Radio frequency circuit, power adjustment method and device of radio frequency circuit, and electronic equipment

Abstract

The present disclosure relates to a radio frequency circuit, a power adjustment method and device thereof, and an electronic device. The radio frequency circuit comprises an amplification module and a control module. The amplification module comprises an amplifier and a function module. The function module is connected to an output end of the amplifier. The function module is used to adjust an output load impedance of the amplifier. The control module is connected to the amplifier and the function module respectively. The control module is used to determine a target load impedance according to input information of the amplifier, control the function module to adjust the output load impedance of the amplifier to the target load impedance, and control the amplifier to adjust a static parameter of the amplifier to match the target load impedance. The present disclosure can make the radio frequency circuit achieve optimal efficiency.

Description

TECHNICAL FIELD

[0001] The present disclosure relates to the field of electronic technology, and in particular, to a radio frequency circuit, a power adjustment method and device of the radio frequency circuit, and an electronic device. BACKGROUND

[0002] With the rapid development of wireless communication, radio frequency technology is widely used in various fields. Radio frequency technology is a non-contact automatic identification technology that automatically identifies target objects and obtains related data through radio frequency signals. It can work in various environments without human intervention. Currently, the most common radio frequency technology is usually applied in smart devices to realize wireless control of the smart devices. SUMMARY

[0003] To overcome the problems in the related art, the present disclosure provides a radio frequency circuit, a power adjustment method and device of the radio frequency circuit, and an electronic device.

[0004] According to a first aspect of an embodiment of the present disclosure, a radio frequency circuit is provided, comprising:

[0005] an amplification module, the amplification module comprising an amplifier and a function module, the function module being connected to an output end of the amplifier, and the function module being configured to adjust an output load impedance of the amplifier;

[0006] a control module, the control module being connected to the amplifier and the function module respectively, the control module being configured to determine a target load impedance according to input information of the amplifier, and control the function module to adjust the output load impedance of the amplifier to the target load impedance, and control the amplifier to adjust a static parameter of the amplifier to match the target load impedance.

[0007] Optionally, the function module comprises:

[0008] a plurality of impedance matching circuits, each impedance matching circuit of the plurality of impedance matching circuits corresponding to a load impedance;

[0009] a selection switch, the selection switch being connected to the control module, the plurality of impedance matching circuits, and the amplifier respectively, and the selection switch being configured to connect a target impedance matching circuit corresponding to the target load impedance in the plurality of impedance matching circuits to an output end of the amplifier under the control of the control module, so as to adjust the output load impedance of the amplifier to the target load impedance.

[0010] Optionally, the selection switch comprises a single-pole multi-throw switch, the single-pole multi-throw switch comprises a first contact and a plurality of second contacts, the first contact is connected with the output end of the amplifier, and the plurality of second contacts are connected with the plurality of impedance matching circuits one by one.

[0011] Optionally, the single-pole multi-throw switch comprises a first single-pole multi-throw switch and a second single-pole multi-throw switch.

[0012] The first contact of the first single-pole multi-throw switch is connected with the output end of the amplifier, and the plurality of second contacts of the first single-pole multi-throw switch are connected with the first ends of the plurality of impedance matching circuits one by one.

[0013] The plurality of second contacts of the second single-pole multi-throw switch are connected with the second ends of the plurality of impedance matching circuits one by one, and the first contact of the second single-pole multi-throw switch is the output end of the radio frequency circuit.

[0014] Optionally, the number of the amplification modules is a plurality, the plurality of amplification modules are connected with the control module respectively, and the plurality of amplification modules are connected in series.

[0015] According to a second aspect of the embodiment of the present disclosure, a terminal device is provided, comprising a terminal body and the radio frequency circuit as described in the first aspect, and the radio frequency circuit is arranged on the terminal body.

[0016] According to a third aspect of the embodiment of the present disclosure, a power adjustment method of a radio frequency circuit is provided, applied to the control module of the radio frequency circuit as described in the first aspect, and the method comprises:

[0017] detecting input information of the amplifier;

[0018] determining a target load impedance according to the input information of the amplifier;

[0019] controlling the function module to adjust the output load impedance of the amplifier to the target load impedance;

[0020] controlling the amplifier to adjust the static parameter of the amplifier to match the target load impedance.

[0021] Optionally, the input information comprises input power, and the determining of the target load impedance according to the input information of the amplifier comprises:

[0022] if the input power is greater than or equal to a power threshold, a first load impedance determined from a plurality of preset load impedances is the target load impedance;

[0023] If the input power is less than the power threshold, then the second load impedance determined from a plurality of preset load impedances is the target load impedance, and the first load impedance is greater than the second load impedance.

[0024] Optionally, the functional module includes multiple impedance matching circuits and a selection switch. The selection switch is connected to the control module, the multiple impedance matching circuits, and the amplifier, respectively. Each impedance matching circuit in the multiple impedance matching circuits corresponds to a load impedance. Controlling the functional module to adjust the output load impedance of the amplifier to the target load impedance includes:

[0025] From the plurality of impedance matching circuits, determine the target impedance matching circuit that matches the target load impedance;

[0026] The target impedance matching circuit is connected to the output of the amplifier via the selection switch.

[0027] Optionally, controlling the amplifier to adjust its static parameters to match the target load impedance includes:

[0028] The target static parameter corresponding to the target load impedance is determined from a plurality of preset static parameters;

[0029] The amplifier is controlled to adjust its static parameters to the target static parameters.

[0030] According to a fourth aspect of the present disclosure, a power regulation device for a radio frequency circuit is provided, applied to a control module of the radio frequency circuit described in the first aspect, the device comprising:

[0031] The detection module is configured to perform the detection of the input information of the amplifier;

[0032] The target load impedance determination module is configured to determine the target load impedance based on the input information of the amplifier;

[0033] The load impedance adjustment module is configured to perform the control function module to adjust the output load impedance of the amplifier to the target load impedance;

[0034] The static parameter adjustment module is configured to control the amplifier to adjust the static parameters of the amplifier to match the target load impedance.

[0035] According to a fifth aspect of the present disclosure, an electronic device is provided, comprising:

[0036] An amplification module, comprising an amplifier and a functional module, wherein the functional module is connected to the output terminal of the amplifier and is used to adjust the output load impedance of the amplifier;

[0037] processor;

[0038] Memory used to store processor-executable instructions;

[0039] The processor is configured as follows:

[0040] Detect the input information of the amplifier;

[0041] The target load impedance is determined based on the input information of the amplifier;

[0042] The control module adjusts the output load impedance of the amplifier to the target load impedance;

[0043] The amplifier is controlled to adjust its static parameters to match the target load impedance.

[0044] According to a sixth aspect of the present disclosure, a computer-readable storage medium is provided that stores computer program instructions thereon, which, when executed by a processor, implement the steps of the power regulation method of the radio frequency circuit provided in the third aspect of the present disclosure.

[0045] The technical solutions provided by the embodiments of this disclosure can include the following beneficial effects: The radio frequency (RF) circuit includes an amplification module and a control module. The amplification module includes an amplifier and a functional module, which is connected to the output terminal of the amplifier and is used to adjust the output load impedance of the amplifier. The control module is connected to both the amplifier and the functional module. The control module determines the target load impedance based on the amplifier's input information and controls the functional module to adjust the amplifier's output load impedance to the target load impedance. It also controls the amplifier to adjust its static parameters to match the target load impedance. During operation, the controller can determine the target load impedance based on the amplifier's input information. Since the input information reflects the current power level of the RF circuit, the control module's control of the functional module to adjust the amplifier's output load impedance to the target load impedance ensures that the RF circuit can operate efficiently at maximum power based on the target load impedance. Furthermore, the amplifier can be adjusted according to the pre-matched static parameters to the target load impedance, allowing for convenient and rapid adjustment of the amplifier's static parameters to their current optimal state, further ensuring that the RF circuit is currently at its optimal performance.

[0046] It should be understood that the above general description and the following detailed description are exemplary and explanatory only, and are not intended to limit this disclosure. Attached Figure Description

[0047] The accompanying drawings, which are incorporated in and form a part of this specification, illustrate embodiments consistent with this disclosure and, together with the description, serve to explain the principles of this disclosure.

[0048] Figure 1 This is a schematic diagram of the structure of a radio frequency circuit according to an exemplary embodiment.

[0049] Figure 2 This is a schematic diagram of the structure of a radio frequency circuit according to another exemplary embodiment.

[0050] Figure 3 This is a schematic diagram of the structure of a radio frequency circuit according to yet another exemplary embodiment.

[0051] Figure 4 This is a Smith chart illustrated according to an exemplary embodiment.

[0052] Figure 5 This is a schematic diagram of the structure of a terminal device according to an exemplary embodiment.

[0053] Figure 6 This is a flowchart illustrating a power regulation method for an radio frequency circuit according to an exemplary embodiment.

[0054] Figure 7 This is a flowchart illustrating a power regulation method for a radio frequency circuit according to another exemplary embodiment.

[0055] Figure 8 This is a block diagram illustrating a power regulation device for a radio frequency circuit according to an exemplary embodiment.

[0056] Figure 9 This is a block diagram illustrating an electronic device according to an exemplary embodiment. Detailed Implementation

[0057] Exemplary embodiments will now be described in detail, examples of which are illustrated in the accompanying drawings. When the following description relates to the drawings, unless otherwise indicated, the same numerals in different drawings denote the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with this disclosure. Rather, they are merely examples of apparatuses and methods consistent with some aspects of this disclosure as detailed in the appended claims.

[0058] With the continuous development of technology, more and more devices are transitioning from wired to wireless, and radio frequency (RF) technology plays a crucial role in this process. For example, RF chips for Bluetooth and Wireless Fidelity (WiFi) are key components for wireless communication in wearable devices (such as wireless headphones and watches), and are also one of the major sources of power consumption for these devices.

[0059] However, the main technical contradiction in the design and application of radio frequency chips or circuits is the contradiction between maximum power and power consumption.

[0060] To address the aforementioned issues, this disclosure provides a radio frequency (RF) circuit, a power regulation method for the RF circuit, an apparatus, and an electronic device. These methods ensure that the RF circuit operates at its maximum output capacity while utilizing the principle of load traction and a flexible combination of switching matching circuits. This significantly improves the power consumption performance of the RF chip at different power levels and enhances the efficiency of the RF circuit.

[0061] Figure 1 This is a schematic diagram of a radio frequency circuit according to an exemplary embodiment, such as... Figure 1 As shown, the radio frequency circuit 10 may include an amplification module 12 and a control module 11.

[0062] The amplification module 12 includes an amplifier 121 and a functional module 122, with the functional module 122 connected to the output terminal of the amplifier 121. The functional module 122 is used to adjust the output load impedance of the amplifier 121, that is, to adjust the load position of the amplifier 121.

[0063] The control module 11 is connected to the amplifier 121 and the function module 122 respectively. The control module 11 is used to determine the target load impedance according to the input information of the amplifier 121, and control the function module 122 to adjust the output load impedance of the amplifier 121 to the target load impedance, and control the amplifier 121 to adjust the static parameters of the amplifier 121 to match the target load impedance.

[0064] The input information may include, but is not limited to, voltage, current, and power.

[0065] In practical applications, since the input signal at the input terminal of amplifier 121 determines the transmission power of RF circuit 10, control module 11 can detect the input signal at the input terminal of amplifier 121 and determine the transmission power to be achieved by RF circuit 10 based on the detected input signal. Because different transmission powers require different load impedances to ensure the normal operation of RF circuit 10, control module 11 can further determine the target load impedance required by amplifier 121 based on the transmission power. Then, control function module 122 adjusts the output load impedance of amplifier 121 to the target load impedance, thereby ensuring that RF circuit 10 operates at maximum power according to current requirements.

[0066] Because the static parameters of amplifier 121 fluctuate when the output load impedance changes, potentially causing instability in the operation of RF circuit 10, the control module 11 adjusts the output load impedance of amplifier 121 to the target load impedance. This allows the static parameters of amplifier 121 to match the target load impedance. Different static parameters are pre-matched to different load impedances. When the static parameters of amplifier 121 match the load impedance it is used with, optimal performance is achieved, thus ensuring that RF circuit 10 operates at its best.

[0067] Optional static parameters include, but are not limited to, static voltage and static current.

[0068] As can be seen, in this embodiment, the radio frequency circuit 10 includes an amplification module 12 and a control module 11. The amplification module 12 includes an amplifier 121 and a functional module 122. The functional module 122 is connected to the output terminal of the amplifier 121 and is used to adjust the output load impedance of the amplifier 121. The control module 11 is connected to both the amplifier 121 and the functional module 122. The control module 11 is used to determine the target load impedance based on the input information of the amplifier 121, and to control the functional module 122 to adjust the output load impedance of the amplifier 121 to the target load impedance. It also controls the amplifier 121 to adjust its static parameters to match the target load impedance. When the circuit is working, the controller can determine the target load impedance based on the input information of the amplifier 121. Since the input information reflects the power of the radio frequency circuit 10 at its current operating state, the control module 11 controls the functional module 122 to adjust the output load impedance of the amplifier 121 to the target load impedance, which ensures that the radio frequency circuit 10 can operate efficiently at maximum power based on the target load impedance. In addition, the amplifier 121 can be adjusted according to the static parameters that are pre-matched with the target load impedance, so that the static parameters of the amplifier 121 can be quickly adjusted to the current optimal state, further ensuring that the RF circuit 10 is currently in optimal performance.

[0069] In some implementations, please refer again. Figure 1 The functional module 122 includes: multiple impedance matching circuits 1222 and a selection switch 1221.

[0070] Each impedance matching circuit 1222 in the plurality of impedance matching circuits 1222 corresponds to a load impedance. Furthermore, according to the load pulling principle, different load impedances can correspond to different power ratings of the amplifier 121. Therefore, each impedance matching circuit 1222 can correspond to a power rating.

[0071] Based on the load-pull principle, by continuously adjusting the impedances at the input and output terminals, the input and output matching impedances that maximize the output power of the active device can be found. Similarly, the matching impedance that maximizes the efficiency of the power transistor can also be obtained. This method can accurately measure the optimal performance of the device under large-signal conditions, reflecting the characteristics of the device's input and output impedances as a function of frequency and input power, providing a solid foundation for the design optimization of devices and circuits.

[0072] The selector switch 1221 is connected to the control module 11, multiple impedance matching circuits 1222, and amplifier 121 respectively. The selector switch 1221 is used to connect the target impedance matching circuit corresponding to the target load impedance in the multiple impedance matching circuits 1222 to the output terminal of amplifier 121 under the control of the control module 11, so as to adjust the output load impedance of amplifier 121 to the target load impedance.

[0073] In practical applications, after determining the target impedance load impedance, the control module 11 can select the target impedance matching circuit corresponding to the target load impedance from multiple impedance matching circuits 1222, and then control the selection switch 1221 to connect the target impedance matching circuit to the output terminal of the amplifier 121, thereby adjusting the power of the amplifier 121 to the target power, that is, adjusting the transmission power of the radio frequency circuit 10 to the target power.

[0074] For example, multiple impedance matching circuits 1222 may include: an impedance matching circuit 1 corresponding to the high-power region, an impedance matching circuit 2 corresponding to the medium-power region, and an impedance matching circuit 3 corresponding to the low-power region. If the control module 11 determines that the transmission power is high power based on the input signal, it can select the impedance matching circuit 1 to connect to the output terminal of the amplifier 121 through the selection switch 1221, thereby directing the transmission power of the RF circuit 10 to the high-power region and ensuring the output capability of the RF circuit 10. If the control module 11 determines that the transmission power is low power based on the input signal, it can select the impedance matching circuit 3 to connect to the output terminal of the amplifier 121 through the selection switch 1221, thereby directing the transmission power of the RF circuit 10 to the low-power region, thereby ensuring that the RF circuit can achieve improved efficiency and reduced power consumption at low power levels.

[0075] In this embodiment, the functional module 122 may include multiple impedance matching circuits 1222 and a selection switch 1221. Each impedance matching circuit 1222 corresponds to a load impedance. Based on the load traction principle, the controller can select the appropriate impedance matching circuit 1222 through the selection switch 1221 to quickly adjust the power of the RF circuit 10, thereby improving the power regulation efficiency.

[0076] In other embodiments, if there is no impedance matching circuit 1222 among the multiple impedance matching circuits 1222 that corresponds to the target impedance load, the control module 11 can determine at least two suitable impedance matching circuits 1222 from the multiple impedance matching circuits 1222 and combine them so that the combined impedance matching circuit 1222 corresponds to the target load impedance. Then, the control selector will connect the combined impedance matching circuit 1222 to the output terminal of the amplifier 121, thereby flexibly using multiple impedance matching circuits 1222 and improving the regulation efficiency of the RF circuit 10.

[0077] Optional, please refer again Figure 1 The selector switch 1221 may include a single-pole multi-throw switch, which includes a first contact and multiple second contacts. The first contact is connected to the output terminal of the amplifier 121, and the multiple second contacts are connected one-to-one with multiple impedance matching circuits 1222.

[0078] For example, if the impedance matching circuit 1222 corresponding to the target load impedance is impedance matching circuit 3, then the control module 11 can control the single-pole multi-throw switch to connect the first contact and the second contact corresponding to the matching circuit 3. At this time, the first end of the impedance matching circuit 3 is connected to the second contact of the single-pole multi-throw switch corresponding to the matching circuit 3, and the second end of the impedance matching circuit 3 is the output end of the radio frequency circuit 10.

[0079] Optional, please refer to Figure 2 The single-pole multi-throw (SPMD) switch includes a first SPMD switch 1221a and a second SPMD switch 1221b. The first contact of the first SPMD switch 1221a is connected to the output terminal of the amplifier 121, and multiple second contacts of the first SPMD switch 1221a are connected one-to-one to the first terminals of multiple impedance matching circuits 1222. Multiple second contacts of the second SPMD switch 1221b are connected one-to-one to the second terminals of the multiple impedance matching circuits 1222, and the first contact of the second SPMD switch 1221b is the output terminal of the radio frequency circuit 10.

[0080] For example, if the impedance matching circuit 1222 corresponding to the target load impedance is the impedance matching circuit 3, then the control module 11 can control the first single-pole multi-throw switch 1221a to connect its second contact corresponding to the matching circuit 3 and the first end of the matching circuit 3, and control the second single-pole multi-throw switch 1221b to connect its second contact corresponding to the matching circuit 3 and the second end of the matching circuit 3.

[0081] In this embodiment, a single-pole multi-throw switch, including a first single-pole multi-throw switch 1221a and a second single-pole multi-throw switch 1221b, is used. The two single-pole multi-throw switches are controlled by the control module 11 to connect to the target impedance matching circuit. This allows the target impedance matching circuit to be connected separately to the output terminal of the amplifier 121, avoiding interference from other matching circuits in the multiple impedance matching circuits 1222.

[0082] In some embodiments, there are multiple amplification modules 12, which are connected to the control module 11 respectively, and the multiple amplification modules 12 are connected in series.

[0083] For example, such as Figure 3 As shown, there are two amplification modules 12. These two modules form a two-stage amplification RF circuit 10. The output of one amplification module 12 can be connected to the input of the other. The control module 11 is connected to the amplifier 121 in each amplification module 12. Similarly, when there are three amplification modules 12, the three modules and the control module 11 can be connected to form a three-stage amplification RF circuit 10. The number of amplification modules 12 can be determined based on the amplification level architecture required by the RF circuit 10 in the actual application; the specific number is not limited here.

[0084] For example, when the number of amplification modules 12 is 2, the workflow may include 6 stages:

[0085] In the first stage, the control module 11 detects changes in the power level. Specifically, it can detect changes in the power level based on the input signal of the amplifier 121. The power level refers to the level of power transmitted by the radio frequency circuit. This power level can be pre-configured, with different power levels corresponding to different power ranges. Optionally, the power level is positively correlated with the power magnitude.

[0086] After detecting a change in power level, the system enters the second stage, in which it controls the first-stage amplifier 121 to switch to the required matching circuit, so that the first-stage amplifier 121 reaches the optimal power consumption load.

[0087] In the third stage, the static parameters of the first amplifier 121 are adjusted so that the voltage and current of the first amplifier 121 reach the optimal power consumption state of the static operating point.

[0088] In the fourth stage, the control of the second-stage amplifier 121 is switched to the required matching circuit connection, so that the second-stage amplifier 121 reaches the optimal power load.

[0089] In the fifth stage, the static parameters of the second amplifier 121 are adjusted so that the voltage and current of the second amplifier 121 reach the optimal power consumption state of the static operating point.

[0090] In the sixth stage, it is determined that the two-stage amplifier 121 has been adjusted, the RF circuit 10 has completed power consumption optimization, and the RF circuit has reached the optimal power consumption device.

[0091] like Figure 4 As shown, by analyzing Figure 3 The matching circuit of the second-stage amplifier 121110 was adjusted. Experiments verified that adjusting the matching position (load position) of the RF circuit 10 from "position 1" and "position 2" to "position 3" resulted in current changes of 500mA, 700mA, and 1000mA, respectively. The experimental results show that the load-pull method described in the above embodiment achieves an RF power efficiency improvement of around 10%, while the efficiency improvement achieved through simple voltage regulation is only around 1%. Therefore, the RF circuit 10 in this embodiment can significantly improve power efficiency during operation.

[0092] Figure 5 This is a schematic diagram of the structure of a terminal device according to an exemplary embodiment, such as... Figure 5 As shown, the terminal device 20 includes a terminal body 21 and a radio frequency circuit 10 as described in the above embodiment, the radio frequency circuit 10 being disposed on the terminal body 21. This device may include, but is not limited to, smartphones, smart wearable devices, personal computers, tablets, smart home devices, etc.

[0093] Figure 6 This is an exemplary embodiment illustrating a power regulation method for an radio frequency (RF) circuit. This method is applied to the control module of the RF circuit in the above embodiment, such as... Figure 6 As shown, the method includes:

[0094] In step S110, the input information of the detection amplifier is detected.

[0095] In some embodiments, the control module can detect whether the input information of the amplifier has changed. If it has changed, the control module can obtain the input information of the amplifier. Exemplarily, the input information is the input voltage. The control module can determine whether the power level has changed according to the input voltage. For example, it is pre-set that when the voltage is between a1 - a2, the corresponding power level is 1, and when the voltage is between a2 - a3, the corresponding power level is 2, where a1 < a2 < a3. If the input voltage changes from between a1 - a2 to between a2 - a3, it is determined that the amplifier changes from power level 1 to power level 2. Then the control module detects the current input voltage a.

[0096] In step S120, the target load impedance is determined according to the input information of the amplifier.

[0097] Continuing with the above example, a mapping relationship is pre-established among different input voltages, different power levels, and different load impedances. This mapping relationship can be as shown in Table 1:

[0098] Table 1

[0099]

[0100] [[ID=!15]]

[0101] It can be seen that the control module can look up the corresponding power level and load impedance from Table 1 according to the input voltage a of the amplifier. For example, if the input voltage a is between the voltages a2 - a3, it can be determined that the load impedance B2 is the target load impedance. Here, the load impedance B2 can be a numerical value or a range value, which is not limited herein.

[0102] In step S130, the control function module adjusts the output load impedance of the amplifier to the target load impedance.

[0103] Continuing with the above example, the control module can adjust the current output load impedance of the amplifier to the load impedance B2.

[0104] In step S140, control the amplifier to adjust the static parameters of the amplifier to match the target load impedance.

[0105] Continuing with the above example, please refer to Table 1 again. According to Table 1, the static parameter corresponding to the load impedance B2 is C2. Then the current static parameters of the amplifier can be adjusted to the static parameter C2, so that the radio frequency circuit reaches the optimal power consumption state. Here, the static parameter C2 can be a numerical value or a range value, which is not limited herein.

[0106] Among them, more specific implementation manners of steps S110 to S140 can refer to the working principle of the radio frequency circuit in the above embodiments, so details are not described herein.

[0107] In this embodiment, the input information of the amplifier is detected. The target load impedance is then determined based on the amplifier's input information. The control module then adjusts the amplifier's output load impedance to the target load impedance. Finally, the amplifier's static parameters are adjusted to match the target load impedance. This allows the RF circuit to be quickly and efficiently adjusted to its optimal power consumption state and stably maintained in that state.

[0108] Figure 7 This is a power regulation method for an radio frequency circuit according to another exemplary embodiment. The method is applied to the control module of the radio frequency circuit in the above embodiment, as shown in Figure 7. The method includes:

[0109] In step S210, the input information of the detection amplifier is detected.

[0110] In step S220, the target load impedance is determined based on the amplifier's input information.

[0111] In some implementations, step S220 may include: if the input power is greater than or equal to a power threshold, then a first load impedance determined from a plurality of preset load impedances is the target load impedance. If the input power is less than the power threshold, then a second load impedance determined from a plurality of preset load impedances is the target load impedance, and the first load impedance is greater than the second load impedance.

[0112] Considering that the higher the input power of a radio frequency circuit, the higher the transmit power, and the higher the corresponding load impedance, in this embodiment, the second load impedance determined when the input power is less than the power threshold is the target load impedance, and the first load impedance determined when the input power is greater than or equal to the power threshold is the target load impedance, so that the target load impedance can be determined quickly and effectively.

[0113] Optionally, the preset multiple load impedances may also include a third load impedance, which is less than the second load impedance. When the input power is less than the preset power, the third load impedance can be determined as the target load impedance, wherein the preset power is less than the power threshold.

[0114] In step S230, the control function module adjusts the amplifier's output load impedance to the target load impedance.

[0115] In some implementations, the functional module includes multiple impedance matching circuits and a selection switch. The selection switch is connected to the control module, the multiple impedance matching circuits, and the amplifier, respectively. Each impedance matching circuit corresponds to a load impedance. A specific implementation of step S230 may include: determining a target impedance matching circuit from the multiple impedance matching circuits that matches the target load impedance; and connecting the target impedance matching circuit to the output of the amplifier via the selection switch.

[0116] For example, the mapping relationship between multiple pre-established matching circuits and multiple target load impedances can be shown in Table 2:

[0117] Table 2

[0118]

[0119]

[0120] As can be seen, the control module can find the target impedance matching circuit that matches the target load impedance according to Table 2. For example, if the target load impedance is load impedance B2, then matching circuit 2 can be determined as the target impedance matching circuit.

[0121] In step S240, a target static parameter corresponding to the target load impedance is determined from a plurality of preset static parameters.

[0122] For example, the control module can determine the target static parameter corresponding to the target load impedance from a plurality of preset static parameters according to Table 1.

[0123] In step S250, the control amplifier adjusts the amplifier's static parameters to the target static parameters.

[0124] Figure 8 This is a block diagram illustrating a power regulation device for a radio frequency circuit according to an exemplary embodiment. (Refer to...) Figure 8 The device 300 is applied to the control module of the radio frequency circuit in the above embodiment. The device 300 includes a detection module 310, a target load impedance determination module 320, a load impedance adjustment module 330, and a static parameter adjustment module 340. Wherein:

[0125] The detection module 310 is configured to detect the input information of the amplifier.

[0126] The target load impedance determination module 320 is configured to determine the target load impedance based on the amplifier's input information.

[0127] The load impedance adjustment module 330 is configured as a control function module to adjust the output load impedance of the amplifier to the target load impedance.

[0128] The static parameter adjustment module 340 is configured to control the amplifier to adjust the amplifier's static parameters to match the target load impedance.

[0129] In some implementations, the input information includes input power, and the target load impedance determination module 320 includes:

[0130] The first determining submodule is configured to determine the first load impedance from a plurality of preset load impedances as the target load impedance when the input power is greater than or equal to a power threshold.

[0131] The second determining submodule is configured to determine the target load impedance from a plurality of preset load impedances when the input power is less than a power threshold, wherein the first load impedance is greater than the second load impedance.

[0132] In some embodiments, the functional module includes multiple impedance matching circuits and a selection switch. The selection switch is connected to the control module, the multiple impedance matching circuits, and the amplifier, respectively. Each impedance matching circuit in the multiple impedance matching circuits corresponds to a load impedance. The target load impedance determination module 320 includes:

[0133] The target impedance matching circuit determination submodule is configured to determine, from the plurality of impedance matching circuits, a target impedance matching circuit that matches the target load impedance;

[0134] The selection submodule is configured to connect the target impedance matching circuit to the output of the amplifier via the selection switch.

[0135] In some implementations, the static parameter adjustment module 340 includes:

[0136] The target static parameter determination submodule is configured to determine the target static parameter corresponding to the target load impedance from a plurality of preset static parameters.

[0137] The static parameter adjustment submodule is configured to control the amplifier to adjust the static parameters of the amplifier to the target static parameters.

[0138] Regarding the apparatus in the above embodiments, the specific manner in which each module performs its operation has been described in detail in the embodiments related to the method, and will not be elaborated upon here.

[0139] This disclosure also provides a computer-readable storage medium having stored thereon computer program instructions that, when executed by a processor, implement the steps of the power regulation method of the radio frequency circuit provided in this disclosure.

[0140] Figure 9 This is a block diagram illustrating an electronic device 800 according to an exemplary embodiment. For example, the electronic device 800 may be a mobile phone, computer, digital broadcasting terminal, messaging device, game console, tablet device, medical device, fitness equipment, personal digital assistant, wireless headset, smart bracelet, etc.

[0141] Reference Figure 9 The electronic device 800 may include one or more of the following components: a processing component 802, a memory 804, a power component 806, a multimedia component 808, an audio component 810, an input / output (I / O) interface 812, a sensor component 814, and a communication component 816.

[0142] Processing component 802 typically controls the overall operation of electronic device 800, such as operations associated with display, telephone calls, data communication, camera operation, and recording operations. Processing component 802 may include one or more processors 820 to execute instructions to perform all or part of the steps of the methods described above. Furthermore, processing component 802 may include one or more modules to facilitate interaction between processing component 802 and other components. For example, processing component 802 may include a multimedia module to facilitate interaction between multimedia component 808 and processing component 802. Processing component 802 may include components described in the above embodiments. Figure 1 The control module 10 shown.

[0143] Memory 804 is configured to store various types of data to support the operation of electronic device 800. Examples of this data include instructions for any application or method operating on electronic device 800, contact data, phonebook data, messages, pictures, videos, etc. Memory 804 can be implemented by any type of volatile or non-volatile storage device or a combination thereof, such as static random access memory (SRAM), electrically erasable programmable read-only memory (EEPROM), erasable programmable read-only memory (EPROM), programmable read-only memory (PROM), read-only memory (ROM), magnetic storage, flash memory, magnetic disk, or optical disk.

[0144] Power component 806 provides power to various components of electronic device 800. Power component 806 may include a power management system, one or more power supplies, and other components associated with generating, managing, and distributing power to electronic device 800.

[0145] Multimedia component 808 includes a screen that provides an output interface between the electronic device 800 and the user. In some embodiments, the screen may include a liquid crystal display (LCD) and a touch panel (TP). If the screen includes a touch panel, the screen may be implemented as a touchscreen to receive input signals from the user. The touch panel includes one or more touch sensors to sense touches, swipes, and gestures on the touch panel. The touch sensors may sense not only the boundaries of the touch or swipe action but also the duration and pressure associated with the touch or swipe operation. In some embodiments, multimedia component 808 includes a front-facing camera and / or a rear-facing camera. When the electronic device 800 is in an operating mode, such as a shooting mode or a video mode, the front-facing camera and / or the rear-facing camera may receive external multimedia data. Each front-facing camera and rear-facing camera may be a fixed optical lens system or have focal length and optical zoom capabilities.

[0146] Audio component 810 is configured to output and / or input audio signals. For example, audio component 810 includes a microphone (MIC) configured to receive external audio signals when electronic device 800 is in an operating mode, such as call mode, recording mode, and voice recognition mode. The received audio signals may be further stored in memory 804 or transmitted via communication component 816. In some embodiments, audio component 810 also includes a speaker for outputting audio signals.

[0147] I / O interface 812 provides an interface between processing component 802 and peripheral interface modules, such as keyboards, click wheels, buttons, etc. These buttons may include, but are not limited to, home buttons, volume buttons, power buttons, and lock buttons.

[0148] Sensor assembly 814 includes one or more sensors for providing state assessments of various aspects of electronic device 800. For example, sensor assembly 814 can detect the on / off state of electronic device 800, the relative positioning of components such as the display and keypad of electronic device 800, changes in position of electronic device 800 or a component of electronic device 800, the presence or absence of user contact with electronic device 800, orientation or acceleration / deceleration of electronic device 800, and temperature changes of electronic device 800. Sensor assembly 814 may include a proximity sensor configured to detect the presence of nearby objects without any physical contact. Sensor assembly 814 may also include a light sensor, such as a CMOS or CCD image sensor, for use in imaging applications. In some embodiments, sensor assembly 814 may also include an accelerometer, gyroscope, magnetometer, pressure sensor, or temperature sensor.

[0149] Communication component 816 is configured to facilitate wired or wireless communication between electronic device 800 and other devices. Electronic device 800 can access wireless networks based on communication standards, such as WiFi, 2G, or 3G, or combinations thereof. In one exemplary embodiment, communication component 816 receives broadcast signals or broadcast-related information from an external broadcast management system via a broadcast channel. In one exemplary embodiment, communication component 816 also includes a near-field communication (NFC) module to facilitate short-range communication. For example, the NFC module may be implemented based on radio frequency identification (RFID) technology, Infrared Data Association (IrDA) technology, ultra-wideband (UWB) technology, Bluetooth (BT) technology, and other technologies. Communication component 816 includes the features described in the above embodiments. Figure 1 The radio frequency circuit shown.

[0150] In an exemplary embodiment, the electronic device 800 may be implemented by one or more application-specific integrated circuits (ASICs), digital signal processors (DSPs), digital signal processing devices (DSPDs), programmable logic devices (PLDs), field-programmable gate arrays (FPGAs), controllers, microcontrollers, microprocessors, or other electronic components to perform the methods described above.

[0151] In an exemplary embodiment, a non-transitory computer-readable storage medium including instructions is also provided, such as a memory 804 including instructions, which can be executed by a processor 820 of an electronic device 800 to perform the above-described method. For example, the non-transitory computer-readable storage medium may be a ROM, random access memory (RAM), CD-ROM, magnetic tape, floppy disk, and optical data storage device, etc.

[0152] In another exemplary embodiment, a computer program product is also provided, the computer program product comprising a computer program executable by a programmable device, the computer program having a code portion for performing the power regulation method of the radio frequency circuit described above when executed by the programmable device.

[0153] Other embodiments of this disclosure will readily occur to those skilled in the art upon consideration of the specification and practice of this disclosure. This application is intended to cover any variations, uses, or adaptations of this disclosure that follow the general principles of this disclosure and include common knowledge or customary techniques in the art not disclosed herein. The specification and examples are to be considered exemplary only, and the true scope and spirit of this disclosure are indicated by the following claims.

[0154] It should be understood that this disclosure is not limited to the precise structures described above and shown in the accompanying drawings, and various modifications and changes can be made without departing from its scope. The scope of this disclosure is limited only by the appended claims.

Claims

1. A radio frequency circuit, characterized in that, include: An amplification module, comprising an amplifier and a functional module, wherein the functional module is connected to the output terminal of the amplifier and is used to adjust the output load impedance of the amplifier; as well as A control module is connected to both the amplifier and the functional module. The control module determines the desired transmit power level of the radio frequency circuit based on the input voltage in the amplifier's input information. If the power level changes, it determines the target load impedance based on the voltage range of the input voltage, controls the functional module to adjust the amplifier's output load impedance to the target load impedance, and controls the amplifier to adjust its static parameters to match the target load impedance, so that the radio frequency circuit operates at maximum power according to current requirements. The power level is positively correlated with the power magnitude.

2. The radio frequency circuit according to claim 1, characterized in that, The functional module includes: Multiple impedance matching circuits, each of which corresponds to a load impedance; and The selection switch is connected to the control module, multiple impedance matching circuits, and an amplifier. Under the control of the control module, the selection switch is used to connect the target impedance matching circuit corresponding to the target load impedance among the multiple impedance matching circuits to the output terminal of the amplifier, so as to adjust the output load impedance of the amplifier to the target load impedance.

3. The radio frequency circuit according to claim 2, characterized in that, The selection switch includes a single-pole multi-throw switch, which includes a first contact and multiple second contacts. The first contact is connected to the output terminal of the amplifier, and the multiple second contacts are connected one-to-one with the multiple impedance matching circuits.

4. The radio frequency circuit according to claim 3, characterized in that, The single-pole multi-throw switch includes a first single-pole multi-throw switch and a second single-pole multi-throw switch; The first contact of the first single-pole multi-throw switch is connected to the output terminal of the amplifier, and the multiple second contacts of the first single-pole multi-throw switch are connected one-to-one with the first terminals of the multiple impedance matching circuits. The second contacts of the second single-pole multi-throw switch are connected one-to-one with the second terminals of the multiple impedance matching circuits, and the first contact of the second single-pole multi-throw switch is the output terminal of the radio frequency circuit.

5. The radio frequency circuit according to any one of claims 1-4, characterized in that, The number of amplification modules is multiple, and the multiple amplification modules are respectively connected to the control module and the multiple amplification modules are connected in series.

6. A terminal device, characterized in that, It includes a terminal body and a radio frequency circuit as described in any one of claims 1-5, wherein the radio frequency circuit is disposed on the terminal body.

7. A power regulation method for an radio frequency circuit, characterized in that, The method, applied to a control module of a radio frequency circuit as described in any one of claims 1-5, comprises: Detect the input information of the amplifier; The power level of the radio frequency circuit to be achieved is determined based on the input voltage in the input information of the amplifier. If the power level changes, the target load impedance is determined based on the voltage range to which the input voltage belongs. The power level is positively correlated with the power magnitude. The control module adjusts the output load impedance of the amplifier to the target load impedance so that the RF circuit operates at maximum power according to current requirements. The amplifier is controlled to adjust its static parameters to match the target load impedance.

8. The method according to claim 7, characterized in that, The input information includes input power, and the method further includes: If the input power is greater than or equal to the power threshold, then the first load impedance determined from a plurality of preset load impedances is the target load impedance; If the input power is less than the power threshold, then the second load impedance determined from a plurality of preset load impedances is the target load impedance, and the first load impedance is greater than the second load impedance.

9. The method according to claim 7, characterized in that, The functional module includes multiple impedance matching circuits and a selection switch. The selection switch is connected to the control module, the multiple impedance matching circuits, and the amplifier, respectively. Each impedance matching circuit corresponds to a load impedance. Controlling the functional module to adjust the output load impedance of the amplifier to the target load impedance includes: From the plurality of impedance matching circuits, determine the target impedance matching circuit that matches the target load impedance; The target impedance matching circuit is connected to the output of the amplifier via the selection switch.

10. The method according to any one of claims 7-9, characterized in that, The step of controlling the amplifier to adjust its static parameters to match the target load impedance includes: The target static parameter corresponding to the target load impedance is determined from a plurality of preset static parameters; The amplifier is controlled to adjust its static parameters to the target static parameters.

11. A power regulation device for a radio frequency circuit, characterized in that, The control module applied to the radio frequency circuit as described in any one of claims 1-5, the device comprising: The detection module is configured to detect the input information of the amplifier; The target load impedance determination module is configured to determine the power level of the transmission power to be achieved by the radio frequency circuit based on the input voltage in the input information of the amplifier, and to determine the target load impedance based on the voltage range to which the input voltage belongs when the power level changes, wherein the power level is positively correlated with the power magnitude; A load impedance adjustment module is configured to control the functional module to adjust the output load impedance of the amplifier to the target load impedance, so that the RF circuit operates at maximum power according to current requirements; The static parameter adjustment module is configured to control the amplifier to adjust the static parameters of the amplifier to match the target load impedance.

12. An electronic device, characterized in that, The electronic device includes the radio frequency circuit as described in any one of claims 1-5, comprising: An amplification module, comprising an amplifier and a functional module, wherein the functional module is connected to the output terminal of the amplifier and is used to adjust the output load impedance of the amplifier; processor; Memory used to store processor-executable instructions; The processor is configured as follows: Detect the input information of the amplifier; The power level of the radio frequency circuit to be achieved is determined based on the input voltage in the input information of the amplifier. If the power level changes, the target load impedance is determined based on the voltage range to which the input voltage belongs. The power level is positively correlated with the power magnitude. The control module adjusts the output load impedance of the amplifier to the target load impedance so that the RF circuit operates at maximum power according to current requirements. The amplifier is controlled to adjust its static parameters to match the target load impedance.

13. A computer-readable storage medium having computer program instructions stored thereon, characterized in that, When executed by a processor, the program instructions implement the steps of the method described in any one of claims 7 to 10.

Images