Radio frequency front-end module and electronic equipment

Abstract

The invention relates to a radio frequency front-end module and electronic equipment. The radio frequency front-end module comprises a first signal transmission link without a filter device; the radio frequency front end module further comprises a second signal transmission link. Wherein the first signal transmission link is used for transmitting a first uplink cellular signal of a first communication mode to the antenna module, so that the antenna module is used for transmitting the first uplink cellular signal; and the second signal transmission link is used for receiving the downlink cellular signal of the first communication mode transmitted by the antenna module. By adopting the radio frequency front-end module, the power consumption of the electronic equipment when transmitting cellular signals can be optimized.

Description

Technical Field

[0001] This application relates to the technical field of electronic devices, and particularly to a radio frequency front-end module and an electronic device. Background Art

[0002] During the cellular communication process of an electronic device, a cellular signal is transmitted to an antenna through a transmission link in the radio frequency front-end module, so as to transmit the cellular signal through the antenna. Among them, there are multiple radio frequency components with different functions on the transmission link.

[0003] Currently, there is a problem of high power consumption when the electronic device transmits cellular signals. Therefore, in order to ensure the communication performance of the electronic device, it is urgent to solve the problem of optimizing the power consumption when the electronic device transmits signals. Summary of the Invention

[0004] Based on this, it is necessary to provide a radio frequency front-end module and an electronic device that can optimize the power consumption when the electronic device transmits cellular signals for the above technical problems.

[0005] In a first aspect, this application provides a radio frequency front-end module. The radio frequency front-end module includes a first signal transmission link that does not include a filtering device; the radio frequency front-end module further includes a second signal transmission link; wherein, the first signal transmission link is used to send a first uplink cellular signal of a first communication mode to an antenna module, so as to transmit the first uplink cellular signal by using the antenna module; the second signal transmission link is used to receive a first communication mode downlink cellular signal transmitted by the antenna module.

[0006] In a second aspect, this application also provides an electronic device. The electronic device includes the radio frequency front-end module as described in the first aspect above.

[0007] In the above radio frequency front-end module and electronic device, the radio frequency front-end module includes a first signal transmission link that does not include a filtering device and the radio frequency front-end module further includes a second signal transmission link. Among them, the first signal transmission link is used to send a first uplink cellular signal of a first communication mode to an antenna module, so as to transmit the first uplink cellular signal by using the antenna module, while the second signal transmission link is used to receive a first communication mode downlink cellular signal transmitted by the antenna module. In this way, the electronic device can use the radio frequency front-end module to both send the first uplink cellular signal and receive the downlink cellular signal, ensuring the normal communication of the electronic device. During the process of sending the first uplink cellular signal by using the first signal transmission link, since the first signal transmission link does not include a filtering device, the power consumption brought by the filtering device can be saved, so that the first uplink cellular signal can be transmitted by using the first signal transmission link under low power consumption, optimizing the communication performance of the electronic device. Description of the Drawings

[0008] To more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the accompanying drawings required for the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description are only some embodiments of the present application. For those of ordinary skill in the art, without creative efforts, other accompanying drawings can be obtained based on these drawings.

[0009] Figure 1 It is a schematic structural diagram of a radio frequency front-end module in an embodiment;

[0010] Figure 2 It is a schematic composition diagram of a power consumption module in an embodiment;

[0011] Figure 3 It is a schematic diagram of the framework of an electronic device constructed based on Phase7 devices in an embodiment;

[0012] Figure 4 It is a schematic diagram of the framework of an electronic device constructed based on Phase7 lite devices in an embodiment;

[0013] Figure 5 It is a schematic diagram of the framework of an electronic device constructed based on Phase7 LE devices in an embodiment;

[0014] Figure 6 It is a schematic architecture diagram of a chip device in an embodiment;

[0015] Figure 7 It is a schematic structural diagram of another radio frequency front-end module in an embodiment;

[0016] Figure 8 It is a schematic structural diagram of another radio frequency front-end module in an embodiment;

[0017] Figure 9 It is a schematic structural diagram of another radio frequency front-end module in an embodiment;

[0018] Figure 10 It is a schematic structural diagram of the Multi-on technology in an embodiment;

[0019] Figure 11 It is a schematic structural diagram of another radio frequency front-end module in an embodiment;

[0020] Figure 12 In an embodiment, based on Figure 6 It is a schematic structural diagram of the radio frequency front-end module of the chip device shown;

[0021] Figure 13 It is a schematic structural diagram of another radio frequency front-end module in an embodiment;

[0022] Figure 14 Schematic diagram of the structure of another radio frequency front-end module in an embodiment;

[0023] Figure 15 Schematic diagram of the structure of a duplexer in an embodiment;

[0024] Figure 16 Schematic diagram of the loss distribution of a filtering device in an embodiment;

[0025] Figure 17 Schematic diagram of the structure of another radio frequency front-end module in an embodiment;

[0026] Figure 18 Schematic diagram of the structure of another radio frequency front-end module in an embodiment;

[0027] Figure 19 Schematic diagram of the structure of another radio frequency front-end module in an embodiment;

[0028] Figure 20 Another one in an embodiment is based on Figure 6 Schematic diagram of the structure of a radio frequency front-end module of the shown chip device;

[0029] Figure 21 Schematic diagram of the loss of a transmission link in an embodiment;

[0030] Figure 22 Schematic diagram of the structure of another radio frequency front-end module in an embodiment;

[0031] Figure 23 Schematic diagram of the structure of an electronic device in an embodiment;

[0032] Figure 24 Schematic diagram of the structure of another electronic device in an embodiment;

[0033] Figure 25 Schematic diagram of the structure of another electronic device in an embodiment;

[0034] Figure 26 Schematic diagram of the structure of another electronic device in an embodiment;

[0035] Figure 27 Schematic diagram of the structure of another electronic device in an embodiment;

[0036] Figure 28 Schematic diagram of the structure of another electronic device in an embodiment. Specific implementation manners

[0037] To make the above objects, features, and advantages of the present application more apparent and understandable, the following provides a detailed description of the specific embodiments of the present application in conjunction with the accompanying drawings. It should be understood that many specific details are set forth in the following description to facilitate a full understanding of the present application. However, the present application can be implemented in many other ways different from those described herein. Those skilled in the art can make similar improvements without departing from the connotation of the present application. Therefore, the present application is not limited by the specific embodiments disclosed below.

[0038] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those of ordinary skill in the technical field to which this application belongs. The terms used in the description of this application herein are only for the purpose of describing specific embodiments and are not intended to limit this application.

[0039] It can be understood that the terms "first", "second", etc. used in this application can be used herein to describe various elements, but these elements are not limited by these terms. For example, without departing from the scope of this application, the first resistor can be referred to as the second resistor, and similarly, the second resistor can be referred to as the first resistor. Both the first resistor and the second resistor are resistors, but they are not the same resistor. Thus, the features defined with "first" and "second" can explicitly or implicitly include at least one of such features. In the description of this application, the meaning of "a plurality" is at least two, such as two, three, etc., unless otherwise specifically defined.

[0040] It can be understood that for "connection" in the following embodiments, if there is an electrical signal or data transfer between the connected circuits, modules, units, etc., it should be understood as "electrical connection", "communication connection", etc. The terms "mount", "connect", "couple", "fix", etc. should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the internal connection of two components or the interaction relationship between two components, unless otherwise clearly defined.

[0041] As used herein, the singular forms "a", "an", and "the" may also include the plural forms unless the context clearly dictates otherwise. It should also be understood that the terms "comprise / include" or "have" etc. specify the presence of the stated features, wholes, steps, operations, components, parts, or combinations thereof, but do not preclude the presence or addition of one or more other features, wholes, steps, operations, components, parts, or combinations thereof. At the same time, the term "and / or" used in this specification includes any and all combinations of the related listed items.

[0042] During the process of cellular communication, an electronic device transmits a cellular signal to an antenna through a transmission link in a radio frequency front-end module, so as to transmit the cellular signal through the antenna. Among them, there are multiple radio frequency components with different functions on the transmission link. Currently, there is a problem of high power consumption when the electronic device transmits a cellular signal. Therefore, in order to ensure the communication performance of the electronic device, the problem of optimizing the power consumption when the electronic device transmits a signal needs to be solved urgently.

[0043] In view of this, an embodiment of the present application provides a radio frequency front-end module, which can reduce the power consumption when the electronic device transmits a signal.

[0044] In one embodiment, as Figure 1 shown, a schematic structural diagram of a radio frequency front-end module provided by an embodiment of the present application is shown. The radio frequency front-end module includes a first signal transmission link that does not include a filtering device; the radio frequency front-end module further includes a second signal transmission link; wherein, the first signal transmission link is used to send a first uplink cellular signal of a first communication mode to an antenna module, so as to transmit the first uplink cellular signal by using the antenna module; the second signal transmission link is used to receive a downlink cellular signal of the first communication mode transmitted by the antenna module.

[0045] For ease of understanding, before describing the radio frequency front-end module provided by the embodiment of the present application, the relevant situations regarding the power consumption of the electronic device obtained from the long-term simulation research and development, as well as the collection, demonstration, and verification of experimental data, carried out by the inventors of the present application are described.

[0046] The electronic device can operate in different modes, and uses the radio frequency front-end module to transmit cellular signals corresponding to different modes to the antenna for transmission. For example, the FDD (Frequency Division Duplexing) mode and the TDD (Time Division Duplexing) mode are two typical communication modes.

[0047] Taking the example of the electronic device transmitting a cellular signal in the FDD mode, in this scenario, the power consumption module composition in the radio frequency system architecture of the electronic device can be disassembled as Figure 2As shown in the figure. First, there are the baseband module and the modem module. The baseband module is, for example, the CPU module in an electronic device, etc.; the modem module, also known as the modulation and demodulation module, is used to process modulation and demodulation related to the communication system, etc. Continuing forward is the transceiver, which, for example, processes analog modulation, frequency locking, etc. in the processing system. Continuing forward is the transmit and receive module in the radio frequency front end. Taking the main set reception and diversity reception of an electronic device as an example, in the transmit and receive module of the main set, the reception, for example, includes a Power Amplifier (PA), a low noise amplifier (LNA), and a control module. The control module, for example, includes devices such as switches. The diversity reception module mainly includes its internal control module and LNA.

[0048] The transmit and receive module of the main set is, for example, Phase 7LE, which is called the enhanced seventh-generation integrated product. With the development of communication networks, from the initial 2G network that only supported voice calls to the current 5G network that supports high-speed data traffic, mobile communication is providing convenience for people's daily lives. However, the subsequent problem is that with the increase in communication network standards, electronic devices must support communication requirements under various network standards such as 2G, 3G, 4G, and 5G; limited by the size constraints of electronic devices, the space of the main board PCB of the electronic device has not increased significantly due to the increasing demand, which will lead to a very tight layout and wiring of the main board PCB. In order to meet the increasing demands of various network standards and at the same time take into account the problem of tight PCB layout, the high integration and miniaturization of devices have become an obvious development trend. From the initial Phase2 product that only supported Single Band to the Phase7 product that supports the integration of various standards, the integration degree of devices is getting higher and higher, and at the same time, the package size of devices is getting smaller and smaller.

[0049] As Figure 3 shows a schematic diagram of the electronic device framework constructed based on Phase7 devices. Among them, 2G LMB 3 / 4 / 5G LB PAMid and 3 / 4 / 5G MHB PAMid, etc. are power amplifier modules, all of which are Phase7 devices, and 2 / 3 / 4 / 5G LB 2 / 3 / 4 / 5G MHB eLNA is the radio frequency front end containing LNA. The intelligent switching switch is connected to multiple antennas in the electronic device.

[0050] As Figure 4 shows a schematic diagram of the electronic device framework constructed based on Phase7 lite devices. Comparing Figure 3 and Figure 4It can be seen that the main feature of Phase7 lite is that, on the premise of keeping the package size of the original Phase7 device unchanged, the external eLNA module is integrated into the PA Mid device to become an L-PAMid device containing an LNA, so as to achieve the purpose of high device integration and device miniaturization. In addition, the 3 / 4 / 5G MHB PAMid is built with an intelligent switching switch.

[0051] As Figure 5 shows a schematic diagram of the electronic device framework constructed based on the Phase7 LE device. Comparing Figure 4 and Figure 5 it can be seen that Phase7 LE further builds an intelligent switching switch on the basis of Phase7 lite. Moreover, Phase7 LE also integrates more other 5G functions, such as the 3 / 4 / 5G MHB PAMid supports the n41 dual transmission function, etc.

[0052] As Figure 6 shows a schematic diagram of the architecture of a typical Phase 7LE device QM77058 chip, which is built with a power amplifier, a duplexer, a surface acoustic wave filter SAW, a switch, and multiple LNA receiving modules, etc. Among them, the power amplifier includes multiple power amplifiers for processing cellular signals in different frequency bands, such as MB (medium frequency band) PA, HB (high frequency band) PA, and a single PA supporting the B7 band. The duplexer, for example, supports processing cellular signals in multiple frequency bands in the FDD mode, such as bands B1, B3, B7, B25, etc. The SAW, for example, supports processing cellular signals in multiple frequency bands in the TDD mode, such as bands B40, B41, B39, B34, etc. There are mainly three types of switches, such as the switches connected after each PA for PA transmission conversion; the switch array for receiving LNA conversion; and the switching switch DP5T at the front end of the common terminal, which is connected to the antenna. There are 6 LNAs, which respectively correspond to processing the cellular signals in the supported frequency bands, such as supporting the MHB (medium and high frequency) band, etc. In addition, there is an adjustable phase shift unit in the QM77058 chip.

[0053] From the power consumption module of the radio frequency system architecture, splitting and then focusing on one of the modules, it can be seen that the main and receive modules of the main set contain many detailed power consumption modules. Among them, for a radio frequency link, the main source of power consumption is also in the part involved in the transmit link, such as the PA and control modules in the transmit link.

[0054] As shown in Table 1, it shows a schematic diagram of the power consumption breakdown comparison of a transmit link in an FDD frequency band at different power levels. Among them, Table 1 takes the B3 band and the n3 band as examples.

[0055] Schematic Diagram of Power Consumption Breakdown Comparison of the Transmit Link in the FDD Frequency Band at Different Power Levels

[0056]

[0057] As can be seen from the data in Table 1, for example, in the transmit link of the B3 / n3 frequency band, the power consumption of the transmit link is mainly related to the level of the output power. Among them, since the control module is a passive device, its power consumption is fixed; while the power consumption of the PA is related to the power of the cellular signal being processed. Therefore, it is equivalent that the power consumption of the PA is mainly related to the level of the output power. And it can be clearly divided into several stages: in the low-power case (in the range of -9 to -5 dBm), the difference between the current and the power is not significant; in the medium-power case (in the range of 5 to 15 dBm), the difference between the current and the power is relatively small (about 20 to 30 mA); in the high-power case (above 18 dBm), the difference between the current and the power gradually becomes larger.

[0058] Then, for the power consumption of the PA in the transmit link, as can be seen from Table 1, the power consumption of the PA is proportional to the magnitude of the output power of the PA. That is to say, in order to obtain better power consumption performance, it is necessary to adjust the output power of the PA. For the architecture of the transmit link, there are switches, duplexers, etc. connected after the output end of the PA, and finally connected to the antenna in the electronic device. And for the output power of the transmit link, the output power of the transmit link is equal to the output power of the PA port minus the losses of the switch, duplexer, etc. For example, when the required output power of the transmit link is 23 dBm and the inherent losses of the switch and duplexer, etc. connected after the output end of the PA are 4 dBm, then the output power of the PA needs to reach 27 dBm. In summary, the power consumption of the transmit link is mainly concentrated in the power consumption of the PA and the inherent losses of the switch, duplexer, etc.

[0059] For the PA, it is obtained by combining and integrating multiple amplifier tubes. According to the curve characteristics of the amplifier tubes, the curve characteristics of the amplifier tubes include a linear region, a saturation region, and an avalanche region. Currently, the PA needs to work in the corresponding linear interval, that is, there is a linear change curvature between the current and the voltage. In the linear interval, when the voltage is constant, a greater gain means a larger current is required, which is the several gain modes we usually define for the PA, including LPM (low-gain interval), MPM (medium-gain interval), and HPM (high-gain interval). Among them, there are also some PAs that directly combine LPM and MPM and call them LPM directly. The currently actually used PAs are mainly divided into APT0 mode and APT1 mode, where APT0 can be understood as LPM, and APT can be understood as HPM. Based on the above-mentioned current characteristics of the PA and the structure of the transmit link, etc., by reducing the inherent power consumption of other parts in the transmit link except the PA, it can play a role in reducing the power consumption of the transmit link.

[0060] However, through research and experiments, it is found that in some scenarios, whether to use filtering devices such as duplexers to process the cellular signals on the transmission link has little or no impact on the communication quality. Therefore, there is little need to use filtering devices such as duplexers to process the cellular signals without discrimination.

[0061] Therefore, in the transmission link of the radio frequency front-end module provided by the embodiments of the present application, the first uplink cellular signal of the first communication mode can be transmitted to the antenna module through the first signal transmission link that does not include filtering devices, so as to use the antenna module to transmit the first uplink cellular signal; and the first signal transmission link does not include filtering devices, for example, does not include a duplexer. In this way, without affecting the transmission quality of the first uplink cellular signal, the first uplink cellular signal is transmitted to the antenna module for transmission by removing the filtering device, the power consumption of the filtering device is removed in the transmission link, the power consumption of the transmission link in the radio frequency front-end module is reduced, and the power consumption optimization is achieved when the electronic device transmits the first uplink cellular signal.

[0062] Optionally, the radio frequency front-end module can perform power amplification processing on the first uplink cellular signal and then use the first signal transmission link to further send it to the antenna module.

[0063] Optionally, the antenna module can include multiple antennas, and any one of the multiple antennas can be used to transmit the first uplink cellular signal.

[0064] In addition, a second signal transmission link is also provided in the radio frequency front-end module. The second signal transmission link is connected to the antenna module, and the electronic device can use the second signal transmission link to receive and transmit the downlink cellular signal received by the antenna module.

[0065] Among them, both the first uplink cellular signal and the downlink cellular signal are of the first communication mode. Optionally, the electronic device can use the first signal transmission link and the second signal transmission link to simultaneously send the first uplink cellular signal and receive the downlink cellular signal, so as to improve the communication quality.

[0066] Optionally, the radio frequency front-end module can be composed of the Phase 7LE device QM77058 chip in the above text.

[0067] Optionally, the first signal transmission link includes a switch, a signal transmission line, etc.

[0068] Optionally, when the first signal transmission link does not include filtering devices and performs transmission processing on the amplified first uplink cellular signal, the transceiver in the electronic device simultaneously meets and is compatible with all communication standards in this case, ensuring the normal communication and communication stability of the electronic device.

[0069] Optionally, the first uplink cellular signal is a signal that does not require signal processing. Therefore, transmitting the first uplink cellular signal using the first signal transmission link that does not include a filtering device can still ensure signal transmission quality and the communication quality of the electronic device.

[0070] In one embodiment, the first communication mode is an FDD communication mode.

[0071] In the above radio frequency front-end module and electronic device, the radio frequency front-end module includes a first signal transmission link that does not include a filtering device and the radio frequency front-end module further includes a second signal transmission link. Among them, the first signal transmission link is used to send the first uplink cellular signal of the first communication mode to the antenna module to transmit the first uplink cellular signal by using the antenna module, while the second signal transmission link is used to receive the downlink cellular signal of the first communication mode transmitted by the antenna module. In this way, the electronic device can use the radio frequency front-end module to both send the first uplink cellular signal and receive the downlink cellular signal, ensuring normal communication of the electronic device. During the process of sending the first uplink cellular signal using the first signal transmission link, since the first signal transmission link does not include a filtering device, the power consumption brought by the filtering device can be saved. Therefore, the first uplink cellular signal can be transmitted using the first signal transmission link under low power consumption, optimizing the communication performance of the electronic device.

[0072] In one embodiment, please refer to Figure 7 , which shows a schematic structural diagram of another radio frequency front-end module provided by an embodiment of the present application. The first signal transmission link is connected to the transceiver through a target power amplifier in the radio frequency front-end module; the target power amplifier is used to receive the first uplink cellular signal output by the transceiver, perform power amplification processing on the first uplink cellular signal, and then transmit the amplified first uplink cellular signal to the first signal transmission link; the first signal transmission link is used to transmit the amplified first uplink cellular signal to the antenna module.

[0073] That is to say, the radio frequency front-end module further includes a target power amplifier, and the target power amplifier is connected to the first signal transmission link. The transceiver transmits the first uplink cellular signal generated by the transceiver to the target power amplifier in the radio frequency front-end module through a preset transmission port. The target power amplifier performs power amplification processing on the first uplink cellular signal and then outputs it to the first signal transmission link to be sent to the antenna module through the first signal transmission link.

[0074] Optionally, the operating frequency band of the target power amplifier corresponds to the frequency band to which the frequency of the first uplink cellular signal belongs.

[0075] Optionally, taking the radio frequency front-end module configured based on the Phase 7LE device QM77058 chip in the above text as an example, the target power amplifier can be the MB PA in the QM77058 chip.

[0076] In the embodiment of the present application, the first uplink cellular signal can be amplified to the required level by the target power amplifier, improving the transmission distance and strength of the first uplink cellular signal, etc., to ensure the communication quality of the electronic device.

[0077] In one embodiment, both the first signal transmission link and the second signal transmission link include a band selection switch, and the band selection switch includes multiple signal paths; the band selection switch is used to conduct the first signal path corresponding to the first uplink cellular signal to transmit the amplified first uplink cellular signal to the antenna module through the first signal path; and is used to conduct the second signal path corresponding to the downlink cellular signal to transmit the downlink cellular signal through the second signal path.

[0078] Among them, the band selection switch switches to the signal path corresponding to the frequency band to which the frequency of the transmitted signal belongs to transmit the corresponding signal.

[0079] Based on this, when the first signal transmission link is working, in the case where the electronic device needs to transmit the first uplink cellular signal, the band selection switch conducts the first signal path corresponding to the first uplink cellular signal to transmit the amplified first uplink cellular signal to the antenna module through the first signal path corresponding to the first uplink cellular signal. When the second signal transmission link is working, in the case where the electronic device receives the downlink cellular signal, the band selection switch conducts the second signal path corresponding to the downlink cellular signal to transmit the downlink cellular signal received by the antenna module through the second signal path corresponding to the downlink cellular signal.

[0080] Optionally, as mentioned above, the first communication mode can be the FDD communication mode. At this time, the electronic device can simultaneously send the first uplink cellular signal and receive the downlink cellular signal. Correspondingly, the first signal path and the second signal path can be simultaneously conducted.

[0081] Optionally, there can be multiple band selection switches, and each band selection switch conducts the first signal path corresponding to the first uplink cellular signal to transmit the amplified first uplink cellular signal to the antenna module. The number of band selection switches is not specifically limited here.

[0082] Exemplarily, the process of the radio frequency front-end module processing the first uplink cellular signal is described below with two band selection switches. That is, the band selection switch includes a first band selection switch and a second band selection switch, but this is not used to limit the present application.

[0083] In one embodiment, as Figure 8 shown, a schematic structural diagram of another radio frequency front-end module provided by an embodiment of the present application is shown. The band selection switch includes a first band selection switch and a second band selection switch. The first band selection switch is connected between the target power amplifier and the second band selection switch, and the second band selection switch is also connected to the antenna module. The first band selection switch is used to transmit the amplified first uplink cellular signal to the second band selection switch. The second band selection switch is used to transmit the amplified first uplink cellular signal to the antenna module. The second band selection switch is also used to receive the downlink cellular signal transmitted by the antenna module.

[0084] Wherein, both the first band selection switch and the second band selection switch include a plurality of signal paths, and the signal paths conducted by the first band selection switch and the second band selection switch together constitute a first signal path.

[0085] Alternatively, a second signal path is conducted through the second band selection switch. Wherein, the downlink cellular signal transmitted through the second signal path is further transmitted to the receiving link after the second band selection switch, so as to transmit the downlink cellular signal to the transceiver through the receiving link. It should be noted that Figure 8 the subsequent receiving link is not shown in the figure.

[0086] Exemplarily, when transmitting the first uplink cellular signal, the first band selection switch conducts the signal path corresponding to the first uplink cellular signal, so as to transmit the amplified first uplink cellular signal to the second band selection switch by using the signal path corresponding to the first uplink cellular signal. The second band selection switch conducts the signal path corresponding to the first uplink cellular signal, so as to transmit the amplified first uplink cellular signal to the antenna module by using the signal path corresponding to the first uplink cellular signal. That is to say, when transmitting the first uplink cellular signal, the signal path corresponding to the first uplink cellular signal in the first band selection switch and the signal path corresponding to the first uplink cellular signal in the second band selection switch are connected to form a first signal path, so as to directly transmit the amplified first uplink cellular signal to the antenna module.

[0087] Taking the radio frequency front-end module being based on the Phase 7LE device QM77058 chip in the above text as an example, optionally, please refer to Figure 6 , the first band selection switch can be the switch connected after MB PA in QM77058, and the second band selection switch can be the DP5T switch in QM77058. Correspondingly, the first uplink cellular signal can be a cellular signal in Band 3 or n3 band.

[0088] In the embodiments of the present application, the first band selection switch and the second band selection switch are used to conduct the number-limiting path corresponding to the first uplink cellular signal or the downlink cellular signal, so as to ensure that the signal can be accurately transmitted, thereby ensuring the stable communication of the electronic device.

[0089] In one embodiment, as Figure 9 shown, a schematic structural diagram of another radio frequency front-end module provided by the embodiments of the present application is shown. The radio frequency front-end module further includes a multi-conduction unit, and the multi-conduction unit is connected to the second band selection switch, one end of the first signal path, and one end of the second signal path; the multi-conduction unit is used to adjust the impedance matching of the second band selection switch, the first signal path, and the second signal path, so as to realize the transmission of the first uplink cellular signal and the reception of the downlink cellular signal.

[0090] The Multi-on (multi-conduction) function can realize the simultaneous conduction between multiple IO terminals of the radio frequency switch and the common terminal while ensuring a high isolation degree.

[0091] In devices such as PA mid and L-PA mid, the way of simultaneously conducting between the front-end ASM (antenna switch module) and the SAW and duplexer through the antenna switch module is the Multi-on technology, as Figure 10 shown. At the same time, in order to solve the adaptation problem existing in the antenna switch module after being simultaneously turned on, it is necessary to adjust the Phaseshift (phase) network between the antenna switch module and the SAW and duplexer to achieve impedance matching in order to achieve the optimal performance.

[0092] Based on this, in the embodiments of the present application, a multi-conduction unit is provided between the second band selection switch, the first signal path, and the second signal path, and the impedance matching among the three is adjusted through the multi-conduction unit, so as to ensure that the electronic device can have better performance while transmitting the first uplink cellular signal and receiving the downlink signal.

[0093] Optionally, taking the radio frequency front-end module that can be based on the Phase 7LE device QM77058 chip in the above as an example, the multi-conduction unit can be the phase shift (phase unit) in the QM77058 chip, and the impedance matching is realized by adjusting the phase of the network formed by the second band selection switch, the first signal path, and the second signal path.

[0094] Optionally, the multi-conduction unit can work when the electronic device communicates based on the first communication mode.

[0095] In the embodiments of the present application, based on the multi-channel conduction unit, the network impedance matching of the second frequency band selection switch, the first signal path, and the second signal path is adjusted to further improve the communication performance and communication stability of the electronic device, ensuring that the first signal transmission link and the second signal transmission link can work normally simultaneously.

[0096] Hereinafter, only one implementation manner of the radio frequency front-end module for conducting the first signal path to transmit the first uplink cellular signal will be described.

[0097] Please refer to Figure 11 the structural schematic diagram of another radio frequency front-end module shown. The radio frequency front-end module further includes an output port connected to the first frequency band selection switch and an input port connected to the second frequency band selection switch, wherein the output port and the input port are connected through a signal line disposed outside the radio frequency front-end module; the first frequency band selection switch is configured to transmit the amplified first uplink cellular signal to the output port, so as to transmit the amplified first uplink cellular signal to the input port through the signal line; the second frequency band selection switch is configured to transmit the amplified first uplink cellular signal input from the input port to the antenna module.

[0098] That is to say, on the first signal transmission link, the amplified first uplink cellular signal output by the first frequency band selection switch is transmitted to the second frequency band selection switch through the output port and the input port. In this way, without changing the original architecture of the radio frequency front-end module, the output port and the input port can be connected through a signal line disposed outside the radio frequency front-end module, so that the first uplink cellular signal output by the first frequency band selection switch reaches the second frequency band selection switch, reducing the complexity of circuit implementation.

[0099] Taking the radio frequency front-end module being based on the Phase 7LE device QM77058 chip in the above as an example, optionally, continue to refer to Figure 6 . The output port can be the MB_Tx_Out1 port or the MB_Tx_Out2 port in the QM77058, and the input port can be the TRX3 port or the TRX2 port in the QM77058. Optionally, the antenna module may include two antennas, and the operating frequency bands of the two antennas can be the MHB (mid-high frequency) band.

[0100] Taking this as an example, as Figure 12 shows the structural schematic diagram of a radio frequency front-end module provided by the embodiments of the present application based on the QM77058. Based on Figure 12 , taking the first uplink cellular signal being in the B3 band or the n3 band as an example, the transmission process of the first uplink cellular signal can be as follows:

[0101] 1) The transceiver outputs the first uplink cellular signal to the MB_IN port of the QM77058, enabling the first uplink cellular signal to be input from the MB_IN port to the radio frequency front-end module;

[0102] 2) The input first uplink cellular signal enters the MB PA inside the radio frequency front-end module for power amplification processing;

[0103] 3) The amplified first uplink cellular signal is switched to be output from the MB TX_OUT1 port after passing through the switch (the first-stage band-selective switch) connected to the MB PA;

[0104] 4) The first uplink cellular signal output from the MB TX_OUT1 is input to the front-end DP5T switch (the second-band selection switch) from the TRX3 port; among them, the first uplink cellular signal output from the MB TX_OUT1 and the ANT port of the duplexer need to perform phase debugging in the multiplexing conduction unit to achieve impedance matching;

[0105] 5) Finally, the first uplink cellular signal is output from the ANT1 port or the ANT2 port in the DP5T switch (the second-stage band-selective switch) at the forefront of the QM77058 to the antenna module;

[0106] 6) The antenna ANT1 or ANT0 in the antenna module is used to transmit the first uplink cellular signal. Among them, the signal output from the ANT1 port is transmitted through the ANT0, and the signal output from the ANT2 port is transmitted through the ANT1.

[0107] In the embodiment of the present application, when transmitting the uplink cellular signal in the FDD band, the part of the filtering device is omitted, and for the first time, the technology of realizing SAW-less in the transmission link during the transmission of the uplink cellular signal in the FDD band is proposed, which effectively saves the power consumption of the electronic device while ensuring the communication quality of the electronic device.

[0108] In addition to receiving the downlink cellular signal, the second signal transmission link can also send the second uplink cellular signal to the antenna module. The following describes an implementation manner of the second signal transmission link for sending the second uplink cellular signal.

[0109] In one embodiment, the second signal transmission link is further configured to send the second uplink cellular signal of the first communication mode to the antenna module to transmit the second uplink cellular signal by using the antenna module. The second uplink cellular signal is an uplink cellular signal with signal processing requirements; the signal processing requirements include at least one of spurious processing requirements and coexistence processing requirements.

[0110] As mentioned above, the first uplink cellular signal can be a signal without signal processing requirements, so it can be transmitted without being processed by a filtering device. When the transceiver outputs a second uplink cellular signal with signal processing requirements, the second signal transmission link can be used to transmit it to the antenna module.

[0111] Optionally, the second signal transmission link includes a filtering device, which is used to process the second uplink cellular signal so that the processed second uplink cellular signal meets the signal processing requirements.

[0112] Among them, the signal processing requirements may include spurious processing requirements. For example, if the second uplink cellular signal carries spurious signals, a filtering device is needed to filter the second uplink cellular signal to achieve spurious processing and meet the signal processing requirements. Or, the electronic device may simultaneously transmit and receive multiple different modes of communication signals, and coexistence processing requirements are required between the second uplink cellular signal and other communication signals to ensure the communication quality of the electronic device.

[0113] In one embodiment, as Figure 13 shown, a schematic structural diagram of another radio frequency front-end module provided by an embodiment of the present application is shown. Among them, the radio frequency front-end module further includes a target power amplifier, and the second signal transmission link is connected to the transceiver through the target power amplifier; the second signal transmission link includes a first filtering device; the target power amplifier is used to receive the second uplink cellular signal output by the transceiver, perform power amplification processing on the second uplink cellular signal, and then transmit the amplified second uplink cellular signal to the second signal transmission link; the second signal transmission link is used to filter the amplified second uplink cellular signal by using the first filtering device and send the filtered second uplink cellular signal to the antenna module. It should be noted that Figure 13 the first filtering device in the second signal transmission link is not shown.

[0114] In this way, by filtering the second uplink cellular signal through the first filtering device, it can be ensured that the processed second uplink cellular signal meets the coexistence processing requirements, improve the communication quality of the second uplink cellular signal, and ensure normal communication of the electronic device.

[0115] In the embodiment of the present application, either the first signal transmission link or the second signal transmission link can be used to transmit the uplink cellular signal, which improves the flexibility of the electronic device to transmit the uplink cellular signal, enabling the electronic device to transmit uplink cellular signals with different processing requirements.

[0116] In addition, as mentioned above, the second signal transmission link can be used to receive downlink cellular signals. Among them, the second signal transmission link can use the first filtering device to filter the received downlink cellular signals and then continue to transmit them, improving the transmission quality of the downlink cellular signals.

[0117] Based on the Figure 9 structural diagram shown, an embodiment of the present application provides Figure 14 a schematic structural diagram of another radio frequency front-end module shown. Among them, the first filtering device includes a first output port, and the first filtering device is connected to the subsequent receiving link through the first output port; the second signal transmission link is used to filter the downlink cellular signals by using the first filtering device after receiving the downlink cellular signals, and transmit the filtered downlink cellular signals to the subsequent receiving link through the first output port, so as to transmit the downlink cellular signals to the transceiver through the subsequent receiving link.

[0118] That is to say, during the process of the second signal transmission link transmitting the downlink cellular signals, the second frequency band selection switch is used to conduct the second signal path, transmit the downlink cellular signals to the first filtering device for filtering, and the filtered downlink cellular signals are output from the first output port of the first filtering device to the subsequent receiving link.

[0119] Optionally, an LNA can be arranged in the subsequent receiving link, and the LNA is used to amplify the power of the downlink cellular signals and then transmit them to the transceiver.

[0120] In addition, referring to Figure 14 shown, exemplarily, during the process of transmitting the second uplink cellular signal, the first frequency band selection switch conducts the target signal path corresponding to the second uplink cellular signal, and uses the target signal path to transmit the amplified second uplink cellular signal to the uplink port (not shown in the figure) of the first filtering device. The first filtering device filters the second uplink cellular signal received through the uplink port and then transmits it to the second frequency band selection switch. The second frequency band selection switch conducts the target signal path corresponding to the second uplink cellular signal, so as to use the target signal path to transmit the second uplink cellular signal to the antenna module.

[0121] In the embodiment of the present application, by using the first filtering device in the second signal transmission link, both the second uplink cellular signals and the downlink cellular signals can be filtered, reducing the cost of the electronic device, realizing the effective utilization of the first filtering device, and reducing the hardware integration complexity of the radio frequency front-end module.

[0122] In one embodiment, the first filtering device is a duplexer. As Figure 15 shown, a schematic structural diagram of a duplexer provided by an embodiment of the present application is shown.

[0123] A duplexer, which is a type of multiplexer, is an important passive device in modern mobile communication systems. A duplexer has three ports, namely the TX (transmission) port, the RX (reception) port, and the ANT (common) port. A multiplexer, on the other hand, corresponds to multiple TX (transmission) ports, multiple RX (reception) ports, and a single ANT (common) port. As the most important passive device in the FDD frequency band, the multiplexer occupies an absolutely core position in current terminal communication.

[0124] The first output port of the first filtering device in the above text can be the RX port of the duplexer, and the uplink port of the first filtering device can be the TX port of the duplexer. Also, the downlink cellular signal enters the duplexer through the ANT port of the duplexer for filtering processing.

[0125] Such as Figure 16 shows a schematic diagram of the loss distribution of a filtering device for processing signals in the B3 / n3 frequency band. As can be seen from Figure 16 it, in the embodiments of the present application, by transmitting the first uplink cellular signal to the antenna through the first signal transmission link that does not include a filtering device, the obtained gain is approximately 1.5 dB, and the gain in the worst frequency range can reach more than 1.5 dB (the above optimization does not include the additional impact brought by the board-end trace, which is generally about 0.2 - 0.3 dB).

[0126] As shown in Table 2, it shows the power consumption comparison between the existing scheme of transmitting signals through a filtering device (duplexer) and the scheme proposed based on Figure 12 the present application shown. Taking the N3 frequency band and the B3 frequency band as examples. It can be seen that the comparison of the gains between the two schemes is very clear. At the same power consumption, the scheme provided by the present application can obtain higher power. On the contrary, it can also reduce more power consumption at the same power, improving the communication performance of the electronic device.

[0127] Table 2 Power Consumption Comparison of Two Schemes

[0128]

[0129]

[0130] In the embodiments of the present application, by discarding the transmission part of the duplexer at the front end in the transmission link of the uplink cellular signal in the FDD frequency band, the loss of the transmission link is optimized so as to achieve the optimization of power consumption and effectively save the power consumption of the electronic device.

[0131] As can be seen from the solutions given in the above embodiments, the loss of the entire transmission link is still relatively large. One reason is that there is loss in the front-end band selection switches during the process of transmitting signals, and these band selection switches do not have additional special designs for FDD bands. If the design can be optimized, the performance of the electronic device can be further improved.

[0132] Based on this, in the embodiments of the present application, in addition to transmitting the first uplink cellular signal to the antenna module through the output port, the input port, and the signal line outside the radio frequency front-end module provided above, in order to further reduce the power consumption of the electronic device, a low-loss mode is set for the band selection switch. Among them, the band selection switch can also provide a direct-through path specifically for transmitting the first uplink cellular signal, thereby effectively saving power. The following describes this implementation method.

[0133] In one embodiment, on the basis of Figure 14 the following gives another structural schematic diagram of the radio frequency front-end module provided by the embodiments of the present application as shown in Figure 17 The first signal path includes a first direct-through path Bypass1 provided in the second band selection switch, and the first direct-through path connects the first band selection switch and the antenna module; the second band selection switch is used to transmit the amplified first uplink cellular signal to the antenna module through the first direct-through path.

[0134] That is, the transceiver outputs the first uplink cellular signal to the radio frequency front-end module, enters the radio frequency front-end module from the corresponding signal input port in the radio frequency front-end module, and is transmitted to the target power amplifier. The target power amplifier amplifies the first uplink cellular signal, and the amplified first uplink cellular signal is transmitted from the output end of the target power amplifier to the first band selection switch, then transmitted from the first band selection switch to the first direct-through path Bypass1 of the second band selection switch, and is transmitted to the antenna module through the first direct-through path and is emitted by the antenna in the antenna module. In this way, by setting a first direct-through path in the second band selection switch to transmit the amplified first uplink cellular signal, it is equivalent to setting a separate low-loss mode for the second band selection switch for the first uplink cellular signal, thereby reducing the loss when the second band selection switch works during the process of the electronic device transmitting the first uplink cellular signal and optimizing the power consumption of the transmission link.

[0135] In another embodiment, as shown in Figure 18As shown, it shows a schematic structural diagram of another radio frequency front-end module provided by an embodiment of the present application. The first signal path further includes a second direct path Bypass2 provided in the first band selection switch, and the second direct path communicates with the target power amplifier and the first direct path in the second band selection switch; the first band selection switch is used to transmit the amplified first uplink cellular signal to the first direct path in the second band selection switch through the second direct path.

[0136] That is, the target power amplifier amplifies the first uplink cellular signal, and the amplified first uplink cellular signal is transmitted from the output end of the target power amplifier to the first band selection switch, and then transmitted to the first direct path of the second band selection switch through the second direct path in the first band selection switch, and is transmitted to the antenna module through the first direct path and emitted by the antenna in the antenna module. In this way, a direct state is set for the first band selection switch closest to the antenna module, and a direct state is set for the second band selection switch closest to the target power amplifier, so that both band selection switches have a separate low-loss mode to optimize the loss when the two band selection switches work and achieve better transmission performance.

[0137] In another embodiment, the signal path includes a second direct path provided in the first band selection switch, and the second direct path communicates with the target power amplifier and the second band selection switch; the first band selection switch is used to transmit the amplified first uplink cellular signal to the second band selection switch through the second direct path.

[0138] For the uplink cellular signal with signal processing requirements, in addition to using the first filtering device in the second signal transmission link described above to process it to meet the signal processing requirements, in the embodiments of the present application, the uplink cellular signal can also be directly processed by the transceiver to meet the signal processing requirements. That is, the uplink cellular signal output from the transceiver is the first uplink cellular signal that has already met the signal processing requirements, rather than the second uplink cellular signal with signal processing requirements. In this way, only the first signal transmission link can be directly used for the first uplink cellular signal, saving the power consumption of the electronic device.

[0139] At this time, for the second signal transmission link, it is only used to receive the downlink cellular signal. To filter the downlink cellular signal, other filtering devices can be used to replace the duplexer in the above text to filter the downlink cellular signal and transmit it to the subsequent receiving link. The following describes this implementation method.

[0140] In one embodiment, the second signal transmission link includes a second filtering device, the second filtering device includes a second output port, and the second filtering device is connected to the subsequent receiving link through the second output port; the second signal transmission link is configured to filter the downlink cellular signal by using the second filtering device after receiving the downlink cellular signal, and transmit the filtered downlink cellular signal to the subsequent receiving link through the second output port, so as to transmit the downlink cellular signal to the transceiver through the subsequent receiving link. The first uplink cellular signal is an uplink cellular signal that has met the signal processing requirements after being pre-processed by the transceiver; the signal processing requirements include at least one of spurious processing requirements and coexistence processing requirements.

[0141] Exemplarily, on the basis of Figure 9 the following gives another structural schematic diagram of the radio frequency front-end module provided by the embodiment of the present application as shown in Figure 19 During the process of the second signal transmission link transmitting the downlink cellular signal, the second band selection switch receives the downlink cellular signal transmitted by the antenna module, transmits the downlink cellular signal to the second filtering device, and the second filtering device filters the downlink cellular signal and outputs the filtered downlink cellular signal from the second output port to the subsequent receiving link, so as to transmit the downlink cellular signal to the transceiver through the subsequent receiving link.

[0142] Optionally, the second filtering device is a surface acoustic wave filter (SAW). The main principle of the surface acoustic wave filter is to utilize the piezoelectric characteristics of the piezoelectric material, convert the input signal of the electric wave into mechanical energy by using the input and output transducers, and then convert the mechanical energy into an electric signal after processing, so as to achieve the goal of filtering unnecessary signals and noise and improving the receiving quality.

[0143] In the embodiment of the present application, the surface acoustic wave filter is used to replace the duplexer, and the uplink cellular signal is directly processed at the transceiver end to meet the signal processing requirements. In this way, the first uplink cellular signals output by the transceiver all meet the signal processing requirements, so that the first signal transmission link without a filtering device can be directly used to transmit the first uplink cellular signal to the antenna module for transmission, while the received downlink cellular signal is filtered by the surface acoustic wave filter, so that the power consumption of the transmission link can be reduced while ensuring that the receiving link can perform reasonable filtering processing on the downlink cellular signal, and the communication quality of the electronic device can be ensured.

[0144] Taking the radio frequency front-end module based on the Phase 7LE device QM77058 chip in the above text as an example, the first band selection switch is the switch connected after the MB PA in QM77058, the second band selection switch is the DP5T switch in QM77058, and the first uplink cellular signal is a signal in the B3 band or n3 band. Please refer to Figure 20, shows a schematic diagram of the structure of another RF front-end module based on QM77058 provided in an embodiment of the present application. Here, in the first signal transmission link, the second direct path in the first frequency band selection switch and the first direct path in the second frequency band selection switch are used to transmit the first uplink cellular signal to the antenna module; in the second signal transmission link, SAW is used to filter the downlink cellular signal received by the antenna module. Here, the transmission process of the first uplink cellular signal can be as follows:

[0145] 1) The first uplink cellular signal output by the transceiver is input into the RF front-end module from the MB_IN port of QM77058;

[0146] 2) The input first uplink cellular signal is power amplified by the MB PA inside the RF front-end module;

[0147] 3) The amplified first uplink cellular signal is output through a direct path in the switch (first frequency band selection switch);

[0148] 4) The first uplink cellular signal output by the switch directly enters DP5T (second frequency band selection switch) and is transmitted to the antenna module through the direct path in DP5T.

[0149] 5) Using the antenna ANT1 or ANT0 in the antenna module to transmit the first uplink cellular signal, wherein the signal output from the ANT1 port is transmitted via ANT0, and the signal output from the ANT2 port is transmitted via ANT1.

[0150] It should be noted that, optionally, due to the addition of the first direct path, the DP5T switch inside the QM77058 can be improved to DP6T, that is, from a double-pole five-throw switch to a double-pole six-throw switch, to meet the requirement of switching to conduct the first direct path.

[0151] like Figure 21 Shown based on Figure 20 The schematic diagram of the loss of the entire transmission link in the solution proposed in this application shows that the loss of the entire transmission link is only 1dB, while the loss of the entire link in the existing solution is about 4dB (including 1.5dB duplexer and 2.5dB switch loss).

[0152] In an optional embodiment of the present application, in addition to sending and receiving cellular signals of the first communication mode when the electronic device communicates based on the first communication mode (such as sending a first uplink cellular signal of the FDD communication mode and receiving a downlink cellular signal of the FDD communication mode), the RF front-end module can send cellular signals of the second communication mode when the electronic device communicates based on the second communication mode.

[0153] In one embodiment, the second communication mode is the TDD communication mode. That is to say, the radio frequency front-end module can also transmit a third uplink cellular signal in the TDD communication mode to the antenna module to transmit the third uplink cellular signal by using the antenna module.

[0154] Based on Figure 7 , the embodiment of the present application also gives a schematic structural diagram of another radio frequency front-end module as shown in Figure 22 The radio frequency front-end module further includes a third signal transmission link; the third signal transmission link is connected to the transceiver through a target power amplifier in the radio frequency front-end module; the third signal transmission link includes a third filtering device; the target power amplifier is configured to receive a third uplink cellular signal in the second communication mode output by the transceiver, perform power amplification processing on the third uplink cellular signal, and transmit the amplified third uplink cellular signal to the third signal transmission link; the third signal transmission link is configured to filter the third uplink cellular signal by using the third filtering device and then transmit the filtered third uplink cellular signal to the antenna module to transmit the third uplink cellular signal by using the antenna module.

[0155] Exemplarily, the transceiver outputs a third uplink cellular signal in the TDD mode to the target power amplifier in the radio frequency front-end module, and the target power amplifier performs power amplification processing on the third uplink cellular signal. When transmitting the third uplink cellular signal, the first band selection switch turns on the signal path corresponding to the third uplink cellular signal to transmit the amplified third uplink cellular signal to the third filtering device by using the signal path corresponding to the third uplink cellular signal. The third filtering device filters the third uplink cellular signal and then outputs the filtered third uplink cellular signal to the second band selection switch; the second band selection switch turns on the signal path corresponding to the third uplink cellular signal to transmit the filtered third uplink cellular signal to the antenna module by using the signal path corresponding to the third uplink cellular signal. That is to say, when transmitting the third uplink cellular signal, the signal path corresponding to the third uplink cellular signal in the first band selection switch and the signal path corresponding to the third uplink cellular signal in the second band selection switch are connected, so as to transmit the filtered third uplink cellular signal to the antenna module.

[0156] Optionally, the third filtering device is a surface acoustic wave filter.

[0157] Optionally, the target power amplifier used for amplifying the first uplink cellular signal and the target power amplifier used for amplifying the third uplink cellular signal are not the same power amplifier. The radio frequency front-end module is based on the Phase 7LE device QM77058 chip in the above text, and the HB PA in the QM77058 is used as the target power amplifier to amplify the third uplink cellular signal.

[0158] In the embodiments of the present application, a third signal transmission link is provided to transmit a third uplink cellular signal. In this way, different transmission links are provided for different uplink cellular signals of different communication modes, avoiding the influence between various signals and ensuring the communication quality of the electronic device in different communication modes.

[0159] In one embodiment, the present application further provides an electronic device, which includes the radio frequency front-end module described in any of the above embodiments. Exemplarily, the electronic device may be, but is not limited to, various personal computers, laptop computers, smart phones, tablet computers, Internet of Things devices, and portable wearable devices. The Internet of Things devices may be smart speakers, smart TVs, smart air conditioners, smart vehicle-mounted devices, etc. The portable wearable devices may be smart watches, smart bracelets, head-mounted devices, etc. Other limitations of the electronic device can be seen in the above description and will not be elaborated here.

[0160] For ease of understanding, the SAW-less based radio frequency front-end module provided by the present application will be described below with specific multiple embodiments.

[0161] Please refer to Figure 23 , which shows a schematic diagram of an electronic device architecture provided by the present application. In this electronic device, the transmission process of the cellular signal can be as follows: 1) The transceiver outputs a transmission signal, which after being amplified by the PA, enters different paths (including the path with TX SAW, the TX SAW-less path, and the path with a duplexer) through the first band selection switch respectively; 2) The transmission signal in the FDD mode that has met the signal processing requirements enters the TX SAW-less path through the first band selection switch and then is transmitted to the second band selection switch; The transmission signal in the FDD mode with signal processing requirements enters the TX input end of the duplexer after the first-stage band selection switch, and after being filtered by the duplexer, is transmitted to the second band selection switch; 3) The TX SAW-less path in the FDD mode and the Ant (common end) of the duplexer are connected together through the Multi-on technology, and the transmission signal in the FDD mode output through the second band selection switch is transmitted to the antenna for transmission; 4) The transmission signal in the TDD mode enters the path including TX SAW (surface acoustic wave filter of the transmission link) through the first band selection switch, and after being filtered by the TX SAW, is transmitted to the second band selection switch, and the transmission signal in the TDD mode output through the second band selection switch is transmitted to the antenna for transmission; 5) The received signal in the FDD mode passes through the antenna and then enters the Ant port of the duplexer from the second band selection switch, and then enters the subsequent receiving link from the RX port of the duplexer, and is transmitted to the transceiver through the subsequent receiving link. The specific processing components included in the receiving link are not shown in the figure.

[0162] Please refer toFigure 24 , which shows another schematic diagram of the electronic device architecture provided by this application. In this electronic device, the transmission process of the cellular signal can be as follows: 1) The transceiver outputs a transmitted signal, which after being amplified by the PA, enters different paths through the first band selection switch (including the path with TX SAW and the TX SAW-less path); 2) The transmitted signal in the FDD mode that has met the signal processing requirements enters the TX SAW-less path after passing through the first band selection switch, and then is transmitted to the second band selection switch; 3) The TX SAW-less path in the FDD mode is connected to the Ant (common terminal) of the duplexer through the Multi-on technology, and the transmitted signal in the FDD mode output after passing through the second band selection switch is transmitted to the antenna for transmission; 4) The transmitted signal in the TDD mode enters the path including TX SAW (surface acoustic wave filter of the transmission link) through the first band selection switch, and after being filtered by TX SAW, is transmitted to the second band selection switch, and the transmitted signal in the TDD mode output after passing through the second band selection switch is transmitted to the antenna for transmission; 5) The received signal in the FDD mode passes through the antenna and then enters the RX SAW (surface acoustic wave filter of the receiving link) from the second band selection switch, and then is output from the RX SAW to the subsequent receiving link, and is transmitted to the transceiver through the subsequent receiving link. The specific processing components included in the receiving link are not shown in the figure.

[0163] Please refer to Figure 25 , which shows another schematic diagram of the electronic device architecture provided by this application. In this electronic device, the transmission process of the cellular signal can refer to the signal transmission process in the architecture shown above Figure 23 , with the difference that the transmitted signal in the FDD mode is output to the antenna through the Bypass path set in the second band selection switch.

[0164] Please refer to Figure 26 , which shows another schematic diagram of the electronic device architecture provided by this application. In this electronic device, the transmission process of the cellular signal can refer to the signal transmission process in the architecture shown above Figure 24 , with the difference that the transmitted signal in the FDD mode is output to the antenna through the Bypass path set in the second band selection switch.

[0165] Please refer to Figure 27 , which shows another schematic diagram of the electronic device architecture provided by this application. In this electronic device, the transmission process of the cellular signal can refer to the signal transmission process in the architecture shown above Figure 23The signal transmission process in the shown architecture is different in that the second band selection switch outputs the transmission signal in FDD mode to the antenna through the Bypass path set in the second band selection switch, and the first band selection switch outputs the transmission signal in FDD mode to the second band selection switch through the Bypass path set in the first band selection switch.

[0166] Please refer to Figure 28 , which shows another schematic diagram of the electronic device architecture provided in this application. In this electronic device, the transmission process of the cellular signal can be referred to the above Figure 24 The signal transmission process in the shown architecture is different in that the second band selection switch outputs the transmission signal in FDD mode to the antenna through the Bypass path set in the second band selection switch, and the first band selection switch outputs the transmission signal in FDD mode to the second band selection switch through the Bypass path set in the first band selection switch.

[0167] In the description of this specification, the description referring to terms such as "some embodiments", "other embodiments", "ideal embodiments", etc. means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of this application. In this specification, the schematic description of the above terms does not necessarily refer to the same embodiment or example.

[0168] The technical features of the above embodiments can be combined arbitrarily. For the sake of concise description, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, it should be considered as the scope described in this specification.

[0169] The above-described embodiments only represent several implementation manners of this application. The description is relatively specific and detailed, but it should not be construed as a limitation on the patent scope of this application. It should be noted that for those of ordinary skill in the art, without departing from the concept of this application, several modifications and improvements can still be made, and these all belong to the protection scope of this application. Therefore, the protection scope of this application should be subject to the appended claims.

Claims

1. A radio frequency front-end module, characterized in that, The radio frequency front-end module includes a first signal transmission link that does not include a filtering device; the radio frequency front-end module further includes a second signal transmission link; Wherein, the first signal transmission link is used to send a first uplink cellular signal of a first communication mode to the antenna module to transmit the first uplink cellular signal by using the antenna module; The second signal transmission link is used to receive the downlink cellular signal of the first communication mode transmitted by the antenna module.

2. The radio frequency front-end module according to claim 1, characterized in that, The second signal transmission link is further used to send a second uplink cellular signal of the first communication mode to the antenna module to transmit the second uplink cellular signal by using the antenna module.

3. The radio frequency front-end module according to claim 2, characterized in that, The radio frequency front-end module further includes a target power amplifier, and the second signal transmission link is connected to the transceiver through the target power amplifier; the second signal transmission link includes a first filtering device; The target power amplifier is used to receive the second uplink cellular signal output by the transceiver, perform power amplification processing on the second uplink cellular signal, and then transmit the amplified second uplink cellular signal to the second signal transmission link; The second signal transmission link is used to perform filtering processing on the amplified second uplink cellular signal by using the first filtering device, and send the filtered second uplink cellular signal to the antenna module.

4. The radio frequency front-end module according to claim 3, characterized in that, The first filtering device includes a first output port, and the first filtering device is connected to a subsequent receiving link through the first output port; The second signal transmission link is used to perform filtering processing on the downlink cellular signal by using the first filtering device after receiving the downlink cellular signal, and transmit the filtered downlink cellular signal to the subsequent receiving link through the first output port, so as to transmit the downlink cellular signal to the transceiver through the subsequent receiving link.

5. The radio frequency front-end module according to claim 2, characterized in that, The second uplink cellular signal is an uplink cellular signal with signal processing requirements; The signal processing requirements include at least one of spurious processing requirements and coexistence processing requirements.

6. The radio frequency front-end module according to claim 3, characterized in that, The first filtering device is a duplexer.

7. The radio frequency front-end module according to claim 1, characterized in that, The second signal transmission link includes a second filtering device, the second filtering device includes a second output port, and the second filtering device is connected to a subsequent receiving link through the second output port; The second signal transmission link is used to perform filtering processing on the downlink cellular signal by using the second filtering device after receiving the downlink cellular signal, and transmit the filtered downlink cellular signal to the subsequent receiving link through the second output port, so as to transmit the downlink cellular signal to the transceiver through the subsequent receiving link.

8. The radio frequency front-end module according to claim 7, characterized in that, The first uplink cellular signal is an uplink cellular signal that has met the signal processing requirements after being pre-processed by the transceiver; The signal processing requirements include at least one of spurious processing requirements and coexistence processing requirements.

9. The radio frequency front-end module according to claim 7, characterized in that, The second filtering device is a surface acoustic wave filter.

10. The radio frequency front-end module according to any one of claims 1 to 9, characterized in that, The first signal transmission link is connected to the transceiver through a target power amplifier in the radio frequency front-end module; The target power amplifier is configured to receive the first uplink cellular signal output by the transceiver, perform power amplification processing on the first uplink cellular signal, and then transmit the amplified first uplink cellular signal to the first signal transmission link; The first signal transmission link is configured to transmit the amplified first uplink cellular signal to the antenna module.

11. The radio frequency front-end module according to claim 10, characterized in that, Both the first signal transmission link and the second signal transmission link include a band selection switch, The band selection switch includes multiple signal paths; The band selection switch is configured to conduct the first signal path corresponding to the first uplink cellular signal, so as to use the first signal path to transmit the amplified first uplink cellular signal to the antenna module; And, it is configured to conduct the second signal path corresponding to the downlink cellular signal, so as to use the second signal path to transmit the downlink cellular signal.

12. The radio frequency front-end module according to claim 11, characterized in that, The band selection switch includes a first band selection switch and a second band selection switch. The first band selection switch is connected between the target power amplifier and the second band selection switch, and the second band selection switch is also connected to the antenna module; The first band selection switch is configured to transmit the amplified first uplink cellular signal to the second band selection switch; the second band selection switch is configured to transmit the amplified first uplink cellular signal to the antenna module; The second band selection switch is further configured to receive the downlink cellular signal transmitted by the antenna module.

13. The radio frequency front-end module according to claim 12, wherein, The RF front-end module further includes a multi-path conduction unit, and the multi-path conduction unit is connected to the second band selection switch, one end of the first signal path, and one end of the second signal path; The multi-path conduction unit is configured to adjust the impedance matching of the second band selection switch, the first signal path, and the second signal path, so as to achieve the transmission of the first uplink cellular signal and the reception of the downlink cellular signal.

14. The radio frequency front-end module according to claim 12, wherein, The RF front-end module further includes an output port connected to the first band selection switch and an input port connected to the second band selection switch. Among them, the output port and the input port are connected through a signal line arranged outside the RF front-end module; The first band selection switch is configured to transmit the amplified first uplink cellular signal to the output port, so as to transmit the amplified first uplink cellular signal to the input port through the signal line; The second band selection switch is configured to transmit the amplified first uplink cellular signal input from the input port to the antenna module.

15. The radio frequency front-end module according to claim 12, wherein, The first signal path includes a first direct path arranged in the second band selection switch, and the first direct path connects the first band selection switch and the antenna module; The second band selection switch is configured to transmit the amplified first uplink cellular signal to the antenna module through the first direct path.

16. The radio frequency front-end module according to claim 14, wherein, The first signal path further includes a second direct path disposed in the first frequency band selection switch, and the second direct path connects the target power amplifier and the first direct path in the second frequency band selection switch; The first frequency band selection switch is configured to transmit the first uplink cellular signal after the amplification process to the first direct path in the second frequency band selection switch through the second direct path.

17. The radio frequency front-end module according to any one of claims 1 to 9, wherein, The first communication mode is an FDD communication mode.

18. The radio frequency front-end module according to any one of claims 1 to 9, wherein, The RF front-end module further includes a third signal transmission link; the third signal transmission link is connected to the transceiver through the target power amplifier in the RF front-end module; the third signal transmission link includes a third filtering device; The target power amplifier is configured to receive the third uplink cellular signal of the second communication mode output by the transceiver, perform power amplification processing on the third uplink cellular signal, and transmit the amplified third uplink cellular signal to the third signal transmission link; The third signal transmission link is configured to filter the third uplink cellular signal by using the third filtering device, and then transmit the filtered third uplink cellular signal to the antenna module, so as to transmit the third uplink cellular signal by using the antenna module.

19. The radio frequency front-end module according to claim 18, wherein, The second communication mode is a TDD communication mode.

20. An electronic device, wherein, The electronic device includes the RF front-end module according to any one of claims 1 to 19.

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