Radio frequency system and electronic equipment

Abstract

The invention provides a radio frequency system and electronic equipment, the radio frequency system comprises a first front-end transceiver module, a first antenna, a second antenna and a first receiving module, the first front-end transceiver module comprises at least one first PA module, a first LNA module, a second LNA module and a first antenna switch, a selection end of the front end side of the first antenna switch is selectively and electrically connected with one or more of the first PA module, the first LNA module and the second LNA module; the first antenna is electrically connected with one selection end of the rear end side of the first antenna switch; the second antenna is electrically connected with the other selection end of the rear end side of the first antenna switch; one end of the first receiving module is electrically connected with the other selection end of the front end side of the first antenna switch, and the other end of the first receiving module is electrically connected with the first LNA module and / or the second LNA module; the first antenna and the second antenna can make full use of the LNA module in the first front-end transceiver module, and the module utilization rate is improved.

Description

Technical Field

[0001] This application relates to the field of communication technologies, and particularly to a radio frequency system and an electronic device. Background Art

[0002] As the number of frequency bands that electronic devices need to support increases, the number of transceiver links that need to be set in the radio frequency front-end module also increases. Some radio frequency front-end modules (such as integrated power amplifier modules) include multiple low-noise amplifiers, but generally only some of the low-noise amplifiers are used for the main set receiving antenna and the diversity receiving antenna. Therefore, some low-noise amplifiers are relatively idle, resulting in module waste. How to improve the module utilization rate in the integrated power amplifier module has become a technical problem to be solved. Summary of the Invention

[0003] This application provides a radio frequency system that can improve the module utilization rate in the integrated power amplifier module and an electronic device having the radio frequency system.

[0004] In a first aspect, this application provides a radio frequency system, including:

[0005] A first front-end transceiver module, including at least one first PA module, a first LNA module, a second LNA module, and a first antenna switch. The first PA module is used to amplify the radio frequency signal of the first frequency band for transmission. Both the first LNA module and the second LNA module are used to amplify the received radio frequency signal of the first frequency band. One selection terminal on the front-end side of the first antenna switch can be selectively electrically connected to one or more of the first PA module, the first LNA module, and the second LNA module.

[0006] A first antenna, which is electrically connected to one selection terminal on the rear-end side of the first antenna switch.

[0007] A second antenna, which is electrically connected to another selection terminal on the rear-end side of the first antenna switch.

[0008] A first receiving module, the first receiving module includes at least one first filtering module, and the first filtering module is used to filter the first frequency band. One end of the first receiving module is electrically connected to another selection terminal on the front-end side of the first antenna switch, and the front-end side of the first receiving module is electrically connected to the first LNA module and / or the second LNA module.

[0009] The RF system provided by the present application includes a first front-end transceiver module, a first antenna, a second antenna, and a first receiving module. The first front-end transceiver module includes at least one first PA module, a first LNA module, a second LNA module, and a first antenna switch. The first PA module is used to amplify the RF signal in the first frequency band for transmission. Both the first LNA module and the second LNA module are used to amplify the RF signal in the first frequency band for reception. One selection terminal on the front-end side of the first antenna switch can be selectively electrically connected to one or more of the first PA module, the first LNA module, and the second LNA module. The first antenna is electrically connected to one selection terminal on the rear-end side of the first antenna switch. The second antenna is electrically connected to another selection terminal on the rear-end side of the first antenna switch. The first receiving module includes at least one first filtering module, and the first filtering module is used to filter the first frequency band. One end of the first receiving module is electrically connected to another selection terminal on the front-end side of the first antenna switch, and the other end of the first receiving module is electrically connected to the first LNA module and / or the second LNA module. The first antenna and the second antenna can be selectively conducted with the first LNA module and the second LNA module through the first antenna switch, or can be selectively conducted with the first LNA module and the second LNA module through the first antenna switch and the first receiving module. In this way, the first antenna and the second antenna can make full use of the LNA module in the first front-end transceiver module, improving the module utilization rate in the integrated power amplifier module.

[0010] In a second aspect, the present application provides a radio frequency system, including:

[0011] A low-frequency front-end transceiver module, including at least one low-frequency transmission path and at least one low-frequency reception path. The low-frequency transmission path is used to transmit RF signals in the low-frequency band, and the low-frequency reception path is used to receive the RF signals in the low-frequency band;

[0012] A medium-high-frequency front-end transceiver module, including at least one medium-high-frequency transmission path and at least one medium-high-frequency reception path. The medium-high-frequency transmission path is used to transmit RF signals in the medium-high-frequency band, and the medium-high-frequency reception path is used to receive the RF signals in the medium-high-frequency band;

[0013] A low-frequency receiving module, which is adjacent to the low-frequency front-end transceiver module. The low-frequency receiving module includes at least one low-frequency reception path, and the low-frequency reception path is used to receive the RF signals in the low-frequency band;

[0014] A medium-high-frequency receiving module, which is adjacent to the medium-high-frequency front-end transceiver module. The medium-high-frequency receiving module includes at least one medium-high-frequency reception path, and the medium-high-frequency reception path is used to receive the RF signals in the medium-high-frequency band.

[0015] In a third aspect, the present application provides an electronic device, which includes the radio frequency system as described in the first aspect or the second aspect. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments will be briefly introduced below.

[0017] Figure 1 is a schematic structural diagram of an electronic device provided in Embodiment 1 of the present application;

[0018] Figure 2 is an exploded structural diagram of the electronic device provided in Embodiment 1 of the present application;

[0019] Figure 3 is the framework of the first radio frequency system provided in Embodiment 2 of the present application Figure 1 ;

[0020] Figure 4 is the framework of the first radio frequency system provided in Embodiment 2 of the present application Figure 2 ;

[0021] Figure 5 is the framework of the first radio frequency system provided in Embodiment 2 of the present application Figure 3 ;

[0022] Figure 6 is the framework of the second radio frequency system provided in Embodiment 2 of the present application Figure 1 ;

[0023] Figure 7 is the framework of the second radio frequency system provided in Embodiment 2 of the present application Figure 2 ;

[0024] Figure 8 is the framework of the third radio frequency system provided in Embodiment 2 of the present application Figure 1 ;

[0025] Figure 9 is a framework diagram of the radio frequency system provided in Embodiment 3 of the present application;

[0026] Figure 10 is a partial top view of the electronic device provided in Embodiment 3 of the present application. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0027] The technical solutions of the present application will be clearly and completely described below with reference to the drawings. Obviously, the described embodiments of the present application are only a part of the embodiments, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments provided in the present application without creative efforts fall within the protection scope of the present application.

[0028] References herein to "embodiments" mean that the particular features, structures, or characteristics described in connection with the embodiments can be included in at least one embodiment of the present application. The phrase appears in various places in the specification and does not necessarily refer to the same embodiment, nor is it an exclusive, independent, or alternative embodiment to other embodiments. Those skilled in the art can explicitly and implicitly understand that the embodiments described in the present application can be combined with other embodiments.

[0029] The terms "first", "second", etc. in the specification and claims of the present application and in the above-mentioned drawings are used to distinguish different objects, rather than to describe a specific order. In addition, the terms "comprising" and "having" and any variations thereof are intended to cover non-exclusive inclusion. For example, a component or device that includes one or more components is not limited to the one or more components listed, but optionally further includes one or more components that are not listed but are inherent in the product shown, or one or more components that should be included based on the described function.

[0030] Please refer to Figure 1 , Figure 1 which is a schematic structural diagram of an electronic device 1000 provided in the first embodiment of the present application. The electronic device 1000 includes, but is not limited to, devices with communication functions such as mobile phones, tablet computers, laptop computers, computers, wearable devices, drones, robots, digital cameras, etc. The first embodiment of the present application is described by taking a mobile phone as an example, and other electronic devices can refer to this embodiment.

[0031] Please refer to Figure 2 , Figure 2 which is a partial exploded view of the electronic device 1000 provided in the first embodiment of the present application. Taking the electronic device 1000 as a mobile phone as an example, the working environment of the radio frequency system 100 is illustrated. The electronic device 1000 includes a display screen 200, a middle frame 300, and a rear cover 400 that are sequentially arranged along the thickness direction. Among them, the middle frame 300 includes a middle plate 310 and a frame 320 that surrounds the periphery of the middle plate 310. The frame 320 is a conductive frame, such as a metal frame. A receiving space is formed between the display screen 200 and the middle plate 310, and between the middle plate 310 and the rear cover 400 to receive components such as a main board 600, a camera module, a receiver module, a battery 700, a secondary board 800, and various sensors. One side of the frame 320 along the thickness direction surrounds the edge of the display screen 200, and the other side of the frame 320 along the thickness direction surrounds the edge of the rear cover 400 to form a complete appearance structure of the electronic device 1000. In this embodiment, the frame 320 and the middle plate 310 are an integral structure, and the frame 320 and the rear cover 400 are a split structure. The above is the working environment of the radio frequency system 100 taking a mobile phone as an example, but the radio frequency system 100 of the present application is not limited to the above working environment.

[0032] Please refer to Figure 3 , Embodiment 2 of the present application provides a radio frequency system 100.

[0033] Please refer to Figure 3 , the radio frequency system 100 further includes a radio frequency transceiver module 10, a radio frequency front-end module 20, a first antenna 31 and a second antenna 32. Among them, the radio frequency transceiver module 10 includes, but is not limited to, a radio frequency transceiver chip. Further optionally, the radio frequency system 100 further includes a baseband chip. The radio frequency front-end module 20 includes a first front-end transceiver module 21 and a first receiving module 22.

[0034] Among them, the baseband chip is connected to the radio frequency transceiver chip through a digital interface. The radio frequency transceiver chip is connected to the radio frequency front-end module 20 through an analog signal interface (such as differential I / Q signals). The baseband chip sends configuration instructions to the radio frequency transceiver chip and the radio frequency front-end through a control bus to dynamically adjust frequency bands, gains, filter parameters, etc. The baseband chip is responsible for digital signal processing, including at least one of modulation / demodulation, channel encoding / decoding, protocol stack processing, etc. The baseband chip includes, but is not limited to, a digital signal processor, a modulation / demodulation module, an interface unit, etc. The radio frequency transceiver chip is used to complete the conversion between baseband signals and radio frequency signals, including up / down conversion, digital-to-analog conversion, etc. The radio frequency transceiver chip includes, but is not limited to, a mixer, a frequency synthesizer, a digital-to-analog converter, etc. The mixer is used to modulate the baseband signal to the radio frequency band. The frequency synthesizer is used to generate an accurate carrier frequency.

[0035] The radio frequency front-end module 20 is used to amplify the power, filter, and impedance-match the radio frequency signal to ensure signal transmission efficiency. Further optionally, the radio frequency front-end module 20 includes multiple receiving paths, at least one transmitting path, and a transceiver switch. The transceiver switch is used to implement transceiver switching or multi-band switching. The transmitting path includes, but is not limited to, a power amplifier (PA) and a filter. The receiving path includes, but is not limited to, a low-noise amplifier (LNA) and a filter. The antenna is used to realize the mutual conversion between electromagnetic waves and electrical signals. The antenna can cover multiple different frequency bands and support MIMO multi-channel multiplexing. The antenna includes, but is not limited to, a radiation unit, a tuning circuit, etc. The radio frequency front-end module 20 is connected to the antenna through a radio frequency transmission line (such as a microstrip line or a coaxial cable). The above architecture of the radio frequency system 100 can form a transmitting link and a receiving link. Among them, the transmitting link is from the baseband chip → the radio frequency transceiver chip (up-conversion) → the transmitting path of the radio frequency front-end (power amplification / filtering) → the antenna. The receiving link is from the antenna → the receiving path of the radio frequency front-end (filtering / low-noise amplification) → the radio frequency transceiver chip (down-conversion) → the baseband chip.

[0036] The first front-end transceiver module 21 is an integrated power amplifier module. The first front-end transceiver module 21 integrates a power amplifier module (i.e., PA module), a low-noise amplifier module (i.e., LNA module), and a first antenna 31 switch. The first front-end transceiver module 21 includes, but is not limited to, an integrated chip.

[0037] Specifically, please refer to Figure 4 , the first front-end transceiver module 21 includes at least one first PA module 51, a first LNA module 61, a second LNA module 62, and a first antenna switch 41.

[0038] Optionally, the first PA module 51 is used to amplify the radio frequency signals in the first frequency band for transmission. The first frequency band includes, but is not limited to, the LB band (low frequency band, such as 0.6 - 1 GHz), the MB band (medium frequency band, such as 1.7 - 2.2 GHz), the HB band (high frequency band, such as 2.3 - 2.7 GHz), the UHB band (ultra-high frequency band, such as 3.3 - 3.8 GHz), the Wi-Fi band (such as 2.4 GHz, 5.1 - 5.8 GHz). In this embodiment, the first frequency band is taken as the LB band as an example. The first frequency band includes multiple low-frequency sub-bands. For example, the low-frequency sub-bands of the first frequency band include at least one of the B5, B8, B20, B26, and B28 bands.

[0039] The first PA module 51 is a power amplifier module for amplifying the LB band. That is, the first PA module 51 is an LB PA module. Further, the first PA module 51 is a 3G / 4G / 5G PA module.

[0040] Specifically, the first PA module 51 includes, but is not limited to, a power amplifier.

[0041] Optionally, the rear end side of the first PA module 51 is electrically connected to a switch unit (corresponding to the subsequent second switch unit), and the rear end side of the switch unit has multiple ports.

[0042] Of course, in other embodiments, the first front-end transceiver module 21 may further include a 2G LB PA module, or a 2G HB PA module, etc.

[0043] Both the first LNA module 61 and the second LNA module 62 are used to amplify the received signals in the first frequency band. Taking the first frequency band as the LB band as an example. The first LNA module 61 includes an LB LNA module. The first LNA module 61 includes, but is not limited to, a low-noise amplifier. The second LNA module 62 includes an LB LNA module. The second LNA module 62 includes, but is not limited to, a low-noise amplifier.

[0044] In this embodiment, it is taken as an example that the sub - frequency bands of the first frequency band in which the RF system 100 operates include B8, B26, and B28 frequency bands.

[0045] Optionally, the first LNA module 61 can be a low - noise amplifier for at least one sub - frequency band of the first frequency band. Optionally, the second LNA module 62 can be a low - noise amplifier for at least one sub - frequency band of the first frequency band.

[0046] For example, the first LNA module 61 is a low - noise amplifier for receiving B8 and B26, and the second LNA module 62 is a low - noise amplifier for receiving B28.

[0047] Optionally, refer to Figure 5 , the rear end side of the first LNA module 61 is electrically connected to a switch unit (corresponding to the subsequent fourth switch unit). The rear end side of the switch unit has multiple ports. For example, the rear end side of the switch unit of the first LNA module 61 has three ports, two of which are respectively electrically connected to the duplexer (or filter) of B8 and the duplexer (or filter) of B26, and the other port can be a reserved idle port. In other embodiments, the rear end side of the switch unit of the first LNA module 61 has four ports, or five ports, etc.

[0048] Optionally, refer to Figure 5 , the rear end side of the switch unit (corresponding to the subsequent fifth switch unit) of the second LNA module 62 has multiple ports. For example, the rear end side of the switch unit of the second LNA module 62 has three ports, one of which is electrically connected to the duplexer (or filter) of B28, and the other two ports can be reserved idle ports. In other embodiments, the rear end side of the switch unit of the second LNA module 62 has four ports, or five ports, etc.

[0049] Refer to Figure 5 , one selection terminal on the front end side of the first antenna switch 41 can be selectively electrically connected (conducted) to one or more of the first PA module 51, the first LNA module 61, and the second LNA module 62.

[0050] It should be noted that in this application, the side close to the RF transceiver module 10 is the front end side, and the side close to the antenna is the rear end side.

[0051] Optionally, the front end side of the first antenna switch 41 includes multiple selection terminals, which are respectively electrically connected to the first PA module 51, the first LNA module 61, and the second LNA module 62, and the multiple selection terminals can be selectively conducted to one or more of the first PA module 51, the first LNA module 61, and the second LNA module 62.

[0052] Further optionally, the first antenna switch 41 may be a switch module or a sub-module integrated by multiple switch modules.

[0053] Specifically, the first selection terminal on the front-end side of the first antenna switch 41 may be selectively electrically connected to the first PA module 51, the first LNA module 61, or the second LNA module 62, thereby realizing the switching of the transmission or reception paths of different frequency bands. The second selection terminal on the front-end side of the first antenna switch 41 is electrically connected to the first receiving module 22. The first selection terminal on the rear-end side of the first antenna switch 41 is electrically connected to the first antenna 31. The second selection terminal on the rear-end side of the first antenna switch 41 is electrically connected to the second antenna 32.

[0054] For example, the first antenna switch 41 may be a sub-module integrated by multiple switch modules. The front-end side of the first antenna switch 41 includes a first selection terminal, a second selection terminal, and a third selection terminal. The first selection terminal, the second selection terminal, and the third selection terminal on the front-end side of the first antenna switch 41 are respectively electrically connected to the duplexer (or filter) of B8, the duplexer (or filter) of B26, and the duplexer (or filter) of B28. The duplexer of B8 may correspond to the subsequent first duplexer. The duplexer of B26 may correspond to the subsequent second duplexer. The duplexer of B28 may correspond to the subsequent third duplexer. Of course, in other embodiments, please refer to Figure 5 and the first antenna switch 41 may also be electrically connected to the duplexer (or filter) of B8, the duplexer (or filter) of B26, and the duplexer (or filter) of B28 respectively through multiple selection terminals of a switch unit (such as the second switch unit).

[0055] The front-end side of the duplexer of B8 is respectively electrically connected to the switch unit on the rear-end side of the first PA module 51 and the switch unit on the rear-end side of the first LNA module 61. It should be noted that the electrical connections described in this application include direct electrical connections and also include indirect electrical connections through switch units or other devices.

[0056] Please refer to Figure 5 and the front-end side of the duplexer of B26 is respectively electrically connected to the switch unit on the rear-end side of the first PA module 51 and the switch unit on the rear-end side of the first LNA module 61. The front-end side of the duplexer of B28 is respectively electrically connected to the switch unit on the rear-end side of the first PA module 51 and the switch unit on the rear-end side of the second LNA module 62. Among them, the switch unit on the rear-end side of the first LNA module 61 has idle ports. The switch unit on the rear-end side of the second LNA module 62 has idle ports.

[0057] Please refer to Figure 5 and the first antenna 31 is electrically connected to a selection terminal on the rear-end side of the first antenna switch 41.

[0058] Please refer to Figure 5, the second antenna 32 is electrically connected to another selection terminal on the rear end side of the first antenna switch 41.

[0059] The first receiving module 22 can be formed by electrically connecting a filter integration module or a plurality of discrete filter modules.

[0060] Please refer to Figure 5 , the first receiving module 22 includes at least one first filtering module 71. The first filtering module 71 is used to filter the first frequency band.

[0061] The number of the first filtering modules 71 is one or more. In this embodiment, taking the sub - frequency bands of the first frequency band at which the radio frequency system 100 operates including B8, B26, and B28 frequency bands as an example, the number of the first filtering modules 71 is multiple. Each first filtering module 71 is used to filter one sub - frequency band of the first frequency band to support the radio frequency system 100 to receive multiple sub - frequency bands of the first frequency band.

[0062] The first receiving module 22 can be formed by electrically connecting a filter integration module or a plurality of discrete filter modules.

[0063] Please refer to Figure 5 , one end of the first receiving module 22 is electrically connected to another selection terminal on the front end side of the first antenna switch 41. As described above, one end of the first receiving module 22 is electrically connected to the second selection terminal on the front end side of the first antenna switch 41.

[0064] Please refer to Figure 5 , the front end side of the first receiving module 22 is electrically connected to the first LNA module 61 and / or the second LNA module 62. Further, the front end side of the first receiving module 22 is electrically connected to the switch unit on the rear end side of the first LNA module 61 and / or the switch unit on the rear end side of the second LNA module 62. Figure 5 The two ends of the dotted line between the first receiving module 22 and the first LNA module 61 and the second LNA module 62 in can be exchanged.

[0065] For example, the first filtering module 71 includes a B8 filtering module (corresponding to the subsequent first sub - filtering module), a B26 filtering module (corresponding to the subsequent second sub - filtering module), and a B28 filtering module (corresponding to the subsequent third sub - filtering module).

[0066] The front end side of the B8 filtering module is electrically connected to the switch unit on the rear end side of the second LNA module 62. The front end side of the B26 filtering module is electrically connected to the switch unit on the rear end side of the second LNA module 62. The front end side of the B28 filtering module is electrically connected to the switch unit on the rear end side of the first LNA module 61.

[0067] Please refer to Figure 5, wherein, the first PA module 51, B8 duplexer, and the first antenna 31 / second antenna 32 form the transmission path of B8. The first PA module 51, B26 duplexer, and the first antenna 31 / second antenna 32 form the transmission path of B26. The first PA module 51, B28 duplexer, and the first antenna 31 / second antenna 32 form the transmission path of B28.

[0068] Please refer to Figure 5 , wherein, the first antenna 31 / second antenna 32, B8 duplexer, and the first LNA module 61 form the first receiving path of B8. The first antenna 31 / second antenna 32, B8 filtering module, and the second LNA module 62 form the second receiving path of B8. The first antenna 31 / second antenna 32, B26 duplexer, and the first LNA module 61 form the first receiving path of B26. The first antenna 31 / second antenna 32, B26 filtering module, and the second LNA module 62 form the second receiving path of B26. The first antenna 31 / second antenna 32, B28 duplexer, and the second LNA module 62 form the first receiving path of B28. The first antenna 31 / second antenna 32, B28 filtering module, and the first LNA module 61 form the second receiving path of B28.

[0069] The above embodiments can achieve 1T2R for the B8 band, 1T2R for the B26 band, and 1T2R for the B28 band, and there is no need to additionally set an integrated LB or multi-band diversity receiving module integrated with an LNA module and a filtering module outside the first front-end transceiver module 21 (LB integrated power amplifier module). Only an LB integrated filtering module or an LB discrete filtering module needs to be set, thereby reducing the cost and size of the radio frequency front-end module 20.

[0070] Since the first LNA module 61 and the second LNA module 62 in the first front-end transceiver module 21 are fully utilized in this embodiment, the module utilization rate in the integrated power amplifier module is improved.

[0071] The above takes the LB band as the first band as an example. Of course, when the first band is the MB or HB band, the foregoing LB band can be referred to. In addition, the above B8 can be replaced by the first sub-band of the first band, B26 can be replaced by the second sub-band of the first band, and B28 can be replaced by the third sub-band of the first band, and it is not limited to the above B8, B26, and B28. The above filtering module and duplexer can be correspondingly replaced with corresponding names.

[0072] The radio frequency system 100 provided by the present application includes a first front-end transceiver module 21, a first antenna 31, a second antenna 32, and a first receiving module 22. The first front-end transceiver module 21 includes at least one first PA module 51, a first LNA module 61, a second LNA module 62, and a first antenna switch 41. The first PA module 51 is used to amplify the radio frequency signal in the first frequency band for transmission. Both the first LNA module 61 and the second LNA module 62 are used to receive the radio frequency signal in the first frequency band. One selection terminal on the front-end side of the first antenna switch 41 is selectively electrically connected to one or more of the first PA module 51, the first LNA module 61, and the second LNA module 62. The first antenna 31 is electrically connected to one selection terminal on the rear-end side of the first antenna switch 41. The second antenna 32 is electrically connected to the other selection terminal on the rear-end side of the first antenna switch 41. The first receiving module 22 includes at least one first filtering module 71, and the first filtering module 71 is used to filter the first frequency band. One end of the first receiving module 22 is electrically connected to the other selection terminal on the front-end side of the first antenna switch 41, and the other end of the first receiving module 22 is electrically connected to the first LNA module 61 and / or the second LNA module 62. The first antenna 31 and the second antenna 32 can be selectively conducted with the first LNA module 61 and the second LNA module 62 through the first antenna switch 41, or can be selectively conducted with the first LNA module 61 and the second LNA module 62 through the first antenna switch 41 and the first receiving module 22. In this way, the first antenna 31 and the second antenna 32 can make full use of the LNA module in the first front-end transceiver module 21, improving the module utilization rate in the integrated power amplifier module.

[0073] Further optionally, please refer to Figure 5 , the first front-end transceiver module 21 further includes a second switch unit 82.

[0074] Please refer to Figure 5 , the front-end side of the second switch unit 82 is electrically connected to the first PA module 51. The second switch unit 82 is the switch unit on the rear-end side of the aforementioned first PA module 51. The rear-end side of the second switch unit 82 includes a plurality of selection terminals, and the plurality of selection terminals are respectively electrically connected to a plurality of different duplexers to realize transmission in different frequency bands.

[0075] For example, the plurality of selection terminals on the rear-end side of the second switch unit 82 are respectively electrically connected to the transmission input terminals of the aforementioned B8 duplexer, the B26 duplexer, and the B28 duplexer.

[0076] The first front-end transceiver module 21 further includes a plurality of duplexers. One end of the front-end side of each duplexer is electrically connected to one selection end of the rear-end side of the second switch unit 82 to electrically connect to the first PA module 51. The other end of the front-end side of each duplexer is electrically connected to the first LNA module 61 or the second LNA module 62. The present application does not specifically limit the number of duplexers. Different duplexers are located on the transmitting and receiving paths to support the transceiver of multiple different frequency bands.

[0077] Further optionally, please refer to Figure 5 , the first front-end transceiver module 21 further includes a third switch unit 83. The rear-end side of each duplexer is electrically connected to one selection end of the front-end side of the third switch unit 83. A plurality of selection ends of the front-end side of the third switch unit 83 are respectively selectively electrically connected to a plurality of duplexers, thereby realizing the switching of the transmitting or receiving paths of different frequency bands. The rear-end side of the third switch unit 83 is electrically connected to the first selection end of the front-end side of the first antenna switch 41. Further optionally, the rear-end side of the third switch unit 83 is electrically connected to the first selection end of the front-end side of the first antenna switch 41. Optionally, the third switch unit 83 can also be the switch unit on the rear-end side of a plurality of duplexers.

[0078] In this embodiment, please refer to Figure 5 , the plurality of duplexers include a first duplexer 91, a second duplexer 92, and a third duplexer 93.

[0079] Please refer to Figure 5 , one end of the front-end side of the first duplexer 91 is electrically connected to one selection end of the rear-end side of the second switch unit 82. The other end of the front-end side of the first duplexer 91 is electrically connected to the first LNA module 61 or the second LNA module 62. The rear-end side of the first duplexer 91 is electrically connected to the first selection end of the front-end side of the third switch unit 83. The operating frequency band of the first duplexer 91 includes the first sub-band of the first frequency band; and / or,

[0080] Please refer to Figure 5 , one end of the front-end side of the second duplexer 92 is electrically connected to one selection end of the rear-end side of the second switch unit 82. The other end of the front-end side of the second duplexer 92 is electrically connected to the first LNA module 61 or the second LNA module 62. The rear-end side of the second duplexer 92 is electrically connected to the second selection end of the front-end side of the third switch unit 83. The operating frequency band of the second duplexer 92 includes the second sub-band of the first frequency band; and / or,

[0081] Please refer to Figure 5, one end of the front end side of the third duplexer 93 is electrically connected to one selection end of the rear end side of the second switch unit 82. The other end of the front end side of the third duplexer 93 is electrically connected to the first LNA module 61 or the second LNA module 62. The rear end side of the third duplexer 93 is electrically connected to the third selection end of the front end side of the third switch unit 83. The operating frequency band of the third duplexer 93 includes the third sub-band of the first frequency band.

[0082] The front end side of the third switch unit 83 includes a first selection end, a second selection end, and a third selection end. The first selection end, the second selection end, and the third selection end of the front end side of the third switch unit 83 are respectively electrically connected to the combining end of the first duplexer 91, the combining end of the second duplexer 92, and the combining end of the third duplexer 93.

[0083] Further optionally, please refer to Figure 5 , the first front-end transceiver module 21 further includes a fourth switch unit 84.

[0084] The front end side of the fourth switch unit 84 is electrically connected to the first LNA module 61. The fourth switch unit 84 is the switch unit at the rear end side of the first LNA module 61. The multiple selection ends of the rear end side of the fourth switch unit 84 are respectively electrically connected to the other end of the front end side of the first duplexer 91 and the other end of the front end side of the second duplexer 92, so as to facilitate the radio frequency system 100 to receive the first sub-band of the first frequency band, or the radio frequency system 100 to receive the second sub-band of the first frequency band.

[0085] Please refer to Figure 5 , the first front-end transceiver module 21 further includes a fifth switch unit 85.

[0086] The front end side of the fifth switch unit 85 is electrically connected to the second LNA module 62. The fifth switch unit 85 is the switch unit at the rear end side of the second LNA module 62. The multiple selection ends of the rear end side of the fifth switch unit 85 are respectively electrically connected to the other end of the front end side of the third duplexer 93, so as to facilitate the radio frequency system 100 to receive the third sub-band of the first frequency band.

[0087] Please refer to Figure 5 , the first PA module 51 forms a transmission path for the first sub-band of the first frequency band through the second switch unit 82, the first duplexer 91, the third switch unit 83, the first antenna switch 41, and the first antenna 31 / second antenna 32.

[0088] Please refer to Figure 5 , the first PA module 51 forms a transmission path for the first sub-band of the first frequency band through the second switch unit 82, the second duplexer 92, the third switch unit 83, the first antenna switch 41, and the first antenna 31 / second antenna 32.

[0089] Please refer to Figure 5 , the first PA module 51 forms a transmission path for the first sub-band of the first frequency band through the second switch unit 82, the third duplexer 93, the third switch unit 83, the first antenna switch 41, and the first antenna 31 / second antenna 32.

[0090] Please refer to Figure 5 , the first antenna 31 / second antenna 32, the first antenna switch 41, the third switch unit 83, the first duplexer 91, the fourth switch unit 84, and the first LNA module 61 to form the first receiving path for the first sub-band of the first frequency band.

[0091] Please refer to Figure 5 , the first antenna 31 / second antenna 32, the first antenna switch 41, the third switch unit 83, the second duplexer 92, the fourth switch unit 84, and the first LNA module 61 to form the first receiving path for the second sub-band of the first frequency band.

[0092] Please refer to Figure 5 , the first antenna 31 / second antenna 32, the first antenna switch 41, the third switch unit 83, the third duplexer 93, the fifth switch unit 85, and the second LNA module 62 to form the first receiving path for the third sub-band of the first frequency band.

[0093] As described above, in this embodiment, the sub-bands of the first frequency band in which the radio frequency system 100 operates include the B8, B26, and B28 frequency bands as an example.

[0094] The first duplexer 91 is a duplexer for B8. The second duplexer 92 is a duplexer for B26. The third duplexer 93 is a duplexer for B28. The above can form a transceiver path for B8, a transceiver path for B26, and a transceiver path for B28.

[0095] Optionally, please refer to Figure 5 , the number of the first filtering modules 71 is multiple. The first receiving module 22 includes a first switch unit 81. The rear end side of the first switch unit 81 is electrically connected to another selection end of the front end side of the first antenna switch 41. As described above, the rear end side of the first switch unit 81 is electrically connected to the second selection end of the front end side of the first antenna switch 41.

[0096] The multiple selection ends of the front end side of the first switch unit 81 are respectively electrically connected to the multiple first filtering modules 71.

[0097] For example, the number of the first filtering modules 71 is three. The multiple selection terminals on the front end side of the first switching unit 81 include a first selection terminal, a second selection terminal, and a third selection terminal. The first selection terminal, the second selection terminal, and the third selection terminal on the front end side of the first switching unit 81 are respectively electrically connected to the three first filtering modules 71. Of course, in other embodiments, the number of the first filtering modules 71 may also be two, four, five, or the like.

[0098] Optionally, please refer to Figure 5 , the multiple first filtering modules 71 include a first sub-filtering module 711, a second sub-filtering module 712, and a third sub-filtering module 713.

[0099] The first sub-filtering module 711 includes, but is not limited to, a filter. The first sub-filtering module 711, the second sub-filtering module 712, and the third sub-filtering module 713 are respectively filters for the first sub-band, the second sub-band, and the third sub-band of the first frequency band. One end of the first sub-filtering module 711 is electrically connected to the first selection terminal on the front end side of the first switching unit 81. The other end of the first sub-filtering module 711 is electrically connected to the first LNA module 61 or the second LNA module 62. Specifically, the other end of the first sub-filtering module 711 is electrically connected to the front end side of the fifth switching unit 85 and is electrically connected to the second LNA module 62 through the front end side of the fifth switching unit 85. The first sub-filtering module 711 is used to filter the first sub-band of the first frequency band to form a second receiving path for the first sub-band of the first frequency band; and / or,

[0100] One end of the second sub-filtering module 712 is electrically connected to the second selection terminal on the front end side of the first switching unit 81. The other end of the second sub-filtering module 712 is electrically connected to the first LNA module 61 or the second LNA module 62. Specifically, the other end of the second sub-filtering module 712 is electrically connected to the front end side of the fifth switching unit 85 and is electrically connected to the second LNA module 62 through the front end side of the fifth switching unit 85. The second sub-filtering module 712 is used to filter the second sub-band of the first frequency band to form a second receiving path for the second sub-band of the first frequency band; and / or,

[0101] One end of the third sub-filtering module 713 is electrically connected to the third selection end on the front end side of the first switch unit 81. The other end of the third sub-filtering module 713 is electrically connected to the first LNA module 61 or the second LNA module 62. Specifically, the other end of the third sub-filtering module 713 is electrically connected to the front end side of the fourth switch unit 84 and is electrically connected to the first LNA module 61 through the front end side of the fourth switch unit 84. The third sub-filtering module 713 is used to filter the third sub-band of the first frequency band to form a second receiving path for the third sub-band of the first frequency band. The first frequency band includes the LB band.

[0102] As described above, in this embodiment, the sub-bands of the first frequency band in which the radio frequency system 100 operates include the B8, B26, and B28 bands as an example.

[0103] The first sub-filtering module 711 can be a B8 filter. The second sub-filtering module 712 can be a B26 filter. The third sub-filtering module 713 can be a B28 filter.

[0104] The first antenna 31 / second antenna 32, the first antenna switch 41, the first switch unit 81, the B8 filter, the fifth switch unit 85, and the second LNA module 62 are used to form a second receiving path for the B8 band.

[0105] The first antenna 31 / second antenna 32, the first antenna switch 41, the first switch unit 81, the B26 filter, the fifth switch unit 85, and the second LNA module 62 are used to form a second receiving path for the B26 band.

[0106] The first antenna 31 / second antenna 32, the first antenna switch 41, the first switch unit 81, the B28 filter, the fourth switch unit 84, and the first LNA module 61 are used to form a second receiving path for the B28 band.

[0107] It should be noted that Figure 5 the dotted lines connecting the first sub-filtering module 711, the second sub-filtering module 712, and the third sub-filtering module 713 to the first LNA module 61 and the second LNA module 62 can also be other connection methods. For example, the first sub-filtering module 711 is connected to the fourth switch unit 84, and the third sub-filtering module 713 is connected to the fifth switch unit 85, and so on.

[0108] Optionally, please refer to Figure 6 , the radio frequency system 100 further includes a second front-end transceiver module 23. The second front-end transceiver module 23 is an integrated power amplifier module. The second front-end transceiver module 23 integrates a power amplifier module (i.e., a PA module), a low-noise amplifier module (i.e., an LNA module), and a second antenna switch 42. The second front-end transceiver module 23 includes but is not limited to an integrated chip.

[0109] Please refer to Figure 6 . The second front-end transceiver module 23 includes at least one second PA module 52, a third LNA module 63, a fourth LNA module 64, a fifth LNA module 65, a second antenna switch 42, a third antenna 33, and a fourth antenna 34.

[0110] The second PA module 52 is used to amplify the transmission signal in the second frequency band.

[0111] Optionally, the second PA module 52 is used to amplify the radio frequency signal in the second frequency band. The second frequency band includes, but is not limited to, the LB band (low frequency band, such as 0.6 - 1 GHz), the MB band (medium frequency band, such as 1.7 - 2.2 GHz), the HB band (high frequency band, such as 2.3 - 2.7 GHz), the UHB band (ultra-high frequency band, such as 3.3 - 3.8 GHz), the Wi-Fi band (such as 2.4 GHz, 5.1 - 5.8 GHz). In this embodiment, the second frequency band is taken as the MB band as an example. The second frequency band includes multiple intermediate frequency sub-bands. For example, the intermediate frequency sub-bands of the second frequency band include at least one of the B1, B3, B34, and B39 bands.

[0112] The second PA module 52 is a power amplification module for amplifying the MB band. That is, the second PA module 52 is an MB PA module. Further, the second PA module 52 is a 3G / 4G / 5G PA module.

[0113] Specifically, the second PA module 52 includes, but is not limited to, a power amplifier.

[0114] Optionally, the rear end side of the second PA module 52 is electrically connected to a switch unit (corresponding to the subsequent seventh switch unit), and the rear end side of the switch unit has multiple ports. For example, the rear end side of the switch unit of the second PA module 52 has multiple ports.

[0115] Of course, in other embodiments, the second front-end transceiver module 23 may further include a 2G MB PA module, or a 2G HB PA module, etc.

[0116] The third LNA module 63, the fourth LNA module 64, and the fifth LNA module 65 are all used to amplify the received signal in the second frequency band.

[0117] Take the second frequency band as the example of the MB frequency band. The third LNA module 63 includes an MB LNA module. The third LNA module 63 includes, but is not limited to, a low-noise amplifier. The fourth LNA module 64 includes an MB LNA module. The fourth LNA module 64 includes, but is not limited to, a low-noise amplifier. The fifth LNA module 65 includes an MB LNA module. The fifth LNA module 65 includes, but is not limited to, a low-noise amplifier.

[0118] In this embodiment, take the sub-bands of the second frequency band in which the radio frequency system 100 operates as an example, including B1, B3, B34, and B39 frequency bands.

[0119] Optionally, the third LNA module 63 can be a low-noise amplifier for at least one sub-band of the second frequency band. Optionally, the fourth LNA module 64 can be a low-noise amplifier for at least one sub-band of the second frequency band.

[0120] For example, the third LNA module 63 is a low-noise amplifier for receiving B1 and B3, and the fourth LNA module 64 is a low-noise amplifier for receiving B34 and B39.

[0121] Please refer to Figure 7 , optionally, the rear end side of the third LNA module 63 is electrically connected to a switch unit. The rear end side of the switch unit has multiple ports, and the multiple ports are respectively electrically connected to the duplexer (or filter) of B1 and the duplexer (or filter) of B3. Another port can be a reserved idle port. In other embodiments, the rear end side of the switch unit of the third LNA module 63 has four ports, or five ports, etc.

[0122] Optionally, please refer to Figure 7 , the B1 duplexer and the B3 duplexer can be integrated together. The rear end side of the integrated B1 duplexer and B3 duplexer is combined into one port.

[0123] Optionally, please refer to Figure 7 , the rear end side of the switch unit of the fourth LNA module 64 has multiple ports. For example, the multiple ports are respectively electrically connected to the duplexers (or filters) of B34 and B39. Another port can be a reserved idle port. In other embodiments, the rear end side of the switch unit of the fourth LNA module 64 has four ports, or five ports, etc.

[0124] Optionally, please refer to Figure 7 , the rear end side of the switch unit of the fifth LNA module 65 has multiple ports, and the multiple ports can be reserved idle ports.

[0125] Please refer to Figure 7, one selection terminal on the front end side of the second antenna switch 42 is selectively electrically connected (conducted) to one or more of the second PA module 52, the third LNA module 63, the fourth LNA module 64, and the fifth LNA module 65.

[0126] It should be noted that in this application, the side close to the radio frequency transceiver module 10 is the front end side, and the side close to the antenna is the rear end side.

[0127] Optionally, please refer to Figure 7 , the front end side of the second antenna switch 42 includes a plurality of selection terminals, the plurality of selection terminals are respectively electrically connected to the second PA module 52, the third LNA module 63, the fourth LNA module 64, and the fifth LNA module 65, and the plurality of selection terminals can be selectively conducted to one or more of the second PA module 52, the third LNA module 63, the fourth LNA module 64, and the fifth LNA module 65.

[0128] Further optionally, the second antenna switch 42 can be a switch module or a sub-module integrated by a plurality of switch modules.

[0129] Specifically, please refer to Figure 7 , the first selection terminal on the front end side of the second antenna switch 42 is selectively electrically connected to the second PA module 52, the third LNA module 63, the fourth LNA module 64, and the fifth LNA module 65, so as to realize the switching of the transmission or reception paths of different frequency bands. The second selection terminal on the front end side of the second antenna switch 42 is electrically connected to the second receiving module. The first selection terminal on the rear end side of the second antenna switch 42 is electrically connected to the third antenna 33. The second selection terminal on the rear end side of the second antenna switch 42 is electrically connected to the fourth antenna 34.

[0130] For example, the second antenna switch 42 is a sub-module integrated by a plurality of switch modules. The front end side of the second antenna switch 42 includes a first selection terminal and a second selection terminal. The first selection terminal and the second selection terminal on the front end side of the second antenna switch 42 can selectively conduct the B1 duplexer (or filter), the B3 duplexer (or filter), the B34 filter, and the B39 filter through the ninth switch unit 89.

[0131] The front end sides of the B1 duplexers are respectively electrically connected to the switch units on the rear end sides of the second PA module 52 and the third LNA module 63. It should be noted that the electrical connections described in this application include direct electrical connections and also include indirect electrical connections through switch units or other devices.

[0132] The front end sides of the B3 duplexers are respectively electrically connected to the switch units on the rear end sides of the second PA module 52 and the third LNA module 63.

[0133] The front - end sides of the B34 filter are electrically connected to the switch units on the rear - end sides of the second PA module 52 and the fourth LNA module 64 respectively.

[0134] The front - end sides of the B39 filter are electrically connected to the switch units on the rear - end sides of the second PA module 52 and the fourth LNA module 64 respectively.

[0135] Among them, the switch unit on the rear - end side of the third LNA module 63 has idle ports. The switch unit on the rear - end side of the fourth LNA module 64 has idle ports. The switch unit on the rear - end side of the fifth LNA module 65 has idle ports.

[0136] The third antenna 33 is electrically connected to a selection terminal on the rear - end side of the second antenna switch 42.

[0137] The fourth antenna 34 is electrically connected to another selection terminal on the rear - end side of the second antenna switch 42.

[0138] Please refer to Figure 6 , the radio - frequency system 100 further includes a second receiving module 24, and the second receiving module 24 can be formed by integrating a filter module or electrically connecting a plurality of discrete filter modules.

[0139] Please refer to Figure 7 , the second receiving module 24 includes at least one second filtering module 72. The second filtering module 72 is used to filter the second frequency band.

[0140] The number of the second filtering modules 72 is one or more. In this embodiment, taking the sub - frequency bands of the second frequency band in which the radio - frequency system 100 operates including the B1, B3, B34, and B39 frequency bands as an example, the number of the second filtering modules 72 is multiple. Each second filtering module 72 is used to filter a sub - frequency band of the second frequency band to support the radio - frequency system 100 to receive multiple sub - frequency bands of the second frequency band.

[0141] The second receiving module 24 can be formed by integrating a filter module or electrically connecting a plurality of discrete filter modules.

[0142] One end of the second receiving module 24 is electrically connected to another selection terminal on the front - end side of the second antenna switch 42. As described above, one end of the second receiving module 24 is electrically connected to the second selection terminal on the front - end side of the second antenna switch 42.

[0143] The front end side (the other end) of the second receiving module 24 is electrically connected to the third LNA module 63 and / or the fourth LNA module 64. Further, the front end side of the second receiving module 24 is electrically connected to the switch unit on the back end side of the third LNA module 63 and / or the switch unit (which may be the sixth switch unit) on the back end side of the fourth LNA module 64.

[0144] Taking the number of ports on the back end sides of the third LNA module 63 and the fourth LNA module 64 as 3 for example.

[0145] Optionally, please refer to Figure 7 , the second front-end transceiver module 23 further includes a seventh switch unit 87. The front end side of the seventh switch unit 87 is electrically connected to the second PA module 52.

[0146] Please refer to Figure 7 , the second front-end transceiver module 23 includes a third filtering module 73. The third filtering module 73 is used to filter the second frequency band. One end of the third filtering module 73 is electrically connected to the selection end on the front end side of the second antenna switch 42. The other end of the third filtering module 73 is electrically connected to the selection end on the back end side of the seventh switch unit 87.

[0147] Please refer to Figure 7 , the second front-end transceiver module 23 includes a fourth filtering module 74. The fourth filtering module 74 is used to filter the second frequency band. One end of the fourth filtering module 74 is electrically connected to the selection end on the front end side of the second antenna switch 42. The other end of the fourth filtering module 74 is electrically connected to the third LNA module 63 or the fourth LNA module 64.

[0148] For example, the third filtering module 73 includes but is not limited to a B1 T filter, a B3 T filter, a B34TR filter, a B39TR filter. For example, the fourth filtering module 74 includes but is not limited to a B1R filter, a B3 R filter, a B34TR filter, a B39TR filter.

[0149] Optionally, please refer to Figure 7 , the number of the second filtering modules 72 is multiple. The second receiving module 24 includes a sixth switch unit 86.

[0150] The back end side of the sixth switch unit 86 is electrically connected to another selection end on the front end side of the second antenna switch 42. The multiple selection ends on the front end side of the sixth switch unit 86 are respectively electrically connected to the multiple second filtering modules 72.

[0151] For example, the second filtering module 72 includes a B1 filtering module, a B3 filtering module, a B34 filtering module, and a B39 filtering module.

[0152] For example, the front-end side of the B1 filtering module is electrically connected to the switching unit at the rear-end side of the fourth LNA module 64. The front-end side of the B3 filtering module is electrically connected to the switching unit at the rear-end side of the fifth LNA module 65. The front-end side of the B34 filtering module is electrically connected to the switching unit at the rear-end side of the third LNA module 63.

[0153] Among them, please refer to Figure 7 , the second PA module 52, the B1 duplexer in the third filtering module 73, and the third antenna 33 / fourth antenna 34 form a transmission path for B1. The second PA module 52, the B3 duplexer in the third filtering module 73, and the third antenna 33 / fourth antenna 34 form a transmission path for B3. The second PA module 52, the B34 filter in the third filtering module 73, and the third antenna 33 / fourth antenna 34 form a transmission path for B34. The second PA module 52, the B39 filter, and the third antenna 33 / fourth antenna 34 form a transmission path for B39.

[0154] Among them, please refer to Figure 7 , the third antenna 33 / fourth antenna 34, the B1 duplexer in the fourth filtering module 74, and the third LNA module 63 form the first receiving path for B1. The third antenna 33 / fourth antenna 34, the B1 filtering module in the second filtering module 72, and the fifth LNA module 65 form the second receiving path for B1. The third antenna 33 / fourth antenna 34, the B3 duplexer in the fourth filtering module 74, and the third LNA module 63 form the first receiving path for B3. The third antenna 33 / fourth antenna 34, the B3 filtering module in the second filtering module 72, and the fifth LNA module 65 form the second receiving path for B3. The third antenna 33 / fourth antenna 34, the B34 filter in the fourth filtering module 74, and the fourth LNA module 64 form the first receiving path for B34. The third antenna 33 / fourth antenna 34, the B34 filtering module in the second filtering module 72, and the third LNA module 63 form the second receiving path for B34. The third antenna 33 / fourth antenna 34, the B39 filter in the fourth filtering module 74, and the fourth LNA module 64 form the first receiving path for B39. The third antenna 33 / fourth antenna 34, the B39 filtering module in the second filtering module 72, and the fifth LNA module 65 form the second receiving path for B39.

[0155] It should be noted that the dotted-line connections between the second filtering module 72 and the third LNA module 63, the fifth LNA module 65, and the fourth LNA module 64 can also be other connection methods.

[0156] Optionally, please refer to Figure 7 In the second filtering module 72, the B1 filtering module and the B3 filtering module can be integrated to form a filtering module. The B34 filtering module and the B39 filtering module in the second filtering module 72 can be integrated to form a filtering module. In other embodiments, the B1 filtering module and the B3 filtering module in the second filtering module 72 can be discrete devices. The B34 filtering module and the B39 filtering module in the second filtering module 72 can be discrete devices.

[0157] The above embodiments can achieve 1T2R for the B1 band, 1T2R for the B3 band, 1T2R for the B34 band, and 1T2R for the B39 band, and there is no need to additionally provide an integrated MB or multi-band diversity receiving module integrated with an LNA module and a filtering module outside the second front-end transceiver module 23 (MB integrated power amplifier module). Only an MB integrated filtering module or an MB discrete filtering module needs to be provided, thereby reducing the cost and size of the radio frequency front-end module 20.

[0158] Since the third LNA module 63 and the fourth LNA module 64 in the second front-end transceiver module 23 are fully utilized in this embodiment, the module utilization rate in the integrated power amplifier module is improved.

[0159] The above is an example with the second band being the MB band. Of course, when the second band is the MB or HB band, the foregoing MB band can be referred to. In addition, B1 above can be replaced by the first sub-band of the second band, B3 can be replaced by the second sub-band of the second band, B34 can be replaced by the third sub-band of the second band, and B39 can be replaced by the fourth sub-band of the second band, and it is not limited to B1, B3, B34, and B39 above. The above filtering module and duplexer can be correspondingly replaced with corresponding names.

[0160] The third antenna 33 and the fourth antenna 34 can be selectively conducted to the third LNA module 63 and the fourth LNA module 64 through the second antenna switch 42, or selectively conducted to the third LNA module 63 and the fourth LNA module 64 through the second antenna switch 42 and the second receiving module 24. In this way, the third antenna 33 and the fourth antenna 34 can make full use of the LNA module in the second front-end transceiver module 23, improving the module utilization rate in the integrated power amplifier module.

[0161] Please refer to Figure 7 The multiple second filtering modules 72 include a fourth sub-filtering module 721 and a fifth sub-filtering module 722.

[0162] The rear end side of the fourth sub-filter module 721 is electrically connected to the first selection end of the front end side of the sixth switch unit 86. Two ports on the front end side of the fourth sub-filter module 721 are electrically connected to at least one of the third LNA module 63, the fourth LNA module 64, and the fifth LNA module 65. The fourth sub-filter module 721 is used to filter the first sub-band and the second sub-band of the second frequency band; and / or,

[0163] Two ports on the rear end side of the fifth sub-filter module 722 are respectively electrically connected to the second selection end and the third selection end of the front end side of the sixth switch unit 86. One end on the front end side of the fifth sub-filter module 722 is electrically connected to at least one of the third LNA module 63, the fourth LNA module 64, and the fifth LNA module 65. The fifth sub-filter module 722 is used to filter the third sub-band and the fourth sub-band of the second frequency band. The second frequency band includes the MB frequency band.

[0164] For example, the first sub-band of the second frequency band is the B1 band, and the second sub-band of the second frequency band is the B3 band. The fourth sub-filter module 721 is a combined module of a B1 filter and a B3 filter.

[0165] For example, the third sub-band of the second frequency band is the B34 band, and the fourth sub-band of the second frequency band is the B39 band. The fifth sub-filter module 722 is a combined module of a B34 filter and a B39 filter.

[0166] Further optionally, please refer to Figure 8 , the second front-end transceiver module 23 further includes a third PA module 53, a sixth LNA module 66, and a seventh LNA module 67.

[0167] Optionally, the third PA module 53 is used to amplify the radio frequency signal of the third frequency band for transmission. The third frequency band includes but is not limited to any one of the LB band (low frequency band, such as 0.6 - 1 GHz), the MB band (medium frequency band, such as 1.7 - 2.2 GHz), the HB band (high frequency band, such as 2.3 - 2.7 GHz), the UHB band (ultra-high frequency band, such as 3.3 - 3.8 GHz), and the Wi-Fi band (such as 2.4 GHz, 5.1 - 5.8 GHz). In this embodiment, the third frequency band is taken as an example of the HB band. The third frequency band includes multiple high-frequency sub-bands. For example, the high-frequency sub-bands of the third frequency band include at least one of the B40 and B41 bands. In this embodiment, the front-end transceiver module for intermediate frequency and the front-end transceiver module for high frequency are integrated in one module. In other embodiments, the front-end transceiver module for intermediate frequency and the front-end transceiver module for high frequency can also be two independently packaged modules respectively.

[0168] The sixth LNA module 66 is used to amplify the received signal of the third frequency band.

[0169] The seventh LNA module 67 is used to amplify the received signal of the third frequency band.

[0170] For example, the sixth LNA module 66 is used to amplify the received signal of the third frequency band. The seventh LNA module 67 is used to amplify the received signal of the third frequency band.

[0171] The selection terminal on the front-end side of the second antenna switch 42 is selectively electrically connected to the third PA module 53, or the sixth LNA module 66, or the seventh LNA module 67.

[0172] Furthermore, the second antenna switch 42 can be directly electrically connected to the seventh LNA module 67 through a filter of the third frequency band, or can be indirectly electrically connected to the seventh LNA module 67 through the ninth antenna unit.

[0173] The second antenna switch 42 can be electrically connected to the seventh LNA module 67 through the second filtering module 72.

[0174] Please refer to Figure 8 , the plurality of second filtering modules 72 further includes a sixth sub-filtering module 723 and a seventh sub-filtering module 724.

[0175] One end of the sixth sub-filtering module 723 is electrically connected to the fourth selection terminal on the front-end side of the sixth switch unit 86. The other end of the sixth sub-filtering module 723 is electrically connected to the sixth LNA module 66 or the seventh LNA module 67. The sixth sub-filtering module 723 is used to filter the first sub-band of the third frequency band; and / or,

[0176] One end of the seventh sub-filtering module 724 is electrically connected to the fifth selection terminal on the front-end side of the sixth switch unit 86. The other end of the seventh sub-filtering module 724 is electrically connected to the sixth LNA module 66 or the seventh LNA module 67. The seventh sub-filtering module 724 is used to filter the second sub-band of the third frequency band.

[0177] For example, the sixth sub-filtering module 723 is a B40 filter, and the seventh sub-filtering module 724 is a B41 filter. The B40 filter and the B41 filter can be electrically connected to the sixth LNA module 66; or, the B40 filter and the B41 filter can be electrically connected to the seventh LNA module 67.

[0178] Please refer to Figure 8 , the second front-end transceiver module 23 further includes an eighth switch unit 88. The front-end side of the eighth switch unit 88 is electrically connected to the third PA module 53.

[0179] Please refer toFigure 8 Moreover, the second front-end transceiver module 23 further includes a fifth filtering module 75. The fifth filtering module 75 is configured to filter the third frequency band. One end of the fifth filtering module 75 is electrically connected to the selection end on the front-end side of the second antenna switch 42. The other end of the fifth filtering module 75 is electrically connected to the third PA module 53, or the sixth LNA module 66, or the seventh LNA module 67. The third frequency band includes the HB frequency band.

[0180] For example, the fifth filtering module 75 includes a B40 TR filter, a B41 TR filter, etc. The number of B41 TR filters can be multiple. Among them, one B41 TR filter is electrically connected to the second antenna switch 42 through a ninth switching unit 89, and another B41 TR filter is directly electrically connected to the second antenna switch 42.

[0181] Please refer to Figure 9 Embodiment 3 of the present application provides a radio frequency system 100. The radio frequency system 100 includes a low-frequency front-end transceiver module 110, a medium-high-frequency front-end transceiver module 120, a low-frequency receiving module 130, and a medium-high-frequency receiving module 140.

[0182] The low-frequency front-end transceiver module 110 is a low-frequency integrated power amplifier module. The medium-high-frequency front-end transceiver module 120 is a medium-high-frequency integrated power amplifier module. The low-frequency receiving module 130 can be an integrated receiving module or a discrete filtering module. The medium-high-frequency receiving module 140 can be an integrated receiving module or a discrete filtering module.

[0183] The low-frequency front-end transceiver module 110 includes at least one low-frequency transmission path and at least one low-frequency receiving path. The low-frequency transmission path is configured to transmit radio frequency signals in the low-frequency band. The low-frequency receiving path is configured to receive the radio frequency signals in the low-frequency band.

[0184] The low-frequency receiving module 130 is disposed adjacent to the low-frequency front-end transceiver module 110. Further optionally, the low-frequency receiving module 130 is disposed next to the low-frequency front-end transceiver module 110, thereby reducing the wiring length between the low-frequency receiving module 130 and the low-frequency front-end transceiver module 110, and further reducing the low-frequency transmission loss.

[0185] The low-frequency receiving module 130 includes at least one low-frequency receiving path. The low-frequency receiving path is configured to receive the radio frequency signals in the low-frequency band. In this way, the low-frequency receiving module 130 and the low-frequency front-end transceiver module 110 can form at least one transmission path and at least two receiving paths.

[0186] Further optionally, the low-frequency front-end transceiver module 110 may be the aforementioned first front-end transceiver module 21. The low-frequency receiving module 130 may be the aforementioned first receiving module 22. In this embodiment, the low-frequency receiving module 130 and the low-frequency front-end transceiver module 110 are arranged adjacent to each other, which can not only reduce the wiring length between the low-frequency receiving module 130 and the low-frequency front-end transceiver module 110, thereby reducing the low-frequency transmission loss. The low-frequency receiving module 130 is also electrically connected to the LNA module in the low-frequency front-end transceiver module 110 to improve the utilization rate of the LNA in the low-frequency front-end transceiver module 110, save costs and reduce the area of the radio frequency system 100.

[0187] The medium-high frequency front-end transceiver module 120 includes at least one medium-high frequency transmitting path and at least one medium-high frequency receiving path. The medium-high frequency transmitting path is used to transmit radio frequency signals in the medium-high frequency band. The medium-high frequency receiving path is used to receive the radio frequency signals in the medium-high frequency band.

[0188] The medium-high frequency receiving module 140 is arranged adjacent to the medium-high frequency front-end transceiver module 120. Further optionally, the medium-high frequency receiving module 140 is arranged closely adjacent to the medium-high frequency front-end transceiver module 120, thereby reducing the wiring length between the medium-high frequency receiving module 140 and the medium-high frequency front-end transceiver module 120, and further reducing the medium-high frequency transmission loss.

[0189] The medium-high frequency receiving module 140 includes at least one medium-high frequency receiving path. The medium-high frequency receiving path is used to receive the radio frequency signals in the medium-high frequency band. In this way, the medium-high frequency receiving module 140 and the medium-high frequency front-end transceiver module 120 can form at least one transmitting path and at least two receiving paths.

[0190] Further optionally, the medium-high frequency front-end transceiver module 120 may be the aforementioned second front-end transceiver module 23. The medium-high frequency receiving module 140 may be the aforementioned second receiving module 24. In this embodiment, the medium-high frequency receiving module 140 and the medium-high frequency front-end transceiver module 120 are arranged adjacent to each other, which can not only reduce the wiring length between the medium-high frequency receiving module 140 and the medium-high frequency front-end transceiver module 120, thereby reducing the medium-high frequency transmission loss. The medium-high frequency receiving module 140 is also electrically connected to the LNA module in the medium-high frequency front-end transceiver module 120 to improve the utilization rate of the LNA in the medium-high frequency front-end transceiver module 120, save costs and reduce the area of the radio frequency system 100.

[0191] Further optionally, please refer to Figure 10, the radio frequency system 100 further includes at least one first low-frequency antenna 151 (such as the aforementioned first antenna 31 and second antenna 32). The low-frequency front-end transceiver module 110 and the low-frequency receiving module 130 are arranged close to the first low-frequency antenna 151. The transmission trace between the low-frequency front-end transceiver module 110 and the first low-frequency antenna 151 is further shortened, and the transmission trace between the low-frequency receiving module 130 and the first low-frequency antenna 151 is further shortened.

[0192] Further optionally, please refer to Figure 10 , the radio frequency system 100 further includes at least one first medium-high-frequency antenna 152 (such as the aforementioned third antenna 33 and fourth antenna 34). The medium-high-frequency front-end transceiver module 120 and the medium-high-frequency receiving module 140 are arranged close to the first medium-high-frequency antenna 152. The transmission trace between the medium-high-frequency front-end transceiver module 120 and the first medium-high-frequency antenna 152 is further shortened, and the transmission trace between the medium-high-frequency receiving module 140 and the first medium-high-frequency antenna 152 is further shortened.

[0193] Assume that the low-frequency receiving module 130 and the medium-high-frequency receiving module 140 are integrated into an integrated diversity receiving module (LMH LFEM). If the integrated diversity receiving module (LMH LFEM) needs to take into account both the LB band and the MHB band, during chip layout, it is generally placed between the LB integrated power amplifier module (LPAMID) and the MHB integrated power amplifier module (LPAMID). Since there is a certain distance between the LB integrated power amplifier module (LPAMID) and the MHB integrated power amplifier module (LPAMID), the trace between the LB integrated power amplifier module (LPAMID) and the integrated diversity receiving module (LMH LFEM) is usually long, resulting in increased loss, which in turn affects the receiving performance; and the integrated diversity receiving module (LMH LFEM) is relatively far from the LB antenna or the MHB antenna, so the loss on the receiving path of the LB antenna or the MHB antenna is relatively large.

[0194] Because the integrated diversity receiving module (LMH LFEM) is placed in the middle of the LB integrated power amplifier module (LPAMID) and the MHB integrated power amplifier module (LPAMID), the LB trace and the MHB trace in the integrated diversity receiving module (LMH LFEM) may be adjacent, resulting in insufficient isolation between the LB trace and the MHB trace, which may cause interference problems such as the second harmonic of LB affecting MHB RX.

[0195] Moreover, the LB integrated power amplifier module (LPAMID) generally includes multiple switching switches and 2 LNAs, and the LB PRX antenna only occupies one LNA, and there is a redundant LNA that does not participate in the work, which causes waste of one LNA module in the LB integrated power amplifier module (LPAMID).

[0196] In the radio frequency system 100 provided in this embodiment, the low-frequency receiving module 130 (such as an LB integrated filtering module) is arranged adjacent to the low-frequency front-end transceiver module 110 (such as an LB integrated power amplifier module (LPAMID)). This can not only reduce the wiring length between the low-frequency receiving module 130 and the low-frequency front-end transceiver module 110, reduce the line loss of LB, and improve the receiving performance of LB. The low-frequency receiving module 130 is also electrically connected to the LNA module in the low-frequency front-end transceiver module 110 to improve the utilization rate of the LNA in the low-frequency front-end transceiver module 110, save costs and reduce the area of the radio frequency system 100. Among them, the device area can be reduced by about 1 / 3.

[0197] In the radio frequency system 100 provided in this embodiment, the medium-high-frequency receiving module 140 (such as an MHB integrated filtering module) is arranged adjacent to the medium-high-frequency front-end transceiver module 120 (such as an MHB integrated power amplifier module (LPAMID)). This can not only reduce the wiring length between the medium-high-frequency receiving module 140 and the medium-high-frequency front-end transceiver module 120, reduce the line loss of MHB, and improve the receiving performance of MHB. The medium-high-frequency receiving module 140 is also electrically connected to the LNA module in the medium-high-frequency front-end transceiver module 120 to improve the utilization rate of the LNA in the medium-high-frequency front-end transceiver module 120, save costs and reduce the area of the radio frequency system 100. Among them, the device area can be reduced by about 1 / 3.

[0198] Moreover, the low-frequency module and the medium-high-frequency module are arranged at intervals, which can avoid the problem that the LB wiring and the MHB wiring may be adjacent, resulting in insufficient isolation between the LB wiring and the MHB wiring, and causing interference problems such as the second harmonic of LB affecting MHB RX. The wiring of LB and MHB is concentrated in the same area, reducing the probability of insufficient isolation between the LB wiring and the MHB wiring and reducing the interference risk.

[0199] The LB integrated power amplifier module (LPAMID) generally includes multiple switching switches and two LNAs. However, the LB PRX antenna only occupies one LNA, and there is a redundant LNA that does not participate in the operation. At this time, the LB DRX antenna is realized by utilizing the redundant LNA and internal switches in the LB integrated power amplifier module (LPAMID). The peripheral circuit only needs to add an LB integrated filtering module (integrating an SPxT switch unit and a filter) or discrete devices of an SPxT switch unit + a filter, reducing the use of external components, reducing the occupied area of the PCB board, and lowering the cost. By utilizing the redundant LNA and internal switches in the LB integrated power amplifier module (LPAMID) to realize the function of the DRX path, the functions of each module in the LB integrated power amplifier module (LPAMID) are fully utilized, reducing resource waste. Adding a small number of external components to the LB integrated power amplifier module (LPAMID) can realize the LB PRX antenna and two DRX paths, simplifying the circuit structure.

[0200] The LB integrated filtering module is placed close to the LB integrated power amplifier module (LPAMID), which can reduce the wiring length from the LB integrated power amplifier module (LPAMID) to the LB integrated filtering module (integrating an SPxT switch unit and a filter) or discrete devices of an SPxT switch unit + a filter, reduce the line loss of LB, and improve the receiving performance of LB.

[0201] Although the embodiments of the present application have been shown and described above, it can be understood that the above embodiments are exemplary and should not be construed as limiting the present application. Those of ordinary skill in the art can make changes, modifications, substitutions, and variations to the above embodiments within the scope of the present application, and these improvements and refinements are also regarded as the protection scope of the present application.

Claims

1. A radio frequency system, characterized in that, Including: A first front-end transceiver module, including at least one first PA module, a first LNA module, a second LNA module, and a first antenna switch. The first PA module is used to amplify the radio frequency signal of the first frequency band for transmission. Both the first LNA module and the second LNA module are used to amplify the received radio frequency signal of the first frequency band. One selection terminal on the front-end side of the first antenna switch is selectively electrically connected to one or more of the first PA module, the first LNA module, and the second LNA module; A first antenna, which is electrically connected to one selection terminal on the rear-end side of the first antenna switch; A second antenna, which is electrically connected to the other selection terminal on the rear-end side of the first antenna switch; And A first receiving module, the first receiving module including at least one first filtering module, the first filtering module being used to filter the first frequency band. One end of the first receiving module is electrically connected to the other selection terminal on the front-end side of the first antenna switch, and the front-end side of the first receiving module is electrically connected to the first LNA module and / or the second LNA module.

2. The radio frequency system according to claim 1, wherein, The number of the first filtering modules is multiple. The first receiving module includes a first switch unit. The rear-end side of the first switch unit is electrically connected to the other selection terminal on the front-end side of the first antenna switch, and multiple selection terminals on the front-end side of the first switch unit are respectively electrically connected to the multiple first filtering modules.

3. The RF system according to claim 2, wherein The multiple first filtering modules include: A first sub-filtering module, one end of the first sub-filtering module being electrically connected to the first selection terminal on the front-end side of the first switch unit, the other end of the first sub-filtering module being electrically connected to the first LNA module or the second LNA module, and the first sub-filtering module being used to filter the first sub-frequency band of the first frequency band; and / or, A second sub-filtering module, one end of the second sub-filtering module being electrically connected to the second selection terminal on the front-end side of the first switch unit, the other end of the second sub-filtering module being electrically connected to the first LNA module or the second LNA module, and the second sub-filtering module being used to filter the second sub-frequency band of the first frequency band; and / or, A third sub-filtering module, one end of the third sub-filtering module being electrically connected to the third selection terminal on the front-end side of the first switch unit, the other end of the third sub-filtering module being electrically connected to the first LNA module or the second LNA module, and the third sub-filtering module being used to filter the third sub-frequency band of the first frequency band, and the first frequency band includes the LB frequency band.

4. The radio frequency system according to claim 3, wherein, The first front-end transceiver module further includes: A second switch unit, the front-end side of the second switch unit being electrically connected to the first PA module; A third switch unit, the rear-end side of the third switch unit being electrically connected to the other selection terminal on the front-end side of the first antenna switch; A plurality of duplexers, one end of the front-end side of each duplexer is electrically connected to a selected end of the rear-end side of the second switch unit, the other end of the front-end side of each duplexer is electrically connected to the first LNA module or the second LNA module, and the rear-end side of each duplexer is electrically connected to a selected end of the front-end side of the third switch unit.

5. The radio frequency system according to claim 4, wherein The plurality of duplexers include: A first duplexer, one end of the front-end side of the first duplexer is electrically connected to a selected end of the rear-end side of the second switch unit, the other end of the front-end side of the first duplexer is electrically connected to the first LNA module or the second LNA module, the rear-end side of the first duplexer is electrically connected to the first selected end of the front-end side of the third switch unit, and the operating frequency band of the first duplexer includes the first sub-band of the first frequency band; and / or, A second duplexer, one end of the front-end side of the second duplexer is electrically connected to a selected end of the rear-end side of the second switch unit, the other end of the front-end side of the second duplexer is electrically connected to the first LNA module or the second LNA module, the rear-end side of the second duplexer is electrically connected to the second selected end of the front-end side of the third switch unit, and the operating frequency band of the second duplexer includes the second sub-band of the first frequency band; A third duplexer, one end of the front-end side of the third duplexer is electrically connected to a selected end of the rear-end side of the second switch unit, the other end of the front-end side of the third duplexer is electrically connected to the first LNA module or the second LNA module, the rear-end side of the third duplexer is electrically connected to the third selected end of the front-end side of the third switch unit, and the operating frequency band of the third duplexer includes the third sub-band of the first frequency band.

6. The radio frequency system according to claim 5, characterized in that, The first front-end transceiver module further includes: A fourth switch unit, the front-end side of the fourth switch unit is electrically connected to the first LNA module, and multiple selected ends of the rear-end side of the fourth switch unit are respectively electrically connected to the other end of the front-end side of the first duplexer, the other end of the front-end side of the second duplexer, and the other end of the third sub-filter module; A fifth switch unit, the front-end side of the fifth switch unit is electrically connected to the second LNA module, and multiple selected ends of the rear-end side of the fifth switch unit are respectively electrically connected to the other end of the front-end side of the third duplexer, the other end of the first sub-filter module, and the other end of the second sub-filter module.

7. The RF system according to claim 1, characterized in that, The radio frequency system further includes: A second front-end transceiver module, including at least one second PA module, a third LNA module, a fourth LNA module, a fifth LNA module, and a second antenna switch, where the second PA module is used to amplify the transmission signal of the second frequency band, and the third LNA module, the fourth LNA module, and the fifth LNA module are all used to amplify the received signal of the second frequency band; one selected end of the front-end side of the second antenna switch can be selectively electrically connected to one or more of the second PA module, the third LNA module, the fourth LNA module, and the fifth LNA module; A third antenna, the third antenna is electrically connected to one selected end of the rear-end side of the second antenna switch; A fourth antenna, the fourth antenna being electrically connected to another selection end on the rear end side of the second antenna switch; and A second receiving module, the second receiving module including at least one second filtering module, the second filtering module being used for filtering the second frequency band; the rear end side of the second receiving module is electrically connected to another selection end on the front end side of the second antenna switch, and the front end side of the second receiving module is electrically connected to the third LNA module, the fourth LNA module, and the fifth LNA module.

8. The radio frequency system according to claim 7, wherein, The number of the second filtering modules is multiple, the second receiving module includes a sixth switching unit, the rear end side of the sixth switching unit is electrically connected to another selection end on the front end side of the second antenna switch, and multiple selection ends on the front end side of the sixth switching unit are respectively electrically connected to the multiple second filtering modules.

9. The RF system according to claim 8, wherein, The multiple second filtering modules include: A fourth sub-filtering module, the rear end side of the fourth sub-filtering module is electrically connected to a first selection end on the front end side of the sixth switching unit, two ports on the front end side of the fourth sub-filtering module are electrically connected to at least one of the third LNA module, the fourth LNA module, and the fifth LNA module, and the fourth sub-filtering module is used for filtering a first sub-band and a second sub-band of the second frequency band; and / or, A fifth sub-filtering module, two ports on the rear end side of the fifth sub-filtering module are respectively electrically connected to a second selection end and a third selection end on the front end side of the sixth switching unit, one end on the front end side of the fifth sub-filtering module is electrically connected to at least one of the third LNA module, the fourth LNA module, and the fifth LNA module, and the fifth sub-filtering module is used for filtering a third sub-band and a fourth sub-band of the second frequency band, and the second frequency band includes an MB frequency band.

10. The radio frequency system according to claim 8, wherein The second front-end transceiver module further includes: A third PA module, the third PA module being used for amplifying a radio frequency signal of a third frequency band to be transmitted; A sixth LNA module, the sixth LNA module being used for amplifying a received signal of the third frequency band; A seventh LNA module, the seventh LNA module being used for amplifying a received signal of the third frequency band; The selection end on the front end side of the second antenna switch is selectively electrically connected to the third PA module, or the sixth LNA module, or the seventh LNA module.

11. The radio frequency system according to claim 10, characterized in that, The multiple second filtering modules further include: A sixth sub-filtering module, one end of the sixth sub-filtering module is electrically connected to a fourth selection end on the front end side of the sixth switching unit, the other end of the sixth sub-filtering module is electrically connected to the sixth LNA module or the seventh LNA module, and the sixth sub-filtering module is used for filtering a first sub-band of the third frequency band; and / or, A seventh sub-filtering module, one end of the seventh sub-filtering module is electrically connected to a fifth selection end on the front end side of the sixth switching unit, the other end of the seventh sub-filtering module is electrically connected to the sixth LNA module or the seventh LNA module, and the seventh sub-filtering module is used for filtering a second sub-band of the third frequency band.

12. The radio frequency system according to claim 10, wherein The second front-end transceiver module further includes: A seventh switch unit, the front end side of the seventh switch unit being electrically connected to the second PA module; An eighth switch unit, the front end side of the eighth switch unit being electrically connected to the third PA module; A third filtering module, the third filtering module being configured to filter the second frequency band, one end of the third filtering module being electrically connected to the selection end of the front end side of the second antenna switch, and the other end of the third filtering module being electrically connected to the selection end of the rear end side of the seventh switch unit; A fourth filtering module, the fourth filtering module being configured to filter the second frequency band, one end of the fourth filtering module being electrically connected to the selection end of the front end side of the second antenna switch, and the other end of the fourth filtering module being electrically connected to the third LNA module or the fourth LNA module; A fifth filtering module, the fifth filtering module being configured to filter the third frequency band, one end of the fifth filtering module being electrically connected to the selection end of the front end side of the second antenna switch, and the other end of the fifth filtering module being electrically connected to the third PA module, the sixth LNA module or the seventh LNA module, the third frequency band including the HB frequency band; 13. A radio frequency system, characterized in that, Comprising: A low-frequency front-end transceiver module, including at least one low-frequency transmission path and at least one low-frequency reception path, the low-frequency transmission path being configured to transmit radio frequency signals of a low-frequency band, and the low-frequency reception path being configured to receive the radio frequency signals of the low-frequency band; A medium-high-frequency front-end transceiver module, including at least one medium-high-frequency transmission path and at least one medium-high-frequency reception path, the medium-high-frequency transmission path being configured to transmit radio frequency signals of a medium-high-frequency band, and the medium-high-frequency reception path being configured to receive the radio frequency signals of the medium-high-frequency band; A low-frequency reception module, the low-frequency reception module being disposed adjacent to the low-frequency front-end transceiver module, the low-frequency reception module including at least one low-frequency reception path, the low-frequency reception path being configured to receive the radio frequency signals of the low-frequency band; And A medium-high-frequency reception module, the medium-high-frequency reception module being disposed adjacent to the medium-high-frequency front-end transceiver module, the medium-high-frequency reception module including at least one medium-high-frequency reception path, the medium-high-frequency reception path being configured to receive the radio frequency signals of the medium-high-frequency band.

14. The radio frequency system according to claim 13, characterized in that, The radio frequency system further includes at least one first low-frequency antenna, and the low-frequency front-end transceiver module and the low-frequency reception module are disposed close to the first low-frequency antenna; The radio frequency system further includes at least one first medium-high-frequency antenna, and the medium-high-frequency front-end transceiver module and the medium-high-frequency reception module are disposed close to the first medium-high-frequency antenna.

15. An electronic device, characterized in that, The electronic device includes the radio frequency system according to any one of claims 1 to 14.

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