CN114679197A - Radio frequency circuit, capacitance value control method thereof and electronic equipment - Google Patents
Radio frequency circuit, capacitance value control method thereof and electronic equipment Download PDFInfo
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- H—ELECTRICITY
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- H04B1/38—Transceivers, i.e. devices in which transmitter and receiver form a structural unit and in which at least one part is used for functions of transmitting and receiving
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Abstract
The application discloses a radio frequency circuit, a capacitance value control method thereof and electronic equipment, and belongs to the technical field of communication. The radio frequency circuit comprises a variable capacitor module, the variable capacitor module comprises a radio frequency signal input end and a radio frequency signal output end, the variable capacitor module comprises a first variable capacitor and a second variable capacitor, a first end of the first variable capacitor and a first end of the second variable capacitor are both in controllable connection with the radio frequency signal input end, and a second end of the first variable capacitor and a second end of the second variable capacitor are both in controllable connection with the radio frequency signal output end; the first variable capacitor and the second variable capacitor have different capacity intervals, and the radio frequency circuit can selectively switch on the first variable capacitor or the second variable capacitor.
Description
Technical Field
The application belongs to the technical field of communication, and particularly relates to a radio frequency circuit, a capacitance value control method thereof and electronic equipment.
Background
In mobile phone design, different frequency points generally require different matching circuits, so that the performance can be optimal when the different frequency points work, along with the development of communication, the design requirement on the circuit is higher and higher, and the problem of time sequence of the circuit is guaranteed, which is always the guarantee of reliability in circuit design.
The variable capacitor design in the circuit design also needs to meet the timing requirement, namely when a signal passes through the variable capacitor, the variable capacitor needs to change the signal to a target capacitance value in advance, and effective transmission of signal quality can be guaranteed. However, the variable capacitor needs to start to change before the RF signal for a period of time to meet all timing requirements, and the larger the variable capacitor change range is, the longer the variable capacitor needs to change, that is, the longer the overshoot time needs to be, the longer the time needed to change from the current capacity to the target capacity is, the more the timing cannot meet the standard specification, and the reliability problem is likely to occur.
Disclosure of Invention
The present embodiment aims to provide a radio frequency circuit, a capacitance value control method thereof, and an electronic device, which can solve the problem of low reliability of the existing radio frequency circuit.
In a first aspect, an embodiment of the present application provides a radio frequency circuit, where the circuit includes a variable capacitor module, where the variable capacitor module includes a radio frequency signal input end and a radio frequency signal output end, the variable capacitor module includes a first variable capacitor and a second variable capacitor, a first end of the first variable capacitor and a first end of the second variable capacitor are both controllably connected to the radio frequency signal input end, and a second end of the first variable capacitor and a second end of the second variable capacitor are both controllably connected to the radio frequency signal output end; the first variable capacitor and the second variable capacitor have different capacity intervals, and the radio frequency circuit can selectively switch on the first variable capacitor or the second variable capacitor.
In a second aspect, an embodiment of the present application provides a capacitance control method for a radio frequency circuit, where the method includes: acquiring a target frequency band of the radio frequency circuit; determining a target capacitance value of the variable capacitance module corresponding to the target frequency band according to the target frequency band; determining a required target working state of the variable capacitor module according to the target capacitance value and the capacity interval of each variable capacitor; under the condition that the variable capacitor module is in a first working state, the radio frequency circuit is switched on through the first variable capacitor; and under the condition that the variable capacitor module is in a second working state, the radio frequency circuit is switched on through the second variable capacitor.
In a third aspect, an embodiment of the present application provides an electronic device, which includes the radio frequency circuit described in the first aspect.
In a fourth aspect, the present application provides a readable storage medium, on which a program or instructions are stored, which when executed by a processor implement the steps of the method according to the second aspect.
In a fifth aspect, an embodiment of the present application provides a chip, where the chip includes a processor and a communication interface, where the communication interface is coupled to the processor, and the processor is configured to execute a program or instructions to implement the method according to the first aspect.
In the embodiment of the application, the variable capacitor in the radio frequency circuit is changed into the variable capacitor module consisting of the variable capacitors in the two small interval capacity intervals of the first variable capacitor and the second variable capacitor, so that the sectional distribution of the capacitance value can be realized, the variation range of a single capacitor is small, the time of capacitance variation is shortened, and the reliability of the circuit is improved.
Drawings
Fig. 1 is a schematic structural diagram of a radio frequency circuit provided in this embodiment;
fig. 2 is another schematic structural diagram of a radio frequency circuit provided in this embodiment;
fig. 3 is a flowchart illustrating steps of a method for controlling capacitance of a radio frequency circuit according to this embodiment;
fig. 4 is a content diagram of a preset list provided in the present embodiment;
FIG. 5 is a flowchart illustrating a method for controlling capacitance of an RF circuit according to another embodiment;
fig. 6 is a schematic structural diagram of an electronic device provided in this embodiment;
fig. 7 is a schematic diagram of a hardware structure of an electronic device implementing an embodiment of the present application.
Detailed Description
The technical solutions in the embodiments of the present application will be described clearly below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some, but not all, embodiments of the present application. All other embodiments that can be derived by one of ordinary skill in the art from the embodiments given herein are intended to be within the scope of the present disclosure.
The terms first, second and the like in the description and in the claims of the present application are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It will be appreciated that the data so used may be interchanged under appropriate circumstances such that embodiments of the application may be practiced in sequences other than those illustrated or described herein, and that the terms "first," "second," and the like are generally used herein in a generic sense and do not limit the number of terms, e.g., the first term can be one or more than one. In addition, "and/or" in the specification and claims means at least one of connected objects, a character "/" generally means that a preceding and succeeding related objects are in an "or" relationship.
The radio frequency circuit, the capacitance value control method thereof, and the electronic device provided in the embodiments of the present application are described in detail below with reference to the accompanying drawings through specific embodiments and application scenarios thereof.
The variable capacitor is a capacitor with a variable capacitance value, for example, the capacitance value can be varied within a range of 1-24 PF. The power supply module can be adopted to output voltages with different sizes to control the capacitance value of the variable capacitor, so that different capacitance values can be accessed into the circuit.
In one example, assuming that the time required for a variable capacitor to change from a maximum capacitance value to a minimum capacitance value is 95 μ s, the variable capacitor needs to change 95 μ s before the radio frequency signal is accessed to meet all timing requirements, but the communication system of the global system for mobile communication and the like is optimized to the optimal level that the variable capacitor starts to change 40 μ s before the radio frequency signal and then 55 μ s before the radio frequency signal can meet the timing requirements. That is, in this 55 μ s, the capacitance value of the variable capacitance access circuit is not correct. This results in a less reliable radio frequency circuit.
In view of the above problems, the present embodiment provides a radio frequency circuit, a capacitance value control method thereof, and an electronic device, in which a structure of a variable capacitor module in the radio frequency circuit is improved, and a plurality of variable capacitors are arranged in segments, so that a variation range of a single capacitor is small, thereby reducing a time for a variation of the capacitor, and improving reliability of the circuit.
Referring to fig. 1, the radio frequency circuit provided in this embodiment includes a variable capacitor module 101, where the variable capacitor module 101 includes a radio frequency signal input end and a radio frequency signal output end, the variable capacitor module includes a first variable capacitor 1002 and a second variable capacitor 1003, a first end of the first variable capacitor 1002 and a first end of the second variable capacitor 1003 are both controllably connected to the radio frequency signal input end, and a second end of the first variable capacitor 1002 and a second end of the second variable capacitor 1003 are both controllably connected to the radio frequency signal output end.
In this embodiment, the rf signal input terminal is used for inputting rf signals, and the rf signals may be signals of various communication frequency bands, for example, B1, B3, B8, and B7 frequency bands. The radio frequency signal output end is used for outputting a corresponding radio frequency signal.
In this embodiment, in order to realize controllable connection between the variable capacitor and the rf signal input terminal and the rf signal output terminal, switch elements are respectively disposed between the rf signal input terminal and the first variable capacitor 1002, between the rf signal input terminal and the second variable capacitor 1003, between the rf signal output terminal and the first variable capacitor 1002, and between the rf signal input terminal and the second variable capacitor 1003.
In one example, the switch element may be a transistor, a switching diode, a thyristor, or the like, which may implement on/off control of the circuit. In one example, the switch members disposed at the first end and the second end of each variable capacitor may be two separate switches, or may be switches synchronized with each other, for example, the switch members disposed at the first end and the second end of the variable capacitor are two contacts of a relay switch, so that synchronization of one variable capacitor may be achieved.
In this embodiment, referring to fig. 2, the switch of the rf circuit may include: a first switch 1004, a second switch 1005, a third switch 1006, and a fourth switch 1007; a first terminal of the first variable capacitor 1002 is connected to the rf signal input terminal through the first switch 1004, a second terminal of the first variable capacitor 1002 is connected to the rf signal output terminal through the second switch 1005, a first terminal of the second variable capacitor 1003 is connected to the rf signal input terminal through the third switch 1006, and a second terminal of the second variable capacitor 1003 is connected to the rf signal output terminal through the fourth switch 1007. An independent switch element is arranged between each variable capacitor and the radio frequency signal input end and the radio frequency signal output end, so that the variable capacitors of the access circuit can be accurately controlled.
In this embodiment, the radio frequency circuit may further include a fifth switch and a sixth switch (not shown in the figure), the fifth switch and the sixth switch are single-pole double-throw switches, wherein a first end of the fifth switch is a moving contact of the single-pole double-throw switch, a second end and a third end of the fifth switch are stationary contacts of the single-pole double-throw switch, a first end of the fifth switch is connected to the radio frequency signal input terminal, a second end of the fifth switch is connected to the first end of the first variable capacitor, and a third end of the fifth switch is connected to the first end of the second variable capacitor.
The first end and the second end of the sixth switch are fixed contacts of a single-pole double-throw switch, the third end of the sixth switch is a moving contact of the single-pole double-throw switch, the first end of the sixth switch is connected with the second end of the first variable capacitor, the second end of the sixth switch is connected with the second end of the second variable capacitor, and the third end of the sixth switch is connected with the radio-frequency signal output end.
In this embodiment, a single-pole double-throw switch is connected to the first end of the first variable capacitor, the first end of the second variable capacitor, and the radio frequency signal input terminal, and another single-pole double-throw switch is connected to the second end of the second variable capacitor, the second end of the first variable capacitor, and the radio frequency signal output terminal. The signal control of the circuit can be simplified, the switching devices can be saved, and the cost can be reduced.
In this embodiment, the first variable capacitor and the second variable capacitor have different capacitance intervals, and the radio frequency circuit can selectively turn on the first variable capacitor or the second variable capacitor. For example, the capacitance range of the first variable capacitor is 1-14 PF, the capacitance range of the second variable capacitor is 14-24 PF, and the capacitance value requirements of different circuits can be met by combining the two capacitors, and meanwhile, the capacitance value change time of the variable capacitor can be shortened.
In an example, the variable capacitor module of the present embodiment may also include a plurality of variable capacitors, and the plurality of variable capacitors may have different capacitance intervals, for example, the variable capacitor module includes 3 variable capacitors connected in parallel, 4 variable capacitors connected in parallel, and the like, so that the capacitance range of the variable capacitor module may be further expanded, and the variable capacitor module is suitable for circuits with larger capacitance requirements.
In this embodiment, each variable capacitor is configured to turn on the rf circuit at a predetermined frequency band. For example, in a case where the variable capacitor module includes a first variable capacitor and a second variable capacitor, the first variable capacitor is configured to enter the rf circuit in the B8 frequency band, that is, when two ends of the first variable capacitor form a transmission path with the rf signal input end and the rf signal output end, and two ends of the second variable capacitor are disconnected from the rf signal input end and the rf signal output end. The second variable capacitor is configured to enter the rf circuit in the B7 frequency band, that is, when two ends of the second variable capacitor form a transmission path with the rf signal input end and the rf signal output end, and two ends of the first variable capacitor are disconnected with the rf signal input end and the rf signal output end.
In this embodiment, referring to fig. 1, the radio frequency circuit further includes a control module, where the control module is configured to generate a control signal, the control module is connected to a control interface of the variable capacitor module, the control interface is configured to receive the control signal, and the control signal is configured to control to switch on the first variable capacitor or the second variable capacitor.
For example, if the switch device is a switching diode, the control signal may be a diode conducting signal, and is used to implement that the corresponding first variable capacitor or second variable capacitor forms a transmission path with the rf signal input terminal and the rf signal output terminal to connect the rf circuit.
In the embodiment, the variable capacitor in the radio frequency circuit is changed into the variable capacitor module consisting of the variable capacitors between the first variable capacitor and the second variable capacitor, so that the partition distribution of the capacitance value can be realized, the variation range of a single capacitor is small, the time of capacitance variation is shortened, and the reliability of the circuit is improved.
The present embodiment further provides a capacitance value control method of a radio frequency circuit, and referring to fig. 3, the method includes the following steps:
s301, acquiring a target frequency band of the radio frequency circuit.
In an example, the target frequency band of the radio frequency circuit may be obtained by detecting communication data used by the terminal device, and identifying a frequency band currently used by the terminal device and a frequency band to be used at the next time by obtaining frequency band information in the communication data, where the frequency band to be used at the next time is the target frequency band. For example, the frequency band at the current time is B8, when it is detected that the network to which the terminal device is connected changes, that is, the frequency band information in the communication data changes, and the frequency band at the next time is B7, the target frequency band is B7.
It should be noted that, since the communication data of the terminal device may change, in order to detect whether the variable capacitor needs to be switched, after the target frequency band of the radio frequency circuit is acquired, the method further includes: acquiring a current frequency band of a radio frequency circuit; under the condition that the current frequency band is the same as the target frequency band, determining a capacitance value corresponding to the current frequency band as a target capacitance value; i.e. keeping the variable capacitance of the currently connected radio frequency circuit unchanged. And under the condition that the current frequency band is different from the target frequency band, determining a target capacitance value of the variable capacitance module corresponding to the target frequency band according to the target frequency band. That is, the corresponding variable capacitor is reselected according to the target frequency band, and the variable capacitor may be the current variable capacitor or a variable capacitor different from the current variable capacitor.
S302, determining a target capacitance value of the variable capacitance module corresponding to the target frequency band according to the target frequency band.
In this embodiment, different frequency band information corresponds to different capacitance values of the variable capacitor one to one, and the method for determining the target capacitance value corresponding to the target frequency band includes: and acquiring a preset list, and determining a target capacitance value of the variable capacitor module corresponding to the target frequency band according to the target frequency band and the preset list. The preset list stores a one-to-one correspondence relationship between signal frequency bands and capacitance values of the variable capacitors.
Referring to fig. 4, fig. 4 shows the content of the preset list, where the capacitance value of the variable capacitor corresponding to the frequency band B1 is 10PF, the capacitance value of the variable capacitor corresponding to the frequency band B3 is 8PF, the capacitance value of the variable capacitor corresponding to the frequency band B8 is 3PF, and the capacitance value of the variable capacitor corresponding to the frequency band B7 is 20 PF.
For example, if the frequency band of the current terminal device is B8, it may be determined that the capacitance value of the variable capacitor that needs to be connected in the current circuit is 3 PF.
And S303, determining a required target working state of the variable capacitor module according to the target capacitance value and the capacity interval of each variable capacitor.
In this embodiment, the variable capacitor module includes a first variable capacitor and a second variable capacitor, and the capacitance intervals of the variable capacitors are different, so that in this embodiment, it is required to determine that the target working state of the variable capacitor module is different in different working states according to the target capacitance value and the capacitance interval of each variable capacitor, and the target variable capacitors required by the variable capacitor module are different.
Under the condition that the variable capacitor module is in a first working state, the radio frequency circuit is connected through the first variable capacitor; and under the condition that the variable capacitor module is in the second working state, the radio frequency circuit is switched on through the second variable capacitor.
For example, as shown in fig. 2, the radio frequency circuit includes a first variable capacitor and a second variable capacitor, a capacity interval of the first variable capacitor is 1 to 14PF, a capacity interval of the second variable capacitor is 14 to 24PF, and at this time, a frequency band of the terminal device is B8, it can be determined that a target capacity value that needs to be accessed in the current circuit is 3 PF. Then the variable capacitance module is in the first working state at this time, and the first variable capacitance is set as the target variable capacitance. Similarly, when the target capacitance value is 20PF, the variable capacitor module is in the second operating state, and the second variable capacitor is set as the target variable capacitor, which is the first variable capacitor or the second variable capacitor that is connected to the rf circuit.
In this embodiment, after determining the required target operating state of the variable capacitor module, the control module further generates a control signal according to the required target operating state of the variable capacitor module to control the switch to switch on the transmission path between the target variable capacitor and the rf signal input end and the rf signal output end.
Continuing the above example, when the target variable capacitor is the first variable capacitor, the variable capacitor module is in the first operating state, and generates the first control signal, where the first control signal is used to control the first switch 1004 and the second switch corresponding to the first variable capacitor to be closed. That is, the first control signal is used to control the first variable capacitor to form a transmission path with the rf signal input terminal and the rf signal output terminal.
And under the condition that the target variable capacitor is a second variable capacitor, the variable capacitor module is in a second working state, and a second control signal is generated and used for controlling a third switch and a fourth switch which correspond to the second variable capacitor to be closed. That is, the second control signal is used to control the second variable capacitor to form a transmission path with the rf signal input terminal and the rf signal output terminal.
It should be noted that, in order to further shorten the capacitance change time of the variable capacitor, after determining the required target operating state of the variable capacitor module, the present embodiment further includes: acquiring an initial capacitance value of the first variable capacitor or the second variable capacitor corresponding to the target working state; and adjusting the first variable capacitor or the second variable capacitor to a target working state according to the initial capacitance value and the target capacitance value.
In this embodiment, the initial capacitance value may be a middle value of the capacitance interval of the variable capacitor, for example, when the capacitance interval of the first variable capacitor is 1 to 14PF, the initial capacitance value of the first variable capacitor may be 7PF, and when the capacitance interval of the second variable capacitor is 14 to 24PF, the initial capacitance value of the second variable capacitor may be 19PF, and the time for the capacitance to change from 7PF to 14PF is significantly shorter than the time for the capacitance to change from 1PF to 14PF, that is, setting the initial capacitance value as the middle value of the capacitance interval may further shorten the capacitance change time of the variable capacitor. Of course, the initial capacity value may also be any value within the capacity interval, and the specific situation may be determined according to the actual requirement.
In an example, if the target capacitance value is 20PF, if the variable capacitor module is in the second working state, that is, the radio frequency circuit is turned on through the second variable capacitor, and since the capacitance range of the second variable capacitor is 14 to 24PF, the control module may generate a third control signal, where the third control signal is used to control the target variable capacitor to reach the target capacitance value. That is, the third control signal may control the second variable capacitance to change the capacitance from the initial capacitance value 19PF to 20 PF.
In the embodiment, by acquiring the initial capacitance value of the variable capacitor, when the capacitance value of the variable capacitor is adjusted, the capacitance value can be changed from the initial capacitance value, so that the capacitance change time of the variable capacitor is further shortened, and the reliability of the radio frequency circuit can be improved.
The following describes the present embodiment by taking a terminal device as a mobile phone by way of a specific example, and referring to fig. 5, the specific example of the present embodiment may include:
s501, acquiring current communication frequency band data and a preset list pre-stored in a mobile phone;
s502, under the condition that the current frequency band of the mobile phone is B8, adjusting the capacitance value of the first variable capacitor to 3PF by inquiring a preset list, and controlling the first variable capacitor to access the circuit;
S503, detecting whether the data of the communication frequency band of the mobile phone changes;
s504, under the condition that the data of the communication frequency band of the mobile phone are not changed, the current connection state of the first variable capacitor is kept, and the capacitance value of the first variable capacitor is unchanged;
and S505, under the condition that the communication frequency band data of the mobile phone are changed and the condition that the frequency band data are changed from B8 to B7 is detected, disconnecting the first variable capacitor in the radio frequency circuit, inquiring a preset list to adjust the capacitance value of the second variable capacitor to 20PF, and controlling the second variable capacitor to be accessed into the circuit.
Referring to fig. 6, this embodiment further provides an electronic device, including the radio frequency circuit described in the above embodiment, such as the radio frequency circuit in fig. 1 or fig. 2, and the electronic device may further include a circuit board and a housing, where the radio frequency circuit may be disposed on the circuit board, and the circuit board is disposed in the housing.
Fig. 7 is a schematic diagram of a hardware structure of an electronic device implementing an embodiment of the present application.
The electronic device 700 includes, but is not limited to: a radio frequency unit 701, a network module 702, an audio output unit 703, an input unit 704, a sensor 705, a display unit 706, a user input unit 707, an interface unit 708, a memory 709, and a processor 710.
Those skilled in the art will appreciate that the electronic device 700 may further comprise a power supply (e.g., a battery) for supplying power to various components, and the power supply may be logically connected to the processor 710 via a power management system, so as to implement functions of managing charging, discharging, and power consumption via the power management system. The electronic device structure shown in fig. 7 does not constitute a limitation of the electronic device, and the electronic device may include more or less components than those shown, or combine some components, or arrange different components, and thus, the description is omitted here.
The radio frequency unit 701 may be connected to a radio frequency signal input end or a radio frequency signal output end of the radio frequency circuit of this embodiment, and is configured to receive or transmit a radio frequency signal.
A processor 710, configured to obtain a target frequency band of the radio frequency circuit; determining a target capacitance value of the variable capacitance module corresponding to the target frequency band according to the target frequency band; determining a required target working state of the variable capacitor module according to the target capacitance value and the capacity interval of each variable capacitor; under the condition that the variable capacitor module is in a first working state, the radio frequency circuit is switched on through the first variable capacitor; and under the condition that the variable capacitor module is in a second working state, the radio frequency circuit is switched on through the second variable capacitor.
The processor 710 is further configured to obtain a preset list, where the preset list stores a one-to-one correspondence relationship between signal frequency bands and capacitance values of the variable capacitors; and determining a target capacitance value of the variable capacitance module corresponding to the target frequency band according to the target frequency band and the preset list.
The processor 710 is further configured to, after obtaining the target frequency band of the radio frequency circuit, obtain a current frequency band of the radio frequency circuit; under the condition that the current frequency band is the same as the target frequency band, determining a capacity value corresponding to the current frequency band as a target capacity value; and under the condition that the current frequency band is different from a target frequency band, determining a target capacitance value of the variable capacitance module corresponding to the target frequency band according to the target frequency band.
The processor 710 is further configured to obtain an initial capacitance value of the first variable capacitance or the second variable capacitance corresponding to the target working state; and adjusting the first variable capacitor or the second variable capacitor to the target working state according to the initial capacitance value and the target capacitance value.
In the embodiment, the variable capacitor in the radio frequency circuit is changed into the variable capacitor module consisting of the variable capacitors between the first variable capacitor and the second variable capacitor, so that the partition distribution of the capacitance value can be realized, the variation range of a single capacitor is small, the time of capacitance variation is shortened, and the reliability of the circuit is improved.
It should be understood that, in the embodiment of the present application, the input Unit 704 may include a Graphics Processing Unit (GPU) 7041 and a microphone 7042, and the Graphics processor 7041 processes image data of a still picture or a video obtained by an image capturing device (e.g., a camera) in a video capturing mode or an image capturing mode. The display unit 706 may include a display panel 7061, and the display panel 7061 may be configured in the form of a liquid crystal display, an organic light emitting diode, or the like. The user input unit 707 includes at least one of a touch panel 7071 and other input devices 7072. The touch panel 7071 is also referred to as a touch screen. The touch panel 7071 may include two portions, a touch detection device and a touch controller. Other input devices 7072 may include, but are not limited to, a physical keyboard, function keys (e.g., volume control keys, switch keys, etc.), a trackball, a mouse, and a joystick, which will not be described in further detail herein.
The memory 709 may be used to store software programs as well as various data. The memory 709 may mainly include a first storage area for storing a program or an instruction and a second storage area for storing data, wherein the first storage area may store an operating system, an application program or an instruction (such as a sound playing function, an image playing function, and the like) required by at least one function, and the like. Further, the memory 709 may include volatile memory or nonvolatile memory, or the memory 709 may include both volatile and nonvolatile memory. The non-volatile Memory may be a Read-Only Memory (ROM), a Programmable ROM (PROM), an Erasable PROM (EPROM), an Electrically Erasable PROM (EEPROM), or a flash Memory. The volatile Memory may be a Random Access Memory (RAM), a Static Random Access Memory (Static RAM, SRAM), a Dynamic Random Access Memory (Dynamic RAM, DRAM), a Synchronous Dynamic Random Access Memory (Synchronous DRAM, SDRAM), a Double Data Rate Synchronous Dynamic Random Access Memory (Double Data Rate SDRAM, ddr SDRAM), an Enhanced Synchronous SDRAM (ESDRAM), a Synchronous Link DRAM (SLDRAM), and a Direct Memory bus RAM (DRRAM). The memory 1009 in the embodiments of the present application includes, but is not limited to, these and any other suitable types of memory.
The embodiments of the present application further provide a readable storage medium, where a program or an instruction is stored, and when the program or the instruction is executed by a processor, the program or the instruction implements each process of the embodiment of the capacitance value control method for a radio frequency circuit, and can achieve the same technical effect, and in order to avoid repetition, details are not repeated here.
The processor is the processor in the electronic device described in the above embodiment. The readable storage medium includes a computer readable storage medium, such as a computer read only memory ROM, a random access memory RAM, a magnetic or optical disk, and the like.
The embodiment of the present application further provides a chip, where the chip includes a processor and a communication interface, the communication interface is coupled to the processor, and the processor is configured to execute a program or an instruction to implement each process of the embodiment of the capacitance value control method for a radio frequency circuit, and can achieve the same technical effect, and in order to avoid repetition, the description is omitted here.
It should be understood that the chips mentioned in the embodiments of the present application may also be referred to as system-on-chip, system-on-chip or system-on-chip, etc.
Embodiments of the present application provide a computer program product, where the program product is stored in a storage medium, and the program product is executed by at least one processor to implement the processes of the above embodiment of the capacity value control method for a radio frequency circuit, and achieve the same technical effects, and in order to avoid repetition, details are not repeated here.
It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element. Further, it should be noted that the scope of the methods and apparatus of the embodiments of the present application is not limited to performing the functions in the order illustrated or discussed, but may include performing the functions in a substantially simultaneous manner or in a reverse order based on the functions involved, e.g., the methods described may be performed in an order different than that described, and various steps may be added, omitted, or combined. In addition, features described with reference to certain examples may be combined in other examples.
Through the description of the foregoing embodiments, it is clear to those skilled in the art that the method of the foregoing embodiments may be implemented by software plus a necessary general hardware platform, and certainly may also be implemented by hardware, but in many cases, the former is a better implementation. Based on such understanding, the technical solutions of the present application may be embodied in the form of a computer software product, which is stored in a storage medium (such as ROM/RAM, magnetic disk, optical disk) and includes instructions for enabling a terminal (such as a mobile phone, a computer, a server, or a network device) to execute the method according to the embodiments of the present application.
While the present embodiments have been described with reference to the accompanying drawings, it is to be understood that the invention is not limited to the precise embodiments described above, which are meant to be illustrative and not restrictive, and that various changes may be made therein by those skilled in the art without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (10)
1. A radio frequency circuit is characterized in that it comprises a variable capacitance module,
the variable capacitor module comprises a radio frequency signal input end and a radio frequency signal output end, the variable capacitor module comprises a first variable capacitor and a second variable capacitor, a first end of the first variable capacitor and a first end of the second variable capacitor are both in controllable connection with the radio frequency signal input end, and a second end of the first variable capacitor and a second end of the second variable capacitor are both in controllable connection with the radio frequency signal output end;
the first variable capacitor and the second variable capacitor have different capacity intervals, and the radio frequency circuit can selectively switch on the first variable capacitor or the second variable capacitor.
2. The radio frequency circuit of claim 1, further comprising a control module;
the control module is connected with a control interface of the variable capacitor module, and the control module is used for controlling the first variable capacitor or the second variable capacitor to be connected.
3. A radio frequency circuit according to claim 1, wherein a switch is disposed between the radio frequency signal input terminal and the first variable capacitor, between the radio frequency signal input terminal and the second variable capacitor, between the radio frequency signal output terminal and the first variable capacitor, and between the radio frequency signal input terminal and the second variable capacitor.
4. A radio frequency circuit according to claim 3, wherein the radio frequency circuit comprises: a first switch, a second switch, a third switch and a fourth switch; the first end of the first variable capacitor is connected to the radio frequency signal input end through the first switch, the second end of the first variable capacitor is connected to the radio frequency signal output end through the second switch, the first end of the second variable capacitor is connected to the radio frequency signal input end through the third switch, and the second end of the second variable capacitor is connected to the radio frequency signal output end through the fourth switch.
5. A radio frequency circuit according to claim 3, wherein the radio frequency circuit comprises a fifth switch and a sixth switch, the fifth switch and the sixth switch are single-pole double-throw switches,
a first end of the fifth switch is connected with the radio-frequency signal input end, a second end of the fifth switch is connected with a first end of the first variable capacitor, and a third end of the fifth switch is connected with a first end of the second variable capacitor;
the first end of the sixth switch is connected with the second end of the first variable capacitor, the second end of the sixth switch is connected with the second end of the second variable capacitor, and the third end of the sixth switch is connected with the radio-frequency signal output end.
6. A method for controlling capacitance of a radio frequency circuit, applied to the radio frequency circuit of any one of claims 1 to 5, the method comprising:
acquiring a target frequency band of the radio frequency circuit;
determining a target capacitance value of the variable capacitance module corresponding to the target frequency band according to the target frequency band;
determining a required target working state of the variable capacitor module according to the target capacitance value and the capacity interval of each variable capacitor;
under the condition that the variable capacitor module is in a first working state, the radio frequency circuit is switched on through the first variable capacitor; and under the condition that the variable capacitor module is in a second working state, the radio frequency circuit is switched on through the second variable capacitor.
7. The method according to claim 6, wherein the determining a target capacitance value of the variable capacitance module corresponding to the target frequency band according to the target frequency band comprises:
acquiring a preset list, wherein the preset list stores a one-to-one correspondence relationship between signal frequency bands and capacitance values of variable capacitors;
and determining a target capacitance value of the variable capacitance module corresponding to the target frequency band according to the target frequency band and the preset list.
8. The method of claim 6, wherein after obtaining the target frequency band of the radio frequency circuit, the method further comprises:
acquiring a current frequency band of the radio frequency circuit;
under the condition that the current frequency band is the same as the target frequency band, determining a capacitance value corresponding to the current frequency band as a target capacitance value;
and under the condition that the current frequency band is different from a target frequency band, determining a target capacitance value of the variable capacitance module corresponding to the target frequency band according to the target frequency band.
9. The method of claim 6, further comprising, after determining a desired target operating state of the variable capacitance module:
acquiring an initial capacitance value of the first variable capacitor or the second variable capacitor corresponding to the target working state;
and adjusting the first variable capacitor or the second variable capacitor to the target working state according to the initial capacitance value and the target capacitance value.
10. An electronic device comprising the radio frequency circuit of any one of claims 1-5.
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| CN202210201429.1A CN114679197A (en) | 2022-03-02 | 2022-03-02 | Radio frequency circuit, capacitance value control method thereof and electronic equipment |
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