a small signal parameter simulation component and a harmonic balance simulation component to the simulation circuit includes:

[0015] Setting a port of a small signal parameter simulation component in the simulation circuit, and setting a frequency range of the small signal parameter simulation component according to the operating frequency of the power amplifier;

[0016] A harmonic balance simulation component is added, and the harmonic order and excitation signal power of the harmonic balance simulation component are set.

[0017] In one embodiment, after creating the variable scanning component, the method further includes:

[0018] Setting a scan start value and a scan end value of the variable scan component according to the operating temperature variation range of the power amplifier;

[0019] The scanning step size of the variable scanning component is set according to the accuracy of the simulation circuit.

[0020] In one embodiment, the method further comprises:

[0021] The variable scanning component transfers the scanned preset variables to the small signal parameter simulation component and the harmonic balance simulation component to complete the simulation analysis of different preset variables.

[0022] In one embodiment, adjusting parameter information in the simulation circuit according to the slope includes at least one of the following:

[0023] For a bias circuit, adjusting a bias voltage or current according to the slope to optimize a transient response of the power amplifier;

[0024] For a matching network, adjusting component values ​​or topology structures according to the slope to optimize the transient response of the power amplifier;

[0025] For the feedback circuit, the feedback coefficient or feedback mode is adjusted according to the slope to optimize the transient response of the power amplifier.

[0026] In one embodiment, determining the temperature value of each stage die of the power amplifier in a thermally stable state includes:

[0027] An electromagnetic model of the power amplifier is constructed so that the electromagnetic model performs thermal simulation according to the operating power and ambient temperature of the power amplifier to obtain temperature values ​​of each stage of the power amplifier in a thermally stable state.

[0028] The present application also provides a transient response simulation device for a power amplifier, comprising:

[0029] A determination module, used to determine the temperature value of each stage of the power amplifier in a thermally stable state;

[0030] A simulation module, used to define preset variables in a simulation environment, and to simulate the change of the temperature value over time during the operation of the power amplifier through the preset variables;

[0031] A generating module, used for scanning the preset variable and generating a curve showing that the gain value of the power amplifier changes with the preset variable;

[0032] The adjustment module is used to calculate the slope of the curve and adjust parameter information in the simulation circuit according to the slope.

[0033] The present application also provides an electronic device, comprising a memory and a processor, wherein the memory stores a computer program, and the processor executes the steps in any one of the transient response simulation methods of the power amplifier provided in the present application by calling the computer program stored in the memory.

[0034] The present application also provides a computer-readable storage medium, in which a plurality of computer programs are stored. The computer programs can be loaded by a processor to execute the steps in any one of the transient response simulation methods of a power amplifier provided in the present application.

[0035] The transient response simulation method of the power amplifier provided by the present application determines the temperature value of each stage of the power amplifier in a thermally stable state, defines preset variables in a simulation environment, simulates the change in temperature value over time during the operation of the power amplifier through the preset variables, scans the preset variables, generates a curve of the gain value of the power amplifier changing with the preset variables, calculates the slope of the curve, and adjusts the parameter information in the simulation circuit according to the slope. The embodiment of the present application utilizes the change in junction temperature of the power amplifier with the change in working time, which in turn affects the characteristics of the gain change of the power amplifier, and simulates the time change through temperature change, thereby solving the problem of non-convergence and slow simulation speed caused by the need for scanning time in the existing transient simulation scheme. Therefore, the present application effectively improves the accuracy of the transient response simulation of the power amplifier and shortens the simulation time. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] In order to more clearly illustrate the technical solution in the present application, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For those skilled in the art, other drawings can be obtained based on these drawings without paying any creative work.

[0037] Figure 1 This is a first flow chart of a transient response simulation method for a power amplifier provided in an embodiment of the present application;

[0038] Figure 2 This is a second flow chart of the transient response simulation method of a power amplifier provided in an embodiment of the present application;

[0039] Figure 3 It is a structural schematic diagram of a transient response simulation device of a power amplifier provided in an embodiment of the present application;

[0040] Figure 4 It is a structural schematic diagram of an electronic device provided in an embodiment of the present application. DETAILED DESCRIPTION

[0041] Exemplary embodiments will be described in detail herein, examples of which are shown in the accompanying drawings. When the following description refers to the drawings, the same numbers in different drawings represent the same or similar elements unless otherwise indicated. The implementations described in the following exemplary embodiments do not represent all implementations consistent with the present application. Instead, they are merely examples of devices and methods consistent with some aspects of the present application as detailed in the appended claims.

[0042] It should be noted that, in this article, the terms "include", "comprises" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also includes other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, an element defined by the sentence "includes a ..." does not exclude the existence of other identical elements in the process, method, article or device including the element. In addition, components, features, and elements with the same name in different embodiments of the present application may have the same meaning or different meanings, and their specific meanings need to be determined by their explanation in the specific embodiment or further combined with the context of the specific embodiment.

[0043] It should be understood that, although the various steps in the flowchart in the embodiment of the present application are displayed in sequence according to the indication of the arrows, these steps are not necessarily performed in sequence according to the order indicated by the arrows. Unless there is a clear explanation in this article, the execution of these steps does not have a strict order restriction, and it can be performed in other orders. Moreover, at least a portion of the steps in the figure may include a plurality of sub-steps or a plurality of stages, and these sub-steps or stages are not necessarily performed at the same time, but can be performed at different times, and their execution order is not necessarily performed in sequence, but can be performed in turn or alternately with other steps or at least a portion of the sub-steps or stages of other steps.

[0044] It should be noted that, in this article, step codes such as 101, 102, etc. are used for the purpose of expressing the corresponding content more clearly and concisely, and do not constitute a substantial limitation on the sequence. When implementing the step, those skilled in the art may execute 102 first and then 101, etc., but these should all be within the scope of protection of this application.

[0045] Reference to "embodiments" herein means that a particular feature, structure, or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the present application. The appearance of the phrase in various locations in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0046] An embodiment of the present application provides a method for simulating the transient response of a power amplifier. The executor of the method for simulating the transient response of a power amplifier may be a transient response simulation device for a power amplifier provided in the embodiment of the present application, or a server integrating the transient response simulation device for a power amplifier, wherein the transient response simulation device for a power amplifier may be implemented in hardware or software.

[0047] like Figure 1 As shown, Figure 1 This is a schematic diagram of a first flow chart of a transient response simulation method of a power amplifier provided in an embodiment of the present application. The specific flow chart of the transient response simulation method of the power amplifier may be as follows:

[0048] 101. Determine the temperature value of each stage of the power amplifier under thermal stability.

[0049] In one embodiment, it is necessary to determine the temperature values ​​corresponding to the tube cores of each stage of the power amplifier, and the tube cores of each stage of the power amplifier may specifically include tube cores corresponding to the input stage, the intermediate stage, the output stage, etc. The above temperature values ​​refer to the temperature values ​​corresponding to the tube cores of each stage of the power amplifier when it reaches a thermally stable state after working for a long time. Among them, the thermally stable state means that the operating temperature of the power amplifier no longer changes significantly over time, which can be specifically obtained through thermal simulation software or experimental measurement. It should be noted that these temperatures are determined in the embodiments of the present application in order to simulate the influence of thermal effects on the performance of the power amplifier in a real working environment.

[0050] 102. Define preset variables in the simulation environment, and use the preset variables to simulate the change in temperature value over time during the operation of the power amplifier.

[0051] In one embodiment, the preset variable can be defined as Delta T, which is used to simulate the temperature change of the power amplifier during operation due to factors such as power consumption and ambient temperature change. The preset variable Delta T represents the temperature change of the power amplifier during operation. The power amplifier will eventually reach a thermally stable state, so the initial value of Delta T should be 0, and the maximum value does not exceed the temperature value in the thermally stable state. By adjusting the value of Delta T, this embodiment can simulate the temperature fluctuation of the power amplifier under different working conditions.

[0052] 103. Scan the preset variable to generate a curve showing that the gain value of the power amplifier changes with the preset variable.

[0053] In one embodiment, the change of the power amplifier gain can be observed by scanning the value of Delta T, that is, the above curve. Specifically, a small signal parameter simulation component and a harmonic balance simulation component can be added to the simulation circuit. The small signal parameter simulation component is used to analyze the small signal characteristics of the power amplifier, and the harmonic balance simulation component is used to analyze the behavior of the power amplifier under a large signal (such as a radio frequency signal in actual work). The combination of the two can provide a comprehensive analysis of the performance of the power amplifier.

[0054] Then set up the variable sweep component and nest it with the small signal parameter simulation component and harmonic balance simulation component. The variable sweep component will pass the scanned Delta T to the small signal parameter simulation component and the harmonic balance simulation component. During the simulation process, the value of Delta T will be systematically changed, and after each change, the parameter and harmonic balance simulation will be performed to observe the change in the power amplifier gain.

[0055] Furthermore, after completing the above simulation, the obtained power amplifier gain can be statistically processed, and the gain data under different Delta T values ​​can be extracted from the simulation results, and a curve can be drawn according to different Delta T values ​​and corresponding gain data to intuitively show the trend of power amplifier gain changing with temperature.

[0056] 104. Calculate the slope of the curve and adjust the parameter information in the simulation circuit according to the slope.

[0057] In one embodiment, after obtaining the curve of the power amplifier gain changing with Delta T, the transient response characteristics of the power amplifier can be analyzed. For example, if the slope of the curve is too large or too small, it means that the performance stability of the power amplifier is poor when the temperature changes. Therefore, the slope of the curve can be changed by adjusting the circuit design (such as changing component values, optimizing the layout, etc.) to improve the transient response characteristics of the power amplifier.

[0058] As described above, the transient response simulation method of the power amplifier proposed in the embodiment of the present application can be determined by determining the temperature value of each stage of the power amplifier in a thermally stable state, defining preset variables in a simulation environment, simulating the change in temperature value over time during the operation of the power amplifier through the preset variables, scanning the preset variables, generating a curve of the gain value of the power amplifier changing with the preset variables, calculating the slope of the curve, and adjusting the parameter information in the simulation circuit according to the slope. Through the above steps of this embodiment, it can be seen that the embodiment of the present application, based on the existing simulation method, utilizes the junction temperature change of the power amplifier caused by the change of the working time, which in turn affects the characteristics of the gain change of the power amplifier, and simulates the time change through the temperature change, thereby solving the problem of non-convergence and slow simulation speed caused by the need for scanning time in the existing transient simulation scheme. Therefore, the present application effectively improves the accuracy of the transient response simulation of the power amplifier and shortens the simulation time.

[0059] The method described in the above embodiment will be further described below.

[0060] See also Figure 2 , Figure 2 1 is a second flow chart of a transient response simulation method of a power amplifier provided in an embodiment of the present application. The method comprises:

[0061] 201. Construct an electromagnetic model of a power amplifier so that the electromagnetic model performs thermal simulation according to the operating power and ambient temperature of the power amplifier to obtain the temperature values ​​of each stage of the power amplifier in a thermally stable state.

[0062] In one embodiment, the temperature value of each stage of the power amplifier in a thermally stable state is one of the basic parameters for subsequent simulation, which is crucial for accurately simulating the thermal characteristics of the power amplifier in actual work, because temperature can significantly affect the performance of the power amplifier, such as gain and other parameters.

[0063] Specifically, the temperature value can be obtained through thermal simulation, wherein thermal simulation uses thermal analysis software to perform simulation calculations based on factors such as the physical structure, material properties, and heat dissipation conditions of the power amplifier. In the embodiment of the present application, it is necessary to accurately construct a three-dimensional model (i.e., an electromagnetic model) of the power amplifier, including components such as the die, package, and heat sink, and set corresponding material thermal conductivity, specific heat capacity, and other parameters. Then, thermal simulation is performed based on the operating power, ambient temperature, and other conditions of the power amplifier. After a certain number of calculation iterations, the temperature value corresponding to the die of each level of the power amplifier when it reaches a thermally stable state can be obtained.

[0064] Among them, the electromagnetic model of the power amplifier is a model that mathematically describes the distribution and interaction of electromagnetic fields inside and around the power amplifier. It is specifically used to describe the electromagnetic characteristics of circuit components (such as transistors, inductors, capacitors, etc.) under high-frequency working conditions. Using the electromagnetic model for simulation can more realistically reflect the transient characteristics of the power amplifier than the existing transient simulation solution that can only use pure schematic solutions.

[0065] 202. Define preset variables in the simulation environment, and simulate the change of temperature value over time during the operation of the power amplifier through the preset variables.

[0066] The preset variable Delta T is used to simulate the temperature change of each power amplifier over time during operation. Since the power amplifier generates heat during operation, its temperature will change dynamically over time, and Delta T is used to quantify this change.

[0067] Specifically, Delta T can be defined in the simulation environment, and an initial value and a range of variation can be set for it based on actual conditions or empirical values. This variable will play a key role in the subsequent scanning process, and the change in the performance of the power amplifier can be observed by changing the value of Delta T. For example, Delta T can be set to start from a small initial value and gradually increase in a certain step size to simulate the temperature accumulation effect of the power amplifier during long-term operation.

[0068] 203. Add small signal parameter simulation components and harmonic balance simulation components to the simulation circuit.

[0069] In one embodiment, the small signal parameter simulation component is used to analyze the small signal characteristics of the power amplifier at different frequencies. It can provide information about the input and output reflection coefficients, transmission coefficients, etc. of the power amplifier, which are used to understand the frequency response and matching of the power amplifier. The harmonic balance simulation component is used to analyze the nonlinear characteristics of the power amplifier under large signal working conditions, including harmonic generation, power efficiency, etc. By adding these two simulation components at the same time, the performance of the power amplifier under different working conditions can be comprehensively analyzed, providing a basis for accurately obtaining the curve of the power amplifier gain changing with DeltaT.

[0070] The step of adding a small signal parameter simulation component and a harmonic balance simulation component to the simulation circuit may include:

[0071] Set the port of the small signal parameter simulation component in the simulation circuit, set the frequency range of the small signal parameter simulation component according to the operating frequency of the power amplifier, add the harmonic balance simulation component, and set the harmonic order and excitation signal power of the harmonic balance simulation component.

[0072] For example, you can find the corresponding component library or tool menu in the simulation software interface, select the small signal parameter simulation component and the harmonic balance simulation component, and add them to the simulation circuit or model. For the small signal parameter simulation component, you need to set parameters such as input and output ports, frequency range, etc. to adapt to the operating frequency range of the power amplifier. For the harmonic balance simulation component, you need to set parameters such as harmonic order and excitation signal power to ensure that the nonlinear behavior of the power amplifier can be accurately simulated. At the same time, these two components need to be correctly connected and configured with the circuit model of the power amplifier so that they can work together to perform a comprehensive performance analysis of the power amplifier.

[0073] 204. Create a variable scanning component, and nest and link the variable scanning component with the small signal parameter simulation component and the harmonic balance simulation component.

[0074] The function of the variable scanning component is to change the value of the Delta T variable according to certain rules and ranges, and to achieve automatic simulation analysis of the power amplifier performance under different Delta T values ​​by nesting with the small signal parameter simulation component and the harmonic balance simulation component. In this way, a series of power amplifier performance data corresponding to different Delta T values ​​can be obtained, thereby providing data support for drawing a curve of the power amplifier gain changing with Delta T. In one embodiment, after creating the variable scanning component, the method may also include: setting the scanning start value and scanning end value of the variable scanning component according to the operating temperature variation range of the power amplifier, and setting the scanning step length of the variable scanning component according to the accuracy of the simulation circuit.

[0075] For example, first create a Delta T scanning component in the simulation software, and then set the start value, end value, step size and other parameters of the scan. The start value is generally set to 0, and the end value should be determined based on the actual operating temperature range of the power amplifier and the expected temperature change, but it must not exceed the temperature value under the aforementioned thermal stability state. The step size needs to be selected based on the accuracy requirements and computing resources of the simulation. Generally speaking, the smaller the step size, the more accurate the data obtained, but the calculation time will also increase accordingly. Then, the Delta T scanning component is nested with the small signal parameter simulation component and the harmonic balance simulation component, so that the Delta T value is automatically passed to these two simulation components during each scan, thereby realizing the simulation analysis of the power amplifier performance under different Delta T values.

[0076] 205. Simulate different preset variables, extract gain data of the power amplifier corresponding to different preset variables from the simulation results, and draw curves according to different preset variables and gain data.

[0077] In one embodiment, after simulation of different Delta T values, a series of curve data on power amplifier gain, power, frequency and other parameters are obtained. Considering that these data may be complex and contain some noise or unnecessary information, this embodiment can also extract the key relationship between power amplifier gain and Delta T through statistical processing to obtain a clear and accurate curve for subsequent analysis and circuit design adjustment.

[0078] Specifically, first extract the data related to the power amplifier gain, power and frequency from the simulation results. Then filter and organize these data to remove outliers and noise interference. Data smoothing algorithms, such as moving average method and median filtering method, can be used to smooth the data. Then classify and summarize the data according to the value of Delta T, and calculate the average value, maximum value, minimum value and other statistics of the power amplifier gain at each Delta T value. Finally, with DeltaT as the horizontal axis and the statistics of the power amplifier gain (such as the average value) as the vertical axis, draw a curve of the power amplifier gain changing with Delta T. When drawing the curve, you can select appropriate drawing tools and parameters, such as the color, line type, and markers of the curve, to improve the readability and visualization of the curve.

[0079] 206. Calculate the slope of the curve and adjust parameter information in the simulation circuit according to the slope.

[0080] Specifically, this embodiment can adjust the parameter information in the simulation circuit through the above slope to optimize the transient response of the power amplifier, wherein the transient response of the power amplifier is very important for its performance in practical applications, for example, in a communication system, a fast and accurate transient response can ensure the quality and transmission efficiency of the signal. The slope of the curve of the power amplifier gain obtained in step 3 changing with Delta T reflects certain performance characteristics of the power amplifier, and the transient response of the power amplifier can be indirectly adjusted by changing the slope of the curve.

[0081] Specifically, according to the slope of the above curve and the requirements for the performance of the power amplifier, the parts of the circuit that may affect the gain and transient response of the power amplifier, such as the bias circuit, matching network, feedback circuit, etc. of the transistor, can be analyzed. For the bias circuit, the bias voltage or current can be adjusted to change the operating point of the transistor, thereby affecting the gain and transient characteristics of the power amplifier. For the matching network, its component value or topology can be changed to optimize the input-output matching of the power amplifier at different frequencies and temperatures, thereby adjusting the transient response. For the feedback circuit, the feedback coefficient or feedback method can be adjusted to control the stability and transient response speed of the power amplifier.

[0082] It should be noted that when adjusting the circuit design, it is necessary to continuously perform simulation verification to observe whether the slope of the curve of the power amplifier gain changing with Delta T meets expectations and whether the transient response of the power amplifier is improved. If the adjustment effect is not ideal, further optimization is required until the expected adjustment purpose is achieved.

[0083] As described above, the transient response simulation method of the power amplifier proposed in the embodiment of the present application can construct an electromagnetic model of the power amplifier, so that the electromagnetic model can perform thermal simulation according to the operating power and ambient temperature of the power amplifier to obtain the temperature values ​​of each stage of the power amplifier under a thermally stable state, define preset variables in the simulation environment, simulate the change in temperature value over time during the operation of the power amplifier through the preset variables, add a small signal parameter simulation component and a harmonic balance simulation component to the simulation circuit, create a variable scanning component, and nest the variable scanning component with the small signal parameter simulation component and the harmonic balance simulation component to simulate different preset variables, extract the gain data of the power amplifier corresponding to different preset variables in the simulation results, draw a curve according to different preset variables and gain data, calculate the slope of the curve, and adjust the parameter information in the simulation circuit according to the slope. The embodiment of the present application utilizes the change in junction temperature of the power amplifier as the working time changes, which in turn affects the characteristics of the gain change of the power amplifier, and simulates the time change through temperature change, thereby solving the problem of non-convergence and slow simulation speed caused by the need for scanning time in the existing transient simulation scheme. Therefore, the present application effectively improves the accuracy of the transient response simulation of the power amplifier and shortens the simulation time. Moreover, the electromagnetic model is used for simulation, which can more truly reflect the transient characteristics of the power amplifier than the existing transient simulation scheme that can only use a pure schematic scheme.

[0084] In order to implement the above method, an embodiment of the present application further provides a transient response simulation device for a power amplifier, and the transient response simulation device for a power amplifier can be specifically integrated in a terminal device such as a mobile phone, a tablet computer, or the like.

[0085] For example, Figure 3 As shown, Figure 3 1 is a schematic diagram of a structure of a transient response simulation device for a power amplifier provided in an embodiment of the present application. The transient response simulation device for a power amplifier may include:

[0086] The determination module 301 is used to determine the temperature value of each stage of the power amplifier in a thermally stable state;

[0087] A simulation module 302, used to define preset variables in a simulation environment, and to simulate the change of the temperature value over time during the operation of the power amplifier through the preset variables;

[0088] A generating module 303, configured to scan the preset variable and generate a curve showing that the gain value of the power amplifier varies with the preset variable;

[0089] The adjustment module 304 is used to calculate the slope of the curve and adjust parameter information in the simulation circuit according to the slope.

[0090] As can be seen from the above, the transient response simulation device of the power amplifier proposed in the embodiment of the present application can determine the temperature value of each stage of the power amplifier in a thermally stable state, define preset variables in the simulation environment, simulate the change of the temperature value over time during the operation of the power amplifier through the preset variables, scan the preset variables, generate a curve of the gain value of the power amplifier changing with the preset variables, calculate the slope of the curve, and adjust the parameter information in the simulation circuit according to the slope. The embodiment of the present application utilizes the change of junction temperature of the power amplifier caused by the change of working time, which in turn affects the characteristics of the gain change of the power amplifier, and simulates the time change through temperature change, thereby solving the problem of non-convergence and slow simulation speed caused by the need for scanning time in the existing transient simulation scheme. Therefore, the present application effectively improves the accuracy of the transient response simulation of the power amplifier and shortens the simulation time.

[0091] All of the above technical solutions can be arbitrarily combined to form optional embodiments of the present application, which will not be described in detail here.

[0092] A person of ordinary skill in the art will appreciate that all or part of the steps in the various methods of the above embodiments may be completed by instructions, or by controlling related hardware through instructions. The instructions may be stored in a computer-readable storage medium and loaded and executed by a processor.

[0093] To this end, an embodiment of the present application provides a computer-readable storage medium, in which a plurality of computer programs are stored, and the computer program can be loaded by a processor to execute the steps in any one of the transient response simulation methods of a power amplifier provided in the embodiment of the present application. For example, the computer program can execute the following steps:

[0094] Determine the temperature value of each stage of the power amplifier die in a thermally stable state;

[0095] Defining preset variables in a simulation environment, and simulating the change of the temperature value over time during the operation of the power amplifier by using the preset variables;

[0096] Scanning the preset variable to generate a curve showing that the gain value of the power amplifier changes with the preset variable;

[0097] The slope of the curve is calculated, and parameter information in the simulation circuit is adjusted according to the slope.

[0098] The specific implementation of the above operations can be found in the previous embodiments, which will not be described in detail here.

[0099] The storage medium may include: a read-only memory (ROM), a random access memory (RAM), a magnetic disk or an optical disk, etc.

[0100] Since the computer program stored in the storage medium can execute the steps in any one of the transient response simulation methods for a power amplifier provided in the embodiments of the present application, the beneficial effects that can be achieved by any one of the transient response simulation methods for a power amplifier provided in the embodiments of the present application can be achieved. For details, please refer to the previous embodiments and will not be repeated here.

[0101] An embodiment of the present application also provides an electronic device, including a memory and a processor, wherein the memory is used to store a computer program, and the processor is used to call and run the computer program from the memory, so that the device equipped with the chip executes the methods in various possible implementation modes as described above.

[0102] For example, the computer device mentioned above may be a terminal device with corresponding functions such as a mobile phone, a tablet computer, a personal computer, a cloud computer, etc. Figure 4 , Figure 4 A schematic diagram of the structure of a computer provided in an embodiment of the present application.

[0103] The computer device 400 may include components such as a memory 401 and a processor 402. Those skilled in the art will appreciate that Figure 4 The computer device structure shown in the figure does not constitute a limitation on the computer device, and may include more or less components than shown in the figure, or combine certain components, or arrange the components differently.

[0104] The memory 401 may be used to store applications and data. The applications stored in the memory 401 include executable codes. The applications may be composed of various functional modules. The processor 402 executes various functional applications and data processing by running the applications stored in the memory 401.

[0105] Processor 402 is the control center of the computer device. It uses various interfaces and lines to connect the various parts of the entire computer device. By running or executing applications stored in memory 401 and calling data stored in memory 401, it executes various functions of the computer device and processes data, thereby monitoring the computer device as a whole.

[0106] In this embodiment, the processor 402 in the computer device will load the executable code corresponding to the process of one or more application programs into the memory 401 according to the following instructions, and the processor 402 will run the application program stored in the memory 401 to execute:

[0107] Determine the temperature value of each stage of the power amplifier die in a thermally stable state;

[0108] Defining preset variables in a simulation environment, and simulating the change of the temperature value over time during the operation of the power amplifier by using the preset variables;

[0109] Scanning the preset variable to generate a curve showing that the gain value of the power amplifier changes with the preset variable;

[0110] The slope of the curve is calculated, and parameter information in the simulation circuit is adjusted according to the slope.

[0111] It is understood that the above scenarios are only examples and do not constitute a limitation on the application scenarios of the technical solutions provided in the embodiments of the present application. The technical solutions of the present application can also be applied to other scenarios. For example, it is known to those skilled in the art that with the evolution of the system architecture and the emergence of new business scenarios, the technical solutions provided in the embodiments of the present application are also applicable to similar technical problems.

[0112] The steps in the method of the embodiment of the present application can be adjusted in order, combined and deleted according to actual needs. The modules in the device of the embodiment of the present application can be combined, divided and deleted according to actual needs.

[0113] In the present application, the same or similar terminology concepts, technical solutions and / or application scenario descriptions are generally described in detail only the first time they appear. When they appear again later, they are generally not repeated for the sake of brevity. When understanding the technical solutions and other contents of the present application, for the same or similar terminology concepts, technical solutions and / or application scenario descriptions that are not described in detail later, reference can be made to the previous related detailed descriptions.

[0114] In the present application, the description of each embodiment has its own emphasis. For parts that are not described or recorded in detail in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0115] The various technical features of the technical solution of the present application can be arbitrarily combined. 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 the present application.

[0116] In the above embodiments, it can be implemented in whole or in part by software, hardware, firmware or any combination thereof. When implemented using software, it can be implemented in whole or in part in the form of a computer program product. The computer program product includes one or more computer instructions. When the computer program instructions are loaded and executed on the computer, the process or function according to the embodiment of the present application is generated in whole or in part. The computer can be a general-purpose computer, a special-purpose computer, a computer network, or other programmable device. The computer instructions can be stored in a computer-readable storage medium, or transmitted from one computer-readable storage medium to another computer-readable storage medium. For example, the computer instructions can be transmitted from a website site, computer, server or data center to another website site, computer, server or data center by wired (e.g., coaxial cable, optical fiber, digital subscriber line) or wireless (e.g., infrared, wireless, microwave, etc.) mode. The computer-readable storage medium can be any available medium that can be accessed by the computer or a data storage device such as a server or data center that includes one or more available media integrated. The available medium can be a magnetic medium (e.g., a floppy disk, a storage disk, a tape), an optical medium (e.g., a DVD), or a semiconductor medium (e.g., a solid-state storage disk Solid State Disk), etc.

[0117] The above is a detailed introduction to the transient response simulation method, device, equipment and storage medium of a power amplifier provided in an embodiment of the present application. Specific examples are used in this article to illustrate the principles and implementation methods of the present application. The description of the above embodiments is only used to help understand the method of the present application and its core idea; at the same time, for technical personnel in this field, according to the idea of ​​the present application, there will be changes in the specific implementation method and application scope. In summary, the content of this specification should not be understood as a limitation on the present invention.

Claims

1. A method for simulating transient response of a power amplifier, characterized in that: include: Determine the temperature value of each stage of the power amplifier die in a thermally stable state; Defining preset variables in a simulation environment, and simulating the change of the temperature value over time during the operation of the power amplifier by using the preset variables; Scan the preset variables to generate a curve showing that the gain value of the power amplifier changes with the preset variables; wherein, a small signal parameter simulation component and a harmonic balance simulation component are added to the simulation circuit, a variable scanning component is created, and the variable scanning component is nested and linked with the small signal parameter simulation component and the harmonic balance simulation component, different preset variables are simulated, and the gain data of the power amplifier corresponding to the different preset variables are extracted from the simulation results, and the curve is drawn according to the different preset variables and the gain data; The slope of the curve is calculated, and parameter information in a simulation circuit is adjusted according to the slope to adjust the transient response of the power amplifier.

2. The transient response simulation method of a power amplifier according to claim 1, characterized in that: The adding of a small signal parameter simulation component and a harmonic balance simulation component in the simulation circuit comprises: Setting a port of a small signal parameter simulation component in the simulation circuit, and setting a frequency range of the small signal parameter simulation component according to the operating frequency of the power amplifier; A harmonic balance simulation component is added, and the harmonic order and excitation signal power of the harmonic balance simulation component are set.

3. The transient response simulation method of a power amplifier as claimed in claim 2, characterized in that: After creating the variable scanning component, the method further includes: Setting a scan start value and a scan end value of the variable scan component according to the operating temperature variation range of the power amplifier; The scanning step size of the variable scanning component is set according to the accuracy of the simulation circuit.

4. The transient response simulation method of a power amplifier as claimed in claim 3, characterized in that: The method further comprises: The variable scanning component transfers the scanned preset variables to the small signal parameter simulation component and the harmonic balance simulation component to complete the simulation analysis of different preset variables.

5. The transient response simulation method of a power amplifier according to claim 1, characterized in that: The step of adjusting parameter information in the simulation circuit according to the slope includes at least one of the following: For a bias circuit, adjusting a bias voltage or current according to the slope to optimize a transient response of the power amplifier; For a matching network, adjusting component values ​​or topology structures according to the slope to optimize the transient response of the power amplifier; For the feedback circuit, the feedback coefficient or feedback mode is adjusted according to the slope to optimize the transient response of the power amplifier.

6. The method for simulating transient response of a power amplifier according to claim 1, wherein: The step of determining the temperature value of each stage of the power amplifier in a thermally stable state comprises: An electromagnetic model of the power amplifier is constructed so that the electromagnetic model performs thermal simulation according to the operating power and ambient temperature of the power amplifier to obtain temperature values ​​of each stage of the power amplifier in a thermally stable state.

7. A transient response simulation device for a power amplifier, characterized in that: include: A determination module, used to determine the temperature value of each stage of the power amplifier in a thermally stable state; A simulation module, used to define preset variables in a simulation environment, and to simulate the change of the temperature value over time during the operation of the power amplifier through the preset variables; A generation module is used to scan the preset variables and generate a curve showing that the gain value of the power amplifier changes with the preset variables; wherein a small signal parameter simulation component and a harmonic balance simulation component are added to the simulation circuit, a variable scanning component is created, and the variable scanning component is nested and linked with the small signal parameter simulation component and the harmonic balance simulation component, different preset variables are simulated, and the gain data of the power amplifier corresponding to the different preset variables are extracted from the simulation results, and the curve is drawn according to the different preset variables and the gain data; The adjustment module is used to calculate the slope of the curve and adjust parameter information in the simulation circuit according to the slope to adjust the transient response of the power amplifier.

8. An electronic device, characterized in that: The electronic device includes a memory and a processor, wherein a computer program is stored in the memory, and the processor executes the steps in the transient response simulation method of a power amplifier as described in any one of claims 1 to 6 by calling the computer program stored in the memory.

9. A computer-readable storage medium, characterized in that: The storage medium stores a plurality of computer programs, which can be loaded by a processor to execute the steps in the method for simulating transient response of a power amplifier as claimed in any one of claims 1 to 6.

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