Radio frequency front-end module and electronic device

Abstract

The application relates to the technical field of radio frequency circuits, and provides a radio frequency front end module and electronic equipment. The module comprises a first transmitting module and a first receiving module; the first receiving module is coupled with a first antenna and a second antenna; the first antenna is used for receiving a receiving signal of a first frequency band; the second antenna is used for receiving a receiving signal of part or all of frequency bands except the first frequency band; the first receiving module comprises a first switch, a first filter assembly, a first low-noise amplifier assembly and a first multiplex switch; the first filter assembly is coupled with the first switch and the first low-noise amplifier assembly respectively, and the first low-noise amplifier assembly is further coupled with the first multiplex switch; the receiving signal of the first frequency band sequentially passes through the first antenna, the first switch, the first filter, the first low-noise amplifier and the first multiplex switch to enter a first radio frequency chip. The module does not need to additionally introduce a filter for the first frequency band, can reduce the cost, and is beneficial to the miniaturization of the module.

Description

Technical Field

[0001] This application relates to the field of radio frequency circuit technology, specifically to a radio frequency front-end module and electronic device. Background Technology

[0002] Fifth-generation wireless systems (5G) have higher transmission efficiency and are therefore widely used.

[0003] With the application of 5G frequency bands and the use of multiple input multiple output (MIMO) technology, the number of antennas on terminal devices is increasing. However, the size of terminal devices is limited, and the performance requirements of the radio frequency front-end module in terminal devices are becoming increasingly higher to meet the needs of various scenarios with multiple frequency bands and multiple standards. Summary of the Invention

[0004] This application provides a radio frequency (RF) front-end module, an RF front-end module control method, an electronic device, a computer-readable storage medium, and a computer program product, which can improve the performance of the RF front-end module and reduce costs.

[0005] In a first aspect, a radio frequency (RF) front-end module is provided, comprising: a first transmitting module and a first receiving module; the first receiving module is used to couple with a first antenna and a second antenna respectively; the first antenna is used to receive received signals in a first frequency band; the second antenna is used to receive received signals in some or all frequency bands other than the first frequency band; the first receiving module includes: a first switch, a first filtering component, a first low-noise amplifier component, and a first multiplexing switch; the first filtering component is coupled with the first switch and the first low-noise amplifier component respectively, and the first low-noise amplifier component is also coupled with the first multiplexing switch; in a first state, the received signal in the first frequency band sequentially passes through the first antenna, the first switch, the first filter, the first low-noise amplifier, and the first multiplexing switch, and enters a first RF chip; wherein, the first filter is a filter in the first filtering component that matches the first frequency band, and the first low-noise amplifier is a low-noise amplifier in the first low-noise amplifier component that matches the first frequency band.

[0006] The first antenna can be an antenna used exclusively for the first frequency band, such as a B40 DM antenna or a B41 DM antenna. The second antenna can be an antenna used for some or all frequency bands other than the first frequency band, such as a DM antenna shared by multiple frequency bands. Optionally, the second antenna can be an antenna used for frequency bands other than the first frequency band, or an antenna used for frequency bands other than the first and second frequency bands. A description of the second frequency band will be provided later and will not be repeated here.

[0007] Optionally, the first transmitting module can be a transmitting module in the MHB band. The first receiving module can be a receiving module in the MHB band used in conjunction with the first transmitting module. Both the first transmitting module and the first receiving module are coupled to the first RF chip. It should be noted that coupling refers to the two being directly connected through RF traces or indirectly connected through other RF components, such as through attenuation networks, matching networks, etc.

[0008] One end of the first filtering component is connected to a first switch, and the other end can be connected to the input port of the first low-noise amplifier component via another switch. The output port of the first low-noise amplifier component is connected to a first multiplexer switch. The first switch can also be connected to a first antenna. The first switch can be used to switch the path of the received signal in the first frequency band. The first filtering component may include one or more filters. The first filtering component includes at least a first filter for filtering signals in the first frequency band. The first low-noise amplifier component includes at least a first low-noise amplifier for low-noise amplification of the received signal in the first frequency band. The first multiplexer switch is used to switch the received signal passing through the first receiving module and input it to the corresponding port of the first RF chip.

[0009] Optionally, the first filter can be filter 1003, and the first low-noise amplifier can be LNA1005.

[0010] Optionally, the first filter component may further include filters for other frequency bands, such as filters for B41, filters for B3, etc. Optionally, for the FDD band, the filter in the first filter component is a filter for the receiving band; for the TDD band, the corresponding filter in the first filter component is a filter usable in both the transmitting and receiving bands. The first multiplexer switch (e.g., MUX1006) is used to switch the receiving paths of each frequency band and switch to the corresponding port of the first RF chip for input to the first RF chip.

[0011] The aforementioned first state refers to the receiving state of the first frequency band. In the first state, the first antenna receives the received signal of the first frequency band and enters the first filter after being switched by the first switch. After filtering, the received signal of the first frequency band is amplified by the first low-noise amplifier and switched by the first multiplexer switch before entering the first radio frequency chip. The path through which the received signal of the first frequency band flows can be referred to as a receiving path of the first frequency band.

[0012] In the aforementioned RF front-end module, the received signal of the first frequency band can reuse the first filter when the first switch is switched. Therefore, there is no need to introduce an additional filter for the first frequency band, which reduces costs while ensuring low insertion loss in the path, thereby ensuring high receiving sensitivity. In addition, not introducing an additional filter for the first frequency band also ensures that the layout and wiring difficulty is not increased, which is beneficial for module miniaturization.

[0013] In some possible implementations, the first switch is a first antenna switch in a first receiving module; the first antenna switch includes: a first auxiliary port and a second auxiliary port; the first antenna switch is coupled to a first filter through a first discrete port of the first antenna switch; the first antenna switch is coupled to a first antenna through a first auxiliary port; the first antenna switch is coupled to a second antenna through a first antenna port of the first antenna switch; the first receiving module further includes: a first switching component, a first filtering component being coupled to a first low-noise amplification component through the first switching component; the first antenna switch is configured to switch the path of the transmitted signal and the received signal of the first frequency band.

[0014] Optionally, the aforementioned first switch can be the first antenna switch in the first receiving module, namely DPXT1001. This first antenna switch includes multiple discrete ports (e.g., ports 4, 5, 6, and 7 of DPXT1001) and antenna ports (e.g., ports 1 and 2 of DPXT1001, also referred to as ANT1 and ANT2 of DPXT1001), as well as a first auxiliary port (port 8 of DPXT1001, AUX1) and a second auxiliary port (port 3 of DPXT1001, AUX2). It should be noted that the discrete ports of the first antenna switch are connected one-to-one with the filters in the first filtering component. Optionally, when it is not necessary to support multiple frequency band receiving paths, some discrete ports of the first antenna switch can be left floating, i.e., not connected to filters. The first antenna port of the first antenna switch can be connected to a second antenna.

[0015] It should be noted that the antenna port of the antenna switch can be used as the antenna port of the transmitting or receiving module it belongs to, and can be connected to other ports.

[0016] The first receiving module may further include a first switching assembly, which may include one or more switches (e.g., switch 1004 and / or switch 1010), wherein the switches may be single-pole multi-throw switches.

[0017] Because low-noise amplifiers (LNAs) operate over a wide frequency range, multiple different but closely related frequency bands can share the same LNA. Therefore, using a single-pole multiple-throw (SPMD) switch can achieve the effect of multiple frequency bands sharing the same LNA, thus simplifying the circuit path.

[0018] The aforementioned first antenna switch can be configured to switch the path between the transmit signal and the receive signal of the first frequency band. The first auxiliary port of the first antenna switch can be connected to the second auxiliary port. When the first auxiliary port and the second auxiliary port are connected, the transmit signal of the first frequency band can be transmitted to the first antenna for transmission. In this RF front-end module, the transmit signal of the first frequency band is transmitted through the connection of the two auxiliary ports of the first antenna switch, enabling transmission via the first antenna used independently for the first frequency band. This ensures the antenna performance of the first frequency band without introducing additional components, thus ensuring low cost and low insertion loss. Furthermore, avoiding the introduction of additional components also ensures no increase in layout and wiring complexity, facilitating module miniaturization.

[0019] In some possible implementations, in the first state, the received signal of the first frequency band sequentially passes through the first antenna, the first auxiliary port of the first antenna switch, the first discrete port of the first antenna switch (e.g., port 4 of DPXT1001), the first filter, the second switch (e.g., switch 1004), the first low-noise amplifier, and the first multiplexer switch, and enters the first RF chip, where the second switch is the switch in the first switch assembly corresponding to the first frequency band; in the second state, the transmitted signal of the first frequency band sequentially passes through the first transmit module, the second auxiliary port of the first antenna switch, and the first auxiliary port of the first antenna switch to the first antenna.

[0020] Specifically, the received signal in the first frequency band can enter the first RF chip through the aforementioned receiving path without the need for additional components. This ensures low cost while maintaining low insertion loss, thereby guaranteeing high receiving sensitivity. Furthermore, avoiding the introduction of additional components also ensures minimal complexity in layout and wiring, facilitating module miniaturization.

[0021] The transmitted signal in the first frequency band can sequentially pass through the PA, switch, filter, and antenna switch in the first transmitting module, and then be transmitted to the first antenna through the second auxiliary port and the first auxiliary port of the first antenna switch. Taking B40 as an example, the transmitted signal of B40 can sequentially pass through PA1026, switch 1024, filter 1024, and antenna switch 1017 in the first transmitting module, and then be transmitted to the B40 DM antenna through the second auxiliary port (e.g., port 3 of DPXT1001) and the first auxiliary port (port 8 of DPXT1001).

[0022] The transmission signal of the first frequency band is transmitted through the conduction of the two auxiliary ports of the first antenna switch, enabling transmission via the first antenna used independently in the first frequency band. This ensures the antenna performance of the first frequency band without introducing additional components, thus ensuring low cost and low insertion loss. Furthermore, avoiding the introduction of additional components also ensures no increase in layout and wiring complexity, facilitating module miniaturization.

[0023] In some possible implementations, the RF front-end module further includes: a first polling switch; the first polling switch is coupled to a first antenna switch via a second auxiliary port, and the first polling switch is also coupled to a first transmitting module and a third antenna (PM antenna); the first polling switch is configured to switch the path of the transmitting signal of the first frequency band; in the second state, the transmitting signal of the first frequency band passes sequentially through the first transmitting module, the first polling switch, the second auxiliary port of the first antenna switch, and the first auxiliary port of the first antenna switch to the first antenna.

[0024] The first polling switch mentioned above can be switch 1014, which can be a 3P3T switch. This first polling switch can be used to switch the transmission path of the polling signal. One port of this polling switch (e.g., port 2 of switch 1014) is coupled to a second auxiliary port of the first antenna switch (e.g., port 3 of DPXT1001). The third antenna mentioned above can be a PM antenna, which can be coupled to the first transmitting module through the first polling switch.

[0025] In the second state described above, the transmitted signal of the first frequency band can sequentially pass through the PA, switch, filter, and antenna switch in the first transmit module, and then be transmitted to the first antenna through the first polling switch, the second auxiliary port of the first antenna switch, and the first auxiliary port of the first antenna switch. Taking B40 as an example, the transmitted signal of B40 can sequentially pass through PA1026, switch 1024, filter 1024, and antenna switch 1017 in the first transmit module, and then be transmitted to the B40 DM antenna through switch 1014, the second auxiliary port of DPXT1001 (e.g., port 3 of DPXT1001), and the first auxiliary port of DPXT1001 (port 8 of DPXT1001). That is, the transmitted signal of B40 can flow through transmit path D-2 and be transmitted by the first antenna. Optionally, in other states, the transmitted signal of B40 can also flow through transmit paths D-1, D-3 to D-8, etc., to realize SRS polling of different transmit modules.

[0026] This RF front-end module not only ensures the performance of the first frequency band, but also is compatible with the polling path of the transmission signal of the first frequency band when the first transmitting module is the main transmitting module, making it more widely applicable.

[0027] In some possible implementations, the RF front-end module further includes: a second polling switch and a second transmit module; the second polling switch is coupled to the second transmit module, the fourth antenna, and the first polling switch respectively; the second transmit module is also coupled to the fifth antenna (PRX antenna); the second polling switch is configured to switch the path of the transmit signal of the first frequency band; in the third state, the transmit signal of the first frequency band passes sequentially through the second transmit module, the second polling switch, the first polling switch, the second auxiliary port of the first antenna switch, and the first auxiliary port of the first antenna switch to the first antenna.

[0028] The first four antennas mentioned above can be DRX antennas, and the fifth antenna can be a PRX antenna. The second polling switch can be switch 1033. This second polling switch can be a 3P3T.

[0029] In the third state described above, the transmitted signal of the first frequency band can sequentially pass through the PA, switch, filter, and antenna switch in the second transmit module, and then be transmitted to the first antenna via the second polling switch, the first polling switch, the second auxiliary port of the first antenna switch, and the first auxiliary port of the first antenna switch. Taking B40 as an example, the transmitted signal of B40 can sequentially pass through PA1043, switch 1041, filter 1038, and antenna switch 1034 in the second transmit module, and then be transmitted to the B40 DM antenna via switch 1033, switch 1014, the second auxiliary port of DPXT1001 (e.g., port 3 of DPXT1001), and the first auxiliary port of DPXT1001 (port 8 of DPXT1001). That is, the transmitted signal of B40 can flow through transmit path D-8 and be transmitted by the first antenna. Optionally, in other states, the transmitted signal of B40 can also flow through transmit paths D-1, D-3 to D-8, etc., to realize SRS polling of different transmit modules.

[0030] This RF front-end module not only ensures the performance of the first frequency band, but also is compatible with the polling path of the first frequency band's transmission signal when the second transmission module is the main transmission module, making it more widely applicable.

[0031] In some possible implementations, the first antenna switch further includes a third auxiliary port, through which the first antenna switch is coupled to a sixth antenna; the sixth antenna is used to receive received signals in the second frequency band; the second antenna is used to receive received signals in frequency bands other than the first and second frequency bands; the first antenna switch is coupled to a second discrete port and a second filter, the second filter being a filter in the first filtering component that matches the second frequency band; the first switching component is also configured to switch the path of the received signal in the second frequency band.

[0032] When there are two frequency bands that require separate antennas, the aforementioned first antenna switch also includes a third auxiliary port (e.g., port 9, AUX3 of the DPXT1001). This first antenna switch can be coupled to a sixth antenna (e.g., a B41 DM antenna) via the third auxiliary port.

[0033] It should be noted that the sixth antenna is an independent antenna for the second frequency band and can be used to transmit and receive signals in the second frequency band. Optionally, the second frequency band and the first frequency band are different frequency bands. For example, when the first frequency band is B40, the second frequency band can be B41; when the first frequency band is B41, the second frequency band can be B40; when the first frequency band is N40, the second frequency band can be N41; when the first frequency band is N41, the second frequency band can be N40. This application does not limit the specific situation of the first and second frequency bands, as long as there is a scenario where a separate antenna is needed.

[0034] When there are two frequency bands that require separate antennas, the second antenna is used to transmit and receive signals in frequency bands other than the first and second frequency bands. Taking the second frequency band as B41 as an example, the second filter can be filter 1009.

[0035] In the aforementioned RF front-end module, the transmission signal of the second frequency band is transmitted through the conduction of the two auxiliary ports of the first antenna switch, enabling transmission via a sixth antenna used independently in the second frequency band. This ensures antenna performance in the second frequency band without introducing additional components, thus guaranteeing low cost and low insertion loss in the second frequency band path. Furthermore, avoiding the introduction of additional components ensures no increase in layout and wiring complexity, facilitating module miniaturization.

[0036] In some possible implementations, in the fourth state, the received signal of the second frequency band sequentially passes through the sixth antenna, the third auxiliary port of the first antenna switch, the second discrete port of the first antenna switch, the second filter, the first switching assembly, the second low-noise amplifier, and the first multiplexer switch before entering the first RF chip. The second low-noise amplifier is a low-noise amplifier in the first low-noise amplification assembly that is matched to the second frequency band; the second low-noise amplifier may be the same as or different from the first low-noise amplifier.

[0037] The frequency range applicable to the aforementioned second low-noise amplifier may include a second frequency band. Optionally, the second low-noise amplifier may be the same as the first low-noise amplifier, meaning that the received signals of the first and second frequency bands share the same LNA. For example, B40 and B41 may share LNA1005. Optionally, the second low-noise amplifier may also be different from the first low-noise amplifier, meaning that the received signals of the first and second frequency bands each use different LNAs.

[0038] In this RF front-end module, the received signal of the second frequency band can enter the first RF chip through the aforementioned receiving path without the need for additional components. This ensures low cost while maintaining low insertion loss, thereby ensuring high receiving sensitivity. Furthermore, avoiding the introduction of additional components also ensures that layout and wiring complexity are not increased, facilitating module miniaturization.

[0039] In some possible implementations, the first polling switch is also configured to switch the path of the transmission signal of the second frequency band; in the fifth state, the transmission signal of the second frequency band passes sequentially through the first transmission module, the third auxiliary port of the first antenna switch, the first auxiliary port of the first antenna switch to the sixth antenna.

[0040] Specifically, the transmission signal of the second frequency band can sequentially pass through the PA, switch, filter, and antenna switch in the first transmission module, and then be transmitted through the first polling switch, the third auxiliary port of the first antenna switch, the first auxiliary port of the first antenna switch, and finally to the sixth antenna. Taking B41 as an example, the transmission signal of B41 can sequentially pass through PA1026, switch 1024, filter 1022, and antenna switch 1017 in the first transmission module, and then be transmitted through switch 1014, the second auxiliary port of DPXT1001 (e.g., port 3 of DPXT1001), and the third auxiliary port of DPXT1001 (port 9 of DPXT1001) to the B41 DM antenna. That is, the transmission signal of B41 can flow through transmission path E-2 and be transmitted by the sixth antenna. Optionally, in other states, the transmission signal of B41 can also flow through transmission paths E-1, E-3 to E-8, etc., to realize SRS polling of different transmission modules.

[0041] This RF front-end module not only ensures the performance of the second frequency band, but also is compatible with the polling path of the second frequency band transmission signal when the first transmission module is the main transmission module, making it more widely applicable.

[0042] In some possible implementations, the first polling switch is also configured to switch the path of the transmission signal of the second frequency band; the second polling switch is also configured to switch the path of the transmission signal of the second frequency band; in the sixth state, the transmission signal of the second frequency band passes sequentially through the second transmission module, the second polling switch, the first polling switch, the third auxiliary port of the first antenna switch, and the first auxiliary port of the first antenna switch to the sixth antenna.

[0043] Specifically, the transmitted signal of the second frequency band can sequentially pass through the PA, switch, filter, and antenna switch in the second transmit module, and then be transmitted through the second polling switch, the first polling switch, the third auxiliary port of the first antenna switch, the first auxiliary port of the first antenna switch, and finally to the sixth antenna. Taking B41 as an example, the transmitted signal of B41 can sequentially pass through PA1043, switch 1041, filter 1039, and antenna switch 1043 in the second transmit module, and then be transmitted through switch 1033, switch 1014, the second auxiliary port of DPXT1001 (e.g., port 3 of DPXT1001), and the third auxiliary port of DPXT1001 (port 9 of DPXT1001) to the B41 DM antenna. That is, the transmitted signal of B41 can flow through transmit path E-8 and be transmitted by the sixth antenna. Optionally, in other states, the transmitted signal of B41 can also flow through transmit paths E-1 to E-7, etc., to realize SRS polling of different transmit modules.

[0044] This RF front-end module not only ensures the performance of the second frequency band, but also is compatible with the polling path of the second frequency band's transmission signal when the second transmission module is the main transmission module, making it more widely applicable.

[0045] In some possible implementations, the second antenna is used to receive signals from some or all frequency bands other than the first frequency band, including: when the second antenna is in a first interference state, the second antenna is used to receive signals from some or all frequency bands other than the first frequency band, the first interference state being a state in which the second antenna is interfered with by a first interference frequency band, the first interference frequency band being a frequency band that interferes with the signal of the first frequency band; when the second antenna is not in the first interference state, the second antenna is also used to receive signals from the first frequency band; in a seventh state, the received signal of the first frequency band sequentially passes through the second antenna, the first antenna port of the first antenna switch, the second discrete port of the first antenna switch, the first filter, the first switching assembly, the first low-noise amplifier, and the first multiplexer switch, and enters the first RF chip; in an eighth state, the transmitted signal of the first frequency band sequentially passes through the first transmitting module, the second auxiliary port of the first antenna switch, and the first antenna port of the first antenna switch to the second antenna; in the seventh and eighth states, the second antenna is not in the first interference state.

[0046] If there is an interfering frequency band in the first frequency band, such as when the WIFI frequency band is operating, then there is an interfering WIFI frequency band for B40. In this case, the signal of the first frequency band can be transmitted and received through the first antenna, and the operating state can be as described above.

[0047] If there are no interfering frequency bands for the first frequency band, for example, if the Wi-Fi band is not working, then there are no Wi-Fi bands interfering with B40. In this case, the signal from the first frequency band can be transmitted and received via the second antenna.

[0048] Both the seventh and eighth states mentioned above refer to states where there are no interfering frequency bands in the first frequency band. In both the seventh and eighth states, the first frequency band can still use the second antenna for transmission and reception, thereby increasing the types of transmission paths for the first frequency band and expanding its application scenarios.

[0049] In some possible implementations, the second antenna is used to receive signals from frequency bands other than the first and second frequency bands, including: when the second antenna is in a second interference state, the second antenna is used to receive received signals from frequency bands other than the first and second frequency bands, the second interference state being a state in which the second antenna is interfered with by a second interference frequency band, the second interference frequency band being a frequency band that interferes with the signals of the second frequency band; when the second antenna is not in the second interference state, the second antenna is also used to receive received signals from the second frequency band; in the ninth state, the received signal of the second frequency band sequentially passes through the first antenna, the first antenna port of the first antenna switch, the second discrete port of the first antenna switch, the second filter, the second low-noise amplifier, and the first multiplexer switch, and enters the first RF chip; in the tenth state, the transmitted signal of the second frequency band sequentially passes through the first transmit module, the third auxiliary port of the first antenna switch, the first antenna port of the first antenna switch to the sixth antenna; in the ninth and tenth states, the second antenna is not in the second interference state.

[0050] If there is an interfering frequency band in the second frequency band, such as the B41 interfering frequency band, then the signal in the second frequency band can be transmitted and received through the first antenna, and the working state can be as described above.

[0051] If there is no interfering frequency band for the second frequency band, such as the B41 interfering frequency band, then the signal of the second frequency band can be transmitted and received through the second antenna.

[0052] Both the ninth and tenth states mentioned above refer to states where there are no interfering frequency bands in the second frequency band. In both the ninth and tenth states, the second frequency band can still be transmitted and received using the second antenna, thereby increasing the types of transmission paths for the second frequency band and expanding its application scenarios.

[0053] In some possible implementations, the RF front-end module further includes: a second transmitting module, with the polling port of the first transmitting module coupled to the polling port of the second transmitting module; the first transmitting module coupled to a third antenna, and the first transmitting module also coupled to a first receiving module through a second auxiliary port of the first antenna switch.

[0054] In this RF front-end module, the polling ports of the first and second transmitting modules are coupled, eliminating the need for a first and second polling switch to switch the polling path. This simplifies the circuitry, facilitates layout and wiring, and contributes to module miniaturization. Simultaneously, it reduces the number of components used, thereby lowering costs.

[0055] In some possible implementations, in the eleventh state, the received signal of the first frequency band passes sequentially through the first antenna, the first auxiliary port of the first antenna switch, the first discrete port of the first antenna switch, the first filter, the first switching assembly, the first low-noise amplifier, and the first multiplexer switch, and enters the first radio frequency chip; in the twelfth state, the transmitted signal of the first frequency band passes sequentially through the first transmitting module, the second auxiliary port of the first antenna switch, and the first auxiliary port of the first antenna switch to the first antenna.

[0056] In an RF front-end module that does not use a polling switch, the path for the received signal in the first frequency band can be referred to the relevant description above, and will not be repeated here. The transmitted signal in the first frequency band can be emitted via the first RF chip, output through the first transmit module to the second auxiliary port of the first antenna switch, and then flow through the first auxiliary port of the first antenna switch to the first antenna. In this RF front-end module, one polling switch can be eliminated from the path of the transmitted signal in the first frequency band, reducing the insertion loss in the path and improving the performance of the path.

[0057] Taking B40 as an example, the transmission path of B40 can be found in the relevant description of transmission path F-2. Other transmission paths of B40 can be found in the descriptions of transmission paths F1 and F3-F8. When the first transmission module is the main transmission module, the transmission signal of the first frequency band transmitted by the first transmission module can also be transmitted through the polling port of the first transmission module, the polling port of the second transmission module, and then through the transmission of the second transmission module to other antennas for polling.

[0058] In some possible implementations, in the thirteenth state, the transmitted signal of the first frequency band flows through the second transmitting module, is transmitted from the polling port of the second transmitting module to the polling port of the first transmitting module, and then sequentially passes through the first transmitting module, the first auxiliary port of the first antenna switch, and the second auxiliary port of the first antenna switch to the first antenna.

[0059] When the second transmitting module is the main transmitting module, the transmitting signal of the first frequency band can be transmitted from the polling port of the second transmitting module to the polling port of the first transmitting module, and then through the first auxiliary port of the first antenna switch and the second auxiliary port of the first antenna switch to the first antenna. This eliminates the need to go through the polling switch, reducing insertion loss in the path and improving the performance of the path.

[0060] Taking the B40 as an example, the B40's transmission path can be found in the description of transmission path F-8. Other B40 transmission paths can be found in the descriptions of transmission paths F1-F7.

[0061] In some possible implementations, the first antenna switch further includes a third auxiliary port, through which the first antenna switch is coupled to a sixth antenna, and through a second discrete port and a second filter, wherein the second filter is a filter in the first filtering component that matches the second frequency band; the first switching component is also configured to switch the path of the received signal in the second frequency band.

[0062] When there are two frequency bands that require separate antennas, the second antenna is used to transmit and receive signals in frequency bands other than the first and second frequency bands. Taking the second frequency band as B41 as an example, the second filter can be filter 1009.

[0063] In the aforementioned RF front-end module, the transmission signal of the second frequency band is transmitted through the conduction of the two auxiliary ports of the first antenna switch, enabling transmission via a sixth antenna used independently in the second frequency band. This ensures antenna performance in the second frequency band without introducing additional components, thus guaranteeing low cost and low insertion loss in the second frequency band path. Furthermore, avoiding the introduction of additional components ensures no increase in layout and wiring complexity, facilitating module miniaturization.

[0064] In some possible implementations, in the fourteenth state, the received signal of the second frequency band sequentially passes through the sixth antenna, the third auxiliary port of the first antenna switch, the second discrete port of the first antenna switch (e.g., port 5 of DPXT1001), the second filter, the third switch, the second low-noise amplifier, and the first multiplexer switch, and enters the first RF chip. The second low-noise amplifier is a low-noise amplifier in the first low-noise amplification component that matches the second frequency band. The second low-noise amplifier and the first low-noise amplifier may be the same or different. The third switch is a switch in the first switch component that corresponds to the second frequency band.

[0065] The frequency range applicable to the aforementioned second low-noise amplifier may include a second frequency band. Optionally, the second low-noise amplifier may be the same as the first low-noise amplifier, meaning that the received signals of the first and second frequency bands share the same LNA. For example, B40 and B41 may share LNA1005. Optionally, the second low-noise amplifier may also be different from the first low-noise amplifier, meaning that the received signals of the first and second frequency bands each use different LNAs.

[0066] The aforementioned third switch is used to switch the receiving path of the second frequency band. Optionally, the aforementioned third switch can be the same as the second switch, that is, the first frequency band and the second frequency band share the same switch (e.g., switch 1004) to couple the same LNA (e.g., LNA 1005); alternatively, the aforementioned third switch can also be different from the second switch, that is, the first frequency band and the second frequency band use different switches (e.g., switches 1004 and 1010) to couple different LNAs.

[0067] In this RF front-end module, the received signal of the second frequency band can enter the first RF chip through the aforementioned receiving path without the need for additional components. This ensures low cost while maintaining low insertion loss, thereby ensuring high receiving sensitivity. Furthermore, avoiding the introduction of additional components also ensures that layout and wiring complexity are not increased, facilitating module miniaturization.

[0068] In some possible implementations, in the fifteenth state, the transmission signal of the second frequency band flows through the second transmission module, is transmitted from the polling port of the second transmission module to the polling port of the first transmission module, and then sequentially passes through the first transmission module, the first auxiliary port of the first antenna switch, the third auxiliary port of the first antenna switch to the sixth antenna.

[0069] Specifically, the transmitted signal in the second frequency band can pass sequentially through the PA and switch in the second transmitting module. Then, it is transmitted to the polling port of the first transmitting module through the polling port of the second transmitting module, and then sequentially through the switch, filter and second antenna switch in the first transmitting module. Finally, it is output to the third auxiliary port of the first antenna switch, the first auxiliary port of the first antenna switch and the sixth antenna for transmission.

[0070] Taking B41 as an example, the transmission signal of B41 can sequentially pass through PA1043 and switch 1041 in the second transmission module, and be output from port 2 of switch 1041 to the polling port of the first transmission module. Then, it sequentially enters switch 1024 through port 2 of switch 1024 in the first transmission module. After switching by switch 1024, the transmission signal of B41 is output from port 5 of switch 1024 to filter 1022, and input to DPXT1014 through port 3 of DPXT1017. After switching by DPXT1017, the transmission signal of B41 is output from port 1 (ANT1) of DPXT to the first auxiliary port of the first antenna switch, and then to the sixth antenna through the third auxiliary port of the first antenna switch.

[0071] The filter 1022 and antenna switch 1017 are used, and then the signal is transmitted to the B41 DM antenna via switch 1014, the second auxiliary port of DPXT1001 (e.g., port 3 of DPXT1001), and the third auxiliary port of DPXT1001 (port 9 of DPXT1001). That is, the B41's transmitted signal can flow through transmission path G-8 and be transmitted by the sixth antenna. Optionally, in other states, the B41's transmitted signal can also flow through transmission paths G-1 to G7 to achieve SRS polling of different transmission modules. Optionally, the B41's transmitted signal can also flow through transmission path G2.

[0072] This RF front-end module not only ensures the performance of the second frequency band, but also is compatible with the polling path of the second frequency band's transmission signal when the second transmission module is the main transmission module, making it more widely applicable.

[0073] In some possible implementations, the first switch is a first switching switch, and the RF front-end module further includes: a second switching switch; the first switching switch is coupled to a first antenna switch, the second switching switch, and a first filter respectively; the first antenna switch includes: a first auxiliary port and a second auxiliary port; the first antenna switch is coupled to the first filter through a first discrete port of the first antenna switch; the first antenna switch is coupled to the first antenna through the first auxiliary port; the first antenna switch is coupled to the second antenna through the second switching switch; the first receiving module is coupled to the first antenna through the second switching switch; the first receiving module further includes: a first switching component, and a first filtering component is coupled to a first low-noise amplification component through the first switching component; the first antenna switch is configured to switch the path of the transmitted signal and the received signal of the first frequency band.

[0074] Optionally, the first switch can also be a first switching switch, which can be switch 1002. The second switching switch can be switch 1013. Optionally, switch 1002 can be an SPDT, and switch 1013 can be an SPDT. The RF front-end module also includes a second switching switch. The first filter, first auxiliary port, second auxiliary port, first antenna switch, first antenna, and second antenna mentioned here can all be found in the relevant descriptions in the text, and will not be repeated here.

[0075] In this RF front-end module, only two switches are needed in the receiving path through which the received signal of the first frequency band flows. No additional filters (such as filter 525) are required to ensure that the first frequency band can independently use the antenna path switching, which reduces the insertion loss in the receiving path, while also reducing costs and facilitating layout wiring and module miniaturization.

[0076] In some possible implementations, in the sixteenth state, the received signal of the first frequency band sequentially passes through the first antenna, the second switching switch, the first switching switch, the first filter, the second switch, the first low-noise amplifier, and the first multiplexer switch before entering the first radio frequency chip; wherein, the second switch is the switch in the first switching assembly corresponding to the first frequency band.

[0077] In the aforementioned RF front-end module, the received signal of the first frequency band can reuse the first filter when the first switching switch is turned on. Therefore, there is no need to introduce an additional filter for the first frequency band, which reduces costs while ensuring low insertion loss in the path, thereby ensuring high receiving sensitivity. In addition, not introducing an additional filter for the first frequency band also ensures that the layout and wiring difficulty is not increased, which is conducive to module miniaturization.

[0078] In some possible implementations, the RF front-end module further includes: a third switching switch; the third switching switch is coupled to the first transmitting module and the second switching switch respectively; the third switching switch is configured to switch the path of the transmitting signal of the first frequency band; in the seventeenth state, the transmitting signal of the first frequency band passes through the first transmitting module, the third switching switch, and the second switching switch in sequence to the first antenna.

[0079] The transmitted signal in the first frequency band can sequentially pass through the PA, switch, filter, and antenna switch in the first transmitting module, and then be transmitted through the third switching switch (e.g., switch 1016), the second auxiliary port of the first antenna switch, and the first auxiliary port of the first antenna switch to the first antenna for transmission. Taking B40 as an example, the transmitted signal of B40 can sequentially pass through PA1026, switch 1024, filter 1024, and antenna switch 1017 in the first transmitting module, and then be transmitted through switch 1016 and switch 1013 to the B40 DM antenna for transmission.

[0080] The transmission signal of the first frequency band is switched via a first switching switch to enable transmission through a first antenna used independently in the first frequency band. This ensures the antenna performance of the first frequency band without the need for additional filters, thus ensuring low cost and low insertion loss. Furthermore, avoiding additional filtering also ensures no increase in layout and wiring complexity, facilitating module miniaturization.

[0081] In some possible implementations, the first receiving module further includes a fourth switching switch, and the RF front-end module further includes a fifth switching switch; the fourth switching switch is coupled to the second filter, the first antenna switch, and the fifth switching switch respectively; the fifth switching switch is also coupled to the sixth antenna and the fourth switching switch; the fourth switching switch is also coupled to the second filter and the first antenna switch; the sixth antenna is used to receive received signals in the second frequency band; the second antenna is used to receive received signals in frequency bands other than the first and second frequency bands.

[0082] When there are two frequency bands that require separate antennas, the second antenna is used to transmit and receive signals in frequency bands other than the first and second frequency bands. Taking the second frequency band as B41 as an example, the second filter can be filter 1009.

[0083] The first receiving module may include a fourth switching switch, which may be switch 1012. The RF front-end module may also include a fifth switching switch, which may be switch 1015. Optionally, switch 1012 may be an SPDT, and switch 1015 may also be an SPDT.

[0084] In this RF front-end module, switching via the fourth switch enables transmission through a sixth antenna used independently in the second frequency band. This ensures antenna performance in the second frequency band without requiring additional filters, thus guaranteeing low cost and low insertion loss. Furthermore, avoiding additional filtering also minimizes layout and wiring complexity, facilitating module miniaturization.

[0085] In some possible implementations, in the eighteenth state, the received signal of the second frequency band sequentially passes through the sixth antenna, the fifth switching switch, the fourth switching switch, the second filter, the third switch, the second low-noise amplifier, and the first multiplexer switch before entering the first radio frequency chip; wherein, the third switch is the switch in the first switching assembly corresponding to the second frequency band, and the third switch and the second switch may be the same or different; the second low-noise amplifier is the low-noise amplifier in the first low-noise amplification assembly matched to the second frequency band, and the second low-noise amplifier and the first low-noise amplifier may be the same or different.

[0086] For a detailed description of the third switch, the second filter, and the second low-noise amplifier mentioned above, please refer to the relevant descriptions above, which will not be repeated here.

[0087] In the aforementioned RF front-end module, the received signal of the second frequency band is received through the sixth antenna, switched by the fifth switch, enters the fourth switch, is then multiplexed by the second filter, and finally passes through the second low-noise amplifier and the first multiplexing switch before entering the first RF chip. Therefore, there is no need to introduce an additional filter for the second frequency band, thus ensuring low cost while maintaining low insertion loss. Furthermore, avoiding additional filtering also ensures that the layout and wiring complexity are not increased, which is beneficial for module miniaturization.

[0088] In some possible implementations, the fifth switch is also coupled to the third switch; in the nineteenth state, the transmission signal of the first frequency band passes sequentially through the first transmission module, the third switch, and the fifth switch to the sixth antenna.

[0089] The third switch here can also be switch 1032. Optionally, switch 1032 can be SP3T.

[0090] In the aforementioned RF front-end module, the transmission of the second frequency band is output from the first transmission module, switched by the third switch to the fifth switch, and then transmitted via the sixth antenna after being switched by the fifth switch. Therefore, there is no need to introduce an additional filter for the second frequency band. The sixth antenna, which can be used independently for the second frequency band, can be polled simply by switching, ensuring the antenna performance of the second frequency band while also expanding the application scenarios.

[0091] Secondly, a radio frequency (RF) front-end module control method is provided, applied to the RF front-end module described in the first aspect. This method is used to control the RF front-end module to achieve any one of the states described in the first aspect.

[0092] Thirdly, a radio frequency front-end module control device is provided, including a unit composed of software and / or hardware, which is used to execute any one of the methods of the technical solutions described in the second aspect.

[0093] Fourthly, embodiments of this application provide a chip including a processor; the processor is used to read and execute a computer program stored in a memory to perform any of the methods described in the second aspect.

[0094] Optionally, the chip further includes a memory, which is connected to the processor via a circuit or wire.

[0095] Alternatively, the chip may further include a communication interface.

[0096] Optionally, the chip is a radio frequency chip (Modem).

[0097] Fifthly, an electronic device is provided, comprising: a processor, a memory, and an interface; the processor, memory, and interface cooperate with each other to enable the electronic device to perform any one of the methods described in the second aspect.

[0098] In a sixth aspect, an electronic device is provided, which includes any one of the radio frequency front-end modules described in the first aspect, or any one of the chips described in the fourth aspect.

[0099] In a seventh aspect, an electronic device is provided, which includes a first antenna and a second antenna, and also includes any one of the radio frequency front-end modules described in the first aspect.

[0100] Eighthly, a computer-readable storage medium is provided, wherein a computer program is stored therein, and when the computer program is executed by a processor, the processor performs any one of the methods described in the second aspect.

[0101] In a ninth aspect, a computer program product is provided, the computer program product comprising: computer program code, which, when executed on an electronic device, causes the electronic device to perform any one of the methods described in the second aspect. Attached Figure Description

[0102] Figure 1 This is a schematic diagram of an example of NSA networking provided in an embodiment of this application;

[0103] Figure 2 This is a schematic diagram illustrating multiple data transmission paths between a base station and an electronic device provided in an embodiment of this application;

[0104] Figure 3 This is a schematic diagram of the structure of an example radio frequency front-end module provided in an embodiment of this application;

[0105] Figure 4 This is a schematic diagram of the structure of a receiving module provided in an embodiment of this application;

[0106] Figure 5 This is a schematic diagram of another example of a radio frequency front-end module provided in the embodiments of this application;

[0107] Figure 6 This is a schematic diagram of another example of a radio frequency front-end module provided in the embodiments of this application;

[0108] Figure 7 This is a schematic diagram of a polling signal transmission path provided in an embodiment of this application;

[0109] Figure 8 This is another schematic diagram of the polling signal transmission path provided in the embodiments of this application;

[0110] Figure 9 This is another example of a B40 transceiver path provided in the embodiments of this application;

[0111] Figure 10 This is a schematic diagram of the transceiver path of B41 provided in an embodiment of this application;

[0112] Figure 11 This is a schematic diagram of the structure of another receiving module provided in the embodiments of this application;

[0113] Figure 12 This is another example of a B40 transceiver path provided in the embodiments of this application;

[0114] Figure 13 This is another example of a B41 transceiver path provided in the embodiments of this application;

[0115] Figure 14 This is a schematic diagram of the receiving path of B40 and B41 provided in an embodiment of this application;

[0116] Figure 15 These are schematic diagrams illustrating the structures of various receiving modules provided in the embodiments of this application;

[0117] Figure 16 This is a schematic diagram of the circuit state of the antenna switch in the receiving module provided in the embodiments of this application;

[0118] Figure 17 This is a schematic diagram of another example of the B40 transceiver path provided in the embodiments of this application;

[0119] Figure 18 This is a schematic diagram of a B40 / B41 transceiver path provided in an embodiment of this application;

[0120] Figure 19 This is a schematic diagram of another example of the B41 transceiver path provided in the embodiments of this application;

[0121] Figure 20 This is a schematic diagram of another example of the B40 transceiver path provided in the embodiments of this application;

[0122] Figure 21 This is a schematic diagram of another example of the B41 transceiver path provided in the embodiments of this application;

[0123] Figure 22 This is a schematic diagram of the structure of various receiving modules provided in the embodiments of this application.

[0124] Figure label:

[0125] First antenna switch: 1001;

[0126] First switching switch: 1002;

[0127] First filter: 1003;

[0128] Second switch: 1004;

[0129] First low-noise amplifier: 1005;

[0130] First multiplexer switch: 1006;

[0131] Second filter: 1009;

[0132] Fourth switch: 1012;

[0133] Second switch: 1013;

[0134] First polling switch: 1014;

[0135] Fifth polling switch: 1015;

[0136] Third switching switch: 1016 / 1032;

[0137] Second polling switch: 1033; Detailed Implementation

[0138] The technical solutions of the embodiments of this application will be described below with reference to the accompanying drawings. In the description of the embodiments of this application, unless otherwise stated, " / " means "or," for example, A / B can mean A or B; "and / or" in this text is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, and B existing alone. Furthermore, in the description of the embodiments of this application, "multiple" refers to two or more than two.

[0139] Hereinafter, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first," "second," or "third" may explicitly or implicitly include one or more of that feature.

[0140] The radio frequency front-end module provided in this application embodiment can be applied to electronic devices such as mobile phones, tablets, wearable devices, in-vehicle devices, augmented reality (AR) / virtual reality (VR) devices, laptops, ultra-mobile personal computers (UMPCs), netbooks, and personal digital assistants (PDAs). This application embodiment does not impose any restrictions on the specific type of electronic device. Electronic device 101 can also refer to access terminal, user unit, user station, mobile station, mobile station, remote station, remote terminal, mobile device, user terminal, terminal, wireless communication equipment, user agent, or user device. Electronic devices can also be cellular phones, cordless phones, session initiation protocol (SIP) phones, wireless local loop (WLL) stations, personal digital assistants (PDAs), handheld devices with wireless communication capabilities, computing devices, or other processing devices connected to a wireless modem, electronic devices in 5th-generation (5G) networks, or electronic devices in future evolved public land mobile networks (PLMNs), etc., and the embodiments of this application are not limited thereto.

[0141] With the advent of 5G (new radio, NR), the application of 5G communication is becoming increasingly widespread. Current 5G network deployment modes include: Standalone (SA) mode and Non-Standalone (NSA) mode. NSA mode accounts for a significant proportion. NSA network deployment refers to the deployment of 5G base stations on existing 4G base stations, requiring that 4G signals (e.g., B3 band signals, B39 band signals, etc.) and 5G signals (e.g., N40 band signals, N41 band signals, etc.) can work together. Some operators are using a combination of Long Term Evolution (LTE) and 5G NR dual connectivity (ENDC) for NSA networking.

[0142] Figure 1This is a schematic diagram of the architecture of a mobile communication system under the NSA networking mode. For example... Figure 1 As shown, the electronic device 101 in this mobile communication system can simultaneously transmit and receive data with network devices of multiple standards. For example, the mobile communication system may include the electronic device 101, an LTE base station 102, and an NR base station 103. The electronic device 101 can communicate simultaneously with both the LTE base station 102 and the NR base station 103. The LTE base station 102 and the NR base station 103 represent two different network standards.

[0143] Optionally, in an NSA scenario, the communication system may also include a core network, which can be a 4G core network. In connected mode, electronic devices can simultaneously use the radio resources of at least two different base stations (divided into master and slave stations). However, the NR base station 103 cannot directly establish a connection with the core network; it needs to connect to the core network through the LTE base station 102. In this case, the user plane and control plane of the NR base station 103 may need to be connected by the LTE base station. In another scenario, the user plane of the NR base station 103 can connect to the core network, while the control plane continues to connect to the LTE base station 102. That is, the electronic device 101 needs to communicate simultaneously with both the LTE base station 102 and the NR base station 103 to obtain information.

[0144] Alternatively, in another NSA networking possibility, the core network can be a 5G core network, the user plane and control plane of NR base station 103 are connected to the core network, the control plane of LTE base station 102 can be connected to NR base station 103, and the user plane can be connected to the core network or NR base station 103.

[0145] In 5G networks, sub-6GHz frequency bands (such as the 3.5GHz or 5GHz bands) experience significant signal attenuation during transmission, severely impacting uplink data transmission for electronic devices. In scenarios where an electronic device's antenna is blocked by a person's head, hand, or other body part, the device can switch its transmitting antenna to an unobstructed one. This effectively improves performance and enhances user experience. Therefore, the base station can perform directional transmission to the electronic device. The device can then use the Sounding Reference Signal (SRS) function to feed back information to the base station, estimating uplink timing advance and utilizing channel symmetry to estimate downlink channel quality. The base station can allocate resource blocks (RBs) with good instantaneous channel conditions to the electronic device's uplink PUSCH for data transmission, while selecting appropriate transmission parameters. For the electronic device, this requires round-robin transmission of SRS signals using different antennas (also known as SRS polling). For example, an electronic device may have four mid-to-high frequency (MHB) antennas. The SRS signal of the B41 needs to be able to be transmitted from all four MHB antennas so that the best-performing antenna can be selected for communication at different times. Furthermore, for the same frequency band, the amplitude of the SRS signal output by the RF front-end module may be the same or similar to ensure the accuracy of the network side's assessment of the electronic device's air interface transmission channel.

[0146] Furthermore, in MIMO scenarios, both the transmitting and receiving ends use multiple antennas to form an antenna system with multiple transmission and reception paths between the transceiver devices. For example... Figure 2 As shown, Figure 2 The example uses a base station as an example of a transmitter and an electronic device as an example, both of which have four antennas. The electronic device transmits through transmitting antenna 1, transmitting antenna 2, transmitting antenna 3, and transmitting antenna 4, while the base station receives signals through receiving antenna 1, receiving antenna 2, receiving antenna 3, and receiving antenna 4. Figure 2In the diagram, the propagation path between transmitting antenna 1 and receiving antenna 1 is designated as path 1; the propagation path between transmitting antenna 2 and receiving antenna 1 is designated as path 2; the propagation path between transmitting antenna 3 and receiving antenna 1 is designated as path 3; the propagation path between transmitting antenna 4 and receiving antenna 1 is designated as path 4; the propagation path between transmitting antenna 1 and receiving antenna 2 is designated as path 5; the propagation path between transmitting antenna 2 and receiving antenna 2 is designated as path 6; the propagation path between transmitting antenna 3 and receiving antenna 2 is designated as path 7; the propagation path between transmitting antenna 4 and receiving antenna 2 is designated as path 8; and the propagation path between transmitting antenna 1 and receiving antenna 3 is designated as path 8. The propagation path between transmitting antenna 1 and receiving antenna 3 is designated as path 9; the propagation path between transmitting antenna 2 and receiving antenna 3 is designated as path 10; the propagation path between transmitting antenna 3 and receiving antenna 3 is designated as path 11; the propagation path between transmitting antenna 4 and receiving antenna 3 is designated as path 12; the propagation path between transmitting antenna 1 and receiving antenna 4 is designated as path 13; the propagation path between transmitting antenna 2 and receiving antenna 4 is designated as path 14; the propagation path between transmitting antenna 3 and receiving antenna 4 is designated as path 15; and the propagation path between transmitting antenna 4 and receiving antenna 4 is designated as path 16. This base station and electronic device transceiver system has sixteen paths available for data transmission. It should be noted that transmitting antennas 1, 2, 3, and 4 can also function as receiving antennas to receive signals transmitted by the base station; and receiving antennas 1, 2, 3, and 4 can also function as transmitting antennas to transmit signals to the base station. Of course, within the same electronic device, antennas used for receiving and transmitting may be shared. Signals of different frequency bands can be received simultaneously through multiple antennas, and signals can also be transmitted simultaneously through these multiple antennas.

[0147] It can be seen that with the use of 5G frequency bands and the application of MIMO technology, the number of antennas on electronic devices is increasing, and the complexity of antenna switching is also increasing. Faced with the increasingly complex requirements of electronic devices in terms of standards and frequency bands, multiple frequency bands can be shared by a single antenna within the limited size of the electronic device.

[0148] Specifically, antennas on electronic devices can be used to transmit and receive radio frequency (RF) signals. The circuit module connected to the antenna in an electronic device can be called an RF front-end module. The RF front-end module includes multiple transmit paths and multiple receive paths, which are used to amplify and filter the RF signals transmitted and received by the antenna, while also providing path switching functionality to achieve antenna switching and RF path compatibility.

[0149] To provide a clear description of the technical solution of this application, the frequency bands involved in the technical solution of this application will be introduced first:

[0150] Low band (LB): generally refers to communication frequency bands with low frequencies, such as GSM850, GSM900, LTEB5, LTEB8, etc., which have frequencies below 1GHz.

[0151] Mid-band (MB): Generally refers to communication frequency bands between 1.7GHz and 2.2GHz, such as LTE B1, B3, NR N1, N2, N3, etc.

[0152] High-frequency band (HB): generally refers to communication frequency bands between 2.3G and 2.7G, such as LTE B7, NR N40, NR N41 and other frequency bands.

[0153] Middle high band (MHB): The intermediate frequency band and the high frequency band can usually share some paths or antennas, and are collectively referred to as the middle high frequency band.

[0154] In some cases, there are not necessarily strict boundaries between low-frequency bands, mid-frequency bands, and high-frequency bands, and there may be overlaps at the edges of the frequency range.

[0155] In some embodiments, the radio frequency front-end module may include an MHB transmitting module and an MHB receiving module for processing radio frequency signals in the MHB band. Figure 3 This is a schematic diagram of the circuit structure of an example MHB (Medium Frequency) transmitter module. Specifically, the MHB transmitter module includes a transmission path for intermediate frequency (IF) signals and a transmission path for high-frequency (HF) signals, as well as a receiving path for IF signals and a receiving path for HF signals. The transmission path is the path through which the transmitted signal flows, and the receiving path is the path through which the received signal flows. Optionally, transmission and receiving paths in different frequency bands may be partially multiplexed; transmission and receiving paths in the same frequency band may also be partially multiplexed. Optionally, when the electronic device supports LB (Left-Band) band communication, the RF front-end module may also include an LB transmitter module and an LB receiver module for processing LB band signals.

[0156] Next, based on the structure of the RF front-end module, the functions of the components involved in the RF front-end module will be introduced: such as Figure 3 As shown, the MHB transmitter module includes: antenna switch, multiplexer, filter assembly, power amplifier (PA), low noise amplifier (LNA) and other switches.

[0157] Antenna switch: An antenna switch is a type of radio frequency switch that is directly or indirectly connected to an antenna and is mainly used to switch between transmitting and receiving antennas. Figure 3The example shown is a double-pole multi-throw (DPXT) antenna switch. The various switches involved in this application embodiment can be named and distinguished according to the number of ports. Multi-port switches can be collectively referred to as XPXT. Here, X represents the number of ports on one side of the switch. When X is 1, it can be replaced by S (single); when X is 2, it can be replaced by D (double); when X is 3 or a larger number, it can be represented by a specific number, such as 4, 5, or other natural numbers. Using X directly in the switch name indicates that the number of ports is not limited. For example, SPDT represents a single-pole double-throw (SPDT) switch, 3P3T represents a triple-pole triple-throw (TPST) switch, DPXT represents a double-pole multi-throw (DPXT) switch, and SPXT represents a single-pole multi-throw (SPXT) switch.

[0158] Filtering components: These may include filters, duplexers, and / or quadplexers, used to filter out unwanted spurious signals and retain the desired radio frequency signals. Filters are two-port components capable of selecting signals within a frequency band. When the signal frequency falls within the filter's passband, the filter can pass signals of that frequency, meaning signals of that frequency can pass through the filter with low loss. When the signal frequency falls within the filter's stopband (i.e., outside the passband), the filter can suppress signals of that frequency, meaning signals passing through the filter are significantly attenuated.

[0159] A duplexer is a three-port device. The common terminal of a duplexer can select signals from at least two frequency bands; one discrete terminal can select signals from the first frequency band and suppress signals from the second frequency band; while the other discrete terminal can select signals from the second frequency band and suppress signals from the first frequency band.

[0160] Quadruple transducer: A quadruple transducer is a five-port component. The common terminal of a quadruple transducer can select signals from at least four frequency bands; each discrete terminal can select a signal from one corresponding frequency band of the four frequency bands and suppress signals from the other three frequency bands.

[0161] PA: PA is used to amplify the power of the input signal and can be applied to the transmission path.

[0162] LNA: An LNA is a power amplifier with a low noise figure. While amplifying signal power, an LNA can also suppress noise and can be used in small signal receiving paths.

[0163] Other switches may also be included in the transmission path of the MHB transmitter module, such as gating switches that connect different filter components and PAs.

[0164] The receiving path of the MHB transmitter module may also include other switches, such as gating switches connecting the filter components and the LNA, and multiplexers (MUX) connecting the LNA and the RF chip. MUX can also be called a multiplexing switch.

[0165] In the RF front-end module, a single MB PA can be used to amplify the power of transmit signals from multiple MB bands, or a single HB PA can be used to amplify the power of transmit signals from the HB band. The amplified transmit signals can be switched to the corresponding filter components for filtering, and then transmitted to the corresponding antenna for radiation via antenna switching. Similarly, a single LNA can be used in the RF front-end module to amplify the low-noise receive signals from multiple different frequency bands with similar frequencies. The amplified receive signals are then switched by a MUX and enter the corresponding port of the RF chip.

[0166] exist Figure 3 In the MHB transmitter module shown, when the electronic device transmits an intermediate frequency (IF) signal, the IF signal is emitted from the output port corresponding to the IF signal of the RF chip, and then enters the IF amplifier (MB PA) 301 from the input terminal (MB_TX_IN) of the MHB transmitter module for amplification. Afterwards, the IF signal is switched via the IF band switch (MB_band_switch) 303 and enters the corresponding filtering component (e.g., one of a quadplexer 305, duplexer 306, filter 307, filter 308, or filter 309) for filtering. The filtered IF signal is then switched to the corresponding antenna port (e.g., ANT1 or ANT2) via DPXT 310 and transmitted through the antenna (antenna 1 or antenna 2) connected to the antenna port.

[0167] When an electronic device transmits a high-frequency signal, the high-frequency signal is emitted from the output port corresponding to the high-frequency signal of the RF chip and enters the high-frequency amplifier (HB PA) 302 from the input terminal (HB_TX_IN) of the MHB transmitter module for amplification. Then, via the switching of the high-frequency band switch (HB_band_switch) 304, it enters the corresponding filtering component (e.g., one of a quadplexer 305, duplexer 306, filter 307, filter 308, or filter 309) for filtering. For example, the transmission signal of B40 can enter filter 308 through the switching of switch 304, and the transmission signal of B41 can enter filter 309 through the switching of switch 304. The filtered high-frequency signal is then switched to the corresponding antenna port (e.g., ANT1 or ANT2) through DPXT 310 and transmitted through the antenna (antenna 1 or antenna 2) connected to the antenna port.

[0168] It should be noted that the signal emitted by the radio frequency chip is called the transmitted signal, and the signal received by the radio frequency chip is called the received signal.

[0169] It should be noted that, Figure 3 Each filter component in the DPXT310 has one end (e.g., the common terminal of a duplexer or quadplexer) connected to one of its multiple ports (discrete ports). The other end of each filter component (e.g., the discrete terminal of a duplexer or quadplexer) is also connected to multiple discrete ports of switches 303, 304, 313, and 314. It should be noted that for Time Division Multiplexing (TDD) frequency bands, the transmit and receive paths can save costs by multiplexing the same filter. Figure 3 The example shown uses filters that reuse their respective frequency bands, B40 and B41. To clearly illustrate the connection relationship between the transmit and receive paths of the B40 and B41 frequency bands, Figure 3 The connection methods of the intermediate filtering components and the discrete ports of switches 303, 304, 313 and 314 for other frequency bands will not be exemplified. As long as the selection of the transmission and reception paths for other frequency bands can be ensured, it is acceptable.

[0170] When the electronic device is in receiving mode, the DPXT310 switches the received signal (IF band or HF band) from the antenna to the corresponding filtering component (e.g., one of quadrupler 305, duplexer 306, filter 307, filter 308, or filter 309) for filtering. For the frequency division (FDD) band, the filtered received signal is switched by the switch (switch 311 or 312) connected to the filtering component, and then enters the corresponding LNA (one of LAN_1 to LNA_n, such as LNA313 or LAN314) for low-noise amplification. Then, via the switch of MUX315, it enters the RF chip for processing through the corresponding port (e.g., one of LAN_OUT_1 to LAN_OUT_n).

[0171] For Time Division Multiplexing (TDD) frequency bands, taking B40 as an example: The received signal from B40 can be received by antenna 1 or antenna 2, then filtered by filter 308 after switching via DPXT310. The filtered received signal from B40 then enters switch 304, and after switching via switch 304, enters switch 311. It is then input to LNA313 from the common terminal of switch 311 for low-noise amplification. Afterwards, the received signal from B40 is switched via MUX315 and enters the corresponding input port of the RF chip from port LAN_OUT_1. Similarly, the received signal from B41 can be received by antenna 1 or antenna 2, then filtered by filter 309 after switching via DPXT310. The filtered received signal from B41 enters switch 304, and after switching via switch 304, enters switch 311. It is then input to LNA313 from the common terminal of switch 311 for low-noise amplification. Afterwards, the received signal from B41 is switched via MUX315 and enters the corresponding input port of the RF chip from port LAN_OUT_1.

[0172] It should be noted that since the frequency bands of B40 and B41 are TDD bands, the transmit and receive paths can share the same filter (e.g., filter 308 or filter 309). For other TDD bands, when the transmit and receive paths share a single filter, the filtered received signal can be switched to switch 311 or switch 312 via switch 303. For details, please refer to the connection method of the receive paths of B40 and B41; it will not be repeated here. For the FDD band, after the received signal is selected by the port corresponding to the receive frequency band of the duplexer or quadplexer, it directly enters switch 311 or switch 314, and after switching via switch 311 or switch 314, it enters the corresponding LNA. Then, it enters the RF chip for processing via switching via MUX315.

[0173] In the above Figure 3 Based on the MHB transmitter module shown, the RF front-end module also includes an MHB receiver module. The antenna ports of the MHB transmitter and MHB receiver modules can be directly or indirectly connected to different antennas. Specifically, the MHB receiver module includes a receive path, which can be used to process the received signal from the antenna in MIMO scenarios. In some scenarios, such as SRS polling, the antenna switch in the MHB receiver module can also switch the transmit signal transmitted by the MHB transmitter module to the antenna connected to the MHB receiver module for transmission.

[0174] Figure 4 Figure a shows a schematic diagram of the circuit structure of an example MHB receiver module. Specifically, the MHB receiver module includes an intermediate frequency (IF) signal receiving path and a high-frequency (HF) signal receiving path. For example... Figure 4 As shown in Figure a, the MHB receiver module includes: DPXT, filter components, LNA, and switch.

[0175] In receive mode, the DPXT401 switches the received signal (IF or HF signal) from the antenna to one of the following frequency band-specific duplexers 402, 403, filter 404, or filter 405 for filtering. Then, via switch 406 or 407, the signal enters the corresponding LNA (one of LAN_1 to LNA_n, such as LNA408 or LAN409) for low-noise amplification. Finally, the received signal is switched by the MUX410 and enters the RF chip for processing through the corresponding port (any one of LAN_OUT_1 to LAN_OUT_n).

[0176] Figure 4 Figure b in the diagram shows a schematic of the circuit structure of an example MHB receiver module. The MHB receiver module also includes receiving paths for intermediate frequency (IF) and high frequency (HF) signals. For example... Figure 4 As shown in Figure b, the MHB receiver module includes: an antenna switch, a filter assembly, an LNA, and a switch.

[0177] Figure 4 In Figure b, the SPXT antenna switch is used as an example. In receive mode, the SPXT411 switches the received signal (IF or HF signal) from the antenna to one of the following frequency band-corresponding duplexers 412, 413, filter 414, or filter 415 for filtering. Then, through switching 416 or 417, the signal enters the corresponding LNA (one of LAN_1 to LNA_n, such as LNA418 or LAN419) for low-noise amplification. The received signal is then switched by the MUX420 and enters the RF chip for processing through the corresponding port (any one of LAN_OUT_1 to LAN_OUT_n).

[0178] It should be noted that the above Figure 3 and Figure 4 In order to simplify circuit representation and avoid excessive wiring that would make circuit diagram observation difficult, the connection relationships between the ports of filter components and switches can be determined by defining the net names of each port. Specifically, ports (or pins) with the same net name are interconnected. For example, in... Figure 3In the above, the port marked "B40" on switch 304 and the port marked "B40" on filter 308 share the same network name "B40," therefore these two ports are electrically connected, and there is an RF trace between them; the port marked "B41" on switch 304 and the port marked "B41" on filter 309 share the same network name "B41," therefore these two ports are electrically connected, and there is an RF trace between them; the port marked "Bn" on switch 303 and the port marked "Bn" on quadrupole 305 share the same network name "Bn," therefore these two ports are electrically connected, and there is an RF trace between them. Figure 3 and Figure 4 Undefined ports are not necessarily floating ports. The network names corresponding to each floating port can be assigned according to the frequency bands supported by the electronic device, which will not be elaborated here.

[0179] The above Figure 3 and Figure 4 The circuit shown also includes a control circuit (not shown). This control circuit comprises multiple control signal lines, which are connected to multiple components and an RF chip. These lines transmit control signals output from the RF chip to the corresponding components to control their operating states. For example, the control signal line connecting the switch and the RF chip transmits control signals to the switch to control its circuit switching; the control signal line connecting the power amplifier (PA) and the RF chip transmits control signals to the PA to control its ON / OFF state and gain level switching; and the control signal line connecting the low-voltage amplifier (LNA) and the RF chip transmits control signals to the LNA to control its ON / OFF state and gain level switching.

[0180] Optionally, the specific structures of the aforementioned MHB transmitting and receiving modules can vary depending on the frequency band combinations supported by the electronic equipment. For example, the number of switch ports can be adjusted based on the supported frequency bands, frequency band combinations, and the number of paths required for MIMO scenarios to meet switching requirements. Furthermore, the antenna switch in the receiving module can be a single-pole multi-throw (SPXT) or a double-pole multi-throw (DPXT) switch. Also, the type and number of filter components can be selected based on the frequency bands supported by the electronic equipment. Moreover, the number of LNAs and PAs and the corresponding frequency bands can also be adjusted based on the frequency bands supported by the electronic equipment.

[0181] The circuit structure of the transmitting and receiving modules has been introduced above. Next, we will explain the specific applications and working status of the transmitting and receiving modules in the RF front-end module in combination with specific application scenarios.

[0182] Taking the ENDC scenario as an example, both LTE and NR standards need to operate simultaneously. The LTE frequency band serves as an anchor frequency, primarily for data synchronization; the NR frequency band is used for data transmission. However, the control logic for the LTE and NR RF paths in the electronic device operates as two independent mechanisms. To support simultaneous LTE and NR operation, two transmit modules are required. When both LTE and NR standards perform antenna switching simultaneously in the electronic device, simultaneous transmission occurs in the ENDC scenario. Therefore, the NR and LTE antennas need to be switched appropriately to meet communication requirements. Simultaneously, LTE and NR each require four receive paths. Specifically, two transmit modules are compatible with two receive paths, while the other two receive paths are implemented by two separate receive modules. Therefore, to achieve the ENDC functionality, the RF front-end module requires two transmit modules and two receive modules. For details, please refer to [link to relevant documentation]. Figure 5 As shown.

[0183] Figure 5 The diagram illustrates the necessary modules for mid-to-high frequency bands, including: a first transmitting module, a first receiving module, a second transmitting module, and a second receiving module. The first transmitting module and the first receiving module can work together in a communication system, such as LTE; the second transmitting module and the second receiving module can work together in a communication system, such as NR. Figure 5 The radio frequency front-end module also includes two switches that connect the various transmitting and receiving modules. Figure 5 The two switches are used as an example of 3P3T.

[0184] Taking an electronic device with four antennas—a primary radiation antenna (PRX), a diversity antenna (DRX), a primary MIMO (PM) antenna, and a diversity MIMO (DM) antenna—as an example, the first transmitting module is connected to the PM antenna, and the second transmitting module is connected to the PRX antenna. The first receiving module is connected to the DM antenna, and the second receiving module can be connected to the DRX antenna. Optionally, the first transmitting module can serve as the main transmitting module for NR, and the first transmitting module and the first receiving module are connected to the first radio frequency chip; the second transmitting module can serve as the main transmitting module for LTE, and the second transmitting module and the second receiving module are connected to the second radio frequency chip. For details, please refer to [example missing]. Figure 6 As shown. Figure 6 The internal structure of the transmitting and receiving modules can be found in the reference. Figure 5 Examples of the structure and connection relationships of the corresponding modules, Figure 6 Examples will not be provided here.

[0185] Figure 5The second transmitting module includes: PA501 for the intermediate frequency band, PA502 for the high frequency band, switch 503, switch 504, filtering components (quadruple converter 505, duplexer 506, filter 507, filter 508, and filter 509), DPXT510, switch 511, switch 512, low-noise amplifier components (e.g., LNA513, LNA514), and MUX515. For details on the connections and operating principles of the components in the second transmitting module, please refer to [link to relevant documentation]. Figure 3 The relevant description of the first launch module is omitted here.

[0186] Figure 5 The second receiving module includes: SPDX530, filtering components (e.g., duplexers 531 and 532, filters 533 and 534), switches 535 and 536, low-noise amplifier components (e.g., LNA537 and LNA538), and MUX539. For details on the connection relationships and operating principles of the components in the second receiving module, please refer to [link to relevant documentation]. Figure 4 The relevant description of the first launch module in section b is not repeated here.

[0187] In such Figure 5 In the RF front-end module shown, when the first transmit module performs SRS polling in a certain frequency band, the transmit path through which the transmit signal flows can be seen as follows: Figure 7 As shown by the thick solid line in the diagram. Figure 7 The connection methods of the transmitting module, receiving module and radio frequency chip in the embodiments of this application can also be referred to. Figure 6 As shown, the connection relationship between the front-end module and the RF chip is not shown again. In... Figure 5 In the RF front-end module shown, when the second transmitter module performs SRS polling, the transmission path after the transmission signal is output from the first transmitter module can be found in [reference needed]. Figure 7 As shown by the thick solid line in the image. Figure 7 In the process, when the first transmission module performs SRS polling, the four transmission paths include: transmission path A-1 to transmission path A-4; when the second transmission module performs SRS polling, the four transmission paths can be as follows: Figure 8 As shown by the thick solid lines, it includes: transmission paths A-5 to A-8. Figure 7 and Figure 8 The example uses the SRS polling transmission channels of the HB band B40. Transmission paths A-1 to A-4 are detailed below:

[0188] Transmission Path A-1: ​​After the transmission signal is output from the first RF chip, it is amplified by the PA corresponding to the frequency of the transmission signal in the first transmission module (HB band corresponds to HB PA302, MB band corresponds to MB PA301, for example, B40 corresponds to HB PA302). The amplified transmission signal is switched by switch 303 or switch 304 (B40 is switched by switch 304) and enters the corresponding filtering component (e.g., quadplexer 305, duplexer 306, filter 307, filter 308 or filter 309, B40 corresponds to filter 308, B41 corresponds to filter 309) for filtering. The filtered transmission signal is switched by DPXT310 and output from DPXT310 to the antenna port ANT1 of the first transmission module, and then input to port 4 of switch 522. After switching by switch 522, the transmission signal is transmitted from port 1 of switch 522 to the PM antenna for transmission.

[0189] Transmit path A-2: After the transmit signal is output from the first RF chip, the path before reaching switch 522 is the same as transmit path A-1. The difference is that the transmit signal is switched by switch 522, output from port 2 of switch 522, and enters the transceiver port TRX of the first receiving module. The transmit signal is input from the transceiver port TRX of the first receiving module, enters the DPXT401 of the first receiving module, and is switched by DPXT401 before being output from DPXT401 to the antenna port ANT1 of the first transmitting module, and then transmitted to the DM antenna for transmission.

[0190] Transmission Path A-3: The path of the transmitted signal from the first RF chip to DPXT310 is the same as transmission path A-1. The difference is that the transmitted signal is switched by DPXT310, output from DPXT310 to the antenna port ANT2 of the first transmission module, and then enters the SRS input port (or SRS_IN port, e.g., B40 / B41 SRS_IN port) of the second transmission module. The transmitted signal is input from the SRS_IN port of the second transmission module and enters switch 504 through port 2 of switch 504 of the second transmission module. After being switched by switch 504, the transmitted signal is output from a discrete port of switch 504 (e.g., port 6 for the transmitted signal of B40, port 5 for the transmitted signal of B41), and enters the corresponding filtering components (e.g., quadplexer 505, duplexer 506, filter 507, filter 508 or filter 509, where the transmitted signal of B40 corresponds to filter 508, and the transmitted signal of B41 corresponds to filter 509) for filtering. After filtering, the transmit signal enters the DPXT510 in the second transmit module. Then, the transmit signal is switched by the DPXT510, and the output of the DPXT510 is sent to the antenna port ANT1 of the second transmit module, and then transmitted to the PRX antenna for transmission.

[0191] Transmit path A-4: After the transmit signal is output from the first RF chip, the path before reaching DPXT510 is the same as transmit path A-3. The difference is that the transmit signal is switched by DPXT510 and output from the antenna port ANT2 of DPXT510 to switch 521. The transmit signal enters switch 521 from port 5, and after being switched by switch 521, it is transmitted from port 3 of switch 521 to the DRX antenna for transmission.

[0192] It should be noted that, in Figure 7 In this context, by introducing an SRS_IN port (e.g., B40 / B41 SRS_IN port) into the transmission module to implement SRS polling, it is possible to ensure that the diversity reception path of LTE is not interrupted when NSA (e.g., LTE B3+N41) networking is used.

[0193] See also Figure 8 The specific details of transmission paths A-5 to A-8 are as follows:

[0194] Transmission path A-5: After the transmission signal is output from the second RF chip, it is amplified by the PA corresponding to the frequency of the transmission signal in the second transmission module (HB band corresponds to HB PA502, MB band corresponds to MB PA501, for example, B40 corresponds to HB PA302). The amplified RF signal is switched by switch 503 or switch 504 (B40 corresponds to switch 504) and enters the corresponding filtering component (e.g., quadplexer 305, duplexer 306, filter 307, filter 308 or filter 309, B40 corresponds to filter 308, B41 corresponds to filter 309) for filtering. The filtered transmission signal is switched by DPXT510 and output from DPXT510 of the second transmission module to the antenna port ANT1 of the second transmission module, and then transmitted to the PRX antenna for transmission.

[0195] Transmit path A-6: The path from the output of the second RF chip to DPXT510 is the same as transmit path A-5. The difference is that the transmit signal is switched by DPXT510 and output to the antenna port ANT2 of the second transmit module. Then, it is input to switch 521 from port 5, and transmitted to the DRX antenna from port 3 of switch 521 for transmission.

[0196] Transmission path A-7: After the transmission signal is output from the second RF chip, the path before reaching switch 521 is the same as transmission path A-6. The difference is that the transmission signal is switched by switch 521, output from port 1 of switch 521, and enters switch 522 through port 6 of switch 522. After being switched by switch 522, the transmission signal is transmitted from port 1 of switch 522 to the PM antenna for transmission.

[0197] Transmit path A-8: After the transmit signal is output from the second RF chip, the path before reaching switch 522 is the same as transmit path A-7. The difference is that after being switched by switch 522, the transmit signal is output from port 2 of switch 522 and then enters the transceiver port TRX of the first receiving module. The transmit signal is input from the transceiver port TRX of the first receiving module to DPXT401, switched by DPXT401, and output from DPXT401 to the antenna port ANT1 of the first receiving module, and then transmitted to the DM antenna for transmission.

[0198] However, because the four antennas used by the MHB are distributed in different locations on the electronic equipment, sharing an antenna with multiple frequency bands can lead to poor antenna performance on some frequency bands, potentially failing to meet communication requirements. In such cases, a separate antenna can be designed for the frequency band with poor performance to ensure antenna performance in that band. However, if only one antenna is used for this frequency band, multiple additional components are needed to implement path switching.

[0199] For example, the DM antenna for the MHB and the 2.4G Wi-Fi signal can share the same antenna using a combiner, collectively referred to as the DM antenna. The MHB frequency range is 1700-2690MHz, while the 2.4G Wi-Fi frequency range is 2400-2500MHz. Since the B40 band's frequency range is 2300-2400MHz, the high-frequency channels within the B40 band are close to the frequencies of the 2.4G Wi-Fi signal, which can easily lead to undetectable signals on the high-frequency channels of the B40. In this case, using a separate antenna for the B40 (called the B40 DM antenna) can ensure the antenna performance of the B40, thereby ensuring normal communication on the high-frequency channels of the B40.

[0200] like Figure 9As shown, when B40 uses only a single B40 DM antenna, three additional components are required: switch 523, switch 524, and filter 525 for B40. Optionally, switch 523 and switch 524 can be SPDTs. When B40 switches antennas, the B40's transmit signal, which was originally transmitted using the DM antenna, does not need to be transmitted from the antenna port ANT1 of the first transmit module to the DM antenna. Instead, it can be output from the DPXT310 of the first transmit module to the antenna port ANT2 of the first transmit module, and then enter switch 524. After switching by switch 524, the B40's transmit signal is output from port 2 of switch 524 to port 2 of switch 523. Then, after switching by switch 523, the B40's transmit signal can be output from port 1 of switch 523 to the B40 DM antenna for transmission.

[0201] In receive mode, the B40 receives the signal from the B40 DM antenna, switches via switch 523, outputs from port 2 of switch 523, and is filtered by filter 525. The filtered B40 received signal is then switched via switch 407 to LNA409 for low-noise amplification, and then switched via MUX410 to output from the corresponding port and enter the first RF chip. The B40's transmit and receive paths via the B40 DM antenna can be found in [reference needed]. Figure 9 As shown by the thick solid line in the image.

[0202] It should be noted that the transmission path of the B40 transmission signal shown in this embodiment can also be applied to the transmission path of the N40 in an NSA scenario, and the reception path of the B40 reception signal can also be applied to the reception path of the N40 in an NSA scenario. In an NSA scenario, when the N40 frequency band is used for transmission, the LTE anchor frequency can be the B3 or B1 frequency band.

[0203] Optionally, see Figure 9The RF front-end module shown, when the first transmit module polls the PRX antenna and DRX antenna, the transmit signal of B40 passes through the first transmit module, is output from the antenna port ANT2 of the first transmit module, and then enters switch 524 through port 1. After switching switch 524, the B40 transmit signal is output from port 3 of switch 524, and then input to the SRS_IN port of the second transmit module. The B40 transmit signal is switched by switch 504 in the second transmit module, enters the filter 508 of B40, and then passes through the switch DPXT510, and is transmitted from the port of DPXT510 to ANT1 of the second transmit module, and then reaches the PRX antenna; the B40 transmit signal can also be switched by switch 504 in the second transmit module, enter the filter 508 of B40, pass through the switch DPXT510, and be transmitted from the port of DPXT510 to ANT2 of the second transmit module, and then reach the DRX antenna through the switch 521, which will not be elaborated here.

[0204] It should be noted that in radio frequency (RF) circuits, the antenna may receive signals from more than one frequency band at the same time, or it may receive a mixture of signals from multiple frequency bands. Since the electronic device needs to receive signals from a specific frequency band at any given time, the switch on the receiving path in the RF front-end module can, under the control of a control signal, open the receiving path corresponding to the current operating frequency band, allowing the received signal of the operating frequency band to enter the port of the corresponding RF chip. During this process, the filter set in the opened receiving path can filter the received signal, i.e., select the signal of the operating frequency band and suppress other non-operating frequency band signals. Furthermore, it should be noted that whether an antenna can receive signals from a certain frequency band is determined by the following: if an antenna has good performance in that frequency band, such as high gain and / or high antenna efficiency, and can meet communication requirements, then the antenna can receive signals from that frequency band; if the antenna has poor performance in that frequency band, such as low gain and / or low antenna efficiency, and cannot meet communication requirements, then the antenna cannot receive signals from that frequency band. Therefore, the signal received by the antenna in this application in a certain frequency band, before being filtered by a filter, is not actually limited to the signal in that frequency band, but refers to a mixed signal of multiple frequency bands that exist in the current working environment and include that frequency band.

[0205] exist Figure 9 Based on the example circuit structure, if the DM antenna performs poorly in another frequency band (e.g., B41), an additional antenna in a separate frequency band (e.g., a B41 DM antenna) can be added, and more components can be introduced accordingly. See [link to relevant documentation] for details. Figure 10 As shown.

[0206] Figure 10The examples illustrate this using a single B40 DM antenna for the B40 and a single B41 DM antenna for the B41. Figure 10 In addition to introducing switch 523 and filter 525, switch 526 and filter 527 required by B41 are also introduced. Optionally, switch 526 can be an SPDT. Meanwhile, switch 524 can be replaced with switch 527, which has more ports, to be compatible with the polling path of B41. For example, switch 527 can be an SP3T.

[0207] In use such Figure 10 When the circuit shown performs SRS polling on B40, the transmit path can be referenced. Figure 9 The relevant description of the embodiment. The difference is that the path that was originally switched by switch 524 is now switched to switch 523 by switch 528, which has more ports.

[0208] In use such Figure 10 When the circuit shown performs SRS polling of B41, the B41 transmit signal, which originally uses the DM antenna, can be output from the DPXT310 of the first transmit module to the antenna port ANT2 of the first transmit module. It then enters switch 528, and after being switched by switch 528, it is output from port 4 of switch 528 to port 2 of switch 526. Afterwards, the B41 transmit signal is switched by switch 526 and output from port 1 of switch 526 to the B41 DM antenna for transmission.

[0209] Additionally, when polling the PRX and DRX antennas, the B41 transmit signal can be switched via switch 528, inputting from port 3 of switch 528 to the SRS_IN port of the second transmit module, and then entering switch 504 of the second transmit module. After being switched by switch 504, the B41 transmit signal is output from port 5 of switch 504 and then filtered by filter 509. After filtering, the B41 transmit signal is switched via DPXT510 in the second transmit module, outputting from DPXT510 to the antenna port ANT1 of the second transmit module, and then transmitted to the PRX antenna for transmission. Alternatively, it can be transmitted from the antenna port ANT2 of DPXT510 to switch 521, and then, through the switching of switch 521, transmitted from port 3 of switch 521 to the DRX antenna for transmission.

[0210] In receive mode, the signal received by B41 is received from the B41 DM antenna, enters switch 526 through port 1, and is output from port 3 of switch 526 to filter 527 after switching. After filtering, the received signal from B41 enters switch 407. Correspondingly, switch 407 can also be replaced with a different switch. Figure 9Switch 407 has an additional port. The filtered received signal from B41 enters LNA409 for low-noise amplification through the switching of switch 407, and then is output from LNA_OUT_n to the first RF chip through the switching of MUX410.

[0211] This application provides a receiving module in which a switch is added between the DPXT and the filter corresponding to the frequency band using only a DM antenna to switch the receiving path. Taking B40 using only a B40 DM antenna as an example, the structure of this receiving module can be seen as follows. Figure 11 The first receiving module is shown in Figure a.

[0212] like Figure 11 As shown in Figure a, the first receiving module includes: an antenna switch, a filter assembly, one or more other switches, multiple LNAs, and a MUX. Figure 11 Figure a shows an example antenna switch, DPXT, denoted as DPXT1001. The filtering components are exemplified by filter 1003, duplexer 1007, duplexer 1008, and filter 1009. Optionally, the filtering components can be increased or decreased depending on the number of frequency bands required by the product specifications. For example, when a new frequency band needs to be added, a corresponding filtering component for the new frequency band can be added to the first receiving module, and the switches on the path of the first receiving module are replaced with components matching the number of ports; this will not be elaborated further here.

[0213] Multiple LNAs may include LNA1005 and / or LNA1011, and may also include other LNAs. Optionally, the number of LNAs in the first receiving module may increase or decrease depending on the frequency band required by the product specifications. Optionally, when a frequency band is added, if the newly added frequency band can also share an LNA with an existing frequency band, no new LNA needs to be added; when a frequency band is reduced, if the reduced frequency band still shares an LNA with other reserved frequency bands, no LNA needs to be reduced. Figure 11 The ellipsis indicates that the first receiving module may also have other components similar to the upper and lower components (such as LNA_2, LNA_3, etc.) or ports (such as LNA_OUT_2, LNA_OUT_3, etc.).

[0214] Figure 11The filter components, other switches, and types and quantities of LNAs shown in Figure a are for illustrative purposes only and will not be elaborated upon here. It should be noted that the received signal transmitted by each LNA, after being switched by the MUX, is output to the corresponding port of the first RF chip through a corresponding LNA_OUT port of the first receiving module. When a new frequency band LNA is added, the MUX also adds a corresponding port, which is connected to the corresponding port of the first RF chip to transmit the received signal to the first RF chip. Figure 11 In Figure a, other switches may include switches for connecting the LNA and the filter components, such as switch 1004 and switch 1010. Optionally, switch 1004 may be an SP4T and switch 1010 may be an SP3T. Figure 11 In Figure a, other switches may also include switches for connecting the filter components and the antenna switch, such as switch 1002. Optionally, switch 1002 may be an SPDT.

[0215] Next, with Figure 11 Using the circuit structure shown in Figure a as an example, the connection relationships between the components in the first receiving module are illustrated as follows: Port 1 of DPXT1001 is connected to the antenna port ANT1 of the first receiving module; Port 2 of DPXT1001 is connected to the antenna port ANT2 of the first receiving module; Port 3 of DPXT1001 is connected to the transmit / receive port TRX of the first receiving module; Port 4 of DPXT1001 is connected to Port 3 of switch 1002; Port 5 of DPXT1001 is connected to one port of filter 1009; Port 6 of DPXT1001 is connected to the common terminal of duplexer 1008; and Port 7 of DPXT1001 is connected to the common terminal of duplexer 1007. Port 1 (i.e., the common terminal) of switch 1002 is connected to one end of filter 1003; Port 2 of switch 1002 is connected to the auxiliary port AUX1 of the first receiving module; and Port 3 of switch 1002 is connected to Port 4 of DPXT1001. The two discrete ports of duplexer 1007 are connected to the two discrete ports (port 2 and port 3) of switch 1010, respectively. The two discrete ports of duplexer 1008 are connected to one discrete port (port 4) of switch 1010 and one discrete port (port 2) of switch 1004, respectively. The other port of filter 1003 and the other port of filter 1008 are connected to the two discrete ports (port 3 and port 4) of SP4T1004, respectively. The common port of switch 1010 is connected to the input port of LNA1011, and the common port of switch 1004 is connected to the input port of LNA1005. The output ports of LNA1011 and LNA1005 are connected to different ports of MUX1006, respectively.

[0216] When two frequency bands each use their own DM antennas, taking B40 using a single B40 DM antenna and B41 using a single B41 DM antenna as an example, the first receiving module can be referred to as follows: Figure 11 Figure b in the diagram.

[0217] and Figure 11 The difference between diagram a and diagram a is that, in Figure 11 In Figure b, a switch 1012 is added to switch the receiving path of B41. Optionally, switch 1012 can be an SPDT. Specifically, the common port (port 1) of switch 1012 is connected to one port of filter 1009. One discrete port (port 3) of switch 1012 is connected to port 5 of DPXT1001, and the other discrete port (port 2) is connected to the auxiliary port AUX2 of the first receiving module.

[0218] Next, for those containing Figure 11 The structure and operating status of the RF front-end module of the first receiving module, as shown in Figures a and b, are described in detail.

[0219] Figure 12 To include the above Figure 11 The circuit structure diagram of the radio frequency front-end module of the first receiving module shown in Figure a is shown below. Optionally, the radio frequency front-end module includes: a first transmitting module, a first receiving module, a second transmitting module, a second receiving module, switch 1013, switch 1014, switch 1016 and switch 1033.

[0220] Optionally, the first receiving module can be referred to as a MIMO LFEM, and the second receiving module can be referred to as a DRX LFEM (i.e., diversity LFEM). Here, the LFEM is an integrated component including an integrated RF switch, LNA, and filter. The first transmitting module can be referred to as MHB LPAMiD (i.e., mid-high frequency LNA, integrated multi-mode multi-band PA, and FEMiD, where FEMiD represents integrated RF switch, filter, and duplexer).

[0221] Optionally, such as Figure 12 As shown, switch 1013 can be an SPDT, switch 1014 can be a 3P3T, switch 1016 can be an SPDT, and switch 1033 can also be a 3P3T. Optionally, switches 1013, 1014, 1016, and 1033 can also be switches with other numbers of ports, as long as the path switching requirements can be met.

[0222] Specifically, port 1 of switch 1013 is connected to the B40 DM antenna; a discrete port of switch 1013, such as port 2, is connected to a discrete port of switch 1016, such as port 2; and another discrete port of switch 1013, such as port 3, is connected to the auxiliary port AUX1 of the first receiving module. The antenna port ANT1 of the first receiving module is connected to the DM antenna; the antenna port ANT2 of the first receiving module is connected to port 5 of 3P3T1014.

[0223] Specifically, port 1 of switch 1014 is connected to the PM antenna; port 2 of switch 1014 is connected to the TRX transceiver port of the first receiving module; port 3 of switch 1014 is connected to port 4 of switch 1033; port 4 of switch 1014 is connected to the antenna port ANT1 of the first transmitting module; port 5 of switch 1014 is connected to the antenna port ANT2 of the first receiving module; and port 6 of switch 1014 is connected to port 1 of switch 1033.

[0224] Specifically, port 2 of switch 1033 is connected to the transceiver port TRX of the second transmitting module; port 3 of switch 1033 is connected to the DRX antenna; port 5 of switch 1033 is connected to the antenna port ANT2 of the second transmitting module; and port 6 of switch 1033 is connected to the antenna port ANT1 of the second receiving module.

[0225] The common port (port 1) of switch 1016 is connected to the antenna port ANT2 of the first transmitting module; another discrete port (port 3) of switch 1016 is connected to the SRS_IN (B40 / B41 SRS_IN) port of the second transmitting module.

[0226] It should be noted that the connection between the components or ports described in the embodiments of this application can be a direct electrical connection between the two via RF traces. The width of the RF traces and their distance from the metal ground can be adjusted according to the frequency to ensure impedance matching. Alternatively, the two can be coupled (or linked), for example, indirectly connected through a matching circuit or other RF components. Optionally, other RF components can be couplers, filters, attenuation networks, or equivalent components. Optionally, the coupler is used for power detection of the signal on the path, the matching circuit is used for impedance matching, and the filter is used for filtering and path matching.

[0227] In the various RF front-end modules described in the embodiments of this application, the ports of the transmitting and receiving modules involved are not necessarily independent ports with actual physical structures. They can also be network ports integrated with signal traces and located between different modules. That is, two components or ports connected to the same network port are electrically connected. For example, the antenna ports (ANT1, ANT2) of the transmitting and receiving modules refer to the network ports used by the transmitting or receiving modules to connect to the antenna; auxiliary ports (AUX1, AUX2) and transceiver ports (TRX) refer to the network ports connected to components or modules other than the transmitting or receiving modules. For example, the antenna port ANT1 of the first receiving module is connected to the DM antenna, that is, to port 1 of the DPXT1001 connected to the antenna port ANT1 in the first receiving module, which is connected to the DM antenna through traces (or RF traces). There may not necessarily be a separately visible physical port ANT1 in the circuit.

[0228] Alternatively, the ports of the transmitting and receiving modules can also be ports with actual physical structures. When the transmitting and receiving modules are modular, the ports of the transmitting and receiving modules can be pads or pins that are set on themselves and connected to other external components.

[0229] Optionally, the various RF front-end modules provided in the embodiments of this application may further include an LB transmitting module and an LB receiving module for supporting low-frequency signal communication. The circuit structures of the LB transmitting module and the LB receiving module are similar to those of the MHB transmitting module and the MHB receiving module, except that the filtering components, PA, and LNA in the MHB transmitting module and the MHB receiving module are replaced with components adapted to the LB frequency band, and the number of components, the type of components, and the path switching method are adjusted accordingly. These details will not be elaborated here.

[0230] In receive mode, the reception path of the B40 received signal via the B40 DM antenna can be found as follows: Figure 12 As shown. The B40 received signal, after being received by the B40 DM antenna, enters switch 1013 through port 1 of switch 1013, and is output from port 3 of switch 1013 to the auxiliary port AUX1 of the first receiving module. Then, the B40 received signal enters switch 1002 through port 2 of switch 1002, and through the switching of switch 1002, is output from port 1 of switch 1002 to filter 1003 for filtering. Afterwards, the B40 received signal flows sequentially through switch 1004, LNA 1005, and MUX 1006 before entering the first RF chip. It should be noted that filter 1003 can select signals in the B40 frequency band and suppress signals in other frequency bands.

[0231] Optionally, see [link to relevant documentation] Figure 12As shown, when the DM antenna transmits and receives signals from B40 without interference, for example, when the DM antenna is not used as a Wi-Fi antenna, the received signal from B40 can be received by the DM antenna just like signals from other MHB bands. Then, the received signal from B40 enters the first receiving module through the antenna port ANT1 of the first receiving module and is input to port 1 of DPXT1001; then, through the switching of DPXT1001, it is output from port 4 of DPXT1001 to port 3 of switch 1002. Thus, the received signal from B40 can be filtered by filter 1003 from port 1 of switch 1002 through the switching of switch 1002, and then flows sequentially through switch 1004, LNA1005, and MUX1006 before entering the first RF chip. In this way, the receiving path of the received signal from B40 is compared to... Figure 9 and Figure 10 For example, reducing one filter (e.g., filter 525) can decrease the insertion loss in the receiving path.

[0232] For ease of expression, Figure 12 The second transmitting module, the second receiving module, and related components are not shown here. For their specific structure and operating principle, please refer to the description of other related embodiments.

[0233] For radio frequency (RF) signals, among frequency-adaptive components, switches are less expensive than filters in the same frequency band (compared based on the filter's passband), and their insertion loss is lower. Therefore, by introducing an additional switch (e.g., switch 1002), the B40 band can reuse the same filter (e.g., filter 1002), reducing cost, lowering insertion loss, and improving the receiver sensitivity of that band. Furthermore, the layout area of ​​a single switch is smaller than that of a single filter. Therefore, replacing the filter with an additional switch reduces the overall module layout area, facilitating module miniaturization. Here, layout area refers to the area of ​​the printed circuit board occupied by the components and related traces in the circuit.

[0234] See also Figure 12As shown: Optionally, the first transmitting module includes: DPXT1017, quadplexer 1018, duplexer 1019, filter 1020, filter 1021, filter 1022, switch 1023, switch 1024, switch 1027, switch 1028, PA1025, PA1026, LNA1029, LNA1030, and MUX1031. Optionally, the filter components and LNAs in the first transmitting module can be increased or decreased according to the number of frequency bands required by the product specifications, which will not be elaborated here. It should be noted that after the signal transmitted by each LNA is switched by the MUX, the received signal is output to the corresponding port of the first RF chip through a corresponding LNA_OUT port. When LNAs of other frequency bands are added, the MUX also adds ports of the corresponding frequency bands and connects them to the corresponding ports of the first RF chip.

[0235] exist Figure 12 In this configuration, port 1 of DPXT1017 is connected to the antenna port ANT1 of the first transmitting module, and port 2 of DPXT1017 is connected to the common port (port 1) of switch 1016. Port 3 of DPXT1017 is connected to one port of filter 1022, and port 4 of DPXT1001 is connected to one port of filter 1021. Port 5 of DPXT1017 is connected to one port of filter 1020, port 6 of DPXT1017 is connected to the common port of duplexer 1019, and port 7 of DPXT1017 is connected to the common port of quadplexer 1018. The discrete ports of quadplexer 1018 and duplexer 1019, as well as the other ports of filters 1020, 1021, and 1022, are respectively connected to the discrete terminals of switches 1023 and 1024. One or more auxiliary ports of switches 1023 and 1024 are connected one-to-one with a portion of the discrete ports of switches 1027 and 1028. The common port of switch 1027 is connected to the input port of LNA 1029, and the common port of switch 1028 is connected to the input port of switch 1030. The output ports of LNA 1029 and LNA 1030 are each connected to different ports of MUX 1031.

[0236] like Figure 12As shown, the second transmitting module includes: DPXT1034, quadplexer 1035, duplexer 1036, filter 1037, filter 1038, filter 1039, switch 1040, switch 1041, switch 1044, switch 1045, PA1042, PA1043, LNA1046, LNA1047, and MUX1048. Optionally, the filter components and LNAs in the second transmitting module can be increased or decreased according to the number of frequency bands required by the product specifications, which will not be elaborated here. It should be noted that after the signal transmitted by each LNA is switched by the MUX, the received signal is output to the corresponding port of the second RF chip through the corresponding LNA_OUT port. When LNAs of other frequency bands are added, the MUX also adds ports of the corresponding frequency bands to connect to the corresponding ports of the second RF chip.

[0237] exist Figure 12 In this configuration, port 1 of DPXT1034 is connected to the antenna port ANT1 of the second transmitting module, and port 2 of DPXT1034 is connected to the antenna port ANT2 of the second transmitting module. Port 3 of DPXT1034 is connected to one port of filter 1039, and port 4 of DPXT1034 is connected to one port of filter 1038. Port 5 of DPXT1034 is connected to one port of filter 1037, port 6 of DPXT1034 is connected to the common port of duplexer 1036, and port 7 of DPXT1034 is connected to the common port of quadplexer 1035. The discrete ports of quadplexer 1035 and duplexer 1036, as well as the other ports of filters 1037, 1038, and 1039, are respectively connected to multiple discrete ports of switch 1044 and switch 1048. One or more auxiliary ports of switches 1040 and 1041 are connected one-to-one with a portion of the discrete ports of switches 1044 and 1045. The common port of switch 1044 is connected to the input port of LNA 1046, and the common port of switch 1048 is connected to the input port of switch 1047. The output ports of LNA 1046 and LNA 1047 are each connected to different ports of MUX 1031.

[0238] See also Figure 12As shown, the second receiving module includes: SPDT1050, duplexer 1051, duplexer 1052, filter 1053, filter 1054, switch 1055, switch 1056, LNA 1057, LAN 1058, and MUX 1059. Port 1 of SPDT1050 is connected to the antenna port ANT1 of the second receiving module. Port 3 of SPDT1050 is connected to one port of filter 1054. Port 4 of SPDT1050 is connected to one port of filter 1053. Port 5 of SPDT1050 is connected to the common port of duplexer 1052, and port 6 of SPDT1050 is connected to the common port of duplexer 1051. The two discrete ports of duplexer 1051, the two discrete ports of duplexer 1052, the other port of filter 1053, and the other port of filter 1054 are respectively connected to multiple discrete ports of switch 1055 and switch 1056. The common port of switch 1055 is connected to the input port of LNA1057, and the common port of switch 1056 is connected to the input port of LNA1058. The output ports of LNA1057 and LNA1058 are each connected to different ports of MUX1059.

[0239] Optionally, the filter components and LNAs in the second receiving module can be increased or decreased depending on the number of frequency bands required by the product specifications; this will not be elaborated further here. It should be noted that after the signal transmitted by each LNA is switched by the MUX, the received signal is output to the corresponding port of the second RF chip through a corresponding LNA_OUT port. When LNAs of other frequency bands are added, the MUX also adds ports for the corresponding frequency bands and connects them to the corresponding ports of the second RF chip.

[0240] like Figure 12 In the RF front-end module shown, taking the B40 band as an example, when the first transmitter module performs SRS polling, the four transmitter paths include: transmitter path B-1 to transmitter path B-4; when the second transmitter module performs SRS polling, the transmitter paths include: transmitter path B-5 to transmitter path B-7. The specific descriptions of transmitter paths B-1 to B-7 are as follows:

[0241] Transmission path B-1 of B40: After the B40's transmission signal is output from the first RF chip, it is amplified by HB PA1026 corresponding to the HB band in the first transmission module. The amplified B40 transmission signal enters switch 1024 from the common terminal of switch 1024. After switching by switch 1024, the B40 transmission signal enters filter 1021 for filtering. The filtered B40 transmission signal enters DPXT1017 through port 4, and after switching by DPXT1017, it is transmitted from port 1 of DPXT1017 to the antenna port ANT1 of the first transmission module. Then, the B40 transmission signal enters switch 1017 through port 4 of switch 1014. After switching by switch 1017, the B40 transmission signal is transmitted from port 1 of switch 1014 to the PM antenna for transmission.

[0242] Transmission path B-2 of B40: The transmission signal of B40, after being output from the first RF chip, follows the same path as transmission path B-1 before reaching DPXT1017. The difference is that the transmission signal of B40 is switched by DPXT1017, output from port 2 of DPXT1017, output through the antenna port ANT2 of the first transmission module, and enters switch 1016. The transmission signal of B40 enters from the common terminal (port 1) of switch 1016, is output from a discrete terminal (port 2) of switch 1016 to a discrete terminal (port 2) of switch 1013, and after being switched by SPDT1013, is output from the common terminal (port 1) of switch 1013 to the B40 DM antenna for transmission.

[0243] Transmission path B-3 of B40: After the B40 transmission signal is output from the first RF chip, the path before reaching the common terminal (port 1) of switch 1016 is the same as transmission path B-2. The difference is that the B40 transmission signal is switched by switch 1016 and output from another discrete terminal (port 3) of switch 1016, and enters the SRS input port (or SRS_IN port, e.g., B40 / B41 SRS_IN port) of the second transmission module. After the B40 transmission signal is input from the SRS_IN port of the second transmission module, it enters switch 1041 through port 2 of switch 1041 of the second transmission module. After being switched by switch 1041, the B40 transmission signal is output from one discrete terminal (port 6) of switch 1041 and enters the corresponding filter 1038 for filtering. After filtering, the B40's transmit signal enters the DPXT1034 through port 4 of the second transmit module, and after being switched by the DPXT1034, it is output from port 1 of the DPXT1034 and transmitted to the PRX antenna through the antenna port ANT1 of the second transmit module for transmission.

[0244] Transmission path B-4 of B40: The transmission signal of B40, after being output from the first RF chip, follows the same path as transmission path B-3 before reaching DPXT1034. The difference is that the transmission signal of B40 is switched by DPXT1034, output from port 2 of DPXT1034, and then output to switch 1033 through the antenna port ANT2 of the second transmission module. The transmission signal of B40 enters switch 1033 from port 5, and after being switched by switch 1033, it is transmitted to the DRX antenna from port 3 of switch 1033 for transmission.

[0245] B40 Transmission Path B-5: After the B40's transmission signal is output from the second RF chip, it is amplified by inputting to HB PA1043 via the input terminal corresponding to the HB band in the second transmission module. The amplified B40 transmission signal is then switched by switch 1041 and filtered by filter 1038. After filtering, the B40 transmission signal enters DPXT1034 through port 4, is switched by DPXT1034, and is output from port 1 of the second transmission module. It is then transmitted to the PRX antenna via antenna port ANT1 of the second transmission module for transmission.

[0246] Transmit path B-6 of B40: After the B40 transmit signal is output from the second RF chip, the path before reaching port 4 of DPXT1034 is the same as transmit path B-5. The difference is that the B40 transmit signal is output from port 2 of DPXT1034 and transmitted to switch 1033 through antenna port ANT2 of the second transmit module. The B40 transmit signal is input from port 5 of switch 1033 and, through switching of switch 1033, transmitted from port 3 of switch 1033 to the DRX antenna for transmission.

[0247] Transmission path B-7 of B40: After the transmission signal of B40 is output from the second RF chip, the path before reaching port 5 of switch 1033 is the same as transmission path B-6. The difference is that the transmission signal of B40 is switched by switch 1033, output from port 1 of switch 1033, and enters switch 1014 through port 6 of switch 1014. The transmission signal of B40 is switched by switch 1014, and transmitted from port 1 of switch 1014 to the PM antenna for transmission.

[0248] In receive mode, the received signal from B40 received by the B40 DM antenna enters switch 1013 through the common terminal (port 1) of switch 1013. The received signal from B40 is then switched by switch 1013, outputting from a discrete terminal (port 3) of switch 1013, and entering the first receiving module through its auxiliary port AUX1. In the first receiving module, the received signal from B40 enters switch 1002 through a discrete terminal (port 2), and through the switching of switch 1002, is output from the common terminal (port 1) of switch 1002 to filter 1003 for filtering. Afterwards, the received signal from B40 enters switch 1004 through a discrete terminal, and through the switching of switch 1004, is output from the common terminal of switch 1004 to LNA 1005. The received signal from B40 is amplified by LNA1005 and output from LNA1005 to MUX1006. After being switched by MUX1006, it is input from the corresponding port (LNA_OUT_n) to the corresponding port of the first RF chip. When the first transmitting module is the master module, Figure 12 The thick solid line in the diagram represents a schematic of one path for transmitting and receiving signals in the B40 band.

[0249] exist Figure 12 In the RF front-end module shown, received signals from other MHB bands can be received through the DM antenna and enter the first receiving module through the antenna port ANT1 of the first receiving module. In the first receiving module, received signals from other MHB bands enter DPXT1001 from port 1 of DPXT1001, are switched by DPXT1001, and are output from one of the ports of DPXT1001 (e.g., port 5, port 6, or port 7). They are then filtered sequentially by the corresponding filters (e.g., filters 10047, 1008, or 1009) for the frequency band, and after being switched by a switch (switch 1004 or 1010), they are amplified by the corresponding LNA (LNA1005 or 1011) for low noise. Finally, after being switched by MUX1006, they are input from the corresponding port (LNA_OUT_1 or LNA_OUT_n) to the corresponding port of the first RF chip.

[0250] exist Figure 12In the example shown, when the DM antenna transmits and receives signals from B40 without interference, such as when the DM antenna is not used as a Wi-Fi antenna, the receiving path of B40 can also receive signals from the DM antenna, enter DPXT1001 through port 1, be switched by DPXT1001, be output from port 4 of DPXT1001, and transmit to the discrete terminal of switch 1004. After switching, the signals are output from the common terminal of switch 1004 to LNA1005, and from the output terminal of LNA1005 to MUX1006. After switching by MUX1006, the signals are input from the corresponding port LNA_OUT_n to the corresponding port of the first RF chip. The transmitting signal of B40 can also be transmitted through the DM antenna, for example, through transmitting paths A-2 and A-8.

[0251] It should be noted that, Figure 12 In this context, by introducing an SRS_IN port (e.g., B40 / B41 SRS_IN port) into the transmit module to implement SRS polling, it is possible to ensure that the diversity reception path of the LTE frequency band (e.g., LTE B3) is not interrupted when NSA (e.g., LTE B3+N40) networking is used.

[0252] In other words, when the first transmitting module performs SRS polling in the B40 band, the B40 transmit signal, after being output from the antenna port ANT2 of the first transmitting module, passes through the two SPDTs, switches 1013 and 1016, to reach the B40DM antenna; the B40 receive signal received by the B40 DM antenna passes through the two switches 1013 and 1002 and enters filter 1003. Therefore, compared to... Figure 9 The RF front-end module shown can reuse filters by introducing an additional switch (e.g., switch 1002) in the receiving path, reducing costs, decreasing insertion loss in the B40 receiving path, and thus improving the receiving sensitivity of the B40. Furthermore, it reduces the overall module layout area, facilitating module miniaturization and simplifying layout and wiring.

[0253] Optionally, in the RF front-end module of this application embodiment, any quadplexer can be replaced with two duplexers. Two duplexers can also be replaced with one quadplexer, as long as the frequency selection function is the same. Correspondingly, the switch connected to the common terminal of the quadplexer or duplexer can be replaced with a switch having a matching number of ports to ensure that the transmit and receive paths for each frequency band are open. Optionally, the duplexer can be applied to the FDD frequency band. The two discrete terminals of the duplexer can respectively select the transmit and receive signals of the FDD frequency band.

[0254] Optionally, Figure 12In the RF front-end module shown, the path status of DPXT1001 can be controlled by register values. Optionally, the register values ​​of DPXT1001 can be stored and controlled by at least one register (e.g., register 1). Optionally, the register values ​​in register 1 can be found in Table 1.

[0255] Table 1

[0256] Logical path The value of register 1 OFF (Off state) 00 Independent use of antenna frequency band to enable ANT1 conduction 01 Independent use of antenna frequency band to ANT2 conduction 02 Independent use of antenna frequency band to AUX1 conduction 03 ...... ......

[0257] Independent antenna band usage refers to the frequency band used by a single DM antenna as described above, such as B40. When the independent antenna band is used to ANT1, ports 1 and 4 of DPXT1001 are turned on; when the independent antenna band is used to ANT2, ports 2 and 4 of DPXT1001 are turned on; when the independent antenna band is used to AUX1, ports 1 and 2 of switch 1002 are turned on. As shown in Table 1, when the value of Register 1 is 00, DPXT1001 enters the off state, and none of the paths of DPXT1001 are turned on; when the value of Register 1 is 01, the antenna band is used independently to conduct to ANT1, that is, ports 4 and 1 of DPXT1001 are turned on; when the value of Register 1 is 02, the antenna band is used independently to conduct to ANT2, that is, ports 2 and 4 of DPXT1001 are turned on; when the value of Register 1 is 03, the antenna band is used independently to conduct to AUX1, that is, ports 1 and 2 of switch 1002 are turned on.

[0258] When an electronic device has two frequency bands that each use their own independent DM antenna, for example, the B40 band uses a single B40 DM antenna and the B41 band uses a single B41 DM antenna, the structure of the first receiving module is compared to... Figure 11 Regarding the circuit structure shown in Figure a, switch 1012 can be added. See Figure a for details. Figure 11 As shown in Figure b. Optionally, switch 1012 can be an SPDT. In, as... Figure 11 In Figure b shown, the common port (port 1) of switch 1012 is connected to filter 1009. One discrete port (port 2) of switch 1012 is connected to the auxiliary port AUX2 of the first receiving module. Another discrete port (port 3) of switch 1002 is connected to port 5 of DPXT1001 of the first receiving module.

[0259] The above Figure 11 The first receiving module shown in Figure b is used in the RF front-end module. The circuit structure can be found in [reference needed]. Figure 13 As shown. In Figure 13In this example, switch 1012 is used as an SPDT. Optionally, switch 1012 can also be an SP3T or other switches with more ports, as long as it can meet the path switching requirements. The remaining ports can be left floating or used for compatibility with switching other paths, which will not be elaborated here.

[0260] Figure 13 This is a schematic diagram of the circuit structure of an example radio frequency front-end module provided in an embodiment of this application. Figure 13 The first receiving module in the above is Figure 11 The receiving module is shown in Figure b. Optionally, the RF front-end module can be as follows: Figure 13 As shown, it includes: a first transmitting module, a first receiving module, a second transmitting module, a second receiving module, a switch 1013, a switch 1014, a switch 1015, a switch 1032, and a switch 1033.

[0261] Optionally, switch 1013 can be an SPDT, switch 1014 can be a 3P3T, switch 1015 can be an SPDT, switch 1032 can be an SP3T, and switch 1033 can be a 3P3T. Optionally, switches 1013, 1014, 1015, 1032, and 1033 can also be switches with other numbers of ports, as long as they can meet the path switching requirements.

[0262] exist Figure 13 In this configuration, the common port (port 1) of switch 1015 is connected to the B41 DM antenna; a discrete port (port 2) of switch 1015 is connected to a discrete port (port 4) of switch 1032; and another discrete port (port 3) of switch 1015 is connected to the auxiliary port AUX2 of the first receiving module. The auxiliary port AUX2 of the first receiving module is connected to a discrete port (port 2) of switch 1012 within the first receiving module. (Regarding...) Figure 13 Other modules, components, and connection methods can be found in, for example... Figure 12 The relevant descriptions will not be repeated here.

[0263] like Figure 13 In the RF front-end module shown, taking the B41 band as an example, when the first transmitter module performs SRS polling, the four transmitter paths include: transmitter path C-1 to transmitter path C-4; when the second transmitter module performs SRS polling, the transmitter paths include: transmitter path C-5 to transmitter path C-7. The specific descriptions of transmitter paths C-1 to C-7 are as follows:

[0264] Transmission path C-1 of B41: After the B41 transmission signal is output from the first RF chip, it is amplified by HB PA1026 in the HB band of the first transmission module. The amplified B41 transmission signal enters switch 1024 through the common port of switch 1024. After switching by switch 1024, the B41 transmission signal enters filter 1022 for filtering. The filtered B41 transmission signal enters DPXT1017 through port 3, and after switching by switch 1017, it is transmitted from port 1 of DPXT1017 to the antenna port ANT1 of the first transmission module. Then, the B41 transmission signal enters switch 1014 through port 4. After switching by switch 1014, the B41 transmission signal is transmitted from port 1 of switch 1014 to the PM antenna for transmission.

[0265] Transmission path C-2 of B41: The transmission signal of B41, after being output from the first RF chip, follows the same path as transmission path C-1 before reaching DPXT1017. The difference is that the transmission signal of B41 is switched by DPXT1017, output from port 2 of DPXT1017, and transmitted to the common terminal (port 1) of switch 1032 through the antenna port ANT2 of the first transmission module. After switching by switch 1032, the transmission signal of B41 is output from a discrete port (port 4) of switch 1032 to switch 1015. The transmission signal of B41 enters switch 1015 from a discrete port (port 2) of switch 1015, and after switching by switch 1015, is output from the common port (port 1) of switch 1015 to the B41 DM antenna for transmission.

[0266] Transmission path C-3 of B41: After the B41 transmission signal is output from the first RF chip, the path before reaching the common terminal (port 1) of switch 1032 is the same as transmission path C-2. The difference is that the B41 transmission signal, after being switched by switch 1032, is output from another discrete port (port 3) of switch 1032 and enters the SRS input port (or SRS_IN port, e.g., B41 / B41SRS_IN port) of the second transmission module. After the B41 transmission signal is input from the SRS_IN port of the second transmission module, it enters switch 1041 through the auxiliary port (port 2) of switch 1041 of the second transmission module. After being switched by switch 1041, the B41 transmission signal is output from a discrete port (port 5) of switch 1041 and enters the corresponding filter 1039 for filtering. After filtering, the B41's transmit signal enters the DPXT1034 through port 3 of the second transmit module, and after switching by the DPXT1034, it is output from port 1 of the DPXT1034. Then, the B41's transmit signal is transmitted to the PRX antenna through the antenna port ANT1 of the second transmit module for transmission.

[0267] Transmission path C-4 of B41: The transmission signal of B41, after being output from the first RF chip, follows the same path as transmission path C-3 before reaching DPXT1034. The difference is that the transmission signal of B41 is switched by DPXT1034, output from port 2 of DPXT1034, and then output to switch 1033 through the antenna port ANT2 of the second transmission module. The transmission signal of B41 enters switch 1033 from port 5, and after being switched by switch 1033, it is transmitted to the DRX antenna from port 3 of switch 1033 for transmission.

[0268] B41 Transmission Path C-5: After the B41 transmission signal is output from the second RF chip, it is amplified by inputting to HB PA1043 via the input port corresponding to the HB band in the second transmission module. The amplified B41 transmission signal is then switched by switch 1041 and filtered by filter 1039. After filtering, the B41 transmission signal enters DPXT1034 through port 3, and after switching by DPXT1034, it is output from port 1 of the second transmission module. Finally, the B41 transmission signal is transmitted to the PRX antenna via antenna port ANT1 of the second transmission module for transmission.

[0269] Transmit path C-6 of B41: After the B41 transmit signal is output from the second RF chip, the path before reaching port 3 of DPXT1034 is the same as transmit path C-5. The difference is that the B41 transmit signal is output from port 2 of DPXT1034 and transmitted to switch 1033 through antenna port ANT2 of the second transmit module. The B41 transmit signal is input from port 5 of switch 1033 and, through switching of switch 1033, is transmitted from port 3 of switch 1033 to the DRX antenna for transmission.

[0270] Transmission path C-7 of B41: After the transmission signal of B41 is output from the second RF chip, the path before reaching port 5 of switch 1033 is the same as transmission path B-6. The difference is that the transmission signal of B41 is switched by switch 1033, output from port 1 of switch 1033, and enters switch 1014 through port 6 of switch 1014. The transmission signal of B41 is switched by switch 1014, and transmitted from port 1 of switch 1014 to the PM antenna for transmission.

[0271] In receive mode, the received signal from B41 received by the B41 DM antenna enters switch 1015 through the common terminal (port 1) of switch 1015. The received signal from B41 is then switched by switch 1015, outputting from a discrete terminal (port 3) of switch 1015, and entering the first receiving module through the auxiliary port AUX2 of the first receiving module. In the first receiving module, the received signal from B41 enters switch 1012 through a discrete terminal (port 2), and through the switching of switch 1012, is output from the common terminal (port 1) of switch 1012 to filter 1009 for filtering. Afterwards, the received signal from B41 enters switch 1004 through a discrete terminal of switch 1004, and through the switching of switch 1004, is output from the common terminal of switch 1004 to LNA 1005. The received signal from B41 is amplified by LNA1005 and output from LNA1005 to MUX1006. After being switched by MUX1006, it is input from the corresponding port (LNA_OUT_n) to the corresponding port of the first RF chip. When the first transmitting module is the master module, Figure 13 The thick solid line in the diagram represents a schematic of one path for the transmitted and received signals in the B41 band.

[0272] exist Figure 13In the RF front-end module shown, received signals from MHB bands other than B40 and B41 (e.g., B7) can be received via the DM antenna and enter the first receiving module through antenna port ANT1. In the first receiving module, received signals from other MHB bands enter DPXT1001 from port 1, are switched by DPXT1001, and are output from port 6 or 7 of DPXT1001, then transmitted to a discrete port of the switch (switch 1004 or switch 1010). After switching, received signals from other MHB bands are output from the common port of the switch (switch 1004 or switch 1010) to the LNA (LNA1011 or LNA1005). The received signals from the MHB bands other than B40 and B41 are amplified by the low noise of the LNA (LNA1011 or LNA1005), output from the output port of the LNA (LNA1011 or LNA1005) to the MUX1006, and then switched by the MUX1006 to be input from the corresponding port (LNA_OUT_1 or LNA_OUT_n) to the corresponding port of the first RF chip.

[0273] exist Figure 13 In the example shown, when the DM antenna transmits and receives signals from B40 without interference, for example, when the DM antenna is not used as a Wi-Fi antenna, the received signal from B40 can also be received from the DM antenna and enter DPXT1001 through port 1. After switching by DPXT1001, it is output from port 4 of DPXT1001 and enters switch 1002 through port 3. After switching by switch S1002, the received signal from B40 is input to filter 1003 from the common port (port 1) of switch 1002 for filtering. After filtering, the received signal from B40 enters switch 1004 through a discrete port of switch 1004. After switching by switch 1004, the received signal from B40 is output from the common port of switch 1004 to LNA1005, and then output from the output port of LNA1005 to MUX1006. After switching by MUX1006, it is input from the corresponding port (LNA_OUT_n) to the corresponding port of the first RF chip.

[0274] exist Figure 12In the example shown, when the DM antenna transmits and receives signals from B40 without interference, such as when the DM antenna is not used as a Wi-Fi antenna, the receiving path of B40 can also receive signals from the DM antenna, enter DPXT1001 through port 1, be switched by DPXT1001, be output from port 4 of DPXT1001, and transmit to the discrete terminal of switch 1004. After switching, the signals are output from the common terminal of switch 1004 to LNA1005, and from the output terminal of LNA1005 to MUX1006. After switching by MUX1006, the signals are input from the corresponding port LNA_OUT_n to the corresponding port of the first RF chip. The transmitting signal of B40 can also be transmitted through the DM antenna, for example, through transmitting paths A-2 and A-8.

[0275] Optionally, in Figure 13 In the example shown, when the DM antenna transmits and receives signals from B41 without interference—for example, when the DM antenna is not used as a common interference band for B41—the received signal from B41 can also be received from the DM antenna and enter DPXT1001 through port 1. After switching by DPXT1001, the received signal from B41 is output from port 5 of DPXT1001 and enters switch 1012 through port 3. After switching by switch S1012, it is input to filter 1009 through the common port (port 1) of switch 1012 for filtering. After filtering, the received signal from B41 enters through a discrete port of switch 1004, and after switching by switch 1004, it is output from the common terminal of switch 1004 to LNA1005. The received signal from B41 is output from the output port of LNA1005 to MUX1006. After switching by MUX1006, it is input from the corresponding port (LNA_OUT_n) to the corresponding port of the first RF chip.

[0276] In such Figure 13 In the RF front-end module shown, for the case of two DM antennas using their respective frequency bands, a switch can be introduced in the receiving path of each frequency band to save a filter, thereby reducing costs. It also reduces insertion loss in the corresponding frequency band's receiving path, thus improving receiving sensitivity. Furthermore, it saves layout area, for example, allowing for module miniaturization.

[0277] Alternatively, switches 1002 and 1012 described above can also be replaced by a DP4T. See details in [link to documentation]. Figure 14 As shown, Figure 14 Switch 1061 is used instead of switches 1002 and 1012. Figure 14In this configuration, port 1 of switch 1061 is connected to one end of filter 1003, and port 2 of switch 1061 is connected to the auxiliary port AUX1 of the first receiving module. Port 3 of switch 1061 is connected to port 4 of DPXT1001, and port 4 of switch 1061 is connected to the auxiliary port AUX2 of the first receiving module. Port 5 of switch 1061 is connected to port 5 of DPXT1001, and port 6 of switch 1061 is connected to one end of filter 1009. For example, the two receiving paths of the signals received by the B40 DM antenna and the B41 DM antenna can be seen in [reference needed]. Figure 14 The thick solid line in the diagram shows the transmission paths for B40 and B41. (See also: [link to diagram]). Figure 12 and Figure 13 The relevant descriptions will not be repeated here.

[0278] In such Figure 14 In the RF front-end module shown, for the case of two DM antennas using their respective frequency bands, introducing a switch (DP4T) saves two filters, reducing costs, improving receiver sensitivity, and saving layout area. Compared to Figure 13 The radio frequency front-end module shown is Figure 14 In the RF front-end module shown, a multi-port switch is introduced to replace two independent switches, further saving layout area. Figure 14 The second transmitting module, the second receiving module, and the switch 1033 are not shown in the text. For specific connection methods and working principles, please refer to the relevant descriptions in the text, which will not be repeated here.

[0279] Alternatively, switches 1013 and 1015 can be replaced by a single DP4T. The connection method, working principle, and technical effects can be found in the description of switch 1016, and will not be repeated here.

[0280] The above Figure 13 and Figure 14 In the RF front-end module shown, the frequency bands of the two DM antennas using their respective frequency bands are illustrated using B40 and B41 as examples. The frequency bands using the DM antennas individually can also be other frequency bands. Optionally, the number of frequency bands using the DM antennas individually can also be three, four, or more. In the embodiments of this application, each frequency band using the DM antenna individually can be configured as follows... Figure 12 and Figure 13 The method shown involves introducing an additional switch to avoid the need for a filter, thereby saving costs, reducing path insertion loss, and facilitating layout. Alternatively, switches with more ports, such as 3P6T or 4P8T switches, can be used to replace multiple individual SPDTs, further saving layout area. Correspondingly, switch 1016 or switch 1032 needs to be replaced with switches with more ports to accommodate more path switching requirements.

[0281] In some scenarios, such as dual SIM dual standby, the first transmission module can operate in the B40 band, for example, capable of transmitting signals in the B40 band, while the second transmission module can operate in the B41 band, for example, capable of transmitting signals in the B41 band. These two bands can operate simultaneously without interfering with each other.

[0282] This application embodiment also provides a receiving module, the circuit structure of which can be as follows: Figure 15 As shown. When a frequency band uses its own DM antenna alone, the DPXT1001 in the first receiving module may include an auxiliary port (also known as AUX), as detailed in the example below. Figure 15 As shown in Figure a. Figure 15 In Figure a, ports 3 and 8 of the DPXT1001 are auxiliary ports, denoted as AUX2 and AUX1 respectively. Port 8 of the DPXT1001 is connected to the transceiver port TRX1 of the first receiving module. Port 3 of the DPXT1001 is connected to the transceiver port TRX2 of the first receiving module. For details on the connection methods of the first receiving module's TRX1 with other modules, please refer to the relevant descriptions of the first receiving module's AUX1 in other embodiments of the document; these will not be repeated here. It should be noted that the auxiliary ports in the switch can be connected to other discrete ports in the switch under the instruction of a control signal. Optionally, port 8 of DPXT1001 can communicate with ports 1 and 2; alternatively, port 8 of DPXT1001 can also communicate with ports 3, 4, 5, 6, and 7. Alternatively, port 3 of DPXT1001 can communicate with ports 1 and 2; alternatively, port 3 of DPXT1001 can also communicate with ports 4, 5, 6, 7, and 8.

[0283] Optionally, in such Figure 15 In Figure a, port 8 of the DPXT1001 can be connected to ports 3 and 4. This first receiving module is compared to... Figure 9 The circuit structure reduces the number of switches (523 and 524) and the number of filters (525). This first receiving module eliminates the need for additional switches, filters, and other components, enabling path switching in the frequency band when using only a DM antenna, further reducing cost and insertion loss. Furthermore, the reduced component count decreases the layout area, facilitating layout and wiring, and further miniaturizing the module.

[0284] When two frequency bands each use the same independent DM antenna, the first receiving module can also be as follows: Figure 15As shown in Figure b, port 8 of the DPXT1001 can communicate with ports 3, 4, and 5. This first receiving module is compared to... Figure 10 The circuit structure reduces the number of switches (523, 526, and 528) and filters (525 and 527). This first receiving module eliminates the need for additional switches, filters, and other components, enabling path switching in the presence of two separate DM antennas, further reducing cost and insertion loss. Furthermore, the reduced component count decreases the layout area, facilitating layout and wiring, and further miniaturizing the module.

[0285] When two frequency bands each use their own independent DM antennas, the first receiving module can also refer to, for example... Figure 15 As shown in Figure c. In Figure 15 Based on diagram a in the text, such as Figure 15 As shown in Figure c, the DPXT1001 in the first receiving module also includes another auxiliary port (port 9, also known as AUX3). Port 9 of the DPXT1001 is connected to the transceiver port TRX3 of the first receiving module. Port 8 of the DPXT1001 can be connected to ports 3 and 4 of the DPXT1001, and port 9 of the DPXT1001 can be connected to ports 3 and 5 of the DPXT1001. This first receiving module can meet the path switching requirements in the presence of two frequency bands using separate DM antennas without introducing more switches, filters, or other components, further reducing costs, reducing insertion loss, and improving receiving sensitivity. Furthermore, the reduced number of components also reduces the layout area, making layout and wiring easier and further realizing module miniaturization.

[0286] Figure 16 Figures a, b, and c in the diagram correspond to the following: Figure 15 The diagrams in Figures a, b, and c illustrate the conduction state of DPXT1001.

[0287] exist Figure 16 In Figure a, port 4 is the port corresponding to a frequency band using a DM antenna independently; port 3 is auxiliary port AUX2; and port 8 is auxiliary port AUX1. Port 8 can communicate with ports 3 and 4.

[0288] exist Figure 16 In diagram b, port 4 corresponds to one frequency band when using the DM antenna independently, and port 5 corresponds to another frequency band when using the DM antenna independently; port 3 is auxiliary port AUX2; port 8 is auxiliary port AUX1. Port 8 can communicate with ports 3, 4, and 5.

[0289] exist Figure 16 In diagram c, port 4 corresponds to one frequency band where the DM antenna is used independently; port 5 corresponds to another frequency band where the DM antenna is used independently; port 3 is auxiliary port AUX2; port 8 is auxiliary port AUX1; and port 9 is auxiliary port AUX3. Port 8 can communicate with ports 3 and 4, and port 9 can communicate with ports 3 and 5.

[0290] Optionally, in the DPXT1001 described above, ports 8 and 9 can be interchanged, and the corresponding paths for the respective frequency bands can be adjusted accordingly. For example, port 8 of the DPXT1001 can be connected to ports 3 and 5, and port 9 can be connected to ports 3 and 4. Furthermore, port 5 of the DPXT1001 can be replaced with filter 1003 connected to B40, and port 4 can be replaced with filter 1009 connected to B41. Further details are omitted here.

[0291] Next, based on the overall structure and operating status of the RF front-end module, we will... Figures 17 to 19 The working status of each receiving module is explained in detail.

[0292] Figure 17 This is a schematic diagram of the circuit structure of an example radio frequency front-end module provided in an embodiment of this application. Figure 17 The radio frequency front-end module shown includes the above-mentioned Figure 15 The first receiving module is shown in Figure a. Specifically, the radio frequency front-end module includes: a first transmitting module, a first receiving module, a second transmitting module, a second receiving module, switch 1014, and switch 1033.

[0293] Optionally, the first transmitting module can serve as the main transmitting module for NR, and the first transmitting module, the first receiving module, and the first radio frequency chip are connected; the second transmitting module can serve as the main transmitting module for LTE, and the second transmitting module, the second receiving module, and the second radio frequency chip are connected, as detailed in the example below. Figure 6 As shown, it will not be elaborated further here. Figure 17 The structures of the first transmitting module, the second transmitting module, and the second receiving module can be referenced. Figure 12 The structural examples and related descriptions of the corresponding modules are not repeated here.

[0294] like Figure 17As shown, port 1 of switch 1014 is connected to the PM antenna, and port 2 of switch 1014 is connected to the transceiver port TRX2 of the first receiving module (i.e., port 3 of DPXT1001). Port 3 of switch 1014 is connected to port 4 of switch 1033, and port 4 of switch 1014 is connected to the antenna port ANT1 of the first transmitting module. Port 5 of switch 1014 is connected to the antenna port ANT2 of the first receiving module, and port 6 of switch 1014 is connected to port 1 of switch 1033. Optionally, port 2 of switch 1033 is connected to the transceiver port TRX of the second transmitting module. Port 3 of switch 1033 is connected to the DRX antenna. Port 5 of switch 1033 is connected to the transceiver port ANT2 of the second transmitting module, and port 6 of switch 1033 is connected to the transceiver port ANT1 of the second receiving module. The transceiver port TRX1 of the first receiving module (i.e., port 8 of DPXT1001) is connected to the B40 DM antenna.

[0295] Taking the B40 using a single B40 DM antenna as an example, in such cases... Figure 17 In the RF front-end modules shown, when the first transmitter module performs SRS polling, the four transmitter paths include: transmitter paths D-1 to D-4; when the second transmitter module performs SRS polling, the four transmitter paths include: transmitter paths D-5 to D-8. The specific descriptions of transmitter paths D-1 to D-8 are as follows:

[0296] B40 Transmission Path D-1: After the B40 transmission signal is output from the first RF chip, it is amplified by HB PA1026 in the first transmission module corresponding to the HB band. The amplified B40 transmission signal enters switch 1024 through the common terminal (port 1) of switch 1024. After switching by switch 1024, the B40 transmission signal enters filter 1021 through the discrete port (port 6) of switch 1024 for filtering. The filtered B40 transmission signal enters DPXT1017 through port 4, and after switching by DPXT1017, it is transmitted from port 1 of DPXT1017 to the antenna port ANT1 of the first transmission module. Then, the B40 transmission signal is input to switch 1014 through port 4, and after switching by switch 1014, it is transmitted from port 1 of switch 1014 to the PM antenna for transmission.

[0297] Transmit path D-2 of B40: The path from the output of the first RF chip to the switch 1014 after the B40's transmit signal is the same as transmit path D-1. The difference is that the B40's transmit signal is switched by switch 1014, output from port 2 of switch 1014, and enters the first receiving module through the transceiver port TRX2 of the first receiving module. The B40's transmit signal is transmitted from the transceiver port TRX2 of the first receiving module to port 3 of the DPXT1001 of the first receiving module. Through the switching of DPXT1001, the B40's transmit signal is output from port 8 of DPXT1001 and transmitted to the transceiver port TRX1 of the first receiving module, and then transmitted to the B40 DM antenna for transmission. The path shown between port 8 of DPXT1001 and the B40 DM antenna (the dotted-line path) is the common transmit and receive path of B40, that is, both the B40's transmit and receive signals can pass through this path.

[0298] Transmission path D-3 of B40: After the B40's transmission signal is output from the first RF chip, the path before reaching port 4 of DPXT1017 is the same as transmission path D-1. The difference is that the B40's transmission signal is switched by DPXT1017 and output from port 2 of DPXT1017 to the antenna port ANT2 of the first transmission module. After the B40's transmission signal is output through the antenna port ANT2 of the first transmission module, it enters the second transmission module through the SRS input port (or SRS_IN port, such as the B40 / B41 SRS_IN port). After the B40's transmission signal is input from the SRS_IN port of the second transmission module, it enters switch 1041 through port 2 of the switch 1041 of the second transmission module. After being switched by switch 1041, the B40's transmission signal is output from a discrete port (port 6) of switch 1041 and enters the corresponding filter 1038 for filtering. After filtering, the B40's transmit signal enters the DPXT1034 through port 4 of the second transmit module, and after switching by the DPXT1034, it is output from port 1 of the DPXT1034. Then, the B40's transmit signal is transmitted to the PRX antenna through the antenna port ANT1 of the second transmit module for transmission.

[0299] Transmit path D-4 of B40: The path of the B40's transmit signal from the first RF chip to DPXT1034 is the same as transmit path D-3. The difference is that the B40's transmit signal is switched by DPXT1034, output from port 2 of DPXT1034, and then output to switch 1033 through the antenna port ANT2 of the second transmit module. The B40's transmit signal enters switch 1033 from port 5, and after being switched by switch 1033, it is transmitted to the DRX antenna from port 3 of switch 1033 for transmission.

[0300] B40 Transmission Path D-5: After the B40's transmission signal is output from the second RF chip, it is amplified by inputting to HB PA1043 via the input terminal corresponding to the HB band in the second transmission module. The amplified B40 transmission signal enters switch 1041 through its common port (port 1), and after switching by switch 1041, it is output from a discrete port (port 6) of switch 1041, entering filter 1038 for filtering. After filtering, the B40 transmission signal enters DPXT1034 through port 4, and after switching by DPXT1034, it is output from port 1 of DPXT1034. Then, it is transmitted to the PRX antenna for transmission through the antenna port ANT1 of the second transmission module.

[0301] Transmit path D-6 of B40: After the B40 transmit signal is output from the second RF chip, the path before reaching port 4 of DPXT1034 is the same as transmit path D-5. The difference is that the B40 transmit signal is output from port 2 of DPXT1034 and transmitted to switch 1033 through antenna port ANT2 of the second transmit module. The B40 transmit signal is input from port 5 of switch 1033 and, through switching of switch 1033, transmitted from port 3 of switch 1033 to the DRX antenna for transmission.

[0302] Transmission path D-7 of B40: After the B40's transmission signal is output from the second RF chip, the path before reaching port 5 of switch 1033 is the same as transmission path D-6. The difference is that the B40's transmission signal is switched by switch 1033, output from port 1 of switch 1033, and enters switch 1014 through port 6 of switch 1014. The B40's transmission signal is then switched by switch 1014, and transmitted from port 1 of switch 1014 to the PM antenna for transmission.

[0303] Transmit path D-8 of B40: After the B40 transmit signal is output from the second RF chip, the path before reaching switch 1014 is the same as transmit path D-7. The difference is that after being switched by switch 1014, the B40 transmit signal is output from port 2 of switch 1014 and then enters the transceiver port TRX2 of the first receiving module. The B40 transmit signal is transmitted from the transceiver port TRX2 of the first receiving module to port 3 of DPXT1001. The B40 transmit signal is then switched by DPXT1001 and transmitted from port 8 of DPXT1001 to the transceiver port TRX1 of the first receiving module. Afterwards, the B40 transmit signal is transmitted from the transceiver port TRX1 of the first receiving module to the B40 DM antenna for transmission.

[0304] In such Figure 17 In the RF front-end module shown, whether the first transmit module or the second transmit module performs SRS polling, it can poll all four antennas, thus expanding the application scenarios.

[0305] In receive mode, the B40 received signal received by the B40 DM antenna enters the first receiving module through the TRX1 port, and then enters DPXT1001 through port 8. After switching by DPXT1001, the B40 received signal is output from port 4 of DPXT1001 to filter 1003 for filtering. After filtering, the B40 received signal enters switch 1004 through a discrete port, and after switching by switch 1004, it is output from the common port of switch 1004 to LNA1005. The B40 received signal is amplified by LNA1005 and output from the output port of LNA1005 to MUX1006. After switching by MUX1006, it is input from the corresponding port (LNA_OUT_n) to the corresponding port of the first RF chip.

[0306] exist Figure 17In the RF front-end module shown, received signals from other MHB bands can be received through the DM antenna and enter the first receiving module through the antenna port ANT1. In the first receiving module, the path of received signals from other MHB bands is shown by the thick dashed line: entering DPXT1001 from port 1, being switched by DPXT1001, and outputting from port 6 or port 7 of DPXT1001, then transmitted to the filter (filter 1007 or filter 1008) for filtering. Afterwards, received signals from other MHB bands enter the switch (switch 1004 or switch 1010) through a discrete terminal, and after being switched by the switch (switch 1004 or switch 1010), are output from the common port of the switch (switch 1004 or switch 1010) to the LNA (LNA1005 or LNA1011). The received signals from other MHB bands are amplified by the low-noise amplifier (LNA1005 or LNA1011) and output from the output port of the LNA (LNA1005 or LNA1011) to the MUX1006. After being switched by the MUX1006, they are input from the corresponding port (LNA_OUT_n) to the corresponding port of the first RF chip.

[0307] exist Figure 17 In the example shown, when the DM antenna transmits and receives signals from B40 without interference, for example, when the DM antenna is not used as a Wi-Fi antenna, the received signal from B40 can also be received from the DM antenna and enter DPXT1001 from port 1. After switching by DPXT1001, the received signal from B40 is output from a discrete port (port 4) of DPXT1001 and transmitted to filter 1003 for filtering. Then, the received signal from B40 enters switch 1004 through a discrete port. After switching by switch 1004, the received signal from B40 is output from the common port of switch 1004 to LNA1005, and from the output port of LNA1005 to MUX1006. After switching by MUX1006, the received signal from B40 is input from the corresponding port (LNA_OUT_n) to the corresponding port of the first RF chip.

[0308] When the first transmit module polls, the transmit signals from other MHB bands poll one of the transmit paths of the DM antenna, which can be seen in part of transmit path D-2: Specifically, the transmit signals from other MHB bands, after being output from the first RF chip, follow the same path as transmit path D-2 before reaching DPXT1001. The difference is that the transmit signals from other MHB bands are switched by DPXT1001, output from port 1 of DPXT1001, and transmitted to the DM antenna for transmission through the antenna port ANT1 of the first transmit module.

[0309] When the second transmitting module polls, the transmission paths of other MHB band transmission signals polling the DM antenna can be seen in part of transmission path D-8: Specifically, the path of other MHB band transmission signals after being output from the second RF chip and before reaching port 2 of switch 1014 is the same as transmission path D-8. The difference is that after being output from port 2 of switch 1014, the other MHB band transmission signals enter the transceiver port TRX2 of the first receiving module. The other MHB band transmission signals are transmitted from the transceiver port TRX2 of the first receiving module to port 3 of DPXT1001, and through the switching of DPXT1001, are transmitted from port 1 of DPXT1001 to ANT1 of the first receiving module, and then transmitted to the DM antenna for transmission.

[0310] The frequency bands mentioned above that require the independent use of a separate antenna can be B40, B41, or other frequency bands, and can be referred to as independent antenna usage frequency bands. Figure 17 In this context, each antenna band can be used independently, such as B40, B41, N40, N41, etc. The values ​​of the registers corresponding to the logic paths of the DPXT1001 are shown in Table 2. Table 2 illustrates an example where the register values ​​are stored in register 1:

[0311] Table 2

[0312] Logical path The value of register 1 OFF (Off state) 00 Independent use of antenna bands to ANT1 01 Independent use of antenna bands to ANT2 02 Independent use of antenna bands to TRX1 03 TRX1 to TRX2 04 ...... ......

[0313] Optionally, the values ​​of the DPXT1001 registers can also be stored in two separate registers, such as register 1 and register 2. The register value corresponding to the auxiliary port being turned on can be stored separately in register 2, as shown in Table 3.

[0314] Table 3

[0315]

[0316]

[0317] In Tables 2 and 3, OFF indicates the off state, meaning all paths of the DPXT1001 are not active; using the antenna band independently to ANT1 indicates that ports 4 and 1 of the DPXT1001 are active; using the antenna band independently to ANT2 indicates that ports 4 and 2 of the DPXT1001 are active; using the antenna band independently to TRX1 indicates that ports 4 and 8 of the DPXT1001 are active; and using TRX1 to TRX2 indicates that ports 8 and 3 of the DPXT1001 are active. In Table 3, X indicates that there is no valid register value for the corresponding logical path in the register, and is either empty or ineffective.

[0318] Figure 18 An example provided for an embodiment of this application includes the above. Figure 15 The first receiving module's RF front-end module is shown in Figure b. Optionally, the first transmitting module, second transmitting module, second receiving module, switch 1014, and switch 1033 in the RF front-end module, and their connection relationships, can be found in [reference needed]. Figure 17 Related descriptions.

[0319] exist Figure 18 In the applied electronic equipment, B40 and B41 share the same DM antenna, denoted as the B40 / B41 DM antenna. Figure 18 In the RF front-end module shown, the transmission path of B40 during SRS polling through the first and second transmission modules can be seen as follows: Figure 17 The relevant descriptions are as follows. The transmit path of B41 during SRS polling can reuse the transmit path of B40, which will not be elaborated here. The receive path of the B40 received signal received through the B40 / B41 DM antenna can also be found in [reference missing]. Figure 17 The reception path for receiving the B40 signal via the B40 DM antenna, as shown, will not be described again here. The difference lies in the reception path when the B40 / B41 DM antenna receives the B41 signal; this can be found in the following diagram. Figure 18 The thick solid and thick dashed lines in the diagram illustrate this. The received signal from B41 enters the first receiving module through TRX1, and then enters DPXT1001 through port 8. After switching by DPXT1001, the received signal from B41 is transmitted from port 5 of DPXT1001 to filter 1009 for filtering. After filtering, the received signal from B41 enters switch 1004 through a discrete port of switch 1004. After switching by switch 1004, it is output from the common port of switch 1004 to LNA1005. The received signal from B41 is amplified by LNA1005 and output from the output terminal of LNA1005 to MUX1006. After switching by MUX1006, it is input from the corresponding port (LNA_OUT_n) to the corresponding port of the first RF chip.

[0320] Figure 19 An example provided for an embodiment of this application includes the above. Figure 15 The first receiving module's RF front-end module is shown in Figure c. Optionally, the first transmitting module, second transmitting module, second receiving module, switch 1014, and switch 1033 in the RF front-end module, and their connection relationships, can be found in [reference needed]. Figure 15 The relevant description of diagram c in the diagram.

[0321] like Figure 19As shown, the connection relationship of switch 1014 and switch 1033, as well as the relevant path of B40, can be found in [reference needed]. Figure 17 Related descriptions of the embodiments. Figure 19 In the first receiving module, TRX1 is connected to the B40 DM antenna, and TRX3 is connected to the B41 DM antenna.

[0322] In such Figure 19 In the RF front-end modules shown, taking B41 as an example, when the first transmitter module performs SRS polling, the four transmitter paths include: transmitter paths E-1 to E-4; when the second transmitter module performs SRS polling, the four transmitter paths include: transmitter paths E-5 to E-8. The specific descriptions of transmitter paths E-1 to E-8 are as follows:

[0323] Transmission path E-1 of B41: After the B41 transmission signal is output from the first RF chip, it is amplified by HB PA1026 in the HB band of the first transmission module. The amplified B41 transmission signal enters switch 1024 through the common port of switch 1024. After switching by switch 1024, the B41 transmission signal enters filter 1022 for filtering. The filtered B41 transmission signal enters DPXT1017 through port 3, and after switching by DPXT1017, it is transmitted from port 1 of DPXT1017 to the antenna port ANT1 of the first transmission module, and then input to switch 1014 through port 4. After switching by switch 1014, the B41 transmission signal is transmitted from port 1 of switch 1014 to the PM antenna for transmission.

[0324] Transmit path E-2 of B41: After the B41 transmit signal is output from the first RF chip, the path before reaching switch 1014 is the same as transmit path E-1. The difference is that the B41 transmit signal is switched by switch 1014, output from port 2 of switch 1014, and enters the first receiving module through the transceiver port TRX2 of the first receiving module. The B41 transmit signal is transmitted from the transceiver port TRX2 of the first receiving module to port 3 of DPXT1001. Through the switching of DPXT1001, the B41 transmit signal is output from port 9 of DPXT1001 and transmitted to the transceiver port TRX3 of the first receiving module, and then transmitted to the B41 DM antenna for transmission.

[0325] Transmit path E-3 of B41: After the B41 transmit signal is output from the first RF chip, the path before reaching port 3 of DPXT1017 is the same as transmit path E-1. The difference is that the B41 transmit signal is switched by switch 1017 and output from port 2 of DPXT1017 to the antenna port ANT2 of the first transmit module. After the B41 transmit signal is output from the antenna port ANT2 of the first transmit module, it enters the SRS input port (or SRS_IN port, e.g., B41 / B41SRS_IN port) of the second transmit module. After the B41 transmit signal is input from the SRS_IN port of the second transmit module, it enters switch 1041 through the auxiliary port (port 2) of switch 1041 of the second transmit module. After being switched by switch 1041, the B41 transmit signal is output from a discrete port (port 5) of switch 1041 and enters the corresponding filter 1039 for filtering. After filtering, the B41's transmit signal enters the DPXT1034 through port 3 of the second transmit module, and after switching by the DPXT1034, it is output from port 1 of the DPXT1034 to the antenna port ANT1 of the second transmit module. Then, the B41's transmit signal is transmitted to the PRX antenna through the antenna port ANT1 of the second transmit module for transmission.

[0326] Transmit path E-4 of B41: The path of the B41 transmit signal from the first RF chip to DPXT1034 is the same as transmit path E-3. The difference is that the B41 transmit signal is switched by DPXT1034, output from port 2 of DPXT1034, and then output to switch 1033 through the antenna port ANT2 of the second transmit module. The B41 transmit signal enters switch 1033 from port 5, and after being switched by switch 1033, it is transmitted to the DRX antenna from port 3 of switch 1033 for transmission.

[0327] B41 Transmission Path E-5: After the B41 transmission signal is output from the second RF chip, it is amplified by inputting to HB PA1043 through the input port corresponding to the HB band in the second transmission module. The amplified B41 transmission signal enters switch 1041 from its common port (port 1), and after being switched by switch 1041, it is output from a discrete port (port 5) of switch 1041 and enters filter 1039 for filtering. After filtering, the B41 transmission signal enters DPXT1034 through port 3, and after being switched by DPXT1034, it is output from port 1 of DPXT1034 and transmitted to the PRX antenna through the antenna port ANT1 of the second transmission module for transmission.

[0328] Transmit path E-6 of B41: After the B41 transmit signal is output from the second RF chip, the path before reaching port 3 of DPXT1034 is the same as transmit path E-5. The difference is that the B41 transmit signal is output from port 2 of DPXT1034 and transmitted to switch 1033 through antenna port ANT2 of the second transmit module. The B41 transmit signal is input from port 5 of switch 1033 and, through switching of switch 1033, is transmitted from port 3 of switch 1033 to the DRX antenna for transmission.

[0329] Transmission path E-7 of B41: After the B41 transmission signal is output from the second RF chip, the path before reaching port 5 of switch 1033 is the same as transmission path E-6. The difference is that the B41 transmission signal is switched by switch 1033, output from port 1 of switch 1033, and enters switch 1014 through port 6 of switch 1014. The B41 transmission signal is then switched by switch 1014, and transmitted from port 1 of switch 1014 to the PM antenna for transmission.

[0330] Transmit path E-8 of B41: After the B41 transmit signal is output from the second RF chip, the path before reaching switch 1014 is the same as transmit path E-7. The difference is that after being switched by switch 1014, the B41 transmit signal is output from port 2 of switch 1014 and then enters the transceiver port TRX2 of the first receiving module. The B41 transmit signal is transmitted from the transceiver port TRX2 of the first receiving module to port 3 of DPXT1001, and after being switched by DPXT1001, it is transmitted from port 9 of DPXT1001 to the transceiver port TRX3 of the first receiving module. After that, the B41 transmit signal is transmitted from the transceiver port TRX3 of the first receiving module to the B41 DM antenna for transmission.

[0331] In receive mode, the received signal from B41 received by the B41 DM antenna enters the first receiving module through the TRX3 port of the first receiving module, and then enters DPXT1001 through port 9. After switching by DPXT1001, the received signal from B41 is output from port 5 of DPXT1001 to filter 1009. After filtering, the received signal from B41 enters switch 1004 through a discrete terminal of switch 1004, and after switching by switch 1004, it is output from the common terminal of switch 1004 to LNA1005. The received signal from B41 is amplified by LNA1005, output from the output terminal of LNA1005 to MUX1006, and after switching by MUX1006, it is input from the corresponding port (LNA_OUT_n) to the corresponding port of the first RF chip.

[0332] exist Figure 19In the figure, the common transmit and receive path of B41's transmit signal polling to the B41 DM antenna can be seen as the path shown by the thick dotted line, a separate transmit path of B41's transmit signal can be seen as the path shown by the thick solid line, and a receive path of B41's receive signal can be seen as the path shown by the thick dashed line.

[0333] exist Figure 19 In the RF front-end module shown, the receiving path of other MHB band received signals after being received by the DM antenna can be seen as follows: Figure 18 The relevant descriptions of the embodiments will not be repeated here. For other MHB band transmit signal polling of a DM antenna's transmit path, please refer to... Figure 18 The relevant descriptions in the embodiments will not be repeated here.

[0334] The above Figure 19 The values ​​of the registers corresponding to the logic paths of DPXT1001 can be found in Table 4. Figure 19 In this context, two antenna frequency bands are used independently. For example, independent antenna frequency band 1 is B40, and independent antenna frequency band 2 is B41. Table 4 illustrates this using the example of register values ​​stored in register 1:

[0335] Table 4

[0336] Logical path The value of register 1 OFF (Off state) 00 Independent use of antenna band 1 to ANT1 conduction 01 Independent use of antenna band 1 to ANT2 conduction 02 Independent use of antenna band 2 to ANT1 conduction 03 Independent use of antenna band 2 to ANT2 conduction 04 Independent use of antenna band 1 to TRX1 conduction 05 Independent use of antenna band 2 to TRX3 conduction 06 TRX1 to TRX3 conduction 07 TRX1 to TRX2 conduction 08 ...... ......

[0337] In Table 4, independently used antenna band 1 and independently used antenna band 2 can be B40 and B41 mentioned above. When the value of register 1 is 00, the DPXT1001 enters the off state. When the value of register 1 is 01, independently used antenna band 1 to ANT1 is turned on, that is, ports 4 and 1 of the DPXT1001 are turned on; when the value of register 1 is 02, independently used antenna band 1 to ANT2 is turned on, that is, ports 4 and 2 of the DPXT1001 are turned on; when the value of register 1 is 03, independently used antenna band 2 to ANT1 is turned on, that is, ports 5 and 1 of the DPXT1001 are turned on; when the value of register 1 is 04, independently used antenna band 2 to ANT2 is turned on, that is, ports 5 and 1 of the DPXT1001 are turned on. When register 1 is 05, antenna band 1 to TRX1 is independently connected, meaning ports 4 and 8 of the DPXT1001 are connected. When register 1 is 06, antenna band 2 to TRX3 is independently connected, meaning ports 5 and 9 of the DPXT1001 are connected. When register 1 is 07, TRX1 to TRX3 are connected, meaning ports 8 and 9 of the DPXT1001 are connected. When register 1 is 08, TRX1 to TRX2 are connected, meaning ports 8 and 3 of the DPXT1001 are connected. In Table 4, X indicates that there is no valid register value for the corresponding logical path in the register, and is either empty or ineffective.

[0338] Optionally, the values ​​of the DPXT1001 registers can also be stored in two separate registers, such as register 1 and register 2. The register value corresponding to the auxiliary port's on / off state can be stored in register 2, as shown in Table 5.

[0339] Table 5

[0340] Logical path The value of register 1 The value of register 2 OFF (Off state) 00 00 Independent use of antenna band 1 to ANT1 conduction 01 X Independent use of antenna band 1 to ANT2 conduction 02 X Independent use of antenna band 2 to ANT1 conduction 03 X Independent use of antenna band 2 to ANT2 conduction 04 X Independent use of antenna band 1 to TRX1 conduction 05 X Independent use of antenna band 2 to TRX3 conduction 06 X TRX1 to TRX3 conduction X 01 TRX1 to TRX2 conduction X 02 ...... ...... ......

[0341] In Table 5, independently used antenna band 1 and independently used antenna band 2 can be B40 and B41 mentioned above. When the value of register 1 is 00 and the value of register 2 is also 00, the DPXT1001 enters the off state. When the value of register 1 is 01 and the value of register 2 is X, independently used antenna band 1 to ANT1 is turned on, that is, ports 4 and 1 of the DPXT1001 are turned on; when the value of register 1 is 02 and the value of register 2 is X, independently used antenna band 1 to ANT2 is turned on, that is, ports 4 and 2 of the DPXT1001 are turned on; when the value of register 1 is 03 and the value of register 2 is X, independently used antenna band 2 to ANT1 is turned on, that is, ports 5 and 1 of the DPXT1001 are turned on; when the value of register 1 is 04 and the value of register 2 is X, independently used antenna band 2 to ANT2 is turned on, that is, ports 5 and 1 of the DPXT1001 are turned on. 2. When register 1 has a value of 05 and register 2 has a value of X, antenna band 1 to TRX1 is independently connected, meaning ports 4 and 8 of the DPXT1001 are connected. When register 1 has a value of 06 and register 2 has a value of X, antenna band 2 to TRX3 is independently connected, meaning ports 5 and 9 of the DPXT1001 are connected. When register 1 has a value of XX and register 2 has a value of 01, TRX1 to TRX3 is connected, meaning ports 8 and 9 of the DPXT1001 are connected. When register 1 has a value of XX and register 2 has a value of 02, TRX1 to TRX2 is connected, meaning ports 8 and 3 of the DPXT1001 are connected. In Table 5, X indicates that there is no valid register value for the corresponding logical path in the register, it is a null value or ineffective.

[0342] Optionally, in Figures 17 to 19 Based on the previous embodiment, when there are a larger number of frequency bands using DM antennas independently, a DPXT with more auxiliary ports can be used to achieve compatibility of the transmit and receive paths. The specific implementation principle and structure are the same as described above. Figures 17 to 19 The RF front-end module is similar, so it will not be described in detail here.

[0343] Figures 17 to 19 By introducing the DPXT1001 with auxiliary ports, the need for additional switches, filters, and other components is avoided. This allows for path switching in the presence of a separate DM antenna in the frequency band, ensuring antenna performance and avoiding the introduction of additional components, thus saving costs. It also simplifies RF wiring, saves layout area, facilitates module miniaturization, and reduces insertion loss in the path.

[0344] Figure 20This application provides another example of a radio frequency (RF) front-end module. The RF front-end module includes: a first transmitting module, a first receiving module, a second transmitting module, and a second receiving module. Figure 20 The structures of the first transmitting module, the second transmitting module, and the second receiving module can be found in [reference]. Figure 12 And a description of related modules in other related embodiments. The difference is that, Figure 20 Switches 1014 and 1033 are no longer needed; instead, the transmission path is established by connecting the SRS polling ports of the first and second transmitting modules. Optionally, Figure 20 The antenna switch of the second receiving module was replaced by DPXT1063 instead of SPXT. Figure 20 The first receiving module in the example can be found as follows: Figure 15 The relevant description of graph a in the text.

[0345] exist Figure 20 In this configuration, the antenna port ANT1 of the first receiving module is connected to the DM antenna, and the antenna port ANT2 of the first receiving module is connected to the transceiver port TRX of the first transmitting module. The transceiver port TRX1 of the first receiving module is connected to the B40DM antenna. The transceiver port TRX2 of the first receiving module is connected to the antenna port ANT1 of the first transmitting module. The antenna port ANT2 of the first transmitting module is connected to the PM antenna. The SRS polling port SRS_IN / OUT (B40 / B41_SRS_IN / OUT) of the first transmitting module is connected to the SRS polling port SRS_IN / OUT (B40 / B41_SRS_IN / OUT) of the second transmitting module.

[0346] See also Figure 20 As shown, the antenna port ANT1 of the second transmitting module is connected to the PRX antenna, and the antenna port ANT2 of the second transmitting module is connected to the transceiver port TRX of the second receiving module. The transceiver port TRX2 of the second transmitting module is connected to the antenna port ANT1 of the second receiving module. The antenna port ANT2 of the second receiving module is connected to the DRX antenna.

[0347] exist Figure 20 In the RF front-end module shown, taking B40 as an example, when the first transmitter module performs SRS polling, the four transmitter paths include: transmitter paths F-1 to F-4; when the second transmitter module performs SRS polling, the four transmitter paths include: transmitter paths F-5 to F-8. The specific descriptions of transmitter paths F-1 to F-8 are as follows:

[0348] B40 Transmission Path F-1: After the B40 transmission signal is output from the first RF chip, it is amplified by HB PA1026 in the first transmission module corresponding to the HB band. The amplified B40 transmission signal enters switch 1024 through the common port of switch 1024. After switching by switch 1024, the B40 transmission signal enters filter 1021 through the discrete port (port 6) of switch 1024 for filtering. The filtered B40 transmission signal enters DPXT1017 through port 4, and after switching by DPXT1017, it is transmitted from port 2 of DPXT1017 to the antenna port ANT2 of the first transmission module, and then transmitted to the PM antenna for transmission.

[0349] Transmit path F-2 of B40: The path of the B40's transmit signal from the first RF chip to DPXT1017 is the same as transmit path F-1. The difference is that the B40's transmit signal is switched by DPXT1017, output from port 1 of DPXT1017, and transmitted through the antenna port ANT1 of the first transmit module to the transceiver port TRX2 of the first receive module. Afterwards, the B40's transmit signal enters DPXT1001 through port 3, is switched by DPXT1001, output from port 8 of DPXT1001, and is transmitted through the transceiver port TRX1 of the first receive module to the B40 DM antenna for transmission.

[0350] B40 Transmission Path F-3: After the B40 transmission signal is output from the first RF chip, it is amplified by HB PA1026 corresponding to the HB band in the first transmission module. The amplified B40 transmission signal enters switch 1024 from the common port of switch 1024. After switching by switch 1024, the B40 transmission signal is output from the auxiliary port (port 2) of switch 1024 to port SRS_IN of the first transmission module, and then enters B40 / B41_SRS_IN / OUT of the second transmission module. After entering the second transmission module, the B40 transmission signal is output from a discrete port (port 6) of switch 1041 through switching, and enters the corresponding filter 1038 for filtering. After filtering, the B40 transmission signal enters DPXT1034 through port 4 of the second transmission module, and after switching by DPXT1034, it is output from port 1 of DPXT1034. Subsequently, the B40's transmission signal is transmitted to the PRX antenna through the antenna port ANT1 of the second transmission module.

[0351] Transmit path F-4 of B40: The path of the B40's transmit signal from the first RF chip to DPXT1034 is the same as transmit path F-3. The difference is that the B40's transmit signal is switched by DPXT1034, output from port 2 of DPXT1034, and then output to the transceiver port TRX of the second receiver module through the antenna port ANT2 of the second transmit module. The B40's transmit signal enters DPXT1063 from port 3, is switched by DPXT1063, and is output from port 2 of DPXT1063 to the antenna port ANT2 of the second receiver module, and then transmitted to the DRX antenna for transmission.

[0352] The B40 transmission path F-5: After the B40's transmission signal is output from the second RF chip, it is amplified by inputting to HB PA1043 via the input terminal corresponding to the HB band in the second transmission module. The amplified B40 transmission signal enters switch 1041 from its common terminal (port 1), and after switching by switch 1041, it is output from a discrete terminal (port 6) of switch 1041, entering filter 1038 for filtering. After filtering, the B40 transmission signal enters DPXT1034 through port 4, and after switching by DPXT1034, it is output from port 1, and then transmitted to the PRX antenna through the antenna port ANT1 of the second transmission module for transmission.

[0353] Transmit path F-6 of B40: After the B40 transmit signal is output from the second RF chip, the path before reaching port 4 of DPXT1034 is the same as transmit path F-5. The difference is that the B40 transmit signal is output from port 2 of DPXT1034 and transmitted to the transceiver port TRX of the second receiver module through the antenna port ANT2 of the second transmit module. The B40 transmit signal enters DPXT1063 from port 3, and after switching on and off of DPXT1063, it is output from port 2 of DPXT1063 to the antenna port ANT2 of the second receiver module, and then transmitted to the DRX antenna for transmission.

[0354] The B40 transmission path F-7: After the B40's transmission signal is output from the second RF chip, it is amplified by inputting HB PA1043 through the input terminal corresponding to the HB band in the second transmission module. The amplified B40 transmission signal enters switch 1041 from its common terminal (port 1), and after being switched by switch 1041, it is transmitted from port 2 of switch 1041 to port SRS_IN of the second transmission module. Then, it enters the first transmission module through port SRS_IN. After entering the first transmission module, the B40 transmission signal enters switch 1024 through port 2, and after being switched by switch 1024, it is output from a discrete terminal (port 6) of switch 1024. Finally, the B40 transmission signal enters filter 1021 for filtering. The filtered B40 transmit signal enters the DPXT1017 through port 4, and after being switched by the DPXT1017, it is transmitted from port 2 of the DPXT1017 to the antenna port ANT2 of the first transmit module, and then transmitted to the PM antenna for transmission.

[0355] Transmit path F-8 of B40: The path from the output of the second RF chip to DPXT1017 is the same as transmit path F-7. The difference is that after being switched by DPXT1017, the B40 transmit signal is output from port 1 of DPXT1017 and then transmitted to the antenna port ANT1 of the first transmit module. Afterwards, the B40 transmit signal enters the first receive module through the transceiver port TRX2. The B40 transmit signal is then transmitted from the transceiver port TRX2 of the first receive module to port 3 of DPXT1001. The B40 transmit signal is then switched by DPXT1001 and transmitted from port 8 of DPXT1001 to the transceiver port TRX1 of the first receive module. Finally, the B40 transmit signal is transmitted from the transceiver port TRX1 of the first receive module to the B40 DM antenna for transmission.

[0356] In receive mode, the B40 received signal from the B40 DM antenna enters the first receiving module through the transceiver port TRX1, and then enters DPXT1001 through port 8. After switching by DPXT1001, the B40 received signal is output from port 4 of DPXT1001 to filter 1003 for filtering. After filtering, the B40 received signal enters switch 1004 through a discrete terminal of switch 1004, and after switching by switch 1004, it is output from the common terminal of switch 1004 to LNA1005. The B40 received signal is amplified by LNA1005 and output from the output terminal of LNA1005 to MUX1006. After switching by MUX1006, it is input from the corresponding port (LNA_OUT_n) to the corresponding port of the first RF chip.

[0357] exist Figure 20 In the figure, the common transmission path of the B40 transmit signal polling to the B40DM antenna can be seen as the path shown by the thick dotted line. The two separate transmission paths of the B41 transmit signal can be seen as the paths shown by the thick solid lines in the figure. The one reception path of the B41 receive signal can be seen as the thick dashed line in the figure.

[0358] exist Figure 20 In the RF front-end module shown, received signals from other MHB bands can be received through the DM antenna and enter the first receiving module through antenna port ANT1. In the first receiving module, received signals from other MHB bands enter DPXT1001 from port 1, are switched by DPXT1001, and are output from other ports (e.g., port 6, port 7) of DPXT1001, and transmitted to the corresponding filters for filtering. Afterwards, received signals from other MHB bands enter switch 1004 or switch 1010 through a discrete port of switch 1004 or switch 1010, are switched by switch 1004 or switch 1010, and are output from the common terminal of switch 1004 or switch 1010 to LNA1005 or LNA1011. The received signals from other MHB bands are amplified by LNA1005 or LNA1011 and output from the output terminal of LNA1005 or LNA1011 to MUX1006. After being switched by MUX1006, they are input from the corresponding port (LNA_OUT_n) to the corresponding port of the first RF chip.

[0359] exist Figure 20In the example shown, when the DM antenna transmits and receives signals from B40 without interference—for example, when the DM antenna is not used as a Wi-Fi antenna (or when there is no frequency band conflicting with B40)—the B40's receiving path can also receive signals from the DM antenna, enter DPXT1001 through port 1, and after switching by DPXT1001, output from port 4 of DPXT1001, entering filter 1003. After filtering, the B40's received signal is transmitted to a discrete port of switch 1004. After switching by switch 1004, it is output from the common port of switch 1004 to LNA1005, and then output from the output port of LNA1005 to MUX1006. After switching by MUX1006, the B40's received signal is input from the corresponding port LNA_OUT_n to the corresponding port of the first RF chip.

[0360] For other MHB band transmission signals polling the DM antenna, one transmission path can be found in part of transmission path F-2: the path from the output of the first RF chip to the DPXT1001 for other MHB band transmission signals is the same as transmission path F-2. The difference is that the transmission signals of other MHB bands are switched by the DPXT1001, output from port 1 of the DPXT1001, and transmitted to the DM antenna for transmission through the antenna port ANT1 of the first transmission module.

[0361] Another transmission path for polling the DM antenna with transmission signals from other MHB bands can be found in part of transmission path F-8: After the transmission signals from other MHB bands are output from the second RF chip, the path before DPXT1001 is the same as transmission path F-2. The difference is that the transmission signals from other MHB bands are switched by DPXT1001, output from port 1 of DPXT1001, and transmitted to the DM antenna for transmission through the antenna port ANT1 of the first transmission module.

[0362] For the transmission paths of other MHB bands that poll the transmission signals of each antenna, please refer to the other transmission paths of B40. The only difference is that the filters through which the signals flow are different, and the ports of the switches, PAs and LNAs through which the signals flow may be different, which will not be elaborated here.

[0363] In some embodiments, Figure 20 The first receiving module in the middle can also adopt Figure 15 The structure and path configuration are shown in Figure b. The transmit and receive paths for B40 and B41 can be referenced. Figure 20The relevant description is as follows. The difference lies in that the received signal of B41 is received through the B40 DM antenna (also referred to as the B40 / B41 DM antenna) and enters the first receiving module through the antenna transceiver port TRX1 of the first receiving module. After that, the received signal of B41 enters DPXT1001 through port 8, and after being switched by DPXT1001, it is output from port 5 of DPXT1001. Then it passes through filter 1009, switch 1004, LNA1005 and MUX1006 in sequence, which will not be described in detail here.

[0364] Figure 21 This application provides another example of a radio frequency (RF) front-end module. The RF front-end module includes: a first transmitting module, a first receiving module, a second transmitting module, and a second receiving module. Figure 21 The structures of the first transmitting module, the second transmitting module, and the second receiving module can be found in [reference]. Figure 20 Descriptions of other related modules. Figure 21 The first receiving module in the example can be found as follows: Figure 15 The relevant description of diagram c in the diagram.

[0365] exist Figure 21 The connection relationships between the various transmitting modules, receiving modules, and antennas can also be found in [reference needed]. Figure 20 The description of the relevant embodiments is as follows. The difference is that the first receiving module also includes a transceiver port TRX3. The transceiver port TRX3 of the first receiving module is connected to the B41 DM antenna and port 9 of the DPXT1001, respectively.

[0366] exist Figure 21 The examples illustrate B40 using a single B40 DM antenna and B41 using a single B41 DM antenna. Figure 21 The relevant description of the B40 transceiver path in the embodiment can be found in [reference needed]. Figure 20 The relevant descriptions will not be repeated here.

[0367] Taking B41 as an example, when the first transmission module performs SRS polling, the four transmission paths include: transmission path G-1 to transmission path G-4; when the second transmission module performs SRS polling, the four transmission paths include: transmission path G-5 to transmission path G-8. The specific descriptions of transmission paths G-1 to G-8 are as follows:

[0368] B41 Transmission Path G-1: After the B41 transmission signal is output from the first RF chip, it is amplified by HB PA1026 in the first transmission module corresponding to the HB band. The amplified B41 transmission signal enters switch 1024 through the common port of switch 1024. After switching by switch 1024, the B41 transmission signal enters filter 1022 through the discrete port (port 5) of switch 1024 for filtering. The filtered B41 transmission signal enters DPXT1017 through port 3, and after switching by DPXT1017, it is transmitted from port 2 of DPXT1017 to the antenna port ANT2 of the first transmission module, and then transmitted to the PM antenna for transmission.

[0369] Transmit path G-2 of B41: The path of the B41's transmit signal from the first RF chip to DPXT1017 is the same as transmit path G-1. The difference is that the B41's transmit signal is switched by DPXT1017, output from port 1 of DPXT1017, and transmitted through the antenna port ANT1 of the first transmit module to the transceiver port TRX2 of the first receive module. Afterwards, the B41's transmit signal enters DPXT1001 through port 3, is switched by DPXT1001, output from port 9 of DPXT1001, and is transmitted through the transceiver port TRX3 of the first receive module to the B41 DM antenna for transmission.

[0370] B41 Transmit Path G-3: After the B41 transmit signal is output from the first RF chip, it is amplified by HB PA1026 corresponding to the HB band in the first transmit module. The amplified B41 transmit signal enters switch 1024 from the common port of switch 1024. After switching by switch 1024, the B41 transmit signal is output from the auxiliary port (port 2) of switch 1024 to port SRS_IN of the first transmit module, and then enters B40 / B41_SRS_IN / OUT of the second transmit module. After entering the second transmit module, the B41 transmit signal is output from a discrete port (port 5) of switch 1041 through switching, and enters the corresponding filter 1039 for filtering. After filtering, the B41 transmit signal enters DPXT1034 through port 3 of the second transmit module, and after switching by DPXT1034, it is output from port 1 of DPXT1034. Subsequently, the B41's transmission signal is transmitted to the PRX antenna through the antenna port ANT1 of the second transmission module.

[0371] Transmit path G-4 of B41: The path of the B41 transmit signal from the first RF chip to DPXT1034 is the same as transmit path G-3. The difference is that the B41 transmit signal is switched by DPXT1034, output from port 2 of DPXT1034, and then output to the transceiver port TRX of the second receiver module through the antenna port ANT2 of the second transmit module. The B41 transmit signal enters DPXT1063 from port 3, is switched by DPXT1063, and is output from port 2 of DPXT1063 to the antenna port ANT2 of the second receiver module, and then transmitted to the DRX antenna for transmission.

[0372] B41's transmission path G-5: After the B41's transmission signal is output from the second RF chip, it is amplified by inputting to HB PA1043 via the input terminal corresponding to the HB band in the second transmission module. The amplified B41 transmission signal enters switch 1041 through its common port (port 1), and after being switched by switch 1041, it is output from a discrete terminal (port 5) of switch 1041, entering filter 1039 for filtering. After filtering, the B41 transmission signal enters DPXT1034 through port 3, and after being switched by DPXT1034, it is output from port 1, and then transmitted to the PRX antenna through the antenna port ANT1 of the second transmission module for transmission.

[0373] Transmit path G-6 of B41: After the B41 transmit signal is output from the second RF chip, the path before reaching port 4 of DPXT1034 is the same as transmit path G-5. The difference is that the B41 transmit signal is output from port 2 of DPXT1034 and transmitted to the transceiver port TRX of the second receiver module through the antenna port ANT2 of the second transmit module. The B41 transmit signal enters DPXT1063 from port 3, and after switching on and off of DPXT1063, it is output from port 2 of DPXT1063 to the antenna port ANT2 of the second receiver module, and then transmitted to the DRX antenna for transmission.

[0374] B41's transmission path G-7: After the B41's transmission signal is output from the second RF chip, it is amplified by inputting to HB PA1043 via the input terminal corresponding to the HB band in the second transmission module. The amplified B41 transmission signal enters switch 1041 from its common terminal (port 1), and after being switched by switch 1041, it is transmitted from port 2 of switch 1041 to port SRS_IN of the second transmission module. Then, it enters the first transmission module via port SRS_IN. After entering the first transmission module, the B41 transmission signal enters switch 1024 via port 2, and after being switched by switch 1024, it is output from a discrete terminal (port 5) of switch 1024. Finally, the B41 transmission signal enters filter 1022 for filtering. The filtered B41 transmit signal enters DPXT1017 through port 3 of DPXT1017, and after being switched by DPXT1017, it is transmitted from port 2 of DPXT1017 to the antenna port ANT2 of the first transmit module, and then transmitted to the PM antenna for transmission.

[0375] Transmit path G-8 of B41: The path of the B41 transmit signal from the second RF chip to DPXT1017 is the same as transmit path G-7. The difference is that the B41 transmit signal is switched by DPXT1017, and after being output from port 1 of DPXT1017, it is transmitted to the antenna port ANT1 of the first transmit module. Then, the B41 transmit signal enters the first receive module through the transceiver port TRX2. The B41 transmit signal is transmitted from the transceiver port TRX2 of the first receive module to port 3 of DPXT1001. The B41 transmit signal is switched by DPXT1001, and is transmitted from port 9 of DPXT1001 to the transceiver port TRX3 of the first receive module. Finally, the B41 transmit signal is transmitted from the transceiver port TRX3 of the first receive module to the B41 DM antenna for transmission.

[0376] In other words, Figure 22 In the RF front-end module shown, whether the first or second transmitting module performs SRS polling of B41, the B41 transmitting signal, after entering port 3 of DPXT1001, is switched by DPXT1001 and transmitted from port 9 of DPXT1001 to the transceiver port TRX3 of the first receiving module, and then transmitted to the B41DM antenna for transmission.

[0377] In receive mode, the received signal from B41 received by the B41 DM antenna enters the first receiving module through the transceiver port TRX3, and then enters DPXT1001 through port 9. After switching by DPXT1001, the received signal from B41 is output from port 5 of DPXT1001 to filter 1009 for filtering. After filtering, the received signal from B41 enters switch 1004 through a discrete terminal of switch 1004, and after switching by switch 1004, it is output from the common terminal of switch 1004 to LNA1005. The received signal from B41 is amplified by LNA1005 and output from the output terminal of LNA1005 to MUX1006. After switching by MUX1006, it is input from the corresponding port (LNA_OUT_n) to the corresponding port of the first RF chip.

[0378] exist Figure 22 In the figure, the common transmit and receive path of B41's transmit signal polling to the B41 DM antenna can be seen as the path shown by the thick dotted line. The two separate transmit paths of B41's transmit signal can be seen as the paths shown by the thick solid lines in the figure. And the one receive path of B41's receive signal can be seen as the thick dashed line in the figure.

[0379] Optionally, in Figure 21 In the example shown, when the DM antenna transmits and receives signals from B41 without interference—for example, when there is no frequency band conflicting with B41—the received signal from B41 can also be received from the DM antenna, enter DPXT1001 through port 1, be switched by DPXT1001, be output from port 5 of DPXT1001, and be transmitted to filter 1009. After filtering, the received signal from B41 enters the discrete terminal of switch 1004, is switched by switch 1004, is output from the common terminal of switch 1004 to LNA1005, and is output from the output terminal of LNA1005 to MUX1006. After switching by MUX1006, the received signal from B41 is input from the corresponding port LNA_OUT_n to the corresponding port of the first RF chip.

[0380] exist Figure 21 In the RF front-end module shown, the path status of the transmit and receive signals in other MHB bands can also be found in the relevant descriptions in the foregoing embodiments, and will not be repeated here.

[0381] The above Figure 20 and Figure 21In related embodiments, by using DPXT including an auxiliary port to switch the transmit and receive paths of the frequency band using a separate antenna, antenna performance can be ensured, and the introduction of more components can be avoided, thereby saving costs. At the same time, RF wiring is simplified, layout area is saved, module miniaturization is facilitated, and insertion loss on the path is reduced.

[0382] Optionally, in the above Figure 15 Based on this, the auxiliary port of the DPXT1001 can also connect to other ports such as... Figure 22 As shown. In Figure 22 In diagram a, port 8 of the DPXT1001 can communicate with ports 3 and 5, as well as ports 1 and 2. Figure 22 In diagram b, port 8 of the DPXT1001 can communicate with ports 3, 4, and 5, as well as ports 1 and 2. Figure 22 In diagram c, port 8 of DPXT1001 can communicate with ports 3 and 4, as well as ports 1 and 2; port 9 of DPXT1001 can communicate with ports 3 and 5, as well as ports 1 and 2.

[0383] about Figure 22 The application scenarios of the receiving module can be referred to the relevant descriptions in other embodiments of this application. It can also realize more different path states when there are other path switching requirements. This application does not limit this.

[0384] The foregoing has detailed examples of the radio frequency front-end module provided in this application. It is understood that the corresponding device, in order to achieve the above functions, includes hardware structures and / or software modules corresponding to the execution of each function. Those skilled in the art should readily recognize that, based on the units and algorithm steps of the examples described in conjunction with the embodiments disclosed herein, this application can be implemented in hardware or a combination of hardware and computer software. Whether a function is executed in hardware or by computer software driving hardware depends on the specific application and design constraints of the technical solution. Those skilled in the art can use different methods to implement the described functions for each specific application, but such implementation should not be considered beyond the scope of this application.

[0385] This application also provides a radio frequency front-end module control method, which is applied to the radio frequency front-end module mentioned above. This radio frequency front-end module control method is used to control the radio frequency front-end module to achieve the state in the above embodiment. The implementation principle and technical effect can be found in the relevant description of the radio frequency front-end module, and will not be repeated here.

[0386] This application also provides an electronic device, including the aforementioned radio frequency front-end module. The electronic device provided in this embodiment can be... Figure 1 The terminal device 100 shown.

[0387] This application also provides an electronic device, including the processor described above. The electronic device provided in this embodiment may be... Figure 1 The terminal device 100 shown is used to execute the above-described RF front-end module control method. When using integrated units, the terminal device may include a processing module, a storage module, and a communication module. The processing module can be used to control and manage the actions of the terminal device; for example, it can support the terminal device in executing steps performed by the display unit, detection unit, and processing unit. The storage module can support the terminal device in executing stored program code and data. The communication module can support communication between the terminal device and other devices.

[0388] The processing module can be a processor or a controller. It can implement or execute various exemplary logic blocks, modules, and circuits described in conjunction with the disclosure of this application. The processor can also be a combination of functions that implement computing capabilities, such as a combination of one or more microprocessors, a digital signal processor (DSP), and a microprocessor, etc. The storage module can be a memory. The communication module can specifically be a radio frequency circuit, a Bluetooth chip, a Wi-Fi chip, or other devices that interact with other terminal devices.

[0389] In one embodiment, when the processing module is a processor and the storage module is a memory, the terminal device involved in this embodiment can be a device having... Figure 1 The device with the structure shown.

[0390] This application also provides a computer-readable storage medium storing a computer program that, when executed by a processor, causes the processor to perform the radio frequency front-end module control method described in any of the above embodiments.

[0391] This application also provides a computer program product that, when run on a computer, causes the computer to perform the aforementioned related steps to implement the radio frequency front-end module control method in the above embodiments.

[0392] In this embodiment, the electronic device, computer-readable storage medium, computer program product or chip are all used to execute the corresponding methods provided above. Therefore, the beneficial effects that can be achieved can be referred to the beneficial effects of the corresponding methods provided above, and will not be repeated here.

[0393] In the several embodiments provided in this application, it should be understood that the disclosed apparatus and methods can be implemented in other ways. For example, the apparatus embodiments described above are merely illustrative. For instance, the division of modules or units is only a logical functional division, and in actual implementation, there may be other division methods. For example, multiple units or components may be combined or integrated into another device, or some features may be ignored or not executed. Furthermore, the coupling or direct coupling or communication connection shown or discussed may be through some interfaces, indirect coupling or communication connection between devices or units. The replaced units may or may not be physically separate. The component shown as a unit may be one physical unit or multiple physical units, that is, it may be located in one place or distributed in multiple different places. Some or all of the units can be selected to achieve the purpose of this embodiment according to actual needs.

[0394] Furthermore, the functional units in the various embodiments of this application can be integrated into one processing unit, or each unit can exist physically separately, or two or more units can be integrated into one unit. The integrated unit can be implemented in hardware or as a software functional unit.

[0395] If the integrated unit is implemented as a software functional unit and sold or used as an independent product, it can be stored in a readable storage medium. Based on this understanding, the technical solutions of the embodiments of this application, in essence, or the parts that contribute to the prior art, or all or part of the technical solutions, can be embodied in the form of a software product. This software product is stored in a storage medium and includes several instructions to cause a device (which may be a microcontroller, chip, etc.) or processor to execute all or part of the steps of the methods of the various embodiments of this application. The aforementioned storage medium includes various media capable of storing program code, such as USB flash drives, portable hard drives, read-only memory (ROM), random access memory (RAM), magnetic disks, or optical disks.

[0396] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A radio frequency front-end module, characterized in that, include: The first transmitting module and the first receiving module; The first receiving module is used to couple with the first antenna and the second antenna respectively; The first antenna is used to receive signals in the first frequency band; The second antenna is used to receive signals from some or all frequency bands other than the first frequency band; The first receiving module includes: a first switch, a first filtering component, a first low-noise amplification component, and a first multiplexing switch; The first filtering component is coupled to the first switch and the first low-noise amplifier component respectively, and the first low-noise amplifier component is also coupled to the first multiplexer switch. In the first state, the received signal of the first frequency band passes sequentially through the first antenna, the first switch, the first filter, the first low-noise amplifier, and the first multiplexer switch before entering the first radio frequency chip; Wherein, the first filter is the filter in the first filtering component that matches the first frequency band, and the first low noise amplifier is the low noise amplifier in the first low noise amplification component that matches the first frequency band. The first switch is the first antenna switch in the first receiving module; The first antenna switch includes: a first auxiliary port and a second auxiliary port; The first antenna switch is coupled to the first filter through a first discrete port of the first antenna switch; The first antenna switch is coupled to the first antenna through the first auxiliary port; The first antenna switch is coupled to the second antenna through the first antenna port of the first antenna switch; The first receiving module further includes: a first switching component, wherein the first filtering component is coupled to the first low-noise amplification component through the first switching component; The first antenna switch is configured to switch the path of the transmitted signal and the received signal of the first frequency band. or, The first switch is a first switching switch, and the radio frequency front-end module further includes: a second switching switch; The first switching switch is coupled to the first antenna switch, the second switching switch and the first filter respectively; The first antenna switch includes: a first auxiliary port and a second auxiliary port; The first antenna switch is coupled to the first filter through a first discrete port of the first antenna switch; The first antenna switch is coupled to the first antenna through the first auxiliary port; The first antenna switch is coupled to the second antenna through the second switching switch; The first receiving module is coupled to the first antenna via the second switching switch; The first receiving module further includes: a first switching component, wherein the first filtering component is coupled to the first low-noise amplification component through the first switching component; The first antenna switch is configured to switch the path of the transmitted signal and the received signal of the first frequency band.

2. The radio frequency front-end module according to claim 1, characterized in that, When the first switch is the first antenna switch in the first receiving module: In the first state, the received signal of the first frequency band passes sequentially through the first antenna, the first auxiliary port of the first antenna switch, the first discrete port of the first antenna switch, the first filter, the second switch, the first low noise amplifier and the first multiplexer switch, and enters the first radio frequency chip. The second switch is the switch in the first switch assembly that corresponds to the first frequency band. In the second state, the transmitted signal of the first frequency band passes sequentially through the first transmitting module, the second auxiliary port of the first antenna switch, and the first auxiliary port of the first antenna switch to the first antenna.

3. The radio frequency front-end module according to claim 2, characterized in that, The radio frequency front-end module further includes: a first polling switch; The first polling switch is coupled to the first antenna switch through the second auxiliary port, and the first polling switch is also coupled to the first transmitting module and the third antenna respectively; The first polling switch is configured to switch the path of the transmit signal of the first frequency band; In the second state, the transmission signal of the first frequency band passes sequentially through the first transmission module, the first polling switch, the second auxiliary port of the first antenna switch, and the first auxiliary port of the first antenna switch to the first antenna.

4. The radio frequency front-end module according to claim 3, characterized in that, The radio frequency front-end module also includes: a second polling switch and a second transmit module; The second polling switch is coupled to the second transmitting module, the fourth antenna, and the first polling switch, respectively. The second transmitting module is also coupled to the fifth antenna; The second polling switch is configured to switch the path of the transmit signal of the first frequency band; In the third state, the transmission signal of the first frequency band passes sequentially through the second transmission module, the second polling switch, the first polling switch, the second auxiliary port of the first antenna switch, and the first auxiliary port of the first antenna switch to the first antenna.

5. The radio frequency front-end module according to claim 4, characterized in that, The first antenna switch further includes a third auxiliary port, through which the first antenna switch is coupled to the sixth antenna; The sixth antenna is used to receive signals from the second frequency band; The second antenna is used to receive received signals in frequency bands other than the first frequency band and the second frequency band; The first antenna switch is coupled through the second discrete port of the first antenna switch and the second filter, wherein the second filter is the filter in the first filtering component that matches the second frequency band; The first switching component is also configured to switch the path of the received signal in the second frequency band.

6. The radio frequency front-end module according to claim 5, characterized in that, In the fourth state, the received signal of the second frequency band sequentially passes through the sixth antenna, the third auxiliary port of the first antenna switch, the second discrete port of the first antenna switch, the second filter, the first switch assembly, the second low noise amplifier and the first multiplexer switch, and enters the first radio frequency chip; The second low-noise amplifier is a low-noise amplifier in the first low-noise amplification component that is matched with the second frequency band, and the second low-noise amplifier may be the same as or different from the first low-noise amplifier.

7. The radio frequency front-end module according to claim 6, characterized in that, The first polling switch is also configured to switch the path of the transmit signal of the second frequency band; In the fifth state, the transmitted signal of the second frequency band passes sequentially through the first transmitting module, the third auxiliary port of the first antenna switch, and the first auxiliary port of the first antenna switch to the sixth antenna.

8. The radio frequency front-end module according to claim 7, characterized in that, The first polling switch is also configured to switch the path of the transmit signal of the second frequency band; The second polling switch is also configured to switch the path of the transmit signal of the second frequency band; In the sixth state, the transmission signal of the second frequency band passes sequentially through the second transmission module, the second polling switch, the first polling switch, the third auxiliary port of the first antenna switch, and the first auxiliary port of the first antenna switch to the sixth antenna.

9. The radio frequency front-end module according to any one of claims 2 to 8, characterized in that, The second antenna, used to receive received signals in some or all frequency bands other than the first frequency band, includes: When the second antenna is in the first interference state, the second antenna is used to receive received signals from some or all frequency bands other than the first frequency band. The first interference state is the state in which the second antenna is interfered with by the first interference frequency band. The first interference frequency band is the frequency band that interferes with the signal of the first frequency band. When the second antenna is not in the first interference state, the second antenna is also used to receive the received signal of the first frequency band; In the seventh state, the received signal of the first frequency band sequentially passes through the second antenna, the first antenna port of the first antenna switch, the second discrete port of the first antenna switch, the first filter, the first switching assembly, the first low noise amplifier and the first multiplexer switch, and enters the first radio frequency chip; In the eighth state, the transmitted signal of the first frequency band passes sequentially through the first transmitting module, the second auxiliary port of the first antenna switch, and the first antenna port of the first antenna switch to the second antenna; In the seventh and eighth states, the second antenna is not in the first interference state.

10. The radio frequency front-end module according to any one of claims 6 to 8, characterized in that, The second antenna, used to receive signals in frequency bands other than the first and second frequency bands, includes: When the second antenna is in the second interference state, the second antenna is used to receive received signals from frequency bands other than the first frequency band and the second frequency band. The second interference state is the state in which the second antenna is interfered with by the second interference frequency band. The second interference frequency band is the frequency band that interferes with the signal of the second frequency band. When the second antenna is not in the second interference state, the second antenna is also used to receive the received signal of the second frequency band; In the ninth state, the received signal of the second frequency band sequentially passes through the first antenna, the first antenna port of the first antenna switch, the second discrete port of the first antenna switch, the second filter, the second low noise amplifier and the first multiplexer switch, and enters the first radio frequency chip; In the tenth state, the transmitted signal of the second frequency band passes sequentially through the first transmitting module, the third auxiliary port of the first antenna switch, and the first antenna port of the first antenna switch to the sixth antenna; In the ninth and tenth states, the second antenna is not in the second interference state.

11. The radio frequency front-end module according to claim 1, characterized in that, When the first switch is the first antenna switch in the first receiving module: The radio frequency front-end module further includes: a second transmitter module, wherein the polling port of the first transmitter module and the polling port of the second transmitter module are coupled; The first transmitting module is coupled to the third antenna, and the first transmitting module is also coupled to the first receiving module through the second auxiliary port of the first antenna switch.

12. The radio frequency front-end module according to claim 11, characterized in that, In the eleventh state, the received signal of the first frequency band sequentially passes through the first antenna, the first auxiliary port of the first antenna switch, the first discrete port of the first antenna switch, the first filter, the first switching assembly, the first low noise amplifier and the first multiplexer switch, and enters the first radio frequency chip. In the twelfth state, the transmission signal of the first frequency band passes sequentially through the first transmission module, the second auxiliary port of the first antenna switch, and the first auxiliary port of the first antenna switch to the first antenna.

13. The radio frequency front-end module according to claim 12, characterized in that, In the thirteenth state, the transmission signal of the first frequency band flows through the second transmission module, is transmitted from the polling port of the second transmission module to the polling port of the first transmission module, and then sequentially passes through the first transmission module, the first auxiliary port of the first antenna switch, and the second auxiliary port of the first antenna switch to the first antenna.

14. The radio frequency front-end module according to any one of claims 11 to 13, characterized in that, The first antenna switch further includes a third auxiliary port, and the first antenna switch is coupled to the sixth antenna through the third auxiliary port of the first antenna switch. The first antenna switch is coupled to the second discrete port of the first antenna switch and the second filter, wherein the second filter is the filter in the first filtering component that matches the second frequency band. The first switching component is also configured to switch the path of the received signal in the second frequency band.

15. The radio frequency front-end module according to claim 14, characterized in that, In the fourteenth state, the received signal of the second frequency band sequentially passes through the sixth antenna, the third auxiliary port of the first antenna switch, the second discrete port of the first antenna switch, the second filter, the third switch, the second low-noise amplifier, and the first multiplexer switch, and enters the first radio frequency chip. The second low-noise amplifier is a low-noise amplifier in the first low-noise amplification component that matches the second frequency band. The second low-noise amplifier and the first low-noise amplifier may be the same or different. The third switch is a switch in the first switch component that corresponds to the second frequency band.

16. The radio frequency front-end module according to claim 15, characterized in that, In the fifteenth state, the transmission signal of the second frequency band flows through the second transmission module, is transmitted from the polling port of the second transmission module to the polling port of the first transmission module, and then sequentially passes through the first transmission module, the first auxiliary port of the first antenna switch, and the third auxiliary port of the first antenna switch to the sixth antenna.

17. The radio frequency front-end module according to claim 1, characterized in that, The first switch is a first switching switch, and the RF front-end module further includes: in the case of a second switching switch: In the sixteenth state, the received signal of the first frequency band sequentially passes through the first antenna, the second switching switch, the first switching switch, the first filter, the second switch, the first low noise amplifier, and the first multiplexer switch, and enters the first radio frequency chip; The second switch is the switch in the first switch assembly that corresponds to the first frequency band.

18. The radio frequency front-end module according to claim 17, characterized in that, The radio frequency front-end module also includes: a third switching switch; The third switching switch is coupled to the first transmitting module and the second switching switch respectively; The third switching switch is configured to switch the path of the transmission signal of the first frequency band; In the seventeenth state, the transmission signal of the first frequency band passes sequentially through the first transmission module, the third switching switch, and the second switching switch to the first antenna.

19. The radio frequency front-end module according to claim 18, characterized in that, The first receiving module further includes a fourth switching switch, and the radio frequency front-end module further includes a fifth switching switch; The fourth switching switch is coupled to the second filter, the first antenna switch and the fifth switching switch respectively; The fifth switching switch is also coupled to the sixth antenna and the fourth switching switch; The fourth switching switch is also coupled to the second filter and the first antenna switch; The sixth antenna is used to receive signals from the second frequency band; The second antenna is used to receive received signals in frequency bands other than the first frequency band and the second frequency band.

20. The radio frequency front-end module according to claim 19, characterized in that, In the eighteenth state, the received signal of the second frequency band passes sequentially through the sixth antenna, the fifth switching switch, the fourth switching switch, the second filter, the third switch, the second low-noise amplifier, and the first multiplexing switch before entering the first radio frequency chip; The third switch is the switch in the first switch assembly that corresponds to the second frequency band. The third switch and the second switch may be the same as or different from each other. The second low-noise amplifier is the low-noise amplifier in the first low-noise amplifier assembly that matches the second frequency band. The second low-noise amplifier and the first low-noise amplifier may be the same as or different from each other.

21. The radio frequency front-end module according to claim 20, characterized in that, The fifth switching switch is also coupled to the third switching switch; In the nineteenth state, the transmitted signal of the first frequency band passes sequentially through the first transmitting module, the third switching switch, and the fifth switching switch to the sixth antenna.

22. An electronic device comprising a first antenna and a second antenna, characterized in that, It also includes the radio frequency front-end module as described in any one of claims 1 to 21.

Images