CN112886999B - Radio frequency circuit, electronic equipment and radio frequency control method - Google Patents
Radio frequency circuit, electronic equipment and radio frequency control method Download PDFInfo
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- CN112886999B CN112886999B CN202110097682.2A CN202110097682A CN112886999B CN 112886999 B CN112886999 B CN 112886999B CN 202110097682 A CN202110097682 A CN 202110097682A CN 112886999 B CN112886999 B CN 112886999B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
- H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
- H04B7/0413—MIMO systems
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- 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
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
- H04W52/04—TPC
- H04W52/18—TPC being performed according to specific parameters
- H04W52/24—TPC being performed according to specific parameters using SIR [Signal to Interference Ratio] or other wireless path parameters
- H04W52/246—TPC being performed according to specific parameters using SIR [Signal to Interference Ratio] or other wireless path parameters where the output power of a terminal is based on a path parameter calculated in said terminal
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
- H04W52/04—TPC
- H04W52/18—TPC being performed according to specific parameters
- H04W52/24—TPC being performed according to specific parameters using SIR [Signal to Interference Ratio] or other wireless path parameters
- H04W52/247—TPC being performed according to specific parameters using SIR [Signal to Interference Ratio] or other wireless path parameters where the output power of a terminal is based on a path parameter sent by another terminal
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W56/00—Synchronisation arrangements
Abstract
The application discloses a radio frequency circuit, electronic equipment and a radio frequency control method, and belongs to the technical field of communication. The radio frequency circuit includes: the first radio frequency module and the second radio frequency module are used for transmitting radio frequency signals; the first antenna is used for transmitting the radio frequency signal output by the first radio frequency module; the second antenna is used for transmitting the radio frequency signal output by the second radio frequency module; a first control switch; the radio frequency transceiver is used for generating and outputting radio frequency signals and outputting power control commands based on the transmitting power of the first radio frequency module or the second radio frequency module; the first synchronous controller is used for synchronizing the power control instruction of the radio frequency transceiver to the second radio frequency module and inputting the power control instruction sent by the second synchronous controller to the transmitting channel of the first radio frequency module; the second synchronous controller is used for synchronizing the power control instruction of the radio frequency transceiver to the first radio frequency module and inputting the power control instruction sent by the first synchronous controller to a transmitting channel of the second radio frequency module.
Description
Technical Field
The application belongs to the technical field of communication, and particularly relates to a radio frequency circuit, electronic equipment and a radio frequency control method.
Background
In order to increase the uplink transmission rate and reduce the data transmission delay, so as to meet the requirement of consumers on uplink data transmission, a radio frequency architecture based on a Multiple-Input Multiple-Output (MIMO) technology is developed.
Taking 2 × 2MIMO as an example, an existing 2 × 2MIMO radio frequency architecture is generally designed to implement uplink data transmission by performing time-sharing control on two connected transmission paths by a radio frequency transceiver, that is, a radio frequency signal is sent through one transmission path at a first time period, that is, the transmission frequency of the transmission path is acquired and the transmission path is controlled based on the acquired transmission frequency, so that the transmission frequency of the transmission path reaches an expected transmission power; and then, transmitting a radio frequency signal through another transmission path in a second time interval, and repeatedly executing the steps until the transmission of the uplink data is completed. However, since only one transmission path can be controlled in the same time period, the difference between the transmission power, the phase and the time delay between the two transmission paths becomes large, thereby deteriorating the coherence between the two transmission paths and reducing the transmission rate of the uplink data.
Disclosure of Invention
An object of the embodiments of the present application is to provide a radio frequency circuit, an electronic device, and a radio frequency control method, which can solve the problem of the existing MIMO architecture that the correlation between radio frequency signals transmitted by each transmission channel is deteriorated.
In order to solve the technical problem, the present application is implemented as follows:
in a first aspect, an embodiment of the present application provides a radio frequency circuit, including:
the first radio frequency module and the second radio frequency module transmit radio frequency signals;
the first antenna is used for transmitting the radio frequency signal output by the first radio frequency module;
the second antenna is used for transmitting the radio-frequency signal output by the second radio-frequency module;
a first control switch;
the radio frequency transceiver is respectively connected with the transmitting path of the first radio frequency module and the transmitting path of the second radio frequency module, switchably connected with the power acquisition module of the first radio frequency module and the power acquisition module of the second radio frequency module through the first control switch to generate and output radio frequency signals, and generates and outputs a power control command based on the transmitting power of the first radio frequency module or the transmitting power of the second radio frequency module;
the first synchronous controller is used for synchronizing the power control instruction output by the radio frequency transceiver to the second radio frequency module and inputting the power control instruction sent by the second synchronous controller to a transmitting channel of the first radio frequency module;
and the second synchronous controller is used for synchronizing the power control command output by the radio frequency transceiver to the first radio frequency module and inputting the power control command sent by the first synchronous controller to a transmitting channel of the second radio frequency module.
In a second aspect, an embodiment of the present application provides an electronic device, which includes the radio frequency circuit provided in the first aspect.
In a third aspect, an embodiment of the present application provides a radio frequency control method, which is applied to the electronic device in the first aspect, and the method includes:
controlling the first radio frequency module to send a first radio frequency signal and controlling the second radio frequency module to send a second radio frequency signal;
acquiring the transmitting power of a target radio frequency signal acquired by a power acquisition module of a target radio frequency module, wherein the target radio frequency module is the first radio frequency module or the second radio frequency module, and the target radio frequency signal is a radio frequency signal sent by the target radio frequency module;
sending a power control instruction to the target radio frequency module based on the transmitting power of the target radio frequency signal;
and a synchronous controller which controls the corresponding connection of the target radio frequency module synchronizes the power control instruction to the other one of the first radio frequency module and the second radio frequency module.
In the embodiment of the application, by adding the first synchronization controller and the second synchronization controller, the first synchronization controller synchronizes the power control instruction sent by the radio frequency transceiver to the second radio frequency module, and the second synchronization controller synchronizes the power control instruction sent by the radio frequency transceiver to the first radio frequency module, so that the control of the transmission power of the first radio frequency signal sent by the first transmission and the second radio frequency signal sent by the second transmission module can be synchronously performed, the difference between the transmission power, the phase and the time delay between the radio frequency signals sent by the first transmission path and the second transmission path is further reduced, the coherence between the first transmission path and the second transmission path is improved, and the transmission rate of uplink data is improved.
Drawings
Fig. 1 is a schematic structural diagram of a radio frequency circuit according to an embodiment of the present disclosure;
fig. 2 is a flowchart of a radio frequency control method according to an embodiment of the present application.
Description of reference numerals:
10-radio frequency transceiver,
20-a first RF module,
21-a first transmit path, 211-a first controller, 212-a first power amplifier, 213-a first filter, 22-a first power harvesting module, 23-a second control switch, ANT 1-a first antenna,
30-a second radio frequency module,
31-a second transmission path, 311-a second controller, 312-a second power amplifier, 313-a second filter, 32-a second power acquisition module, 33-a third control switch, ANT 2-a second antenna,
40-first control switch, 50-first synchronous controller, 60-second synchronous controller, 70-modem.
Detailed Description
The technical solutions in the embodiments of the present application will be clearly and completely described 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, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
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 is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the application are capable of operation in sequences other than those illustrated or described herein. 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 electronic device, and the radio frequency control method provided in the embodiments of the present application are described in detail below with reference to the accompanying drawings.
Referring to fig. 1, fig. 1 is a schematic structural diagram of a radio frequency circuit according to an embodiment of the present disclosure, where the radio frequency circuit is applicable to an electronic device. As shown in fig. 1, the rf circuit may include an rf transceiver 10, a first rf module 20, a second rf module 30, a first antenna ANT1, a second antenna ANT2, a first control switch 40, a first synchronization controller 50, and a second synchronization controller 60.
The first rf module 20 may include a transmission path 21 (hereinafter, referred to as a "first transmission path") and a power collection module 22 (hereinafter, referred to as a "first power collection module"). Specifically, the first power collecting module 22 is connected between the first transmitting path 21 and the first antenna ANT1, the first transmitting path 21 may process the radio frequency signal sent by the radio frequency transceiver 10, and the first radio frequency signal processed by the first transmitting path 21 is transmitted through the first antenna ANT1, for example, to a network device such as a base station. The first power collecting module 22 may collect the transmission power of the first radio frequency signal transmitted by the first transmission path 21.
The second rf module 30 may include a transmission path 31 (hereinafter, referred to as "second transmission path") and a power harvesting module 32 (hereinafter, referred to as "second power harvesting module"). Specifically, the second power collecting module 32 is connected between the second transmitting path 31 and the second antenna ANT2, the second transmitting path 31 may process the radio frequency signal sent by the radio frequency transceiver 10, and the second radio frequency signal processed by the second transmitting path 31 is transmitted through the second antenna ANT2, for example, to a network device such as a base station. The second power collecting module 32 may collect the transmission power of the second radio frequency signal transmitted by the second transmission path 31.
The rf transceiver 10 is connected to the first transmitting path 21 and the second transmitting path 31 respectively, and the rf transceiver 10 is further switchably connected to the first power collecting module 22 and the second power collecting module 32 through the first control switch 40.
Specifically, the radio frequency transceiver 10 has a function of generating radio frequency signals, a first radio frequency output terminal of the radio frequency transceiver 10 is connected to the radio frequency input terminal RFIN1 of the first transmission path 21, and a second radio frequency output terminal of the radio frequency transceiver 10 is connected to the radio frequency input terminal RFIN2 of the second transmission path 31. Therefore, the radio frequency transceiver 10 may input the generated radio frequency signals to the first transmission path 21 and the second transmission path 31, respectively, transmit the first radio frequency signal processed by the first transmission path 21 to the network device through the first antenna ANT1, and transmit the second radio frequency signal processed by the second transmission path 31 to the network device through the second antenna ANT 2.
The rf transceiver 10 further has a control function, and the control signal terminal of the rf transceiver 10 is respectively connected to the control terminal (e.g. including VIO, Sdata, and Sclk) of the first transmission path 21 and the control terminal (e.g. including VIO, Sdata, and Sclk) of the second transmission path 31. Thus, the radio frequency transceiver 10 can control the first transmission path 21 and the second transmission path 31 to perform the following operations: opening, closing, resetting, switching working state, adjusting transmitting power and the like.
The rf transceiver 10 further has a power detection function, wherein the power detection terminal FBRX of the rf transceiver 10 is connected to the first terminal of the first control switch 40, the second terminal of the first control switch 40 is connected to the output terminal of the first power collecting module 22, and the third terminal of the first control switch 40 is connected to the output terminal of the second power collecting module 32. Therefore, the rf transceiver 10 may control the first end and the second end of the first control switch 40 to be in a conducting state, so as to obtain the transmission power of the first rf signal acquired by the first power acquisition module 22, and further control the first transmission path 21 based on the transmission power of the first rf signal, for example, output a power control instruction for adjusting the transmission power to the first transmission path 21, so as to adjust the transmission power of the first rf signal, so that the transmission power of the first rf signal reaches a desired transmission power; alternatively, the rf transceiver 10 may control the first terminal and the third terminal of the first control switch 40 to be in a conducting state, so as to obtain the transmitting power of the second rf signal acquired by the second power acquisition module 32, and further control the second transmitting path 31 based on the transmitting power of the second rf signal, for example, output a power control instruction for adjusting the transmitting power to the second transmitting path 31, so as to adjust the transmitting power of the second rf signal.
The first synchronization controller 50 may synchronize the power control command output by the rf transceiver 10 to the second rf module 30, and input the power control command sent by the second synchronization controller 60 to the first transmission path 21. The second synchronization controller 60 may synchronize the power control command output by the radio frequency transceiver 10 to the first radio frequency module 20, and input the power control command sent by the first synchronization controller 50 to the second transmission path 31. Specifically, a first synchronization controller 50 may be connected to the first transmit path 21, and a second synchronization controller 60 may be connected to the second transmit path 31 and the first synchronization controller 50, respectively.
During uplink data transmission, the rf transceiver 10 can respectively output rf signals to the first transmitting path 21 and the second transmitting path 31, and obtain a first rf signal through processing in the first transmitting path 21, and obtain a second rf signal through processing in the second transmitting path 31. The first power collecting module 22 collects the transmitting power of the first radio frequency signal in real time, and the second power collecting module 32 collects the transmitting power of the second radio frequency signal.
The rf transceiver 10 can control the first terminal and the second terminal of the first control switch 40 to be in a conducting state, and at this time, the transmission power of the first rf signal collected by the first power collecting module 22 is input to the rf transceiver 10. If the transmission power of the first rf signal does not reach the expected transmission power, the rf transceiver 10 generates a power control command based on the difference between the two and inputs the power control command to the first transmission path 21 and the first synchronization controller 50, respectively, and the first transmission path 21 adjusts the transmission power of the first rf signal based on the power control command. Meanwhile, the first synchronization controller 50 synchronizes the power control command output by the radio frequency transceiver 10 to the second synchronization controller 60, and the second synchronization controller 60 inputs the power control command to the second transmission path 31, so that the second transmission path 31 adjusts the transmission power of the second radio frequency signal based on the power control command. This achieves the purpose of synchronously performing transmission control on the first transmission path 21 and the second transmission path 31.
Alternatively, the radio frequency transceiver 10 may also control the first terminal and the third terminal of the second control switch 23 to be in a conducting state, and at this time, the transmission power of the second radio frequency signal acquired by the second power acquisition module 32 is input to the radio frequency transceiver 10. If the transmission power of the second rf signal does not reach the expected transmission power, the rf transceiver 10 generates a power control command based on the difference between the two signals and inputs the power control command to the second transmission path 31 and the second synchronization controller 60, the second transmission path 31 adjusts the transmission power of the second rf signal based on the power control command, and meanwhile, the second synchronization controller 60 synchronizes the power control command output by the rf transceiver 10 to the first synchronization controller 50, and the first synchronization controller 50 inputs the power control command to the first transmission path 21, so that the first transmission path 21 adjusts the transmission power of the first rf signal based on the power control command. This achieves the purpose of synchronously performing transmission control on the first transmission path 21 and the second transmission path 31.
Through the radio frequency circuit provided by the embodiment of the application, by adding the first synchronization controller 50 and the second synchronization controller 60, the first synchronization controller 50 synchronizes the power control instruction sent by the radio frequency transceiver 10 to the second radio frequency module 30, and the second synchronization controller 60 synchronizes the power control instruction sent by the radio frequency transceiver 10 to the first radio frequency module 20, it is possible to implement the control of the transmission power of the first radio frequency signal sent by the first transmission and the second radio frequency signal sent by the second transmission module synchronously, and further reduce the difference between the transmission power, the phase and the time delay between the radio frequency signals sent by the first transmission path 21 and the second transmission path 31, improve the coherence between the first transmission path 21 and the second transmission path 31, and improve the transmission rate of uplink data.
Optionally, in the embodiment of the present application, the first rf module 20 and the second rf module 30 may be the same or different. For example, one of the first rf module 20 and the second rf module 30 may be a single band rf module, and the other one may be an rf module integrated by a multi-band rf module.
Alternatively, in the embodiment of the present application, the first control switch 40 may be a Single-Pole/Multi-through (SPxT) switch. Specifically, the second terminal and the third terminal of the first control switch 40 are different contacts on the same side of the first control switch 40. Thus, by controlling the contact switching of the first control switch 40, the first power collection module 22 and the second power collection module 32 can be switchably connected with the radio frequency transceiver 10. By adopting the SPxT as the first control switch 40, the implementation is simple, the hardware cost is low, and the SPxT switch can be respectively connected to each frequency band rf module to realize the transmit power sampling of each frequency band rf module under the condition that the first rf module 20 and/or the second rf module 30 are integrated by the multiband rf modules.
Optionally, in this embodiment, the first transmission path 21 may include a first controller 211, a first power amplifier 212, and a first filter 213. The first power amplifier 212 and the first filter 213 are sequentially connected in series between the first rf output terminal of the rf transceiver 10 and the first power collecting module 22, the input terminal of the first controller 211 is connected to the control signal output terminal of the rf transceiver 10, and the first output terminal of the first controller 211 is connected to the first control terminal of the first power amplifier 212.
In practical applications, the pass band frequency range of the first filter 213 may be set based on the target frequency band required to be transmitted by the first transmission path 21. The first controller 211 and the control signal output terminal of the radio frequency transceiver 10 may be connected through a radio frequency front end control interface specification (MIPI RFFE) bus.
An input terminal of the first synchronization controller 50 is connected to a first output terminal of the first controller 211, a first synchronization signal terminal of the first synchronization controller 50 is connected to a second control terminal of the first power amplifier 212, and a second synchronization signal terminal Sync of the first synchronization controller 50 is connected to a second synchronization signal terminal Sync of the second synchronization controller 60.
Specifically, the first power amplifier 212 receives the rf signal from the rf transceiver 10 and amplifies the rf signal. The radio frequency signal processed by the first power amplifier 212 is output to the first filter 213 for filtering, and the radio frequency signal of the target frequency band screened by the first filter 213 is output to the first power acquisition module 22, on one hand, the radio frequency signal is output to the first antenna ANT1 through the first power acquisition module 22, and is transmitted through the first antenna ANT1, thereby completing the transmission process of the radio frequency signal; on the other hand, the first power collection module 22 collects the transmission power and inputs the collected transmission power data to the radio frequency transceiver 10 through the first control switch 40.
After receiving the transmission power collected by the first power collecting module 22, the rf transceiver 10 may generate a corresponding power control command based on a difference between the transmission power and the desired transmission power, and input the power control command to the first controller 211, where the first controller 211 performs corresponding control on the first power amplifier 212 based on the power control command, for example, including but not limited to gain control, bias circuit control, and operation mode control, to adjust the transmission power of the first rf signal so that the transmission power of the first rf signal reaches the desired transmission power.
Meanwhile, the first controller 211 further inputs the power control command to the first synchronization controller 50, the first synchronization controller 50 synchronizes the power control command to the second synchronization controller 60, and the second synchronization controller 60 inputs the power control command sent by the first synchronization controller 50 to the second transmission path 31 to control the second transmission path 31 to adjust the transmission power of the second radio frequency signal based on the power control command, so that the transmission power of the second radio frequency signal reaches the desired transmission power. Thereby, the purpose of synchronously performing transmission control on the first transmission path 21 and the second transmission path 31 is achieved.
It can be understood that, by using the first power amplifier 212 and the first filter 213 in the transmission path to transmit the radio frequency signal sent by the radio frequency transceiver 10, using the first controller 211 to receive the power control command sent by the radio frequency transceiver 10 and control the first power amplifier 212 based on the power control command, and connecting the output end of the first controller 211 to the first synchronization controller 50 to synchronize the power control command into the second transmission path 31, the transmission power control of the two transmission paths is achieved synchronously, which is simple and low in hardware cost, and also saves the device space.
In the embodiment of the present application, the first synchronization controller 50 may be disposed at any position, for example, preferably, the first synchronization controller 50 may be disposed in the first transmitting module, so as to further save the equipment space. In a more preferred embodiment, the first synchronous controller 50 and the first controller 211 may be integrated into a single controller, so that the hardware cost may be further reduced and the space of the device may be saved. Of course, the first synchronous controller 50 and the first controller 211 may be two controllers separately provided.
Optionally, in this embodiment of the application, the first rf module 20 may further include a second control switch 23, the power acquisition module of the first rf module 20 is switchably connected to the output end of the first filter 213 through the second control switch 23, and the second output end of the first controller 211 is connected to the control end of the second control switch 23.
Therefore, the first controller 211 can also control the second control switch 23 to be turned on or off under the control of the radio frequency transceiver 10, so as to implement the turning on or off of the first transmission path 21, thereby implementing the flexible selection of the transmission path.
Further, the second control switch 23 may be an SPxT switch. Specifically, a first end of the second control switch 23 is connected to the first power collecting module 22, and a second end of the second control switch 23 is connected to the first filter 213. In this case, a receiving path (hereinafter referred to as "first receiving path", not shown) may be further added to the first rf module 20, an input end of the first receiving path may be connected to the third end of the second control switch 23, and an output end of the first receiving path may be connected to a first rf input end (not shown) of the rf transceiver 10. Wherein the second terminal and the third terminal are two contacts located on the same side of the second control switch 23.
Thus, the first controller 211 can realize the switching of the first transmission path 21 and the first reception path by controlling the contact switching of the second control switch 23. For example, the first controller 211 may control the first end and the second end of the second control switch 23 to be in a conducting state, so as to transmit the radio frequency signal sent by the radio frequency transceiver 10 through the first transmitting path 21, thereby implementing transmission of uplink data; the first controller 211 may further control the first terminal and the third terminal of the second control switch 23 to be in a conducting state, so as to input the signal received by the first antenna ANT1 to the radio frequency transceiver 10 after processing the signal through the first receiving path, thereby implementing transmission of downlink data.
Optionally, in the embodiment of the present application, the first power collecting module 22 may include a first coupler. The input terminal of the first coupler is connected to the output terminal of the first transmission path 21, the through output terminal of the first coupler is connected to the first antenna ANT1, and the coupling output terminal of the first coupler is connected to the power detection terminal FBRX of the radio frequency transceiver 10 through the first control switch 40. More specifically, the coupling output terminal of the first coupler is connected to the second terminal of the first control switch 40, and the first terminal of the first control switch 40 is connected to the power detection terminal FBRX of the radio frequency transceiver 10.
Therefore, by adopting the first coupler in the first power collecting module 22, the radio frequency signal processed by the first transmitting path 21 can be divided into two paths by the first coupler, one path is input to the first antenna ANT1 and is transmitted by the first antenna ANT1, the other path is input to the radio frequency transceiver 10 by the first control switch 40, and the transmitting power of the first radio frequency signal is detected by the radio frequency transceiver 10, so that the first transmitting path 21 is controlled based on the transmitting power of the first radio frequency signal.
Optionally, in this embodiment, the second transmission path 31 may include a second controller 311, a second power amplifier 312, and a second filter 313. The second power amplifier 312 and the second filter 313 are sequentially connected in series between the second rf output terminal of the rf transceiver 10 and the second power collecting module 32, an input terminal of the second controller 311 is connected to the control signal output terminal of the rf transceiver 10, and a second output terminal of the second controller 311 is connected to the first control terminal of the second power amplifier 312.
In practical applications, the pass band frequency range of the second filter 313 may be set based on the target frequency band of the transmission required by the second transmission path 31. The second controller 311 and the control signal output terminal of the radio frequency transceiver 10 may be connected through a MIPI RFFE bus.
An input terminal of the second synchronization controller 60 is connected to a first output terminal of the second controller 311, a first synchronization signal terminal of the second synchronization controller 60 is connected to a second control terminal of the second power amplifier 312, and a second synchronization signal terminal Sync of the second synchronization controller 60 is connected to a second synchronization signal terminal Sync of the first synchronization controller 50.
Specifically, the second power amplifier 312 receives the rf signal from the rf transceiver 10 and amplifies the rf signal. The radio frequency signal processed by the second power amplifier 312 is output to the second filter 313 for filtering, and the radio frequency signal of the target frequency band screened out by the second filter 313 is output to the second power acquisition module 32, on one hand, the radio frequency signal is output to the second antenna ANT2 through the second power acquisition module 32, and is transmitted through the second antenna ANT2, thereby completing the transmission process of the radio frequency signal; on the other hand, the second power collection module 32 collects the transmission power and inputs the collected transmission power to the radio frequency transceiver 10 through the first control switch 40.
After receiving the transmission power collected by the second power collecting module 32, the rf transceiver 10 may generate a corresponding power control command based on a difference between the transmission power and the expected transmission power, and input the power control command to the second controller 311, and the second controller 311 performs corresponding control, such as but not limited to gain control, bias circuit control, and operation mode control, on the second power amplifier 312 based on the power control command to adjust the transmission power of the second rf signal so that the transmission power of the second rf signal reaches the expected transmission power.
Meanwhile, the second controller 311 also inputs the power control command to the second synchronization controller 60, the second synchronization controller 60 synchronizes the power control command to the second synchronization controller 60, and the second synchronization controller 60 inputs the power control command sent by the second synchronization controller 60 to the first transmission path 21 to control the first transmission path 21 to adjust the transmission power of the first radio frequency signal based on the power control command, so that the transmission power of the first radio frequency signal reaches the desired transmission power. Thereby, the purpose of synchronously performing transmission control on the first transmission path 21 and the second transmission path 31 is achieved.
It can be understood that, by using the second power amplifier 312 and the second filter 313 in the transmission path to transmit the radio frequency signal sent by the radio frequency transceiver 10, using the second controller 311 to receive the power control command sent by the radio frequency transceiver 10 and control the second power amplifier 312 based on the power control command, and connecting the output end of the second controller 311 to the second synchronization controller 60 to synchronize the power control command into the first transmission path 21, the transmission power control of the two transmission paths is synchronized, which is simple and low in hardware cost, and also saves the device space.
In the embodiment of the present application, the second synchronization controller 60 may be disposed at any position, for example, preferably, the second synchronization controller 60 may be disposed in the second transmitting module, so as to further save the equipment space. In a more preferable scheme, the second synchronous controller 60 and the second controller 311 can be integrated into one controller, so that the hardware cost can be further reduced, and the equipment space can be saved. Of course, the second synchronization controller 60 and the second controller 311 may be two controllers provided independently.
Optionally, in this embodiment of the application, the second rf module 30 may further include a third control switch 33, the power acquisition module of the second rf module 30 is switchably connected to the output terminal of the second filter 313 through the third control switch 33, and the second output terminal of the second controller 311 is connected to the control terminal of the third control switch 33.
Therefore, the second controller 311 can also control the third control switch 33 to be turned on or off under the control of the radio frequency transceiver 10, so as to implement the turning on or off of the second transmission path 31, thereby implementing the flexible selection of the transmission path.
Further, the third control switch 33 may be an SPxT switch. Specifically, a first end of the third control switch 33 is connected to the second power collecting module 32, and a second end of the third control switch 33 is connected to the second filter 313. In this case, a receiving path (hereinafter referred to as "second receiving path", not shown) may be further added to the second rf module 30, an input end of the second receiving path may be connected to the third end of the third control switch 33, and an output end of the second receiving path may be connected to a second rf input end (not shown) of the rf transceiver 10. Wherein the second terminal and the third terminal are two contacts located on the same side of the third control switch 33.
Thus, the second controller 311 can realize the switching of the second transmission path 31 and the second reception path by controlling the contact switching of the third control switch 33. For example, the second controller 311 may control the first terminal and the second terminal of the third control switch 33 to be in a conducting state, so as to transmit the radio frequency signal sent by the radio frequency transceiver 10 through the second transmission path 31, thereby implementing transmission of uplink data; the second controller 311 may further control the first terminal and the third terminal of the third control switch 33 to be in a conducting state, so as to process the signal received by the second antenna ANT2 and input the processed signal to the radio frequency transceiver 10 through the second receiving path, thereby implementing transmission of downlink data.
Optionally, in this embodiment of the present application, the second power collecting module 32 may include a second coupler. Wherein, the input terminal of the second coupler is connected to the output terminal of the second transmission path 31, the through output terminal of the second coupler is connected to the second antenna ANT2, and the coupling output terminal of the second coupler is connected to the power detection terminal FBRX of the radio frequency transceiver 10 through the first control switch 40. More specifically, the coupling output terminal of the second coupler is connected to the third terminal of the first control switch 40, and the first terminal of the first control switch 40 is connected to the power detection terminal FBRX of the rf transceiver 10. The second terminal and the third terminal of the third control switch 33 are two different contacts of the third switch located on the same side.
Therefore, by adopting the second coupler in the second power collecting module 32, the radio frequency signal processed by the second transmitting path 31 can be divided into two paths by the second coupler, one path is input to the second antenna ANT2 and transmitted out through the second antenna ANT2, the other path is input to the radio frequency transceiver 10 through the first control switch 40, and the transmitting power of the second radio frequency signal is detected by the radio frequency transceiver 10, so that the second transmitting path 31 is controlled based on the transmitting power of the second radio frequency signal.
Optionally, the rf circuit in the embodiment of the present application may further include a modem 70, wherein the modem 70 is connected to the input terminal of the rf transceiver 10. The modem 70, which is a baseband portion of the radio frequency circuitry, may modulate and demodulate received signals.
Specifically, in the uplink data transmission process, the modem 70 may perform digital-to-analog conversion on the original data and output the converted data to the radio frequency transceiver 10; during the transmission of the downlink data, the modem 70 may perform analog-to-digital conversion on the signal output by the rf transceiver 10 and send the converted signal to an AP (Application Processor) for processing.
An embodiment of the present application further provides an electronic device, which includes the radio frequency circuit according to any of the above embodiments of the present application.
Referring to fig. 2, an embodiment of the present application further provides a radio frequency control method, which can be applied to the electronic device described in the present application. As shown in fig. 2, the method includes:
step 201, controlling the first rf module 20 to transmit the first rf signal and controlling the second rf module 30 to transmit the second rf signal.
The electronic equipment is started and searches for a network, and a proper cell is selected as a resident cell. And when the resident cell is in an idle state, the electronic equipment sends an uplink service request to the network equipment, and the network equipment responds to the uplink server request and schedules the electronic equipment so as to enable the electronic equipment to work in an uplink UL-MIMO state. Next, the network device issues a Transmit Power Control (TPC) command to the electronic device through a Physical Downlink Control Channel (PDCCH). After the electronic device receives the TPC command, the radio frequency transceiver 10 therein controls the first radio frequency module 20 to transmit a corresponding first radio frequency signal and controls the second radio frequency module 30 to transmit a corresponding second radio frequency signal, respectively, based on the expected transmission power indicated by the TPC command.
The target rf module is the first rf module 20 or the second rf module 30, and the target rf signal is a rf signal transmitted by the target rf module. That is, in the case that the target rf module is the first rf module 20, the target rf signal is the first rf signal; in the case that the target rf module is the second rf module 30, the target rf signal is the second rf signal.
Specifically, the radio frequency transceiver 10 may control the first end and the second end of the first control switch 40 to be in a conducting state, so as to obtain the transmitting power of the first radio frequency signal acquired by the power acquisition module of the first radio frequency module 20; alternatively, the radio frequency transceiver 10 may control the first terminal and the third terminal of the first control switch 40 to be in a conducting state, so as to obtain the transmitting power of the second radio frequency signal acquired by the power acquisition module of the second radio frequency module 30.
Specifically, after receiving the transmission power of the target radio frequency signal, the radio frequency transceiver 10 compares the transmission power of the target radio frequency signal with the expected transmission power indicated by the TPC command, and if the transmission power of the target radio frequency signal is not consistent with the expected transmission power indicated by the TPC command, generates a corresponding power control command based on a difference between the transmission power of the target radio frequency signal and sends the power control command to the target radio frequency module to instruct the target radio frequency module to adjust the transmission power of the target radio frequency signal, so that the transmission power of the target radio frequency signal reaches the expected transmission power.
Step 204, the synchronization controller correspondingly connected to the control target rf module synchronizes the power control command to the other one of the first rf module 20 and the second rf module 30.
Specifically, if the target rf module is the first rf module 20, the first synchronization controller 50 is controlled to synchronize the power control command to the second rf module 30, so that the second rf module 30 adjusts the transmission power of the second rf signal based on the power control command, so that the transmission power of the second rf signal also reaches the desired transmission power.
If the target rf module is the second rf module 30, the second synchronization controller 60 is controlled to synchronize the power control command to the first rf module 20, so that the first rf module 20 adjusts the transmission power of the first rf signal based on the power control command, so that the transmission power of the first rf signal also reaches the desired transmission power.
Further, in the process of transmitting the uplink data, when the electronic device receives a new TPC command issued by the network device, the electronic device repeatedly executes the above steps 201 to 204 based on the new TPC command until no new TPC command is received, thereby completing the transmission of the uplink data.
It should be noted that, the radio frequency control method provided in the foregoing embodiment of the present application may refer to specific working processes of each component in the radio frequency circuit in the embodiment shown in fig. 1, and details are not described here.
Secondly, in the radio frequency control method provided by the embodiment of the present application, the execution main body may be a processor of the electronic device.
The radio frequency control method provided by the embodiment of the application can realize the control of the transmission power of the first radio frequency signal sent by the first transmission module and the second radio frequency signal sent by the second transmission module synchronously, so as to reduce the difference between the transmission power, the phase and the time delay between the radio frequency signals sent by the first transmission channel 21 and the second transmission channel 31, improve the coherence between the first transmission channel 21 and the second transmission channel 31, and improve the transmission rate of uplink data.
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 above description of the embodiments, those skilled in the art will clearly understand that the method of the above embodiments can be implemented by software plus a necessary general hardware platform, and certainly can also be implemented by hardware, but in many cases, the former is a better implementation manner. Based on such understanding, the technical solutions of the present application may be embodied in the form of a 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, an air conditioner, 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 (12)
1. A radio frequency circuit, comprising:
the first radio frequency module and the second radio frequency module are used for transmitting radio frequency signals;
the first antenna is used for transmitting the radio frequency signal output by the first radio frequency module;
the second antenna is used for transmitting the radio-frequency signal output by the second radio-frequency module;
a first control switch;
the radio frequency transceiver is respectively connected with the transmitting path of the first radio frequency module and the transmitting path of the second radio frequency module, switchably connected with the power acquisition module of the first radio frequency module and the power acquisition module of the second radio frequency module through the first control switch to generate and output radio frequency signals, and generates and outputs a power control command based on the transmitting power of the first radio frequency module or the transmitting power of the second radio frequency module;
the first synchronous controller is used for synchronizing the power control instruction output by the radio frequency transceiver to the second radio frequency module and inputting the power control instruction sent by the second synchronous controller to a transmitting channel of the first radio frequency module;
and the second synchronous controller is used for synchronizing the power control command output by the radio frequency transceiver to the first radio frequency module and inputting the power control command sent by the first synchronous controller to a transmitting channel of the second radio frequency module.
2. The radio frequency circuit of claim 1, wherein a transmit path of the first radio frequency module comprises a first controller, a first power amplifier, and a first filter;
the first power amplifier and the first filter are sequentially connected in series between a first radio-frequency output end of the radio-frequency transceiver and a power acquisition module of the first radio-frequency module, an input end of the first controller is connected with a control signal output end of the radio-frequency transceiver, and a first output end of the first controller is connected with a first control end of the first power amplifier;
the input end of the first synchronous controller is connected with the first output end of the first controller, the first synchronous signal end of the first synchronous controller is connected with the second control end of the first power amplifier, and the second synchronous signal end of the first synchronous controller is connected with the second synchronous signal end of the second synchronous controller.
3. The RF circuit of claim 2, wherein the first synchronization controller is integrated with the first controller in a single controller.
4. The rf circuit of claim 2, wherein the first rf module further comprises a second control switch, the power collecting module of the first rf module is switchably connected to the output of the first filter through the second control switch, and the second output of the first controller is connected to the control terminal of the second control switch.
5. The RF circuit of claim 1, wherein the power collection module of the first RF module comprises a first coupler, wherein an input terminal of the first coupler is connected to an output terminal of the transmission path of the first RF module, a through output terminal of the first coupler is connected to the first antenna, and a coupling output terminal of the first coupler is connected to the power detection terminal of the RF transceiver through the first control switch.
6. The RF circuit of claim 1, wherein the transmit module of the second RF module comprises a second controller, a second power amplifier, and a second filter;
the second power amplifier and the second filter are sequentially connected in series between a second radio-frequency output end of the radio-frequency transceiver and a power acquisition module of the second radio-frequency module, an input end of the second controller is connected with a control signal output end of the radio-frequency transceiver, and a second output end of the second controller is connected with a first control end of the second power amplifier;
the input end of the second synchronous controller is connected with the first output end of the second controller, the first synchronous signal end of the second synchronous controller is connected with the second control end of the second power amplifier, and the second synchronous signal end of the second synchronous controller is connected with the second synchronous signal end of the first synchronous controller.
7. The RF circuit of claim 6, wherein the second synchronization controller is integrated with the second controller in one controller.
8. The RF circuit of claim 6, wherein the first RF module further comprises a third control switch, the power acquisition module of the second RF module is switchably connected to the output of the second filter through the third control switch, and the second output of the second controller is connected to the control terminal of the third control switch.
9. The RF circuit of claim 1, wherein the power collection module of the second RF module comprises a second coupler, wherein an input terminal of the second coupler is connected to an output terminal of the transmission path of the second RF module, a through output terminal of the second coupler is connected to the second antenna, and a coupling output terminal of the second coupler is connected to the power detection terminal of the RF transceiver through the first control switch.
10. The rf circuit according to any of claims 1-9, further comprising a modem connected to the input of the rf transceiver.
11. An electronic device comprising the radio frequency circuit of any one of claims 1 to 10.
12. A radio frequency control method applied to the electronic device of claim 11, the method comprising:
controlling the first radio frequency module to send a first radio frequency signal and controlling the second radio frequency module to send a second radio frequency signal;
acquiring the transmitting power of a target radio frequency signal acquired by a power acquisition module of a target radio frequency module, wherein the target radio frequency module is the first radio frequency module or the second radio frequency module, and the target radio frequency signal is a radio frequency signal sent by the target radio frequency module;
sending a power control instruction to the target radio frequency module based on the transmitting power of the target radio frequency signal;
and a synchronous controller which controls the corresponding connection of the target radio frequency module synchronizes the power control instruction to the other one of the first radio frequency module and the second radio frequency module.
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| CN113489555B (en) * | 2021-08-10 | 2023-04-18 | 上海闻泰信息技术有限公司 | Channel quality detection terminal and electronic equipment |
| CN114301492A (en) * | 2022-01-04 | 2022-04-08 | Oppo广东移动通信有限公司 | Multi-path selection device, control method, radio frequency system and wireless communication equipment |
| CN115065375A (en) * | 2022-05-20 | 2022-09-16 | Oppo广东移动通信有限公司 | Radio frequency power amplifying circuit, radio frequency system and wireless communication equipment |
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