Radio frequency circuit, electronic equipment and radio frequency power adjustment system

Abstract

The present application discloses a radio frequency circuit, an electronic device and a radio frequency power adjustment system, which belong to the field of communication technology. The radio frequency circuit includes: a radio frequency component, which is used to transmit a signal according to the radio frequency power of the electronic device, and the radio frequency component includes a radio frequency transceiver, a coupler and a radio frequency antenna connected in sequence; a coupling path attenuation control network, which is used to adjust the radio frequency power of the electronic device, one end of the coupling path attenuation control network is connected to the radio frequency transceiver, and the other end of the coupling path attenuation control network is connected to the coupler; a register, which is used to store a sorting code corresponding to the test radio frequency power of the electronic device; a control module, which is connected to the coupling path attenuation control network and the register, is used to obtain the sorting code from the register, and sends a first control signal to the coupling path attenuation control network according to a preset radio frequency power control strategy and the sorting code, and controls the coupling path attenuation control network to adjust the radio frequency power of the electronic device based on the test radio frequency power corresponding to the sorting code.

Description

Technical Field

[0001] The present application belongs to the field of communication technology, and specifically relates to a radio frequency circuit, an electronic device and a radio frequency power adjustment system. Background Art

[0002] RF power is an important indicator of electronic devices. Low RF power accuracy will bring the risk of exceeding the SAR (Specific Absorption Rate) of electronic devices. Due to the limitations of the production process, the RF power of electronic devices actually produced will have certain fluctuations, affecting the adjustment accuracy of the RF power of electronic devices. In order to improve the RF power accuracy of electronic devices in the prior art, higher chip design and chip technology are required, which is difficult to achieve. Summary of the invention

[0003] The purpose of the embodiments of the present application is to provide a radio frequency circuit, an electronic device and a radio frequency power adjustment system, which can solve the problem of low radio frequency power accuracy of electronic equipment.

[0004] In a first aspect, an embodiment of the present application provides a radio frequency circuit, including:

[0005] A radio frequency component, used to transmit a signal according to the radio frequency power of the electronic device, the radio frequency component comprising a radio frequency transceiver, a coupler and a radio frequency antenna connected in sequence;

[0006] A coupling path attenuation control network, used for adjusting the radio frequency power of the electronic device, wherein one end of the coupling path attenuation control network is connected to the radio frequency transceiver, and the other end of the coupling path attenuation control network is connected to the coupler;

[0007] A register for storing a sort code corresponding to a test radio frequency power of the electronic device;

[0008] A control module is connected to the coupling path attenuation control network and the register, and is used to obtain the sorting code from the register, send a first control signal to the coupling path attenuation control network according to a preset RF power control strategy and the sorting code, and control the coupling path attenuation control network to adjust the RF power of the electronic device based on the test RF power corresponding to the sorting code.

[0009] In a second aspect, an embodiment of the present application provides an electronic device, comprising the radio frequency circuit described in the first aspect of the present invention.

[0010] In a third aspect, an embodiment of the present application provides a radio frequency power adjustment system, comprising a sorting code generation module and the electronic device described in the second aspect of the present invention; the sorting code generation module is used to generate a corresponding sorting code according to the test result of the radio frequency power of the electronic device, and write the sorting code into the electronic device.

[0011] In an embodiment of the present application, the RF power of an electronic device is tested in advance, and a sorting code corresponding to the test RF power is stored in a register of the electronic device. When the RF power of the electronic device needs to be adjusted, the test RF power corresponding to the sorting code is used as a reference for adjustment, thereby improving the adjustment accuracy of the RF power. There is no need to adjust the chip of the electronic device, and the implementation method is simple. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a structural schematic diagram of a radio frequency circuit in an embodiment of the present application.

[0013] Figure 2 It is a structural schematic diagram of another radio frequency circuit in an embodiment of the present application.

[0014] Figure 3 It is a structural schematic diagram of another radio frequency circuit in an embodiment of the present application.

[0015] Figure 4 It is a structural diagram of a radio frequency circuit in another embodiment of the present application.

[0016] Figure 5 It is a schematic diagram of an electronic device in an embodiment of the present application.

[0017] Figure 6 It is a schematic diagram of the hardware structure of the electronic device in the embodiment of the present application. DETAILED DESCRIPTION

[0018] The following will be combined with the drawings in the embodiments of the present application to clearly describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments in the present application belong to the scope of protection of this application.

[0019] The terms "first", "second", etc. in the specification and claims of the present application are used to distinguish similar objects, and are not used to describe a specific order or sequence. It should be understood that the data used in this way can be interchangeable under appropriate circumstances, so that the embodiments of the present application can be implemented in an order other than those illustrated or described here, and the objects distinguished by "first", "second", etc. are generally of one type, and the number of objects is not limited. For example, the first object can be one or more. In addition, "and / or" in the specification and claims represents at least one of the connected objects, and the character " / " generally indicates that the objects associated with each other are in an "or" relationship.

[0020] The radio frequency circuit provided in the embodiment of the present application is described in detail below through specific embodiments and their application scenarios in conjunction with the accompanying drawings.

[0021] like Figure 1 As shown, this embodiment introduces a radio frequency circuit, which includes a radio frequency component, a coupling path attenuation control network, a register, and a control module.

[0022] The RF component is used to transmit signals according to the RF power of the electronic device. The RF component includes a RF transceiver, a coupler and a RF antenna connected in sequence.

[0023] The coupling path attenuation control network is used to adjust the radio frequency power of the electronic device. One end of the coupling path attenuation control network is connected to the radio frequency transceiver, and the other end of the coupling path attenuation control network is connected to the coupler.

[0024] The register is used to store a sorting code corresponding to the test radio frequency power of the electronic device.

[0025] The control module is connected to the coupling path attenuation control network and the register. The control module is used to obtain the sorting code from the register, send a first control signal to the coupling path attenuation control network according to a preset radio frequency power control strategy and the sorting code, and control the coupling path attenuation control network to adjust the radio frequency power of the electronic device based on the test radio frequency power corresponding to the sorting code.

[0026] The RF transceiver is used to output RF signals to the coupler. The output end of the coupler is connected to the RF antenna and is used to transmit RF signals to the RF antenna so that the RF antenna outputs RF signals.

[0027] The coupling path attenuation control network can adjust the RF power of the electronic device. The coupling path attenuation control network has different conduction states, such as a first conduction state and a second conduction state. When the coupling path attenuation control network is in the first conduction state, the power of the RF signal output by the coupler to the RF transceiver is adjusted, so that the RF transceiver controls the RF antenna to transmit the signal at the first power. When the coupling path attenuation control network is in the second conduction state, the power of the RF signal output by the coupler to the RF transceiver is adjusted, so that the RF transceiver controls the RF antenna to transmit the signal at the second power.

[0028] During the production process of electronic devices, the radio frequency power of the electronic devices is tested. A corresponding sorting code is generated according to the tested radio frequency power of the electronic devices, and the sorting code is stored in a register of the electronic devices. For example, the radio frequency power of 5,000 electronic devices can be tested, the tested radio frequency powers are sorted, and a sorting code for each electronic device is generated according to the sorting results.

[0029] The control module can read the sorting code from the register, and when the RF power of the electronic device needs to be adjusted, the first control signal is sent to the coupling path attenuation control network according to the preset RF power control strategy and the sorting code. For example, for electronic devices with sorting codes in the top 100, the RF power is reduced by 0.2dB. For electronic devices with sorting codes in the range of 101-500, the RF power is reduced by 0.1dB. For electronic devices with sorting codes in the range of 501-4500, the RF power remains unchanged. For electronic devices with sorting codes in the range of 4501-4900, the RF power is increased by 0.1dB. For electronic devices with sorting codes in the range of 4901-5000, the RF power is increased by 0.2dB.

[0030] This embodiment tests the RF power of the electronic device in advance, stores a sorting code corresponding to the test RF power in a register of the electronic device, and adjusts the RF power of the electronic device based on the test RF power corresponding to the sorting code when it is necessary to adjust the RF power of the electronic device, thereby improving the adjustment accuracy of the RF power. There is no need to adjust the chip of the electronic device, and the implementation method is simple.

[0031] Alternatively, if Figure 2 As shown, the coupling path attenuation control network includes a switch module and at least two branches, and the attenuation values ​​of different branches are different. The switch module is connected to the control module, and the switch module is used to be in a corresponding conduction state according to a first control signal, so that the first target branch of the at least two branches is connected to the radio frequency transceiver and the coupler.

[0032] The control module can control the conduction state of the switch module to connect different branches to the RF transceiver and the coupler. Due to the different attenuation values ​​of different branches, the power of the RF signal output from the coupler to the RF transceiver is different, thereby adjusting the RF power of the RF antenna transmitting signal.

[0033] For example, when the switch module is in the first conduction state, the coupler is connected to the RF transceiver through the first branch among multiple branches, and the power of the RF signal output by the coupler to the RF transceiver is adjusted, so that the RF transceiver controls the RF antenna to transmit the signal at the first power.

[0034] When the switch module is in the second conducting state, the coupler is connected to the RF transceiver through a second branch of the multiple branches, and the power of the RF signal output by the coupler to the RF transceiver is adjusted, so that the RF transceiver controls the RF antenna to transmit the signal at a second power different from the first power.

[0035] The number of branches included in the coupling path attenuation control network can be set according to actual needs. By increasing the number of branches included in the coupling path attenuation control network, the adjustment accuracy of the radio frequency power of the electronic device can be improved.

[0036] In this embodiment, at least two branches are set in the coupling path attenuation control network, and the control module is used to control the conduction state of the switch module, so that the coupler can be connected to the RF transceiver through different branches, thereby controlling the power of the RF signal output by the coupler to the RF transceiver, so that the RF transceiver controls the RF antenna to transmit signals with different RF powers, thereby achieving the purpose of adjusting the RF power of the electronic device.

[0037] Alternatively, if Figure 3 As shown, the switch module includes a first RF switch and a second RF switch. The first end of the first RF switch is connected to the RF transceiver, the second end of the first RF switch is connected to the first end of the branch, and the first RF switch is connected to the control module. The first end of the second RF switch is connected to the second end of the branch, the second end of the second RF switch is connected to the coupler, and the second RF switch is connected to the control module.

[0038] The first RF switch is arranged between the RF transceiver and each branch, and is used to control the connection state between each branch and the RF transceiver. The second RF switch is arranged between the coupler and each branch, and is used to control the connection state between each branch and the coupler.

[0039] The control module can control the conduction state of the first RF switch and the second RF switch. The control module can send a control signal to the first RF switch and the second RF switch to control the action of the first RF switch so that the first branch is connected to the RF transceiver, and at the same time control the action of the second RF switch so that the first branch is connected to the coupler. In this case, the second branch will not be connected to the RF transceiver and the coupler. The control module can also send another control signal to the first RF switch and the second RF switch to control the action of the first RF switch so that the second branch is connected to the RF transceiver, and at the same time control the action of the second RF switch so that the second branch is connected to the coupler. In this case, the first branch will not be connected to the RF transceiver and the coupler.

[0040] In this embodiment, a first RF switch is set between the RF transceiver and each branch, and a second RF switch is set between the coupler and each branch. The first RF switch and the second RF switch are controlled simultaneously by a control module, and one branch is selected from multiple branches to connect the coupler and the RF transceiver, while other branches are isolated to avoid interference from other branches.

[0041] Alternatively, if Figure 4 As shown, the first branch and the second branch are a π-type attenuation network. The π-type attenuation network includes three resistors, and the resistance values ​​of the three resistors can be determined according to the attenuation values ​​actually required.

[0042] The number of branches can be increased according to actual needs. In one example, the coupling path attenuation control network includes five groups of π-type attenuation networks. The attenuation values ​​corresponding to the above five groups of π-type attenuation networks are 0.8dB, 0.9dB, 1.0dB, 1.1dB, and 1.2dB, respectively. The first RF switch and the second RF switch also have five gears, and each gear corresponds to a group of π-type attenuation networks. The 1.0dB gear corresponds to the test RF power. When no additional control of the RF power is required, select the attenuation value of the 1.0dB gear. When it is necessary to increase the RF power by 0.2dB, select the attenuation value of the 1.2dB gear. When it is necessary to reduce the RF power by 0.2dB, select the attenuation value of the 0.8dB gear.

[0043] Optionally, the control module is used to control a second target branch of at least two branches to be connected to the coupler and the RF transceiver without sending a first control signal to the coupling path attenuation control network, and the second target branch will not adjust the RF power of the electronic device.

[0044] When the RF power does not need to be adjusted, select the second target branch to connect the coupler and the RF transceiver so that the RF components can work normally. For example, the coupling path attenuation control network includes 5 groups of π-type attenuation networks, and the corresponding attenuation values ​​are 0.8dB, 0.9dB, 1.0dB, 1.1dB, and 1.2dB, respectively. The 1.0dB position corresponds to the test RF power, so the second target branch is the branch corresponding to the 1.0dB position.

[0045] Optionally, the control module includes a processor and a GPIO (General-purpose input / output) controller. One end of the GPIO controller is connected to the coupling path attenuation control network. One end of the processor is connected to the register, and the other end of the processor is connected to the other end of the GPIO controller. The processor is used to obtain the sorting code from the register, and send a second control signal to the GPIO according to the preset RF power control strategy and the sorting code, so as to control the GPIO controller to send the first control signal to the coupling path attenuation control network.

[0046] The processor is used to execute a preset RF power control strategy. According to the preset RF power control strategy and the sorting code stored in the register, the coupling path attenuation control network is controlled through the GPIO controller, so that the coupling path attenuation control network adjusts the RF power of the electronic device based on the test RF power corresponding to the sorting code.

[0047] Optionally, the GPIO controller is a register in a chip of the electronic device.

[0048] The chip can be an independent display chip in an electronic device. The GPIO controller can reuse registers in an independent display chip. The GPIO controller can also reuse idle registers in an electronic device. The GPIO controller can also be a newly added component in an electronic device.

[0049] Optionally, the register is a register in a chip of the electronic device.

[0050] The register may reuse the register in the independent display chip. The register may also reuse the idle register in the electronic device. The register may also be a newly added component in the electronic device.

[0051] This embodiment increases the utilization rate of the registers in the chip and reduces the cost of the electronic device by multiplexing the registers in the chip of the electronic device.

[0052] Alternatively, if Figure 4As shown, the RF component also includes a RF amplifier, an input end of the RF amplifier is connected to the RF transceiver, and an output end of the RF amplifier is connected to the coupler.

[0053] The RF amplifier may be a power amplifier. The output end of the RF transceiver is connected to the input end of the RF amplifier, and is used to output the original RF signal to the RF amplifier. The output end of the RF amplifier is connected to the input end of the coupler, and is used to amplify the original RF signal to obtain the target RF signal, and provide the target RF signal to the coupler. The output end of the coupler is connected to the RF antenna, and is used to transmit the target RF signal to the RF antenna, so that the RF antenna sends the target RF signal.

[0054] In this embodiment, the RF component also includes a RF amplifier. The RF transceiver can control the RF antenna power by adjusting the RF signal output by the RF amplifier, thereby facilitating the adjustment of the RF power of the electronic device.

[0055] like Figure 4 The RF circuit shown, M0 corresponds to the factory end, and is used to test the RF power of electronic equipment in the SMT (Surface Mount Technology) section of the production line, generate a sorting code based on the RF power, and write the sorting code into the register RF9. The processor S0 can read the sorting code from the register RF9, and send a second control signal to the GPIO controller RF8 according to the preset RF power control strategy. The GPIO controller RF8 sends a first control signal to the RF switch RF5 and the RF switch RF7 according to the second control signal, controls a branch in the π attenuation group RF6 to connect with the coupler RF3 and the RF transceiver RF1, adjusts the power of the RF signal received by the RF transceiver RF1, and then adjusts the RF power of the RF antenna RF4.

[0056] Alternatively, if Figure 5 As shown, an embodiment of the present application further provides an electronic device 500, including a processor 501 and a memory 502, and the electronic device includes the radio frequency circuit described in any embodiment of the present invention.

[0057] The present application also provides a radio frequency power adjustment system, including a sorting code generation module and the electronic device provided in the above embodiment. The sorting code generation module is used to generate a corresponding sorting code according to the test result of the radio frequency power of the electronic device, and write the sorting code into the electronic device.

[0058] It should be noted that the electronic devices in the embodiments of the present application include the mobile electronic devices and non-mobile electronic devices mentioned above.

[0059] Figure 6 A schematic diagram of the hardware structure of an electronic device to implement an embodiment of the present application.

[0060] The electronic device 1000 includes but is not limited to: a radio frequency unit 1001, a network module 1002, an audio output unit 1003, an input unit 1004, a sensor 1005, a display unit 1006, a user input unit 1007, an interface unit 1008, a memory 1009, and a processor 1010 and other components.

[0061] Those skilled in the art will appreciate that the electronic device 1000 may also include a power source (such as a battery) for supplying power to each component, and the power source may be logically connected to the processor 1010 through a power management system, thereby implementing functions such as managing charging, discharging, and power consumption management through the power management system. Figure 6 The electronic device structure shown in the figure does not constitute a limitation on the electronic device. The electronic device may include more or fewer components than shown in the figure, or combine certain components, or arrange the components differently, which will not be described in detail here.

[0062] The radio frequency unit 1001 may include the radio frequency circuit described in any embodiment of the present invention.

[0063] It should be understood that in the embodiment of the present application, the input unit 1004 may include a graphics processor (Graphics Processing Unit, GPU) 10041 and a microphone 10042, and the graphics processor 10041 processes the image data of the static picture or video obtained by the image capture device (such as a camera) in the video capture mode or the image capture mode. The display unit 1006 may include a display panel 10061, and the display panel 10061 may be configured in the form of a liquid crystal display, an organic light emitting diode, etc. The user input unit 1007 includes a touch panel 10071 and at least one of other input devices 10072. The touch panel 10071 is also called a touch screen. The touch panel 10071 may include two parts: a touch detection device and a touch controller. Other input devices 10072 may include, but are not limited to, a physical keyboard, function keys (such as volume control keys, switch keys, etc.), a trackball, a mouse, and a joystick, which will not be repeated here.

[0064] The memory 1009 can be used to store software programs and various data. The memory 1009 may mainly include a first storage area for storing programs or instructions and a second storage area for storing data, wherein the first storage area may store an operating system, an application program or instructions required for at least one function (such as a sound playback function, an image playback function, etc.), etc. In addition, the memory 1009 may include a volatile memory or a non-volatile memory, or the memory 1009 may include both volatile and non-volatile memories. Among them, the non-volatile memory may be a read-only memory (ROM), a programmable read-only memory (PROM), an erasable programmable read-only memory (EPROM), an electrically erasable programmable read-only memory (EEPROM), or a flash memory. The volatile memory may be a random access memory (RAM), a static random access memory (SRAM), a dynamic random access memory (DRAM), a synchronous dynamic random access memory (SDRAM), a double data rate synchronous dynamic random access memory (DDRSDRAM), an enhanced synchronous dynamic random access memory (ESDRAM), a synchronous link dynamic random access memory (SLDRAM) and a direct memory bus random access memory (DRRAM). The memory 1009 in the embodiment of the present application includes but is not limited to these and any other suitable types of memory.

[0065] The processor 1010 may include one or more processing units; optionally, the processor 1010 integrates an application processor and a modem processor, wherein the application processor mainly processes operations related to an operating system, a user interface, and application programs, and the modem processor mainly processes wireless communication signals, such as a baseband processor. It is understandable that the modem processor may not be integrated into the processor 1010.

[0066] It should be noted that, in this article, the terms "comprise", "include" or any other variant thereof are intended to cover non-exclusive inclusion, so that the process, method, article or device including a series of elements includes not only those elements, but also includes other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise one..." do not exclude the presence of other identical elements in the process, method, article or device including the element. In addition, it should be pointed out that the scope of the methods and devices in the embodiments of the present application is not limited to performing functions in the order shown or discussed, and may also include performing functions in a substantially simultaneous manner or in reverse order according to the functions involved, for example, the described method may be performed in an order different from that described, and various steps may also be added, omitted, or combined. In addition, the features described with reference to certain examples may be combined in other examples.

[0067] Through the description of the above implementation methods, those skilled in the art can clearly understand that the above-mentioned embodiment methods can be implemented by means of software plus a necessary general hardware platform, and of course by hardware, but in many cases the former is a better implementation method. Based on such an understanding, the technical solution of the present application, or the part that contributes to the prior art, can be embodied in the form of a computer software product, which is stored in a storage medium (such as ROM / RAM, a disk, or an optical disk), and includes a number of instructions for a terminal (which can be a mobile phone, a computer, a server, or a network device, etc.) to execute the methods described in each embodiment of the present application.

[0068] The embodiments of the present application are described above in conjunction with the accompanying drawings, but the present application is not limited to the above-mentioned specific implementation methods. The above-mentioned specific implementation methods are merely illustrative and not restrictive. Under the guidance of the present application, ordinary technicians in this field can also make many forms without departing from the purpose of the present application and the scope of protection of the claims, all of which are within the protection of the present application.

Claims

1. A radio frequency circuit, characterized in that: include: A radio frequency component, used to transmit a signal according to the radio frequency power of the electronic device, the radio frequency component comprising a radio frequency transceiver, a coupler and a radio frequency antenna connected in sequence; A coupling path attenuation control network, used for adjusting the radio frequency power of the electronic device, wherein one end of the coupling path attenuation control network is connected to the radio frequency transceiver, and the other end of the coupling path attenuation control network is connected to the coupler; A register for storing a sort code corresponding to a test radio frequency power of the electronic device; A control module is connected to the coupling path attenuation control network and the register, and is used to obtain the sorting code from the register, send a first control signal to the coupling path attenuation control network according to a preset RF power control strategy and the sorting code, and control the coupling path attenuation control network to adjust the RF power of the electronic device based on the test RF power corresponding to the sorting code.

2. The circuit according to claim 1, characterized in that The coupling path attenuation control network includes a switch module and at least two branches, and different branches have different attenuation values; The switch module is connected to the control module, and is used for being in a corresponding on state according to a first control signal, so that a first target branch of at least two branches is connected to the RF transceiver and the coupler.

3. The circuit according to claim 2, characterized in that The switch module includes a first radio frequency switch and a second radio frequency switch; A first end of the first RF switch is connected to the RF transceiver, a second end of the first RF switch is connected to the first end of the branch, and the first RF switch is connected to the control module; The first end of the second RF switch is connected to the second end of the branch, the second end of the second RF switch is connected to the coupler, and the second RF switch is connected to the control module.

4. The circuit according to claim 2, characterized in that The branch is a π-type attenuation network.

5. The circuit according to claim 2, characterized in that The control module is used to control a second target branch of at least two of the branches to be connected to the coupler and the RF transceiver without sending a first control signal to the coupling path attenuation control network, and the second target branch will not adjust the RF power of the electronic device.

6. The circuit according to claim 1, characterized in that The control module includes a processor and a GPIO controller; One end of the GPIO controller is connected to the coupling path attenuation control network; One end of the processor is connected to the register, and the other end of the processor is connected to the other end of the GPIO controller. The processor is used to obtain the sorting code from the register, and send a second control signal to the GPIO according to the preset RF power control strategy and the sorting code to control the GPIO controller to send the first control signal to the coupling path attenuation control network.

7. The circuit according to claim 6, characterized in that The GPIO controller is a register in the chip of the electronic device.

8. The circuit according to claim 1, characterized in that The register is a register in a chip of the electronic device.

9. An electronic device, characterized in that: The invention comprises the radio frequency circuit as described in any one of claims 1 to 8.

10. A radio frequency power adjustment system, characterized in that: An electronic device comprising a sorting code generating module and claim 9; The sorting code generating module is used to generate a corresponding sorting code according to the test result of the radio frequency power of the electronic device, and write the sorting code into the electronic device.

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