CN114696867B - Radio frequency circuit, control method, communication device and terminal - Google Patents
Radio frequency circuit, control method, communication device and terminal Download PDFInfo
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- CN114696867B CN114696867B CN202011591954.6A CN202011591954A CN114696867B CN 114696867 B CN114696867 B CN 114696867B CN 202011591954 A CN202011591954 A CN 202011591954A CN 114696867 B CN114696867 B CN 114696867B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
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- 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
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Abstract
The application discloses a radio frequency circuit, a control method, a communication device and a terminal, wherein the radio frequency circuit comprises: the first power amplifier is respectively connected with the first power supply module and the second power supply module through the switch module; the second power amplifier is connected with the second power supply module; the first power amplifier is used for supporting a first communication connection and a second communication connection of a first communication frequency band, and the second power amplifier is used for supporting a second communication connection of a second communication frequency band; the switch module is in a first opening and closing state, and the first power module is communicated with a communication path of the first power amplifier; the second power module is in a second open-close state and is communicated with the communication path of the first power amplifier. Like this, control switch module is in different open and shut states, makes first power amplifier be connected to the power module that matches when being used for different communication connection, through multiplexing current power module, need not to increase extra power module, has practiced thrift power module's configuration, has controlled manufacturing cost.
Description
Technical Field
The present application relates to communication technologies, and in particular, to a radio frequency circuit, a control method, a communication device, and a terminal.
Background
The radio frequency power amplifier is an important component of the radio frequency front end, and the electronic terminal can obtain higher radio frequency output power through the radio frequency power amplifier. In order to ensure better working efficiency of the power supply under higher radio frequency output power, the power consumption of the radio frequency power amplifier can be reduced by adjusting the voltage of the power amplifier in real time to adapt to the power change of the radio frequency amplifier. The most commonly used two voltage management technologies in the industry are an average power tracking (Average Power Tracking, APT) technology and an envelope tracking (Envelope Tracking, ET) technology, which can track the power variation of a radio frequency power amplifier, and adjust the voltage of the power amplifier in real time, so as to improve the working efficiency.
In the terminal having the ENDC function, the terminal can communicate with both the LTE base station and the 5G NR base station in a connected state, and at present, a plurality of frequency bands such as Low Band (LB)/intermediate Band (MB)/High Band (HB) exist in LTE and a plurality of frequency bands such as LB/MB/HB/Ultra High Band (UHB) exist in 5G in the global range. The PA in each frequency band requires a connection APTIC or ETIC to supply power, resulting in an increase in the requirements of APTIC and ETIC, and thus an increase in production costs.
Disclosure of Invention
In order to solve the above technical problems, an embodiment of the application is expected to provide a radio frequency circuit, a control method, a communication device and a terminal.
The technical scheme of the application is realized as follows:
In a first aspect, there is provided a radio frequency circuit comprising: the power supply comprises a first power supply module, a second power supply module, a switch module, a first power amplifier and a second power amplifier; wherein,
The first power amplifier is respectively connected with the first power supply module and the second power supply module through the switch module;
the second power amplifier is connected with the second power supply module;
the first power amplifier is used for supporting a first communication connection and a second communication connection of a first communication frequency band, and the second power amplifier is used for supporting a second communication connection of a second communication frequency band;
When the switch module is in a first opening and closing state, the first power module is communicated with the communication path of the first power amplifier to provide power for the first communication connection supported by the first power amplifier;
When the switch module is in a second opening and closing state, the second power module is conducted with the communication path of the first power amplifier to provide power for second communication connection supported by the first power amplifier.
In a second aspect, there is provided a radio frequency circuit control method, the radio frequency circuit including any one of the radio frequency circuits described in the first aspect, the method comprising:
detecting a current communication state;
the control switch module is in a first opening and closing state, so that the communication path between the first power module and the first power amplifier is conducted;
The control switch module is in a second opening and closing state, so that the communication path between the second power module and the first power amplifier is conducted.
In a third aspect, there is provided a communication device comprising the radio frequency circuit of any of the first aspects.
In a fourth aspect, a terminal is provided, the terminal comprising the communication device of the third aspect.
The embodiment of the application provides a radio frequency circuit, a control method, a communication device and a terminal, wherein the radio frequency circuit comprises: the power supply comprises a first power supply module, a second power supply module, a switch module, a first power amplifier and a second power amplifier; the first power amplifier is respectively connected with the first power supply module and the second power supply module through the switch module; the second power amplifier is connected with the second power supply module; the first power amplifier is used for supporting a first communication connection and a second communication connection of a first communication frequency band, and the second power amplifier is used for supporting a second communication connection of a second communication frequency band; when the switch module is in a first opening and closing state, the first power module is communicated with the communication path of the first power amplifier to provide power for the first communication connection supported by the first power amplifier; when the switch module is in a second opening and closing state, the second power module is conducted with the communication path of the first power amplifier to provide power for second communication connection supported by the first power amplifier. Like this, through increasing the switch module, control switch module is in the different states of opening and shutting, can make first power amplifier be connected to the power module that matches when being used for different communication connection, and need not to increase extra power module at radio frequency circuit, but multiplexing ready-made power module, practiced thrift power module's configuration, controlled manufacturing cost.
Drawings
FIG. 1 is a schematic diagram of a first principle structure of a radio frequency circuit according to an embodiment of the present application;
FIG. 2 is a schematic view of the structure of a double-connection frame;
fig. 3 is a schematic diagram of a power supply principle of a conventional radio frequency circuit;
FIG. 4 is a schematic diagram of a second principle of the RF circuit according to the embodiment of the present application;
FIG. 5 is a schematic diagram of a third principle structure of the RF circuit according to the embodiment of the present application;
FIG. 6 is a schematic diagram of a fourth principle of the RF circuit according to the embodiment of the present application;
FIG. 7 is a schematic diagram of a fifth principle structure of the RF circuit according to the embodiment of the present application;
FIG. 8 is a schematic diagram of a sixth principle of the RF circuit according to the embodiment of the present application;
FIG. 9 is a schematic diagram of a seventh principle of the RF circuit according to the embodiment of the present application;
FIG. 10 is a schematic diagram of an eighth principle of the RF circuit according to the embodiment of the present application;
FIG. 11 is a schematic diagram of a ninth principle of the RF circuit according to the embodiment of the present application;
fig. 12 is a flowchart of a control method of a radio frequency circuit according to an embodiment of the application.
Detailed Description
For a more complete understanding of the nature and the technical content of the embodiments of the present application, reference should be made to the following detailed description of embodiments of the application, taken in conjunction with the accompanying drawings, which are meant to be illustrative only and not limiting of the embodiments of the application.
The fifth generation mobile communication (the fifth generation of cellular mobile communications, abbreviated as 5G) New air interface (NR) defines two types of networks, namely independent networking (Standalone, SA) network and Non-independent networking (Non-Standalone, NSA) network. These two types of 5G networks, together with long term evolution (Long Term Evolution, LTE) networks, coexist and associate with the deployment of networks for long periods of time.
In the non-independent networking, the terminal has an ENDC function, namely an terrestrial radio access (Evolved-UMTS Terrestrial Radio Access, EUTRA) function and an NR dual connectivity (EUTRA-NR Dual Connectivity, ENDC) function, and the UMTS is called an Evolved universal mobile telecommunications system (Universal Mobile Telecommunications System), and the ENDC function terminal can communicate with both the LTE base station and the 5G NR base station in a connected state.
The following describes the technical scheme of the present application and how the technical scheme of the present application solves the above technical problems in detail by examples and with reference to the accompanying drawings. The following embodiments may be combined with each other, and the same or similar concepts or processes may not be described in detail in some embodiments.
Fig. 1 is a schematic structural diagram of a first principle of a radio frequency circuit in an embodiment of the present application, as shown in fig. 1, the radio frequency circuit may specifically include: a first power supply module 111, a second power supply module 112, a switch module 12, a first power amplifier 131 and a second power amplifier 132; wherein,
The first power amplifier 131 is connected to the first power module 111 and the second power module 112 through the switch module 12 at the same time;
the second power amplifier 132 is connected to the second power module 112;
the first power amplifier 131 is used for a first communication connection and a second communication connection of a first communication frequency band, and the second power amplifier 132 is used for a second communication connection of a second communication frequency band;
when the switch module 12 is in the first open/close state, the communication path between the first power module 111 and the first power amplifier 131 is controlled to be conducted;
When the switch module 12 is in the second open-close state, the communication path between the second power module 112 and the first power amplifier 131 is controlled to be conducted.
It should be noted that the radio frequency circuit is applied to a terminal, which is capable of establishing different communication connections with different communication networks, i.e. the terminal is capable of establishing a first communication connection and a second communication connection. The present application is not limited to a specific type of terminal, and in some embodiments, the terminal may be any terminal supporting the dual connectivity mode, for example, a smart phone, a personal computer, a notebook computer, a tablet computer, a portable wearable device, and the like.
Fig. 2 is a schematic structural diagram of a dual connection architecture, and as shown in fig. 2, the dual connection mode is EN-DC mode or next generation EN-DC (next generation EN-DC, ngan-DC) mode, and the terminal 21 may establish an air interface connection with the LTE base station 22 (also referred to as a master node), so as to implement communications with the LTE base station 22; the terminal 21 may also establish an air interface connection with the NR base station 23 (also referred to as a secondary node) to enable communication with the NR base station 23; the terminal 21 may also establish an air interface connection with both the LTE base station 22 and the NR base station 23, thereby enabling communication with both the LTE base station 22 and the NR base station 23. In the dual connectivity mode, the terminal 21 establishes two connections simultaneously with the LTE base station 22 and the NR base station 23, wherein the LTE base station 22 is mainly responsible for transmitting signaling and the NR base station 23 is responsible for transmitting data.
ENDC is a 4G and 5G double connection, a plurality of frequency bands such as LB/MB/HB exist in LTE in the global scope at present, and a plurality of frequency bands such as LB/MB/HB/UHB exist in 5G, so that a plurality of ENDC schemes can appear in any combination of the two, for example: lb+lb, lb+mb, lb+hb, mb+hb, lb+uhb, mb+uhb, hb+uhb, and the like.
With the increase of functional modules of mobile phones and the miniaturization of mobile phones, the power consumption of mobile phones is higher and higher, and meanwhile, the stacking space reserved for batteries is also more and more tensioned, so that the reduction of power consumption is more and more important. For a radio frequency circuit, a Power Amplifier (PA) has larger Power consumption, in order to achieve both cost and Power consumption, a common scheme is that LTE uses an APT Power supply mode, NR uses an ET Power supply mode, and if the PA has both an APT operation mode and an ET operation mode, the PA uses an ET IC to supply Power (and can support both APT and ET operation modes) during system design
If EN-DC supporting any frequency band combination is needed, the power supply of each PA needs to support an ET working mode, and as shown in figure 3, LB PA, MHB PA and UHB PA are respectively connected with ETIC.
In the embodiment of the application, the first power supply module is provided with an average power tracking APT mode, the second power supply module is provided with an envelope tracking ET mode, the first communication connection is a long term evolution LTE connection, and the second communication connection is a new air interface NR connection.
It should be noted that only two power supply modules are required to be set to supply power to a plurality of power amplifiers in the radio frequency circuit, and especially, for a first power amplifier for two kinds of communication connection, a control switch is added to control the first power amplifier to be connected to a matched power supply module when different communication connection is realized, that is, the first power amplifier uses the first power supply module to supply power when realizing the first communication connection, and the first power amplifier uses the second power supply module to supply power when realizing the second communication connection.
The switch module is used for controlling the connection state of the connection path between the first power module and the first power amplifier and the connection state of the connection path between the second power module and the first power amplifier.
In some embodiments, the switch module includes a first switch and a second switch;
The two ends of the first switch are respectively connected with the power output end of the first power module and the power input end of the first power amplifier; the two ends of the second switch are respectively connected with the power output end of the second power supply module and the power input end of the first power amplifier; the first opening and closing state is that the first switch is in a closed state, and the second switch is in an open state; the second opening and closing state is that the first switch is in an opening state and the second switch is in a closing state.
That is, the first switch is responsible for controlling the connection path between the first power module 111 and the first power amplifier 131, and the second switch is responsible for controlling the connection path between the second power module 112 and the second power amplifier 132.
It should be noted that the first switch and the second switch may be common switching devices, or may be switching circuits with switching functions, which are formed by other devices, for example, switching circuits formed by MOS transistors.
In some embodiments, the switch module comprises a single pole double throw switch;
The combined end of the single-pole double-throw switch is connected with the power input end of the first power amplifier, the first split end and the second split end of the single-pole double-throw switch are respectively connected with the power output ends of the first power supply module and the second power supply module, the first opening and closing state is that the combined end of the single-pole double-throw switch is communicated with the first split end, and the combined end of the single-pole double-throw switch is communicated with the second split end.
Fig. 4 is a schematic diagram of a second principle structure of a radio frequency circuit according to an embodiment of the present application, where, as shown in fig. 4, a first power amplifier and the second power amplifier respectively include an enable control terminal; the enabling control end is used for accessing an enabling control signal to enable the power amplifier to be in an operating state.
It should be noted that, the terminal performs a network searching operation, detects the currently connectable base station, and selects a working power amplifier according to the type of the base station. For example, when the terminal searches for the LTE base station of the first communication frequency band, an enable signal is sent to the first power amplifier, and the first power amplifier enters into a working state according to the enable signal; when the terminal searches an NR base station of a second communication frequency band, an enabling signal is sent to a second power amplifier, and the second power amplifier enters a working state according to the enabling signal; if the second power amplifier does not receive the enabling signal, the second power amplifier enters a non-working state, and even if the connection path of the second power module and the second power amplifier is conducted, power is not supplied to the second power module.
In some embodiments, the second power amplifier is connected to the first power module and the second power module through the switch module, respectively; the second power amplifier is further used for supporting a first communication connection of a second communication frequency band; when the switch module is in a first opening and closing state, the second power module is communicated with the communication path of the second power amplifier; when the switch module is in a second opening and closing state, the communication path of the first power module and the second power amplifier is conducted.
That is, the switch module is further configured to control a connection state of a connection path between the first power module and the second power amplifier, and a connection state of a connection path between the second power module and the second power amplifier.
In some embodiments, the switch module may include a third switch and a fourth switch, and the first power amplifier is connected to the first power module and the second power module simultaneously through the third switch; the second power amplifier is connected with the first power supply module and the second power supply module through the fourth switch at the same time; when the third switch and the fourth switch are in a first switching state, the first power supply module is conducted with the communication path of the first power amplifier, and the fourth switch is conducted with the communication path of the second power amplifier; when the third switch and the fourth switch are in a second opening and closing state, the second power supply module is conducted with the communication path of the first power amplifier, and the first power supply module is conducted with the communication path of the second power amplifier.
When the first switch is in a first open-close state, the third switch supplies power to the first power amplifier, and the second power module supplies power to the second power amplifier; and in the second opening and closing state, the first power supply module supplies power to the second power amplifier, and the second power supply module supplies power to the first power amplifier.
That is, the third switch and the fourth switch in the embodiment of the present application are used to control the communication path between the power amplifier and the power module to be turned on, and are also used to gate the power amplifier, without gating the power amplifier by the enable control signal.
In some embodiments, the third switch and the fourth switch may be comprised of common switching devices, such as single pole single throw switches, single pole double throw switches; the switching circuit with the switching function can also be composed of other devices, for example, a switching circuit composed of MOS tubes.
By adopting the technical scheme, the switch module is controlled to be in different opening and closing states by adding the switch module, so that the first power amplifier can be connected to the matched power module when being used for different communication connection, and the radio frequency circuit is not required to be added with an additional power module, but the ready-made power module is multiplexed, the configuration of the power module is saved, and the production cost is controlled.
Fig. 5 is a schematic diagram of a third principle structure of a radio frequency circuit according to an embodiment of the present application, as shown in fig. 5, the radio frequency circuit may specifically include: a first power supply module 111, a second power supply module 112, a switch module 12, a first power amplifier 131, a second power amplifier 132, and a third power amplifier 133; wherein,
The first power amplifier 131 is used for a first communication connection and a second communication connection of a first communication frequency band, and the second power amplifier 132 is used for a second communication connection of a second communication frequency band; the third power amplifier 133 is configured to be used for a first communication connection in a third communication band;
The first power module 111 is connected to the first power amplifier 131; the first power module 111 is connected to the third power amplifier 133;
The second power module 112 is connected to the first power amplifier 131 and the second power amplifier 132;
when the switch module 12 is in the first open/close state, the communication path between the first power module 111 and the first power amplifier 131 is controlled to be conducted;
When the switch module 12 is in the second open-close state, the communication path between the second power module 112 and the first power amplifier 131 is controlled to be conducted.
It should be noted that the first communication band, the second communication band, and the third communication band are different communication bands, for example LB, MB, HB, UHB. The first power amplifier is used for two communication connections, the second power amplifier and the third power amplifier can be used for one communication connection or two communication connections, and as the first power amplifier needs different power supply modules to supply power under the two communication connections respectively, the switch module is added to control the first power amplifier to be communicated with different power supply modules under the different communication connections.
In some embodiments, the first power supply module is provided with an average power tracking APT mode, the second power supply module is provided with an envelope tracking ET mode, the first communication connection is a long term evolution LTE connection, and the second communication connection is a new air interface NR connection.
In general, the power supply module comprises two working modes, namely an APT mode and an ET mode, wherein the output voltages of the APT mode and the ET mode can be adjusted in real time according to the output power of the PA, but the adjustment modes of the output voltages are different, the basic principle of the ET mode is that the power amplifier always works in a saturated state, the magnitude of the power supply voltage is adjusted in real time by tracking the envelope of an input signal, and the actual output of the power amplifier is determined by the magnitude of the input signal; the basic principle of the APT mode is generally to adjust the supply voltage of the power amplifier according to the output power of the power amplifier by means of an algorithm, the actual output power of the power amplifier still being determined by the magnitude of the input signal.
The cost of the power supply module in the ET mode is higher than that of the power supply module in the APT mode, and the power consumption reduction capability of the power supply module in the ET mode is higher than that of the power supply module in the APT mode. Therefore, in order to achieve both cost and power consumption, it is common practice for LTE to use APT mode power supply and for NR to use ET mode power supply, and if the PA has both APT and ET modes, the PA will use ET mode power supply when designing the system.
In some embodiments, the first communications band comprises a 28 band. The 28 frequency band range is 703-803MHz, wherein the uplink frequency band is 703-748MHz, and the downlink frequency band is 758-803MHz.
It should be noted that, the 28 frequency band is called "B28" as the LTE frequency band, and is called "n28" network as the 5G frequency band, where the n28 frequency band is called the 5G communication frequency band in the case of SA, the terminal is separately connected to the NR base station in the n28 frequency band, where the first power amplifier needs to be powered by the second power module (i.e. powered by the ET mode), and the B28 frequency band is called the LTE communication frequency band in the NSA, where the first power amplifier needs to be powered by the first power module.
In some embodiments, the first, second and third power amplifiers each include an enable control terminal; the enabling control end is used for accessing an enabling control signal to enable the power amplifier to be in an operating state.
It should be noted that, the terminal performs a network searching operation, detects the currently connectable base station, and selects a working power amplifier according to the type of the base station. For example, when the terminal searches for the LTE base station of the first communication frequency band, an enable signal is sent to the first power amplifier, and the first power amplifier enters into a working state according to the enable signal; when the terminal searches an NR base station of a second communication frequency band, an enabling signal is sent to a second power amplifier, and the second power amplifier enters a working state according to the enabling signal; when the terminal searches an LTE base station of a third communication frequency band, sending an enabling signal to the first power amplifier, and enabling the third power amplifier to enter a working state according to the enabling signal; if the third power amplifier does not receive the enabling signal, the third power amplifier enters a non-working state, and even if the connecting path of the third power module and the first power amplifier is conducted, power is not supplied to the third power module.
Fig. 6 is a schematic structural diagram of a fourth principle of the radio frequency circuit in the embodiment of the present application, as shown in fig. 6, the radio frequency circuit may specifically include: a first power supply module 111, a second power supply module 112, a switch module 12, a first power amplifier 131, a second power amplifier 132, and a fourth power amplifier 134; wherein,
The first power amplifier 131 is used for a first communication connection and a second communication connection of a first communication frequency band, and the second power amplifier 132 is used for a second communication connection of a second communication frequency band; the fourth power amplifier 134 is formed by combining a first sub-power amplifier and a second sub-power amplifier; the first sub-power amplifier is used for supporting a first communication connection of a fourth communication frequency band, and the second sub-power amplifier is used for supporting a second communication connection of a fifth communication frequency band;
The first power module 111 is connected to the first power amplifier 131; the first power supply module is connected with the first sub-power amplifier;
the second power module 112 is connected to the first power amplifier 131 and the second power amplifier 132; the second power supply module is connected with the second sub-power amplifier;
when the switch module 12 is in the first open/close state, the communication path between the first power module 111 and the first power amplifier 131 is controlled to be conducted;
When the switch module 12 is in the second open-close state, the communication path between the second power module 112 and the first power amplifier 131 is controlled to be conducted.
It should be noted that, the first power amplifier and the first sub-power amplifier are used for supporting the first communication connection for implementing different communication frequency bands, and share the first power module; the second power amplifier and the second sub-power amplifier are used for supporting second communication connection for realizing different communication frequency bands, and share the second power supply module.
The fourth power amplifier is composed of two sub-power amplifiers, can be used for two communication connection of two communication frequency bands, and comprises two power input ends which are respectively connected with two power supply modules. Specifically, the two communication bands may be lb+mb, mb+hb, hb+uhb, and the like.
In some embodiments, the first power amplifier and the second power amplifier each include an enable control terminal; the enabling control end is used for accessing an enabling control signal to enable the power amplifier to be in an operating state. Correspondingly, the fourth power amplifier comprises two enabling control ends, namely an enabling control end of the first sub power amplifier and an enabling control end of the second sub power amplifier.
It should be noted that, the radio frequency circuit provided by the embodiment of the application includes the first power amplifier and the second power amplifier, and further includes the third power amplifier and/or the fourth power amplifier, and the number of each power amplifier can be set arbitrarily, and the power supply mode of each power amplifier can use the power supply mode provided by the application.
Fig. 7 is a schematic diagram of a fifth principle structure of a radio frequency circuit according to an embodiment of the present application, as shown in fig. 7, the radio frequency circuit may specifically include: a first power supply module 111, a second power supply module 112, a switch module 12, a first power amplifier 131 and a second power amplifier 132; wherein,
The first power amplifier 131 is connected to the first power module 111 and the second power module 112 through the switch module 12 at the same time;
The second power amplifier 132 is connected to the first power module 111 and the second power module 112 through the switch module 12 at the same time;
the first power amplifier 131 is used for a first communication connection and a second communication connection of a first communication frequency band, and the second power amplifier 132 is used for the first communication connection and the second communication connection of a second communication frequency band;
When the switch module 12 is in the first open/close state, the communication path between the first power module 111 and the first power amplifier 131 is controlled to be conducted, and the communication path between the second power module 112 and the second power amplifier 132 is controlled to be conducted;
When the switch module 12 is in the second open/close state, the communication path between the first power module 111 and the second power amplifier 132 is controlled to be conducted, and the communication path between the second power module 112 and the first power amplifier 131 is controlled to be conducted.
Here, the switch module is used for controlling the connection states of the four connection paths between the first power module and the second power module and the first power amplifier and the second power amplifier. The four connection paths include a connection path between the first power amplifier and the first power module, a connection path between the first power amplifier and the second power module, a connection path between the second power amplifier and the first power module, and a connection path between the second power amplifier and the second power module.
In practical application, the switch module can be formed by combining a common single-pole single-throw switch, a single-pole double-throw switch and a switch circuit with a switch function.
As shown in fig. 7, the switch module includes a third switch and a fourth switch; the third switch and the fourth switch are single-pole double-throw switches, a combining end of the third switch is connected with a power output end of the first power supply module, and a combining end of the fourth switch is connected with a power output end of the second power supply module; the power supply input ends of the first power amplifier and the second power amplifier are respectively connected with the first shunt end and the second shunt end of the third switch and the fourth switch; the first opening and closing state is that the combining end of the third switch is communicated with the first branching end, and the combining end of the fourth switch is communicated with the second branching end; the second open-close state (i.e. the open-close state in fig. 7) is that the combining end of the third switch is communicated with the second shunt end, and the combining end of the fourth switch is communicated with the first shunt end.
It should be noted that, in the case of only one communication connection, the combining end of one switch is connected to one branching end, and the other switch is not connected to both branching ends.
The following further illustrates an example in which the first power module is an APT IC and the second power module is an ET IC.
Fig. 8 is a schematic diagram of a sixth principle structure of a radio frequency circuit according to an embodiment of the present application, as shown in fig. 8, the radio frequency circuit includes a switch module, a power module and a power amplifier, the power module includes APT IC and ET IC, and the power amplifier includes: LB PA, MHB PA and UHB PA.
Here, the MHB PA may be obtained by combining two PAs of the MB PA and the HB PA into one PA, and thus, the MHB PA supports communication connection of two different communication bands.
The APT IC is used to supply power to LB PA and MB PA, and the ET IC is used to supply power to LB PA, HB PA and UHB PA.
The LB PA is connected with the APT IC and the ET IC through the switch module, and the APT IC is controlled to supply power to the LB PA or the ET IC is controlled to supply power to the LB PA through setting the opening and closing state of the switch module.
In some embodiments, the switch module may include two single pole single throw switches, or one single pole double throw switch.
Fig. 9 is a schematic structural diagram of a seventh principle of a radio frequency circuit in an embodiment of the present application, as shown in fig. 9, a switch module includes a switch 1 and a switch 2, a first on-off state is that the switch 1 is in an on state, the switch 2 is in an off state, an APT IC is used to supply power to an LB PA, and the LB PA works in an LTE mode.
Fig. 10 is a schematic structural diagram of an eighth principle of the radio frequency circuit in the embodiment of the present application, as shown in fig. 10, the switch module includes a switch 1 and a switch 2, the second on-off state is that the switch 1 is in an off state, the switch 2 is in an on state, the LB PA uses ET IC to supply power, and the LB PA works in an NR mode.
Fig. 11 is a schematic structural diagram of a ninth principle of the radio frequency circuit in the embodiment of the present application, as shown in fig. 11, the switch module includes a single pole double throw switch, the first open-close state is that the single pole double throw switch is closed to a terminal corresponding to the APT IC, and the second open-close state is that the single pole double throw switch is closed to the ET IC.
By adding two power switches, the requirement on a power supply IC is reduced, an ET IC is not required to be independently arranged for the LB PA, only an APT IC is required, and the cost of the added switch is far lower than that of the added ET IC.
Here, the LB PA may be a PA with an n28 communication frequency band, and by analyzing a power supply network in a NSA/SA scene, by using an external power supply integration mode and adding an external switch to switch the LB PA power supply, the problem that the radio frequency front end architecture increases n28 SA supporting capability is solved with lower cost.
In order to implement the radio frequency circuit of the embodiment of the present application, the embodiment of the present application also provides a control method of the radio frequency circuit based on the same inventive concept, as shown in fig. 12, the method includes:
step 1201: detecting a current communication state;
step 1202: the control switch module is in a first opening and closing state, so that the communication path between the first power module and the first power amplifier is conducted;
step 1203: the control switch module is in a second opening and closing state, so that the communication path between the second power module and the first power amplifier is conducted.
It should be noted that the method may be used to control any of the rf circuits in the embodiments of the present application.
The radio frequency circuit includes: the power supply comprises a first power supply module, a second power supply module, a switch module, a first power amplifier and a second power amplifier; the first power amplifier is respectively connected with the first power supply module and the second power supply module through the switch module; the second power amplifier is connected with the second power supply module; the first power amplifier is used for supporting a first communication connection and a second communication connection of a first communication frequency band, and the second power amplifier is used for supporting a second communication connection of a second communication frequency band; when the switch module is in a first opening and closing state, the first power module is communicated with the communication path of the first power amplifier to provide power for the first communication connection supported by the first power amplifier; when the switch module is in a second opening and closing state, the second power module is conducted with the communication path of the first power amplifier to provide power for second communication connection supported by the first power amplifier.
In some embodiments, the switch module includes a first switch and a second switch; the two ends of the first switch are respectively connected with the power output end of the first power module and the power input end of the first power amplifier; and two ends of the second switch are respectively connected with the power output end of the second power supply module and the power input end of the first power amplifier.
Specifically, the first switch is controlled to be in a closed state, the second switch is controlled to be in an open state, the communication path between the first power module and the first power amplifier is conducted, and the communication path between the second power module and the first power amplifier is disconnected; the first switch is controlled to be in a closed state, the second switch is controlled to be in an open state, the communication path between the second power supply module and the first power amplifier is conducted, and the communication path between the first power supply module and the first power amplifier is disconnected.
In some embodiments, the first power supply module is provided with an average power tracking APT mode, the second power supply module is provided with an envelope tracking ET mode, the first communication connection is a long term evolution LTE connection, and the second communication connection is a new air interface NR connection.
In some embodiments, the first communications band comprises a 28 band. The 28 frequency band range is 703-803MHz, wherein the uplink frequency band is 703-748MHz, and the downlink frequency band is 758-803MHz.
It should be noted that, the 28 frequency band is called "B28" as the LTE frequency band, and is called "n28" network as the 5G frequency band, where the n28 frequency band is called the 5G communication frequency band in the case of SA, the terminal is separately connected to the NR base station in the n28 frequency band, where the first power amplifier needs to be powered by the second power module (i.e. powered by the ET mode), and the B28 frequency band is called the LTE communication frequency band in the NSA, where the first power amplifier needs to be powered by the first power module.
In some embodiments, the radio frequency circuit further comprises a third power amplifier, the third power amplifier being connected to the first power supply module; the third power amplifier is configured to support a first communication connection of a third communication band.
In some embodiments, the radio frequency circuit further comprises a fourth power amplifier, the fourth power amplifier being formed by combining the first sub-power amplifier and the second sub-power amplifier; the first sub-power amplifier is connected with the first power supply module and is used for supporting first communication connection of a fourth communication frequency band; the second sub-power amplifier is connected with the second power supply module, and the second sub-power amplifier is used for supporting second communication connection of a fifth communication frequency band.
In some embodiments, the first power amplifier and the second power amplifier each include an enable control terminal; the enabling control end is used for accessing an enabling control signal to gate the power amplifier to be in a working state.
In some embodiments, the second power amplifier is connected to the first power module and the second power module through the switch module, respectively; the second power amplifier is further used for supporting a first communication connection of a second communication frequency band; when the switch module is in a first opening and closing state, the second power module is communicated with the communication path of the second power amplifier; when the switch module is in a second opening and closing state, the communication path of the first power module and the second power amplifier is conducted.
In some embodiments, the switch module includes a third switch and a fourth switch; the combining end of the third switch is connected with the power output end of the first power supply module, and the combining end of the fourth switch is connected with the power output end of the second power supply module; the power supply input ends of the first power amplifier and the second power amplifier are respectively connected with the first shunt end and the second shunt end of the third switch and the fourth switch; the first opening and closing state is that the combining end of the third switch is communicated with the first branching end, and the combining end of the fourth switch is communicated with the second branching end; the second opening and closing state is that the combining end of the third switch is communicated with the second branching end, and the combining end of the fourth switch is communicated with the first branching end.
By adding the switch module, the switch module is controlled to be in different opening and closing states, so that the first power amplifier can be connected to the matched power module when being used for different communication connection, and the radio frequency circuit is not required to be added with an additional power module, but is multiplexed with the ready-made power module, the configuration of the power module is saved, and the production cost is controlled.
In order to implement the radio frequency circuit of the embodiment of the present application, the embodiment of the present application also provides a communication device based on the same inventive concept, where the communication device includes: the radio frequency circuit of any one of the embodiments of the present application.
The embodiment of the application also provides a terminal based on the same inventive concept, which comprises any one of the communication devices.
The terminal described in the present application has a wireless communication function, and the terminal may include, for example, a mobile phone, a tablet computer, a notebook computer, a palm computer, a Personal digital assistant (Personal DIGITAL ASSISTANT, PDA), a Portable media player (Portable MEDIA PLAYER, PMP), a navigation device, a wearable device, a smart band, a camera, and the like.
By adding the switch module, the switch module is controlled to be in different opening and closing states, so that the first power amplifier can be connected to the matched power module when being used for different communication connection, and the radio frequency circuit is not required to be added with an additional power module, but is multiplexed with the ready-made power module, the configuration of the power module is saved, and the production cost is controlled.
The technical schemes described in the embodiments of the present application may be arbitrarily combined without any collision.
In the several embodiments provided in the present application, it should be understood that the disclosed method and apparatus may be implemented in other ways. The above-described embodiments are merely illustrative, and for example, the division of units is merely a logical function division, and other divisions may be implemented in practice, such as: multiple units or components may be combined or may be integrated into another system, or some features may be omitted, or not performed. In addition, the various components shown or discussed may be coupled or directly coupled or communicatively coupled to each other via some interface, whether indirectly coupled or communicatively coupled to devices or units, whether electrically, mechanically, or otherwise.
The units described as separate units may or may not be physically separate, and units displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units; some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.
In addition, each functional unit in each embodiment of the present application may be integrated in one processing unit, or each unit may be separately used as one unit, or two or more units may be integrated in one unit; the integrated units may be implemented in hardware or in hardware plus software functional units.
The foregoing is merely illustrative of the present application, and the present application is not limited thereto, and any person skilled in the art will readily recognize that variations or substitutions are within the scope of the present application.
Claims (14)
1. A radio frequency circuit, the radio frequency circuit comprising: the power supply comprises a first power supply module, a second power supply module, a switch module, a first power amplifier, a second power amplifier and a third power amplifier; wherein,
The first power amplifier is respectively connected with the first power supply module and the second power supply module through the switch module;
the second power amplifier is connected with the second power supply module;
the third power amplifier is connected with the first power supply module;
The first power amplifier is used for supporting a first communication connection and a second communication connection of a first communication frequency band, the second power amplifier is used for supporting a second communication connection of a second communication frequency band, and the third power amplifier is used for supporting a first communication connection of a third communication frequency band;
When the switch module is in a first opening and closing state, the first power module is communicated with the communication path of the first power amplifier to provide power for the first communication connection supported by the first power amplifier;
When the switch module is in a second opening and closing state, the second power module is conducted with the communication path of the first power amplifier to provide power for second communication connection supported by the first power amplifier.
2. The radio frequency circuit of claim 1, wherein the switch module comprises a first switch and a second switch;
the two ends of the first switch are respectively connected with the power output end of the first power module and the power input end of the first power amplifier;
the two ends of the second switch are respectively connected with the power output end of the second power supply module and the power input end of the first power amplifier;
The first opening and closing state is that the first switch is in a closed state, and the second switch is in an open state;
the second opening and closing state is that the first switch is in an opening state and the second switch is in a closing state.
3. The radio frequency circuit of claim 1, further comprising a fourth power amplifier, the fourth power amplifier being comprised of a combination of a first sub-power amplifier and a second sub-power amplifier;
The first sub-power amplifier is connected with the first power supply module and is used for supporting first communication connection of a fourth communication frequency band;
the second sub-power amplifier is connected with the second power supply module, and the second sub-power amplifier is used for supporting second communication connection of a fifth communication frequency band.
4. The radio frequency circuit of claim 1, wherein the first power amplifier and the second power amplifier each comprise an enable control terminal; the enabling control end is used for accessing an enabling control signal to gate the power amplifier to be in a working state.
5. The radio frequency circuit of claim 1, wherein the radio frequency circuit comprises,
The second power amplifier is respectively connected with the first power supply module and the second power supply module through the switch module;
the second power amplifier is further used for supporting a first communication connection of a second communication frequency band;
when the switch module is in a first opening and closing state, the second power module is communicated with the communication path of the second power amplifier;
When the switch module is in a second opening and closing state, the communication path of the first power module and the second power amplifier is conducted.
6. The radio frequency circuit of claim 5, wherein the switch module comprises a third switch and a fourth switch;
The combining end of the third switch is connected with the power output end of the first power supply module, and the combining end of the fourth switch is connected with the power output end of the second power supply module; the power supply input ends of the first power amplifier and the second power amplifier are respectively connected with the first shunt end and the second shunt end of the third switch and the fourth switch;
The first opening and closing state is that the combining end of the third switch is communicated with the first branching end, and the combining end of the fourth switch is communicated with the second branching end;
the second opening and closing state is that the combining end of the third switch is communicated with the second branching end, and the combining end of the fourth switch is communicated with the first branching end.
7. The radio frequency circuit of claim 1, wherein the first power supply module has an average power tracking APT mode, the second power supply module has an envelope tracking ET mode, the first communication connection is a long term evolution LTE connection, and the second communication connection is a new air interface NR connection.
8. The radio frequency circuit of claim 7, wherein the first communications band comprises a 28 band.
9. A method of controlling a radio frequency circuit, the radio frequency circuit comprising the radio frequency circuit of any one of claims 1-8, the method comprising:
detecting a current communication state;
the control switch module is in a first opening and closing state, so that the communication path between the first power module and the first power amplifier is conducted;
The control switch module is in a second opening and closing state, so that the communication path between the second power module and the first power amplifier is conducted.
10. The method of claim 9, wherein the switch module comprises a first switch and a second switch; the two ends of the first switch are respectively connected with the power output end of the first power module and the power input end of the first power amplifier; the two ends of the second switch are respectively connected with the power output end of the second power supply module and the power input end of the first power amplifier;
The method comprises the following steps:
The first switch is controlled to be in a closed state, the second switch is controlled to be in an open state, the communication path between the first power module and the first power amplifier is conducted, and the communication path between the second power module and the first power amplifier is disconnected;
The first switch is controlled to be in an open state, the second switch is controlled to be in a closed state, the communication path between the second power supply module and the first power amplifier is conducted, and the communication path between the first power supply module and the first power amplifier is disconnected.
11. The method of claim 9, wherein the first power module is provided with an average power tracking APT mode, the second power module is provided with an envelope tracking ET mode, the first communication connection is a long term evolution LTE connection, and the second communication connection is a new air interface NR connection.
12. The method of claim 11, wherein the first communications band comprises a 28-band.
13. A communication device comprising the radio frequency circuit of any one of claims 1 to 8.
14. A terminal, characterized in that it comprises the communication device of claim 13.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111092621A (en) * | 2019-11-13 | 2020-05-01 | 维沃移动通信有限公司 | Radio frequency circuit, control method and electronic equipment |
| CN111277296A (en) * | 2020-02-25 | 2020-06-12 | Oppo广东移动通信有限公司 | RF circuits, RF chips and electronic equipment |
| CN112073085A (en) * | 2020-09-03 | 2020-12-11 | 维沃移动通信有限公司 | Radio frequency circuit, electronic equipment and radio frequency control method |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111092621A (en) * | 2019-11-13 | 2020-05-01 | 维沃移动通信有限公司 | Radio frequency circuit, control method and electronic equipment |
| CN111277296A (en) * | 2020-02-25 | 2020-06-12 | Oppo广东移动通信有限公司 | RF circuits, RF chips and electronic equipment |
| CN112073085A (en) * | 2020-09-03 | 2020-12-11 | 维沃移动通信有限公司 | Radio frequency circuit, electronic equipment and radio frequency control method |
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