Radio frequency system and communication device

Abstract

The invention relates to a radio frequency system and communication equipment, the radio frequency system comprises a radio frequency transceiver and a radio frequency front end module, the radio frequency front end module is connected with the radio frequency transceiver and at least comprises two first transmitting links, two second transmitting links, two third transmitting links and two fourth transmitting links, the first transmitting link, the second transmitting link, the third transmitting link and the fourth transmitting link respectively support transmitting of radio frequency signals of a first frequency band, a second frequency band, a third frequency band and a fourth frequency band in a one-to-one correspondence manner; wherein the radio frequency system supports three target transmitting links to work at the same time, the frequency band modes corresponding to the three target radio frequency signals comprise two FDD mode frequency bands and one TDD mode frequency band, or the frequency band modes corresponding to the three target radio frequency signals comprise two TDD mode frequency bands and one FDD mode frequency band, and the radio frequency system can adapt to various communication scenes. According to the invention, 3TX uplink data transmission with different communication requirements is realized, and the uplink transmission rate can be improved.

Description

Technical Field

[0001] This application relates to the field of radio frequency technology, and in particular, to a radio frequency system and a communication device. Background Art

[0002] With the development of communication networks, technologies have been continuously developed and advanced. In order to enhance the uplink transmission capacity, the communication industry has proposed the super uplink technology (Uplink switching), for example, the 3TX technology; by using the uplink selective transmission function of the terminal, the uplink coverage and rate effects are enhanced.

[0003] 3TX is mainly applied to communication scenarios in the ENDC (5G NSA) or CA state, and its main combination forms are Frequency Division Duplexing (FDD) and Time Division Duplexing (TDD).

[0004] However, in the process of traditional communication devices realizing the simultaneous transmission of uplink data on three transmission channels, the applicable communication scenarios are relatively single, and it is impossible to simultaneously meet the communication requirements of multiple communication scenarios. Summary of the Invention

[0005] Embodiments of this application provide a radio frequency system and a communication device, which can adapt to multiple communication scenarios to realize the 3TX transmission of uplink data for different communication requirements, and can improve its uplink transmission rate.

[0006] In a first aspect, a radio frequency system is provided, including:

[0007] A radio frequency transceiver,

[0008] A radio frequency front-end module, connected to the radio frequency transceiver. The radio frequency front-end module includes at least two first transmission links, two second transmission links, two third transmission links, and two fourth transmission links. Among them, the first transmission link is used to support the transmission of radio frequency signals in the first frequency band, the second transmission link is used to support the transmission of radio frequency signals in the second frequency band, the third transmission link is used to support the transmission of radio frequency signals in the third frequency band; the fourth transmission link is used to support the transmission of radio frequency signals in the fourth frequency band; among them,

[0009] The radio frequency system supports three target transmission links to work simultaneously to support the uplink transmission of three target radio frequency signals; among them, the frequency band modes corresponding to the three target radio frequency signals include two FDD mode frequency bands and one TDD mode frequency band, or the frequency band modes corresponding to the three target radio frequency signals include two TDD mode frequency bands and one FDD mode frequency band;

[0010] The first frequency band, the second frequency band, and the third frequency band may be in FDD mode respectively, the second frequency band, the third frequency band, and the fourth frequency band may be in TDD mode respectively, and the first frequency band, the second frequency band, the third frequency band, and the fourth frequency band are all different.

[0011] In a second aspect, a communication device is provided, including: the aforementioned radio frequency system.

[0012] The above radio frequency system and communication device include a radio frequency transceiver and a radio frequency front-end module. The radio frequency front-end module includes at least two first transmission links, two second transmission links, two third transmission links, and two fourth transmission links. In this way, the radio frequency system can support three target transmission links to work simultaneously to support the simultaneous transmission of three target transmission signals, thereby realizing 3TX uplink communication. In addition, since the radio frequency system is configured with eight transmission links, among the three target transmission links, it can support TDD 2TX and FDD 1TX, or FDD 2TX and TDD 1TX. The radio frequency system can select appropriate target transmission links based on the current communication scenario to improve its uplink transmission rate, and it can adapt to a variety of communication scenarios to realize 3TX for sending uplink data with different communication requirements. Description of the Drawings

[0013] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the 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 drawings can also be obtained based on these drawings.

[0014] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the 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 drawings can also be obtained based on these drawings.

[0015] Figure 1 One of the structural block diagrams of the radio frequency system in an embodiment;

[0016] Figure 2 An application scenario diagram of the radio frequency system in an embodiment;

[0017] Figure 3 Another structural block diagram of the radio frequency system in an embodiment;

[0018] Figure 4 The structural block diagram of the first radio frequency module in an embodiment;

[0019] Figure 5 is the structural block diagram of the first radio frequency module in another embodiment;

[0020] Figure 6 is the structural block diagram of the first radio frequency module in yet another embodiment;

[0021] Figure 7 is the structural block diagram of the second radio frequency module in one embodiment;

[0022] Figure 8 is the structural block diagram of the first radio frequency module in another embodiment;

[0023] Figure 9 is the structural block diagram of the first radio frequency module in yet another embodiment;

[0024] Figure 10 is the third structural block diagram of the radio frequency system in one embodiment;

[0025] Figure 11 is the fourth structural block diagram of the radio frequency system in one embodiment;

[0026] Figure 12 is the structural block diagram of the third radio frequency module in one embodiment;

[0027] Figure 13 is the structural block diagram of the third radio frequency module in another embodiment;

[0028] Figure 14 is the fifth structural block diagram of the radio frequency system in one embodiment;

[0029] Figure 15 is the structural block diagram of the sub - radio frequency front - end module in one embodiment;

[0030] Figure 16 is the sixth structural block diagram of the radio frequency system in one embodiment;

[0031] Figure 17 is the seventh structural block diagram of the radio frequency system in one embodiment;

[0032] Figure 18 is the structural block diagram of a communication device in one embodiment. Detailed implementation manners

[0033] In order to make the objectives, technical solutions and advantages of this application clearer, the following further elaborates on this application in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely used to explain this application and are not used to limit this application.

[0034] It will be appreciated that the terms "first", "second", etc. used in the present application may be used herein to describe various elements, but these elements are not limited by these terms. These terms are only used to distinguish a first element from another element. For example, without departing from the scope of the present application, the first transmission link may be referred to as the second transmission link, and similarly, the second transmission link may be referred to as the first transmission link. Both the first transmission link and the second transmission link are transmission links, but they are not the same transmission link.

[0035] As Figure 1 shown, an embodiment of the present application provides a radio frequency system, which includes a radio frequency transceiver 10 and a radio frequency front-end module 20. Among them, the radio frequency transceiver 10 is used to output radio frequency signals, such as 2G GSM signals, 3G CNMA signals, LTE signals, NR signals, and perform signal processing on radio frequency signals received by one or more antennas. The signal processing includes, but is not limited to, frequency conversion, demodulation, and analog-to-digital conversion, etc. The uplink signal transmitted by the radio frequency transceiver 10 is amplified by a power amplifier and then sent by an antenna.

[0036] The radio frequency front-end module 20 is connected to the radio frequency transceiver 10 and can be used to receive radio frequency signals from the radio frequency transceiver 10, perform uplink processing on them (for example, including but not limited to power amplification processing, filtering processing, etc.), and output them through an antenna to achieve the transmission of the radio frequency signals. In an exemplary embodiment, the radio frequency front-end module 20 can also receive radio frequency signals from the antenna, perform downlink processing on them (for example, including but not limited to low-noise amplification processing, filtering processing, etc.), and then output them to the radio frequency transceiver 10 to achieve the reception of the radio frequency signals.

[0037] The radio frequency front-end module 20 includes at least two first transmission links TX1, two second transmission links TX2, two third transmission links TX3, and two fourth transmission links TX4. Among them, the first transmission link TX1 is used to support the transmission of radio frequency signals in the first frequency band, the second transmission link TX2 is used to support the transmission of radio frequency signals in the second frequency band, the third transmission link TX3 is used to support the transmission of radio frequency signals in the third frequency band; the fourth transmission link TX4 is used to support the transmission of radio frequency signals in the fourth frequency band. For example, each transmission link can be correspondingly connected to an antenna, and after performing power amplification and filtering processing on the radio frequency signals from the radio frequency transceiver 10, it is transmitted to the correspondingly connected antenna to support the transmission of radio frequency signals. In the embodiment of the present application, for the convenience of description, the radio frequency signals in the first frequency band are simply referred to as the first radio frequency signals, the radio frequency signals in the second frequency band are simply referred to as the second radio frequency signals, the radio frequency signals in the third frequency band are simply referred to as the third radio frequency signals, and the radio frequency signals in the fourth frequency band are simply referred to as the fourth radio frequency signals.

[0038] The radio frequency system supports the simultaneous operation of three target transmission links to simultaneously support the uplink transmission of three target radio frequency signals, thereby enabling 3TX uplink communication. Among them, the three target transmission links can be three of the eight transmission links, and each target transmission link is used to support the transmission of a target radio frequency signal.

[0039] Among them, in the first frequency band, the second frequency band, the third frequency band, and the fourth frequency band, each frequency band corresponds to a frequency band mode. Among them, the frequency band mode includes the FDD mode and the TDD mode. Time Division Duplexing (TDD) and Frequency Division Duplexing (FDD) are two main duplex communication technologies. Among them, for time division duplexing TDD, the transceiver shares a radio frequency frequency point (that is, the same frequency), and different time slots are used for the uplink and downlink links to communicate, that is, uplink and downlink transmissions are achieved through time division. For frequency division duplexing FDD, different radio frequency frequency points (that is, two independent frequencies) are used for the transceiver to perform uplink and downlink transmissions respectively. For example, these two frequencies can be symmetric and a certain guard bandwidth is required to avoid interference.

[0040] The frequency band modes corresponding to the three target radio frequency signals include two FDD modes and one TDD mode, that is, 3TX uplink communication supporting two FDD modes and one TDD mode can be enabled.

[0041] Alternatively, the frequency band modes corresponding to the three target radio frequency signals can also include two TDD modes and one FDD mode, that is, 3TX uplink communication supporting two TDD modes and one FDD mode can be enabled.

[0042] The first frequency band, the second frequency band, and the third frequency band can be the FDD mode respectively; the second frequency band, the third frequency band, and the fourth frequency band can be the TDD mode respectively. For example, the first frequency band can be the FDD mode, the second frequency band can include the FDD mode and the TDD mode, the third frequency band can include the FDD mode and the TDD mode, and the fourth frequency band can be the TDD mode. Exemplarily, the first frequency band, the second frequency band, the third frequency band, and the fourth frequency band are all different. In the embodiments of the present application, for the sake of convenience of description, it is taken as an example that the first frequency band can be a low-frequency band, the second frequency band can be a medium-frequency band, the third frequency band can be a high-frequency band, and the fourth frequency band can be an ultra-high-frequency band. The radio frequency system can include a first transmission link for supporting the transmission of low-frequency signals; two second transmission links for supporting the transmission of medium-frequency signals; two third transmission links for supporting the transmission of high-frequency signals; and two fourth transmission links for supporting the transmission of ultra-high-frequency signals.

[0043] In this embodiment, the radio frequency system includes a radio frequency transceiver 10 and a radio frequency front-end module 20. The radio frequency front-end module 20 includes at least two first transmission links TX1, two second transmission links TX2, two third transmission links TX3, and two fourth transmission links TX4. In this way, the radio frequency system can support three target transmission links to work simultaneously to support the simultaneous transmission of three target transmission signals, thereby realizing 3TX uplink communication. In addition, since the radio frequency system is configured with eight transmission links, among the three target transmission links, it can support TDD 2TX and FDD 1TX, or FDD 2TX and TDD 1TX. The radio frequency system can select appropriate target transmission links based on the current communication scenario to improve its uplink transmission rate, and it can adapt to a variety of communication scenarios to realize 3TX transmission of uplink data for different communication requirements.

[0044] In an exemplary embodiment, the radio frequency system can operate in a first communication mode and a second communication mode. The determination of the first communication mode and the second communication mode can be based on whether the distance between the communication device including the radio frequency system and the base station is within a preset distance. When the distance between the communication device and the base station is greater than the preset distance, that is, when the communication device is located at the cell edge, the radio frequency system can operate in the first communication mode; when the distance between the communication device and the base station is less than or equal to the preset distance, that is, when the communication device is located at the cell center, the radio frequency system can operate in the second communication mode. Among them, the preset distance is preset according to the actual situation and stored in the radio frequency system.

[0045] As Figure 2 shown, when the communication device 1 is far from the base station 2 (poor TDD coverage), the radio frequency system operates in the first communication mode to realize FDD(2T)+TDD(1T); when the communication device 1 is close to the base station 2 (good TDD coverage), the radio frequency system operates in the second communication mode to realize FDD(1T)+TDD(2T). Among them, in the first communication mode, the three target transmission links of the first target transmission link group work simultaneously to support the transmission of three target radio frequency signals. The frequency band modes corresponding to the three target radio frequency signals supported by the first target transmission link group include two FDD modes and one TDD mode. It can be understood that the three target transmission links in the first communication mode can be called the first transmission link group. In the first communication mode, the radio frequency system can support 3TX uplink communication of FDD 2TX and TDD 1TX, and preferentially send uplink data through the FDD carrier to ensure that the network has a large coverage range to improve the uplink communication performance of the radio frequency system.

[0046] In the second communication mode, the three target transmission links in the second target transmission link group work simultaneously to support the transmission of three target radio frequency signals. The frequency band modes corresponding to the three target radio frequency signals supported by the second target transmission link group include two TDD modes and one FDD mode. It can be understood that the three target transmission links in the second communication mode can be referred to as the second transmission link group. In the second communication mode, its radio frequency system can support 3TX uplink communication of TDD 2TX and FDD 1TX, which can improve the uplink transmission rate.

[0047] In an exemplary embodiment, at most two of the three target transmission links support radio frequency signals with the same frequency band.

[0048] Exemplarily, the frequency bands of the radio frequency signals supported by each of the three target transmission links are different. In the first communication mode, among the three target transmission links, the supported frequency bands can include any three of the first frequency band, the second frequency band, the third frequency band, and the fourth frequency band.

[0049] In an exemplary embodiment, in the first communication mode, the combination of the three target radio frequency signals can be as shown in Table 1.

[0050] Table 1 is the combination of the three target radio frequency signals in the first communication mode

[0051]

[0052] In an exemplary embodiment, in the second communication mode, the combination of the three target radio frequency signals can be as shown in Table 1.

[0053] Table 2 is the combination of the three target radio frequency signals in the second communication mode

[0054]

[0055] It should be noted that in the embodiments of the present application, the combination methods shown in Table 1 and Table 2 are only for illustrative purposes, and the combination methods are not limited to the above examples.

[0056] In an exemplary embodiment, among the three target transmission links, two of the target transmission links support radio frequency signals with the same frequency band.

[0057] In an exemplary embodiment, in the first communication mode, the combination of the three target radio frequency signals can be as shown in Table 3.

[0058] Table 3 is the combination of the three target radio frequency signals in the first communication mode

[0059]

[0060] In an exemplary embodiment, in the second communication mode, the combination of three target radio frequency signals can be as shown in Table 4.

[0061] Table 4 shows the combination of three target radio frequency signals in the second communication mode

[0062]

[0063] It should be noted that in the embodiments of the present application, the combination methods shown in Table 3 and Table 4 are only for illustrative purposes, and the combination methods are not limited to the above examples.

[0064] In the embodiments of the present application, the radio frequency system can support 3TX uplink communication with multiple different frequency band combinations, and can be applicable to different communication scenarios. In each communication scenario, three target transmission links adapted to the current communication scenario can be selected to improve its uplink transmission rate, and thus the uplink communication performance of the radio frequency system in various communication scenarios can be improved.

[0065] As Figure 3 shown, in an exemplary embodiment, the radio frequency front-end module 20 includes a first radio frequency front-end module 210, a second radio frequency front-end module 220, and a third radio frequency front-end module 230. Among them, the first radio frequency front-end module 210, the second radio frequency front-end module 220, and the third radio frequency front-end module 230 can be radio frequency front-end devices respectively. Optionally, the first radio frequency front-end module 210, the second radio frequency front-end module 220, and the third radio frequency front-end module 230 can also include multiple radio frequency front-end devices. In the embodiments of the present application, the radio frequency front-end devices include but are not limited to MMPA devices, PA Mid devices, L-PA Mid devices, etc.

[0066] The first radio frequency front-end module 210 is connected to the radio frequency transceiver 10, and the first radio frequency front-end module 210 includes at least two first transmission links TX1 and a second transmission link TX2.

[0067] The second radio frequency front-end module 220 is connected to the radio frequency transceiver 10, and the second radio frequency front-end module 220 includes at least a second transmission link TX2 and two third transmission links TX3.

[0068] The third radio frequency front-end module 230 is connected to the radio frequency transceiver 10, and the second radio frequency front-end module 220 includes at least two fourth transmission links TX4.

[0069] Please continue to refer to Figure 3, in an exemplary embodiment, the first radio frequency front-end module 210 and the second radio frequency front-end module 220 are taken as radio frequency packaging devices for illustration. Among them, the first radio frequency front-end module 210 may be a first radio frequency front-end device, such as a first PA Mid device, and the second radio frequency front-end module 220 may be a second radio frequency front-end device, such as a second PA Mid device.

[0070] It can be understood that the first radio frequency front-end device and the second radio frequency front-end device may each be configured with at least three transmission links. Among them, the first radio frequency front-end device is equipped with two first transmission links TX1 and one second transmission link TX2. Each first transmission link TX1 can support the transmission of a first radio frequency signal. The second transmission link TX2 can support the transmission of a second radio frequency signal. That is, the first radio frequency front-end device can support the transmission of two first radio frequency signals and one second radio frequency signal.

[0071] In an exemplary embodiment, among the three transmission links in the first radio frequency front-end device, two transmission links can work simultaneously to support the uplink transmission of two radio frequency signals. Optionally, the three transmission links in the first radio frequency front-end device can work simultaneously to support the uplink transmission of three radio frequency signals. Optionally, the three transmission links in the first radio frequency front-end device can work in a time-division manner to support the time-division uplink transmission of three radio frequency signals.

[0072] The second radio frequency front-end device is equipped with one second transmission link TX2 and two third transmission links TX3. Each third transmission link TX3 can support the transmission of a third radio frequency signal. That is, the second radio frequency front-end device can support the transmission of one second radio frequency signal and two third radio frequency signals. Among the three transmission links in the second radio frequency front-end device, two transmission links can work simultaneously to support the uplink transmission of two radio frequency signals. Optionally, the three transmission links in the second radio frequency front-end device can work simultaneously to support the uplink transmission of three radio frequency signals. Optionally, the three transmission links in the second radio frequency front-end device can work in a time-division manner to support the time-division uplink transmission of three radio frequency signals.

[0073] In this embodiment, the first radio frequency front-end module 210 and the second radio frequency front-end module 220 can be divided into radio frequency front-end devices. Each radio frequency front-end device is configured with three transmission links to support the transmission of radio frequency signals in two different frequency bands. In this way, by setting two radio frequency front-end devices, the integration degree of the radio frequency front-end devices can be improved, the occupied space can be reduced, and the cost can also be reduced.

[0074] Such as Figure 3 and Figure 4As shown, in an exemplary embodiment, for the sake of convenience of description, the first radio frequency front-end module 210 (e.g., the first radio frequency front-end device) is described with the first frequency band as the low-frequency band and the second frequency band as the intermediate-frequency band as an example for its specific structure.

[0075] The first radio frequency front-end module 210 is configured with a plurality of first input ports (e.g., 101, 102, 103) for connecting to the radio frequency transceiver 10, and a plurality of first antenna ports (e.g., 104, 105, 106) for connecting to the antenna. Exemplarily, the first radio frequency front-end module 210 may be configured with at least three first input ports for connecting to the radio frequency transceiver 10, and at least two first antenna ports for connecting to the first antenna group. Among them, each first antenna port can be correspondingly connected to an antenna. It should be noted that each port configured in the first radio frequency front-end module 210 can be understood as the pin terminal of this radio frequency front-end device.

[0076] The first radio frequency front-end module 210 includes a first transmitting unit 211 and a second transmitting unit 212. Among them, the first transmitting unit 211 includes two first transmitting links TX1. The input end of each first transmitting link TX1 is connected to a first input port, and the output end of each first transmitting link TX1 is connected to a first antenna port.

[0077] Exemplarily, the first input ports connected by the two first transmitting links TX are different, and the two first antenna ports corresponding to the connections are also different. For example, a first transmitting link TX1 can be respectively connected to the first input port 101 and the first antenna port 104, and another first transmitting link TX1 can be respectively connected to the first input port 102 and the first antenna port 105. In this way, the two first transmitting links TX1 can work simultaneously to support the transmission of radio frequency signals in the low-frequency band of the dual frequency band. Optionally, the two first transmitting links TX can also be switched to connect to the first antenna port 104 and the first antenna port 105.

[0078] Among them, the two first transmission links TX1 can respectively support the low-frequency bands of 4G and 5G systems. One of the two first transmission links TX1 is also used to support the low-frequency band of 3G system, and the other of the two first transmission links TX1 is also used to support the low-frequency band of 2G system. For example, one of the first transmission links TX1 can be used to support the low-frequency bands of 3G, 4G and 5G systems, and the other first transmission link TX12 can be used to support the low-frequency bands of 2G, 4G and 5G systems. Exemplarily, the low-frequency bands of 4G system include but are not limited to B8, B12, B20, B26, B28A, etc. The low-frequency band of 2G system includes but is not limited to GSM900MHz. It can be understood that the first transmission link TX12 can not only support GSM 900MHz, but also support the low-frequency bands such as B8, B12, B20, B26, B28A and the corresponding 5G NR, etc. Among them, the low-frequency bands of 4G and 5G systems are in FDD mode.

[0079] In an exemplary embodiment, the number of sub-bands in the low-frequency bands supported by the first transmission link TX1 and the second transmission link TX2 can be one or multiple. The frequency bands of the low-frequency bands include but are not limited to B8, B12, B20, B26, B28A, etc. For example, the first transmission link TX1 can support multiple sub-bands. The first transmission link TX12 can not only support GSM900MHz, but also include at least one sub-band in the low-frequency bands of 4G and 5G systems. In the embodiments of the present application, the number of sub-bands supported by the first transmission link TX1 and the first transmission link TX12 is not limited.

[0080] The second transmitting unit 212 includes a second transmission link TX2. Among them, the input end of the second transmission link TX2 is connected to the other first input port 103, and the output end of the second transmission link TX2 is connected to the other first antenna port 106. In the embodiments of the present application, the second transmission link TX2 in the first radio frequency front-end module 210 can be used to support the intermediate-frequency bands of 2G, 4G and 5G systems. Exemplarily, the intermediate-frequency bands of 4G system include but are not limited to B1, B3, B25, B39, B34, etc. The intermediate-frequency band of 2G system includes but is not limited to GSM 1800MHz. It can be understood that the second transmission link TX21 can not only support GSM1800MHz, but also support at least one sub-band in the intermediate-frequency bands of 4G and 5G systems, such as at least one of B1, B3, B25, B39, B34.

[0081] In this embodiment, relative to the related art which has only one low-frequency band transmission link for 4G and 5G standards, the first RF front-end device can support not only power amplification of low-frequency signals of 2G standard, but also power amplification of medium- and low-frequency signals of 4G and 5G standards; the second transmission link can not only support power amplification of medium-frequency signals of 2G standard, but also power amplification of medium-frequency signals of 4G and 5G standards, thereby forming two first transmission links supporting low-frequency signals and a second transmission link supporting medium-frequency signals, thereby avoiding the use of two RF front-end devices to form two first transmission links, thereby improving the integration of the RF system and reducing costs.

[0082] like Figure 4 As shown, in an exemplary embodiment, the first transmitting unit 211 includes: a first power amplifier 2111, a first switch 2112, a first filtering unit 2113, a second switch 2114, a second power amplifier, and a second filtering unit 2116.

[0083] The input end of the first power amplifier 2111 is connected to a first input port 101, the output end of the first power amplifier 2111 is connected to a first end of the first switch 2112, multiple first ends of the first switch 2112 are respectively connected to multiple first ends of the first filtering unit 2113, multiple second ends of the first filtering unit 2113 are respectively connected to multiple second ends of the second switch 2114, and two first ends of the second switch 2114 are respectively connected to two first antenna ports 104 and 105. The first power amplifier 2111 is connected to a first antenna port 104 via the first switch 2112, the first filtering unit 2113, and the second switch 2114 to form a first transmission link TX1.

[0084] In the embodiment of the present application, the number of the second terminals of the first switch 2112 is greater than or equal to the number of sub-bands supported by the first transmission link TX1. Figure 5 As shown, exemplarily, the first filtering unit 2113 may include at least one first filter. If the first filtering unit 2113 includes multiple first filters, each of the first filters allows different sub-bands of RF signals to pass through. Exemplarily, the first filtering unit 2113 may include 5 first filters, such as a B8 filter, a B12 filter, a B20 filter, a B26 filter, and a B28A filter. The first end of each first filter may be connected to a second end of the first switch 2112, and the second end of each first filter may be connected to a second end of the second switch 2114. In an exemplary embodiment, if the first RF front-end module 210 can support the reception of RF signals, its first filter may be a first duplexer.

[0085] Optionally, if the first transmission link TX1 only supports low-frequency signals in one sub-band, the first switch 2112 can be omitted.

[0086] The input end of the second power amplifier 2115 is connected to another first input port 102, the output end of the second power amplifier 2115 is connected to the first end of the second filtering unit 2116, and the second end of the second filtering unit 2116 is correspondingly connected to the other second end of the second switch 2114. Among them, the second power amplifier 2115 is connected to a first antenna port 105 through the second filtering unit 2116 and the second switch 2114 to form another first transmission link TX12. It can be understood that the second power amplifier 2115 in the embodiment of the present application can simultaneously support the power amplification of low-frequency bands of 2G, 4G, and 5G systems. That is to say, the second power amplifier 2115 can not only support the power amplification of GMS LB, but also support the power amplification of radio frequency signals in the low-frequency bands of 4G / 5G systems to support multi-mode power amplification, and further can achieve the power amplification of radio frequency signals in low-frequency bands such as 2G GSM, 4G, and 5G.

[0087] In an exemplary embodiment, the second filtering unit 2116 can allow low-frequency bands of 2G, 4G, and 5G systems to pass through, while filtering out radio frequency signals other than the low-frequency bands of 2G, 4G, and 5G systems. Exemplarily, the second filtering unit 2116 can include a second filter. In an exemplary embodiment, if the first radio frequency front-end module 210 can support the reception of radio frequency signals, the second filter can be a second duplexer.

[0088] In an exemplary embodiment, the first switch 2112 can be a single-pole multi-throw switch. The P end of the single-pole multi-throw switch is used as the first end of the first switch 2112 and is connected to the first power amplifier 2111. The T end of the single-pole multi-throw switch is used as the second end of the first switch 2112 and is connected to the first filtering unit 2113. The first switch 2112 can be used to select and switch the path between the first power amplifier 2111 and any first filter.

[0089] In an exemplary embodiment, the second switch 2114 can be a double-pole multi-throw switch. The P end of the double-pole multi-throw switch is used as the first end of the second switch 2114 and can be respectively connected to two first antenna ports 104 and 105. The T end of the double-pole multi-throw switch is used as the second end of the second switch 2114 and is respectively connected to the first filtering unit 2113 and the second filtering unit 2116. The second switch 2114 can be used to select and switch the paths between the first power amplifier 2111 and the second power amplifier 2115 and any first antenna port respectively, so as to realize the switching of the two first transmission links TX1 between the two first antenna ports 104 and 105.

[0090] In an exemplary embodiment, different from the foregoing embodiments, in this embodiment, the second switch 2114 in the first transmitting unit 211 may be a single-pole multi-throw switch, and the first end of the second switch 2114 is connected to a first antenna port 104. The second switch 2114 can be used to select and conduct the path between any first filter and the first antenna port 104. The second filtering unit 2116 in the first transmitting link TX1 may be directly connected to the first antenna port 105.

[0091] In this embodiment, the second power amplifier 2115 can be directly connected to the first antenna port 105. The second switch 2114 for antenna switching is omitted in the first transmitting link TX1 where the second power amplifier 2115 is located, which can reduce the loss of the first transmitting link TX1 to improve the performance of transmitting radio frequency signals, and thus can improve the communication performance of the communication system.

[0092] Please continue to refer to Figure 4 and Figure 5 In an exemplary embodiment, the second transmitting unit 212 includes: a third power amplifier 2121 and a third filtering unit 2122. The input end of the third power amplifier 2121 is connected to another first input port 103, the output end of the third power amplifier 2121 is connected to the first end of the third filtering unit 2122, and the second end of the third filtering unit 2122 is correspondingly connected to another first antenna port 107. Among them, the third power amplifier 2121 is connected to another first antenna port 106 through the third filtering unit 2122 to form a second transmitting link TX2.

[0093] Among them, the third filtering unit 2122 may include a third filter to allow radio frequency signals in the second frequency band to pass through and filter out signals other than radio frequency signals in the second frequency band. Exemplarily, the third filter may be a band-pass filter, etc.

[0094] As Figure 6 shown, in an exemplary embodiment, the first radio frequency front-end module 210 can also support dual-path reception of radio frequency signals in the first frequency band. Among them, the first radio frequency front-end module 210 is also configured with a plurality of first output ports (for example, 107, 108) for connecting to the radio frequency transceiver 10.

[0095] The first radio frequency front-end module 210 further includes a first receiving unit 213. Among them, the first receiving unit 213 may include two first receiving branches RX1. Each first receiving branch RX1 is used to support low-noise amplification of radio frequency signals in the first frequency band. Each first receiving branch RX1 is respectively connected to the first filtering unit 2113 and the second filtering unit 2116, and the output end of each first receiving branch RX1 is connected to a first output port. Each first receiving branch RX1 can be connected to the first transmitting unit 211 to form a first receiving link.

[0096] Please continue to refer to Figure 5 and Figure 6 , in an exemplary embodiment, the first antenna port is connected to one of the first receiving branches through the second switch 2114 and the first filtering unit 2113 to form a first receiving link. It can be understood that the first receiving branch can reuse the first filtering unit 2113 and the second switch 2114 in the first transmitting unit 211 to form this first receiving link.

[0097] The first antenna port is connected to the other first receiving branch through the second switch 2114 and the second filtering unit 2116 to form another first receiving link. It can be understood that the other first receiving branch can reuse the second filtering unit 2116 and the second switch 2114 in the first transmitting unit 211 to form another first receiving link.

[0098] The first antenna port is connected to the other first receiving branch through the second filtering unit 2116 to form another first receiving link. It can be understood that the other first receiving branch can reuse the second filtering unit 2116 in the first transmitting unit 211 to form another first receiving link.

[0099] The first receiving unit 213 includes a first low-noise amplifier 2131, a second low-noise amplifier 2132, and a first receiving switch 2133. Among them, the first low-noise amplifier 2131 and the second low-noise amplifier 2132 can perform low-noise amplification processing on the received radio frequency signals. Among them, the first receiving switch 2133 may include two first ends and multiple second ends. The multiple second ends of the first receiving switch 2133 are respectively connected to the first filter in the first filtering unit 2113 and the second filter in the second filtering unit 2122. For example, the multiple second ends of the first receiving switch 2133 can be respectively connected to the other first ends of the first duplexer and the second duplexer, the two first ends of the first receiving switch 2133 are respectively connected to the input ends of the first low-noise amplifier 2131 and the second low-noise amplifier 2132, and the output ends of the first low-noise amplifier 2131 and the second low-noise amplifier 2132 are respectively connected to two first output ports.

[0100] Among them, the first receiving switch 2133 can be used to select and conduct the path between any duplexer (the first duplexer or the second duplexer) and any low-noise amplifier (the first low-noise amplifier 2131, the second low-noise amplifier 2132). In this way, the first receiving unit 213 can be connected to the first transmitting unit 211 to form two first receiving links to support the dual-path reception of radio frequency signals in the first frequency band.

[0101] Exemplarily, the first receiving unit 213 may further include a switch 2134, and the switch 2134 can be a double-pole double-throw switch. The two first ends of the switch 2134 are respectively and correspondingly connected to the two first output ports 107 and 108, and the two second ends of the switch 2134 are respectively and correspondingly connected to the output ends of the first low-noise amplifier 2131 and the second low-noise amplifier 2132.

[0102] The radio frequency front-end device in this embodiment can not only support the dual-path transmission of radio frequency signals in the first frequency band and the single-path transmission of radio frequency signals in the second frequency band, but also support the dual-path reception of radio frequency signals in the first frequency band. It has high integration, low cost, and can also improve the transceiver performance of radio frequency signals in the first frequency band.

[0103] In an exemplary embodiment, the first radio frequency front-end module is further configured with a first coupling port (not shown in the figure). The first radio frequency front-end module further includes a first coupling circuit. The first coupling circuit is arranged on the path between the second switch and the first antenna port and is used to couple the radio frequency signal on this path to be fed back to the radio frequency transceiver through the first coupling port to detect the power of the radio frequency signal.

[0104] Please continue to refer to Figure 3 and Figure 7 , in an exemplary embodiment, for the sake of easy explanation, taking the second frequency band as the intermediate frequency band and the third frequency band as the high frequency band as an example, the specific structure of the second radio frequency front-end module 220 (for example, the second radio frequency front-end device) is described.

[0105] The second radio frequency front-end module 220 is configured with a plurality of second input ports (such as 111, 112, 113, etc.) for connecting to the radio frequency transceiver 10, and a plurality of second antenna ports (such as 114, 115, 116, etc.) for connecting to the antenna. Exemplarily, the second radio frequency front-end module 220 can be configured with at least three second input ports for connecting to the radio frequency transceiver 10 and at least two second antenna ports for connecting to the second antenna group. Among them, each second antenna port can be correspondingly connected to an antenna. It should be noted that each port configured in the second radio frequency front-end module 220 can be understood as the pin terminal of this radio frequency front-end device.

[0106] The second radio frequency front-end module 220 includes: a third transmitting unit 221, a fourth transmitting unit 222, and a first switching unit 223. Among them, the input end of the third transmitting unit 221 is respectively connected to a second input port 111 correspondingly. The third transmitting unit 221 is used to support power amplification, filtering processing, etc. of radio frequency signals in the second frequency band.

[0107] Two input ends of the fourth transmitting unit 222 are connected to two other second input ports 112 and 113. The fourth transmitting unit 222 is used to support power amplification, filtering processing, etc. of dual-channel radio frequency signals in the third frequency band.

[0108] Multiple first ends of the first switching unit 223 are respectively connected to the output ends of the third transmitting unit 221 and the fourth transmitting unit 222 correspondingly. Multiple second ends of the first switching unit 223 are respectively connected to multiple second antenna ports. Among them, the first switching unit 223 can be used to select and conduct the paths between the third transmitting unit 221, the fourth transmitting unit 222 and any second antenna port respectively.

[0109] The third transmitting unit 221 and the first switching unit 223 form a second transmitting link. Among them, the second transmitting link TX2 can be used to support the transmitting processing of radio frequency signals in the middle frequency band in TDD mode and FDD mode.

[0110] The fourth transmitting unit 222 and the first switching unit 223 form two third transmitting links TX3. Exemplarily, the second input ports connected by the two third transmitting links TX3 are different, and the two second antenna ports corresponding to the connections are also different. For example, one of the third transmitting links TX31 can be respectively connected to the second input port 112 and the second antenna port 114, and the other third transmitting link TX3 can be respectively connected to the second input port 113 and the second antenna port 115. In this way, the two third transmitting links TX3 can work simultaneously to support the transmission of radio frequency signals in the high frequency band of dual bands. Optionally, the two third transmitting links TX3 can also be switched to connect to the second antenna port 114 and the second antenna port 115.

[0111] One of the third transmitting links TX3 can support the TDD mode. For example, it can perform power amplification and filtering processing on high-frequency signals such as B40 (or N40), B41 (or N41), etc., and then support the transmitting processing of them. The other second transmitting link TX2 can support the TDD mode and the FDD mode. For example, it can perform power amplification and filtering processing on high-frequency signals such as B7 (or N7), B41 (or N41), etc., and then support the transmitting processing of them.

[0112] In the embodiment of the present application, both the third transmitting unit 221 and the fourth transmitting unit 222 can reuse the first switching unit 223 to correspondingly form a second transmitting link TX2 and two third transmitting links TX3. Among them, the second transmitting link TX2 can support the transmission of radio frequency signals in the mid-frequency band of the TDD mode and the FDD mode. One third transmitting link TX3 can support the transmission of radio frequency signals in the high-frequency band of the TDD mode, and the other third transmitting link TX3 can support the transmission of radio frequency signals in the high-frequency band of the TDD mode and the FDD mode. The second radio frequency front-end device in this embodiment can support the transmission of radio frequency signals in the mid-high frequency band of the TDD mode and the FDD mode, which expands the frequency band mode of the radio frequency signals in the mid-high frequency, and further can expand the combination mode of the radio frequency system supporting 3TX uplink communication to be applicable to different communication scenarios, thereby improving the communication performance of the radio frequency system.

[0113] As Figure 7 shown, in an exemplary embodiment, the third transmitting unit 221 includes: a fourth power amplifier 2211, a third switch 2212, and a fourth filtering unit 2213.

[0114] Among them, the input end of the fourth power amplifier 2211 is connected to a second input port 111, the output end of the fourth power amplifier 2211 is connected to the first end of the third switch 2212, the multiple second ends of the third switch 2212 are respectively and correspondingly connected to the multiple first ends of the fourth filtering unit 2213, the multiple second ends of the fourth filtering unit 2213 are respectively and correspondingly connected to the multiple first ends of the first switching unit 223, and the multiple second ends of the first switching unit 223 are respectively and correspondingly connected to multiple second antenna ports 114, 15. The fourth power amplifier 2211 is connected to the first switching unit 223 through the third switch 2212 and the fourth filtering unit 2213 to form a second transmitting link TX2 for supporting the mid-frequency band of the TDD mode and the FDD mode.

[0115] For the convenience of description, as Figure 8 shown, taking the second transmitting link TX2 can support B1, B3, B25, B34, B39 as an example for illustration. Among them, B1, B3, B25 are in the FDD mode, and B34, B39 are in the TDD mode. The fourth filtering unit 2213 can include multiple fourth filters. Among them, each fourth filter can be a medium-pass filter, and only the radio frequency signals of the corresponding frequency band are allowed to pass through. Exemplarily, the multiple fourth filters included in the fourth filtering unit 2213 can be set based on the frequency band mode of the corresponding frequency band. In the embodiment of the present application, the specific number and specific form of the fourth filter are not limited, nor are they limited to each fourth filter as Figure 8 shown.

[0116] The fourth transmitting unit 222 includes: a fifth power amplifier 2221, a sixth power amplifier 2222, a fourth switch 2223, a fifth switch 2224, a fifth filtering unit 2225, and a sixth filtering unit 2226.

[0117] The input end of the fifth power amplifier 2221 is connected to another second input port 112. The output end of the fifth power amplifier 2221 is connected to the first end of the fourth switch 2223. The multiple second ends of the fourth switch 2223 are respectively and correspondingly connected to the multiple first ends of the fifth filtering unit 2225. The multiple second ends of the fifth filtering unit 2225 are respectively and correspondingly connected to the multiple first ends of the first switching unit 223. The multiple second ends of the first switching unit 223 are respectively connected to multiple second antenna ports. The fifth power amplifier 2221 is connected to a second antenna port 116 through the fourth switch 2223, the fifth filtering unit 2225, and the first switching unit 223 to form another third transmitting link TX3 for supporting the high-frequency band of the TDD mode.

[0118] For ease of description, it is exemplified that the third transmitting link TX3 can support B7 and B41. B7 and B41 are in the TDD mode. The fifth filtering unit 2225 can include two fifth filters. One of the fifth filters can allow the radio frequency signal of the B7 band to pass through, and the other fifth filter can allow the radio frequency signal of the B41 band to pass through. It should be noted that in this embodiment, the specific bands that the third transmitting link TX3 can support are not limited to B7 and B41 exemplified above. The multiple fifth filters included in the fifth filtering unit 2225 can be set based on the band mode of the corresponding band. In the embodiments of the present application, the specific number and specific form of the fourth filter are not limited, nor are they limited to each fifth filter as Figure 8 shown.

[0119] The input end of the sixth power amplifier 2222 is connected to yet another second input port 113. The output end of the sixth power amplifier 2222 is connected to the first end of the fifth switch 2224. The multiple second ends of the fifth switch 2224 are respectively and correspondingly connected to the multiple first ends of the sixth filtering unit 2226. The multiple second ends of the sixth filtering unit 2226 are respectively and correspondingly connected to the multiple first ends of the first switching unit 223. The multiple second ends of the first switching unit 223 are respectively connected to multiple second antenna ports. The sixth power amplifier 2222 is connected to a second antenna port 114 or 115 through the fifth switch 2224, the sixth filtering unit 2226, and the first switching unit 223 to form another third transmitting link TX3 for supporting the high-frequency bands of the FDD and TDD modes.

[0120] For ease of explanation, it is exemplified that the third transmission link TX3 can support B40 and B41. B40 is in the FDD mode, and B41 is in the TDD mode. The sixth filtering unit 2226 can include two sixth filters. One of the sixth filters can allow radio frequency signals in the B40 frequency band to pass through, and the other sixth filter can allow radio frequency signals in the B41 frequency band to pass through. It should be noted that in this embodiment, the specific frequency bands that the third transmission link TX3 can support are not limited to B40 and B41 exemplified above. The multiple sixth filters included in the sixth filtering unit 2226 can be set based on the frequency band modes of the corresponding frequency bands. In the embodiments of the present application, the specific number and specific form of the sixth filters are not limited, nor are they limited to each sixth filter as shown in Figure 8 shown. As shown in Figure 8 the second radio frequency front-end device is only an example, and this embodiment is not limited thereto.

[0121] In the embodiments of the present application, the second radio frequency front-end module can be configured with a second transmission link TX2 and two third transmission links TX3. Among them, the second transmission link TX2 can support the transmission of intermediate frequency radio frequency signals (for example, B1, B3, B25, B34, B39) in the TDD mode and the FDD mode. One third transmission link TX3 can support the transmission of high-frequency radio frequency signals (for example, B7&B41, or, N7&N41) in the TDD mode. The other third transmission link TX3 can support the transmission of high-frequency radio frequency signals (for example, B40&B41, or, N40&N41) in the TDD mode and the FDD mode. The second radio frequency front-end device in this embodiment can support the transmission of radio frequency signals in the medium and high frequency bands in the TDD mode and the FDD mode, which expands the frequency band modes of the medium and high frequency radio frequency signals, and further expands the combination modes of the radio frequency system supporting 3TX uplink communication to be applicable to different communication scenarios, thereby improving the communication performance of the radio frequency system.

[0122] Please continue to refer to Figure 8 , in an exemplary embodiment, the second radio frequency front-end module 220 is further configured with a plurality of third receiving links to support the reception of second radio frequency signals and third radio frequency signals. Among them, the second radio frequency front-end module 220 is configured with a plurality of second output ports (for example, 116, 117, etc.) for connecting to the radio frequency transceiver 10, and the output end of each third receiving link is connected to a second output port.

[0123] The second radio frequency front-end module 220 further includes a second receiving unit 224. The second receiving unit 224 includes at least two second receiving branches RX2 and two third receiving branches RX3. Among them, each second receiving branch RX2 is used to support the low-noise amplification of radio frequency signals in the second frequency band; each third receiving branch RX3 is used to support the low-noise amplification of radio frequency signals in the third frequency band.

[0124] In an exemplary embodiment, the second receiving unit 224 may include a multiplexer switch 2241, at least one third low-noise amplifier 2242, and at least one fourth low-noise amplifier 2243. Among them, the output terminals of each third low-noise amplifier 2242 and fourth low-noise amplifier 2243 are correspondingly connected to a plurality of first terminals of the multiplexer switch 2241. A plurality of second terminals of the multiplexer switch 2241 are respectively connected to a plurality of second output ports. The multiplexer switch 2241 can be used to selectively conduct a path between any third low-noise amplifier 2242 or fourth low-noise amplifier 2243 and any second output port. Each third low-noise amplifier 2242 includes a plurality of input terminals. Each input terminal of each third low-noise amplifier 2242 can be connected to any fourth filter for supporting low-noise amplification processing of intermediate-frequency band radio frequency signals. Each fourth low-noise amplifier 2243 includes a plurality of input terminals. Each input terminal of each fourth low-noise amplifier 2243 can be connected to any fifth filter for supporting low-noise amplification processing of high-frequency band radio frequency signals.

[0125] The second antenna port is connected to one of the second receiving branches (for example, a third low-noise amplifier 2242) through the first switching unit 223 and the third filtering unit 2213 to form a second receiving link.

[0126] The second antenna port is connected to another of the second receiving branches (for example, another third low-noise amplifier 2242) through the first switching unit 223 and the second filtering unit 2116 in the first radio frequency front-end module 210 to form another second receiving link.

[0127] The second antenna port is connected to one of the third receiving branches (for example, a fourth low-noise amplifier 2243) through the first switching unit 223 and the fifth filtering unit 2225 to form a third receiving link.

[0128] The second antenna port is connected to another of the third receiving branches (for example, another fourth low-noise amplifier 2243) through the first switching unit 223 and the fifth filtering unit 2225 to form another third receiving link.

[0129] It should be noted that the second antenna ports connected by each second receiving link are different, the second antenna ports connected by each third receiving link are different, the fourth filters on each second receiving link are also different, and the fifth filters and sixth filters on each third receiving link are also different.

[0130] The RF front-end device in this embodiment can not only support the dual-path transmission of the third RF signal and the single-path transmission of the second RF signal, but also support the dual-path reception of the second RF signal and the third RF signal. It has high integration, low cost, and can also improve the transceiver performance of the second RF signal and the third RF signal.

[0131] Please continue to refer to Figure 8 , in an exemplary embodiment, the second RF front-end module 220 is further configured with a plurality of auxiliary ports (for example, TXR1~m, MB_TX_OUT, HB_TRX_AUX, HB_LAN_IN, MB_LAN_IN, etc.). The auxiliary ports can be used to connect to an antenna or other RF front-end modules. Each auxiliary port can be connected to at least one switch (for example, the third switch 2212, the fourth switch 2223, the fifth switch 2224) in the second RF front-end module 220, and can also be connected to the first switch unit 223 in the second RF front-end module 220. By setting the auxiliary ports, more RF terminals can be provided for the second RF front-end module 220 to expand the functions of the RF system.

[0132] Please continue to refer to Figure 8 , in an exemplary embodiment, the second RF front-end module is further configured with second coupling ports 131 and 132. The second RF front-end module 220 further includes a second coupling circuit 225. The second coupling circuit 225 is disposed on the path between the first switch unit 223 and the first antenna ports 114 and 115 for coupling the RF signal on the path to be fed back to the RF transceiver 10 through the second coupling ports 131 and 132 to detect the forward power and reverse power of the RF signal.

[0133] As Figure 9 shown, in an exemplary embodiment, the second transmitting unit 212 in the first RF front-end module 210 further includes a third duplexer 2123. Among them, the input end of the third power amplifier 2121 is connected to a first input port, the output end of the third power amplifier 2121 is connected to the first end of the third duplexer 2123, the second end of the third duplexer 2123 is connected to the second receiving link of the second RF front-end module 220, and the common end of the third duplexer 2123 is connected to another first antenna port. It can be understood that a second receiving link in the second RF front-end module 220 and the second transmitting link TX2 in the first RF front-end module 210 share the same duplexer (for example, the third duplexer 2123). As Figure 10 shown, the second antenna port is connected to one of the third low-noise amplifiers 2242 through the first switch unit 223 and the third duplexer 2123 in the first RF front-end module 210 to form a second receiving link.

[0134] In this embodiment, by integrating the third duplexer 2123 on the second receiving link into the first RF front-end module, the integration level of the RF system can be further improved.

[0135] In an exemplary embodiment, the third duplexer 2123 in the second RF front-end module 220 can be external, as Figure 11 shown. Among them, the second antenna port is connected to one of the third low-noise amplifiers 2242 through the first switch unit 223 and the third duplexer 2123 to form a second receiving link.

[0136] As Figure 12 shown, in an exemplary embodiment, the third RF front-end module 230 is an RF packaging device. For the sake of convenience of description, the fourth frequency band is taken as the ultra-high frequency band as an example to illustrate the specific structure of the third RF front-end module 230 (for example, the third RF front-end device).

[0137] The third RF front-end module 230 is configured with a plurality of third input ports (such as 141, 142) for connecting to the RF transceiver 10, and a plurality of third antenna ports (such as 143, 144) for connecting to the antenna.

[0138] The third RF front-end module 230 includes: a seventh power amplifier 2301, an eighth power amplifier 2302, a seventh filter 2303, and an eighth filter 2304. Among them, the input end of the seventh power amplifier 2301 is connected to a third input port 141, and the output end of the seventh power amplifier 2301 is connected to a third antenna port 143 through the seventh filter 2303 to form a fourth transmission link TX4. The input end of the eighth power amplifier 2302 is connected to another third input port 142, and the output end of the eighth power amplifier 2302 is connected to another third antenna port 144 through the eighth filter 2304 to form another fourth transmission link TX4.

[0139] In an exemplary embodiment, the fourth frequency band includes at least one of N77 and N79. It should be noted that the frequency bands supported by the two fourth transmission links can be the same or different, and thus can support the dual-path transmission of ultra-high frequency signals.

[0140] Exemplarily, the fourth frequency band can be the N77 frequency band.

[0141] Exemplarily, the fourth frequency band can be the N79 frequency band.

[0142] Exemplarily, the fourth frequency band may include N77 and N79 frequency bands. If the fourth frequency band includes N77 and N79 dual frequency bands, its seventh filter 2303 and eighth filter 2304 can also filter out signals other than N77 and N79 frequency bands to allow N77 and N79 frequency band signals to pass through. The fourth frequency band may include N77 and N79 frequency bands, which can increase the bandwidth supporting ultra-high frequency signals to improve the uplink transmission ability of ultra-high frequency signals. At the same time, more combinations of 3TX functions can be realized to enhance the uplink transmission ability of the radio frequency system.

[0143] In an exemplary embodiment, the third radio frequency front-end module 230 further includes four fourth receiving links, and each fourth receiving link is used to support the reception of ultra-high frequency signals. Among them, the ultra-high frequencies supported by every two fourth transmitting links are the same and are the same as the ultra-high frequency band supported by one of the fourth transmitting links. In this way, the third radio frequency front-end module includes two transceiver links, and each transceiver link includes one fourth transmitting link and two fourth receiving links that support ultra-high frequency signals. Among them, the ultra-high frequencies supported by the two transceiver links can be the same or different, and thus the transmission of two ultra-high frequency signals and the reception of four ultra-high frequency signals can be supported, and the transceiver performance of ultra-high frequency signals can be provided.

[0144] As Figure 13 shown, in an exemplary embodiment, the third radio frequency front-end module 230 further includes: a ninth filter 2305, a first switch 2306, a second switch 2307, a second switch unit 2308, and four fifth low-noise amplifiers 2309.

[0145] A third antenna port 143 is connected to a fifth low-noise amplifier 2309 through the second switch unit 2308 and the ninth filter 2305 to form a fourth receiving link.

[0146] A third antenna port 144 is connected to another fifth low-noise amplifier 2309 through the second switch unit 2308 and the ninth filter 2305 to form another fourth receiving link.

[0147] A third antenna port 143 is connected to another fifth low-noise amplifier 2309 through the second switch unit 2308, the seventh filter 2303, and the first switch 2306 to form another fourth receiving link.

[0148] A third antenna port 144 is connected to another fifth low-noise amplifier 2309 through the second switch unit 2308, the eighth filter 2304, and the second switch 2307 to form another fourth receiving link.

[0149] The seventh power amplifier 2301 is connected to a third antenna port 143 via a first switching switch 2306, a seventh filter 2303, and a second switching unit 2308 to form a fourth transmission link TX4.

[0150] The eighth power amplifier 2302 is connected to another third antenna port 144 via a second switching switch 2307, an eighth filter 2304, and a second switching unit 2308 to form a fourth transmission link TX4.

[0151] Exemplarily, one of the fourth transmission links supports the transmission of N77 band signals, and two of the fourth receiving links support the reception of N77 band signals; the other fourth transmission link supports the transmission of N77 and N79 band signals, and the other two fourth receiving links support the reception of N77 and N79 band signals.

[0152] In this embodiment, the third radio frequency front-end module can not only support the transmission of two ultra-high frequency signals, but also support the reception of four ultra-high frequency signals, which can increase the bandwidth supporting ultra-high frequency signals to improve the uplink and downlink transmission capabilities of ultra-high frequency signals. At the same time, it can also implement more combinations of 3TX functions to enhance the uplink transmission capability of the radio frequency system. In addition, two receiving links and four fourth receiving links are integrated in the same radio frequency front-end device, which can further improve the integration of the radio frequency system and reduce its cost.

[0153] In an exemplary embodiment, the third radio frequency front-end module is further configured with a third coupling port (not shown in the figure), and the third radio frequency front-end module further includes a third coupling circuit. The third coupling circuit is arranged on the path between the second switching unit 2308 and the third antenna ports 143 and 144 for coupling the radio frequency signals on this path to be fed back to the radio frequency transceiver through the third coupling port to detect the power of the radio frequency signals.

[0154] As Figure 14 shown, in an exemplary embodiment, different from the foregoing embodiment, the third radio frequency front-end module 230 includes two sub radio frequency front-end modules 231, and each sub radio frequency front-end module 231 is a radio frequency packaging device.

[0155] As Figure 15 and Figure 16 shown, each sub radio frequency front-end module 231 includes a fourth transmission link TX4 to support the transmission processing of radio frequency signals in the fourth frequency band. For example, each fourth transmission link TX4 can support the power amplification, filtering, etc. of radio frequency signals in the ultra-high frequency band. The ultra-high frequency band includes but is not limited to at least one of N77, N79, and N78, etc.

[0156] Each sub-radio frequency front-end module 231 may be configured with a fourth antenna port 152 for connecting to an antenna and a fourth input port 151 for connecting to a radio frequency transceiver 10. Each sub-radio frequency front-end module 231 includes a ninth power amplifier 2311, a tenth filter 2312, and a third switching unit 2313. The ninth power amplifier 2311 is connected to the fourth antenna port 152 through the tenth filter 2312 and the third switching unit 2313 to form a third transmission link TX3. In the embodiments of the present application, for ease of description, the radio frequency signal in the fourth frequency band is taken as an example of the N77 frequency band (TDD mode) for description. The seventh power amplifier 2301 can support power amplification of the N77 frequency band signal, and the seventh filter 2303 only allows the N77 frequency band signal to pass through.

[0157] It should be noted that the ultra-high frequency bands supported by each sub-radio frequency front-end module 231 may be the same. For example, they may all be the N77 frequency band. Optionally, the ultra-high frequency bands supported by each sub-radio frequency front-end module 231 are different. For example, one of the fourth transmission links TX4 supports the N77 frequency band, and one of the fourth transmission links TX4 supports the N79 frequency band.

[0158] The third radio frequency front-end module 230 in this embodiment may include two sub-radio frequency front-end modules 231. Each sub-radio frequency front-end module 231 is provided with one-way transmission for radio frequency signals in the ultra-high frequency band that supports the TDD mode. Based on the two sub-radio frequency front-end modules 231, the radio frequency system can support two-way transmission of radio frequency signals in the ultra-high frequency band that supports the TDD mode.

[0159] In an exemplary embodiment, each sub-radio frequency front-end module 231 includes two fifth receiving links, and each fifth receiving link is used to support the reception of radio frequency signals in the fourth frequency band. Each sub-radio frequency front-end module 231 includes a fourth receiving unit. The fourth receiving unit may include two sixth low-noise amplifiers 2314 and two ultra-high frequency filters 2315. A fifth antenna port 152 is connected to a sixth low-noise amplifier 2314 through the third switching unit 2313 and an ultra-high frequency filter 2315 to form a fifth receiving link. Another fifth antenna port 152 is connected to another sixth low-noise amplifier 2314 through the third switching unit 2313 and another ultra-high frequency filter 2315 to form another fifth receiving link.

[0160] The third radio frequency front-end module 230 in this embodiment may include two sub-radio frequency front-end modules 231. Each sub-radio frequency front-end module 231 is provided with one-way transmission and two-way reception of radio frequency signals in the ultra-high frequency band for supporting the TDD mode. Based on the two sub-radio frequency front-end modules 231, the radio frequency system can support two-way transmission and four-way reception of radio frequency signals in the ultra-high frequency band for the TDD mode. In addition, the two receiving links and the four-way fourth receiving link are integrated in the same radio frequency front-end device, which can further improve the integration degree of the radio frequency system and reduce its cost.

[0161] As Figure 17 shown, in an exemplary embodiment, the radio frequency front-end module 20 further includes two radio frequency front-end sub-modules 200. Each radio frequency front-end sub-module 200 includes a low-frequency radio frequency front-end device 201, a medium-high frequency radio frequency front-end device 202, and an ultra-high frequency radio frequency front-end device 203. Among them, the low-frequency radio frequency front-end device 201 includes a low-frequency transmission link to support the transmission processing of low-frequency signals. The medium-high frequency radio frequency front-end device 202 includes an intermediate frequency transmission link and two high-frequency transmission links to support the transmission processing of intermediate frequency signals and two high-frequency signals. The ultra-high frequency radio frequency front-end device 203 includes an ultra-high frequency transmission link to support the transmission processing of ultra-high frequency signals.

[0162] In this embodiment, two sets of radio frequency front-end sub-modules are provided to implement 3TX functions with different combinations to be applicable to different communication scenarios.

[0163] In an exemplary embodiment, the present application further provides a communication device including the radio frequency system in any of the above embodiments.

[0164] In an exemplary embodiment, a communication device is provided. The communication device may be a terminal, and its internal structure diagram may be as Figure 18As shown in the figure. The computer device includes a processor, a memory, an input / output interface, a communication interface, a display unit, and an input device. Among them, the processor, the memory, and the input / output interface are connected through a system bus, and the communication interface, the display unit, and the input device are connected to the system bus through the input / output interface. Among them, the processor of the computer device is used to provide computing and control capabilities. The memory of the computer device includes a non-volatile storage medium and an internal memory. The non-volatile storage medium stores an operating system and computer programs. The internal memory provides an environment for the operation of the operating system and computer programs in the non-volatile storage medium. The input / output interface of the computer device is used to exchange information between the processor and external devices. The communication interface of the computer device is used to communicate with external terminals in a wired or wireless manner, and the wireless manner can be implemented through WIFI, a mobile cellular network, near field communication (NFC), or other technologies. The computer program, when executed by the processor, is used to implement a coexistence communication method. The display unit of the computer device is used to form a visually visible picture, which can be a display screen, a projection device, or a virtual reality imaging device. The display screen can be a liquid crystal display screen or an electronic ink display screen. The input device of the computer device can be a touch layer covering the display screen, or a button, a trackball, or a touchpad provided on the housing of the computer device, or an external keyboard, touchpad, or mouse, etc.

[0165] Those skilled in the art can understand that Figure 18 the structure shown in the figure is only a block diagram of some structures related to the solution of the present application, and does not constitute a limitation on the computer device to which the solution of the present application is applied. The specific computer device may include more or fewer components than those shown in the figure, or combine some components, or have different component arrangements.

[0166] The technical features of the above embodiments can be combined arbitrarily. For the sake of brevity of 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 recorded in the present application.

[0167] The above embodiments only represent several implementation manners of the present application, and their descriptions are relatively specific and detailed, but they should not be construed as a limitation on the patent scope of the present application. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present application, several modifications and improvements can still be made, and these all belong to the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the appended claims.

Claims

1. A radio frequency system, characterized in that, Comprising: A radio frequency transceiver, A radio frequency front-end module, connected to the radio frequency transceiver. The radio frequency front-end module includes at least two first transmission links, two second transmission links, two third transmission links, and two fourth transmission links. Among them, the first transmission link is used to support the transmission of radio frequency signals in the first frequency band, the second transmission link is used to support the transmission of radio frequency signals in the second frequency band, the third transmission link is used to support the transmission of radio frequency signals in the third frequency band; the fourth transmission link is used to support the transmission of radio frequency signals in the fourth frequency band; among them, The radio frequency system supports three target transmission links to work simultaneously to support the uplink transmission of three target radio frequency signals; among them, the frequency band modes corresponding to the three target radio frequency signals include two FDD mode frequency bands and one TDD mode frequency band, or the frequency band modes corresponding to the three target radio frequency signals include two TDD mode frequency bands and one FDD mode frequency band; The first frequency band, the second frequency band, and the third frequency band can be FDD modes respectively, the second frequency band, the third frequency band, and the fourth frequency band can be TDD modes respectively, and the first frequency band, the second frequency band, the third frequency band, and the fourth frequency band are all different.

2. The radio frequency system according to claim 1, wherein The radio frequency front-end module includes: A first radio frequency front-end module, connected to the radio frequency transceiver. The first radio frequency front-end module includes at least two of the first transmission links and one of the second transmission links; A second radio frequency front-end module, connected to the radio frequency transceiver. The second radio frequency front-end module includes at least one of the second transmission links and two of the third transmission links; A third radio frequency front-end module, connected to the radio frequency transceiver. The second radio frequency front-end module includes at least two fourth transmission links; among them, The first radio frequency front-end module and the second radio frequency front-end module are respectively radio frequency packaging devices.

3. The radio frequency system according to claim 2, wherein The first frequency band is a low-frequency band, the second frequency band is a medium-frequency band. The first radio frequency front-end module is configured with a plurality of first input ports for connecting to the radio frequency transceiver, and a plurality of first antenna ports for connecting to an antenna; among them, the first radio frequency front-end module includes: A first transmission unit, including two of the first transmission links. The input end of each first transmission link is correspondingly connected to a first input port, and the output end of each first transmission link is correspondingly connected to a first antenna port; among them, one of the first transmission links is used to support the low-frequency bands of 3G, 4G, and 5G systems, and the other first transmission link is used to support the low-frequency bands of 2G, 4G, and 5G systems; A second transmission unit, including one of the second transmission links. The input end of the second transmission link is connected to another first input port, and the output end of the second transmission link is connected to another first antenna port; among them, the second transmission link is used to support the medium-frequency bands of 2G, 4G, and 5G systems.

4. The radio frequency system according to claim 3, characterized in that, The first transmission unit includes: a first power amplifier, a first switch, a first filtering unit, a second switch, a second power amplifier, a second filtering unit, among them, The first power amplifier is connected to one of the first antenna ports through the first switch, the first filtering unit, and the second switch to form one of the first transmission links; The second power amplifier is connected to one of the first antenna ports through the second filtering unit and the second switch to form another one of the first transmission links; The second transmitting unit includes: a third power amplifier and a third filtering unit; wherein, the third power amplifier is connected to another one of the first antenna ports through the third filtering unit to form the second transmission link.

5. The radio frequency system according to claim 4, wherein The second transmitting unit further includes a third duplexer, wherein, The input end of the third power amplifier is connected to one of the first input ports, the output end of the third power amplifier is connected to the first end of the third duplexer, the second end of the third duplexer is connected to the second receiving link of the second radio frequency front-end module, and the common end of the third duplexer is connected to another one of the first antenna ports.

6. The radio frequency system according to claim 4, wherein The first radio frequency front-end module is further configured with a plurality of first output ports for connecting to the radio frequency transceiver, and the first radio frequency front-end module further includes: A first receiving unit, including two first receiving branches. The input end of each first receiving branch is connected to the first filtering unit and the second filtering unit, the output end of each first receiving branch is connected to one of the first output ports, and each first receiving branch is used to support low-noise amplification processing of radio frequency signals in the first frequency band.

7. The RF system according to claim 2, wherein The second frequency band is an intermediate frequency band, the second frequency band is a high frequency band, the second radio frequency front-end module is configured with a plurality of second input ports for connecting to a radio frequency transceiver, and a plurality of second antenna ports for connecting to an antenna. Among them, the second radio frequency front-end module includes: A third transmitting unit, the two input ends of the third transmitting unit are respectively connected to two of the second input ports correspondingly; A fourth transmitting unit, the input end of the fourth transmitting unit is connected to another one of the second input ports; A first switching unit, a plurality of first ends of the first switching unit are respectively connected to the output ends of the third transmitting unit and the fourth transmitting unit correspondingly, and a plurality of second ends of the first switching unit are respectively connected to a plurality of the second antenna ports correspondingly; wherein, The third transmitting unit and the first switching unit form one of the second transmission links, and the fourth transmitting unit and the first switching unit form two of the third transmission links.

8. The radio frequency system according to claim 7, characterized in that, The third transmitting unit includes: a fourth power amplifier, a third switch, and a fourth filtering unit; wherein, The fourth power amplifier is connected to the first switching unit through the third switch and the fourth filtering unit to form one of the second transmission links for supporting the intermediate frequency band in TDD mode and FDD mode; The fourth transmitting unit includes: a fifth power amplifier, a sixth power amplifier, a fourth switch, a fifth switch, a fifth filtering unit, and a sixth filtering unit, wherein, The fifth power amplifier is connected to the first switch unit via the fourth switch and the fifth filtering unit to form another third transmission link for supporting the high-frequency band of the TDD mode; The sixth power amplifier is connected to the first switch unit via the fifth switch and the sixth filtering unit to form another third transmission link for supporting the high-frequency bands of the FDD and TDD modes.

9. The radio frequency system according to claim 7, wherein The second radio frequency front-end module is configured with a plurality of second output ports for connecting to a radio frequency transceiver. Among them, the second radio frequency front-end module includes: A second receiving unit, including at least two second receiving branches and two third receiving branches; where Each of the second receiving branches is used to support low-noise amplification of radio frequency signals in the second frequency band; Each of the third receiving branches is used to support low-noise amplification of radio frequency signals in the third frequency band; One of the second receiving branches shares the same duplexer with the second transmission link in the first radio frequency front-end module.

10. The radio frequency system according to claim 2, wherein The third radio frequency front-end module is configured with a plurality of third input ports for connecting to the radio frequency transceiver and a plurality of third antenna ports for connecting to an antenna; the third radio frequency front-end module includes: a seventh power amplifier, an eighth power amplifier, a seventh filter, and an eighth filter, where The input end of the seventh power amplifier is connected to one of the third input ports, and the output end of the seventh power amplifier is connected to one of the third antenna ports via the seventh filter to form one of the fourth transmission links; The input end of the eighth power amplifier is connected to another one of the third input ports, and the output end of the eighth power amplifier is connected to another one of the third antenna ports via the eighth filter to form another one of the fourth transmission links.

11. The radio frequency system according to claim 10, wherein The fourth frequency band includes at least one of N77 and N79.

12. The radio frequency system according to claim 10, wherein The third radio frequency front-end module further includes four fourth receiving links, and each of the fourth receiving links is used to support the reception of radio frequency signals in the fourth frequency band.

13. The radio frequency system according to claim 12, characterized in that, The third radio frequency front-end module further includes: a ninth filter, a first switching switch, a second switching switch, a second switch unit, and four fourth low-noise amplifiers; where One of the third antenna ports is connected to one of the fourth low-noise amplifiers via the second switch unit and the ninth filter to form one of the fourth receiving links; One of the third antenna ports is connected to another one of the fourth low-noise amplifiers via the second switch unit and the ninth filter to form another one of the fourth receiving links; One of the third antenna ports is connected to another one of the fourth low-noise amplifiers via the second switch unit, the seventh filter, and the first switching switch to form another one of the fourth receiving links; One of the third antenna ports is connected to another one of the fourth low-noise amplifiers via the second switch unit, the eighth filter, and the second switching switch to form another one of the fourth receiving links; The seventh power amplifier is connected to one of the third antenna ports via the first switching switch, the seventh filter, and the second switch unit to form one of the fourth transmission links; The eighth power amplifier is connected to another third antenna port through the second switching switch, the eighth filter, and the second switching unit to form a fourth transmission link.

14. The RF system according to claim 2, characterized in that, The fourth frequency band is an ultra-high frequency band. Among them, the third RF front-end module includes two sub-RF front-end modules. Each sub-RF front-end module includes a fourth transmission link, and each sub-RF front-end module is a RF packaging device.

15. The radio frequency system according to claim 14, characterized in that, Each sub-RF front-end module includes two fifth receiving links, and each fifth receiving link is used to support the reception of RF signals in the fourth frequency band.

16. The radio frequency system according to claim 1, wherein The RF system is configured with a first target transmission link group and a second target transmission link group, where In the first communication mode, the three target transmission links of the first target transmission link group work simultaneously to support the transmission of three target RF signals. The frequency band modes corresponding to the three target RF signals supported by the first target transmission link group include two FDD modes and one TDD mode; In the second communication mode, the three target transmission links in the second target transmission link group work simultaneously to support the transmission of three target RF signals. The frequency band modes corresponding to the three target RF signals supported by the second target transmission link group include two TDD modes and one FDD mode.

17. The radio frequency system according to claim 1, wherein Among the three target transmission links, at most two transmission links support RF signals with the same frequency band.

18. The radio frequency system according to claim 1, characterized in that, The first frequency band is a low frequency band, the second frequency band is a medium frequency band, the third frequency band is a high frequency band, and the fourth frequency band is an ultra-high frequency band.

19. A communication device, characterized in that, Including the RF system according to any one of claims 1-18.

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