Radio frequency front-end module, radio frequency front-end system and mobile terminal

Abstract

The invention relates to a radio frequency front-end module, a radio frequency front-end system and a mobile terminal, and the system employs a low-frequency transmitting port of a first link, a first intermediate-frequency transmitting port of the first link, a second intermediate-frequency transmitting port of a second link, and a high-frequency transmitting port of the second link of a radio frequency transceiver, and combines a power compatible device. According to the radio frequency front-end module, three types of dual-transmission links of LB + MB, LB + HB and MB + HB can be realized only by using one radio frequency front-end module, so that the application number of the radio frequency front-end module can be reduced, the deployment cost of a radio frequency transceiving system is further reduced, and the occupied area of a PCB (Printed Circuit Board) can be reduced. Moreover, the radio frequency transceiver system comprises the first power supply module and the second power supply module, so that the situations that only constant voltage can be used for power supply, the power consumption is relatively high and the user experience is seriously influenced due to the use of one power supply module can be avoided, APT / ET mode power supply can be realized, the power consumption is further reduced, and the purpose of prolonging the endurance is achieved.

Description

Technical Field

[0001] The present disclosure relates to the field of communication technology, and in particular to a radio frequency front-end module, a radio frequency front-end system and a mobile terminal. Background Art

[0002] Currently, the implementation schemes of three types of dual transmission links on mobile terminals, namely low frequency band (LB) + medium frequency band (MB), LB + high frequency band (HB) and MB + HB, are usually implemented by using a single RF front-end module (LNA-Power Amplifier Module integrated Duplexer, L-PAMiD) to share the transmission link or two L-PAMiDs. The feasibility and cost of dual transmission link implementation will be affected by the structure of the RF front-end module. Summary of the invention

[0003] The present disclosure provides a radio frequency transceiver system, comprising: A radio frequency transceiver, comprising a low frequency transmission port of a first link, a first intermediate frequency transmission port of the first link, a second intermediate frequency transmission port of a second link, and a high frequency transmission port of a second link; A radio frequency front-end module, comprising a low frequency amplifier, an intermediate frequency amplifier, a high frequency amplifier, a low frequency antenna port, an intermediate frequency antenna port, and a high frequency antenna port, wherein the low frequency amplifier receives a low frequency signal transmitted by the radio frequency transceiver through the low frequency transmission port, the intermediate frequency amplifier receives a first intermediate frequency signal transmitted by the radio frequency transceiver through the first intermediate frequency transmission port or receives a second intermediate frequency signal transmitted by the radio frequency transceiver through the second intermediate frequency transmission port, and the high frequency amplifier receives a high frequency signal transmitted by the radio frequency transceiver through the high frequency transmission port; A low frequency antenna connected to the low frequency antenna port and configured to receive and transmit the amplified low frequency signal; an intermediate frequency antenna, connected to the intermediate frequency antenna port, and configured to receive and transmit the amplified intermediate frequency signal; A high frequency antenna, connected to the high frequency antenna port, configured to receive and transmit the amplified high frequency signal; A first power supply module, comprising a first signal receiving port, a first power supply port and a second power supply port, wherein the first signal receiving port receives a first control signal of the RF transceiver, and the first power supply port is connected to a power receiving port of the low-frequency amplifier; A second power supply module, comprising a second signal receiving port, a third power supply port and a fourth power supply port, wherein the second signal receiving port receives a second control signal of the radio frequency transceiver, and the third power supply port is connected to a power receiving port of the high frequency amplifier; A power compatible device, connected to the second power supply port, the fourth power supply port and the power receiving port of the intermediate frequency amplifier respectively; The first control signal is configured to control the first power supply port or the second power supply port to output an electrical signal, and the second control signal is configured to control the third power supply port or the fourth power supply port to output an electrical signal.

[0004] According to a radio frequency transceiver system provided by the present disclosure, the power compatible device includes: a first switching switch, each first end of the first switching switch is respectively connected to the second power supply port and the fourth power supply port, and the second end is connected to the power receiving port of the intermediate frequency amplifier, and is configured to switch the connection relationship between the second power supply port or the fourth power supply port and the power receiving port of the intermediate frequency amplifier.

[0005] According to a radio frequency transceiver system provided by the present disclosure, the radio frequency front-end module further includes: a second switching switch, wherein each first end of the second switching switch is respectively connected to the first intermediate frequency transmission port and the second intermediate frequency transmission port, and the second end of the second switching switch is connected to the input port of the intermediate frequency amplifier, and is configured to switch the connection relationship between the first intermediate frequency transmission port or the second intermediate frequency transmission port and the input port of the intermediate frequency amplifier.

[0006] According to a radio frequency transceiver system provided by the present disclosure, the radio frequency front-end module further includes: a third switching switch, a fourth switching switch, a plurality of low frequency duplexers, a plurality of intermediate frequency duplexers and a plurality of high frequency duplexers; Each first end of the third switching switch is connected to the multiple low-frequency duplexers and the multiple intermediate-frequency duplexers respectively, and each second end is connected to the low-frequency antenna port and the intermediate-frequency antenna port respectively; the third switching switch is configured to switch the connection relationship between the multiple low-frequency duplexers and the low-frequency antenna port, and to switch the connection relationship between the multiple intermediate-frequency duplexers and the intermediate-frequency antenna port; The first ends of the fourth switching switch are respectively connected to the multiple high-frequency duplexers, and the second ends are respectively connected to the high-frequency antenna port; the fourth switching switch is configured to switch the connection relationship between the multiple high-frequency duplexers and the high-frequency antenna port.

[0007] According to a radio frequency transceiver system provided by the present disclosure, the first power supply module and the second power supply module are both step-up / step-down power supply modules; The second end of the third switch and the second end of the fourth switch are also connected to the RF transceiver respectively, and the RF transceiver is configured to receive the amplified low-frequency signal, the intermediate-frequency signal and the high-frequency signal, and output the first control signal to the first power module based on the output power information of the amplified low-frequency signal or the intermediate-frequency signal, and output the second control signal to the second power module based on the output power information of the amplified intermediate-frequency signal or the high-frequency signal; The first control signal is further configured to control the size of the electrical signal output by the first power supply port or the second power supply port, and the second control signal is further configured to control the size of the electrical signal output by the third power supply port or the fourth power supply port.

[0008] According to a radio frequency transceiver system provided by the present disclosure, the radio frequency front-end module further includes: a first coupler, wherein an input end of the first coupler is connected to the second end of the third switch, a first output end of the first coupler is connected to the RF transceiver, and a second output end of the first coupler is connected to the low-frequency antenna as the low-frequency antenna port; a second coupler, wherein an input end of the second coupler is connected to a second end of the third switch, a first output end of the second coupler is connected to the RF transceiver, and a second output end of the second coupler is connected to the IF antenna as the IF antenna port; A third coupler, wherein the input end of the third coupler is connected to the second end of the fourth switching switch, the first output end of the third coupler is connected to the RF transceiver, and the second output end of the third coupler is connected to the high-frequency antenna as the high-frequency antenna port.

[0009] According to a radio frequency transceiver system provided by the present disclosure, the output power information of the amplified low frequency signal or intermediate frequency signal, and the output power information of the amplified intermediate frequency signal or high frequency signal, both include output average power and / or output transient power.

[0010] According to a radio frequency transceiver system provided by the present disclosure, the radio frequency front-end module further includes: a fifth switching switch, wherein a first end of the fifth switching switch is connected to the output port of the low-frequency amplifier, each second end of the fifth switching switch is respectively connected to each first end of the plurality of low-frequency duplexers, and is configured to switch the connection relationship between the low-frequency amplifier and the plurality of low-frequency duplexers; a sixth switching switch, wherein a first end of the sixth switching switch is connected to the output port of the intermediate frequency amplifier, each second end of the sixth switching switch is respectively connected to each first end of the plurality of intermediate frequency duplexers, and is configured to switch a connection relationship between the intermediate frequency amplifier and the plurality of intermediate frequency duplexers; A seventh switching switch, wherein the first end of the seventh switching switch is connected to the output port of the high-frequency amplifier, and each second end is respectively connected to each first end of the plurality of high-frequency duplexers, and is configured to switch the connection relationship between the high-frequency amplifier and the plurality of high-frequency duplexers.

[0011] According to a radio frequency transceiver system provided by the present disclosure, the radio frequency front-end module further includes: an eighth switch, a plurality of low noise amplifiers and a plurality of receiving ports; The input ports of the plurality of low noise amplifiers are respectively connected to at least one of the first ends of the plurality of low frequency duplexers, the first ends of the plurality of intermediate frequency duplexers, and the first ends of the plurality of high frequency duplexers; The output ports of the plurality of low noise amplifiers are respectively connected to the first ends of the eighth switch, and the second ports of the eighth switch are respectively connected to the plurality of receiving ports; The eighth switch is configured to switch the connection relationship between the plurality of low noise amplifiers and the plurality of receiving ports; The multiple receiving ports are used to connect to the radio frequency transceiver.

[0012] According to a radio frequency transceiver system provided by the present disclosure, the multiple low-frequency duplexers correspond to different multiple low-frequency bands, the multiple intermediate-frequency duplexers correspond to different multiple intermediate-frequency bands, and the multiple high-frequency duplexers correspond to different multiple high-frequency bands.

[0013] The present disclosure also provides a communication device, comprising the above-mentioned radio frequency transceiver system. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the technical solutions in the present disclosure or related technologies, the drawings required for use in the embodiments or related technical descriptions will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present disclosure. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0015] Figure 1 It is a structural diagram of a radio frequency transceiver provided in an embodiment of the present disclosure.

[0016] Figure 2 It is one of the structural schematic diagrams of the radio frequency transceiver system provided in the embodiment of the present disclosure.

[0017] Figure 3 This is the second structural diagram of the radio frequency transceiver system provided in the embodiment of the present disclosure.

[0018] Figure 4This is the third structural diagram of the radio frequency transceiver system provided in the embodiment of the present disclosure.

[0019] Figure 5 This is the fourth structural diagram of the radio frequency transceiver system provided in the embodiment of the present disclosure.

[0020] Figure 6 This is the fifth structural diagram of the radio frequency transceiver system provided in the embodiment of the present disclosure.

[0021] Figure 7 This is the sixth structural diagram of the radio frequency transceiver system provided in the embodiment of the present disclosure.

[0022] Figure 8 This is the seventh structural diagram of the radio frequency transceiver system provided in the embodiment of the present disclosure.

[0023] Fig. 9 It is a schematic diagram of the waveform of the power supply voltage (VCC) output by the first power supply module and the second power supply module provided by the embodiment of the present disclosure in the three power supply modes of Bypass / APT / ET as the output power (RF_OUT) of the amplified signal changes.

[0024] Fig.10 It is a structural diagram of a communication device provided in an embodiment of the present disclosure. DETAILED DESCRIPTION

[0025] In order to make the purpose, technical solutions and advantages of the present disclosure clearer, the technical solutions in the present disclosure will be clearly and completely described below in conjunction with the drawings in the present disclosure. Obviously, the described embodiments are part of the embodiments of the present disclosure, rather than all the embodiments. Based on the embodiments in the present disclosure, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present disclosure.

[0026] Before further describing the embodiments of the present disclosure in detail, the English abbreviations involved in the embodiments of the present disclosure are described as follows: LB (Low Band): Low frequency band, the frequency range can be 703MHz-960MHz.

[0027] MB (Middle Band): Medium frequency band, the frequency range can be 1710MHz-2170MHz.

[0028] HB (High Band): High frequency band, the frequency range can be 2300MHz-2690MHz.

[0029] It should be noted that the frequency band ranges of LB, MB and HB listed above are not fixed, and the ranges can be increased or decreased based on the established frequency band ranges.

[0030] TX chain: transmit link.

[0031] TX0_LB: Low frequency transmit port of the first link.

[0032] TX0_MB: the intermediate frequency transmission port of the first link, that is, the first intermediate frequency transmission port.

[0033] TX0_HB: High frequency transmit port of the first link.

[0034] TX1_LB: Low frequency transmit port of the second link.

[0035] TX1_MB: The intermediate frequency transmission port of the second link, that is, the second intermediate frequency transmission port.

[0036] TX1_HB: High frequency transmit port of the second link.

[0037] PCB (Printed Circuit Board): Printed circuit board.

[0038] APT (Average Power Tracking) mode: Average power tracking technology power supply mode.

[0039] ET (Envelop Track) mode: Envelope tracking technology power supply mode.

[0040] DPD (Digital Pre-Distortion): digital pre-distortion technology.

[0041] Bypass mode: constant voltage power supply mode.

[0042] PA (Power Amplifier): power amplifier.

[0043] LB PA: Low frequency amplifier.

[0044] MB PA: Intermediate frequency amplifier.

[0045] HB PA: high frequency amplifier.

[0046] PAMiD (Power Amplifier Module integrated Duplexer): is an RF front-end module that integrates a power amplifier, coupler, RF switch, filter, duplexer / multiplexer, etc. Among them, the RF switch can include a single-pole multi-throw switch and a multi-pole multi-throw switch.

[0047] L-PAMiD (LNA-Power Amplifier Module integrated Duplexer): is a PAMiD with an integrated low-noise amplifier.

[0048] PAMiF (Power Amplifier Module with Integrated Filter): is a main transmission module that integrates RF power amplifier, RF switch, integrated passive device filter (IPDF) (or general filter), etc.

[0049] L-PAMiF (LNA-Power Amplifier Module with Integrated Filter): is a main transmission module that integrates a low-noise amplifier PAMiF.

[0050] At present, the structure of the RF transceiver in the mobile terminal is as follows Figure 1 As shown, Tx chain 0 is the first link, and Tx chain 1 is the second link. The first link and the second link have the same structure, and are both connected with a quadrature upconverter (Quadratureupconverter) and a digital-to-analog converter (DA). The first link has a low-frequency transmission port (TX0_LB), an intermediate frequency transmission port (TX0_MB), a first high-frequency transmission port (TX0_HB1), and a second high-frequency transmission port (TX0_HB2). The second link has a low-frequency transmission port (TX1_LB), an intermediate frequency transmission port (TX1_MB), and a high-frequency transmission port (TX1_HB).

[0051] One solution to realize dual transmission links of mobile terminals is to use two L-PAMiDs, such as Figure 2 As shown, the RF transceiver system includes a RF transceiver and two L-PAMiDs. The RF transceiver includes a low frequency transmission port (TX0_LB) of the first link, an intermediate frequency transmission port (TX0_MB) of the first link, a high frequency transmission port (TX1_HB) of the second link, and an intermediate frequency transmission port (TX1_MB) of the second link.

[0052] L-PAMiD1 includes a low-frequency amplifier (LB PA) and a medium-frequency amplifier (MB PA), and L-PAMiD2 includes a high-frequency amplifier (HB PA) and a medium-frequency amplifier (MB PA).

[0053] Figure 2In the embodiment, the low frequency transmission port (TX0_LB) of the first link is connected to the input end of the low frequency amplifier (LB PA) in L-PAMiD1, and the intermediate frequency transmission port (TX0_MB) of the first link is connected to the input end of the intermediate frequency amplifier (MB PA) in L-PAMiD1. The power supply port of the step-up / step-down power supply module 1 is respectively connected to the power receiving port of the low frequency amplifier (LB PA) and the intermediate frequency amplifier (MB PA) in L-PAMiD1, and the low frequency amplifier (LB PA) and the intermediate frequency amplifier (MB PA) in L-PAMiD1 are powered by the step-up / step-down power supply module 1.

[0054] Figure 2 In the embodiment, the high frequency transmission port (TX1_HB) of the second link is connected to the input end of the high frequency amplifier (HB PA) in L-PAMiD2, and the intermediate frequency transmission port (TX1_MB) of the second link is connected to the input end of the intermediate frequency amplifier (MB PA) in L-PAMiD2. The power supply port of the step-up / step-down power supply module 2 is respectively connected to the power receiving port of the high frequency amplifier (HB PA) and the intermediate frequency amplifier (MB PA) in L-PAMiD2, and the high frequency amplifier (HBPA) and the intermediate frequency amplifier (MB PA) in L-PAMiD2 are powered by the step-up / step-down power supply module 2.

[0055] Figure 2 In the solution, by using L-PAMiD1 and L-PAMiD2, although it can avoid the situation that a single L-PAMiD shares Txchain 0 / Tx chain 1 and cannot realize the dual-transmit link scenario of LB+MB, it can also avoid the situation that the LB PA and MB PA in a single L-PAMiD share the boost / buck power supply module 1 and cannot realize the APT / ET mode of LB and MB. If a constant voltage is used for power supply, the power consumption is large, which seriously affects the user experience. However, the feasibility and cost of the dual-transmit link implementation of this solution will be affected by the structure of the RF front-end module, which will not only increase the occupied area of ​​PCB, but also increase the use cost of the RF front-end module.

[0056] Another solution for implementing dual transmission links of mobile terminals is to use a single L-PAMiD to share the transmission link, such as Figure 3 As shown, the radio frequency transceiver system includes a radio frequency transceiver and an L-PAMiD.

[0057] The RF transceiver includes a low frequency transmission port (TX0_LB) of the first link, an intermediate frequency transmission port (TX0_MB) of the first link, and a high frequency transmission port (TX1_HB) of the second link. The L-PAMiD includes a low frequency amplifier (LB PA), an intermediate frequency amplifier (MB PA), and a high frequency amplifier (HB PA).

[0058] Figure 3 In the embodiment, the low frequency transmission port (TX0_LB) of the first link is connected to the input end of the low frequency amplifier (LB PA) in the L-PAMiD, the intermediate frequency transmission port (TX0_MB) of the first link is connected to the input end of the intermediate frequency amplifier (MB PA) in the L-PAMiD, and the high frequency transmission port (TX1_HB) of the second link is connected to the input end of the high frequency amplifier (HB PA) in the L-PAMiD.

[0059] Figure 3 In the embodiment, the power supply port of the step-up / step-down power supply module 1 is respectively connected to the power receiving port of the low frequency amplifier (LB PA) and the intermediate frequency amplifier (MB PA) in the L-PAMiD, and the low frequency amplifier (LB PA) and the intermediate frequency amplifier (MB PA) in the L-PAMiD are powered through the step-up / step-down power supply module 1. The power supply port of the step-up / step-down power supply module 2 is connected to the power receiving port of the high frequency amplifier (HB PA) in the L-PAMiD, and the high frequency amplifier (HB PA) in the L-PAMiD is powered through the step-up / step-down power supply module 2.

[0060] Since the low-frequency transmission port (TX0_LB) and the intermediate-frequency transmission port (TX0_MB) of the first link belong to the first link (Tx chain 0), and since the first link (Tx chain 0) can only transmit one signal at the same time, it is impossible to transmit two signals of the low-frequency transmission port (TX0_LB) and the intermediate-frequency transmission port (TX0_MB) of the first link at the same time. Figure 3 Compared to Figure 2 ,Although the number of L-PAMiDs can be reduced, the dual transmission link scenario of the low frequency band (LB) and the mid frequency band (MB) cannot be ,realized.

[0061] like Figure 4 As shown, Figure 3 The difference is that the RF transceiver includes a low frequency transmission port (TX0_LB) of the first link, an intermediate frequency transmission port (TX1_MB) of the second link, and a high frequency transmission port (TX1_HB) of the second link. The intermediate frequency transmission port (TX1_MB) of the second link is connected to the input end of the intermediate frequency amplifier (MB PA) in the L-PAMiD. Figure 4The solution can realize two transmission links of the first link (Tx chain 0) and the second link (Tx chain 1), but because the low-frequency amplifier (LB PA) and the intermediate-frequency amplifier (MB PA) in the L-PAMiD share the step-up / step-down power supply module 1, the APT / ET mode of the low-frequency band (LB) and the intermediate-frequency band (MB) cannot be realized. If a constant voltage is used to power the low-frequency amplifier and / or the intermediate-frequency amplifier separately, power consumption is generated even when the low-frequency signal and / or the high-frequency signal is not transmitted.

[0062] Based on this, an embodiment of the present disclosure provides a radio frequency transceiver system.

[0063] Figure 5 A schematic diagram of the structure of a radio frequency transceiver system provided in an embodiment of the present disclosure is shown in FIG. Figure 5 As shown, the radio frequency transceiver system includes: The radio frequency transceiver 1 comprises a low frequency transmission port (TX0_LB) 11 of a first link, a first intermediate frequency transmission port (TX0_MB) 12 of a first link, a second intermediate frequency transmission port (TX1_MB) 13 of a second link and a high frequency transmission port (TX1_HB) 14 of a second connection.

[0064] A radio frequency front-end module 2 includes a low frequency amplifier (LB PA) 21, an intermediate frequency amplifier (MB PA) 22, a high frequency amplifier (HB PA) 23, a low frequency antenna port 24, an intermediate frequency antenna port 25, and a high frequency antenna port 26. The low frequency amplifier (LBPA) 21 receives a low frequency signal transmitted by the radio frequency transceiver 1 through a low frequency transmission port (TX0_LB) 11, the intermediate frequency amplifier (MBPA) 22 receives a first intermediate frequency signal transmitted by a first intermediate frequency transmission port (TX0_MB) 12 or receives a second intermediate frequency signal transmitted by a second intermediate frequency transmission port (TX1_MB) 13, and the high frequency amplifier (HB PA) 23 receives a high frequency signal transmitted by a high frequency transmission port (TX1_HB) 14.

[0065] The low frequency antenna 3 is connected to the low frequency antenna port 24 and is configured to transmit and receive the amplified low frequency signal.

[0066] The intermediate frequency antenna 4 is connected to the intermediate frequency antenna port 25 and is configured to transmit and receive the amplified intermediate frequency signal.

[0067] The high frequency antenna 5 is connected to the high frequency antenna port 26 and is configured to transmit and receive the amplified high frequency signal.

[0068] The first power supply module 6 includes a first signal receiving port, a first power supply port and a second power supply port. The first signal receiving port receives a first control signal of the RF transceiver 1 , and the first power supply port is connected to a power receiving port of a low frequency amplifier (LB PA) 21 .

[0069] The second power supply module 7 includes a second signal receiving port, a third power supply port and a fourth power supply port. The second signal receiving port receives the second control signal of the RF transceiver 1 , and the third power supply port is connected to the power receiving port of the high frequency amplifier (HB PA) 23 .

[0070] The power compatible device 8 is connected to the second power supply port of the first power module 6 , the fourth power supply port of the second power module 7 , and the power receiving port of the intermediate frequency amplifier (MBPA) 22 , respectively.

[0071] The first control signal is configured to control the first power supply port or the second power supply port of the first power supply module 6 to output an electrical signal, and the second control signal is configured to control the third power supply port or the fourth power supply port of the second power supply module 7 to output an electrical signal.

[0072] Specifically, the RF transceiver system provided in the embodiment of the present disclosure includes a RF transceiver 1, a RF front-end module 2, a low-frequency antenna 3, an intermediate-frequency antenna 4, a high-frequency antenna 5, a first power supply module 6, a second power supply module 7 and a power-compatible device 8.

[0073] The RF transceiver 1 transmits a low frequency signal through a low frequency transmission port (TX0_LB) 11 , transmits a first intermediate frequency signal through a first intermediate frequency transmission port (TX0_MB) 12 , transmits a second intermediate frequency signal through a second intermediate frequency transmission port (TX1_MB) 13 , and transmits a high frequency signal through a high frequency transmission port (TX1_HB) 14 .

[0074] The RF front-end module 2 may be a PAMiF, an L-PAMiF, a PAMiD or an L-PAMiD, which is not specifically limited here. The RF front-end module 2 may include a low frequency amplifier (LB PA) 21, an intermediate frequency amplifier (MB PA) 22, a high frequency amplifier (HB PA) 23, a low frequency antenna port 24, an intermediate frequency antenna port 25, and a high frequency antenna port 26.

[0075] The low frequency amplifier (LB PA) 21 may be connected to the low frequency transmission port (TX0_LB) 11 of the radio frequency transceiver 1 , and is configured to receive a low frequency signal transmitted by the low frequency transmission port (TX0_LB) 11 and amplify the received low frequency signal.

[0076] The intermediate frequency amplifier (MB PA) 22 can be connected to the first intermediate frequency transmission port (TX0_MB) 12 of the radio frequency transceiver, and is used to receive the first intermediate frequency signal transmitted by the first intermediate frequency transmission port (TX0_MB) 12 and amplify the received first intermediate frequency signal, or the intermediate frequency amplifier (MB PA) 22 can also be connected to the second intermediate frequency transmission port (TX1_MB) 13 of the radio frequency transceiver, and is used to receive the second intermediate frequency signal transmitted by the second intermediate frequency transmission port (TX1_MB) 13 and amplify the received second intermediate frequency signal. The intermediate frequency amplifier (MB PA) 22 can also be connected to the first intermediate frequency transmission port (TX0_MB) 12 and the second intermediate frequency transmission port (TX1_MB) 13, and receives and amplifies the signal according to the port selected by the radio frequency transceiver for outputting the intermediate frequency signal. In addition, a switching circuit or a selection circuit may be connected between the intermediate frequency amplifier (MB PA) 22 and the first intermediate frequency transmission port (TX0_MB) 12 and the second intermediate frequency transmission port (TX1_MB) 13 to select the intermediate frequency amplifier (MB PA) 22 to be connected to the first intermediate frequency transmission port (TX0_MB) 12 or the second intermediate frequency transmission port (TX1_MB) 13.

[0077] The high frequency amplifier (HB PA) 23 may be connected to the high frequency transmission port (TX1_HB) 14 of the radio frequency transceiver, and is used to receive the high frequency signal transmitted by the high frequency transmission port (TX1_HB) 14 and amplify the received high frequency signal.

[0078] The low-frequency antenna port 24 can be connected to a low-frequency antenna 3, through which the amplified low-frequency signal can be sent to the outside to achieve the transmission of the low-frequency signal. The low-frequency antenna 3 can also receive the low-frequency signal transmitted from the outside, and send the low-frequency signal to the RF transceiver via the RF front-end module 2 to achieve the reception of the external low-frequency signal.

[0079] The intermediate frequency antenna port 25 can be connected to an intermediate frequency antenna 4, through which the amplified intermediate frequency signal can be sent to the outside to achieve the transmission of the intermediate frequency signal. The intermediate frequency antenna 4 can also receive an intermediate frequency signal transmitted from the outside, and send the intermediate frequency signal to the RF transceiver via the RF front-end module 2 to achieve the reception of the external intermediate frequency signal.

[0080] The high-frequency antenna port 26 can be connected to a high-frequency antenna 5, through which the amplified high-frequency signal can be sent to the outside to achieve the transmission of the high-frequency signal. The high-frequency antenna 5 can also receive the high-frequency signal transmitted from the outside, and send the high-frequency signal to the RF transceiver via the RF front-end module 2 to achieve the reception of the external high-frequency signal.

[0081] The first signal receiving port of the first power supply module 6 is connected to the first control terminal of the RF transceiver 1, the first power supply port is connected to the power receiving port of the low frequency amplifier (LB PA) 21, and the second power supply port is connected to the power compatible device 8. The first power supply module 6 can receive the first control signal of the RF transceiver 1 through the first signal receiving port, and can control the output of the electrical signal through the first power supply port or the second power supply port according to the first control signal. If the electrical signal is output through the first power supply port, the electrical signal is used to power the low frequency amplifier (LB PA) 21, and if the electrical signal is output through the second power supply port, the electrical signal is used to access the power compatible device 8.

[0082] The second signal receiving port of the second power supply module 7 is connected to the second control terminal of the RF transceiver 1, the third power supply port is connected to the power receiving port of the high frequency amplifier (HB PA) 23, and the fourth power supply port is connected to the power compatible device 8. The second power supply module 7 can receive the second control signal of the RF transceiver through the second signal receiving port, and can control the output of the electrical signal through the third power supply port or the fourth power supply port according to the second control signal. If the electrical signal is output through the third power supply port, the electrical signal is used to power the high frequency amplifier (HB PA) 23, and if the electrical signal is output through the fourth power supply port, the electrical signal is used to connect to the power compatible device 8.

[0083] The input of the power compatible device 8 comes from the first power module 6 or the second power module 7, and the output is used to power the intermediate frequency amplifier (MB PA) 22. It can be understood that the power compatible device 8 can receive the electrical signal output by any power module of the first power module 6 and the second power module 7, and can use the electrical signal as the output to power the intermediate frequency amplifier (MB PA) 22. Here, the power compatible device 8 can be an OR gate circuit or a switching switch, which is not specifically limited here.

[0084] Since only one power supply port of the first power supply module 6 and the second power supply module 7 can output an electrical signal at the same time, if a dual transmission link of a low frequency band (LB) and an intermediate frequency band (MB) is to be realized, the first power supply port of the first power supply module 6 can be controlled to output an electrical signal to power the low frequency amplifier (LB PA) 21, and the fourth power supply port of the second power supply module 7 can be controlled to output an electrical signal to power the intermediate frequency amplifier (MB PA) 22 through the power compatible device 8. At this time, neither the second power supply port nor the third power supply port will output an electrical signal.

[0085] If a dual transmission link of a high frequency band (HB) and an intermediate frequency band (MB) is to be realized, the second power supply port of the first power supply module 6 can be controlled to output an electrical signal to power the intermediate frequency amplifier (MB PA) 22 through the power compatible device 8, and the third power supply port of the second power supply module 7 can be controlled to output an electrical signal to power the high frequency amplifier (HB PA) 23. At this time, neither the first power supply port nor the fourth power supply port will output an electrical signal.

[0086] If a dual transmission link of a high frequency band (HB) and a low frequency band (LB) is to be realized, the first power supply port of the first power supply module 6 can be controlled to output an electrical signal to power the low frequency amplifier (LB PA) 21, and the third power supply port of the second power supply module 7 can be controlled to output an electrical signal to power the high frequency amplifier (HB PA) 23. At this time, neither the second power supply port nor the fourth power supply port will output an electrical signal.

[0087] The radio frequency transceiver system provided in the embodiment of the present disclosure utilizes the low frequency transmission port of the first link of the radio frequency transceiver, the first intermediate frequency transmission port of the first link, the second intermediate frequency transmission port of the second link, and the high frequency transmission port of the second link, and combines with power compatible devices, and only needs to use one radio frequency front-end module to realize three types of dual transmission links, namely, low frequency band and intermediate frequency band, low frequency band and high frequency band, and intermediate frequency band and high frequency band, which can not only reduce the number of applications of radio frequency front-end modules, thereby reducing the deployment cost of the radio frequency transceiver system, but also reduce the occupied area of ​​PCB. Moreover, the radio frequency transceiver system includes a first power module and a second power module, and can also avoid the situation that only constant voltage power supply can be used due to the use of one power module, which consumes a lot of power and seriously affects the user experience. APT / ET mode power supply can be realized, thereby reducing power consumption and achieving the purpose of improving battery life.

[0088] In one embodiment of the present disclosure, the power compatible device 8 includes: a first switching switch, wherein each first end of the first switching switch is respectively connected to the second power supply port and the fourth power supply port, and the second end is connected to the power receiving port of the intermediate frequency amplifier (MB PA) 22, and is configured to switch the connection relationship between the second power supply port or the fourth power supply port and the power receiving port of the intermediate frequency amplifier (MB PA) 22.

[0089] Specifically, the power compatible device 8 may be a first switch, and the first switch may be a single-pole double-throw switch. The first switch may include two first ends and one second end, the first end is a fixed end, and the second end is a movable end. The two first ends of the first switch are respectively connected to the second power supply port and the fourth power supply port, and the second end is connected to the power receiving port of the intermediate frequency amplifier (MB PA) 22. The first switch may be used to switch the connection relationship between the second power supply port or the fourth power supply port and the power receiving port of the intermediate frequency amplifier (MB PA) 22.

[0090] When the second end of the first switch is connected to the first end connected to the second power supply port, the second power supply port is connected to the power receiving port of the intermediate frequency amplifier (MB PA) 22, and the first power supply module 6 outputs an electrical signal through the second power supply port to power the intermediate frequency amplifier (MB PA) 22.

[0091] When the second end of the first switch is connected to the first end connected to the fourth power supply port, the fourth power supply port is connected to the power receiving port of the intermediate frequency amplifier (MB PA) 22, and the second power supply module 7 outputs an electrical signal through the fourth power supply port to power the MB PA.

[0092] In the embodiment of the present disclosure, the function of the power compatible device is realized by the first switching switch, which can simplify the function realization method of the power compatible device and reduce the complexity of its internal structure.

[0093] like Figure 5 As shown, in one embodiment of the present disclosure, the RF front-end module 2 further includes: A second switching switch 27, wherein each first end of the second switching switch 27 is respectively connected to the first intermediate frequency transmission port (TX0_MB) 12 and the second intermediate frequency transmission port (TX1_MB) 13, and a second end of the second switching switch 27 is connected to the input port of the intermediate frequency amplifier (MB PA) 22, and is configured to switch the connection relationship between the first intermediate frequency transmission port (TX0_MB) 12 or the second intermediate frequency transmission port (TX1_MB) 13 and the input port of the intermediate frequency amplifier (MB PA) 22.

[0094] Specifically, the second switch 27 may be a single-pole double-throw switch, and the second switch 27 may include two first ends and one second end, wherein the first end is a fixed end and the second end is a movable end. The two first ends of the second switch are respectively connected to TX0_MB and TX1_MB, and the second end is connected to the input port of the MB PA. The second switch 27 may be used to switch the connection relationship between TX0_MB and TX1_MB and the power receiving port of the MB PA.

[0095] When the second end of the second switch 27 is connected to the first end connected to TX0_MB, TX0_MB is connected to the input port of the MB PA, and TX0_MB outputs the first intermediate frequency signal to the MB PA.

[0096] When the second end of the second switch 27 is connected to the first end connected to TX1_MB, TX1_MB is connected to the input port of the MB PA, and TX1_MB outputs the second intermediate frequency signal to the MB PA.

[0097] In the embodiment of the present disclosure, the selection function of the intermediate frequency signal received by the MB PA is implemented by the second switching switch, which can simplify the implementation scheme of the selection function of the intermediate frequency signal and reduce the complexity of the implementation scheme.

[0098] like Figure 6 As shown, in one embodiment of the present disclosure, the RF front-end module 2 further includes: a third switching switch 28, a fourth switching switch 29, a plurality of low-frequency duplexers, a plurality of intermediate-frequency duplexers, and a plurality of high-frequency duplexers.

[0099] The first ends of the third switching switch 28 are respectively connected to multiple low-frequency duplexers and multiple intermediate-frequency duplexers, and the second ends are respectively connected to the low-frequency antenna port 24 and the intermediate-frequency antenna port 25; the third switching switch 28 is configured to switch the connection relationship between multiple low-frequency duplexers and the low-frequency antenna port 24, and to switch the connection relationship between multiple intermediate-frequency duplexers and the intermediate-frequency antenna port 25.

[0100] The first ends of the fourth switching switch 29 are respectively connected to multiple high-frequency duplexers, and the second ends are respectively connected to the high-frequency antenna port 26; the fourth switching switch 29 is configured to switch the connection relationship between the multiple high-frequency duplexers and the high-frequency antenna port 26.

[0101] Specifically, the RF front-end module 2 may include multiple low-frequency duplexers, multiple intermediate-frequency duplexers, and multiple high-frequency duplexers. The number of low-frequency duplexers, intermediate-frequency duplexers, and high-frequency duplexers may be set as needed and is not specifically limited here.

[0102] The number of low-frequency duplexers can be determined according to the number of low-frequency bands into which the low-frequency signal is divided. If the number of low-frequency bands is three, namely, low-frequency band 1, low-frequency band 2, and low-frequency band 3, then the number of low-frequency duplexers is also three, namely, the first low-frequency duplexer 210, the second low-frequency duplexer 211, and the third low-frequency duplexer 212.

[0103] The number of IF duplexers can be determined according to the number of IF bands into which the IF signal is divided. If the number of IF bands is three, namely, IF band 1, IF band 2, and IF band 3, then the number of IF duplexers is also three, namely, the first IF duplexer 213, the second IF duplexer 214, and the third IF duplexer 215.

[0104] The number of high-frequency duplexers can be determined according to the number of high-frequency frequency bands into which the high-frequency signal is divided. If the number of high-frequency frequency bands is three, namely, high-frequency band 1, high-frequency band 2, and high-frequency band 3, then the number of high-frequency duplexers is also three, namely, the first high-frequency duplexer 216, the second high-frequency duplexer 217, and the third high-frequency duplexer 218.

[0105] The third switch 28 and the fourth switch 29 can both be single-pole multi-throw switches. The third switch 28 can include six first ends and two second ends, the first end is a fixed end, and the second end is a movable end. The three first ends correspond to one second end. The three first ends of the third switch 28 can be connected to three low-frequency duplexers respectively, and the other three first ends can be connected to three intermediate frequency duplexers respectively. One second end of the third switch 28 is connected to the low-frequency antenna port, and the other second end is connected to the intermediate frequency antenna port.

[0106] The third switching switch 28 can switch the connection relationship between the first low-frequency duplexer 210, the second low-frequency duplexer 211 and the third low-frequency duplexer 212 and the low-frequency antenna port 24 according to whether the three first ends and one second end are connected, and can switch the connection relationship between the first intermediate frequency duplexer 213, the second intermediate frequency duplexer 214 and the third intermediate frequency duplexer 215 and the intermediate frequency antenna port 25 according to whether the other three first ends and another second end are connected.

[0107] When the second end of the third switching switch 28 connected to the low-frequency antenna port 24 is connected to the first end connected to a low-frequency duplexer, the low-frequency antenna port 24 is connected to the low-frequency duplexer, and the low-frequency duplexer separates the low-frequency signal of the corresponding low-frequency band received from the outside and the low-frequency signal of the corresponding low-frequency band amplified by the low-frequency amplifier (LB PA) 21, thereby realizing the synchronous transmission and reception of the low-frequency signal of the corresponding low-frequency band.

[0108] When the second end of the third switching switch 28 connected to the intermediate frequency antenna port 25 is connected to the first end connected to a certain intermediate frequency duplexer, the intermediate frequency antenna port 25 is connected to the intermediate frequency duplexer, and the intermediate frequency duplexer separates the intermediate frequency signal of the corresponding intermediate frequency band received from the outside and the intermediate frequency signal of the corresponding intermediate frequency band amplified by the intermediate frequency amplifier (MB PA) 22, thereby realizing the synchronous transmission and reception of the intermediate frequency signal of the corresponding intermediate frequency band.

[0109] When the second end of the fourth switching switch 29 connected to the high-frequency antenna port 26 is connected to the first end connected to a high-frequency duplexer, the high-frequency antenna port 26 is connected to the high-frequency duplexer, and the high-frequency duplexer separates the high-frequency signal of the corresponding high-frequency band received from the outside and the high-frequency signal of the corresponding high-frequency band amplified by the high-frequency amplifier (HB PA) 23, thereby realizing the synchronous transmission and reception of the high-frequency signal of the corresponding high-frequency band.

[0110] In the embodiment of the present disclosure, by combining a third switching switch, a fourth switching switch, multiple low-frequency duplexers, multiple intermediate-frequency duplexers, and multiple high-frequency duplexers, the RF front-end module can have the function of synchronously transmitting and receiving any one of low-frequency signals, intermediate-frequency signals, and high-frequency signals.

[0111] In one embodiment of the present disclosure, the first power module 6 and the second power module 7 are both step-up / step-down power modules.

[0112] The second end of the third switching switch 28 and the second end of the fourth switching switch 29 are also respectively connected to the RF transceiver 1, which is configured to receive the amplified low-frequency signal, intermediate-frequency signal and high-frequency signal, and output the first control signal to the first power supply module 6 based on the output power information of the amplified low-frequency signal or intermediate-frequency signal, and output the second control signal to the second power supply module 7 based on the output power information of the amplified intermediate-frequency signal or high-frequency signal.

[0113] The first control signal is further configured to control the size of the electrical signal output by the first power supply port or the second power supply port, and the second control signal is further configured to control the size of the electrical signal output by the third power supply port or the fourth power supply port.

[0114] Specifically, the first power module 6 and the second power module 7 are both step-up / step-down power modules. The implementation principle of the step-up / step-down power module is based on power electronics technology and control theory, and the input voltage is increased or decreased through the coordinated work of switching elements, energy storage elements and voltage conversion circuits.

[0115] The second end of the third switch 28 is connected not only to the low frequency antenna port 24 and the intermediate frequency antenna port 25 , but also to the RF transceiver 1 , and is used to feed back the amplified low frequency signal and intermediate frequency signal to the RF transceiver 1 .

[0116] The second end of the fourth switch 29 is not only connected to the high-frequency antenna port 26 , but also connected to the radio frequency transceiver 1 , and is used to feed back the amplified high-frequency signal to the radio frequency transceiver 1 .

[0117] If a dual transmission link of a low frequency band (LB) and an intermediate frequency band (MB) is implemented, the low frequency amplifier (LB PA) 21 is powered by the first power supply port of the first power supply module 6, and the intermediate frequency amplifier (MB PA) 22 is powered by the electrical signal transmitted by the fourth power supply port of the second power supply module 7 via the power compatible device 8, then the RF transceiver 1 receives the amplified low frequency signal and the intermediate frequency signal, and can use the output power information of the amplified low frequency signal and the intermediate frequency signal to output a first control signal to the first power supply module 6 and a second control signal to the second power supply module 7. Here, the RF transceiver 1 can use the output power information of the amplified low frequency signal to calculate the size of the electrical signal output by the first power supply port of the first power supply module 6, and generate a first control signal according to the size of the electrical signal to control the first power supply port of the first power supply module 6 to output an electrical signal with a size that meets the requirements to power the low frequency amplifier (LB PA) 21. The RF transceiver 1 can use the output power information of the amplified intermediate frequency signal to calculate the size of the electrical signal output by the fourth power supply port of the second power supply module 7, and generate a second control signal according to the size of the electrical signal to control the fourth power supply port of the second power supply module 7 to output an electrical signal with a size that meets the requirements to power the intermediate frequency amplifier (MB PA) 22.

[0118] If a dual transmission link of a high frequency band (HB) and an intermediate frequency band (MB) is implemented, the high frequency amplifier (HB PA) 23 is powered by the third power supply port of the second power supply module 7, and the intermediate frequency amplifier (MB PA) 22 is powered by the electrical signal transmitted by the second power supply port of the first power supply module 6 via the power compatible device 8, then the RF transceiver 1 receives the amplified intermediate frequency signal and high frequency signal, and can use the output power information of the amplified intermediate frequency signal and high frequency signal to output a first control signal to the first power supply module 6 and a second control signal to the second power supply module 7. Here, the RF transceiver 1 can use the output power information of the amplified intermediate frequency signal to calculate the size of the electrical signal output by the second power supply port of the first power supply module 6, and generate a first control signal according to the size of the electrical signal to control the second power supply port of the first power supply module 6 to output an electrical signal with a size that meets the requirements to power the intermediate frequency amplifier (MB PA) 22. The RF transceiver 1 can use the output power information of the amplified high-frequency signal to calculate the size of the electrical signal output by the third power supply port of the second power supply module 7, and generate a second control signal according to the size of the electrical signal to control the third power supply port of the second power supply module 7 to output an electrical signal with a size that meets the requirements to power the high-frequency amplifier (HB PA) 23.

[0119] If a dual transmission link of a high frequency band (HB) and a low frequency band (LB) is implemented, the low frequency amplifier (LB PA) 21 is powered by the first power supply port of the first power supply module 6, and the high frequency amplifier (HB PA) 23 is powered by the third power supply port of the second power supply module 7, then the RF transceiver 1 receives the amplified low frequency signal and high frequency signal, and can use the output power information of the amplified low frequency signal and high frequency signal to output a first control signal to the first power supply module 6 and a second control signal to the second power supply module 7. Here, the RF transceiver 1 can use the output power information of the amplified low frequency signal to calculate the size of the electrical signal output by the first power supply port of the first power supply module 6, and generate a first control signal according to the size of the electrical signal to control the first power supply port of the first power supply module 6 to output an electrical signal with a size that meets the requirements to power the low frequency amplifier (LBPA) 21. The RF transceiver 1 can use the output power information of the amplified high-frequency signal to calculate the size of the electrical signal output by the third power supply port of the second power supply module 7, and generate a second control signal according to the size of the electrical signal to control the third power supply port of the second power supply module 7 to output an electrical signal with a size that meets the requirements to power the high-frequency amplifier (HB PA) 23.

[0120] It can be understood that the output power information involved in the present disclosure may include at least one of output average power and output transient power.

[0121] In the disclosed embodiment, by feeding back the output power information of the amplified low-frequency signal, intermediate-frequency signal and high-frequency signal to the RF transceiver, the RF transceiver can generate a first control signal and a second control signal that can control the size of the electrical signals output by the first power module and the second power module, thereby improving the control accuracy of the first power module and the second power module.

[0122] In one embodiment of the present disclosure, the output power information of the amplified low-frequency signal or intermediate-frequency signal, and the output power information of the amplified intermediate-frequency signal or high-frequency signal both include output average power and / or output transient power.

[0123] Specifically, the content included in the output power information can be determined according to the power supply modes of the first power module 6 and the second power module 7. If the first power module 6 and the second power module 7 are powered in APT mode, the output power information can be the output average power; if the first power module 6 and the second power module 7 are powered in ET mode, the output power information can be the output transient power.

[0124] In the embodiment of the present disclosure, output power information is determined by power supply modes of the first power module and the second power module, so that accurate control of the first power module and the second power module can be further achieved.

[0125] like Figure 7 As shown, in one embodiment of the present disclosure, the RF front-end module 2 further includes: A first coupler 219, wherein an input end of the first coupler 219 is connected to a second end of the third switch 28, a first output end of the first coupler 219 is connected to the RF transceiver 1, and a second output end of the first coupler 219 is connected to the low-frequency antenna port 24 and the low-frequency antenna 3; A second coupler 220, wherein an input end of the second coupler 220 is connected to a second end of the third switch 28, a first output end of the second coupler 220 is connected to the RF transceiver 1, and a second output end of the second coupler 220 is connected to the IF antenna port 25 and the IF antenna 4; The third coupler 221, the input end of the third coupler 221 is connected to the second end of the fourth switching switch 29, the first output end of the third coupler 221 is connected to the RF transceiver 1, and the second output end of the third coupler 221 is connected to the high-frequency antenna 5 as the high-frequency antenna port 26.

[0126] Specifically, the RF front-end module 2 also includes a first coupler 219, a second coupler 220 and a third coupler 221. Each of the three couplers may include an input end and two output ends, and two of the amplified low-frequency signal, intermediate-frequency signal and high-frequency signal are fed back to the RF transceiver through the three couplers, so that the RF transceiver 1 can accurately control the electrical signals output by the first power module 6 and the second power module 7.

[0127] like Figure 6 and Figure 7 As shown, in one embodiment of the present disclosure, the RF front-end module 2 further includes: A fifth switch 222, wherein a first end of the fifth switch 222 is connected to an output port of the low-frequency amplifier 21, and each second end of the fifth switch 222 is connected to each first end of the plurality of low-frequency duplexers, respectively, and is configured to switch a connection relationship between the low-frequency amplifier 21 and the plurality of low-frequency duplexers; A sixth switch 223, wherein a first end of the sixth switch 223 is connected to an output port of the intermediate frequency amplifier 22, and each second end is connected to each first end of a plurality of intermediate frequency duplexers, respectively, and is configured to switch a connection relationship between the intermediate frequency amplifier 22 and the plurality of intermediate frequency duplexers; The seventh switching switch 224 has a first end connected to the output port of the high-frequency amplifier 23, and each second end is respectively connected to each first end of a plurality of high-frequency duplexers, and is configured to switch the connection relationship between the high-frequency amplifier 23 and the plurality of high-frequency duplexers.

[0128] Specifically, the fifth switch 222, the sixth switch 223 and the seventh switch 224 may all be single-pole multi-throw switches, and may all include a first end and a plurality of second ends, wherein the first end is a movable end and the second end is a fixed end.

[0129] A first end of the fifth switch 222 is connected to the output port of the low frequency amplifier (LB PA) 21, and three second ends are respectively connected to the low frequency duplexers of the corresponding low frequency bands, so as to switch the connection relationship between the output port of the low frequency amplifier (LB PA) 21 and the low frequency duplexers of each low frequency band.

[0130] A first end of the sixth switch 223 is connected to the output port of the intermediate frequency amplifier (MB PA) 22, and three second ends are respectively connected to the intermediate frequency duplexers of the corresponding intermediate frequency bands, so as to switch the connection relationship between the output port of the intermediate frequency amplifier (MB PA) 22 and the intermediate frequency duplexers of each intermediate frequency band.

[0131] The first end of the seventh switch 224 is connected to the output port of the high frequency amplifier (HB PA) 23, and the three second ends are respectively connected to the high frequency duplexers of the corresponding high frequency bands, so as to switch the connection relationship between the output port of the high frequency amplifier (HB PA) 23 and the high frequency duplexers of each high frequency band.

[0132] In the embodiment of the present disclosure, by setting the fifth switch 222, the sixth switch 223 and the seventh switch 224, signal transmission and reception in different frequency bands can be achieved.

[0133] like Figure 8 As shown, in one embodiment of the present disclosure, the RF front-end module 2 further includes: an eighth switching switch 225, a plurality of low noise amplifiers and a plurality of receiving ports.

[0134] Input ports of the plurality of low noise amplifiers are respectively connected to at least one of the first ends of the plurality of low frequency duplexers, the first ends of the plurality of intermediate frequency duplexers and the first ends of the plurality of high frequency duplexers.

[0135] The output ports of the multiple low noise amplifiers are respectively connected to the first ends of the eighth switch, and the second ports of the eighth switch are respectively connected to the multiple receiving ports.

[0136] The eighth switch 225 is configured to switch the connection relationship between the plurality of low noise amplifiers and the plurality of receiving ports.

[0137] The multiple receiving ports are used to connect to the radio frequency transceiver 1 .

[0138] Specifically, the eighth switch 225 may be a multi-pole multi-throw switch, which may include a plurality of first ends and a plurality of second ends, wherein the first end is a movable end and the second end is a fixed end. The plurality of first ends of the eighth switch 225 are respectively connected to the plurality of receiving ports in a one-to-one correspondence, and the plurality of second ends are respectively connected to the input ports of the plurality of low-noise amplifiers in a one-to-one correspondence. By controlling whether the first ends in the eighth switch 225 are connected to the second ends, the connection relationship between the plurality of low-noise amplifiers and the plurality of receiving ports can be switched.

[0139] The number of low-noise amplifiers in the RF front-end module 2 can be set as needed, for example, it can be three, namely the first low-noise amplifier 226, the second low-noise amplifier 227 and the third low-noise amplifier 228. Each low-noise amplifier can include multiple input ports, which can be connected to the first end of a duplexer respectively, and are used to receive signals of a frequency band.

[0140] For example, the first low noise amplifier 226 may have four input ports, which are used to receive external signals of frequency band 1, frequency band 2, frequency band 3 and frequency band 4 respectively; the second low noise amplifier 227 may have four input ports, which are used to receive external signals of frequency band 5, frequency band 6, frequency band 7 and frequency band 8 respectively; the third low noise amplifier 228 may have four input ports, which are used to receive external signals of frequency band 9, frequency band 10, frequency band 11 and frequency band 12 respectively.

[0141] Each low noise amplifier can be used to amplify the received external signal, and can transmit the amplified external signal to the radio frequency transceiver 1 through each receiving port connected to the output port, so as to achieve the reception of the external signal.

[0142] In one embodiment of the present disclosure, a plurality of low-frequency duplexers correspond to different low-frequency bands, a plurality of intermediate-frequency duplexers correspond to different intermediate-frequency bands, and a plurality of high-frequency duplexers correspond to different high-frequency bands. In this way, synchronous transmission and reception of signals in each frequency band can be achieved.

[0143] Fig. 9 The figure is a schematic diagram showing the waveform of the power supply voltage (VCC) output by the first power supply module and the second power supply module in the three power supply modes of Bypass / APT / ET, as the output power (RF_OUT) of the amplified signal changes. Fig. 9As shown, in Bypass mode, both the first power module 6 and the second power module 7 output a DC voltage, which does not change with the change of the output power of the amplified signal. In APT mode, the output voltage of the first power module 6 and the second power module 7 is adjusted according to the output average power of the amplified signal, and in ET mode, the output voltage of the first power module 6 and the second power module 7 is adjusted according to the output transient power of the amplified signal.

[0144] The first power module 6 and the second power module 7 use the APT / ET mode power supply solution, which can reduce power consumption and improve battery life compared to the Bypass mode power supply solution.

[0145] In particular, the DPD technology can be combined in the ET mode to achieve mdB compression by reducing the distortion generated when the power amplifier operates in its nonlinear region, which can greatly improve the efficiency of the power amplifier and compensate for the nonlinear distortion of the power amplifier.

[0146] like Fig.10 As shown, in one embodiment of the present disclosure, a communication device 100 is further provided, and the communication device 100 includes the radio frequency transceiver system 101 provided in the above embodiments. The communication device 100 may be a mobile terminal, such as a smart phone, a tablet computer, etc. By configuring the radio frequency transceiver system 101 in the communication device 100, the cost of implementing a dual transmission link of the communication device can be reduced, and the occupied area of ​​the PCB in the communication device can be reduced, thereby helping to reduce the size of the communication device, reduce the power consumption of the communication device, and improve the endurance of the communication device.

[0147] The device embodiments described above are merely illustrative, wherein the units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, they may be located in one place, or they may be distributed on multiple network units. Some or all of the modules may be selected according to actual needs to achieve the purpose of the scheme of this embodiment. Those of ordinary skill in the art may understand and implement it without creative effort.

[0148] Through the description of the above implementation methods, those skilled in the art can clearly understand that each implementation method can be implemented by means of software plus a necessary general hardware platform, and of course, can also be implemented by hardware. Based on this understanding, the above technical solution is essentially or the part that contributes to the relevant technology can be embodied in the form of a software product, and the computer software product can be stored in a computer-readable storage medium, such as ROM / RAM, a disk, an optical disk, etc., including a number of instructions for a computer device (which can be a personal computer, a server, or a network device, etc.) to execute the methods described in each embodiment or some parts of the embodiment.

[0149] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present disclosure, rather than to limit them. Although the present disclosure has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present disclosure.

Claims

1. A radio frequency transceiver system, comprising: A radio frequency transceiver, comprising a low frequency transmission port of a first link, a first intermediate frequency transmission port of the first link, a second intermediate frequency transmission port of a second link, and a high frequency transmission port of a second link; A radio frequency front-end module, comprising a low frequency amplifier, an intermediate frequency amplifier, a high frequency amplifier, a low frequency antenna port, an intermediate frequency antenna port, and a high frequency antenna port, wherein the low frequency amplifier receives a low frequency signal transmitted by the radio frequency transceiver through the low frequency transmission port, the intermediate frequency amplifier receives a first intermediate frequency signal transmitted by the radio frequency transceiver through the first intermediate frequency transmission port or receives a second intermediate frequency signal transmitted by the radio frequency transceiver through the second intermediate frequency transmission port, and the high frequency amplifier receives a high frequency signal transmitted by the radio frequency transceiver through the high frequency transmission port; A low frequency antenna, connected to the low frequency antenna port, configured to receive and transmit the amplified low frequency signal; an intermediate frequency antenna, connected to the intermediate frequency antenna port, and configured to receive and transmit the amplified intermediate frequency signal; A high frequency antenna connected to the high frequency antenna port and configured to receive and transmit the amplified high frequency signal; A first power supply module, comprising a first signal receiving port, a first power supply port and a second power supply port, wherein the first signal receiving port receives a first control signal of the RF transceiver, and the first power supply port is connected to a power receiving port of the low-frequency amplifier; A second power supply module, comprising a second signal receiving port, a third power supply port and a fourth power supply port, wherein the second signal receiving port receives a second control signal of the radio frequency transceiver, and the third power supply port is connected to a power receiving port of the high frequency amplifier; A power compatible device, connected to the second power supply port, the fourth power supply port and the power receiving port of the intermediate frequency amplifier respectively; The first control signal is configured to control the first power supply port or the second power supply port to output an electrical signal, and the second control signal is configured to control the third power supply port or the fourth power supply port to output an electrical signal.

2. The radio frequency transceiver system according to claim 1, wherein the power compatible device comprises: A first switching switch, wherein each first end of the first switching switch is respectively connected to the second power supply port and the fourth power supply port, and the second end is connected to the power receiving port of the intermediate frequency amplifier, and is configured to switch the connection relationship between the second power supply port or the fourth power supply port and the power receiving port of the intermediate frequency amplifier.

3. The RF transceiver system according to claim 1, wherein the RF front-end module further comprises: a second switching switch, wherein each first end of the second switching switch is respectively connected to the first intermediate frequency transmission port and the second intermediate frequency transmission port, and the second end of the second switching switch is connected to the input port of the intermediate frequency amplifier, and is configured to switch the connection relationship between the first intermediate frequency transmission port or the second intermediate frequency transmission port and the input port of the intermediate frequency amplifier.

4. The RF transceiver system according to any one of claims 1 to 3, wherein the RF front-end module further comprises: A third switching switch, a fourth switching switch, a plurality of low-frequency duplexers, a plurality of medium-frequency duplexers, and a plurality of high-frequency duplexers; Each first end of the third switching switch is connected to the multiple low-frequency duplexers and the multiple intermediate-frequency duplexers respectively, and each second end is connected to the low-frequency antenna port and the intermediate-frequency antenna port respectively; the third switching switch is configured to switch the connection relationship between the multiple low-frequency duplexers and the low-frequency antenna port, and to switch the connection relationship between the multiple intermediate-frequency duplexers and the intermediate-frequency antenna port; The first ends of the fourth switching switch are respectively connected to the multiple high-frequency duplexers, and the second ends are respectively connected to the high-frequency antenna port; the fourth switching switch is configured to switch the connection relationship between the multiple high-frequency duplexers and the high-frequency antenna port.

5. The radio frequency transceiver system according to claim 4, wherein the first power supply module and the second power supply module are both step-up / step-down power supply modules; The second end of the third switch and the second end of the fourth switch are also connected to the RF transceiver respectively, and the RF transceiver is configured to receive the amplified low-frequency signal, the intermediate-frequency signal and the high-frequency signal, and output the first control signal to the first power module based on the output power information of the amplified low-frequency signal or the intermediate-frequency signal, and output the second control signal to the second power module based on the output power information of the amplified intermediate-frequency signal or the high-frequency signal; The first control signal is further configured to control the size of the electrical signal output by the first power supply port or the second power supply port, and the second control signal is further configured to control the size of the electrical signal output by the third power supply port or the fourth power supply port.

6. The RF transceiver system according to claim 5, wherein the RF front-end module further comprises: a first coupler, wherein an input end of the first coupler is connected to the second end of the third switch, a first output end of the first coupler is connected to the RF transceiver, and a second output end of the first coupler is connected to the low-frequency antenna as the low-frequency antenna port; a second coupler, wherein an input end of the second coupler is connected to a second end of the third switch, a first output end of the second coupler is connected to the RF transceiver, and a second output end of the second coupler is connected to the IF antenna as the IF antenna port; A third coupler, wherein the input end of the third coupler is connected to the second end of the fourth switching switch, the first output end of the third coupler is connected to the RF transceiver, and the second output end of the third coupler is connected to the high-frequency antenna as the high-frequency antenna port.

7. According to the radio frequency transceiver system of claim 5, the output power information of the amplified low frequency signal or intermediate frequency signal, and the output power information of the amplified intermediate frequency signal or high frequency signal both include output average power and / or output transient power.

8. The RF transceiver system according to claim 4, wherein the RF front-end module further comprises: a fifth switching switch, wherein a first end of the fifth switching switch is connected to the output port of the low-frequency amplifier, each second end of the fifth switching switch is respectively connected to each first end of the plurality of low-frequency duplexers, and is configured to switch the connection relationship between the low-frequency amplifier and the plurality of low-frequency duplexers; a sixth switching switch, wherein a first end of the sixth switching switch is connected to the output port of the intermediate frequency amplifier, each second end of the sixth switching switch is respectively connected to each first end of the plurality of intermediate frequency duplexers, and is configured to switch a connection relationship between the intermediate frequency amplifier and the plurality of intermediate frequency duplexers; A seventh switching switch, wherein the first end of the seventh switching switch is connected to the output port of the high-frequency amplifier, and each second end is respectively connected to each first end of the plurality of high-frequency duplexers, and is configured to switch the connection relationship between the high-frequency amplifier and the plurality of high-frequency duplexers.

9. The RF transceiver system according to claim 4, wherein the RF front-end module further comprises: an eighth switching switch, a plurality of low noise amplifiers, and a plurality of receiving ports; The input ports of the plurality of low noise amplifiers are respectively connected to at least one of the first ends of the plurality of low frequency duplexers, the first ends of the plurality of intermediate frequency duplexers, and the first ends of the plurality of high frequency duplexers; The output ports of the plurality of low noise amplifiers are respectively connected to the first ends of the eighth switch, and the second ports of the eighth switch are respectively connected to the plurality of receiving ports; The eighth switch is configured to switch the connection relationship between the plurality of low noise amplifiers and the plurality of receiving ports; The multiple receiving ports are used to connect to the radio frequency transceiver.

10. The radio frequency transceiver system according to claim 4, wherein the plurality of low frequency duplexers correspond to different plurality of low frequency bands, the plurality of intermediate frequency duplexers correspond to different plurality of intermediate frequency bands, and the plurality of high frequency duplexers correspond to different plurality of high frequency bands.

11. A communication device, comprising the radio frequency transceiver system according to any one of claims 1 to 10.

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