Radio frequency network impedance imbalance self-adaptive compensation method and device, product and medium

Abstract

The invention relates to the technical field of wireless communication, in particular to a radio frequency network impedance imbalance self-adaptive compensation method and device, a product and a medium, when the product is powered on, whether product resonance impedance imbalance exists or not is judged, if yes, network impedance values under the three conditions that an emitter is turned on, a receiver is turned on and both the emitter and the receiver are turned off are obtained, and the product resonance impedance imbalance is obtained; whether radio frequency impedance imbalance exists or not is judged according to the impedance values; and if yes, determining an imbalance compensation adaptive parameter value according to the imbalance direction, and executing impedance compensation operation according to the parameter value, so that the product enters a normal working mode. According to the invention, a set of complete adaptive compensation mechanism is formed, and the communication performance and reliability of a product are effectively improved.

Description

Technical Field

[0001] This application relates to the field of wireless communication technology, and in particular to a method, apparatus, product and medium for adaptive compensation of impedance mismatch in radio frequency networks. Background Technology

[0002] In the field of wireless products, the matching network design at the RF module end is a crucial aspect of ensuring product communication performance. Currently, the industry-standard matching network design approach is based on "fixed scenario parameters." This means that before the product leaves the factory, manufacturers conduct extensive development and debugging to determine a set of optimal RF parameters, thereby achieving fixed impedance matching. Under this design model, the product exhibits specific performance indicators such as active transmit power, receive sensitivity, and frequency offset values ​​in the optimal testing environment. As long as the product meets pre-set standards in the established testing environment after mass production, it can be shipped to the market.

[0003] However, wireless products face complex and ever-changing external environments during actual use. Various factors in the surrounding environment, such as signal obstruction by objects like metal or solid walls, strong magnetic interference, changes in temperature and humidity, and interference from multiple devices operating on the same frequency, can significantly impact the antenna performance, causing sudden changes in key parameters such as impedance and standing wave ratio. Once antenna parameters undergo sudden changes, the signal transmission and reception performance of the wireless product will be greatly reduced, manifesting as abnormal latency during communication, or even frequent network drops, severely affecting the user experience and product reliability. Summary of the Invention

[0004] To overcome the shortcomings of existing technologies, this invention provides a method, apparatus, product, and medium for adaptive compensation of radio frequency network impedance misalignment, which improves the communication performance and reliability of the product.

[0005] A first aspect of this application provides an adaptive compensation method for impedance misalignment in a radio frequency network, the method comprising: When the product is powered on, determine whether there is a product resonant impedance misalignment under the current environment; When it is determined that there is a product resonant impedance misalignment, the current network impedance value with only the transmitter on is obtained as the first network impedance value, the current network impedance value with only the receiver on is obtained as the second network impedance value, and the current network impedance value with both the transmitter and receiver off is obtained as the third network impedance value. Based on the first network impedance value, the second network impedance value, and the third network impedance value, determine whether the product has RF impedance misalignment in the current environment; When it is determined that there is a product RF impedance misalignment, the misalignment compensation adaptation parameter value is determined according to the impedance misalignment direction corresponding to the product RF impedance misalignment. Impedance compensation is performed based on the offset compensation adaptation parameter values ​​to bring the product into normal operating mode.

[0006] In an optional implementation, determining whether product resonant impedance misalignment exists under the current environment includes: The current voltage value of the product is continuously collected under multiple transmitter-on conditions, and the current current value is calculated based on the current voltage value; Calculate the average current of the current value as the final current consumption value; The final current consumption value is compared with a preset current threshold range; When the final current consumption value exceeds the current threshold range, it is determined that there is a product resonant impedance mismatch.

[0007] In an optional implementation, determining whether the product has RF impedance misalignment in the current environment based on the first network impedance value, the second network impedance value, and the third network impedance value includes: Determine whether the deviation of the third network impedance value from the preset reference impedance value is greater than a preset threshold. When it is determined that the deviation of the third network impedance value from the reference impedance value is greater than the preset threshold, it is determined that there is a product RF impedance misalignment. When it is determined that the deviation of the third network impedance value from the reference impedance value is less than the preset threshold, it is determined whether the first network impedance value and the second network impedance value deviate from the reference impedance value synchronously. When it is determined that the first network impedance value and the second network impedance value deviate from the reference impedance value simultaneously, it is determined whether the difference in the magnitude of the deviation of the first network impedance value and the second network impedance value from the reference impedance value is greater than the preset threshold. When the difference between the first network impedance value and the second network impedance value and the reference impedance value is less than the preset threshold, it is determined that there is a product RF impedance mismatch.

[0008] In an optional implementation, the method further includes: Obtain the imaginary part X of the first network impedance value, the second network impedance value, and the third network impedance value; When the imaginary part X < 0, the direction of the impedance misalignment is determined to be capacitive misalignment; When the imaginary part X > 0, the direction of the impedance misalignment is determined to be inductive misalignment.

[0009] In one optional implementation, at least three sets of matching network parameter values ​​corresponding to the impedance misalignment direction are retrieved from a pre-stored database, namely, low matching network parameter values, medium matching network parameter values, and high matching network parameter values.

[0010] In an optional implementation, when the impedance offset direction is determined to be capacitive offset, determining the offset compensation adaptation parameter value based on the impedance offset direction corresponding to the product's RF impedance offset includes: Adjust the capacitance parameter of the capacitive regulator to the low-matching network parameter value, and collect the network impedance value of the product when only the transmitter is on, the network impedance value when only the receiver is on, and the network impedance value when both the transmitter and receiver are off. Adjust the capacitance parameter of the capacitive regulator to the matching network parameter value, and collect the network impedance value of the product when only the transmitter is turned on, the network impedance value when only the receiver is turned on, and the network impedance value when both the transmitter and receiver are turned off. Adjust the capacitance parameter of the capacitive regulator to the high-matching network parameter value, and collect the network impedance value of the product when only the transmitter is turned on, the network impedance value when only the receiver is turned on, and the network impedance value when both the transmitter and receiver are turned off. The optimal network impedance value among all network impedance values ​​is extracted as the offset compensation adaptation parameter value.

[0011] A second aspect of this application provides a radio frequency network impedance offset adaptive compensation device, the device comprising: The offset detection module is used to determine whether the product has a resonant impedance offset under the current environment when the product is powered on. The impedance acquisition module is used to acquire the current network impedance value when only the transmitter is turned on as the first network impedance value, the current network impedance value when only the receiver is turned on as the second network impedance value, and the current network impedance value when both the transmitter and receiver are turned off as the third network impedance value when it is determined that there is a product resonant impedance misalignment. The offset judgment module is also used to determine whether the product has RF impedance offset in the current environment based on the first network impedance value, the second network impedance value and the third network impedance value; The impedance compensation module is used to determine the offset compensation adaptation parameter value according to the impedance offset direction corresponding to the product's RF impedance offset when it is determined that there is an offset offset in the product; and to perform an impedance compensation operation according to the offset compensation adaptation parameter value so that the product can enter the normal working mode.

[0012] A third aspect of this application provides a wireless product including a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor executes the computer program to implement the steps of the radio frequency network impedance misalignment adaptive compensation method.

[0013] A fourth aspect of this application provides a computer-readable storage medium having a computer program stored thereon, which, when executed by a processor, implements the steps of the above-described adaptive compensation method for impedance misalignment in radio frequency networks.

[0014] In summary, the RF network impedance misalignment adaptive compensation method, apparatus, product, and dielectric provided in this application have at least one of the following beneficial effects: 1. When the product is powered on, a preliminary screening is performed to determine if there is any resonant impedance misalignment in the current environment, and to screen for potential impedance-related issues caused by external environmental influences. 2. Because the impact of the external environment on the product impedance may vary under different operating states, when resonant impedance misalignment is confirmed, the current network impedance value is obtained as the first network impedance value when only the transmitter is on, the current network impedance value is obtained as the second network impedance value when only the receiver is on, and the current network impedance value is obtained as the third network impedance value when both the transmitter and receiver are off. By obtaining network impedance values ​​under different operating states (transmit, receive, off), a comprehensive understanding of the product's impedance under different operating modes can be obtained, providing rich data support for accurately determining whether RF impedance misalignment exists.

[0015] Based on the first network impedance value, the second network impedance value, and the third network impedance value, determine whether the product has RF impedance misalignment under the current environment. This step is an accurate judgment of the product's RF impedance state. By comprehensively analyzing the network impedance values ​​under different operating states, errors or special cases that may occur under a single state can be eliminated, more accurately determining whether the product truly has an RF impedance misalignment problem. If RF impedance misalignment exists, it indicates that the external environment has had a substantial impact on the product's RF performance, requiring compensation. 4. When it is determined that RF impedance misalignment exists, determine the offset compensation adaptation parameter value according to the impedance misalignment direction corresponding to the product's RF impedance misalignment. Different impedance misalignment directions require different compensation methods and parameters. By determining the offset direction, appropriate compensation adaptation parameter values ​​can be selected to ensure the effectiveness and accuracy of the compensation operation.

[0016] 5. Perform impedance compensation operation according to the offset compensation adaptation parameter values ​​to bring the product into normal operating mode. By performing impedance compensation operation based on accurately determined offset compensation adaptation parameter values, the impedance state of the product can be adjusted to restore it to a state close to normal operation. This solves the problem of reduced signal transmission and reception performance caused by sudden changes in antenna parameters due to external environment, avoids abnormal delays, frequent network drops, and other issues, and improves product reliability and user experience. Attached Figure Description

[0017] Figure 1This is a schematic flowchart illustrating an adaptive method for impedance misalignment in a radio frequency network according to an embodiment of this application; Figure 2 This is another flowchart illustrating an adaptive method for impedance misalignment in a radio frequency network, as shown in an embodiment of this application. Figure 3 This is a schematic diagram of the architecture of an adaptive system for impedance misalignment of a radio frequency network, as shown in an embodiment of this application. Figure 4 This is a functional block diagram of a radio frequency network impedance offset adaptive device shown in an embodiment of this application; Figure 5 This is a schematic diagram of the structure of a wireless product shown in an embodiment of this application. Detailed Implementation

[0018] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0019] The following will clearly and completely describe the concept, specific structure, and technical effects of the present invention in conjunction with embodiments and accompanying drawings, so as to fully understand the purpose, features, and effects of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, not all of them. Other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are all within the scope of protection of the present invention. Furthermore, all connections / linkages involved in the patent do not simply refer to direct contact between components, but rather to the ability to form a better connection structure by adding or reducing connecting accessories according to specific implementation conditions. The various technical features in this invention can be combined interactively without contradicting each other.

[0020] Reference Figure 1 The diagram shown is a flowchart illustrating an adaptive method for RF network impedance misalignment according to an embodiment of this application. The adaptive method for RF network impedance misalignment includes the following steps.

[0021] S11, when the product is powered on, determine whether there is a product resonant impedance misalignment under the current environment.

[0022] Refer to together Figure 2 When a wireless product is placed in a certain environment, it enters a self-test state upon power-up to determine whether the product's radio frequency is affected by the current environment, resulting in resonant impedance misalignment.

[0023] Refer to together Figure 3The RF network impedance misalignment adaptive system includes an energy monitoring circuit, an impedance detector circuit, a reference threshold determination block, a sudden change direction determination module, an impedance matching database, a capacitance adjustment circuit block, and a wireless SOC microcontroller. These modules work together to achieve adaptive compensation for RF network impedance misalignment. Specifically, the wireless SOC microcontroller (hereinafter referred to as the microcontroller) first turns on the product's RF transmitter and simultaneously activates the product voltage energy detection circuit (i.e., the energy monitoring circuit) to collect the current product voltage value as the current voltage value. In practice, the current voltage value is first statically collected before the RF transmitter is turned on, so that the current transmission power consumption (i.e., the current current magnitude) can be calculated based on the statically collected voltage value, and whether there is an anomaly can be determined based on the current transmission power consumption.

[0024] Based on the collected voltage values, the corresponding current value is calculated using the formula I=U / R. Current values ​​are collected N times consecutively and then processed. In this embodiment, the first current value is removed (to remove the instability of the battery's transient high current operation when the product wakes from sleep mode and the interference of other circuit block start-up transient high current on power consumption determination) and the last current value is removed (to remove the influence of incomplete transmission duration on power consumption determination). The average current is calculated based on the remaining voltage values, i.e., I2+I3…+(I…R). N-1 ) / N-2, outputting a final current consumption value I. a .

[0025] Furthermore, the final current consumption value I a Compare the current consumption value I with a preset current threshold range to determine if it exceeds the current threshold range. If the final current consumption value I... a If the current threshold is not within the range, it is determined that the antenna resonance of the product is misaligned under the current environment, and step S12 is executed.

[0026] If the final flow consumption value I a If the current threshold is within the specified range, the product is determined to have no resonant impedance misalignment under the current environment, and exits the self-test state to enter normal standby state. For example, when the wireless product is a security device, the security device enters normal security monitoring state and does not require environmental self-calibration.

[0027] It should be noted that before the product leaves the factory, tests are conducted on the impedance under normal emission conditions. The current data acquired during the test is used to build a database, and a current threshold range is set based on this database and pre-stored in the microcontroller. Given the individual differences in components, the following example of the current threshold range judgment standard is set: based on the pre-stored current data, when the current deviation is less than ±5mA, the impedance is considered to be in a normal state; when the current deviation is greater than ±5mA, the impedance is considered to be abnormal.

[0028] S12, when it is determined that there is a product resonant impedance misalignment, the current network impedance value when only the transmitter is on is obtained as the first network impedance value, the current network impedance value when only the receiver is on is obtained as the second network impedance value, and the current network impedance value when both the transmitter and receiver are off is obtained as the third network impedance value.

[0029] Refer to together Figure 2 When a product resonant impedance mismatch is detected, that is, an antenna impedance imbalance at the product resonant frequency, the reference threshold mechanism is triggered, and the microcontroller activates the impedance detector circuit to enter the multi-state impedance acquisition mode.

[0030] Specifically, first, a reference impedance value for the resonant frequency is set. The reference impedance value This refers to the network impedance value of the product under the ideal environment and normal parameter conditions as designed, for example, set to 50Ω. The reference impedance value is... Setting the impedance to 50Ω is a global industry consensus reached in engineering practice after balancing power capacity, loss, bandwidth, and process compatibility. Its origin is rooted in transmission line theory, and it has become the optimal choice for process compatibility and system integration cost. For example, chips (RF front-end, power amplifier), feeders / coaxial cables to antennas are all designed based on 50Ω.

[0031] Furthermore, three types of state impedance are acquired using an impedance sensor: State 1: The product transmitter is turned on. The impedance and phase values ​​are obtained through the impedance detection sensor. The current network impedance value is recorded and designated as the first network impedance value. ; State 2: Turn on the product receiver and record the current network impedance value, which will be recorded as the second network impedance value. ; State 3: Turn off the product transmitter and transceiver, putting the product in static mode, and record the current network impedance value as the third network impedance value. .

[0032] S13, based on the first network impedance value, the second network impedance value and the third network impedance value, determine whether the product has RF impedance misalignment in the current environment.

[0033] When collected , and Then, the benchmark threshold is used to compare it with the judgment conditions for product RF impedance misalignment, where the judgment conditions are as follows: Condition 1: The deviation of the third network impedance value from the reference impedance value is greater than a preset threshold (e.g., 10%), that is... ;or Condition 2: The first network impedance value and the second network impedance value deviate from the reference impedance value simultaneously, and the difference between the deviations of the first network impedance value and the second network impedance value from the reference impedance value is less than a preset threshold. At the same time, the deviation of the third network impedance value from the reference impedance value is less than a preset threshold. That is, the condition is met. and Synchronous, and ,and ; When any of the above conditions are met, it is determined that the antenna resonant frequency of the product is out of tune in the current environment, that is, the product's RF impedance is out of tune, and step S14 is executed.

[0034] It should be noted that the preset threshold is set to 10% for the following two reasons: First, the precision of the product's board material and components will cause normal parameter fluctuations of about ±5% in the RF link itself (such as power changes and slight impedance changes caused by temperature drift); Second, if the antenna resonant frequency shifts effectively, its impact on dynamic impedance will usually exceed 8% due to the precision of the components / board material, and the 10% threshold can ensure that such shifts that are sufficient to affect communication performance can be accurately captured, avoiding misjudgment.

[0035] S14, when it is determined that there is a product RF impedance misalignment, determine the misalignment compensation adaptation parameter value according to the impedance misalignment direction corresponding to the product RF impedance misalignment.

[0036] Refer to together Figure 2 The sudden change direction determination circuit is activated to determine whether the current environment is inductive or capacitive imbalance. In step S12, three state impedances have already been collected using an impedance sensor. Impedance Z is a complex number, typically expressed as... Z = R + jX (Where R is the real part and X is the imaginary part), the sign of the imaginary part X reflects the phase direction: Imaginary part X > 0: The corresponding phase is positive (exhibiting sensory characteristics); Imaginary part X < 0: The corresponding phase is negative (exhibiting capacitive characteristics).

[0037] The direction of impedance misalignment is determined according to the following rules: (1) If detected , and If the phase of each antenna is less than -10° (negative deviation), then the impedance misalignment direction is determined to be capacitive misalignment, indicating that the equivalent capacitance of the current antenna is increased due to environmental influences.

[0038] (2) If detection , and If the phase of each antenna is greater than 10° (positive deviation), then the impedance misalignment direction is determined to be inductive misalignment, indicating that the equivalent inductance of the current antenna is increased due to environmental influences.

[0039] When according to , and After determining the current product antenna impedance offset direction (inductive or capacitive offset) based on the phase of the three states, at least three sets of low, medium and high matching network parameter values ​​with corresponding imaginary parts and relative phases are retrieved from the database pre-stored in the microcontroller.

[0040] Specifically, during the product development phase, a network analyzer combined with Smith charts and simulation tools such as ADS is used to conduct extensive testing and verification of matching component parameters for the inductive and capacitive imaginary parts of the product under different impedance phases. These matching component parameters are pre-stored in the microcontroller's database, forming a database containing at least three sets of matching network parameter values ​​for the corresponding imaginary part relative phase: low, medium, and high. During product operation, when it is determined that the product antenna has RF impedance misalignment, and its impedance misalignment direction is determined to be inductive or capacitive, the microcontroller retrieves at least three sets of matching network parameter values ​​for the corresponding imaginary part relative phase from the pre-stored database (i.e., the impedance matching database) based on the impedance misalignment direction. These are the low matching network parameter values, medium matching network parameter values, and high matching network parameter values.

[0041] S15, perform impedance compensation operation according to the offset compensation adaptation parameter value to enable the product to enter normal working mode.

[0042] Refer to together Figure 2 The microcontroller controls the capacitive inductance regulator (including active adjustable capacitor and adjustable inductor) in the matching network through the capacitive inductance regulation circuit block, and sequentially adjusts the capacitor / inductance parameters in the capacitive inductance regulator to each set of matching parameter values ​​retrieved in step S14.

[0043] To facilitate understanding of the inventive concept of the embodiments of this application, the following example uses capacitive inductance offset as the impedance offset direction, and determines the offset compensation adaptation parameter values ​​from three sets of low, medium, and high matching network parameter values. For example, the capacitance parameter corresponding to the low matching network parameter value is... =10pF, the capacitance parameter corresponding to the matching network parameter value is: =20pF, the capacitance parameter corresponding to the high-matching network parameter value is: =30pF.

[0044] Adjusting the capacitance parameters of the capacitive regulator: for each set of capacitance parameter values ​​adjusted, the microcontroller activates the impedance detection circuit to collect data on the product's transmit state (corresponding impedance). ), receiving status (corresponding impedance) ) and static mode (corresponding impedance) The impedance and phase data for these three states. Specifically: (1) Adjust the network parameter values ​​to low and collect data.

[0045] The microcontroller retrieves the low-matching network parameter values ​​(i.e., capacitance parameters) corresponding to the capacitive mismatch from the pre-stored database. =10pF), and adjust the capacitance parameter in the capacitance regulator to this value. After adjustment, the microcontroller controls the RF module to put the product into three states: transmitter-only on, receiver-only on, and both transmitter and receiver off. In each state, the impedance detection circuit is activated to collect the network impedance value of the current state. For example, the network impedance value collected when transmitter-only is on is... =50+j10Ω, the network impedance value collected only when the receiver is turned on is... =45+j8Ω, the network impedance value acquired when both the transmitter and receiver are off is... =48+j9Ω.

[0046] (2) Adjust the network parameter values ​​to match the data and collect data.

[0047] The microcontroller then retrieves the corresponding mid-matching network parameter values ​​(i.e., capacitance parameters) from the database. =20pF), adjust the capacitance parameter of the capacitive regulator to this value. Similarly, control the product in the above three states and collect the corresponding network impedance values. For example, the network impedance value collected when only the transmitter is turned on is =52+j12Ω, the network impedance value collected only when the receiver is turned on is 52+j12Ω. =47+j10Ω, the network impedance value acquired when both the transmitter and receiver are off is... =50+j11Ω.

[0048] (3) Adjust the network parameter values ​​to high matching and collect data.

[0049] The microcontroller then retrieves the high-matching network parameter values ​​(i.e., capacitance parameters) corresponding to the capacitive mismatch from the database. =30pF), adjust the capacitance parameter of the capacitive regulator to this value. Control the product in three states and collect network impedance values. For example, the network impedance value collected when only the transmitter is on is =55+j15Ω, the network impedance value collected only when the receiver is turned on is... =50+j13Ω, the network impedance value acquired when both the transmitter and receiver are off is =53+j14Ω.

[0050] After all the retrieved matching parameters have been adapted and the corresponding impedance and phase data have been obtained through testing, the microcontroller compares and analyzes all the acquired impedance and phase data, extracting the optimal set of parameter values ​​as the final antenna offset compensation adaptation parameter values. During the analysis, not only the magnitude of the network impedance value is considered, but also the impedance characteristics required by the product under different operating conditions. For example, for wireless communication equipment, it is desirable for the network impedance to be as close as possible to the reference impedance value (e.g., 50Ω) in both transmitting and receiving states to reduce signal reflection and loss. Through comparative analysis, it was found that when the capacitance parameter is... The network impedance value acquired when the transmitter is on only at 20pF. =52+j12Ω is closest to the reference impedance value and has the best overall performance. Therefore, the capacitor parameters are... =20pF was determined as the offset compensation adaptation parameter value.

[0051] The microcontroller adapts to the determined offset compensation parameters (capacitor parameters) =20pF), adjust the capacitive inductance regulator again to stabilize the capacitance parameter at this value, completing the compensation for antenna capacitive offset. After compensation is completed, the product automatically exits the current calibration state and enters normal operating mode to perform data transmission and communication with stable RF performance.

[0052] When the impedance misalignment is inductive, adjust the inductance parameter in the capacitive-inductive regulator; the same applies to other cases.

[0053] This application integrates product power-on self-test to determine resonant impedance mismatch, multi-state impedance acquisition, RF impedance mismatch determination based on specific conditions, matching network parameter values ​​retrieved according to the mismatch direction, and offset compensation adaptation parameter values ​​determined by comparative analysis. This forms a radio frequency network impedance mismatch adaptive compensation closed-loop (RF-IMACCL), which can accurately and efficiently detect and compensate for RF network impedance mismatch caused by various factors in different environments. It ensures that the network impedance of the product is as close as possible to the reference value under different operating conditions, reduces signal reflection and loss, and improves the stability and reliability of the product's RF performance.

[0054] The embodiments of this application can be applied to consumer electronics, Internet of Things, industrial communication, automotive electronics, satellite / base station communication and other fields. They are especially suitable for wireless products with extremely high requirements for communication stability in special environments, and can maintain stable radio frequency performance in complex environments.

[0055] Referring to Figure 4, this is a functional block diagram of an adaptive compensation device for RF network impedance misalignment shown in an embodiment of this application.

[0056] In some embodiments, the RF network impedance misalignment adaptive compensation device 40 may include multiple functional modules composed of computer program segments. The computer programs for each program segment of the RF network impedance misalignment adaptive compensation device 40 may be stored in the memory of the wireless product and executed by at least one processor to perform (see details). Figure 1 (Description) This describes the adaptive compensation function for impedance offset in a radio frequency network. Based on its function, it can be divided into multiple functional modules. These modules may include: an offset judgment module 401, an impedance acquisition module 402, and an impedance compensation module 403. The term "module" in this application refers to a series of computer program segments that can be executed by at least one processor and perform a fixed function, stored in memory. In this embodiment, the functions of each module will be detailed in subsequent embodiments.

[0057] The offset judgment module 401 is used to determine whether the product has a resonant impedance offset under the current environment when the product is powered on.

[0058] The impedance acquisition module 402 is used to acquire the current network impedance value when only the transmitter is turned on as the first network impedance value, the current network impedance value when only the receiver is turned on as the second network impedance value, and the current network impedance value when both the transmitter and receiver are turned off as the third network impedance value when it is determined that there is a product resonant impedance misalignment.

[0059] The offset judgment module 401 is also used to determine whether the product has radio frequency impedance offset in the current environment based on the first network impedance value, the second network impedance value and the third network impedance value.

[0060] The impedance compensation module 403 is used to determine the offset compensation adaptation parameter value according to the impedance offset direction corresponding to the product's RF impedance offset when it is determined that there is a product RF impedance offset; and to perform an impedance compensation operation according to the offset compensation adaptation parameter value so that the product enters a normal working mode.

[0061] The offset judgment module 401 is further specifically used for: continuously collecting the current voltage value of the product under multiple transmitter turn-on conditions, and calculating the current current value based on the current voltage value; calculating the average current of the current current value as the final current consumption value; comparing the final current consumption value with a preset current threshold range; and determining that there is a product resonant impedance offset when the final current consumption value exceeds the current threshold range.

[0062] The offset determination module 401 is further specifically configured to: determine whether the deviation of the third network impedance value from a preset reference impedance value is greater than a preset threshold; when it is determined that the deviation of the third network impedance value from the reference impedance value is greater than the preset threshold, determine that there is product RF impedance offset; when it is determined that the deviation of the third network impedance value from the reference impedance value is less than the preset threshold, determine whether the first network impedance value and the second network impedance value deviate from the reference impedance value synchronously; when it is determined that the first network impedance value and the second network impedance value deviate from the reference impedance value synchronously, determine whether the difference between the deviations of the first network impedance value and the second network impedance value from the reference impedance value is greater than the preset threshold; when the difference between the deviations of the first network impedance value and the second network impedance value from the reference impedance value is less than the preset threshold, determine that there is product RF impedance offset.

[0063] The offset determination module 401 is further specifically used to: obtain the imaginary part X of the first network impedance value, the second network impedance value, and the third network impedance value; when the imaginary part X < 0, determine that the impedance offset direction is capacitive offset; when the imaginary part X > 0, determine that the impedance offset direction is inductive offset.

[0064] The impedance compensation module 403 is further specifically used to: retrieve at least three sets of matching network parameter values ​​corresponding to the impedance misalignment direction from a pre-stored database, namely, low matching network parameter values, medium matching network parameter values ​​and high matching network parameter values.

[0065] The impedance compensation module 403 is further specifically configured to: adjust the capacitance parameter of the capacitive regulator to the low matching network parameter value; collect the network impedance value of the product when only the transmitter is on, when only the receiver is on, and when both the transmitter and receiver are off; adjust the capacitance parameter of the capacitive regulator to the medium matching network parameter value; collect the network impedance value of the product when only the transmitter is on, when only the receiver is on, and when both the transmitter and receiver are off; adjust the capacitance parameter of the capacitive regulator to the high matching network parameter value; collect the network impedance value of the product when only the transmitter is on, when only the receiver is on, and when both the transmitter and receiver are off; and extract the optimal network impedance value from all network impedance values ​​as the offset compensation adaptation parameter value.

[0066] It should be understood that the various variations and specific embodiments of the RF network impedance offset adaptive compensation method provided in the above embodiments are also applicable to the RF network impedance offset adaptive compensation device of this embodiment. Through the foregoing detailed description of the RF network impedance offset adaptive compensation method, those skilled in the art can clearly understand the implementation method of the RF network impedance offset adaptive compensation device of this embodiment. For the sake of brevity, it will not be described in detail here.

[0067] See Figure 5 The diagram shown is a schematic representation of the structure of a wireless product according to an embodiment of this application. In a preferred embodiment of this application, the wireless product 5 includes a memory 51, at least one processor 52, and at least one communication bus 53.

[0068] Those skilled in the art should understand that Figure 5 The structure of the wireless product shown does not constitute a limitation of the embodiments of this application. It can be a bus structure or a star structure. The wireless product 5 may also include more or fewer other hardware or software than shown, or different component arrangements.

[0069] In some embodiments, the wireless product 5 is a device capable of automatically performing numerical calculations and / or information processing according to pre-set or stored instructions. Its hardware includes, but is not limited to, microprocessors, application-specific integrated circuits (ASICs), programmable gate arrays (FPGAs), digital processors, and embedded devices. The wireless product 5 may also include user equipment, which includes, but is not limited to, any electronic product capable of human-computer interaction with a user via a keyboard, mouse, remote control, touchpad, or voice control device, such as a personal computer, tablet computer, smartphone, or digital camera.

[0070] In the embodiments provided in this application, it should be understood that the disclosed methods, apparatuses, computer-readable storage media, and wireless product devices can be implemented in other ways. For example, the apparatus embodiments described above are merely illustrative. For instance, the division of modules is only a logical functional division, and in actual implementation, there may be other division methods. For example, multiple components or modules may be combined or integrated into another device, or some features may be ignored or not executed. Furthermore, the displayed or discussed mutual couplings or direct couplings or communication connections may be indirect couplings or communication connections between devices, components, or modules through some interfaces, and may be electrical, mechanical, or other forms.

[0071] The components described as separate parts may or may not be physically separate. The components shown as components may or may not be physical modules; that is, they may be located in one place or distributed across multiple network modules. Some or all of the components can be selected to achieve the purpose of this embodiment according to actual needs.

[0072] Furthermore, the functional modules in the various embodiments of the present invention can be integrated into one processing module, or each component can exist physically separately, or two or more modules can be integrated into one module. The integrated modules described above can be implemented in hardware or as software functional modules.

[0073] If the integrated module is implemented as a software functional module and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present invention, in essence, or the part that contributes to the prior art, or all or part of the technical solution, can be embodied in the form of a software product. This computer software product is stored in a storage medium and includes several instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) 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 USB flash drives, portable hard drives, read-only memory (ROM), random access memory (RAM), magnetic disks, or optical disks.

[0074] It should be noted that, for the sake of simplicity, the foregoing method embodiments are all described as a series of actions. However, those skilled in the art should understand that the present invention is not limited to the described order of actions, because according to the present invention, some steps can be performed in other orders or simultaneously. Furthermore, those skilled in the art should also understand that the embodiments described in the specification are preferred embodiments, and the actions and modules involved are not necessarily essential to the present invention.

[0075] In the above embodiments, the descriptions of each embodiment have different focuses. For parts not described in detail in a certain embodiment, please refer to the relevant descriptions of other embodiments.

[0076] The above is a detailed description of the preferred embodiments of the present invention. However, the present invention is not limited to the embodiments described. Those skilled in the art can make various equivalent modifications or substitutions without departing from the spirit of the present invention. All such equivalent modifications or substitutions are included within the scope defined by the claims of this application.

Claims

1. An adaptive compensation method for impedance misalignment in radio frequency networks, characterized in that, The method includes: When the product is powered on, determine whether there is a product resonant impedance misalignment under the current environment; When it is determined that there is a product resonant impedance misalignment, the current network impedance value with only the transmitter on is obtained as the first network impedance value, the current network impedance value with only the receiver on is obtained as the second network impedance value, and the current network impedance value with both the transmitter and the receiver off is obtained as the third network impedance value. Based on the first network impedance value, the second network impedance value, and the third network impedance value, determine whether the product has RF impedance misalignment in the current environment; When it is determined that there is a product RF impedance misalignment, the misalignment compensation adaptation parameter value is determined according to the impedance misalignment direction corresponding to the product RF impedance misalignment. Impedance compensation is performed based on the offset compensation adaptation parameter values ​​to bring the product into normal operating mode.

2. The adaptive compensation method for RF network impedance misalignment according to claim 1, characterized in that, The determination of whether product resonant impedance misalignment exists under the current environment includes: The current voltage value of the product is continuously collected under multiple transmitter-on conditions, and the current current value is calculated based on the current voltage value; Calculate the average current of the current value as the final current consumption value; The final current consumption value is compared with a preset current threshold range; When the final current consumption value exceeds the current threshold range, it is determined that there is a product resonant impedance mismatch.

3. The adaptive compensation method for RF network impedance misalignment according to claim 1, characterized in that, Determining whether the product has RF impedance misalignment in the current environment based on the first network impedance value, the second network impedance value, and the third network impedance value includes: Determine whether the deviation of the third network impedance value from the preset reference impedance value is greater than a preset threshold. When it is determined that the deviation of the third network impedance value from the reference impedance value is greater than the preset threshold, it is determined that there is a product RF impedance misalignment. When it is determined that the deviation of the third network impedance value from the reference impedance value is less than the preset threshold, it is determined whether the first network impedance value and the second network impedance value deviate from the reference impedance value synchronously. When it is determined that the first network impedance value and the second network impedance value deviate from the reference impedance value simultaneously, it is determined whether the difference in the magnitude of the deviation of the first network impedance value and the second network impedance value from the reference impedance value is greater than the preset threshold. When the difference between the first network impedance value and the second network impedance value and the reference impedance value is less than the preset threshold, it is determined that there is a product RF impedance mismatch.

4. The adaptive compensation method for RF network impedance misalignment according to claim 1, characterized in that, The method further includes: Obtain the imaginary part X of the first network impedance value, the second network impedance value, and the third network impedance value; When the imaginary part X < 0, the direction of the impedance misalignment is determined to be capacitive misalignment; When the imaginary part X > 0, the direction of the impedance misalignment is determined to be inductive misalignment.

5. The adaptive compensation method for RF network impedance misalignment according to claim 1, characterized in that, Retrieve at least three sets of matching network parameter values ​​corresponding to the impedance misalignment direction from the pre-stored database, namely, low matching network parameter values, medium matching network parameter values, and high matching network parameter values.

6. The adaptive compensation method for RF network impedance misalignment according to claim 5, characterized in that, When the impedance offset direction is determined to be capacitive offset, the step of determining the offset compensation adaptation parameter value based on the impedance offset direction corresponding to the product's RF impedance offset includes: Adjust the capacitance parameter of the capacitive regulator to the low-matching network parameter value, and collect the network impedance value of the product when only the transmitter is turned on, the network impedance value when only the receiver is turned on, and the network impedance value when both the transmitter and receiver are turned off. Adjust the capacitance parameter of the capacitive regulator to the matching network parameter value, and collect the network impedance value of the product when only the transmitter is turned on, the network impedance value when only the receiver is turned on, and the network impedance value when both the transmitter and receiver are turned off. Adjust the capacitance parameter of the capacitive regulator to the high-matching network parameter value, and collect the network impedance value of the product when only the transmitter is turned on, the network impedance value when only the receiver is turned on, and the network impedance value when both the transmitter and receiver are turned off. The optimal network impedance value among all network impedance values ​​is extracted as the offset compensation adaptation parameter value.

7. A radio frequency network impedance offset adaptive compensation device, characterized in that, The device includes: The offset detection module is used to determine whether the product has a resonant impedance offset under the current environment when the product is powered on. The impedance acquisition module is used to acquire the current network impedance value when only the transmitter is turned on as the first network impedance value, the current network impedance value when only the receiver is turned on as the second network impedance value, and the current network impedance value when both the transmitter and receiver are turned off as the third network impedance value when it is determined that there is a product resonant impedance misalignment. The offset judgment module is also used to determine whether the product has radio frequency impedance offset in the current environment based on the first network impedance value, the second network impedance value and the third network impedance value; The impedance compensation module is used to determine the offset compensation adaptation parameter value according to the impedance offset direction corresponding to the product's RF impedance offset when it is determined that there is an offset offset in the product; and to perform an impedance compensation operation according to the offset compensation adaptation parameter value so that the product can enter the normal working mode.

8. A wireless product, characterized in that, The method includes a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor executes the computer program to implement the steps of the adaptive compensation method for RF network impedance misalignment as described in any one of claims 1 to 6.

9. A computer-readable storage medium having a computer program stored thereon, characterized in that, When the computer program is executed by the processor, it implements the steps of the adaptive compensation method for RF network impedance misalignment as described in any one of claims 1 to 6.

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