CN114679197B - Radio frequency circuit, capacitance control method thereof and electronic equipment - Google Patents
Radio frequency circuit, capacitance control method thereof and electronic equipment Download PDFInfo
- Publication number
- CN114679197B CN114679197B CN202210201429.1A CN202210201429A CN114679197B CN 114679197 B CN114679197 B CN 114679197B CN 202210201429 A CN202210201429 A CN 202210201429A CN 114679197 B CN114679197 B CN 114679197B
- Authority
- CN
- China
- Prior art keywords
- radio frequency
- variable
- capacitance
- target
- variable capacitor
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 238000000034 method Methods 0.000 title claims abstract description 41
- 239000003990 capacitor Substances 0.000 claims abstract description 137
- 238000004891 communication Methods 0.000 abstract description 18
- 230000006870 function Effects 0.000 description 8
- 230000005540 biological transmission Effects 0.000 description 7
- 238000010586 diagram Methods 0.000 description 7
- 238000013461 design Methods 0.000 description 5
- 230000001360 synchronised effect Effects 0.000 description 5
- 230000000694 effects Effects 0.000 description 3
- 238000012545 processing Methods 0.000 description 3
- 230000003287 optical effect Effects 0.000 description 2
- 230000003068 static effect Effects 0.000 description 2
- 238000004590 computer program Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 239000004973 liquid crystal related substance Substances 0.000 description 1
- 238000010295 mobile communication Methods 0.000 description 1
- 238000005192 partition Methods 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
- 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
- H04B1/40—Circuits
- H04B1/401—Circuits for selecting or indicating operating mode
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Transceivers (AREA)
Abstract
The application discloses a radio frequency circuit, a capacitance control method thereof and electronic equipment, and belongs to the technical field of communication. The radio frequency circuit comprises a variable capacitance module, wherein the variable capacitance module comprises a radio frequency signal input end and a radio frequency signal output end, the variable capacitance module comprises a first variable capacitance and a second variable capacitance, the first end of the first variable capacitance and the first end of the second variable capacitance are controllably connected with the radio frequency signal input end, and the second end of the first variable capacitance and the second end of the second variable capacitance are controllably connected with the radio frequency signal output end; wherein the first variable capacitor and the second variable capacitor have different capacity intervals, and the radio frequency circuit selectively turns 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 control method thereof and electronic equipment.
Background
In the design of a mobile phone, different matching circuits are usually required by different frequency points, so that the performance can be guaranteed to be optimal when the different frequency points work, along with the development of communication, the design requirement on the circuit is higher and higher, the time sequence problem of the circuit is guaranteed, and the reliability in the circuit design is always guaranteed.
The variable capacitor design in the circuit design also meets the time sequence 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 so as to ensure the effective transmission of the signal quality. However, the variable capacitance needs to be changed in advance after the RF radio frequency signal starts to change for a period of time to meet all timing requirements, the larger the variable capacitance change range is, the longer the variable capacitance needs to change, namely the longer the overshoot time is needed, the longer the time needed from the current capacitance to the target capacitance is, the time sequence cannot meet the standard specification, and the reliability problem is easy to occur.
Disclosure of Invention
The embodiment aims to provide a radio frequency circuit, a capacitance control method thereof and electronic equipment, which can solve the problem of low reliability of the conventional radio frequency circuit.
In a first aspect, an embodiment of the present application provides a radio frequency circuit, where the radio frequency circuit includes a variable capacitance module, where the variable capacitance module includes a radio frequency signal input end and a radio frequency signal output end, where the variable capacitance module includes a first variable capacitance and a second variable capacitance, where a first end of the first variable capacitance and a first end of the second variable capacitance are controllably connected to the radio frequency signal input end, and a second end of the first variable capacitance and a second end of the second variable capacitance are controllably connected to the radio frequency signal output end; wherein the first variable capacitor and the second variable capacitor have different capacity intervals, and the radio frequency circuit selectively turns 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 of 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 capacitance interval of each variable capacitor; when the variable capacitance module is in a first working state, the radio frequency circuit is connected through the first variable capacitance; and under the condition that the variable capacitance module is in a second working state, the radio frequency circuit is connected through the second variable capacitance.
In a third aspect, an embodiment of the present application provides an electronic device, including the radio frequency circuit of the first aspect.
In a fourth aspect, embodiments of the present application provide a readable storage medium having stored thereon a program or instructions which when executed by a processor perform 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 where the processor is configured to execute a program or instructions to implement a method according to the first aspect.
In the embodiment of the application, the variable capacitance in the radio frequency circuit is changed into the variable capacitance module consisting of the variable capacitance between the capacity regions of the first variable capacitance and the second variable capacitance, so that the capacity value can be distributed in a partitioned mode, the single capacitance change range is small, the capacitance change time is shortened, and the reliability of the circuit is improved.
Drawings
Fig. 1 is a schematic structural diagram of a radio frequency circuit according to the present embodiment;
fig. 2 is another schematic structural diagram of a radio frequency circuit according to the present embodiment;
fig. 3 is a flowchart of a method for controlling capacitance of a radio frequency circuit according to the present embodiment;
fig. 4 is a schematic content diagram of a preset list provided in the present embodiment;
FIG. 5 is a flowchart illustrating a method for controlling capacitance of a radio frequency circuit according to another embodiment;
fig. 6 is a schematic structural diagram of an electronic device according to the present 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 of the embodiments of the present application will be clearly described below with reference to the drawings in the embodiments of the present application, and it is apparent that the described embodiments are some embodiments of the present application, but not all embodiments. All other embodiments, which are obtained by a person skilled in the art based on the embodiments of the present application, fall within the scope of protection of the present application.
The terms first, second and the like in the description and in the claims, are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used may be interchanged, as appropriate, such that embodiments of the present application may be implemented in sequences other than those illustrated or described herein, and that the objects identified by "first," "second," etc. are generally of a type, and are not limited to the number of objects, such as the first object may be one or more. Furthermore, in the description and claims, "and/or" means at least one of the connected objects, and the character "/", generally means that the associated object is an "or" relationship.
The radio frequency circuit, the capacitance control method thereof and the electronic device provided by the embodiment of the application are described in detail through specific embodiments and application scenes thereof with reference to the accompanying drawings.
The variable capacitance is a capacitance of which capacitance value is variable, for example, a capacitance value which can be varied in a range of 1 to 24 PF. The power supply module can be used for outputting voltages with different magnitudes to control the capacitance value of the variable capacitor, so that different capacitance values can be connected 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 μs, the variable capacitor needs to change 95 μs before the rf signal is accessed to meet all timing requirements, but the communication system of the global system for mobile communications and the like is optimized to an optimal level that the variable capacitor starts to change 40 μs in advance of the rf signal and is further 55 μs in difference to meet the timing requirements. I.e. in these 55 mus the capacitance of the variable capacitance access circuit is not equal. 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 control method thereof, and an electronic device, by improving a structure of a variable capacitor module in the radio frequency circuit, and setting a plurality of variable capacitors in a partition manner, a single capacitor variation range is small, so that a time for capacitor variation is reduced, and reliability of the circuit is improved.
Referring to fig. 1, a radio frequency circuit provided in this embodiment includes a variable capacitance module 101, where the variable capacitance module 101 includes a radio frequency signal input end and a radio frequency signal output end, the variable capacitance module includes a first variable capacitance 1002 and a second variable capacitance 1003, a first end of the first variable capacitance 1002 and a first end of the second variable capacitance 1003 are controllably connected to the radio frequency signal input end, and a second end of the first variable capacitance 1002 and a second end of the second variable capacitance 1003 are controllably connected to the radio frequency signal output end.
In this embodiment, the rf signal input terminal is configured to input an rf signal, where the rf signal may be a signal in each communication frequency band, 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 end and the rf signal output end, switching elements are disposed between the rf signal input end and the first variable capacitor 1002, between the rf signal input end and the second variable capacitor 1003, between the rf signal output end and the first variable capacitor 1002, and between the rf signal input end and the second variable capacitor 1003.
In one example, the switching 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 switching elements arranged at the first end and the second end of each variable capacitor may be two independent switches, or may be switches that are synchronous with each other, for example, the switching elements arranged at the first end and the second end of each variable capacitor are two contacts of a relay switch, so that synchronization of one variable capacitor may be achieved, and in one example, the switches arranged at the first end and the second end of each variable capacitor may be two switches that are independent of each other.
In this embodiment, referring to fig. 2, the switching element of the radio frequency circuit may include: a first switch 1004, a second switch 1005, a third switch 1006, and a fourth switch 1007; a first end of the first variable capacitor 1002 is connected to the radio frequency signal input terminal through the first switch 1004, a second end of the first variable capacitor 1002 is connected to the radio frequency signal output terminal through the second switch 1005, a first end of the second variable capacitor 1003 is connected to the radio frequency signal input terminal through the third switch 1006, and a second end of the second variable capacitor 1003 is connected to the radio frequency signal output terminal through the fourth switch 1007. An independent switch piece is arranged between each variable capacitor and the radio frequency signal input end and between each variable capacitor and the radio frequency signal output end, and accurate control of the variable capacitors of the access circuit can be realized.
In this embodiment, the radio frequency circuit may further include a fifth switch and a sixth switch (not shown in the figure), where the fifth switch and the sixth switch are single pole double throw switches, a first end of the fifth switch is a movable 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 a radio frequency signal input end, a second end of the fifth switch is connected to a first end of the first variable capacitor, and a third end of the fifth switch is connected to a first end of the second variable capacitor.
The first end and the second end of the sixth switch are fixed contacts of the single-pole double-throw switch, the third end of the sixth switch is a movable 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 rf signal input end, 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 rf signal output end. The signal control of the circuit can be simplified, the switching device is saved, and the cost is reduced.
In this embodiment, the first variable capacitor and the second variable capacitor have different capacity ranges, and the radio frequency circuit can selectively switch on the first variable capacitor or the second variable capacitor. For example, the capacity interval of the first variable capacitor is 1-14 PF, the capacity interval of the second variable capacitor is 14-24 PF, the capacity requirements of different circuits can be realized by combining the two capacitors, and meanwhile, the capacity change time of the variable capacitor can be shortened.
In an example, the variable capacitance module of the present embodiment may also include a plurality of variable capacitances, where the plurality of variable capacitances may have different capacitance ranges, for example, the variable capacitance module includes 3 variable capacitances connected in parallel, 4 variable capacitances connected in parallel, and so on, so that the capacitance range of the variable capacitance module may be further enlarged, and the variable capacitance module is suitable for circuits with larger capacitance requirements.
In this embodiment, each variable capacitor is configured to switch on the radio frequency circuit at a predetermined frequency band. For example, in the case that the variable capacitance module includes a first variable capacitance and a second variable capacitance, the first variable capacitance is configured to be connected to the radio frequency circuit in the B8 band, that is, two ends of the first variable capacitance form a transmission path with the radio frequency signal input terminal and the radio frequency signal output terminal, and two ends of the second variable capacitance are disconnected from the radio frequency signal input terminal and the radio frequency signal output terminal. The second variable capacitor is configured to be connected to the radio frequency circuit in the B7 band, that is, two ends of the second variable capacitor form a transmission path with the radio frequency signal input end and the radio frequency signal output end, and two ends of the first variable capacitor are disconnected with the radio frequency signal input end and the radio frequency 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, the switch element is a switch diode, and the control signal may be a diode conducting signal, so as to implement that the corresponding first variable capacitor or the second variable capacitor forms a transmission path with the rf signal input end and the rf signal output end, so as to switch on the rf circuit.
According to the embodiment, the variable capacitance in the radio frequency circuit is changed into the variable capacitance module composed of the variable capacitance between the first variable capacitance and the second variable capacitance, so that the sectional distribution of capacitance values can be realized, the single capacitance change range is small, the capacitance change time is shortened, and the reliability of the circuit is improved.
The embodiment also provides a capacitance control method of the radio frequency circuit, referring to fig. 3, the method includes the following steps:
S301, acquiring a target frequency band of the radio frequency circuit.
In one 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 a next time, where the frequency band to be used at the next time is the target frequency band by obtaining frequency band information in the communication data. For example, the current frequency band is B8, and at this time, 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 next frequency band is B7, and 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 the 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 the capacity value corresponding to the current frequency band as the target capacity value; i.e. the variable capacitance of the currently connected radio frequency circuit is kept unchanged. And under the condition that the current frequency band is different from the target frequency band, determining the 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 capacitance is selected again according to the target frequency band, and the variable capacitance may be the current variable capacitance or a variable capacitance different from the current variable capacitance.
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 by one, and the method for determining the target capacitance value corresponding to the target frequency band includes: and acquiring a preset list, and determining the 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 preset list stores one-to-one correspondence between the signal frequency bands and the capacitance values of the variable capacitors.
Referring to fig. 4, fig. 4 is a schematic diagram of 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 20PF.
For example, if the current frequency band of the terminal device is B8, it may be determined that the capacitance value of the variable capacitor to be accessed in the current circuit is 3PF.
S303, determining a required target working state of the variable capacitor module according to the target capacitance value and the capacitance interval of each variable capacitor.
In this embodiment, the variable capacitance module includes a first variable capacitance and a second variable capacitance, and the capacity intervals of the variable capacitances are different, so that according to the target capacitance value and the capacity interval of each variable capacitance, it is determined that the required target working state of the variable capacitance module is different in different working states, and the required target variable capacitance of the variable capacitance module is different.
Under the condition that the variable capacitance module is in a first working state, the radio frequency circuit is connected through a first variable capacitance; and under the condition that the variable capacitance module is in a second working state, the radio frequency circuit is switched on through a second variable capacitance.
For example, the radio frequency circuit shown in fig. 2 includes a first variable capacitor and a second variable capacitor, where the capacity interval of the first variable capacitor is 1-14 PF, the capacity interval of the second variable capacitor is 14-24 PF, and when the frequency band of the terminal device is B8, it can be determined that the target capacity value to be accessed in the current circuit is 3PF. Then the variable capacitance module is in the first operating state and the first variable capacitance is set to the target variable capacitance. Similarly, when the target capacitance value is 20PF, the variable capacitance module is in the second working state, and the second variable capacitance is set as the target variable capacitance, and the target variable capacitance is the first variable capacitance or the second variable capacitance for switching on the radio frequency circuit.
In this embodiment, after determining the required target working state of the variable capacitance module, the control module generates a control signal according to the required target working state of the variable capacitance module to control the switch to switch on the transmission path between the target variable capacitance and the rf signal input and the rf signal output.
Continuing the above example, in the case where the target variable capacitance is the first variable capacitance, the i.e. the variable capacitance module is in the first operating state, a first control signal is generated, and the first control signal is used to control the first switch 1004 and the second switch corresponding to the first variable capacitance to be closed. That is, the first control signal is used to control the first variable capacitor, and the radio frequency signal input end and the radio frequency signal output end form a transmission path.
And when the target variable capacitor is a second variable capacitor, the variable capacitor module is in a second working state, and generates a second control signal, wherein the second control signal is used for controlling a third switch and a fourth switch corresponding 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, the present embodiment further includes, after determining the required target operating state of the variable capacitor module: acquiring an initial capacitance value of a first variable capacitor or a second variable capacitor corresponding to a 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 an intermediate value of the capacitance section of the variable capacitor, for example, in the case where the capacitance section of the first variable capacitor is 1 to 14PF, the initial capacitance value of the first variable capacitor may be 7PF, in the case where the capacitance section 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 changing the capacitance from 7PF to 14PF is significantly smaller than the time for changing the capacitance from 1PF to 14PF, that is, setting the initial capacitance value to the intermediate value of the capacitance section may further shorten the capacitance change time of the variable capacitor. Of course, the initial capacity value may be any value within the capacity interval, and the specific situation may be determined according to the actual requirement.
In one example, if the target capacitance value is 20PF, if the variable capacitance module is in the second operating state, that is, the radio frequency circuit is turned on through the second variable capacitance, and since the capacitance interval of the second variable capacitance is 14-24 PF, the control module may generate the third control signal, where the third control signal is used to control the target variable capacitance 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 20PF.
According to the embodiment, the initial capacitance value of the variable capacitor is obtained, and when the capacitance value of the variable capacitor is adjusted, the variable capacitor 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 mobile phone as an example of a terminal device, 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, the capacitance value of the first variable capacitor is adjusted to 3PF by inquiring a preset list, and the first variable capacitor access circuit is controlled;
s503, detecting whether the mobile phone communication frequency band data changes;
s504, under the condition that the mobile phone communication frequency band data is not changed, the current connection state of the first variable capacitor is kept, and the capacitance value of the first variable capacitor is unchanged;
S505, under the condition that the mobile phone communication frequency band data are changed, under the condition that the frequency band data are changed from B8 to B7, the connection of the first variable capacitor in the radio frequency circuit is disconnected, a preset list is queried to adjust the capacitance value of the second variable capacitor to 20PF, and the second variable capacitor access circuit is controlled.
Referring to fig. 6, the present embodiment further provides an electronic device, including the radio frequency circuit described in the foregoing embodiment, such as the radio frequency circuit in fig. 1 or fig. 2, where 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: radio frequency unit 701, network module 702, audio output unit 703, input unit 704, sensor 705, display unit 706, user input unit 707, interface unit 708, memory 709, and processor 710.
Those skilled in the art will appreciate that the electronic device 700 may also include a power source (e.g., a battery) for powering the various components, which may be logically connected to the processor 710 via a power management system so as to perform functions such as managing charge, discharge, 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 shown, or may combine certain components, or may be arranged in different components, which are not described in detail herein.
The rf unit 701 may be connected to an rf signal input end or an rf signal output end of the rf circuit of this embodiment, and is configured to receive or transmit an rf signal.
A processor 710, configured to acquire 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 capacitance interval of each variable capacitor; when the variable capacitance module is in a first working state, the radio frequency circuit is connected through the first variable capacitance; and under the condition that the variable capacitance module is in a second working state, the radio frequency circuit is connected through the second variable capacitance.
The processor 710 is further configured to obtain a preset list, where the preset list stores a one-to-one correspondence between the signal frequency band and the capacitance value of the variable capacitor; and determining a target capacity value of the variable capacitor module corresponding to the target frequency band according to the target frequency band and the preset list.
The processor 710 is further configured to acquire a current frequency band of the radio frequency circuit after acquiring the target frequency band of the radio frequency circuit; under the condition that the current frequency band is the same as the target frequency band, determining the capacity value corresponding to the current frequency band as the target capacity value; and under the condition that the current frequency band is different from the target frequency band, determining the 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 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.
According to the embodiment, the variable capacitance in the radio frequency circuit is changed into the variable capacitance module composed of the variable capacitance between the first variable capacitance and the second variable capacitance, so that the sectional distribution of capacitance values can be realized, the single capacitance change range is small, the capacitance change time is shortened, and the reliability of the circuit is improved.
It should be appreciated that in embodiments of the present application, the input unit 704 may include a graphics processor (Graphics Processing Unit, GPU) 7041 and a microphone 7042, with the graphics processor 7041 processing image data of still pictures or 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 parts, 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, a joystick, and so forth, which are not described in 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 storing programs or instructions and a second storage area storing data, wherein the first storage area may store an operating system, application programs or instructions (such as a sound playing function, an image playing function, etc.) required for 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 nonvolatile Memory may be a Read-Only Memory (ROM), a Programmable ROM (PROM), an Erasable PROM (EPROM), an Electrically Erasable EPROM (EEPROM), or a flash Memory. The volatile memory may be random access memory (Random Access Memory, RAM), static random access memory (STATIC RAM, SRAM), dynamic random access memory (DYNAMIC RAM, DRAM), synchronous Dynamic Random Access Memory (SDRAM), double data rate Synchronous dynamic random access memory (Double DATA RATE SDRAM, DDRSDRAM), enhanced Synchronous dynamic random access memory (ENHANCED SDRAM, ESDRAM), synchronous link dynamic random access memory (SYNCH LINK DRAM, SLDRAM), and Direct random access memory (DRRAM). Memory 1009 in embodiments of the application includes, but is not limited to, these and any other suitable types of memory.
Processor 710 may include one or more processing units; optionally, processor 710 integrates an application processor that primarily processes operations involving an operating system, user interface, application programs, and the like, and a modem processor that primarily processes wireless communication signals, such as a baseband processor. It will be appreciated that the modem processor described above may not be integrated into the processor 710.
The embodiment of the application also provides a readable storage medium, wherein the readable storage medium stores a program or an instruction, and the program or the instruction realizes each process of the embodiment of the capacitance control method of the radio frequency circuit when being executed by a processor, and can achieve the same technical effect, so that repetition is avoided and redundant description is omitted.
Wherein the processor is a processor in the electronic device described in the above embodiment. The readable storage medium includes computer readable storage medium such as computer readable memory ROM, random access memory RAM, magnetic or optical disk, etc.
The embodiment of the application further provides a chip, the chip comprises a processor and a communication interface, the communication interface is coupled with the processor, the processor is used for running programs or instructions, the processes of the embodiment of the capacitance control method of the radio frequency circuit are realized, the same technical effects can be achieved, and the repetition is avoided, and the description is omitted here.
It should be understood that the chips referred to in the embodiments of the present application may also be referred to as system-on-chip chips, chip systems, or system-on-chip chips, etc.
Embodiments of the present application provide a computer program product stored in a storage medium, where the program product is executed by at least one processor to implement the respective processes of the embodiments of the capacitance control method of the radio frequency circuit, and achieve the same technical effects, and are not repeated herein.
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 one … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element. Furthermore, it should be noted that the scope of the methods and apparatus in the embodiments of the present application is not limited to performing the functions in the order shown or discussed, but may also include performing the functions in a substantially simultaneous manner or in an opposite order depending on the functions involved, e.g., the described methods may be performed in an order different from that described, and various steps may be added, omitted, or combined. Additionally, features described with reference to certain examples may be combined in other examples.
From the above description of the embodiments, it will be clear to those skilled in the art that the above-described embodiment method may be implemented by means of software plus a necessary general hardware platform, but of course may also be implemented by means of hardware, but in many cases the former is a preferred embodiment. Based on such understanding, the technical solution of the present application may be embodied essentially or in a part contributing to the prior art in the form of a computer software product stored in a storage medium (e.g. ROM/RAM, magnetic disk, optical disk) comprising instructions for causing a terminal (which may be a mobile phone, a computer, a server, or a network device, etc.) to perform the method according to the embodiments of the present application.
The embodiments of the present application have been described above with reference to the accompanying drawings, but the present application is not limited to the above-described embodiments, which are merely illustrative and not restrictive, and many forms may be made by those having ordinary skill in the art without departing from the spirit of the present application and the scope of the claims, which are to be protected by the present application.
Claims (10)
1. A radio frequency circuit is characterized by comprising a variable capacitor module,
The variable capacitance module comprises a radio frequency signal input end and a radio frequency signal output end, the variable capacitance module comprises a first variable capacitance and a second variable capacitance, the first end of the first variable capacitance and the first end of the second variable capacitance are controllably connected with the radio frequency signal input end, and the second end of the first variable capacitance and the second end of the second variable capacitance are controllably connected with the radio frequency signal output end;
The first variable capacitor and the second variable capacitor have different capacity intervals, the capacity interval of the first variable capacitor is 1-14 PF, the capacity interval of the second variable capacitor is 14-24 PF, the radio frequency circuit is in a B8 frequency band, the radio frequency circuit is connected with the first variable capacitor, and the radio frequency circuit is in a B7 frequency band, the radio frequency circuit is connected with the second variable capacitor.
2. The radio frequency circuit of claim 1, further comprising a control module;
the control module is connected with the control interface of the variable capacitance module and is used for controlling the first variable capacitance or the second variable capacitance to be connected.
3. The radio frequency circuit of claim 1, wherein switching elements are provided between the radio frequency signal input and the first variable capacitance, between the radio frequency signal input and the second variable capacitance, between the radio frequency signal output and the first variable capacitance, and between the radio frequency signal input and the second variable capacitance.
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 being single pole double throw switches,
The first end of the fifth switch is connected with the radio frequency signal input end, the second end of the fifth switch is connected with the first end of the first variable capacitor, and the third end of the fifth switch is connected with the 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 capacitance control method of a radio frequency circuit, applied to the radio frequency circuit of any one of claims 1 to 5, characterized in that the method comprises:
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 capacitance interval of each variable capacitor;
when the variable capacitance module is in a first working state, the radio frequency circuit is connected through the first variable capacitance; and under the condition that the variable capacitance module is in a second working state, the radio frequency circuit is connected through the second variable capacitance.
7. The method of claim 6, wherein the determining, according to the target frequency band, the target capacitance value of the variable capacitor module corresponding to the target frequency band comprises:
acquiring a preset list, wherein the preset list stores a one-to-one correspondence between signal frequency bands and capacitance values of the variable capacitors;
And determining a target capacity value of the variable capacitor 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 acquiring the target frequency band for the radio frequency circuit, the method further comprises:
Acquiring the 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 the capacity value corresponding to the current frequency band as the target capacity value;
and under the condition that the current frequency band is different from the target frequency band, determining the 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 the desired target operating state of the variable capacitance module:
acquiring an initial capacitance value of a first variable capacitor or a 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.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210201429.1A CN114679197B (en) | 2022-03-02 | 2022-03-02 | Radio frequency circuit, capacitance control method thereof and electronic equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210201429.1A CN114679197B (en) | 2022-03-02 | 2022-03-02 | Radio frequency circuit, capacitance control method thereof and electronic equipment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114679197A CN114679197A (en) | 2022-06-28 |
| CN114679197B true CN114679197B (en) | 2024-07-26 |
Family
ID=82072578
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210201429.1A Active CN114679197B (en) | 2022-03-02 | 2022-03-02 | Radio frequency circuit, capacitance control method thereof and electronic equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114679197B (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108429565A (en) * | 2018-02-28 | 2018-08-21 | 维沃移动通信有限公司 | A kind of radio-frequency match system and mobile terminal |
Family Cites Families (20)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20070188255A1 (en) * | 2006-02-10 | 2007-08-16 | Roland Strandberg | Oscillator gain equalization |
| CN101542895B (en) * | 2007-03-09 | 2011-10-05 | 松下电器产业株式会社 | Local oscillator, reception device and electronic device using the same |
| US8067995B2 (en) * | 2008-03-28 | 2011-11-29 | Panasonic Corporation | Voltage controlled oscillator, and PLL circuit and wireless communication device each using the same |
| US8868011B2 (en) * | 2012-04-30 | 2014-10-21 | Triquint Semiconductor, Inc. | Power amplifier with fast loadline modulation |
| US9697991B2 (en) * | 2014-01-10 | 2017-07-04 | Reno Technologies, Inc. | RF impedance matching network |
| CN105097396A (en) * | 2014-05-19 | 2015-11-25 | 北京北方微电子基地设备工艺研究中心有限责任公司 | Impedance matching device and semiconductor processing equipment |
| CN105097397B (en) * | 2014-05-22 | 2018-05-08 | 北京北方华创微电子装备有限公司 | Impedance-matching device and semiconductor processing equipment |
| CN105227154B (en) * | 2014-06-04 | 2018-12-11 | 北京北方华创微电子装备有限公司 | A kind of impedance-matching device |
| CN107634732B (en) * | 2017-11-06 | 2023-10-20 | 长鑫存储技术有限公司 | Time amplifier and semiconductor memory |
| US11196401B2 (en) * | 2018-08-14 | 2021-12-07 | Newport Fab, Llc | Radio frequency (RF) module using a tunable RF filter with non-volatile RF switches |
| CN111162814B (en) * | 2018-11-07 | 2021-01-19 | 比亚迪股份有限公司 | Impedance adjuster, radio frequency circuit and electronic equipment |
| CN109889278A (en) * | 2019-02-20 | 2019-06-14 | 维沃移动通信有限公司 | Mobile terminal and the method for improving speech quality |
| CN111756119A (en) * | 2019-03-27 | 2020-10-09 | 北京小米移动软件有限公司 | Method and device for improving wireless charging efficiency and electronic equipment |
| CN111293986B (en) * | 2020-04-28 | 2020-11-10 | 恒玄科技(上海)股份有限公司 | Radio frequency modulation circuit |
| CN111628794A (en) * | 2020-05-15 | 2020-09-04 | Oppo广东移动通信有限公司 | Impedance matching circuit and electronic device |
| CN212677132U (en) * | 2020-08-25 | 2021-03-09 | 南京沁恒微电子股份有限公司 | Variable capacitor array and continuous time linear equalizer with variable capacitor array |
| CN213990607U (en) * | 2020-12-31 | 2021-08-17 | 锐石创芯（深圳）科技有限公司 | Tunable capacitance element and low-noise amplifier circuit |
| CN112671357B (en) * | 2020-12-31 | 2021-09-17 | 锐石创芯（深圳）科技有限公司 | Low-noise amplifying circuit |
| CN112968716B (en) * | 2021-02-03 | 2022-12-27 | 维沃移动通信有限公司 | Decoupling circuit, radio frequency front-end module, electronic equipment and isolation degree control method |
| CN215818097U (en) * | 2021-08-17 | 2022-02-11 | 深圳飞骧科技股份有限公司 | Radio frequency power amplifying circuit, transmitting module, communication equipment and communication system |
-
2022
- 2022-03-02 CN CN202210201429.1A patent/CN114679197B/en active Active
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108429565A (en) * | 2018-02-28 | 2018-08-21 | 维沃移动通信有限公司 | A kind of radio-frequency match system and mobile terminal |
Also Published As
| Publication number | Publication date |
|---|---|
| CN114679197A (en) | 2022-06-28 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN108491061B (en) | Processing method and device of radio frequency antenna, storage medium and electronic equipment | |
| CN112997134B (en) | Application icon display method and device, storage medium and electronic equipment | |
| CN107040660A (en) | Control method, device and the mobile terminal of mobile terminal playing volume | |
| US10419920B2 (en) | Network registration method for mobile terminal, storage medium, and mobile terminal | |
| EP3584710B1 (en) | Method and apparatus for controlling display of mobile terminal, and storage medium | |
| CN107678823A (en) | Control method, device and the storage medium and mobile terminal of mobile terminal application | |
| CN111198640B (en) | Interactive interface display method and device | |
| CN105045516A (en) | Method and terminal for switching working mode | |
| US11853098B2 (en) | Detection circuit, touch control panel, and electronic apparatus | |
| CN114584175A (en) | Interference control method and related device | |
| CN111918109A (en) | Television control method, television, remote controller, television system and storage medium | |
| CN116193419A (en) | Communication method, device and equipment | |
| CN114679197B (en) | Radio frequency circuit, capacitance control method thereof and electronic equipment | |
| CN112714494B (en) | Control method of mobile terminal, storage medium and mobile terminal | |
| CN110489013B (en) | Touch detection method, touch detection device and display panel | |
| CN113567751A (en) | Electronic device | |
| CN111130591B (en) | Antenna tuning method, antenna tuning device and terminal equipment | |
| CN115134461B (en) | Electronic apparatus and control method thereof | |
| CN117254684A (en) | Power management module, electronic equipment, and power-on time control method and device | |
| CN110609646A (en) | Signal processing method and device and electronic equipment | |
| CN114500733B (en) | Capacitance sound control method, device, equipment and medium | |
| CN114679198B (en) | Antenna power adjustment method and device, electronic equipment and readable storage medium | |
| CN114553254B (en) | Signal processing circuit, method and device and electronic equipment | |
| CN117856933A (en) | Error correction method, error correction device, electronic device and readable storage medium | |
| EP4152609A1 (en) | Working state adjustment method and apparatus, terminal and storage medium |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |