CN111756396A

CN111756396A - Radio frequency circuit, electronic device, and control method

Info

Publication number: CN111756396A
Application number: CN202010680758.XA
Authority: CN
Inventors: 韦仁杰; 易伟
Original assignee: Vivo Mobile Communication Co Ltd
Current assignee: Vivo Mobile Communication Co Ltd
Priority date: 2020-07-15
Filing date: 2020-07-15
Publication date: 2020-10-09

Abstract

The application discloses a radio frequency circuit, an electronic device and a control method. The radio frequency circuit includes: the antenna comprises a radio frequency transceiver, a first radio frequency module, a second radio frequency module, a first switch module, a second switch module and a plurality of antennas; the radio frequency transceiver comprises a first transmitting port and a power detection module; the first radio frequency module comprises a first power amplifier and a first directional coupler which are electrically connected with each other, the second radio frequency module comprises a second power amplifier and a second directional coupler which are electrically connected with each other, the first end of the first directional coupler and the first end of the second directional coupler are respectively connected to corresponding antennas through a second switch module, and the second end of the first directional coupler and the second end of the second directional coupler are both connected with the power detection module; the first input end of the first switch module is connected with the first transmitting port, and the two output ends of the first switch module are respectively connected with the first power amplifier and the second power amplifier. The embodiment of the application improves the efficiency of the power amplifier.

Description

Radio frequency circuit, electronic device, and control method

Technical Field

The application belongs to the technical field of communication, and particularly relates to a radio frequency circuit, electronic equipment and a control method.

Background

Current users are demanding higher demands on the development of communication technologies, such as higher communication rates, lower network latency, greater connection capacity and traffic density. Currently, radio frequency circuits are commonly used to perform frequency band transmissions. 5G (5 generation mobile networks, fifth generation mobile communication technology) supports two ways in the development process: 1T4R (1 st 4 st receive) and 2T4R (2 st 4 st receive). The 5G NR (New Radio, New air interface) frequency band supports SRS (sounding reference Signal) antenna alternate transmission and antenna switching transmission technologies of 1T4R and 2T 4R.

However, in an actual use process, in the prior art, when 2T4R of one frequency band (e.g., N78) is performed, the Power amplifiers corresponding to the transmission signals of TX1 and TX2 are fixed, and when TX1 is used as the fixed transmission of 1T4R, only the TX1 path can be taken, that is, only 2T4R is available, and the PA (Power Amplifier) corresponding to TX2 will operate. When the 2T4R is backed to 1T4R, if the PA of the TX1 channel is operated at maximum power for a long time under certain conditions, the efficiency is reduced, and the PA may be damaged and the reliability problem may occur.

Disclosure of Invention

The embodiment of the application aims to provide a radio frequency circuit, electronic equipment and a control method, and the problem that the reliability of a power amplifier is poor due to the fact that the power amplifier is damaged after long-time operation can be solved.

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 antenna comprises a radio frequency transceiver, a first radio frequency module, a second radio frequency module, a first switch module, a second switch module and a plurality of antennas;

the radio frequency transceiver comprises a first transmitting port and a power detection module;

the first radio frequency module comprises a first power amplifier and a first directional coupler which are electrically connected with each other, the second radio frequency module comprises a second power amplifier and a second directional coupler which are electrically connected with each other, the first end of the first directional coupler and the first end of the second directional coupler are respectively connected to corresponding antennas through the second switch module, and the second end of the first directional coupler and the second end of the second directional coupler are both connected with the power detection module;

a first input end of the first switch module is connected with the first transmitting port, and two output ends of the first switch module are respectively connected with the first power amplifier and the second power amplifier;

the first transmission port is communicated with the first power amplifier under the condition that the first switch module is in a first state; under the condition that the first switch module is in a second state, the first transmitting port is communicated with the second power amplifier.

In a second aspect, an embodiment of the present application provides an electronic device, including the radio frequency circuit described in the first aspect.

In a third aspect, an embodiment of the present application provides a control method, which is applied to the radio frequency circuit in the first aspect, and the method includes:

under the condition that a first switch module in the radio frequency circuit is in a first state, detecting a power detection value of a first power amplifier in the radio frequency circuit through a power detection module in the radio frequency circuit, wherein under the condition that the first switch module is in the first state, a first transmitting port in the radio frequency circuit is communicated with the first power amplifier;

and under the condition that the power detection value meets a preset condition, controlling the first switch module to be in a second state so as to control the first transmitting port to be communicated with a second power amplifier in the radio frequency circuit.

In a fourth aspect, an embodiment of the present application provides a control apparatus, including:

the first detection module is used for detecting a power detection value of a first power amplifier in the radio frequency circuit through the power detection module in the radio frequency circuit under the condition that a first switch module in the radio frequency circuit is in a first state, wherein a first transmitting port in the radio frequency circuit is communicated with the first power amplifier under the condition that the first switch module is in the first state;

and the control module is used for controlling the first switch module to be in a second state under the condition that the power detection value meets a preset condition so as to control the first transmitting port to be communicated with a second power amplifier in the radio frequency circuit.

In a fifth aspect, the present application provides a readable storage medium, on which a program or instructions are stored, which when executed by a processor implement the steps of the method according to the third aspect.

In a sixth aspect, embodiments of the present application provide a chip, where the chip includes a processor and a communication interface, where the communication interface is coupled to the processor, and the processor is configured to execute a program or instructions to implement the method according to the third aspect.

In the embodiment of the application, the first switch module is arranged, so that the first switch module is switched among a plurality of states, the first transmission port can select the first power amplifier or the second power amplifier, the problem that the efficiency of the power amplifier is reduced due to the fact that the first transmission port can only work for a long time through a certain fixed power amplifier is solved, the first power amplifier or the second power amplifier is freely selected through the first switch module, the service lives of the first power amplifier and the second power amplifier are prolonged, the reliability of the first power amplifier and the reliability of the second power amplifier are further enhanced, and meanwhile, the flexibility of power amplifier selection is further enhanced.

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 second schematic structural diagram of a radio frequency circuit according to an embodiment of the present application;

fig. 3 is a schematic structural diagram of a first rf module in an rf circuit according to an embodiment of the present disclosure;

FIG. 4 is a flowchart of a control method provided in an embodiment of the present application;

fig. 5 is a second flowchart of a control method according to an embodiment of the present application;

FIG. 6 is a schematic structural diagram of a control device according to an embodiment of the present disclosure;

fig. 7 is a schematic structural diagram of an electronic device according to an embodiment of the present disclosure;

fig. 8 is a second schematic structural diagram of an electronic device according to an embodiment of the present application.

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 control method provided in the embodiments of the present application are described in detail below with reference to the accompanying drawings through specific embodiments and application scenarios thereof.

Referring to fig. 1 and fig. 2, fig. 1 and fig. 2 are schematic structural diagrams of a radio frequency circuit provided in an embodiment of the present application, and as shown in fig. 1 and fig. 2, the radio frequency circuit includes: the radio frequency transceiver 10, the first radio frequency module 20, the second radio frequency module 30, the first switch module 40, the second switch module 50 and the plurality of antennas 60;

the radio frequency transceiver 10 includes a first transmission port 11 and a power detection module;

the first radio frequency module 20 includes a first power amplifier 21 and a first directional coupler 22 electrically connected to each other, the second radio frequency module 30 includes a second power amplifier 31 and a second directional coupler 32 electrically connected to each other, a first end of the first directional coupler 22 and a first end of the second directional coupler 32 are respectively connected to the corresponding antenna 60 through the second switch module 50, and a second end of the first directional coupler 22 and a second end of the second directional coupler 32 are both connected to the power detection module;

a first input end of the first switch module 40 is connected to the first transmitting port 11, and two output ends of the first switch module 40 are respectively connected to the first power amplifier 21 and the second power amplifier 31;

wherein, when the first switch module 40 is in the first state, the first transmission port 11 is communicated with the first power amplifier 21; when the first switch module 40 is in the second state, the first transmission port 11 communicates with the second power amplifier 31.

The working principle of the embodiment of the application can be referred to as the following expression:

since the first switch module 40 is provided in the embodiment of the present application, by switching the first switch module 40 between different states, it is thus possible to realize that the first transmission port 11 communicates with the first power amplifier 21 or the second power amplifier 31, namely, the purpose that the first transmission port 11 selects the first power amplifier 21 or the second power amplifier 31 can be realized through the first switch module 40, which solves the problem that the first transmission port 11 can only be communicated with a fixed power amplifier, which leads the power amplifier to work for a long time, thereby causing a problem that the efficiency of the power amplifier is lowered, and thus, the life span of the first power amplifier 21 and the second power amplifier 31 can be extended, thereby enhancing the reliability of the first power amplifier 21 and the second power amplifier 31 while also enhancing the flexibility of power amplifier selection.

In addition, the second switch module 50 may also be switched between a plurality of states, so that the first power amplifier 21 or the second power amplifier 31 may communicate with different antennas 60 through the second switch module 50, that is, the purpose of freely selecting the antenna 60 by the first power amplifier 21 or the second power amplifier 31 may be achieved through the second switch module 50. Meanwhile, a test socket 90 may be further disposed between the second switch module 50 and the antenna 60 to facilitate detection of the signal receiving strength of the antenna 60.

In addition, since the first radio frequency module 20 includes the first directional coupler 22, the second radio frequency module 30 includes the second directional coupler 32, and both the first directional coupler 22 and the second directional coupler 32 are connected to the power detection module, in this way, the power detection module can detect the first power amplifier 21 connected to the first directional coupler 22, and a power detection value of the second power amplifier 31 connected to the second directional coupler 32, in the case where the power detection value of one of the first power amplifier 21 and the second power amplifier 31 satisfies the preset condition, this indicates that there is a risk of failure of either the first power amplifier 21 or the second power amplifier 31, the first switch module 40 may be controlled to switch to control the first transmission port 11 to be switched to the power amplifier without a failure risk with the other one of the first power amplifier 21 and the second power amplifier 31. Thus, the realization of normal power amplification of the radio frequency circuit is ensured.

The preset condition may refer to corresponding expressions in subsequent embodiments, and details are not described herein.

The type of the resource transmitted by the first transmitting port 11 is not limited herein, for example: the resource transmitted by the first transmission port 11 may be a resource corresponding to an N78 frequency band or an N79 frequency band.

Of course, in order to enhance the radiation performance of the rf circuit, as an alternative embodiment, referring to fig. 1 and fig. 2, the rf transceiver 10 further includes a second transmitting port 12, and the first switch module 40 further includes a second input terminal, and the second input terminal is connected to the second transmitting port 12;

wherein, when the first switch module 40 is in the first state, the second transmitting port 12 is communicated with the second power amplifier 31; with the first switch module 40 in the second state, the second transmitting port 12 communicates with the first power amplifier 21.

The resources transmitted by the first transmitting port 11 and the second transmitting port 12 may be the same, and of course, may also be different, for example: the resource transmitted by the first transmission port 11 may be a first resource of the N78 frequency band, and the resource transmitted by the second transmission port 12 may be a second resource of the N78 frequency band.

In the embodiment of the present application, since the radio frequency transceiver 10 includes the first transmitting port 11 and the second transmitting port 12, and the first transmitting port 11 and the second transmitting port 12 can be switched between the first power amplifier 21 and the second power amplifier 31, respectively, the radiation efficiency of the radio frequency circuit is enhanced, so that the radiation effect of the radio frequency circuit is better.

In addition, the first input end and the second input end of the first switch module 40 are two different input ends, so that when the first switch module 40 is in the first state, the first transmission port 11 is connected with the output end corresponding to the first power amplifier 21 through the first input end, thereby achieving the purpose of conducting the first transmission port 11 and the first power amplifier 21; similarly, the second transmitting port 12 is connected to the corresponding output terminal of the second power amplifier 31 through the second input terminal, so as to achieve the purpose of connecting the second transmitting port 12 and the second power amplifier 31. Similarly, when the first switch module 40 is in the second state, reference may be made to the corresponding description of the first state, and details are not repeated herein.

As an alternative embodiment, referring to fig. 1, the second control terminal of the first directional coupler 22 is electrically connected to the power detection module through the second control terminal of the second directional coupler 32. In this way, the first directional coupler 22 and the second directional coupler 32 can be electrically connected to the power detection module through one interface, so that the number and volume of the interfaces on the power detection module are reduced, and the use cost is reduced.

As another alternative, referring to fig. 2, the second end of the first directional coupler 22 and the second end of the second directional coupler 32 are electrically connected to the power detection module, respectively. In this way, the first directional coupler 22 and the second directional coupler 32 are electrically connected to the power detection module, respectively, and when one of the first directional coupler 22 and the second directional coupler 32 fails, the normal implementation of the function of the other directional coupler is not affected, thereby enhancing the stability of the radio frequency circuit.

Optionally, referring to fig. 1 and fig. 2, the radio frequency circuit further includes a third radio frequency module 70 and a fourth radio frequency module 80, a first end of the third radio frequency module 70 and a first end of the fourth radio frequency module 80 are respectively connected to the radio frequency transceiver 10, a second end of the third radio frequency module 70 and a second end of the fourth radio frequency module 80 are respectively connected to the corresponding antennas 60 through a second switch module 50, the plurality of antennas 60 are in one-to-one correspondence with the first radio frequency module 20, the second radio frequency module 30, the third radio frequency module 70 and the fourth radio frequency module 80, and the first end of the third radio frequency module 70 and the fourth radio frequency module 80 are both radio frequency receiving modules.

The radio frequency circuit includes a first radio frequency module 20, a second radio frequency module 30, a third radio frequency module 70 and a fourth radio frequency module 80, the first radio frequency module 20 and the second radio frequency module 30 can simultaneously implement receiving and transmitting functions of signals, and the third radio frequency module 70 and the fourth radio frequency module 80 are radio frequency receiving modules, which can only implement receiving of signals, so that the radio frequency circuit can implement transmitting of two-way signals and receiving of four-way signals, that is, the radio frequency circuit can be in a 2T4R mode, when the radio frequency circuit only needs to transmit one-way signals, but receives four-way signals, the radio frequency circuit can be in a 1T4R mode at this time.

Referring to fig. 3, a specific structure of the first radio frequency module 20 may be further provided, a control switch 24 and a filter 23 may be further disposed between the first power amplifier 21 and the first directional coupler 22, specifically, the first power amplifier 21 is electrically connected to a first control end of the control switch 24, a second control end of the control switch 24 is electrically connected to the radio frequency transceiver 10 through a low noise amplifier 25, and a third control end of the control switch 24 is electrically connected to the filter 23.

In the embodiment of the present application, since the rf circuit further includes the third rf module 70 and the fourth rf module 80, the number of the rf circuit signal receiving modules is increased, so that the signal receiving effect of the rf circuit is better.

Optionally, the first switch module 40 is a DPDT switch, and the second switch module 50 is a 4P4T switch.

Among them, the DPDT switch may be referred to as a double pole double throw switch, and the 4P4T switch may be referred to as a four pole four throw switch.

Like this, adopt DPDT switch and 4P4T switch can reduce use cost, compare with the mode that all adopts 4P4T switch simultaneously, can avoid the waste of control end again, in addition, because the reliability of DPDT switch and 4P4T switch is better to can strengthen the reliable degree of first switch module 40 and second switch module 50's control effect.

Optionally, an embodiment of the present application further provides an electronic device, including the radio frequency circuit, and since the electronic device provided in the embodiment of the present application includes the radio frequency circuit, the electronic device has the same beneficial technical effects as the embodiment described above, and a specific structure of the radio frequency circuit may refer to corresponding expressions in the embodiment described above, which are not described herein again in detail.

Referring to fig. 4, an embodiment of the present application further provides a control method, which is applied to the radio frequency circuit in the foregoing embodiment, where the method includes the following steps:

step 401, detecting a power detection value of a first power amplifier 21 in the radio frequency circuit through a power detection module in the radio frequency circuit when a first switch module 40 in the radio frequency circuit is in a first state, wherein a first transmission port 11 in the radio frequency circuit is communicated with the first power amplifier 21 when the first switch module 40 is in the first state.

The radio frequency circuit in this embodiment may be applied to an electronic device, and the transmission power of the radio frequency transceiver 10 in the radio frequency circuit, the power detection value detected by the power detection module, and the power level of the radio frequency transceiver 10 may have a one-to-one preset relationship, and the preset relationship may be stored in the electronic device. Thus, when the power detection module detects that the power detection value is the first value, the transmission power of the rf transceiver 10 and the power level of the rf transceiver 10 can be clearly known according to the preset relationship. The preset relationship may be specifically shown in table 1, where rgi in table 1 represents the power level of the radio frequency transceiver 10, the power detection value is the power detection value detected by the power detection module, the power is the transmission power of the radio frequency transceiver 10, and the channel represents the current transmission channel of the radio frequency circuit.

Channel with a plurality of channels	rgl	Power of	Power detection value
				19575	71	27.3	47253
19575	7C	27.6	45011
				19575	69	27.3	42944
19575	68	26.8	40944
				19575	67	26.2	38316
19575	66	25.4	34307
				19575	65	24.6	30238
19575	64	23.6	26332
				19575	63	22.7	22315
19575	62	21.8	13310
				19575	61	20.7	14216

TABLE 1

For example: if the power detection module detects that the current power detection value is 22315, the transmission power of the rf transceiver 10 is 22.7dbm and the power level of the rf transceiver 10 is 63 according to table 1.

Referring to the corresponding expressions in the above embodiments, the type of the resource transmitted by the first transmitting port 11 is not specifically limited herein.

Optionally, before the detecting the power detection value of the first power amplifier 21 in the radio frequency circuit by the power detection module in the radio frequency circuit under the condition that the first switch module 40 in the radio frequency circuit is in the first state, the method further includes:

receiving a target power value sent by a server;

adjusting the conducted power of at least one of the first power amplifier 21 and the second power amplifier 31 to the target power value.

The target power value may be referred to as a calibration parameter, and when the target power value transmitted by the server is received, the radio frequency circuit may adjust the conduction power of at least one of the first power amplifier 21 and the second power amplifier 31 to the target power value. Then, a first power detection value when the rf transceiver 10 passes through the first power amplifier 21 and a second power detection value when the rf transceiver 10 passes through the second power amplifier 31 are detected, and when a difference between the first power detection value and a target power value (which may be determined as a second preset threshold) is greater than a preset threshold, it indicates that the first power amplifier 21 has a failure risk, or when a difference between the second power detection value and the target power value is greater than the preset threshold, it indicates that the second power amplifier 31 has a failure risk, so that the rf transceiver 10 needs to switch the corresponding power amplifier.

Of course, similarly, it may also be determined whether the power detection value satisfies the preset condition according to whether the difference between the power level (rgi) corresponding to the first power detection value and the target power value (rgi) is greater than the power level difference corresponding to the second preset threshold.

Step 402, controlling the first switch module 40 to be in a second state when the power detection value meets a preset condition, so as to control the first transmission port 11 to communicate with the second power amplifier 31 in the radio frequency circuit.

The preset condition indicates that the first power amplifier 21 has a failure risk, and when the power detection value meets the preset condition, it indicates that the first power amplifier 21 has a failure risk, and the first transmission port 11 needs to be communicated with the second power amplifier 31, so that the normal implementation of the transmission function of the radio frequency circuit can be ensured.

In addition, as an optional implementation manner, when the first switch module 40 is in the second state, the second state indicates that the first transmit port 11 and the second power amplifier 31 are turned on, and when the power detection value at this time satisfies the preset condition, the first switch module 40 is controlled to be in the first state, so as to control the first transmit port 11 to be communicated with the first power amplifier 21 in the radio frequency circuit.

In this way, in this embodiment, through steps 401 to 402, when there is a risk of failure of the first power amplifier 21, the first transmission port 11 and the second power amplifier 31 may be turned on, so as to ensure normal implementation of the transmission function of the radio frequency circuit.

Optionally, the preset condition includes: the power detection value is larger than a first preset threshold value, or the difference value between the power detection value and a second preset threshold value is larger than a preset difference value. Therefore, the flexibility of detecting whether the power detection value meets the preset condition is enhanced, and the detection is more convenient and flexible.

The first preset threshold and the second preset threshold may be the same or different. The first preset threshold and the second preset threshold may refer to a rated transmission power of the radio frequency circuit, see table 2, and the first preset threshold and the second preset threshold may refer to powers in table 2, and the power detection value is an actual power value detected by the power detection module. For example: when the rated power level (i.e., rgi in table 2) of the rf transceiver 10 in the rf circuit is 55, and the rf transceiver 10 radiates through the first power amplifier 21, but the efficiency of the first power amplifier 21 is reduced due to the long-term operation of the first power amplifier 21, the actual power transmitted by the rf transceiver 10 may be 40756 (i.e., a power detection value), the corresponding power level is 58, and the power detection value is greater than the first preset threshold (i.e., 38356 corresponding to the power level); or the difference between the power detection value and the second preset threshold is greater than the preset difference, which indicates that the first power amplifier 21 has a failure risk, the first transmit port 11 needs to be switched to the second power amplifier 31.

In addition, it should be noted that the judgment of whether the power detection value is greater than the first preset threshold value may also be implemented by judging whether the power level corresponding to the power detection value is greater than the first preset power level; or detecting whether the difference between the power level corresponding to the power detection value and the second preset power level is greater than the preset difference, thereby detecting whether the difference between the power detection value and the second preset threshold is greater than the preset difference.

TABLE 2

Optionally, the method further comprises:

detecting a signal reception strength of each antenna 60 of the plurality of antennas 60 in the radio frequency circuit;

determining a first antenna and a second antenna, wherein the first antenna is the antenna 60 with the strongest signal receiving strength among the plurality of antennas 60, and the signal receiving strength of the second antenna is higher than that of the other antennas 60 except the first antenna among the plurality of antennas 60;

switching a corresponding antenna of one of the first power amplifier 21 and the second power amplifier 31 to the first antenna through a second switch module 50 in the radio frequency circuit; and switching the corresponding antenna of the other one of the first power amplifier 21 and the second power amplifier 31 to the second antenna.

The present embodiment can ensure that the radiation performance and the receiving performance of the first rf module 20 and the second rf module 30 are better.

However, the present embodiment may be performed before step 401 or after step 402.

In the rf circuit, the first rf module 20, the second rf module 30, the third rf module 70, and the fourth rf module 80 may be configured with corresponding antennas 60, for example: the first rf module 20 is correspondingly connected to the antenna 1, the second rf module 30 is correspondingly connected to the antenna 2, the third rf module 70 is correspondingly connected to the antenna 3, and the fourth rf module 80 is correspondingly connected to the antenna 4, wherein the antennas of the above-mentioned rf modules are generally fixed when receiving signals, and meanwhile, the signal receiving strengths of the antennas 1, 2, 3 and 4 are not completely the same, so that a first antenna and a second antenna can be determined among the antennas 1, 2, 3 and 4, the first antenna is the antenna with the strongest signal receiving strength, the second antenna is the antenna with the strongest signal receiving strength except the first antenna (i.e., the antenna with the second strongest signal receiving strength), and then the antenna corresponding to one of the first power amplifier 21 (i.e., the first rf module 20) and the second power amplifier 31 (i.e., the second rf module 30) is switched to the first antenna, the antenna corresponding to the other of the first power amplifier 21 and the second power amplifier 31 is switched to the second antenna, so that the signal radiation performance and the signal reception performance of the first power amplifier 21 and the second power amplifier 31 can be enhanced.

It should be noted that, as an alternative embodiment, the transmitting antenna and the receiving antenna of one of the first radio frequency module 20 and the second radio frequency module 30 are both first antennas, and the transmitting antenna and the receiving antenna of the other of the first radio frequency module 20 and the second radio frequency module 30 are both second antennas.

As another alternative, the transmitting antenna of one of the first rf module 20 and the second rf module 30 is a first antenna; the transmitting antenna of the other of the first rf module 20 and the second rf module 30 is a first antenna, the receiving antenna of the first rf module 20 is an antenna 1, the receiving antenna of the second rf module 30 is an antenna 2, and the receiving antennas of the first rf module 20 and the second rf module 30 are fixed, but the transmitting antenna may be the first antenna and the second antenna. Therefore, the transmitting performance of the radio frequency circuit is ensured to be better, and the power consumption of the radio frequency circuit is reduced.

It should be noted that, when one of the first antenna and the second antenna is the antenna 1 and the other is the antenna 2, the switching may be selected or may not be selected.

In addition, it should be noted that, as an alternative embodiment, in this embodiment, only the first power amplifier 21 may be conductive with the radio frequency transceiver 10, and the second power amplifier 31 may not be conductive with the radio frequency transceiver 10.

Of course, as another alternative embodiment, the radio frequency transceiver 10 further includes a second transmitting port 12; wherein, when the first switch module 40 is in the first state, the second transmitting port 12 is communicated with the second power amplifier 31;

when the power detection value meets a preset condition, controlling the first switch module 40 to be in a second state to control the first transmission port 11 to communicate with the second power amplifier 31 in the radio frequency circuit includes:

and under the condition that the power detection value meets a preset condition, controlling the first switch module 40 to be in a second state so as to control the first transmitting port 11 to be communicated with a second power amplifier 31 in the radio frequency circuit, and simultaneously controlling the second transmitting port 12 to be communicated with the first power amplifier 21.

In this way, since the first power amplifier 21 and the second power amplifier 31 are both conductive to the radio frequency transceiver 10, and the first power amplifier 21 and the second power amplifier 31 can also switch the corresponding transmission ports, flexibility of connection between the first power amplifier 21 and the second power amplifier 31 and the radio frequency transceiver 10 is enhanced.

It should be noted that, as an alternative embodiment, when the first switch module 40 is in the first state and the second state, the radio frequency circuit is in the state of 1T 4R. Thus, the power consumption of the whole radio frequency circuit can be reduced.

See the following expressions: when the rf circuit includes the first rf module 20, the second rf module 30, the third rf module 70 and the fourth rf module 80, the rf circuit can receive signals through the four rf modules, and when only the first power amplifier 21 (i.e., the first rf module 20) is connected to the rf transceiver 10, only the first rf module 20 can transmit signals, and the rf circuit is in the state of 1T 4R.

As another alternative, when the first switch module 40 is in the first state and the second state, the rf circuit is in the 2T4R state. This is the difference between the rf circuit and the above-described 1T4R state in that: the second power amplifier 31 (i.e. the second rf module 30) is also turned on simultaneously with the rf transceiver 10, that is, the first rf module 20 and the second rf module 30 can send signals simultaneously, and the rf circuit is in the 2T4R state. In this way, the flexibility of the radio frequency circuit is enhanced.

This embodiment is illustrated below by way of a specific embodiment, and with reference to fig. 5, the method comprises the following steps:

step 501, when the antenna is in a 2T4R state, detecting RX signal strengths (i.e., antenna reception strengths) of the current four antennas, where antennas 1 to 4 respectively correspond to power amplifiers 1 to 4, and comparing the RX signal strengths of the four antennas;

step 502, Qj is the RX signal strength of the antenna corresponding to the current transmission signal (i.e. TX signal, for example, currently being the first rf module or the second rf module), and Qi is the RX signal strength of other antennas without fixed TX signal (i.e. the signal receiving strength of the antenna corresponding to other rf modules except the first rf module or the second rf module); the difference Δ C between the RX signal strength Qi of the other antenna and the corresponding RX signal strength Qj of the current TX signal is Qi-Qj, which is compared with a threshold C; if yes, go to step 503, otherwise go to step 501.

Step 503, if Δ C is larger than the threshold C, the first power amplifier switches to the Antenna (ANT) with the optimal RX signal strength; the second power amplifier is switched to an antenna with suboptimal RX signal strength;

step 504, judging whether the state is returned to 1T 4R; if yes, go to step 505; if not, return to step 501.

Step 505, when the state is 1T4R and the first power amplifier (PA1) is used for transmitting, detecting the RX signal strengths (i.e. antenna reception strengths) of the current four antennas, wherein antennas 1 to 4 correspond to power amplifiers 1 to 4 respectively, and comparing the RX signal strengths of the four antennas;

step 506, see step 502; if yes, go to step 507, otherwise go to step 505;

step 507, the first power amplifier switches to the antenna with the optimal RX signal strength;

step 508, detecting a power detection value on a path between the radio frequency transceiver and the first power amplifier, corresponding to the calibration list, and calculating rgi an offset value Δ a (Δ a is a difference value between a rated power level value and a detected power level value, and the detected power level value corresponds to the power detection value, which may be specifically referred to as a related expression in table 2);

step 509 comparing Δ a to a threshold D; if Δ A is greater than D, go to step 510; if Δ A is less than or equal to D, then step 511 is performed.

Step 510, TX1 (i.e. the corresponding transmission signal on the first power amplifier) is switched to PA2 (the second power amplifier), and the signal is amplified by PA 2;

step 511, TX1 continues to use PA1, amplifying the signal using PA 1.

Therefore, the power amplifier can also solve the problem that the efficiency of the power amplifier is reduced because the power amplifier can only work for a long time through a fixed power amplifier, the reliability of the first power amplifier and the second power amplifier is enhanced, and the flexibility of selecting the power amplifiers is enhanced.

Referring to fig. 6, an embodiment of the present application further provides a control device, as shown in fig. 6, a control device 600 includes:

a first detecting module 601, configured to detect, by a power detecting module in the radio frequency circuit, a power detection value of a first power amplifier in the radio frequency circuit when a first switch module in the radio frequency circuit is in a first state, where a first transmit port in the radio frequency circuit is communicated with the first power amplifier when the first switch module is in the first state;

the control module 602 is configured to control the first switch module to be in a second state when the power detection value meets a preset condition, so as to control the first transmit port to be communicated with a second power amplifier in the radio frequency circuit.

Optionally, the preset condition includes: the power detection value is larger than a first preset threshold value, or the difference value between the power detection value and a second preset threshold value is larger than a preset difference value.

Optionally, the control device 600 further includes:

a second detection module, configured to detect a signal reception strength of each of a plurality of antennas in the radio frequency circuit;

a determining module, configured to determine a first antenna and a second antenna, where the first antenna is an antenna with the strongest signal reception strength among the multiple antennas, and the signal reception strength of the second antenna is higher than that of other antennas except the first antenna among the multiple antennas;

a switching module, configured to switch a corresponding antenna of one of the first power amplifier and the second power amplifier to the first antenna through a second switch module in the radio frequency circuit; and switching a corresponding antenna of the other of the first power amplifier and the second power amplifier to the second antenna.

Optionally, the radio frequency transceiver further comprises a second transmit port; under the condition that the first switch module is in a first state, the second transmitting port is communicated with the second power amplifier;

the control module 602 is further configured to: and under the condition that the power detection value meets a preset condition, controlling the first switch module to be in a second state so as to control the first transmitting port to be communicated with a second power amplifier in the radio frequency circuit and simultaneously control the second transmitting port to be communicated with the first power amplifier.

Optionally, when the first switch module is in the first state and the second state, the radio frequency circuit is in a state of 1T 4R.

Optionally, the control device 600 further includes:

the receiving module is used for receiving the target power value sent by the server;

an adjusting module, configured to adjust a conduction power of at least one of the first power amplifier and the second power amplifier to the target power value.

It should be noted that, in the control method provided in the embodiment of the present application, the execution main body may be a radio frequency circuit, or a control module in the radio frequency circuit for executing the method of load control. In the embodiment of the present application, a method for controlling a load executed by a radio frequency circuit is taken as an example to describe the method for controlling the load executed by the radio frequency circuit.

The radio frequency circuit in the embodiment of the present application may be a device, or may be a component, an integrated circuit, or a chip in a terminal. The device can be mobile electronic equipment or non-mobile electronic equipment. By way of example, the mobile electronic device may be a mobile phone, a tablet computer, a notebook computer, a palm top computer, a vehicle-mounted electronic device, a wearable device, an ultra-mobile personal computer (UMPC), a netbook or a Personal Digital Assistant (PDA), and the like, and the non-mobile electronic device may be a server, a Network Attached Storage (NAS), a Personal Computer (PC), a Television (TV), a teller machine or a kiosk, and the like, and the embodiments of the present application are not particularly limited.

In the examples of the present applicationRadio frequency circuitMay be a device having an operating system. The operating system may be an Android (Android) operating system, an ios operating system, or other possible operating systems, and embodiments of the present application are not limited specifically.

The radio frequency circuit provided in the embodiment of the present application can implement each process implemented by the radio frequency circuit in the method embodiments of fig. 4 to fig. 5, and is not described here again to avoid repetition. In the embodiment of the application, the problem that the efficiency of the power amplifier is reduced due to the fact that the power amplifier can only work for a long time through a fixed power amplifier can be solved, the first power amplifier or the second power amplifier is freely selected through the first switch module, the service lives of the first power amplifier and the second power amplifier are prolonged, the reliability of the first power amplifier and the reliability of the second power amplifier are further enhanced, and meanwhile the flexibility of selection of the power amplifier is further enhanced.

Optionally, as shown in fig. 7, an electronic device 700 is further provided in this embodiment of the present application, and includes a processor 701, a memory 702, and a program or an instruction stored in the memory 702 and executable on the processor 701, where the program or the instruction is executed by the processor 701 to implement each process of the control method embodiment, and can achieve the same technical effect, and no further description is provided here to avoid repetition.

It should be noted that the electronic device in the embodiment of the present application includes the mobile electronic device and the non-mobile electronic device described above.

Fig. 8 is a schematic diagram of a hardware structure of an electronic device implementing an embodiment of the present application.

The electronic device 800 includes, but is not limited to: a radio frequency unit 801, a network module 802, an audio output unit 803, an input unit 804, a sensor 805, a display unit 806, a user input unit 807, an interface unit 808, a memory 809, and a processor 810.

Those skilled in the art will appreciate that the electronic device 800 may further comprise a power source (e.g., a battery) for supplying power to the various components, and the power source may be logically connected to the processor 810 via a power management system, so as to manage charging, discharging, and power consumption management functions via the power management system. The electronic device structure shown in fig. 8 does not constitute a limitation of the electronic device, and the electronic device may include more or less components than those shown, or combine some components, or arrange different components, and thus, the description is omitted here.

The processor 810 is configured to detect, by a power detection module in the radio frequency circuit, a power detection value of a first power amplifier in the radio frequency circuit when a first switch module in the radio frequency circuit is in a first state, where a first transmit port in the radio frequency circuit is communicated with the first power amplifier when the first switch module is in the first state; and under the condition that the power detection value meets a preset condition, controlling the first switch module to be in a second state so as to control the first transmitting port to be communicated with a second power amplifier in the radio frequency circuit.

Optionally, the processor 810 is further configured to detect a signal reception strength of each antenna of the plurality of antennas in the radio frequency circuit; determining a first antenna and a second antenna, wherein the first antenna is the antenna with the strongest signal receiving strength in the plurality of antennas, and the signal receiving strength of the second antenna is higher than that of the other antennas except the first antenna in the plurality of antennas; switching a corresponding antenna of one of the first power amplifier and the second power amplifier to the first antenna through a second switch module in the radio frequency circuit; and switching a corresponding antenna of the other of the first power amplifier and the second power amplifier to the second antenna.

the controlling, by the processor 810, the first switch module to be in the second state when the power detection value meets a preset condition, so as to control the first transmitting port to communicate with a second power amplifier in the radio frequency circuit, where the controlling includes:

and under the condition that the power detection value meets a preset condition, controlling the first switch module to be in a second state so as to control the first transmitting port to be communicated with a second power amplifier in the radio frequency circuit and simultaneously control the second transmitting port to be communicated with the first power amplifier.

Optionally, the radio frequency unit 801 is configured to receive a target power value sent by the server; a processor 810 configured to adjust a conducted power of at least one of the first power amplifier and the second power amplifier to the target power value.

The embodiment of the present application further provides a readable storage medium, where a program or an instruction is stored on the readable storage medium, and when the program or the instruction is executed by a processor, the program or the instruction implements each process of the control method embodiment, and can achieve the same technical effect, and in order to avoid repetition, details are not repeated here.

The processor is the processor in the electronic device described in the above embodiment. The readable storage medium includes a computer readable storage medium, such as a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk, and so on.

The embodiment of the present application further provides a chip, where the chip includes a processor and a communication interface, the communication interface is coupled to the processor, and the processor is configured to execute a program or an instruction to implement each process of the above control method embodiment, and can achieve the same technical effect, and for avoiding repetition, the details are not repeated here.

It should be understood that the chips mentioned in the embodiments of the present application may also be referred to as system-on-chip, system-on-chip or system-on-chip, etc.

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

1. A radio frequency circuit, comprising: the antenna comprises a radio frequency transceiver, a first radio frequency module, a second radio frequency module, a first switch module, a second switch module and a plurality of antennas;

2. The RF circuit of claim 1, wherein the RF transceiver further comprises a second transmitting port, the first switch module further comprises a second input terminal, and the second input terminal is connected to the second transmitting port;

under the condition that the first switch module is in a first state, the second transmitting port is communicated with the second power amplifier; and under the condition that the first switch module is in a second state, the second transmitting port is communicated with the first power amplifier.

3. The radio frequency circuit according to claim 1, wherein the second control terminal of the first directional coupler is electrically connected to the power detection module through the second control terminal of the second directional coupler.

4. The radio frequency circuit according to claim 1, wherein the second end of the first directional coupler and the second end of the second directional coupler are electrically connected to the power detection module, respectively.

5. The RF circuit according to any one of claims 1-4, further comprising a third RF module and a fourth RF module, wherein a first end of the third RF module and a first end of the fourth RF module are respectively connected to the RF transceiver, a second end of the third RF module and a second end of the fourth RF module are respectively connected to corresponding antennas through a second switch module, the plurality of antennas are in one-to-one correspondence with the first RF module, the second RF module, the third RF module and the fourth RF module, and the first end of the third RF module and the fourth RF module are both RF receiving modules.

6. The RF circuit of claim 5, wherein the first switch module is a DPDT switch and the second switch module is a 4P4T switch.

7. An electronic device comprising the radio frequency circuit of any one of claims 1-6.

8. A control method applied to the radio frequency circuit of claim 1, the method comprising:

9. The method according to claim 8, wherein the preset condition comprises: the power detection value is larger than a first preset threshold value, or the difference value between the power detection value and a second preset threshold value is larger than a preset difference value.

10. The method of claim 8, further comprising:

detecting a signal reception strength of each of a plurality of antennas in the radio frequency circuit;

determining a first antenna and a second antenna, wherein the first antenna is the antenna with the strongest signal receiving strength in the plurality of antennas, and the signal receiving strength of the second antenna is higher than that of the other antennas except the first antenna in the plurality of antennas;

switching a corresponding antenna of one of the first power amplifier and the second power amplifier to the first antenna through a second switch module in the radio frequency circuit; and switching a corresponding antenna of the other of the first power amplifier and the second power amplifier to the second antenna.

11. The method of claim 10, wherein the radio frequency transceiver further comprises a second transmit port; under the condition that the first switch module is in a first state, the second transmitting port is communicated with the second power amplifier;

the controlling the first switch module to be in a second state under the condition that the power detection value meets a preset condition so as to control the first transmitting port to be communicated with a second power amplifier in the radio frequency circuit includes: