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

Abstract

This disclosure relates to an RF front-end module, an RF front-end system, and a mobile terminal. The RF transceiver system utilizes the low-frequency transmit port of the first link, the first intermediate frequency transmit port of the first link, the second intermediate frequency transmit port of the second link, and the high-frequency transmit port of the second link of the RF transceiver. Combined with power compatible devices, only one RF front-end module is needed to implement three types of dual transmit links: LB+MB, LB+HB, and MB+HB. This not only reduces the number of RF front-end modules required, thereby reducing the deployment cost of the RF transceiver system, but also reduces the PCB footprint. Furthermore, the RF transceiver system includes a first power supply module and a second power supply module, avoiding the situation where using a single power supply module results in constant voltage power supply, high power consumption, and a significant impact on user experience. It can achieve APT / ET mode power supply, thereby reducing power consumption and improving battery life.

Description

Technical Field

[0001] This 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 Technology

[0002] Currently, the implementation schemes for the three types of dual-transmit links on mobile terminals—Low Band (LB) + Medium Band (MB), LB + High Band (HB), and MB + HB—are usually achieved by using a single RF front-end module (LNA - Power Amplifier Module integrated Duplexer, L-PAMiD) to share the transmit link or by using two L-PAMiDs. The feasibility and cost of implementing dual-transmit links are affected by the structure of the RF front-end module. Summary of the Invention

[0003] This disclosure provides a radio frequency transceiver system, including:

[0004] The radio frequency transceiver includes a low-frequency transmit port of the first link, a first intermediate frequency transmit port of the first link, a second intermediate frequency transmit port of the second link, and a high-frequency transmit port of the second link.

[0005] A radio frequency (RF) front-end module includes a low-frequency amplifier, an intermediate-frequency (IF) amplifier, a high-frequency amplifier, and a low-frequency antenna port, an IF antenna port, and a high-frequency antenna port. The low-frequency amplifier receives a low-frequency signal transmitted by the RF transceiver through the low-frequency transmitting port. The IF amplifier receives a first IF signal transmitted by the RF transceiver through the first IF transmitting port or receives a second IF signal transmitted by the RF transceiver through the second IF transmitting port. The high-frequency amplifier receives a high-frequency signal transmitted by the RF transceiver through the high-frequency transmitting port.

[0006] A low-frequency antenna, connected to the low-frequency antenna port, is configured to transmit and receive amplified low-frequency signals.

[0007] An intermediate frequency (IF) antenna, connected to the IF antenna port, is configured to transmit and receive amplified IF signals.

[0008] A high-frequency antenna, connected to the high-frequency antenna port, is configured to transmit and receive amplified high-frequency signals.

[0009] The first power module 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 from the radio frequency transceiver, and the first power supply port is connected to the power receiving port of the low-frequency amplifier.

[0010] The second power supply module 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 radio frequency transceiver, and the third power supply port is connected to the power receiving port of the high frequency amplifier.

[0011] Power compatible devices are connected to the second power supply port, the fourth power supply port, and the power receiving port of the intermediate frequency amplifier, respectively.

[0012] 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.

[0013] According to a radio frequency transceiver system provided in this disclosure, the power compatible device includes: a first switching switch, each first terminal of the first switching switch being connected to a second power supply port and a fourth power supply port respectively, and a second terminal being connected to a 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.

[0014] According to the radio frequency transceiver system provided in this disclosure, the radio frequency front-end module further includes:

[0015] The second switching switch has its first terminals connected to the first intermediate frequency (IF) transmitter port and the second IF transmitter port, respectively, and its second terminal connected to the input port of the IF amplifier. It is configured to switch the connection relationship between the first IF transmitter port or the second IF transmitter port and the input port of the IF amplifier.

[0016] According to the radio frequency transceiver system provided in this disclosure, the radio frequency front-end module further includes: a third switching switch, a fourth switching switch, multiple low-frequency duplexers, multiple intermediate-frequency duplexers, and multiple high-frequency duplexers;

[0017] Each first terminal of the third switching switch is connected to the plurality of low-frequency duplexers and the plurality of intermediate-frequency duplexers, respectively, and each second terminal 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 plurality of low-frequency duplexers and the low-frequency antenna port, and to switch the connection relationship between the plurality of intermediate-frequency duplexers and the intermediate-frequency antenna port;

[0018] Each first terminal of the fourth switching switch is connected to the plurality of high-frequency duplexers, and each second terminal is connected to the high-frequency antenna port; the fourth switching switch is configured to switch the connection relationship between the plurality of high-frequency duplexers and the high-frequency antenna port.

[0019] According to the radio frequency transceiver system provided in this disclosure, both the first power module and the second power module are boost / buck power modules;

[0020] The second terminals of the third switching switch and the fourth switching switch are also respectively connected to the radio frequency transceiver. The radio frequency transceiver is configured to receive amplified low-frequency signals, intermediate-frequency signals and high-frequency signals, and output the first control signal to the first power module based on the output power information of the amplified low-frequency signals or intermediate-frequency signals, and output the second control signal to the second power module based on the output power information of the amplified intermediate-frequency signals or high-frequency signals.

[0021] The first control signal is further configured to control the magnitude of the electrical signal output from the first power supply port or the second power supply port, and the second control signal is further configured to control the magnitude of the electrical signal output from the third power supply port or the fourth power supply port.

[0022] According to the radio frequency transceiver system provided in this disclosure, the radio frequency front-end module further includes:

[0023] A first coupler, the input terminal of the first coupler is connected to the second terminal of the third switching switch, the first output terminal of the first coupler is connected to the radio frequency transceiver, and the second output terminal of the first coupler serves as the low-frequency antenna port and is connected to the low-frequency antenna;

[0024] The second coupler has its input terminal connected to the second terminal of the third switching switch, its first output terminal connected to the radio frequency transceiver, and its second output terminal serving as the intermediate frequency antenna port and connected to the intermediate frequency antenna.

[0025] The third coupler has its input terminal connected to the second terminal of the fourth switching switch, its first output terminal connected to the radio frequency transceiver, and its second output terminal connected to the high-frequency antenna as the high-frequency antenna port.

[0026] According to the radio frequency transceiver system provided in this 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 the average output power and / or the transient output power.

[0027] According to the radio frequency transceiver system provided in this disclosure, the radio frequency front-end module further includes:

[0028] The fifth switching switch has a first end connected to the output port of the low-frequency amplifier, and each second end is respectively connected to the first end of each 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;

[0029] A sixth switching switch, wherein the first end of the sixth switching switch is connected to the output port of the intermediate frequency amplifier, and each second end is respectively connected to the first end of each of the plurality of intermediate frequency duplexers, and is configured to switch the connection relationship between the intermediate frequency amplifier and the plurality of intermediate frequency duplexers;

[0030] 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 of the second ends is respectively connected to the first end of each 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.

[0031] According to a radio frequency transceiver system provided in this disclosure, the radio frequency front-end module further includes: an eighth switching switch, multiple low-noise amplifiers, and multiple receiving ports;

[0032] The input ports of the plurality of low-noise amplifiers are respectively connected to at least one of the first terminals of the plurality of low-frequency duplexers, the plurality of intermediate-frequency duplexers, and the plurality of high-frequency duplexers.

[0033] The output ports of the plurality of low-noise amplifiers are respectively connected to the first terminals of the eighth switching switch, and the second ports of the eighth switching switch are respectively connected to the plurality of receiving ports.

[0034] The eighth switch is configured to switch the connection relationship between the plurality of low-noise amplifiers and the plurality of receiving ports;

[0035] The plurality of receiving ports are used to connect to the radio frequency transceiver.

[0036] According to the radio frequency transceiver system provided in this disclosure, the plurality of low-frequency duplexers correspond to different low-frequency bands, the plurality of intermediate-frequency duplexers correspond to different intermediate-frequency bands, and the plurality of high-frequency duplexers correspond to different high-frequency bands.

[0037] This disclosure also provides a communication device, including the radio frequency transceiver system described above. Attached Figure Description

[0038] To more clearly illustrate the technical solutions in this disclosure or related technologies, the accompanying drawings used in the description of the embodiments or related technologies will be briefly introduced below. Obviously, the accompanying drawings described below are some embodiments of this disclosure. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0039] Figure 1 This is a schematic diagram of the structure of the radio frequency transceiver provided in the embodiments of this disclosure.

[0040] Figure 2 This is one of the structural schematic diagrams of the radio frequency transceiver system provided in the embodiments of this disclosure.

[0041] Figure 3 This is the second schematic diagram of the structure of the radio frequency transceiver system provided in the embodiments of this disclosure.

[0042] Figure 4 This is the third schematic diagram of the structure of the radio frequency transceiver system provided in the embodiments of this disclosure.

[0043] Figure 5 This is the fourth schematic diagram of the structure of the radio frequency transceiver system provided in the embodiments of this disclosure.

[0044] Figure 6 This is the fifth schematic diagram of the radio frequency transceiver system provided in the embodiments of this disclosure.

[0045] Figure 7 This is the sixth schematic diagram of the structure of the radio frequency transceiver system provided in the embodiments of this disclosure.

[0046] Figure 8 This is the seventh schematic diagram of the structure of the radio frequency transceiver system provided in the embodiments of this disclosure.

[0047] Figure 9 This is a schematic diagram showing the change of the power supply voltage (VCC) waveform of the first power supply module and the second power supply module provided in the embodiments of this disclosure under the three power supply modes of Bypass / APT / ET, as the output power (RF_OUT) of the amplified signal changes.

[0048] Figure 10 This is a schematic diagram of the structure of the communication device provided in the embodiments of this disclosure. Detailed Implementation

[0049] To make the objectives, technical solutions, and advantages of this disclosure clearer, the technical solutions of this disclosure will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this disclosure, not all embodiments. Based on the embodiments of this disclosure, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this disclosure.

[0050] Before providing a further detailed description of the embodiments of this disclosure, the English abbreviations involved in the embodiments of this disclosure are explained as follows:

[0051] LB (Low Band): Low frequency band, with a frequency range of 703MHz-960MHz.

[0052] MB (Middle Band): The intermediate frequency band, with a frequency range of 1710MHz-2170MHz.

[0053] HB (High Band): High frequency band, with a frequency range of 2300MHz-2690MHz.

[0054] It should be noted that the frequency ranges of LB, MB, and HB listed above are not fixed and can be adjusted to be larger or smaller based on the established frequency range.

[0055] TX chain: Transmission link.

[0056] TX0_LB: Low-frequency transmit port of the first link.

[0057] TX0_MB: The intermediate frequency (IF) transmission port of the first link, i.e., the first IF transmission port.

[0058] TX0_HB: High-frequency transmission port of the first link.

[0059] TX1_LB: Low-frequency transmission port of the second link.

[0060] TX1_MB: The intermediate frequency (IF) transmission port of the second link, i.e., the second IF transmission port.

[0061] TX1_HB: High-frequency transmission port of the second link.

[0062] PCB (Printed Circuit Board): Printed circuit board.

[0063] APT (Average Power Tracking) mode: Average power tracking technology power supply mode.

[0064] ET (Envelop Track) mode: Envelop Track power supply mode.

[0065] DPD (Digital Pre-Distortion): Digital pre-distortion technology.

[0066] Bypass mode: Constant voltage power supply mode.

[0067] PA (Power Amplifier): Power amplifier.

[0068] LB PA: Low-frequency amplifier.

[0069] MB PA: Intermediate Frequency Amplifier.

[0070] HB PA: High-frequency amplifier.

[0071] PAMiD (Power Amplifier Module integrated Duplexer): This is an RF front-end module that integrates a power amplifier, coupler, RF switch, filter, duplexer / multiplexer, etc. The RF switch can include single-pole multi-throw (SPMD) switches and multi-pole multi-throw (MPMD) switches.

[0072] L-PAMiD (LNA-Power Amplifier Module integrated Duplexer): is a PAMiD that integrates a low-noise amplifier.

[0073] PAMiF (Power Amplifier Module with Integrated Filter): This is a main transmitter module that integrates an RF power amplifier, RF switch, integrated passive device filter (IPDF) (or general filter), etc.

[0074] L-PAMiF (LNA-Power Amplifier Module with Integrated Filter): This is a main transmitter module that integrates a low-noise amplifier into the PAMiF.

[0075] Currently, the structure of radio frequency transceivers in mobile terminals is as follows: Figure 1As shown, Tx chain 0 is the first link, and Tx chain 1 is the second link. The first and second links have the same structure, both connected to a quadrature upconverter 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).

[0076] One implementation scheme for dual-transmission links in mobile terminals is to use two L-PAMiDs, such as... Figure 2 As shown, the radio frequency transceiver system includes a radio frequency transceiver and two L-PAMiDs. The radio frequency transceiver includes a low-frequency transmit port (TX0_LB) for the first link, an intermediate frequency transmit port (TX0_MB) for the first link, a high-frequency transmit port (TX1_HB) for the second link, and an intermediate frequency transmit port (TX1_MB) for the second link.

[0077] The L-PAMiD1 includes a low-frequency amplifier (LB PA) and an intermediate-frequency amplifier (MB PA), while the L-PAMiD2 includes a high-frequency amplifier (HB PA) and an intermediate-frequency amplifier (MB PA).

[0078] Figure 2 In the first link, the low-frequency transmit port (TX0_LB) is connected to the input of the low-frequency amplifier (LB PA) in L-PAMiD1, and the intermediate-frequency transmit port (TX0_MB) of the first link is connected to the input of the intermediate-frequency amplifier (MB PA) in L-PAMiD1. The power supply port of the boost / buck power supply module 1 is connected to the power receiving ports of the low-frequency amplifier (LB PA) and the intermediate-frequency amplifier (MB PA) in L-PAMiD1, respectively, and the boost / buck power supply module 1 supplies power to the low-frequency amplifier (LB PA) and the intermediate-frequency amplifier (MB PA) in L-PAMiD1.

[0079] Figure 2In the second link, the high-frequency transmit port (TX1_HB) is connected to the input of the high-frequency amplifier (HB PA) in L-PAMiD2, and the intermediate-frequency transmit port (TX1_MB) is connected to the input of the intermediate-frequency amplifier (MB PA) in L-PAMiD2. The power supply port of the boost / buck power supply module 2 is connected to the power receiving ports of the high-frequency amplifier (HB PA) and the intermediate-frequency amplifier (MB PA) in L-PAMiD2, respectively, and the boost / buck power supply module 2 supplies power to the high-frequency amplifier (HB PA) and the intermediate-frequency amplifier (MB PA) in L-PAMiD2.

[0080] Figure 2 In this proposed solution, using L-PAMiD1 and L-PAMiD2 avoids the scenario where a single L-PAMiD sharing Txchain 0 / Tx chain 1 cannot achieve a dual-transmit link for LB+MB. It also avoids the situation where a single L-PAMiD's LB PA and MB PA sharing a boost / buck power supply module 1 cannot achieve APT / ET mode for LB and MB. Furthermore, it avoids the issue of high power consumption and a significant impact on user experience if a constant voltage power supply is used. However, the feasibility and cost of this solution regarding dual-transmit link implementation are affected by the structure of the RF front-end module, increasing both the PCB footprint and the cost of using the RF front-end module.

[0081] Another implementation scheme for dual transmission links in 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.

[0082] The RF transceiver includes a low-frequency transmit port (TX0_LB) for the first link, an intermediate-frequency transmit port (TX0_MB) for the first link, and a high-frequency transmit port (TX1_HB) for 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).

[0083] Figure 3 In the first link, the low-frequency transmit port (TX0_LB) is connected to the input of the low-frequency amplifier (LB PA) in the L-PAMiD, the intermediate-frequency transmit port (TX0_MB) of the first link is connected to the input of the intermediate-frequency amplifier (MB PA) in the L-PAMiD, and the high-frequency transmit port (TX1_HB) of the second link is connected to the input of the high-frequency amplifier (HB PA) in the L-PAMiD.

[0084] Figure 3In the L-PAMiD, the power supply port of boost / buck power supply module 1 is connected to the power receiving ports of the low-frequency amplifier (LB PA) and the intermediate-frequency amplifier (MB PA), respectively, thus supplying power to the L-PAMiD. The power supply port of boost / buck power supply module 2 is connected to the power receiving port of the high-frequency amplifier (HB PA) in the L-PAMiD, thus supplying power to the L-PAMiD.

[0085] Since the low-frequency transmit port (TX0_LB) and the intermediate-frequency transmit port (TX0_MB) of the first link both belong to the first link (Tx chain 0), and since the first link (Tx chain 0) can only transmit one signal at a time, it is not possible to transmit both the low-frequency transmit port (TX0_LB) and the intermediate-frequency transmit port (TX0_MB) of the first link simultaneously. Figure 3 Compared to Figure 2 While it can reduce the number of L-PAMiDs, it cannot achieve dual-transmission link scenarios in the low-frequency band (LB) and the mid-frequency band (MB).

[0086] like Figure 4 As shown, with Figure 3 The difference lies in that the RF transceiver includes a low-frequency transmit port (TX0_LB) for the first link, an intermediate frequency (IF) transmit port (TX1_MB) for the second link, and a high-frequency (HF) transmit port (TX1_HB) for the second link. The IF transmit port (TX1_MB) of the second link is connected to the input of the IF amplifier (MB PA) in the L-PAMiD. Figure 4 The proposed solution can achieve two transmission links: the first link (Tx chain 0) and the second link (Tx chain 1). However, since the low-frequency amplifier (LB PA) and the intermediate frequency amplifier (MB PA) in L-PAMiD share the boost / buck power supply module 1, it cannot achieve APT / ET mode for the low-frequency band (LB) and the intermediate frequency band (MB). If a constant voltage is used to power the low-frequency amplifier and / or the intermediate frequency amplifier separately, power consumption will occur even when no low-frequency signal and / or high-frequency signal is transmitted.

[0087] Based on this, the present disclosure provides a radio frequency transceiver system.

[0088] Figure 5 This is a schematic diagram of the structure of a radio frequency transceiver system provided in an embodiment of this disclosure, as shown below. Figure 5 As shown, the radio frequency transceiver system includes:

[0089] The radio frequency transceiver 1 includes a low-frequency transmit port (TX0_LB) 11 of the first link, a first intermediate frequency transmit port (TX0_MB) 12 of the first link, a second intermediate frequency transmit port (TX1_MB) 13 of the second link, and a high-frequency transmit port (TX1_HB) 14 of the second link.

[0090] An RF 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, and a low-frequency antenna port 24, an intermediate-frequency antenna port 25, and a high-frequency antenna port 26. The low-frequency amplifier (LB PA) 21 receives low-frequency signals transmitted by the RF transceiver 1 through the low-frequency transmit port (TX0_LB) 11. The intermediate-frequency amplifier (MB PA) 22 receives a first intermediate-frequency signal transmitted by the first intermediate-frequency transmit port (TX0_MB) 12 or a second intermediate-frequency signal transmitted by the second intermediate-frequency transmit port (TX1_MB) 13. The high-frequency amplifier (HB PA) 23 receives high-frequency signals transmitted by the high-frequency transmit port (TX1_HB) 14.

[0091] Low-frequency antenna 3, connected to low-frequency antenna port 24, is configured to transmit and receive amplified low-frequency signals.

[0092] Intermediate frequency antenna 4 is connected to intermediate frequency antenna port 25 and is configured to transmit and receive the amplified intermediate frequency signal.

[0093] High-frequency antenna 5 is connected to high-frequency antenna port 26 and is configured to transmit and receive amplified high-frequency signals.

[0094] The first power 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 the first control signal of the radio frequency transceiver 1, and the first power supply port is connected to the power receiving port of the low frequency amplifier (LB PA) 21.

[0095] 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 radio frequency transceiver 1, and the third power supply port is connected to the power receiving port of the high frequency amplifier (HB PA) 23.

[0096] 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 (MB PA) 22, respectively.

[0097] The first control signal is configured to control the first power supply port or the second power supply port of the first power 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 module 7 to output an electrical signal.

[0098] Specifically, the radio frequency transceiver system provided in this embodiment includes a radio frequency transceiver 1, a radio frequency 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.

[0099] Radio frequency transceiver 1 transmits low-frequency signals through low-frequency transmit port (TX0_LB) 11, transmits first intermediate frequency signals through first intermediate frequency transmit port (TX0_MB) 12, transmits second intermediate frequency signals through second intermediate frequency transmit port (TX1_MB) 13, and transmits high-frequency signals through high-frequency transmit port (TX1_HB) 14.

[0100] The RF front-end module 2 can be PAMiF, L-PAMiF, PAMiD, or L-PAMiD, without specific limitations. 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, and a low-frequency antenna port 24, an intermediate-frequency antenna port 25, and a high-frequency antenna port 26.

[0101] The low-frequency amplifier (LB PA) 21 can be connected to the low-frequency transmit port (TX0_LB) 11 of the radio frequency transceiver 1 to receive the low-frequency signal transmitted by the low-frequency transmit port (TX0_LB) 11 and amplify the received low-frequency signal.

[0102] The intermediate frequency amplifier (MB PA) 22 can be connected to the first intermediate frequency transmit port (TX0_MB) 12 of the RF transceiver to receive and amplify the first intermediate frequency signal transmitted from the first intermediate frequency transmit port (TX0_MB) 12. Alternatively, the intermediate frequency amplifier (MB PA) 22 can also be connected to the second intermediate frequency transmit port (TX1_MB) 13 of the RF transceiver to receive and amplify the second intermediate frequency signal transmitted from the second intermediate frequency transmit port (TX1_MB) 13. The intermediate frequency amplifier (MB PA) 22 can also be connected to the first intermediate frequency transmit port (TX0_MB) 12 and the second intermediate frequency transmit port (TX1_MB) 13, depending on which port the RF transceiver selects for outputting the intermediate frequency signal, for signal reception and amplification. In addition, a switching circuit or selection circuit can be connected between the intermediate frequency amplifier (MB PA) 22 and the first intermediate frequency transmitting port (TX0_MB) 12 and the second intermediate frequency transmitting port (TX1_MB) 13 to select the intermediate frequency amplifier (MB PA) 22 to be connected to the first intermediate frequency transmitting port (TX0_MB) 12 or the second intermediate frequency transmitting port (TX1_MB) 13.

[0103] The high-frequency amplifier (HB PA) 23 can be connected to the high-frequency transmit port (TX1_HB) 14 of the RF transceiver to receive the high-frequency signal transmitted by the high-frequency transmit port (TX1_HB) 14 and amplify the received high-frequency signal.

[0104] The low-frequency antenna port 24 can be connected to a low-frequency antenna 3, which can transmit amplified low-frequency signals to the outside, thus realizing the transmission of low-frequency signals. The low-frequency antenna 3 can also receive low-frequency signals transmitted from the outside and send the low-frequency signals to the radio frequency transceiver via the radio frequency front-end module 2, thus realizing the reception of external low-frequency signals.

[0105] The intermediate frequency (IF) antenna port 25 can be connected to an IF antenna 4, through which an amplified IF signal can be transmitted to the outside, thus realizing the transmission of IF signals. The IF antenna 4 can also receive externally transmitted IF signals and transmit the IF signals to the radio frequency transceiver via the radio frequency front-end module 2, thus realizing the reception of external IF signals.

[0106] The high-frequency antenna port 26 can be connected to a high-frequency antenna 5, which can transmit amplified high-frequency signals to the outside, thus realizing the transmission of high-frequency signals. The high-frequency antenna 5 can also receive high-frequency signals transmitted from the outside and transmit the high-frequency signals to the radio frequency transceiver via the radio frequency front-end module 2, thus realizing the reception of external high-frequency signals.

[0107] The first signal receiving port of the first power 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 module 6 can receive the first control signal from the RF transceiver 1 through the first signal receiving port, and can control the output of electrical signals through the first power supply port or the second power supply port according to the first control signal. If an electrical signal is output through the first power supply port, the electrical signal is used to power the low-frequency amplifier (LB PA) 21; if an electrical signal is output through the second power supply port, the electrical signal is used to connect to the power compatible device 8.

[0108] 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 electrical signals through the third or 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; 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.

[0109] The power compatible device 8 receives input from either the first power module 6 or the second power module 7, and outputs power to the intermediate frequency amplifier (MB PA) 22. It is understood that the power compatible device 8 can receive electrical signals output from either the first power module 6 or the second power module 7, and can use these signals as outputs to power the intermediate frequency amplifier (MB PA) 22. Here, the power compatible device 8 can be an OR gate or a switching device; no specific limitation is made here.

[0110] 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 any given time, in order to realize the dual transmission link of the low frequency band (LB) and the intermediate frequency band (MB), 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.

[0111] To achieve a dual-transmission link for the high-frequency band (HB) and the intermediate-frequency band (MB), 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.

[0112] To achieve a dual-transmission link for the high-frequency band (HB) and the low-frequency band (LB), 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.

[0113] The RF transceiver system provided in this embodiment utilizes the low-frequency transmit port, the first intermediate frequency (IF) transmit port, the second IF transmit port, and the high-frequency transmit port of the second link of the RF transceiver. Combined with power-compatible devices, it can achieve three types of dual-transmit links—low-frequency and IF bands, low-frequency and high-frequency bands, and IF and high-frequency bands—using only one RF front-end module. This not only reduces the number of RF front-end modules required, thus lowering the deployment cost of the RF transceiver system, but also reduces the PCB footprint. Furthermore, the RF transceiver system includes both a first power module and a second power module, avoiding the situation where using a single power module results in constant voltage power supply, high power consumption, and a significant impact on user experience. It can achieve APT / ET mode power supply, thereby reducing power consumption and improving battery life.

[0114] In one embodiment of this disclosure, the power compatible device 8 includes: a first switching switch, each first terminal of the first switching switch being connected to the second power supply port and the fourth power supply port respectively, and the second terminal being 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.

[0115] Specifically, the power compatible device 8 can be a first switching switch, which can be a single-pole double-throw switch. The first switching switch can include two first terminals and one second terminal, where the first terminal is a stationary terminal and the second terminal is a moving terminal. The two first terminals of the first switching switch are respectively connected to the second power supply port and the fourth power supply port, and the second terminal is connected to the power receiving port of the intermediate frequency amplifier (MB PA) 22. The first switching switch can 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.

[0116] When the second end of the first switching 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.

[0117] When the second end of the first switching 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.

[0118] In this embodiment of the disclosure, the function of the power compatible device is realized by the first switching switch, which can simplify the implementation of the function of the power compatible device and reduce the complexity of its internal structure.

[0119] like Figure 5 As shown, in one embodiment of this disclosure, the radio frequency front-end module 2 further includes:

[0120] The second switching switch 27 has its first terminals connected to the first intermediate frequency (IF) transmitter port (TX0_MB) 12 and the second IF transmitter port (TX1_MB) 13, respectively, and its second terminal connected to the input port of the intermediate frequency amplifier (MB PA) 22. It is configured to switch the connection relationship between the first IF transmitter port (TX0_MB) 12 or the second IF transmitter port (TX1_MB) 13 and the input port of the intermediate frequency amplifier (MB PA) 22.

[0121] Specifically, the second changeover switch 27 can be a single-pole double-throw switch. The second changeover switch 27 can include two first terminals and one second terminal, where the first terminals are stationary and the second terminal is a moving terminal. The two first terminals of the second changeover switch are connected to TX0_MB and TX1_MB respectively, and the second terminal is connected to the input port of MB PA. The second changeover switch 27 can be used to switch the connection relationship between TX0_MB and TX1_MB and the power receiving port of MB PA.

[0122] When the second terminal of the second switch 27 is connected to the first terminal connected to TX0_MB, TX0_MB is connected to the input port of MB PA, and the first intermediate frequency signal is output from TX0_MB to MB PA.

[0123] When the second terminal of the second switching switch 27 is connected to the first terminal connected to TX1_MB, TX1_MB is connected to the input port of MB PA, and the second intermediate frequency signal is output from TX1_MB to MB PA.

[0124] In this embodiment of the disclosure, the selection function of the intermediate frequency signal received by the MB PA is realized by the second switching switch, which can simplify the implementation scheme of the intermediate frequency signal selection function and reduce the complexity of the implementation scheme.

[0125] like Figure 6 As shown, in one embodiment of this disclosure, the radio frequency 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.

[0126] Each first terminal of the third switching switch 28 is connected to a plurality of low-frequency duplexers and a plurality of intermediate-frequency duplexers, and each second terminal is connected to a low-frequency antenna port 24 and an intermediate-frequency antenna port 25, respectively. The third switching switch 28 is configured to switch the connection relationship between the plurality of low-frequency duplexers and the low-frequency antenna port 24, and to switch the connection relationship between the plurality of intermediate-frequency duplexers and the intermediate-frequency antenna port 25.

[0127] Each first terminal of the fourth switching switch 29 is connected to a plurality of high-frequency duplexers, and each second terminal is connected to a high-frequency antenna port 26; the fourth switching switch 29 is configured to switch the connection relationship between the plurality of high-frequency duplexers and the high-frequency antenna port 26.

[0128] 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 can be set as needed, and no specific limit is made here.

[0129] The number of low-frequency duplexers can be determined based on the number of low-frequency bands divided into low-frequency signals. If there are three low-frequency bands, namely low-frequency band 1, low-frequency band 2, and low-frequency band 3, then there are also three low-frequency duplexers, namely the first low-frequency duplexer 210, the second low-frequency duplexer 211, and the third low-frequency duplexer 212.

[0130] The number of intermediate frequency duplexers can be determined based on the number of intermediate frequency bands divided by the intermediate frequency signal. If there are three intermediate frequency bands, namely intermediate frequency band 1, intermediate frequency band 2 and intermediate frequency band 3, then there are also three intermediate frequency duplexers, namely the first intermediate frequency duplexer 213, the second intermediate frequency duplexer 214 and the third intermediate frequency duplexer 215.

[0131] The number of high-frequency duplexers can be determined based on the number of high-frequency bands divided into high-frequency signals. If there are three high-frequency bands, namely high-frequency band 1, high-frequency band 2 and high-frequency band 3, then there are also three high-frequency duplexers, namely the first high-frequency duplexer 216, the second high-frequency duplexer 217 and the third high-frequency duplexer 218.

[0132] Both the third switch 28 and the fourth switch 29 can be single-pole multi-throw switches. The third switch 28 can include six first terminals and two second terminals, where the first terminals are stationary and the second terminals are moving. Three first terminals correspond to one second terminal. The three first terminals of the third switch 28 can be connected to three low-frequency duplexers respectively, and the other three first terminals can be connected to three intermediate-frequency duplexers respectively. One second terminal of the third switch 28 is connected to the low-frequency antenna port, and the other second terminal is connected to the intermediate-frequency antenna port.

[0133] The third switch 28 can switch the connection 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 by whether the three first terminals and one second terminal are connected. It can also switch the connection 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 by whether the other three first terminals and one second terminal are connected.

[0134] When the second end of the third switch 28 connected to the low-frequency antenna port 24 is connected to the first end connected to a certain low-frequency duplexer, the low-frequency antenna port 24 is connected to the low-frequency duplexer. The low-frequency duplexer separates the low-frequency signal of the corresponding low-frequency band received from the outside from 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.

[0135] When the second end of the third switching switch 28, which is connected to the intermediate frequency antenna port 25, is connected to the first end of an intermediate frequency duplexer, the intermediate frequency antenna port 25 is connected to the intermediate frequency duplexer. The intermediate frequency duplexer separates the intermediate frequency signal of the corresponding intermediate frequency band received from the outside from the intermediate frequency signal of the corresponding intermediate frequency band after being 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.

[0136] When the second end of the fourth switch 29 connected to the high-frequency antenna port 26 is connected to the first end connected to a certain high-frequency duplexer, the high-frequency antenna port 26 is connected to the high-frequency duplexer. The high-frequency duplexer separates the high-frequency signal of the corresponding high-frequency band received from the outside from 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.

[0137] In this embodiment of the 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 radio frequency front-end module can have the function of synchronous transmission and reception of any signal among low-frequency signals, intermediate-frequency signals, and high-frequency signals.

[0138] In one embodiment of this disclosure, both the first power module 6 and the second power module 7 are step-up / step-down power modules.

[0139] The second terminals of the third switching switch 28 and the fourth switching switch 29 are also connected to the radio frequency transceiver 1, which is configured to receive amplified low-frequency signals, intermediate-frequency signals and high-frequency signals, and output a first control signal to the first power module 6 based on the output power information of the amplified low-frequency signals or intermediate-frequency signals, and output a second control signal to the second power module 7 based on the output power information of the amplified intermediate-frequency signals or high-frequency signals.

[0140] The first control signal is further configured to control the magnitude of the electrical signal output from the first power supply port or the second power supply port, and the second control signal is further configured to control the magnitude of the electrical signal output from the third power supply port or the fourth power supply port.

[0141] Specifically, both the first power supply module 6 and the second power supply module 7 are boost / buck power supply modules. The implementation principle of the boost / buck power supply module is based on power electronics technology and control theory. Through the coordinated work of switching elements, energy storage elements and voltage conversion circuits, the input voltage is increased or decreased.

[0142] The second end of the third switching switch 28 is connected not only to the low-frequency antenna port 24 and the intermediate-frequency antenna port 25, but also to the radio frequency transceiver 1, and is used to feed back the amplified low-frequency signal and intermediate-frequency signal to the radio frequency transceiver 1.

[0143] The second end of the fourth switching switch 29 is connected not only to the high-frequency antenna port 26, but also to the radio frequency transceiver 1, and is used to feed back the amplified high-frequency signal to the radio frequency transceiver 1.

[0144] If a dual-transmit link is implemented for the low-frequency band (LB) and the intermediate-frequency band (MB), the low-frequency amplifier (LB PA) 21 is powered through the first power supply port of the first power supply module 6, and the intermediate-frequency amplifier (MB PA) 22 is powered through the fourth power supply port of the second power supply module 7 via an electrical signal transmitted through the power compatible device 8. Then, the RF transceiver 1 receives the amplified low-frequency and intermediate-frequency signals and can use the output power information of the amplified low-frequency and intermediate-frequency signals 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 magnitude of the electrical signal output from the first power supply port of the first power supply module 6, and generate the first control signal based on the magnitude of this electrical signal to control the first power supply port of the first power supply module 6 to output an electrical signal of the required magnitude to power the low-frequency amplifier (LB PA) 21. The radio frequency transceiver 1 can use the output power information of the amplified intermediate frequency signal to calculate the magnitude of the electrical signal output from the fourth power supply port of the second power supply module 7, and generate a second control signal based on the magnitude of the electrical signal to control the output of an electrical signal from the fourth power supply port of the second power supply module 7 to supply power to the intermediate frequency amplifier (MB PA) 22.

[0145] To achieve a dual-transmit link for the high-frequency band (HB) and the intermediate-frequency band (MB), the high-frequency amplifier (HB PA) 23 is powered through the third power supply port of the second power supply module 7, and the intermediate-frequency amplifier (MB PA) 22 is powered through the electrical signal transmitted via the power compatible device 8 through the second power supply port of the first power supply module 6. Then, the RF transceiver 1 receives the amplified intermediate-frequency and high-frequency signals and can use the output power information of the amplified intermediate-frequency and high-frequency signals 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 magnitude of the electrical signal output from the second power supply port of the first power supply module 6, and generate the first control signal based on the magnitude of this electrical signal to control the second power supply port of the first power supply module 6 to output an electrical signal of the required magnitude to power the intermediate-frequency amplifier (MB PA) 22. The radio frequency transceiver 1 can use the output power information of the amplified high-frequency signal to calculate the magnitude of the electrical signal output from the third power supply port of the second power module 7, and generate a second control signal based on the magnitude of the electrical signal to control the output of an electrical signal from the third power supply port of the second power module 7 to supply power to the high-frequency amplifier (HB PA) 23.

[0146] If a dual-transmit link is implemented for the high-frequency band (HB) and the low-frequency band (LB), with the low-frequency amplifier (LB PA) 21 powered through the first power supply port of the first power supply module 6 and the high-frequency amplifier (HB PA) 23 powered through the third power supply port of the second power supply module 7, then the RF transceiver 1 receives the amplified low-frequency and high-frequency signals. It can then use the output power information of the amplified low-frequency and high-frequency signals 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 magnitude of the electrical signal output from the first power supply port of the first power supply module 6, and generate the first control signal based on the magnitude of this signal to control the first power supply port of the first power supply module 6 to output an electrical signal of the required magnitude to power the low-frequency amplifier (LB PA) 21. The radio frequency transceiver 1 can use the output power information of the amplified high-frequency signal to calculate the magnitude of the electrical signal output from the third power supply port of the second power module 7, and generate a second control signal based on the magnitude of the electrical signal to control the output of an electrical signal from the third power supply port of the second power module 7 to supply power to the high-frequency amplifier (HB PA) 23.

[0147] It is understood that the output power information involved in this disclosure may include at least one of the output average power and the output transient power.

[0148] In this embodiment of the disclosure, by feeding back the output power information of the amplified low-frequency signal, intermediate-frequency signal and high-frequency signal to the radio frequency transceiver, the radio frequency transceiver can generate a first control signal and a second control signal that can control the magnitude 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.

[0149] In one embodiment of this 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 the average output power and / or the transient output power.

[0150] Specifically, the content of the output power information can be determined based on the power supply mode 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 average output 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 transient output power.

[0151] In this embodiment of the disclosure, the output power information is determined by the power supply mode of the first power module and the second power module, which can further enable accurate control of the first power module and the second power module.

[0152] like Figure 7 As shown, in one embodiment of this disclosure, the radio frequency front-end module 2 further includes:

[0153] The first coupler 219 has its input terminal connected to the second terminal of the third switching switch 28, its first output terminal connected to the radio frequency transceiver 1, and its second output terminal connected to the low-frequency antenna 3 as the low-frequency antenna port 24.

[0154] The second coupler 220 has its input terminal connected to the second terminal of the third switching switch 28, its first output terminal connected to the radio frequency transceiver 1, and its second output terminal connected to the intermediate frequency antenna 4 as the intermediate frequency antenna port 25.

[0155] The third coupler 221 has its input terminal connected to the second terminal of the fourth switching switch 29, its first output terminal connected to the radio frequency transceiver 1, and its second output terminal connected to the high-frequency antenna 5 as the high-frequency antenna port 26.

[0156] 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 can include one input terminal and two output terminals. The three couplers feed back two of the amplified low-frequency signal, intermediate-frequency signal, and high-frequency signal to the RF transceiver, 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.

[0157] like Figure 6 and Figure 7 As shown, in one embodiment of this disclosure, the radio frequency front-end module 2 further includes:

[0158] The fifth switch 222 has its first end connected to the output port of the low-frequency amplifier 21, and its second end connected to the first end of each of the multiple low-frequency duplexers, and is configured to switch the connection relationship between the low-frequency amplifier 21 and the multiple low-frequency duplexers.

[0159] The sixth switching switch 223 has its first end connected to the output port of the intermediate frequency amplifier 22, and each of its second ends connected to the first end of each of the multiple intermediate frequency duplexers, and is configured to switch the connection relationship between the intermediate frequency amplifier 22 and the multiple intermediate frequency duplexers.

[0160] The seventh switch 224 has its first end connected to the output port of the high-frequency amplifier 23, and its second end connected to the first end of each of the multiple high-frequency duplexers, and is configured to switch the connection relationship between the high-frequency amplifier 23 and the multiple high-frequency duplexers.

[0161] Specifically, the fifth switch 222, the sixth switch 223 and the seventh switch 224 can all be single-pole multi-throw switches, and each can include a first terminal and multiple second terminals, where the first terminal is the moving terminal and the second terminal is the stationary terminal.

[0162] The first terminal of the fifth switching switch 222 is connected to the output port of the low-frequency amplifier (LB PA) 21, and the three second terminals 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.

[0163] The first terminal of the sixth switching switch 223 is connected to the output port of the intermediate frequency amplifier (MB PA) 22, and the three second terminals 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.

[0164] The first terminal of the seventh switch 224 is connected to the output port of the high-frequency amplifier (HB PA) 23, and the three second terminals 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.

[0165] In this embodiment of the disclosure, by setting a fifth switching switch 222, a sixth switching switch 223 and a seventh switching switch 224, signal transmission and reception in different frequency bands can be realized.

[0166] like Figure 8 As shown, in one embodiment of this disclosure, the radio frequency front-end module 2 further includes: an eighth switching switch 225, multiple low-noise amplifiers, and multiple receiving ports.

[0167] The input ports of multiple low-noise amplifiers are respectively connected to at least one of the first terminals of multiple low-frequency duplexers, multiple intermediate-frequency duplexers, and multiple high-frequency duplexers.

[0168] The output ports of multiple low-noise amplifiers are respectively connected to the first terminals of the eighth switch, and the second terminals of the eighth switch are respectively connected to multiple receiving ports.

[0169] The eighth switch 225 is configured to switch the connection between multiple low-noise amplifiers and multiple receiver ports.

[0170] Multiple receive ports are used to connect to RF transceiver 1.

[0171] Specifically, the eighth switch 225 can be a multi-pole multi-throw switch, which may include multiple first terminals and multiple second terminals, where the first terminals are moving terminals and the second terminals are stationary terminals. The multiple first terminals of the eighth switch 225 are connected one-to-one with multiple receiving ports, and the multiple second terminals are connected one-to-one with multiple input ports of low-noise amplifiers. By controlling whether each first terminal and each second terminal in the eighth switch 225 is connected, the connection relationship between the multiple low-noise amplifiers and the multiple receiving ports can be switched.

[0172] The number of low-noise amplifiers in the RF front-end module 2 can be set as needed, for example, there 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 have multiple input ports, which can be connected to the first end of a duplexer to receive signals of one frequency band respectively.

[0173] For example, the first low-noise amplifier 226 may have four input ports, which are used to receive external signals from 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 from frequency band 5, frequency band 6, frequency band 7 and frequency band 8 respectively; and the third low-noise amplifier 228 may have four input ports, which are used to receive external signals from frequency band 9, frequency band 10, frequency band 11 and frequency band 12 respectively.

[0174] Each low-noise amplifier can be used to amplify the received external signal, and the amplified external signal can be transmitted to the RF transceiver 1 through the receiving ports connected to the output ports to realize the reception of external signals.

[0175] In one embodiment of this disclosure, multiple low-frequency duplexers correspond to different low-frequency bands, multiple intermediate-frequency duplexers correspond to different intermediate-frequency bands, and multiple high-frequency duplexers correspond to different high-frequency bands. This enables synchronous transmission and reception of signals across different frequency bands.

[0176] Figure 9 This is a schematic diagram showing the waveform of the power supply voltage (VCC) output by the first and second power supply modules under the three power supply modes of Bypass / APT / ET, as a function of the output power (RF_OUT) of the amplified signal. Figure 9As shown, in Bypass mode, both the first power module 6 and the second power module 7 output DC voltage, which does not change with the output power of the amplified signal. In APT mode, the output voltages of the first power module 6 and the second power module 7 are adjusted according to the average output power of the amplified signal. In ET mode, the output voltages of the first power module 6 and the second power module 7 are adjusted according to the transient output power of the amplified signal.

[0177] The first power module 6 and the second power module 7 use an APT / ET mode power supply scheme, which can reduce power consumption and improve battery life compared to the Bypass mode power supply scheme.

[0178] In particular, in ET mode, DPD technology can be combined to reduce the distortion generated by the power amplifier when it is running in its nonlinear region, thereby achieving mdB compression, which can significantly improve the efficiency of the power amplifier and compensate for the nonlinear distortion of the power amplifier.

[0179] like Figure 10 As shown, in one embodiment of this disclosure, a communication device 100 is also provided, which includes the radio frequency transceiver system 101 provided in the above embodiments. The communication device 100 can be a mobile terminal, such as a smartphone or tablet computer. By configuring the radio frequency transceiver system 101 in the communication device 100, the cost of implementing dual transmission links in the communication device can be reduced, the PCB area occupied 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 battery life of the communication device.

[0180] The device embodiments described above are merely illustrative. The units described as separate components may or may not be physically separate. The components shown as units may or may not be physical units; that is, they may be located in one place or distributed across multiple network units. Some or all of the modules can be selected to achieve the purpose of this embodiment according to actual needs. Those skilled in the art can understand and implement this without any creative effort.

[0181] Through the above description of the embodiments, those skilled in the art can clearly understand that each embodiment can be implemented by means of software plus necessary general-purpose hardware platforms, and of course, it can also be implemented by hardware. Based on this understanding, the above technical solutions, in essence or the parts that contribute to the related technology, can be embodied in the form of software products. This computer software product can be stored in a computer-readable storage medium, such as ROM / RAM, magnetic disk, optical disk, etc., and includes several instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) to execute the methods described in the various embodiments or some parts of the embodiments.

[0182] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this disclosure, and are not intended to limit them. Although this disclosure has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this disclosure.

Claims

1. A radio frequency transceiver system, comprising: The radio frequency transceiver includes a low-frequency transmit port of the first link, a first intermediate frequency transmit port of the first link, a second intermediate frequency transmit port of the second link, and a high-frequency transmit port of the second link. A radio frequency (RF) front-end module includes a low-frequency amplifier, an intermediate-frequency (IF) amplifier, a high-frequency amplifier, and a low-frequency antenna port, an IF antenna port, and a high-frequency antenna port. The low-frequency amplifier receives a low-frequency signal transmitted by the RF transceiver through the low-frequency transmitting port. The IF amplifier receives a first IF signal transmitted by the RF transceiver through the first IF transmitting port or receives a second IF signal transmitted by the RF transceiver through the second IF transmitting port. The high-frequency amplifier receives a high-frequency signal transmitted by the RF transceiver through the high-frequency transmitting port. A low-frequency antenna, connected to the low-frequency antenna port, is configured to transmit and receive amplified low-frequency signals. An intermediate frequency (IF) antenna, connected to the IF antenna port, is configured to transmit and receive amplified IF signals. A high-frequency antenna, connected to the high-frequency antenna port, is configured to transmit and receive amplified high-frequency signals. The first power module 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 from the radio frequency transceiver, and the first power supply port is connected to the power receiving port of the low-frequency amplifier. The second power supply module 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 radio frequency transceiver, and the third power supply port is connected to the power receiving port of the high frequency amplifier. Power compatible devices are 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 terminal of the first switching switch is connected to the second power supply port and the fourth power supply port respectively, and the second terminal 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 radio frequency transceiver system according to claim 1, wherein the radio frequency front-end module further comprises: The second switching switch has its first terminals connected to the first intermediate frequency (IF) transmitter port and the second IF transmitter port, respectively, and its second terminal connected to the input port of the IF amplifier. It is configured to switch the connection relationship between the first IF transmitter port or the second IF transmitter port and the input port of the IF amplifier.

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

5. The radio frequency transceiver system according to claim 4, wherein both the first power supply module and the second power supply module are boost / buck power supply modules; The second terminals of the third switching switch and the fourth switching switch are also respectively connected to the radio frequency transceiver. The radio frequency transceiver is configured to receive amplified low-frequency signals, intermediate-frequency signals and high-frequency signals, and output the first control signal to the first power module based on the output power information of the amplified low-frequency signals or intermediate-frequency signals, and output the second control signal to the second power module based on the output power information of the amplified intermediate-frequency signals or high-frequency signals. The first control signal is further configured to control the magnitude of the electrical signal output from the first power supply port or the second power supply port, and the second control signal is further configured to control the magnitude of the electrical signal output from the third power supply port or the fourth power supply port.

6. The radio frequency transceiver system according to claim 5, wherein the radio frequency front-end module further comprises: A first coupler, the input terminal of the first coupler is connected to the second terminal of the third switching switch, the first output terminal of the first coupler is connected to the radio frequency transceiver, and the second output terminal of the first coupler serves as the low-frequency antenna port and is connected to the low-frequency antenna; The second coupler has its input terminal connected to the second terminal of the third switching switch, its first output terminal connected to the radio frequency transceiver, and its second output terminal serving as the intermediate frequency antenna port and connected to the intermediate frequency antenna. The third coupler has its input terminal connected to the second terminal of the fourth switching switch, its first output terminal connected to the radio frequency transceiver, and its second output terminal connected to the high-frequency antenna as the high-frequency antenna port.

7. In the radio frequency transceiver system according to 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 the average output power and / or the transient output power.

8. The radio frequency transceiver system according to claim 4, wherein the radio frequency front-end module further comprises: The fifth switching switch has a first end connected to the output port of the low-frequency amplifier, and each second end is respectively connected to the first end of each 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 the first end of the sixth switching switch is connected to the output port of the intermediate frequency amplifier, and each second end is respectively connected to the first end of each of the plurality of intermediate frequency duplexers, and is configured to switch the 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 of the second ends is respectively connected to the first end of each 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 radio frequency transceiver system according to claim 4, wherein the radio frequency front-end module further comprises: The eighth switching switch, multiple low-noise amplifiers, and multiple receiver ports; The input ports of the plurality of low-noise amplifiers are respectively connected to at least one of the first terminals of the plurality of low-frequency duplexers, the plurality of intermediate-frequency duplexers, and the plurality of high-frequency duplexers. The output ports of the plurality of low-noise amplifiers are respectively connected to the first terminals of the eighth switching switch, and the second ports of the eighth switching 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 plurality of 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 low-frequency bands, the plurality of intermediate-frequency duplexers correspond to different intermediate-frequency bands, and the plurality of high-frequency duplexers correspond to different high-frequency bands.

11. A communication device comprising a radio frequency transceiver system as described in any one of claims 1-10.

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