Multi-band power amplifier synthesis adaptive control method and system

Abstract

The embodiment of the application provides a multi-band power amplifier synthesis adaptive control method and system, and belongs to the electronic information technical field.The method comprises the following steps: obtaining a target frequency band and a target output power in a transmission control instruction, and collecting running state data before frequency band switching; determining initial control parameters, and constructing a frequency band migration cost parameter based on the running state data; correcting the initial control parameters to obtain target control parameters, and determining a loading sequence to execute the target control parameters; after executing the target control parameters, collecting output power parameters and reflected power parameters, and decoupling and correcting the reflected power parameters to obtain equivalent reflected power parameters; constructing a synthesis state evaluation parameter, and adjusting and executing the target control parameters.The scheme of the application introduces a frequency band migration cost correction, a phased and sequential loading, and a reflected power decoupling mechanism, so that multi-power amplifier channels can quickly establish consistent output and stably enter an efficient power synthesis state after frequency band switching.

Description

Technical Field

[0001] This invention relates to the field of electronic information technology, and more specifically to a multi-band power amplifier synthesis adaptive control method and system. Background Technology

[0002] In applications such as electronic warfare transmitters, broadband communication transmitters, and test signal sources, power amplification links typically need to cover multiple discrete frequency bands or wide frequency ranges and switch rapidly between different bands. To meet high power output requirements, a multi-channel power amplifier combined in parallel structure is commonly used in engineering. The target output power is achieved through the coordinated operation of multiple power amplifier units. When operating stably in a single frequency band, each power amplifier channel can achieve good amplitude consistency through pre-calibrated bias parameters and drive power allocation, thereby ensuring synthesis efficiency and output stability.

[0003] However, during multi-band switching, most existing solutions still rely on band-power lookup tables or simple compensation mechanisms, that is, directly calling the corresponding control parameters after switching to the target frequency band. This approach has significant shortcomings in practical applications. The matching networks, electrical characteristics, and power amplifier operating points of different frequency bands vary considerably. At the moment of switching, the output states of each channel often deviate significantly. Historical operating factors such as the thermal accumulation state and load standing wave state of the power amplifier devices before switching will affect the transient response after switching, causing the same target frequency band to exhibit different recovery processes under different switching paths.

[0004] Furthermore, in multi-channel synthesis structures, inconsistencies in the output of each channel not only affect the power of a single channel but also couple to the reflected power through the synthesis network. This results in the measured reflected power simultaneously incorporating both load mismatch and channel inconsistency factors. Existing technologies typically use reflected power directly as the control basis, making it difficult to distinguish its source. This can easily lead to misjudgment as load mismatch during the initial switching phase, resulting in excessive suppression of the drive, which prolongs the recovery time and may even cause fluctuations in synthesis efficiency. Simultaneously, the recovery processes of each channel differ in timing. If control parameters are uniformly and synchronously applied, some channels may overshoot while others lag, further exacerbating output instability.

[0005] Therefore, in multi-band rapid switching scenarios, how to reasonably modify the initial control parameters based on the influence of the operating state before switching, take into account the differences between channels during execution, and be able to distinguish different components in the reflected power, so as to enable each power amplifier channel to quickly enter a stable synthesis state after switching, is an urgent problem to be solved. Summary of the Invention

[0006] The purpose of this invention is to provide a multi-band power amplifier synthesis adaptive control method and system to at least solve the problem of inconsistent power amplifier channel output and distorted reflection power characterization during multi-band switching, which makes it difficult to quickly restore a stable power synthesis state.

[0007] To achieve the above objectives, a first aspect of the present invention provides a multi-band power amplifier synthesis adaptive control method, the method comprising: acquiring a target frequency band and a target output power in a transmit control command, and collecting operating state data before frequency band switching; determining initial control parameters based on the target frequency band and the target output power, and constructing frequency band migration cost parameters based on the operating state data; correcting the initial control parameters based on the frequency band migration cost parameters to obtain target control parameters, and determining a loading order to execute the target control parameters; after executing the target control parameters, acquiring output power parameters and reflection power parameters, and decoupling and correcting the reflection power parameters based on the output power parameters to obtain equivalent reflection power parameters; constructing synthesis state evaluation parameters based on the output power parameters and the equivalent reflection power parameters, and adjusting and executing the target control parameters based on the synthesis state evaluation parameters.

[0008] Optionally, initial control parameters are determined based on the target frequency band and target output power, and frequency band migration cost parameters are constructed based on the operating status data. This includes: finding the initial control parameters for each power amplifier channel according to the target frequency band and target output power based on a preset frequency band-power mapping table, wherein the initial control parameters include the bias control parameters and drive control parameters for each power amplifier channel; extracting the temperature parameters and channel current parameters for each power amplifier channel based on the operating status data, and normalizing the temperature parameters and channel current parameters to obtain thermal state characterization parameters; calculating the mismatch characterization parameters based on the reflection power parameters in the operating status data; and weighting and combining the thermal state characterization parameters, the mismatch characterization parameters, and the frequency difference parameters between the target frequency band and the frequency band before switching to obtain the frequency band migration cost parameters.

[0009] Optionally, the initial control parameters are corrected based on the frequency band migration cost parameters to obtain target control parameters, including: obtaining the bias control parameters and drive control parameters of each power amplifier channel in the initial control parameters, and obtaining the frequency band migration cost parameters; calculating compensation amounts for the bias control parameters and drive control parameters of each power amplifier channel based on the frequency band migration cost parameters to obtain the corresponding bias compensation parameters and drive compensation parameters for each power amplifier channel; correcting the bias control parameters based on the bias compensation parameters to obtain the target bias control parameters for each power amplifier channel, and correcting the drive control parameters based on the drive compensation parameters to obtain the target drive control parameters for each power amplifier channel; and combining the target bias control parameters and the target drive control parameters as the target control parameters.

[0010] Optionally, determining the loading order to execute the target control parameters includes: acquiring the temperature parameters and channel current parameters of each power amplifier channel in the operating status data; constructing thermal hysteresis characterization parameters corresponding to each power amplifier channel based on the temperature parameters and channel current parameters of each power amplifier channel, and sorting the thermal hysteresis characterization parameters of each power amplifier channel to obtain the loading order of each power amplifier channel; and executing the target control parameters of each power amplifier channel in stages based on the loading order so that each power amplifier channel establishes a corresponding output state and synthesizer port reflection state.

[0011] Optionally, after executing the target control parameters, the output power parameters and reflection power parameters are collected, including: obtaining the output power parameters of each power amplifier channel and the reflection parameters of the synthesizer port when the corresponding output state and the reflection state of each power amplifier channel are established; and performing synchronous acquisition and time alignment processing on the output power parameters and the reflection power parameters to obtain the output power parameters and reflection power parameters corresponding to the same sampling time.

[0012] Optionally, the reflection power parameter is decoupled and corrected based on the output power parameter to obtain an equivalent reflection power parameter, including: determining the power distribution relationship of each power amplifier channel based on the output power parameter; constructing a discrete characterization parameter based on the power distribution relationship to characterize the degree of output inconsistency of each power amplifier channel; and performing component correction on the reflection power parameter based on the discrete characterization parameter to eliminate the reflection power component introduced by the output inconsistency of each power amplifier channel to obtain the equivalent reflection power parameter.

[0013] Optionally, based on the power distribution relationship, discrete characterization parameters for representing the degree of output inconsistency of each power amplifier channel are constructed, including normalizing the output power parameters of each power amplifier channel to obtain the normalized power component corresponding to each power amplifier channel; calculating the deviation value between each power amplifier channel and the average power component based on each normalized power component to obtain the deviation component corresponding to each power amplifier channel; and performing weighted aggregation processing on each deviation component to obtain discrete characterization parameters for representing the degree of output inconsistency of each power amplifier channel.

[0014] Optionally, constructing composite state evaluation parameters based on the output power parameters and the equivalent reflection power parameters includes: calculating the average power parameters of each power amplifier channel based on the output power parameters of each power amplifier channel, and determining power consistency characterization parameters based on the difference between the output power parameters of each power amplifier channel and the average power parameters; determining mismatch characterization parameters based on the ratio between the equivalent reflection power parameters and a preset reflection threshold; and performing combined calculations based on the power consistency characterization parameters and the mismatch characterization parameters to obtain composite state evaluation parameters.

[0015] Optionally, adjusting and executing the target control parameters based on the synthesized state evaluation parameters includes: comparing the synthesized state evaluation parameters with a preset evaluation threshold to determine the control adjustment direction for each power amplifier channel; calculating the adjustment amount for the bias control parameter and drive control parameter in the target control parameters of each power amplifier channel based on the control adjustment direction to obtain the adjusted control parameters for each power amplifier channel; and re-executing load control for each power amplifier channel based on the adjusted control parameters to change the output power state and synthesizer port reflection state of each power amplifier channel, so that each power amplifier channel enters the synthesized output state corresponding to the synthesized state evaluation parameters.

[0016] A second aspect of the present invention provides a multi-band power amplifier synthesis adaptive control system, the system comprising: a data acquisition unit, configured to acquire the target frequency band and target output power in the transmit control command, and acquire operating status data before frequency band switching; a cost parameter construction unit, configured to determine initial control parameters based on the target frequency band and target output power, and construct frequency band migration cost parameters based on the operating status data; a first execution unit, configured to correct the initial control parameters based on the frequency band migration cost parameters to obtain target control parameters, and determine the loading order to execute the target control parameters; a correction unit, configured to acquire output power parameters and reflection power parameters after executing the target control parameters, and decouple and correct the reflection power parameters based on the output power parameters to obtain equivalent reflection power parameters; and a second execution unit, configured to construct synthesis state evaluation parameters based on the output power parameters and the equivalent reflection power parameters, and adjust and execute the target control parameters based on the synthesis state evaluation parameters.

[0017] Through the above technical solution, the present invention introduces operating status data and constructs frequency band migration cost parameters before frequency band switching, and makes targeted corrections to the initial control parameters. This enables the power amplifier channels to be closer to the target operating state in the initial stage of switching, reducing deviations caused by heat accumulation and load changes. Combined with the control execution method of loading sequence, it avoids output imbalance caused by simultaneous loading of multiple channels. After execution, the output power parameters and reflection power parameters are collected, and equivalent reflection power parameters are obtained through decoupling correction, which can effectively weaken the influence of inconsistent channel output on reflection characterization, making the reflection information more realistically reflect the load state. Furthermore, based on the output power parameters and equivalent reflection power parameters, a composite state evaluation parameter is constructed, and the target control parameters are adjusted and executed accordingly, so that each power amplifier channel gradually converges to a consistent output state, thereby achieving the stable establishment of the power synthesis state after multi-band switching.

[0018] Other features and advantages of the embodiments of the present invention will be described in detail in the following detailed description section. Attached Figure Description

[0019] The accompanying drawings are provided to further illustrate embodiments of the present invention and form part of the specification. They are used together with the following detailed description to explain the embodiments of the present invention, but do not constitute a limitation thereof. In the drawings: Figure 1 This is a flowchart of the steps of a multi-band power amplifier synthesis adaptive control method provided in one embodiment of the present invention; Figure 2 This is a timing diagram of the phased sequential loading of multiple power amplifier channels provided in one embodiment of the present invention; Figure 3 This is a system structure diagram of a multi-band power amplifier synthesis adaptive control system provided in one embodiment of the present invention; Figure 4 This is an internal structural diagram of a computer device provided in one embodiment of the present invention. Detailed Implementation

[0020] The specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are for illustration and explanation only and are not intended to limit the present invention.

[0021] like Figure 1 As shown, embodiments of the present invention provide a multi-band power amplifier synthesis adaptive control method, the method comprising: Step S1: Obtain the target frequency band and target output power from the transmit control command, and collect the operating status data before the frequency band switching.

[0022] Specifically, the transmit control command serves as the starting point for the entire control process, indicating the operating frequency band the power amplifier system needs to switch to and the corresponding target output power. The transmit control command can be generated by a higher-level scheduling unit, such as an electronic warfare mission control module, a communication waveform control module, or a frequency agility control module, or it can be automatically generated by the local controller based on a preset operating mode. The command includes at least frequency band identification information and power setting information. The frequency band identification information is used to limit the current target operating frequency range, and the power setting information is used to limit the output power level or target power value. In some specific implementations, the target output power can be given in discrete increments, such as 20W, 50W, or 100W, or it can be represented as a continuous numerical value.

[0023] Simultaneously with acquiring the transmit control command, the operating status data of the power amplifier system before frequency band switching is collected. This operating status data originates from the monitoring channels within the power amplifier system, including but not limited to temperature detection units, current detection units, and reflection power detection units at the synthesizer port for each power amplifier channel. Temperature parameters characterize the current thermal state of each power amplifier channel and can be obtained by temperature sensors attached to the power amplifier devices or heat dissipation structures. Channel current parameters reflect the conduction level or operating load state of each power amplifier channel and are generally obtained by sampling the drain current or supply current; reflection power parameters are obtained through a directional coupler located at the synthesizer output terminal and reflect the current reflection status at the output terminal.

[0024] To ensure consistency in subsequent calculations, the operational status data is preferably collected within a preset time window before the frequency band switching action is triggered. For example, continuous sampling is performed within a few milliseconds before the switching command is issued, and data from stable intervals is selected as valid input. In a multi-channel power amplifier structure, the operational status data of each power amplifier channel is collected and stored separately to maintain the independence of channel-level data. The aforementioned transmit control command and operational status data together constitute the basic input for subsequent control parameter determination and correction, including both the target operating requirements and the current actual state of the system, thereby providing necessary data support for the construction of subsequent frequency band migration costs.

[0025] Step S2: Determine the initial control parameters based on the target frequency band and target output power, and construct the frequency band migration cost parameters based on the operating status data.

[0026] Specifically, initial control parameters are determined based on the target frequency band and target output power, and frequency band migration cost parameters are constructed based on the operating status data. This includes: finding the initial control parameters for each power amplifier channel according to the target frequency band and target output power based on a preset frequency band-power mapping table, wherein the initial control parameters include the bias control parameters and drive control parameters for each power amplifier channel; extracting the temperature parameters and channel current parameters for each power amplifier channel based on the operating status data, and normalizing the temperature parameters and channel current parameters to obtain thermal state characterization parameters; calculating the mismatch characterization parameters based on the reflection power parameters in the operating status data; and weighting and combining the thermal state characterization parameters, the mismatch characterization parameters, and the frequency difference parameters between the target frequency band and the frequency band before switching to obtain the frequency band migration cost parameters.

[0027] In this embodiment of the invention, the frequency band-power mapping table is typically obtained through offline calibration in engineering. It records a set of control parameter combinations that enable stable operation of the power amplifier for different frequency bands and power levels. This mapping table can be understood as a two-dimensional or multi-dimensional index structure, with the frequency band identifier and power level as inputs, and the bias control parameters and drive control parameters corresponding to each power amplifier channel as outputs. In a multi-channel parallel integrated architecture, this mapping table is often stored separately for each channel, allowing for pre-compensation for device differences between different channels.

[0028] While relying solely on the mapping table can meet output requirements under steady-state conditions, the system state exhibits significant path dependence in frequency band switching scenarios. The temperature distribution, current load, and output reflection state before switching all influence the transient response after switching. Therefore, it is necessary to introduce operational state data for correction after obtaining the initial control parameters. In this embodiment, temperature parameters and channel current parameters are selected as thermal state characterization quantities. These two types of parameters reflect the device state from the perspectives of heat accumulation and conduction degree, respectively. Temperature parameters are typically obtained from a temperature sensor adjacent to the power amplifier device, while channel current parameters can be obtained from a current sampling unit in the power supply circuit.

[0029] Considering the numerical differences between different channels and with different dimensions, the above parameters need to be normalized before participating in the combined calculation to make them comparable. The normalization method can be set according to the actual calibration range. For example, the maximum allowable temperature or maximum current of the equipment can be used as a reference value to map the current value of each channel to a unified dimensionless range. The normalized temperature and current parameters are further combined to form thermal state characterization parameters, which are used to reflect the overall thermal load level of the current system.

[0030] Besides thermal conditions, the reflected power parameter is used to characterize the matching status at the output. A higher reflected power indicates a more significant load mismatch and a greater impact on the power amplifier's output stability. Based on the reflected power parameter in the operating data, a mismatch characterization parameter can be constructed. This parameter is used in subsequent combinations to characterize the impact of load factors on switching behavior.

[0031] The greater the difference between the target frequency band and the original frequency band, the more significant the changes in the power amplifier's operating point and matching network, and the greater the need to adjust the control parameters. Therefore, it is necessary to incorporate the frequency difference parameter into the comprehensive evaluation. The frequency difference can be represented by the difference or relative proportion between the center frequency of the target frequency band and the center frequency of the original frequency band.

[0032] Based on this, the thermal state characterization parameters, mismatch characterization parameters, and frequency difference parameters are weighted and combined to obtain the frequency band migration cost parameter. This parameter is used to quantify the degree of deviation of the current switching behavior from the ideal steady-state conditions; the larger the value, the greater the need for correction of the initial control parameters. In this way, the initial control parameters are no longer fixed lookup table results, but rather a starting point for dynamic adjustment based on real-time status.

[0033] In one specific embodiment, the temperature parameters and channel current parameters of each power amplifier channel are normalized: ; in, Indicates the first Temperature parameters of each power amplifier channel Indicates the first Channel current parameters of each power amplifier channel. and These represent the preset reference maximum values ​​for the corresponding parameters. and This is the result after normalization.

[0034] Thermal state characterization parameters are constructed based on the normalization results: ; in, Indicates the number of power amplifier channels. and , which is a weighting coefficient used to adjust the contribution ratio of temperature and current to the thermal state.

[0035] For the mismatch characterization parameters, the ratio of reflected power to a preset reference value can be used: ; in, These are the currently collected reflection power parameters. The preset reference reflection power threshold is used. The frequency difference parameter can be expressed as: ; in, The center frequency of the target frequency band. To switch the center frequency of the previous frequency band, This is the normalized reference frequency.

[0036] Finally, the frequency band migration cost parameters can be obtained through weighted combination: ; in, For frequency band migration cost parameters, , , This is a weighting coefficient that satisfies preset constraints. This parameter serves as the input for subsequent adjustments to the initial control parameters, ensuring that the control process balances target requirements with the current system state.

[0037] Step S3: Correct the initial control parameters based on the frequency band migration cost parameters to obtain the target control parameters, and determine the loading order to execute the target control parameters.

[0038] Specifically, the process of correcting the initial control parameters based on the frequency band migration cost parameters to obtain target control parameters includes: obtaining the bias control parameters and drive control parameters of each power amplifier channel in the initial control parameters, and obtaining the frequency band migration cost parameters; calculating compensation amounts for the bias control parameters and drive control parameters of each power amplifier channel based on the frequency band migration cost parameters, to obtain the corresponding bias compensation parameters and drive compensation parameters for each power amplifier channel; correcting the bias control parameters based on the bias compensation parameters to obtain the target bias control parameters for each power amplifier channel, and correcting the drive control parameters based on the drive compensation parameters to obtain the target drive control parameters for each power amplifier channel; and combining the target bias control parameters and the target drive control parameters as the target control parameters.

[0039] Furthermore, determining the loading order to execute the target control parameters includes: acquiring the temperature parameters and channel current parameters of each power amplifier channel from the operating status data; constructing thermal hysteresis characterization parameters corresponding to each power amplifier channel based on the temperature parameters and channel current parameters of each power amplifier channel, and sorting the thermal hysteresis characterization parameters of each power amplifier channel to obtain the loading order of each power amplifier channel; and executing the target control parameters of each power amplifier channel in stages based on the loading order, so that each power amplifier channel establishes a corresponding output state and synthesizer port reflection state.

[0040] In this embodiment of the invention, the initial control parameters are derived from a frequency band-power mapping table, which is essentially a configuration of control quantities under ideal steady-state conditions. In multi-frequency band switching scenarios, due to different switching paths, thermal states, and mismatch degrees, directly using these initial control parameters often makes it difficult to achieve the desired output state in a short time. Therefore, introducing a frequency band migration cost parameter to correct the initial control parameters is a key means of incorporating the system's historical state into the current control decision.

[0041] In practical implementation, the initial control parameters can be decomposed into two categories: bias control parameters and drive control parameters. Bias control parameters primarily affect the operating point of the power amplifier devices, influencing their conduction state and linear range; drive control parameters, on the other hand, control the input signal power or excitation intensity, directly affecting the output power level. Since they have different action paths in the control chain, it is more reasonable to handle them separately during the correction process.

[0042] The band migration cost parameter reflects the degree of deviation under the current switching conditions; the larger the value, the more significant the difference between the current state and the steady state of the target frequency band. Based on this parameter, compensation amounts for the bias control parameters and drive control parameters can be constructed. The calculation of the compensation amount can be understood as an adjustment of the initial control parameters, the direction and magnitude of which are determined by the band migration cost parameter. In practical applications, different compensation weights can be set for different channels to accommodate individual device differences.

[0043] For example, for the first Each power amplifier channel, its bias compensation parameters and drive compensation parameters can be expressed as follows: ; in, Indicates the first Offset compensation parameters for each power amplifier channel. This indicates the corresponding drive compensation parameters. For frequency band migration cost parameters, and This is the compensation coefficient for this channel. In this way, different channels can obtain different compensation amounts under the same migration cost.

[0044] After correcting the initial control parameters based on the compensation parameters, the target bias control parameters for each power amplifier channel can be obtained. and target drive control parameters : ; in, and These are the bias control parameters and drive control parameters in the initial control parameters, respectively. Through the above modifications, the control parameters have been partially compensated for the effects of thermal conditions, mismatch conditions, and frequency band changes before execution.

[0045] After parameter correction, directly applying the target control parameters to all power amplifier channels simultaneously is not ideal in engineering practice. In multi-channel power amplifier structures, the thermal recovery speed and response characteristics of each channel differ. If applied synchronously, some channels may reach higher outputs first, while others lag behind, creating an imbalance in the synthesis network and affecting overall output stability. Therefore, this implementation introduces a mechanism for determining the loading order and performing phased execution.

[0046] The loading order depends on the current thermal state of each channel. Temperature and channel current parameters can be used to characterize the degree of heat accumulation and load conditions of each channel. Thermal hysteresis characterization parameters are constructed based on these two types of parameters, which can be understood as a quantitative description of the "recovery difficulty" of each channel. Channels with higher thermal hysteresis recover relatively slowly and should be given a smoother control strategy during loading. The thermal hysteresis characterization parameters are constructed in the following form: ; in, Indicates the first Thermal hysteresis characterization parameters for each power amplifier channel and These are the temperature parameters and channel current parameters for the channel, respectively. and For the corresponding normalized reference value, and This is the weighting coefficient. This parameter allows you to sort the channels according to their numerical values, thus determining the loading order.

[0047] In the sorting results, channels with smaller thermal hysteresis parameters are loaded with the target control parameters first, while channels with larger thermal hysteresis parameters are loaded later. This order reflects the response capability of each channel in the current state, making the loading process more consistent with the actual dynamic characteristics of the system.

[0048] During execution, the target control parameters are loaded in stages according to the loading order. Staged execution can be achieved by dividing the time window or grouping channels. For example, in the first stage, only some channels are loaded with the target control parameters, allowing their output to be gradually established. In subsequent stages, the other channels are loaded sequentially. For channels that have not yet been loaded, their drive control parameters can be restricted to prevent them from participating in synthesis before they are fully prepared.

[0049] Through the aforementioned loading sequence and phased execution strategy, the output establishment process of each power amplifier channel exhibits an orderly progression. The output power state is gradually established, and the reflection state of the synthesizer port is also established accordingly, providing a stable foundation for subsequent acquisition of output power and reflection power parameters. This execution process avoids the instability caused by abrupt loading and provides more representative input data for subsequent decoupling correction and state evaluation.

[0050] In one specific implementation, such as Figure 2 The phased loading and execution process is illustrated using a four-channel power amplifier synthesis as an example. The target frequency band is set, and the corresponding target output power is a preset value. Upon receiving the transmit control command, the system first performs initialization control on each power amplifier channel. During Phase I, target control parameters are loaded only on Ch1 (the first power amplifier channel). The normalized drive / bias load level of Ch1 gradually increases from 0 to approximately 0.65, and then enters a slow adjustment state near the end of the phase.

[0051] exist Upon entering Phase II, based on the predetermined loading sequence, target control parameters are applied to Ch2 (the second power amplifier channel). The loading level of Ch2 gradually increases from 0 to approximately 0.64, while Ch1 remains at its current level with minor adjustments. Upon entering Phase III, load control is applied to Ch3 (the third power amplifier channel), increasing Ch3's load from 0 to approximately 0.60, while the remaining channels remain in the established state. After entering stage IV, a load is applied to Ch4 (the 4th power amplifier channel), and Ch4 gradually increases from 0 to about 0.55, while the aforementioned channels continue to converge toward the target consistency level.

[0052] exist to During the stable phase, the normalized drive / bias loading levels of each power amplifier channel gradually converge to a uniform level of approximately 0.70, thus forming a stable multi-channel synthesized output state. Through this phased and sequential loading method, each channel establishes its output in different stages, avoiding output imbalance caused by simultaneous loading.

[0053] Step S4: After executing the target control parameters, the output power parameters and reflection power parameters are collected, and the reflection power parameters are decoupled and corrected based on the output power parameters to obtain the equivalent reflection power parameters.

[0054] Specifically, after executing the target control parameters, the output power parameters and reflection power parameters are collected, including: obtaining the output power parameters of each power amplifier channel and the reflection parameters of the synthesizer port when the corresponding output state and reflection state of each power amplifier channel are established; and performing synchronous acquisition and time alignment processing on the output power parameters and the reflection power parameters to obtain the output power parameters and reflection power parameters corresponding to the same sampling time.

[0055] Furthermore, the reflection power parameter is decoupled and corrected based on the output power parameter to obtain an equivalent reflection power parameter, including: determining the power distribution relationship of each power amplifier channel based on the output power parameter; constructing a discrete characterization parameter based on the power distribution relationship to characterize the degree of output inconsistency of each power amplifier channel; and performing component correction on the reflection power parameter based on the discrete characterization parameter to eliminate the reflection power component introduced by the output inconsistency of each power amplifier channel, thereby obtaining the equivalent reflection power parameter.

[0056] Furthermore, based on the power distribution relationship, discrete characterization parameters for representing the degree of output inconsistency of each power amplifier channel are constructed, including: normalizing the output power parameters of each power amplifier channel to obtain the normalized power component corresponding to each power amplifier channel; calculating the deviation value between each power amplifier channel and the average power component based on each normalized power component to obtain the deviation component corresponding to each power amplifier channel; and performing weighted aggregation on each deviation component to obtain discrete characterization parameters for representing the degree of output inconsistency of each power amplifier channel.

[0057] In this embodiment of the invention, in actual engineering implementation, the output power parameters of each power amplifier channel can be obtained through a power detection unit arranged on the output path of each channel. This detection unit can be a directional coupler with a detection circuit or an integrated power detection chip, and its output is a voltage or digital quantity proportional to the actual output power of the channel. The reflected power parameters of the synthesizer port are usually obtained through a directional coupler set at the output end of the synthesizer network. The reflected port signal is processed by detection to form a corresponding reflected power characterization value. Since the signals of each channel in the multi-channel synthesizer structure are superimposed in the synthesizer network, the reflected power includes not only the reflection caused by load mismatch, but also the coupled reflection component introduced by the inconsistency of amplitude and phase of each channel.

[0058] To ensure the correspondence between data from different measurement channels, synchronous acquisition and time alignment are required when collecting output power and reflected power parameters. This can be achieved by using a unified sampling clock or by adding timestamps to the sampled data, ensuring that the output power and reflected power data from each channel correspond to the same sampling time. This process avoids data deviations caused by sampling delays or asynchrony, thereby improving the accuracy of subsequent calculations. In a multi-channel system, the output power data from all channels can be acquired within the same sampling period and bound to the reflected power data acquired within that period to form a complete set of observation data.

[0059] After obtaining the synchronized output power and reflection power parameters, the reflection power parameter needs to be decoupled and corrected. In traditional methods, the reflection power is usually directly used to determine the load matching status. However, in multi-channel synthesis scenarios, this reflection power is actually the result of multiple factors superimposed. Using only this value as the control basis can easily misjudge reflections caused by channel inconsistency as load mismatch, thus causing the control strategy to deviate from the actual requirements. Therefore, this implementation introduces a decoupling mechanism based on the output power parameter to perform component correction on the reflection power parameter.

[0060] The first step in decoupling correction is to determine the power distribution relationship between each power amplifier channel based on the output power parameters. The power distribution relationship describes the proportion of each channel's output in the overall output, and its changes reflect the degree of consistency between channels. In practical implementation, the output power of each channel can be normalized to convert it into dimensionless power components. For example, for the first... Each power amplifier channel has its normalized power component expressed as: ; in, Indicates the first Output power parameters of each channel This refers to the number of power amplifier channels. This represents the normalized power components. This process maps the power relationships between different channels to a unified scale, facilitating subsequent comparisons.

[0061] After obtaining the power distribution relationship, discrete characterization parameters can be constructed to represent the degree of inconsistency in the output of each power amplifier channel. These parameters reflect the degree of deviation of the output power of each channel from the average distribution. First, the average power component is calculated: ; Then, the deviation components of each channel are calculated: ; The larger the absolute value of the deviation component, the more significant the deviation of the channel's output from the average level. To comprehensively reflect the inconsistency of all channels, the deviation components can be weighted and aggregated, for example: ; in, Represents discrete characterization parameters. This represents the weighting coefficient for each channel, which can be set according to the channel's importance or device characteristics. This discrete characterization parameter is used to quantify the impact of output inconsistencies between channels on the overall system state.

[0062] After obtaining the discrete characterization parameters, they are incorporated into the correction process for the reflection power parameters. The reflection power parameters can be understood as a combined quantity composed of load mismatch and channel inconsistency components. Using the discrete characterization parameters, the reflection impact introduced by channel inconsistency can be estimated and mitigated, thus obtaining equivalent reflection power parameters that more closely approximate the actual load condition. In one implementation, the correction can be performed in the following form: ; in, The equivalent reflection power parameter, These are the original reflection power parameters. For discrete characterization parameters, Total output power This is a scaling factor used to adjust the effect of dispersion on reflection correction. By subtracting the portion introduced by channel inconsistency from the original reflected power, an equivalent reflected power that better reflects the load mismatch is obtained.

[0063] This equivalent reflection power parameter is used as an important input in the subsequent control process. Its value change more directly corresponds to the load matching situation, and is no longer affected by the inconsistency of multi-channel output. As a result, the system can obtain a more stable and reliable reflection characterization under complex conditions after multi-band switching, providing a basis for subsequent synthetic state evaluation and control parameter adjustment.

[0064] Step S5: Construct synthetic state evaluation parameters based on the output power parameters and the equivalent reflection power parameters, and adjust and execute the target control parameters based on the synthetic state evaluation parameters.

[0065] Specifically, constructing synthetic state evaluation parameters based on the output power parameters and the equivalent reflection power parameters includes: calculating the average power parameters of each power amplifier channel based on the output power parameters of each power amplifier channel, and determining power consistency characterization parameters based on the difference between the output power parameters of each power amplifier channel and the average power parameters; determining mismatch characterization parameters based on the ratio between the equivalent reflection power parameters and a preset reflection threshold; and performing combined calculations based on the power consistency characterization parameters and the mismatch characterization parameters to obtain synthetic state evaluation parameters.

[0066] Furthermore, adjusting and executing the target control parameters based on the synthesized state evaluation parameters includes: comparing the synthesized state evaluation parameters with a preset evaluation threshold to determine the control adjustment direction for each power amplifier channel; calculating the adjustment amount for the bias control parameter and drive control parameter in the target control parameters of each power amplifier channel based on the control adjustment direction to obtain the adjusted control parameters for each power amplifier channel; and re-executing load control for each power amplifier channel based on the adjusted control parameters to change the output power state and synthesizer port reflection state of each power amplifier channel, so that each power amplifier channel enters the synthesized output state corresponding to the synthesized state evaluation parameters.

[0067] In this embodiment of the invention, power consistency characterization parameters are constructed based on the output power parameters of each power amplifier channel. A fundamental requirement of a multi-channel combining structure is that the output of each channel is as balanced as possible; otherwise, even if the total output power meets the requirements, additional losses or unstable factors will be introduced into the combining network. To characterize this degree of balance, the average output power of each channel can be calculated first: ; in, Indicates the first Output power parameters of each power amplifier channel Here, represents the number of channels, and represents the average power parameter. Then, the deviation of each channel's output power from the average value is used as the basis for a consistency measure. To avoid positive and negative deviations canceling each other out, they can be summarized using absolute deviation or squared deviation, for example: ; in, This represents a power consistency parameter; the smaller the value, the closer the output of each channel is to the average level, and the better the consistency. In some implementations, weighting coefficients can be introduced to weight the deviations of different channels to accommodate differences in channel capabilities or structural layout.

[0068] After obtaining the power consistency characterization parameters, mismatch characterization parameters are constructed by combining them with the equivalent reflected power parameters. The equivalent reflected power parameters, obtained in the previous stage through decoupling correction, primarily reflect the load matching state. To facilitate combination with the power consistency characterization parameters, they can be normalized with a preset reflection threshold to form dimensionless mismatch characterization parameters. For example: ; in, The equivalent reflection power parameter, To preset the reflection threshold, This represents the mismatch characterization parameter. When... When the value is close to or exceeds 1, it indicates that the reflection level is close to or exceeds the system's allowable range, and control adjustments are required.

[0069] Based on the two characterization parameters mentioned above, a composite state evaluation parameter is obtained through combined calculation. This evaluation parameter comprehensively reflects the current system state in terms of both power consistency and load matching. In specific implementations, a weighted combination method can be used: ; in, Indicates the parameters for synthesized state evaluation. and This is a weighting factor used to adjust the proportion of influence of power consistency and mismatch in the overall evaluation. The weighting factor can be set according to the specific application scenario; for example, in scenarios with high requirements for output stability, it can be increased. The weight; in scenarios with high load protection requirements, it can improve The weight.

[0070] After obtaining the synthesis state evaluation parameters, they are compared with preset evaluation thresholds to determine whether the current state meets the requirements for stable synthesis. The evaluation thresholds can be set according to system design specifications, such as the allowable power deviation range and reflection power range. During the comparison process, not only the overall state can be judged, but also the control adjustment direction for each channel can be determined by considering the local deviations of each channel.

[0071] Specifically, when the synthesized state evaluation parameters exceed a preset threshold, it indicates that the current system has not yet reached a stable synthesized state, and the target control parameters need to be corrected. During the correction process, two paths are still used: bias control parameters and drive control parameters. Bias control parameters are mainly used to adjust the power amplifier's operating point, suitable for improving the linear range or suppressing overdrive. Drive control parameters are used to directly adjust the output power level. Based on the deviation direction of each channel in the power consistency characterization parameters, it can be determined whether the corresponding channel needs to increase or decrease its output, thus determining the adjustment direction of the drive control parameters. Simultaneously, combined with mismatch characterization parameters, the overall drive level can be constrained to avoid further increasing the output under high reflection conditions.

[0072] In one specific embodiment, for the first Each channel has an adjustment direction determined by its output power deviation, for example: ; when When the output of the channel is above average, the drive control parameters can be appropriately reduced; when At this time, the drive control parameters can be increased. The adjustment amount can be expressed as: ; in, The adjustment amount of the drive control parameters, This is for adjusting the coefficients. Similarly, the bias control parameters can also be fine-tuned according to the overall state. For example, when the mismatch characterization parameters are high, the bias can be appropriately reduced to decrease device stress.

[0073] After obtaining the adjusted control parameters, the loading control is re-executed for each power amplifier channel. This loading process can follow the loading sequence determined in the previous stage, or the sequence can be re-evaluated if necessary. During execution, the output power state and synthesizer port reflection state of each channel will change with the control parameters, thus forming a new system state.

[0074] In multi-band switching scenarios, the original problems mainly manifested in the inconsistency of the output of each channel after switching and the difficulty in accurately representing the load state by the reflected power. Through the above-mentioned adjustment process based on the synthetic state evaluation parameters, the output of each channel gradually converges to the average level, the power deviation between channels is compressed, and the amplitude inconsistency problem in the multi-channel synthetic structure is alleviated.

[0075] Meanwhile, since the reflected power has been decoupled and corrected in the previous stage, the synthesized port reflection state in the new system state better reflects the actual load matching situation, and is no longer mainly affected by channel inconsistency. In this state, the correspondence between the output power distribution and the reflected power tends to be stable, giving the system a clearer basis for adjustment during subsequent control or maintenance, thereby reducing the possibility of power fluctuations and misjudged reflections after frequency band switching.

[0076] In another implementation, after each power amplifier channel completes the loading of the target control parameters and enters the stable phase, the bias control parameters are kept unchanged, and a small periodic disturbance of preset amplitude is applied to the drive control parameters of each power amplifier channel, so that the output power of each channel generates controllable fluctuations within a small range; during this disturbance process, the change in the reflection power parameter of the synthesizer port is collected synchronously, and based on the corresponding change relationship between the output power parameter and the reflection power parameter, a phase consistency characterization parameter is constructed to characterize the coupling sensitivity between channels.

[0077] Furthermore, based on the phase consistency characterization parameters, the relative phase deviation trend of each power amplifier channel during the synthesis process is identified, and the drive control parameters of each power amplifier channel are fine-tuned to further converge the output of each channel towards phase consistency while maintaining amplitude consistency. In this way, the sensitivity of reflected power changes to the coupling characteristics between channels is utilized to indirectly adjust phase consistency.

[0078] In one specific embodiment, the amplitude of the micro-periodic perturbation is set to 1% to 3% of the preset driving amplitude, and the perturbation period is set to multiple sampling periods within a preset time window to ensure that the impact of the perturbation on the main output is within a controllable range. Through the above additional implementation method, the overall stability of multi-channel synthesis can be further improved on the basis of the original amplitude consistency control.

[0079] like Figure 3As shown, this invention provides a multi-band power amplifier synthesis adaptive control system. The system includes: a data acquisition unit for acquiring the target frequency band and target output power in the transmit control command, and acquiring operating status data before frequency band switching; a cost parameter construction unit for determining initial control parameters based on the target frequency band and target output power, and constructing frequency band migration cost parameters based on the operating status data; a first execution unit for correcting the initial control parameters based on the frequency band migration cost parameters to obtain target control parameters, and determining the loading order to execute the target control parameters; a correction unit for acquiring output power parameters and reflection power parameters after executing the target control parameters, and decoupling and correcting the reflection power parameters based on the output power parameters to obtain equivalent reflection power parameters; and a second execution unit for constructing synthesis state evaluation parameters based on the output power parameters and the equivalent reflection power parameters, and adjusting and executing the target control parameters based on the synthesis state evaluation parameters.

[0080] In one embodiment, a computer device is provided, which may be a server, and its internal structure diagram may be as follows: Figure 4 As shown, the computer device includes a processor A01, a network interface A02, memory (not shown), and a database (not shown) connected via a system bus. The processor A01 provides computing and control capabilities. The memory includes internal memory A03 and a non-volatile storage medium A04. The non-volatile storage medium A04 stores an operating system B01, a computer program B02, and a database (not shown). The internal memory A03 provides an environment for the operation of the operating system B01 and the computer program B02 stored in the non-volatile storage medium A04. The network interface A02 is used for communication with external terminals via a network connection. When the computer program B02 is executed by the processor A01, it implements a multi-band power amplifier synthesis adaptive control method.

[0081] Those skilled in the art will understand that all or part of the steps in the methods of the above embodiments can be implemented by a program instructing related hardware. This program is stored in a storage medium and includes several instructions to cause a microcontroller, chip, or processor to execute all or part of the steps of the methods described in the various embodiments of the present invention. The aforementioned storage medium includes various media capable of storing program code, such as a USB flash drive, a portable hard drive, a read-only memory (ROM), a random access memory (RAM), a magnetic disk, or an optical disk.

[0082] The optional embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the embodiments of the present invention are not limited to the specific details described above. Within the scope of the technical concept of the embodiments of the present invention, various simple modifications can be made to the technical solutions of the embodiments of the present invention, and these simple modifications all fall within the protection scope of the embodiments of the present invention. It should also be noted that the various specific technical features described in the above specific embodiments can be combined in any suitable manner without contradiction. To avoid unnecessary repetition, the embodiments of the present invention will not further describe the various possible combinations.

[0083] Furthermore, various different embodiments of the present invention can be combined in any way, as long as they do not violate the spirit of the embodiments of the present invention, they should also be regarded as the content disclosed by the embodiments of the present invention.

Claims

1. A multi-band power amplifier synthesis adaptive control method, characterized in that, The method includes: Obtain the target frequency band and target output power from the launch control command, and collect the operating status data before the frequency band switching; Initial control parameters are determined based on the target frequency band and target output power, and frequency band migration cost parameters are constructed based on the operating status data; The initial control parameters are corrected based on the frequency band migration cost parameters to obtain the target control parameters, and the loading order is determined to execute the target control parameters; After executing the target control parameters, the output power parameters and reflection power parameters are collected, and the reflection power parameters are decoupled and corrected based on the output power parameters to obtain the equivalent reflection power parameters; Based on the output power parameters and the equivalent reflection power parameters, a synthetic state evaluation parameter is constructed, and the target control parameter is adjusted and executed based on the synthetic state evaluation parameter.

2. The multi-band power amplifier synthesis adaptive control method according to claim 1, characterized in that, Initial control parameters are determined based on the target frequency band and target output power, and frequency band migration cost parameters are constructed based on the operating status data, including: Based on the preset frequency band-power mapping table, the initial control parameters of each power amplifier channel are obtained according to the target frequency band and target output power. The initial control parameters include the bias control parameters and drive control parameters of each power amplifier channel. Based on the operating status data, the temperature parameters and channel current parameters of each power amplifier channel are extracted, and the temperature parameters and channel current parameters are normalized to obtain thermal state characterization parameters. Calculate the mismatch characterization parameters based on the reflection power parameters in the operational status data; The frequency band migration cost parameter is obtained by weighting and combining the thermal state characterization parameter, the mismatch characterization parameter, and the frequency difference parameter between the target frequency band and the frequency band before the handover.

3. The multi-band power amplifier synthesis adaptive control method according to claim 2, characterized in that, The initial control parameters are corrected based on the frequency band migration cost parameters to obtain the target control parameters, including: Obtain the bias control parameters and drive control parameters of each power amplifier channel in the initial control parameters, and obtain the frequency band migration cost parameters; Based on the frequency band migration cost parameter, the compensation amount is calculated for the bias control parameter and drive control parameter of each power amplifier channel, respectively, to obtain the bias compensation parameter and drive compensation parameter of each power amplifier channel. The bias control parameters are corrected based on the bias compensation parameters to obtain the target bias control parameters for each power amplifier channel. The drive control parameters are then corrected based on the drive compensation parameters to obtain the target drive control parameters for each power amplifier channel. The target bias control parameter and the target drive control parameter are combined to form the target control parameter.

4. The multi-band power amplifier synthesis adaptive control method according to claim 3, characterized in that, Determining the loading order to execute the target control parameters includes: Obtain the temperature parameters and channel current parameters of each power amplifier channel from the operating status data; Based on the temperature and current parameters of each power amplifier channel, thermal hysteresis characterization parameters for each power amplifier channel are constructed, and the thermal hysteresis characterization parameters of each power amplifier channel are sorted to obtain the loading order of each power amplifier channel. Based on the loading sequence, the target control parameters of each power amplifier channel are executed in stages so that each power amplifier channel establishes a corresponding output state and synthesizer reflection state.

5. The multi-band power amplifier synthesis adaptive control method according to claim 4, characterized in that, After executing the target control parameters, the output power parameters and reflection power parameters are collected, including: After establishing the corresponding output state and synthesizer port reflection state for each power amplifier channel, obtain the output power parameters of each power amplifier channel and the reflection power parameters of the synthesizer port. The output power parameters and the reflection power parameters are synchronously acquired and time-aligned to obtain the output power parameters and reflection power parameters corresponding to the same sampling time.

6. The multi-band power amplifier synthesis adaptive control method according to claim 5, characterized in that, Based on the output power parameters, the reflection power parameters are decoupled and corrected to obtain equivalent reflection power parameters, including: The power distribution relationship of each power amplifier channel is determined based on the output power parameters. Based on the power distribution relationship, discrete characterization parameters are constructed to characterize the degree of inconsistency in the output of each power amplifier channel; The reflection power parameter is modified by component correction based on the discrete characterization parameters to eliminate the reflection power component introduced by the inconsistency of the output of each power amplifier channel, so as to obtain the equivalent reflection power parameter.

7. The multi-band power amplifier synthesis adaptive control method according to claim 6, characterized in that, Based on the power distribution relationship, discrete characterization parameters are constructed to represent the degree of inconsistency in the output of each power amplifier channel, including: The output power parameters of each power amplifier channel are normalized to obtain the normalized power components corresponding to each power amplifier channel. The deviation value between each power amplifier channel and the average power component is calculated based on each normalized power component, and the deviation component of each power amplifier channel is obtained. The deviation components are weighted and aggregated to obtain discrete characterization parameters that characterize the degree of inconsistency in the output of each power amplifier channel.

8. The multi-band power amplifier synthesis adaptive control method according to claim 1, characterized in that, Based on the output power parameters and the equivalent reflection power parameters, a composite state evaluation parameter is constructed, including: The average power parameter of each power amplifier channel is calculated based on the output power parameter of each power amplifier channel, and the power consistency characterization parameter is determined based on the difference between the output power parameter of each power amplifier channel and the average power parameter. The mismatch characterization parameters are determined based on the ratio between the equivalent reflection power parameter and the preset reflection threshold. The combined state evaluation parameters are obtained by combining the power consistency characterization parameters and the mismatch characterization parameters.

9. The multi-band power amplifier synthesis adaptive control method according to claim 8, characterized in that, Adjusting and executing the target control parameters based on the synthetic state evaluation parameters includes: The synthetic state evaluation parameters are compared with preset evaluation thresholds to determine the control adjustment direction for each power amplifier channel. Based on the control adjustment direction, the adjustment amount is calculated for the bias control parameter and drive control parameter in the target control parameters of each power amplifier channel, so as to obtain the adjusted control parameters of each power amplifier channel. Based on the adjusted control parameters, the loading control is re-executed for each power amplifier channel to change the output power state and synthesizer reflection state of each corresponding power amplifier channel, so that each power amplifier channel enters the synthesized output state corresponding to the synthesized state evaluation parameters.

10. A multi-band power amplifier synthesis adaptive control system, characterized in that, The system includes: The data acquisition unit is used to acquire the target frequency band and target output power in the transmission control command, and to acquire the operating status data before the frequency band switching; The cost parameter construction unit is used to determine the initial control parameters based on the target frequency band and the target output power, and to construct the frequency band migration cost parameters based on the operating status data. The first execution unit is configured to correct the initial control parameters based on the frequency band migration cost parameters to obtain the target control parameters, and determine the loading order to execute the target control parameters; The correction unit is used to collect the output power parameters and the reflection power parameters after executing the target control parameters, and to decouple and correct the reflection power parameters based on the output power parameters to obtain the equivalent reflection power parameters. The second execution unit is used to construct synthetic state evaluation parameters based on the output power parameters and the equivalent reflection power parameters, and to adjust and execute the target control parameters based on the synthetic state evaluation parameters.

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