CN114696867A - 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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- CN114696867A CN114696867A CN202011591954.6A CN202011591954A CN114696867A CN 114696867 A CN114696867 A CN 114696867A CN 202011591954 A CN202011591954 A CN 202011591954A CN 114696867 A CN114696867 A CN 114696867A
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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 open-close state, and the first power supply module is communicated with the communication path of the first power amplifier; and the second power supply module is in a second opening and closing state and is communicated with the communication path of the first power amplifier. Like this, the control switch module is in different states that opens and shuts, makes first power amplifier be connected to the power module of matching 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 communications 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 that the working efficiency of the power supply is better under higher radio frequency output power, the voltage of the power amplifier can be adjusted in real time to adapt to the power change of the radio frequency amplifier, so that the power consumption of the radio frequency power amplifier is reduced. Two most commonly used voltage management technologies in the industry are an Average Power Tracking (APT) technology and an Envelope Tracking (ET) technology, both of which can track Power changes of a radio frequency Power amplifier, adjust the voltage of the Power amplifier in real time, and further improve the working efficiency.
For a terminal with an endec function, the terminal can communicate with both an LTE base station and a 5G NR base station in a connected state, and currently, global LTE has multiple frequency bands such as Low Band (LB)/intermediate frequency (mid Band, MB)/High frequency (HB), and also has multiple frequency bands such as LB/MB/HB/Ultra High Band (UHB) in 5G. The PA of each frequency band needs to be connected with the apic or the ETIC for power supply, which results in increased requirements of the apic and the ETIC, and thus higher production cost.
Disclosure of Invention
In order to solve the foregoing technical problems, embodiments of the present application desirably 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, a radio frequency circuit is provided, which 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; wherein the content of the first and second substances,
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 supply module is conducted with the communication path of the first power amplifier to provide power for a first communication connection supported by the first power amplifier;
when the switch module is in a second open-close state, the second power supply module is conducted with the communication path of the first power amplifier to provide power for a second communication connection supported by the first power amplifier.
In a second aspect, there is provided a radio frequency circuit control method, where the radio frequency circuit includes the radio frequency circuit of any one of the first aspects, the method including:
detecting a current communication state;
controlling a switch module to be in a first opening and closing state, so that the first power supply module is conducted with a communication path of the first power amplifier;
and controlling the switch module to be in a second opening and closing state, so that the second power supply module is conducted with the communication path of the first power amplifier.
In a third aspect, a communication device is provided, which includes the radio frequency circuit of any one of the first aspect.
In a fourth aspect, a terminal is provided, where the terminal includes the communication apparatus 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 supply module is conducted with the communication path of the first power amplifier to provide power for a first communication connection supported by the first power amplifier; when the switch module is in a second open-close state, the second power supply module is conducted with the communication path of the first power amplifier to provide power for a second communication connection supported by the first power amplifier. Therefore, by adding the switch module, the switch module is controlled to be in different opening and closing states, the first power amplifier can be connected to the matched power module when being used for different communication connections, an extra power module does not need to be added to the radio frequency circuit, the ready-made power module is reused, the configuration of the power module is saved, and the production cost is controlled.
Drawings
Fig. 1 is a schematic diagram of a first schematic structure of an rf circuit according to an embodiment of the present disclosure;
FIG. 2 is a schematic structural diagram of a double-link frame;
FIG. 3 is a schematic diagram of a power supply principle of a conventional RF circuit;
FIG. 4 is a schematic diagram of a second schematic structure of an RF circuit according to an embodiment of the present application;
fig. 5 is a schematic diagram of a third schematic structure of an rf circuit according to an embodiment of the present application;
FIG. 6 is a fourth schematic block diagram of an RF circuit according to an embodiment of the present application;
fig. 7 is a schematic diagram of a fifth schematic structure of an rf circuit according to an embodiment of the present application;
fig. 8 is a schematic structural diagram of a sixth principle of the rf circuit in the embodiment of the present application;
fig. 9 is a schematic diagram of a seventh schematic structure of an rf circuit in an embodiment of the present application;
fig. 10 is a schematic diagram of an eighth schematic structure of an rf circuit in an embodiment of the present application;
fig. 11 is a schematic diagram of a ninth schematic structure of an rf circuit in an embodiment of the present application;
fig. 12 is a flowchart illustrating a control method of an rf circuit according to an embodiment of the present disclosure.
Detailed Description
So that the manner in which the features and elements of the present embodiments can be understood in detail, a more particular description of the embodiments, briefly summarized above, may be had by reference to embodiments, some of which are illustrated in the appended drawings.
New Radio (NR) defines two types of networks, namely, an independent networking (SA) network and a Non-independent Networking (NSA) network. These two types of 5G networks coexist with Long Term Evolution (LTE) networks for a Long period and are associated with each other.
In the dependent networking, a terminal has an endec function, namely, Terrestrial Radio Access (EUTRA) and NR Dual Connectivity (endec) functions, and is generally called an Evolved Universal Mobile Telecommunications System (Universal Mobile Telecommunications System) of UMTS, and the endec function terminal can communicate with both an LTE base station and a 5G NR base station in a connected state.
The following describes in detail the technical solutions of the present application and how the technical solutions of the present application solve the above technical problems by embodiments and with reference to the drawings. The following several specific embodiments may be combined with each other, and details of the same or similar concepts or processes may not be repeated in some embodiments.
Fig. 1 is a schematic diagram of a first principle structure of a radio frequency circuit in an embodiment of the present application, and as shown in fig. 1, the radio frequency circuit may specifically include: a first power module 111, a second power module 112, a switch module 12, a first power amplifier 131 and a second power amplifier 132; wherein the content of the first and second substances,
the first power amplifier 131 is connected to the first power module 111 and the second power module 112 through the switch module 12;
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 a 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, and the terminal is capable of establishing different communication connections with different communication networks, that is, the terminal is capable of establishing a first communication connection and a second communication connection. The specific type of the terminal may not be limited in this application, and in some embodiments, the terminal may be any terminal that supports the above dual connection 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 diagram of a composition structure of a dual connection architecture, and as shown in fig. 2, the dual connection mode is an EN-DC mode or a next generation EN-DC (next generation EN-DC) mode, and a terminal 21 may establish an air interface connection with an LTE base station 22 (also referred to as a master node) to implement communication 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 an auxiliary node), so as to implement communication with the NR base station 23; the terminal 21 may also establish air interface connections with the LTE base station 22 and the NR base station 23 at the same time, so as to simultaneously implement communication with the LTE base station 22 and the NR base station 23. In the dual connectivity mode, the terminal 21 establishes two connections with the LTE base station 22 and the NR base station 23 at the same time, where the LTE base station 22 is mainly responsible for signaling transmission and the NR base station 23 is responsible for data transmission.
ENDC is a dual connection of 4G and 5G, in the current world, LTE has a plurality of frequency bands such as LB/MB/HB and the like, and 5G also has a plurality of frequency bands such as LB/MB/HB/UHB and the like, so that any combination of the two can generate a plurality of ENDC schemes, such as: LB + LB, LB + MB, LB + HB, MB + HB, LB + UHB, MB + UHB, HB + UHB, etc.
With the increase of the functional modules of the mobile phone and the volume reduction of the mobile phone, the power consumption of the mobile phone is higher and higher, and the stacking space reserved for the battery is also tense, so that the reduction of the power consumption becomes more and more important. For a radio frequency circuit, a Power Amplifier (PA) has large Power consumption, and in order to take cost and Power consumption into consideration, a general scheme is that LTE uses an APT Power supply mode and NR uses an ET Power supply mode, and if the PA has both an APT operating mode and an ET operating mode, the PA uses an ET IC to supply Power (can simultaneously support the APT and ET operating modes) during system design
If EN-DC of any frequency band combination needs to be supported, the power supply of each PA needs to support an ET working mode, as shown in FIG. 3, LB PA, MHB PA and UHB PA are respectively connected with ETIC.
In an embodiment of the present application, the first power module has an Average Power Tracking (APT) mode, the second power 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.
It should be noted that only two power modules need to be set to supply power to multiple power amplifiers in the radio frequency circuit, and in particular, for a first power amplifier used for two types of communication connection, a control switch is added to control the first power amplifier to be connected to a matched power module when different communication connections are realized, that is, the first power module is used for supplying power when the first power amplifier realizes the first communication connection, and the second power module is used for supplying power when the first power amplifier realizes the second communication connection.
The switch module is used for controlling the connection state of a connection path between the first power supply module and the first power amplifier and the connection state of a connection path between the second power supply module and the first power amplifier.
In some embodiments, the switch module comprises a first switch and a second switch;
two ends of the first switch are respectively connected with the power supply output end of the first power supply module and the power supply input end of the first power amplifier; two ends of the second switch are respectively connected with the power supply output end of the second power supply module and the power supply input end of the first power amplifier; the first switch is in a closed state, and the second switch is in an open state; the second on-off state is that the first switch is in an off state, and the second switch is in an on 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 a switching circuit with a switching function formed by other devices, for example, a switching circuit formed by MOS transistors.
In some embodiments, the switch module comprises a single pole double throw switch;
the circuit switching device comprises a single-pole double-throw switch, a first power amplifier, a second power amplifier, a single-pole double-throw switch and a power supply module, wherein the circuit switching end of the single-pole double-throw switch is connected with the power supply input end of the first power amplifier, the first circuit dividing end and the second circuit dividing end of the single-pole double-throw switch are respectively connected with the power supply output ends of the first power supply module and the second power supply module, the first switching state is that the circuit switching end of the single-pole double-throw switch is communicated with the first circuit dividing end, and the circuit switching end of the single-pole double-throw switch is communicated with the second circuit dividing end.
Fig. 4 is a schematic diagram of a second schematic structure of a radio frequency circuit in an embodiment of the present application, and as shown in fig. 4, the first power amplifier and the second power amplifier respectively include an enable control terminal; the enabling control end is used for accessing the enabling control signal so as to gate the power amplifier to be in the working state.
It should be noted that the terminal performs a network searching operation, detects a currently connectable base station, and selects an operating power amplifier according to the type of the base station. For example, when the terminal searches for an LTE base station of a first communication frequency band, an enable signal is sent to a first power amplifier, and the first power amplifier enters 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 enable 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 cannot be supplied to the second power module.
In some embodiments, the second power amplifier is respectively connected to the first power supply module and the second power supply module through the switch module; the second power amplifier is further configured to support a first communication connection in a second communication band; when the switch module is in a first opening and closing state, the second power supply module is conducted with the communication path of the second power amplifier; when the switch module is in a second opening and closing state, the first power supply module is conducted with the communication path of the second power amplifier.
That is to say, 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 simultaneously connected to the first power supply module and the second power supply module through the third switch; the second power amplifier is simultaneously connected with the first power supply module and the second power supply module through the fourth switch; when the third switch and the fourth switch are in a first opening and closing 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 power supply module is in a first open-close state, the third switch supplies power to the first power amplifier, and the second power supply module supplies power to the second power amplifier; and when the second power supply module is in the second open-close 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 to say, 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 conducted, and 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 switch circuit with a switching function may be formed by other devices, for example, a switch circuit formed by MOS transistors.
By adopting the technical scheme, the switch module is additionally arranged, the switch module is controlled to be in different opening and closing states, the first power amplifier can be connected to the matched power supply module when being used for different communication connections, the radio frequency circuit is not required to be additionally provided with the power supply module, the ready-made power supply module is reused, the configuration of the power supply module is saved, and the production cost is controlled.
Fig. 5 is a schematic diagram of a third schematic structure of a radio frequency circuit in an embodiment of the present application, and as shown in fig. 5, the radio frequency circuit may specifically include: a first power module 111, a second power module 112, a switch module 12, a first power amplifier 131, a second power amplifier 132 and a third power amplifier 133; wherein the content of the first and second substances,
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 used for a first communication connection of a third communication frequency 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 a 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 frequency band, the second communication frequency band, and the third communication frequency band are different communication frequency bands, such as LB, MB, HB, and UHB. The first power amplifier is used for two kinds of communication connection, and the second power amplifier and the third power amplifier can be used for one kind of communication connection and also can be used for two kinds of communication connection, because the power supply of the different power supply modules is needed respectively under two kinds of communication connection of first power amplifier, consequently increased the switch module and controlled first power amplifier and different power supply modules to communicate under different communication connection.
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.
Generally, the power supply module comprises two working modes, namely an APT mode and an ET mode, output voltages of the APT mode and the ET mode can be adjusted in real time according to output power of a Power Amplifier (PA), only the output voltage adjustment modes are different, the basic principle of the ET mode is that the power amplifier always works in a saturation 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 by an algorithm according to the output power of the power amplifier, the actual output power of the power amplifier still being determined by the magnitude of the input signal.
The cost of the ET mode power supply module is higher than that of the APT mode power supply module, and the power consumption of the ET mode power supply module is lower than that of the APT mode power supply module. Therefore, in order to achieve cost and power consumption, the common practice is that LTE uses APT mode power supply, NR uses ET mode power supply, and if PA has both APT mode and ET mode, the PA will use ET mode power supply when the system is designed.
In some embodiments, the first communications band comprises a 28 band. The band range of the 28 band is 703-803MHz, wherein the uplink band is 703-748MHz, and the downlink band is 758-803 MHz.
It should be noted that the 28 frequency band is referred to as "B28" as the LTE frequency band, and is referred to as "n 28" as the 5G frequency band, the n28 frequency band is in SA, the n28 frequency band is referred to as the 5G communication frequency band, the terminal is separately connected to the NR base station in the n28 frequency band, at this time, the first power amplifier needs the second power module to supply power (i.e., to supply power using the ET mode), and in NSA, the B28 frequency band is referred to as the LTE communication frequency band, at this time, the first power amplifier needs the first power module to supply power.
In some embodiments, the first power amplifier, the second power amplifier, and the third power amplifier each include an enable control terminal; the enabling control end is used for accessing the enabling control signal so as to gate the power amplifier to be in the working state.
It should be noted that, the terminal performs a network searching operation, detects a currently connectable base station, and selects an operating power amplifier according to the type of the base station. For example, when the terminal searches for an LTE base station in the first communication frequency band, an enable signal is sent to the first power amplifier, and the first power amplifier enters 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, an enabling signal is sent to the first power amplifier, and the third power amplifier enters a working state according to the enabling signal; if the third power amplifier does not receive the enable signal, the third power amplifier enters a non-working state, and even if the connection path of the third power module and the first power amplifier is conducted, power cannot be supplied to the third power module.
Fig. 6 is a schematic diagram of a fourth principle structure of a radio frequency circuit in an embodiment of the present application, and as shown in fig. 6, the radio frequency circuit may specifically include: a first power module 111, a second power 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 and the second end of the pipe are connected with each other,
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 a 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 realization of the first communication connection of different communication frequency bands, and the first power amplifier and the first sub power amplifier share the first power module; the second power amplifier and the second sub power amplifier are used for supporting the realization of second communication connection of different communication frequency bands, and share the second power module.
The fourth power amplifier comprises two sub power amplifiers and can be used for two communication connections of two communication frequency bands, and the fourth power amplifier comprises two power supply input ends which are respectively connected with the two power supply modules. Specifically, the two communication frequency 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 the enabling control signal so as to gate the power amplifier to be in the working state. Correspondingly, the fourth power amplifier comprises two enable control terminals, namely an enable control terminal of the first sub power amplifier and an enable control terminal of the second sub power amplifier.
It should be noted that the radio frequency circuit provided in the embodiment of the present application includes, in addition to the first power amplifier and the second power amplifier, a third power amplifier and/or a fourth power amplifier, and the number of each power amplifier may be set arbitrarily, and the power supply method provided in the present application may be used for each power amplifier.
Fig. 7 is a schematic diagram of a fifth schematic structure of a radio frequency circuit in an embodiment of the present application, and as shown in fig. 7, the radio frequency circuit may specifically include: a first power module 111, a second power module 112, a switch module 12, a first power amplifier 131 and a second power amplifier 132; wherein the content of the first and second substances,
the first power amplifier 131 is connected to the first power module 111 and the second power module 112 through the switch module 12;
the second power amplifier 132 is connected to the first power module 111 and the second power module 112 through the switch module 12;
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 first communication connection and 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, 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 configured to control connection states of four connection paths between the first power supply module and the second power supply module and between 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; here, the third switch and the fourth switch are single-pole double-throw switches, a closed end of the third switch is connected with the power output end of the first power module, and a closed end of the fourth switch is connected with the power output end of the second power 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 open-close state is that the closed end of the third switch is communicated with the first shunt end, and the closed end of the fourth switch is communicated with the second shunt end; the second open-close state (i.e. the open-close state shown in fig. 7) is that the close end of the third switch is communicated with the second shunt end, and the close 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 splitting end, and the other switch is not connected to both splitting ends.
The following further exemplifies the case where 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 schematic structure of a radio frequency circuit in an embodiment of the present application, and as shown in fig. 8, the radio frequency circuit includes a switch module, a power module, and a power amplifier, the power module includes an APT IC and an 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, i.e., MB PA and HB PA, into one PA, and thus, the MHB PA supports communication connection of two different communication bands.
The APT IC is used for supplying power to LB PA and MB PA, and the ET IC is used for supplying 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 by setting the opening and closing state of the switch module.
In some embodiments, the switch module can include two single pole, single throw switches, or one single pole, double throw switch.
Fig. 9 is a schematic diagram of a seventh schematic structure of a radio frequency circuit in an embodiment of the present application, and as shown in fig. 9, the switch module includes a switch 1 and a switch 2, where the first on-off state is that the switch 1 is in a closed state, the switch 2 is in an open state, the LB PA uses an APT IC to supply power, and the LB PA operates in an LTE mode.
Fig. 10 is a schematic diagram of an eighth schematic structure of the rf circuit in the embodiment of the present application, and as shown in fig. 10, the switch module includes a switch 1 and a switch 2, where the second on-off state is that the switch 1 is in an off state, the switch 2 is in a closed state, the LB PA uses an ET IC to supply power, and the LB PA operates in an NR mode.
Fig. 11 is a schematic diagram of a ninth schematic structure of the rf circuit in the embodiment of the present application, and 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 does not need to be independently arranged for an LB PA, only an APT IC is needed, and the cost for adding the switches is far lower than that for adding the ET IC.
Here, the LB PA may be a PA in an n28 communication band, and the problem of adding n28 SA support capability to the radio frequency front end architecture is solved at a lower cost by analyzing a power supply network in an NSA/SA scenario, in an external power supply integration manner, and switching the LB PA power supply with an external switch.
In order to implement the radio frequency circuit of the embodiment of the present application, based on the same inventive concept, the embodiment of the present application further provides a method for controlling a radio frequency circuit, as shown in fig. 12, the method includes:
step 1201: detecting a current communication state;
step 1202: controlling a switch module to be in a first opening and closing state, so that the first power supply module is communicated with a communication path of the first power amplifier;
step 1203: and controlling the switch module to be in a second opening and closing state, so that the second power supply module is conducted with the communication path of the first power amplifier.
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 supply module is conducted with the communication path of the first power amplifier to provide power for a first communication connection supported by the first power amplifier; when the switch module is in a second open-close state, the second power supply module is conducted with the communication path of the first power amplifier to provide power for a second communication connection supported by the first power amplifier.
In some embodiments, the switch module comprises a first switch and a second switch; two ends of the first switch are respectively connected with the power supply output end of the first power supply module and the power supply input end of the first power amplifier; and two ends of the second switch are respectively connected with the power supply output end of the second power supply module and the power supply 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 supply module and the first power amplifier is made to be conductive, and the communication path between the second power supply module and the first power amplifier is made to be disconnected; and controlling the first switch to be in a closed state and the second switch to be in an open state, so that 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 band range of the 28 band is 703-803MHz, wherein the uplink band is 703-748MHz, and the downlink band is 758-803 MHz.
It should be noted that the 28 frequency band is referred to as "B28" as the LTE frequency band, and is referred to as "n 28" as the 5G frequency band, the n28 frequency band is in SA, the n28 frequency band is referred to as the 5G communication frequency band, the terminal is separately connected to the NR base station in the n28 frequency band, at this time, the first power amplifier needs the second power module to supply power (i.e., to supply power using the ET mode), and in NSA, the B28 frequency band is referred to as the LTE communication frequency band, at this time, the first power amplifier needs the first power module to supply power.
In some embodiments, the radio frequency circuit further includes a third power amplifier, and the third power amplifier is connected to the first power module; the third power amplifier is configured to support a first communication connection in 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 used for supporting first communication connection of a fourth communication frequency band; the second sub power amplifier is connected with the second power 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 so as to gate the power amplifier to be in a working state.
In some embodiments, the second power amplifier is respectively connected to the first power supply module and the second power supply module through the switch module; the second power amplifier is further configured to support a first communication connection in a second communication band; when the switch module is in a first opening and closing state, the second power supply module is conducted with the communication path of the second power amplifier; when the switch module is in a second opening and closing state, the first power supply module is conducted with the communication path of the second power amplifier.
In some embodiments, the switch module comprises a third switch and a fourth switch; the closed end of the third switch is connected with the power output end of the first power supply module, and the closed 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 open-close state is that the closed end of the third switch is communicated with the first shunt end, and the closed end of the fourth switch is communicated with the second shunt end; the second open-close state is that the close end of the third switch is communicated with the second shunt end, and the close end of the fourth switch is communicated with the first shunt end.
By adopting the radio frequency circuit, the switch module is additionally arranged, the switch module is controlled to be in different opening and closing states, the first power amplifier can be connected to the matched power supply module when being used for different communication connections, the radio frequency circuit is not required to be additionally provided with the power supply module, the ready-made power supply module is reused, the configuration of the power supply module is saved, and the production cost is controlled.
To implement the rf circuit according to the embodiment of the present application, based on the same inventive concept, an embodiment of the present application further provides a communication apparatus, including: 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, and the terminal comprises any one of the communication devices.
The terminal described in the present application has a wireless communication function, and may include, for example, a mobile phone, a tablet computer, a notebook computer, a palm computer, a Personal Digital Assistant (PDA), a Portable Media Player (PMP), a navigation device, a wearable device, a smart band, a camera, and the like.
By adopting the radio frequency circuit, the switch module is additionally arranged, the switch module is controlled to be in different opening and closing states, the first power amplifier can be connected to the matched power supply module when being used for different communication connections, the radio frequency circuit is not required to be additionally provided with the power supply module, the ready-made power supply module is reused, the configuration of the power supply module is saved, and the production cost is controlled.
The technical solutions described in the embodiments of the present application can be arbitrarily combined without conflict.
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 a unit is only one logical function division, and there may be other division ways in actual implementation, such as: multiple units or components may be combined, or may be integrated into another system, or some features may be omitted, or not implemented. In addition, the coupling, direct coupling or communication connection between the components shown or discussed may be through some interfaces, and the indirect coupling or communication connection between the devices or units may be electrical, mechanical or other forms.
The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, that is, may be located in one place, or may be distributed on a plurality of network units; some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.
In addition, all functional units in the embodiments of the present application may be integrated into one processing unit, or each unit may be separately regarded as one unit, or two or more units may be integrated into one unit; the integrated unit can be realized in a form of hardware, or in a form of hardware plus a software functional unit.
The above description is only for the specific embodiments of the present application, but the scope of the present application is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present application, and shall be covered by the scope of the present application.
Claims (15)
1. A radio frequency circuit, characterized in that 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; wherein the content of the first and second substances,
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 supply module is conducted with the communication path of the first power amplifier to provide power for a first communication connection supported by the first power amplifier;
when the switch module is in a second open-close state, the second power supply module is conducted with the communication path of the first power amplifier to provide power for a 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;
two ends of the first switch are respectively connected with the power supply output end of the first power supply module and the power supply input end of the first power amplifier;
two ends of the second switch are respectively connected with the power supply output end of the second power supply module and the power supply input end of the first power amplifier;
the first switch is in a closed state, and the second switch is in an open state;
the second on-off state is that the first switch is in an off state, and the second switch is in an on state.
3. The radio frequency circuit according to claim 1, further comprising a third power amplifier, wherein the third power amplifier is connected to the first power module;
the third power amplifier is configured to support a first communication connection in a third communication band.
4. The radio frequency circuit according to claim 1 or 3, further comprising a fourth power amplifier, wherein the fourth power amplifier is 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 used for supporting first communication connection of a fourth communication frequency band;
the second sub power amplifier is connected with the second power module, and the second sub power amplifier is used for supporting second communication connection of a fifth communication frequency band.
5. The radio frequency circuit of claim 1, wherein 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 so as to gate the power amplifier to be in a working state.
6. The radio frequency circuit of claim 1,
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 configured to support a first communication connection in a second communication band;
when the switch module is in a first opening and closing state, the second power supply module is conducted with the communication path of the second power amplifier;
when the switch module is in a second opening and closing state, the first power supply module is conducted with the communication path of the second power amplifier.
7. The RF circuit of claim 6, wherein the switch module comprises a third switch and a fourth switch;
the closed end of the third switch is connected with the power output end of the first power supply module, and the closed 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 open-close state is that the closed end of the third switch is communicated with the first shunt end, and the closed end of the fourth switch is communicated with the second shunt end;
the second open-close state is that the close end of the third switch is communicated with the second shunt end, and the close end of the fourth switch is communicated with the first shunt end.
8. The RF circuit of claim 1, wherein the first power module has an Average Power Tracking (APT) mode, the second power 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.
9. The radio frequency circuit of claim 8, wherein the first communications band comprises a 28 band.
10. A method of controlling a radio frequency circuit, the radio frequency circuit comprising the radio frequency circuit of any one of claims 1-9, the method comprising:
detecting a current communication state;
controlling a switch module to be in a first opening and closing state, so that the first power supply module is conducted with a communication path of the first power amplifier;
and controlling the switch module to be in a second opening and closing state, so that the second power supply module is conducted with the communication path of the first power amplifier.
11. The method of claim 10, wherein the switch module comprises a first switch and a second switch; two ends of the first switch are respectively connected with the power supply output end of the first power supply module and the power supply input end of the first power amplifier; two ends of the second switch are respectively connected with the power supply output end of the second power supply module and the power supply input end of the first power amplifier;
the method comprises the following steps:
controlling the first switch to be in a closed state, and controlling the second switch to be in an open state, so that the communication path between the first power supply module and the first power amplifier is conducted, and the communication path between the second power supply module and the first power amplifier is disconnected;
and controlling the first switch to be in a closed state and the second switch to be in an open state, so that 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.
12. The method of claim 10, wherein the first power module has an Average Power Tracking (APT) mode, wherein the second power module has an Envelope Tracking (ET) mode, wherein the first communication connection is a Long Term Evolution (LTE) connection, and wherein the second communication connection is a new air interface (NR) connection.
13. The method of claim 12, wherein the first communications band comprises a 28 band.
14. A communication device, characterized in that it comprises a radio frequency circuit according to any one of claims 1 to 9.
15. A terminal, characterized in that it comprises a communication device according to claim 14.
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| WO2024114100A1 (en) * | 2022-11-30 | 2024-06-06 | Oppo广东移动通信有限公司 | Radio frequency module, power supply control method, communication device, and readable storage medium |
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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 | Radio frequency circuit, radio frequency chip 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 | Radio frequency circuit, radio frequency chip 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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| WO2024114100A1 (en) * | 2022-11-30 | 2024-06-06 | Oppo广东移动通信有限公司 | Radio frequency module, power supply control method, communication device, and readable storage medium |
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