Radio frequency front-end device and communication equipment

Abstract

The invention relates to a radio frequency front-end device and communication equipment, and the radio frequency front-end device integrates a first receiving and transmitting module, a second receiving and transmitting module and a third receiving and transmitting module, and can achieve the multi-band transmission and multi-band receiving of low-frequency signals, medium-high-frequency signals and ultrahigh-frequency signals. Compared with a related technology which needs to realize corresponding functions through a plurality of discrete devices, the occupied area of a circuit board can be greatly reduced, the integration level of the devices is improved, the cost is reduced, and meanwhile, after the devices are integrated, the layout and wiring complexity of a single board can be greatly reduced.

Description

Technical Field

[0001] The present application relates to the field of radio frequency technology, and in particular to a radio frequency front-end device and communication equipment. Background Art

[0002] With the development and progress of radio frequency technology, terminal devices have more and more demands for multi-band communications in various frequency bands and their combinations. However, due to the size constraints of terminal devices, the space of the mainboard PCB has not been greatly increased due to the increase in demand, which will lead to very tight space layout and wiring of the mainboard PCB. Summary of the invention

[0003] The embodiments of the present application provide a radio frequency front-end device and a communication device, which can reduce the complexity of layout and wiring.

[0004] In a first aspect, the present application provides a radio frequency front-end device, which is configured with a plurality of transmission ports for connecting to a radio frequency transceiver, a plurality of receiving output ports, and a plurality of antenna ports for connecting to an antenna, and the radio frequency front-end device includes:

[0005] The first transceiver module, the second transceiver module, and the third transceiver module, each transceiver module is respectively connected to the transmitting port, the receiving output port and the antenna port, and the transmitting port, the receiving output port and the antenna port corresponding to the multiple transceiver modules are different. The first transceiver module is used to support the transmission and reception processing of low-frequency signals, the second transceiver module is used to support the transmission and reception processing of medium and high-frequency signals, and the third transceiver module is used to support the transmission and reception processing of ultra-high-frequency signals.

[0006] A second aspect of the present application provides a communication device, including:

[0007] The RF front-end device as described above;

[0008] A radio frequency transceiver is connected to the radio frequency front-end device.

[0009] A second aspect of the present application provides a communication device, including:

[0010] A communications device as hereinbefore described.

[0011] The above-mentioned RF front-end device and communication equipment, the RF front-end device integrates the first transceiver module, the second transceiver module, and the third transceiver module, and can realize multi-band transmission and multi-band reception of low-frequency signals, medium-high frequency signals, and ultra-high frequency signals. Compared with the related technologies that require multiple discrete devices to realize the corresponding functions, it can greatly reduce the occupied area of ​​the circuit board (about 40mm^2 area), improve the integration of the device, and reduce the cost. At the same time, after the device is integrated, the power supply, MIPI and other wiring can be reduced, greatly reducing the complexity of single board layout and wiring. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0013] Figure 1 This is one of the structural block diagrams of a radio frequency front-end device according to an embodiment;

[0014] Figure 2 One of the partial structural block diagrams of a radio frequency front-end device of an embodiment;

[0015] Figure 3 The second partial structural block diagram of a radio frequency front-end device according to an embodiment;

[0016] Figure 4 One of the partial circuit diagrams of a radio frequency front-end device of an embodiment;

[0017] Figure 5 The third partial structural block diagram of a radio frequency front-end device of an embodiment;

[0018] Figure 6 This is a fourth partial structural block diagram of a radio frequency front-end device according to an embodiment;

[0019] Figure 7 This is a fifth partial structural block diagram of a radio frequency front-end device according to an embodiment;

[0020] Figure 8 This is a sixth partial structural block diagram of a radio frequency front-end device according to an embodiment;

[0021] Fig. 9 The second partial circuit diagram of the radio frequency front-end device of an embodiment;

[0022] Fig.10 FIG7 is a partial structural block diagram of a radio frequency front-end device according to an embodiment;

[0023] Fig.11The eighth partial structural block diagram of a radio frequency front-end device according to an embodiment;

[0024] Fig.12 The ninth partial structural block diagram of a radio frequency front-end device according to an embodiment;

[0025] Fig.13 This is a tenth partial structural block diagram of a radio frequency front-end device according to an embodiment;

[0026] Fig.14 The third partial circuit diagram of a radio frequency front-end device of an embodiment;

[0027] Fig.15 This is a third structural block diagram of a radio frequency front-end device according to an embodiment;

[0028] Fig.16 The eleventh partial structural block diagram of a radio frequency front-end device according to an embodiment;

[0029] Fig.17 One of the circuit diagrams of a radio frequency front-end device of an embodiment;

[0030] Fig.18 The second circuit diagram of the radio frequency front-end device of an embodiment;

[0031] Fig.19 The third circuit diagram of the radio frequency front-end device of an embodiment;

[0032] Fig. 20 One of the circuit diagrams of a communication device according to an embodiment;

[0033] Fig.21 A circuit diagram of a radio frequency receiving device according to an embodiment;

[0034] Fig. 22 This is a second circuit diagram of a communication device according to an embodiment. DETAILED DESCRIPTION

[0035] In order to make the purpose, technical solution and advantages of the present application more clearly understood, the present application is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0036] It is understood that the terms "first", "second", etc. used in this application can be used in this article to describe various elements, but these elements are not limited by these terms. These terms are only used to distinguish the first element from another element, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, the features defined as "first" and "second" can explicitly or implicitly include at least one of the features. In the description of this application, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0037] It should be noted that when an element is referred to as being "disposed on" another element, it may be directly on the other element or there may be an intermediate element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be an intermediate element at the same time.

[0038] The RF front-end device involved in the embodiment of the present application can be applied to a communication device with a wireless communication function, and the communication device can be a handheld device, a vehicle-mounted device, a smart car, a wearable device, a computing device or other processing device connected to a wireless modem, as well as various forms of user equipment (UE) (e.g., a mobile phone), a mobile station (MS), etc. For the convenience of description, the above-mentioned devices are collectively referred to as communication devices.

[0039] like Figure 1 As shown, an embodiment of the present application provides a radio frequency front-end device 10. The radio frequency front-end device 10 can be understood as a power amplifier module with a built-in low noise amplifier (Power Amplifier Modules including Duplexers With LNA, L-PAMid). The radio frequency L-PAMid device can support the transmission and reception processing of low-frequency signals, medium-high frequency signals and ultra-high frequency signals; optionally, it can also support the reception switching control, transmission switching control and switching control between multiple low-frequency signals, and the reception switching control, transmission switching control and switching control between multiple medium-high frequency signals. Therefore, the radio frequency L-PAMid device in the embodiment of the present application can also be referred to as a low-frequency, medium-high frequency, and ultra-high frequency power amplifier module (LMHUB PAMid) with a built-in low noise amplifier.

[0040] The RF front-end device 10 can be understood as a packaging structure, which is configured with multiple transmission ports for connecting to the RF transceiver, multiple reception output ports, and multiple antenna ports for connecting to the antenna. The transmission port, reception output port, and antenna port can be understood as the RF pin terminals of the RF front-end device 10, which are used to connect to internal and external devices ( Figure 1 RFIN is the transmitting port, LNA OUT is the receiving output port, ANT1 is the antenna port, Figure 1 Only the example of each module being connected to a certain number of ports is used for illustration only, and the number of ports connected to each module is not limited. For example, each module may also be connected to only one antenna port.) In one embodiment, the RF front-end device 10 in the embodiment of the present application may include four or more transmitting ports, and may include three or more receiving output ports and antenna ports to respectively support the transceiver functions of low-frequency signals, intermediate-frequency signals, high-frequency signals, and ultra-high-frequency signals. It can be understood that the number of the aforementioned ports can be adjusted according to the actual frequency band requirements.

[0041] In this embodiment, the RF front-end device 10 includes a first transceiver module 100, a second transceiver module 200, and a third transceiver module 300. Each transceiver module is respectively connected to a transmitting port, a receiving output port, and an antenna port, and the transmitting ports, receiving output ports, and antenna ports corresponding to the multiple transceiver modules are different. The first transceiver module 100 is used to support the transmission and reception processing of low-frequency signals, the second transceiver module 200 is used to support the transmission and reception processing of medium and high-frequency signals, and the third transceiver module 300 is used to support the transmission and reception processing of ultra-high-frequency signals.

[0042] The first transceiver module 100 is used to receive a low-frequency signal to be transmitted from the RF transceiver through a transmitting port, and can amplify and filter the low-frequency signal and output it to the antenna port to support the transmission of the low-frequency signal; it is also used to receive a low-frequency signal from the antenna through the antenna port, and amplify and filter the low-frequency signal and output it to the receiving output port to support the reception of the low-frequency signal.

[0043] The second transceiver module 200 is used to receive the medium and high frequency signals to be transmitted from the RF transceiver through the transmitting port, and can amplify and filter the medium and high frequency signals and output them to the antenna port to support the transmission of the medium and high frequency signals; it is also used to receive the medium and high frequency signals from the antenna through the antenna port, and amplify and filter the medium and high frequency signals and output them to the receiving output port to support the reception of the medium and high frequency signals. Among them, the medium and high frequency signals include intermediate frequency signals and / or high frequency signals. When the intermediate and high frequency signals include intermediate frequency signals and high frequency signals, the second transceiver module 200 receives the intermediate frequency signals and high frequency signals through different transmitting ports respectively, and can selectively output the intermediate frequency signals or high frequency signals through the same antenna port, and can also output the intermediate frequency signals and high frequency signals respectively through different antenna ports.

[0044] The third transceiver module 300 is used to receive the UHF signal to be transmitted from the RF transceiver through the transmitting port, and can amplify and filter the UHF signal and output it to the antenna port to support the transmission of the UHF signal; it is also used to receive the UHF signal from the antenna through the antenna port, and amplify and filter the UHF signal and output it to the receiving output port to support the reception of the UHF signal.

[0045] Among them, the low-frequency signal may include a radio frequency signal of a low-frequency band, and may also include radio frequency signals of multiple low-frequency bands, and the radio frequency signal may include at least one of a 4G LTE low-frequency signal and a 5G NR low-frequency signal; similarly, the intermediate frequency signal, the high frequency signal and the ultra-high frequency signal may each include a signal of a corresponding frequency band, and may also include radio frequency signals of multiple corresponding frequency bands, and the radio frequency signal may include at least one of a 4G LTE signal and a 5G NR signal. Among them, the frequency band division of low-frequency signals, intermediate frequency signals, high frequency signals and ultra-high frequency signals can refer to the following table (it should be noted that the frequency band used by 4G is used in the 5G network, and only the identification before the serial number is changed. Therefore, the modules and units applicable to processing 4G frequency band signals in the following examples are also applicable to processing signals of the corresponding frequency bands of 5G).

[0046]

[0047] The RF front-end device 10 provided in this embodiment integrates a first transceiver module 100, a second transceiver module 200, and a third transceiver module 300, and can realize multi-band transmission and multi-band reception of low-frequency signals, medium-high-frequency signals, and ultra-high-frequency signals. Compared with related technologies that require multiple discrete devices to realize corresponding functions, it can greatly reduce the occupied area of ​​the circuit board (reducing the area by approximately 40mm^2), improve the integration of the device, and reduce the cost. At the same time, after the device is integrated, the power supply, MIPI and other routing can be reduced, greatly reducing the complexity of single-board layout and wiring.

[0048] In one embodiment, if Figure 2 As shown, the first transceiver module 100 includes: a low frequency transceiver unit 110 and a low frequency switch unit 120 .

[0049] A low-frequency transceiver unit 110, wherein the transmitting input end and the receiving output end of the low-frequency transceiver unit 110 are respectively connected to the transmitting port and the receiving output port, and the low-frequency transceiver unit 110 is used to amplify and filter the received low-frequency signal; a low-frequency switch unit 120, wherein multiple first ends of the low-frequency switch unit 120 are respectively connected to multiple low-frequency transceiver ends of the low-frequency transceiver unit 110 (the figure illustrates a connection between a first end and a low-frequency transceiver end), and a second end of the low-frequency switch unit 120 is connected to a first low-frequency antenna port (such as the ANT1 port in the figure) among multiple antenna ports, and the low-frequency switch unit 120 is used to select and conduct the connection between the first low-frequency antenna port and any low-frequency transceiver end of the low-frequency transceiver unit 110.

[0050] Among them, the first low-frequency antenna port can be connected to the antenna to support the transmission and reception of low-frequency signals. Multiple low-frequency transmission paths can be formed between the transmission port, the transmission input end of the low-frequency transceiver unit 110, the multiple low-frequency transceiver ends of the low-frequency transceiver unit 110, the low-frequency switch unit 120 and the first low-frequency antenna port, and the multiple low-frequency transmission paths can support the transmission processing of multiple low-frequency signals of different frequency bands; multiple low-frequency reception paths can be formed between the reception output port, the reception output end of the low-frequency transceiver unit 110, the multiple low-frequency transceiver ends of the low-frequency transceiver unit 110 and the first low-frequency antenna port, and the multiple low-frequency reception paths can support the reception processing of multiple low-frequency signals of different frequency bands.

[0051] The low-frequency switch unit 120 is used to select and conduct the connection between the first low-frequency antenna port and any low-frequency transceiver end of the low-frequency transceiver unit 110, so as to select and conduct the low-frequency transmission path and low-frequency receiving path corresponding to any target frequency band; the low-frequency transceiver unit 110 is used to amplify and filter the low-frequency signal to be transmitted on the low-frequency transmission path corresponding to the target frequency band and output it to the first low-frequency antenna port, and is also used to filter and amplify the low-frequency signal received on the low-frequency receiving path corresponding to the target frequency band and output it to the RF transceiver. Through the low-frequency transceiver unit 110 and the low-frequency switch unit 120, the switching control of the transmission and reception of multiple low-frequency signals of different frequency bands can be realized.

[0052] In one embodiment, if Figure 3As shown, the RF front-end device 10 is also configured with a first low-frequency connection port (such as LB DRX in the figure); wherein, the low-frequency switch unit 120 is also connected to the first low-frequency connection port and a second low-frequency antenna port among multiple antenna ports (such as the ANT2 port in the figure), and the low-frequency switch unit 120 is also used to select and conduct the connection between any low-frequency transceiver and any port of the first low-frequency antenna port and the second low-frequency antenna port, and select and conduct the connection between the first low-frequency connection port and another port of the first low-frequency antenna port and the second low-frequency antenna port; wherein, the first low-frequency connection port is used to transmit a low-frequency signal from another port.

[0053] Among them, the second low-frequency antenna port can be connected to the antenna to support the transmission and reception of low-frequency signals. The low-frequency switch unit 120 can choose to conduct the connection between any low-frequency transceiver and any of the first low-frequency antenna port and the second low-frequency antenna port, so that the low-frequency transceiver unit 110 can switchably conduct the connection to the antenna corresponding to the two ports, expanding the flexibility of antenna selection of the low-frequency transceiver unit 110; and choose to conduct the connection between the first low-frequency connection port and the other port of the first low-frequency antenna port and the second low-frequency antenna port, so that the first low-frequency connection port transmits the low-frequency signal from the other port. The first low-frequency connection port can be used to connect to other modules inside the RF front-end device 10 through other ports to transmit low-frequency signals internally, making the setting position of other modules of the RF front-end device 10 more flexible; the first low-frequency connection port can also be connected to other modules outside the RF front-end device 10 to expand the auxiliary receiving function of the RF front-end device 10, while expanding the flexibility of antenna selection of other external modules.

[0054] Optionally, one of the first low-frequency antenna port and the second low-frequency antenna port that is conductively connected to the low-frequency transceiver end of the low-frequency transceiver unit 110 can be used to support the transmission and main set reception of low-frequency signals, and the other port that is conductively connected to the first low-frequency connection port can be used to support the diversity reception of low-frequency signals. Thus, the selective conduction function of the first low-frequency antenna port and the second low-frequency antenna port by the low-frequency switch unit 120 is conducive to selecting an antenna with higher antenna efficiency as the antenna supporting transmission and main set reception, thereby improving the RF performance.

[0055] In one of the embodiments, please refer to Figure 3The low frequency switch unit 120 may include: a first low frequency gating switch 121 and a second low frequency gating switch 122. The first low frequency gating switch 121, a plurality of first ends of the first low frequency gating switch 121 are respectively connected to a plurality of low frequency transceiver ends of the low frequency transceiver unit 110; the second low frequency gating switch 122, a first end of the second low frequency gating switch 122 is connected to a second end of the first low frequency gating switch 121, another first end of the second low frequency gating switch 122 is connected to the first low frequency connection port, and two second ends of the second low frequency gating switch 122 are respectively connected to the first low frequency antenna port and the second low frequency antenna port.

[0056] Through the joint action of the first low-frequency gating switch 121 and the second low-frequency gating switch 122, it is possible to select and conduct the connection between any low-frequency transceiver terminal and any port of the first low-frequency antenna port and the second low-frequency antenna port, and select and conduct the connection between the first low-frequency connection port and the other port of the first low-frequency antenna port and the second low-frequency antenna port. Exemplarily, the first low-frequency gating switch 121 can be a multi-channel selection switch, for example, a SP10T switch ( Figure 4 The second low-frequency gating switch 122 may be a dual-channel selection switch, such as a DPDT switch ( Figure 4 Take this as an example).

[0057] In one embodiment, if Figure 4 As shown ( Figure 4 Only a partial circuit of the RF front-end device 10 is shown, the low-frequency transceiver unit 110 includes: a low-frequency filtering circuit 111, a low-frequency transmitting circuit 112 and a low-frequency receiving circuit 113.

[0058] Among them, the multiple first ends of the low-frequency filter circuit 111 are the multiple transceiver ends of the low-frequency transceiver unit 110, and the low-frequency filter circuit 111 is used for filtering the received low-frequency signal; the input end of the low-frequency transmitting circuit 112 is the transmitting input end of the low-frequency transmitting unit 110, and part of the output ends of the low-frequency transmitting circuit 112 are respectively connected to part of the second end of the low-frequency filter circuit 111, and the low-frequency transmitting circuit 112 is used for power amplification of the low-frequency signal; part of the input ends of the low-frequency receiving circuit 113 are respectively connected to another part of the second end of the low-frequency filter circuit 111, and the output end of the low-frequency receiving circuit 113 is connected to the receiving output port, and the low-frequency receiving circuit 113 is used for low-noise amplification of the low-frequency signal. Through the low-frequency filter circuit 111, the low-frequency transmitting circuit 112 and the low-frequency receiving circuit 113, the low-frequency transceiver unit 110 can realize amplification and filtering of the received low-frequency signal. Optionally, the low-frequency filtering circuit 111 includes multiple duplexers and gating switches (such as SPDT in the figure), the low-frequency transmitting circuit 112 includes a power amplifier and a gating switch (such as 4G LB PA, SP9T, etc. in the figure), and the low-frequency receiving circuit 113 includes a gating switch (such as gating switch DPDT#2, SP4T, SP6T, etc. in the figure) and a low-noise amplifier (such as LNA1, LNA2, etc. in the figure).

[0059] Optionally, please continue to refer to Figure 4 The low frequency transceiver unit 110 may also include: a 2G low frequency transmitting circuit, the input end of the 2G low frequency transmitting circuit is connected to a transmitting port, the output end of the 2G low frequency transmitting circuit is connected to a first end of the low frequency switch unit, and the 2G low frequency transmitting circuit is used to realize power amplification processing of the 2G low frequency signal. The 2G low frequency transmitting circuit includes a power amplifier (such as the 2G LB PA in the figure).

[0060] Optionally, please continue to refer to Figure 4 The RF front-end device 10 is also configured with an auxiliary transmitting port (such as LBTXOUT1 in the figure), an auxiliary receiving input port (such as LNA-AUX1 in the figure) and an auxiliary transceiver port (such as LB-TRX1 in the figure). Another part of the output end of the low-frequency transmitting circuit 112 is correspondingly connected to a part of the first end of the external filtering circuit through the auxiliary transmitting port, and part of the input end of the low-frequency receiving circuit 113 is respectively connected to another part of the first end of the external filtering circuit through the auxiliary receiving input port. The second end of the external filtering circuit is connected to the other first end of the low-frequency switch unit 120 through an auxiliary transceiver port, and the external filtering circuit is used to filter the received low-frequency signal. Therefore, the external filtering function of the RF front-end device 10 is expanded by setting the auxiliary port.

[0061] It is understandable that the first transceiver module 100 may also be equipped with other functional components according to actual needs. For example, please continue to refer to Figure 4 , a related coupling circuit can be set between the first low-frequency gating switch 121 and the second low-frequency gating switch 122 to obtain a coupling signal when the first transceiver module 100 transmits a low-frequency signal, so as to output the coupling signal to the radio frequency transceiver, so that the radio frequency transceiver can measure the forward coupling power and reverse coupling power of the low-frequency signal. The coupling circuit can include a coupler, or a switching switch can be set according to the requirements to switchably connect the output end of the coupler to the coupling output port (such as CPLOUT1 in the figure) and the coupling input port (such as CPLIN1 in the figure).

[0062] In one embodiment, if Figure 5 As shown, the second transceiver module 200 includes: a medium-high frequency transceiver unit 210 and a medium-high frequency switch unit 220 .

[0063] A medium and high frequency transceiver unit 210, wherein the transmitting input end and the receiving output end of the medium and high frequency transceiver unit 210 are respectively connected to the transmitting port and the receiving output port, and the medium and high frequency transceiver unit 210 is used for amplifying and filtering the received medium and high frequency signals; a medium and high frequency switch unit 220, wherein multiple first ends of the medium and high frequency switch unit 220 are respectively connected to multiple medium and high frequency transceiver ends of the medium and high frequency transceiver unit 210 (the figure illustrates a connection between a first end and a medium and high frequency transceiver end), and a second end of the medium and high frequency switch unit 220 is connected to a first medium and high frequency antenna port among multiple antenna ports (such as the ANT3 port in the figure), and the medium and high frequency switch unit 220 is used for selecting and conducting the connection between the first medium and high frequency antenna port and any medium and high frequency transceiver end of the medium and high frequency transceiver unit 210.

[0064] Among them, the first medium and high frequency antenna port can be connected to the antenna to support the transmission and reception of medium and high frequency signals. Multiple medium and high frequency transmission paths can be formed between the transmission port, the transmission input end of the medium and high frequency transceiver unit 210, the multiple medium and high frequency transceiver ends of the medium and high frequency transceiver unit 210, the medium and high frequency switch unit 220 and the first medium and high frequency antenna port, and the multiple medium and high frequency transmission paths can support the transmission processing of medium and high frequency signals in multiple different frequency bands; multiple medium and high frequency receiving paths can be formed between the receiving output port, the receiving output end of the medium and high frequency transceiver unit 210, the multiple medium and high frequency transceiver ends of the medium and high frequency transceiver unit 210 and the first medium and high frequency antenna port, and the multiple medium and high frequency receiving paths can support the reception processing of medium and high frequency signals in multiple different frequency bands.

[0065] The medium and high frequency switch unit 220 is used to select and conduct the connection between the first medium and high frequency antenna port and any medium and high frequency transceiver end of the medium and high frequency transceiver unit 210, so as to select and conduct the medium and high frequency transmission path and medium and high frequency receiving path corresponding to any target frequency band; the medium and high frequency transceiver unit 210 is used to amplify and filter the medium and high frequency signal to be transmitted on the medium and high frequency transmission path corresponding to the target frequency band and output it to the first medium and high frequency antenna port, and is also used to filter and amplify the medium and high frequency signal received on the medium and high frequency receiving path corresponding to the target frequency band and output it to the RF transceiver. Through the medium and high frequency transceiver unit 210 and the medium and high frequency switch unit 220, the switching control of the transmission and reception of medium and high frequency signals in multiple different frequency bands can be realized.

[0066] In one embodiment, if Figure 6 As shown, the second transceiver module 200 also includes: a high-frequency transmitting unit 230, which is respectively connected to the transmitting port and the other first end of the medium-high frequency switch unit 220, and is used to perform power amplification processing on the received high-frequency signal, and the network standard of the high-frequency signal is different from the network standard of the medium-high frequency signal; wherein the medium-high frequency switch unit 220 is also used to select and conduct the connection between the high-frequency transmitting unit 230 and the first medium-high frequency antenna port. Among them, the high-frequency transmitting unit 230 can support the power amplification processing of the high-frequency signal of the 2G standard, and the medium-high frequency transceiver unit 210 can support the transceiver processing of the medium-high frequency signal of the 4G and / or 5G standard, thereby, the second transceiver module 200 can support the transceiver processing of the medium-high frequency signal of multiple different standards.

[0067] It is understandable that the high-frequency transmitting unit 230 can be retained or deleted according to needs. For example, for the domestic Chinese market, GSM (Global System for Mobile Communications, also known as the second-generation mobile communication technology 2G) may be withdrawn from the network starting in 2024. In order to further reduce costs, in some other embodiments, the high-frequency transmitting unit 230 can also be deleted.

[0068] In one embodiment, if Figure 7 As shown, the RF front-end device 10 is also configured with a first medium-high frequency connection port (the TXR2 and TXR3 ports in the figure, Figure 6 The embodiments are given as examples, and it can be understood that Figure 5A first medium and high frequency connection port is set on the basis of the embodiment); wherein the medium and high frequency switch unit 220 is also connected to the first medium and high frequency connection port and the second medium and high frequency antenna port among the multiple antenna ports (such as the ANT4 port in the figure), and the medium and high frequency switch unit 220 is also used to select and conduct the connection between any medium and high frequency transceiver and any port of the first medium and high frequency antenna port and the second medium and high frequency antenna port, and select and conduct the connection between the first medium and high frequency connection port and another port of the first medium and high frequency antenna port and the second medium and high frequency antenna port; wherein the first medium and high frequency connection port is used to transmit the medium and high frequency signal from another port.

[0069] Among them, the second medium and high frequency antenna port can be connected to the antenna to support the transmission and reception of medium and high frequency signals. The medium and high frequency switch unit 220 can choose to conduct the connection between any medium and high frequency transceiver end and any port of the first medium and high frequency antenna port and the second medium and high frequency antenna port, so that the medium and high frequency transceiver unit 210 can switchably conduct the connection to the antenna corresponding to the two ports, expanding the flexibility of antenna selection of the medium and high frequency transceiver unit 210; and choose to conduct the connection between the first medium and high frequency connection port and the other port of the first medium and high frequency antenna port and the second medium and high frequency antenna port, so that the first medium and high frequency connection port transmits the medium and high frequency signal from the other port. The first medium and high frequency connection port can be used to connect with other modules inside the RF front-end device 10 through other ports to transmit medium and high frequency signals internally, making the setting position of other modules of the RF front-end device 10 more flexible; the first medium and high frequency connection port can also be connected to other modules outside the RF front-end device 10 to expand the auxiliary receiving function of the RF front-end device 10, while expanding the flexibility of antenna selection of other external modules.

[0070] Optionally, one of the first medium and high frequency antenna port and the second medium and high frequency antenna port that is conductively connected to the medium and high frequency transceiver end of the medium and high frequency transceiver unit 210 can be used to support the transmission and main set reception of medium and high frequency signals, and the other port that is conductively connected to the first medium and high frequency connection port can be used to support the diversity reception of medium and high frequency signals. Thus, through the selective conduction function of the medium and high frequency switch unit 220 on the first medium and high frequency antenna port and the second medium and high frequency antenna port, it is beneficial to select an antenna with higher antenna efficiency as the antenna supporting transmission and main set reception, thereby improving the RF performance. Optionally, in other embodiments, the first medium and high frequency antenna port and the second medium and high frequency antenna port can also be conductively connected to different medium and high frequency transceiver ends of the medium and high frequency transceiver unit 210, so that one of the first medium and high frequency antenna port and the second medium and high frequency antenna port is used to support the transmission and reception of medium frequency signals, and the other port is used to support the transmission and reception of high frequency signals. Specifically, the switch state of the medium and high frequency switch unit 220 can be adjusted according to actual needs.

[0071] In one of the embodiments, please continue to refer to Figure 7The medium and high frequency switch unit 220 includes: a first medium and high frequency selection switch 221 and a second medium and high frequency selection switch 222 .

[0072] A first medium and high frequency gating switch 221, two first ends of the medium and high frequency RF switch are respectively connected to the first medium and high frequency antenna port and the second medium and high frequency antenna port, and some second ends of the medium and high frequency RF switch are respectively connected to the transceiver end of the medium and high frequency transceiver unit 210; a second medium and high frequency gating switch 222, a first end of the first medium and high frequency gating switch 221 is connected to the other second end of the first medium and high frequency gating switch 221, and multiple second ends of the second medium and high frequency gating switch 222 are respectively connected to multiple first medium and high frequency connection ports.

[0073] Among them, the first medium and high frequency gating switch 221 is used to select and conduct the connection between any medium and high frequency transceiver end and any port of the first medium and high frequency antenna port and the second medium and high frequency antenna port, and select and conduct the connection between the second medium and high frequency gating switch 222 and the other port of the first medium and high frequency antenna port and the second medium and high frequency antenna port; the second medium and high frequency gating switch 222 is used to select and conduct the connection between another port and any first medium and high frequency connection port. The gating function of the medium and high frequency switch unit 220 is realized by the joint action of the first medium and high frequency gating switch 221 and the second medium and high frequency gating switch 222. Exemplarily, the first medium and high frequency gating switch 221 can be a multi-channel selection switch, for example, a DP7T switch; the second medium and high frequency gating switch 222 can be a multi-channel selection switch, for example, an SP3T switch.

[0074] Optionally, the second end of another part of the second medium and high frequency selection switch 222 can also be directly connected to the transmission port to directly input the medium and high frequency signal that does not need to be amplified and filtered. The medium and high frequency signal can be directly transmitted to the antenna port through the second medium and high frequency selection switch 222 and the first medium and high frequency selection switch 221 to save power consumption. For example, the other second end of the second medium and high frequency selection switch 222 can be directly connected to a transmission port that supports the transmission of 2G high frequency signals (such as the 2GHB IN port in the figure).

[0075] In one embodiment, if Figure 8As shown, the RF front-end device 10 is also configured with a first receiving input port that can be connected to the antenna (the number of the first receiving input ports can be one or more, such as MB LNA IN1 in the figure); wherein the medium and high frequency transceiver unit 210 is also connected to the first receiving input port to support the reception and processing of the RF signal input to the first receiving input port; the RF signal includes at least one of the intermediate frequency signal and the high frequency signal. It can be understood that when the number of the first receiving input ports is multiple, each first receiving input port can receive a RF signal of any frequency band. The first receiving input port, the medium and high frequency transceiver unit 210 and the receiving output port can form an additional receiving path of the second transceiver module 200, so that the second transceiver module 200 can support the transmission and multi-channel reception of medium and high frequency signals, and realize the reception and processing of low frequency signals. Optionally, the first receiving input port can be connected to an external filtering module to receive one or more RF signals of different frequency bands after filtering and processing by the external filtering module.

[0076] In one embodiment, if Fig. 9 As shown (only a partial circuit of the RF front-end device 10 is shown in the figure), the medium and high frequency transceiver unit 210 includes: a medium and high frequency filter circuit 211, a medium frequency transmitting circuit 212, a high frequency transmitting circuit 213 and a medium and high frequency receiving circuit 214.

[0077] A medium-high frequency filter circuit 211, wherein the multiple first ends of the medium-high frequency filter circuit 211 are multiple transceiver ends of the medium-high frequency transceiver unit 210, and the medium-high frequency filter circuit 211 is used for filtering the received medium-high frequency signals; the medium-high frequency signals include medium-frequency signals and high-frequency signals; an intermediate-frequency transmitting circuit 212, wherein the input end of the intermediate-frequency transmitting circuit 212 is a transmitting input end of the medium-high frequency transceiver unit 210, and the multiple output ends of the intermediate-frequency transmitting circuit 212 are respectively connected to the corresponding second ends of the medium-high frequency filter circuit 211, and the intermediate-frequency transmitting circuit 212 is used for power amplification processing of the intermediate-frequency signals; a high-frequency transmitting circuit 213, wherein the input end of the high-frequency transmitting circuit 213 is a medium-high frequency transmitting circuit. Another transmitting input end of the high-frequency transceiver unit 210, multiple output ends of the high-frequency transmitting circuit 213 are respectively connected to another part of the second end of the medium-high frequency filtering circuit 211, and the high-frequency transmitting circuit 213 is used to perform power amplification processing on the high-frequency signal; the medium-high frequency receiving circuit 214, part of the input ends of the medium-high frequency receiving circuit 214 are respectively connected to another part of the second end of the medium-high frequency filtering circuit 211, part of the input ends of the medium-high frequency receiving circuit 214 are respectively connected to multiple receiving input ends, and the output end of the medium-high frequency receiving circuit 214 is connected to the receiving output port, and the medium-high frequency receiving circuit 214 is used to perform low-noise amplification processing on the received RF signal. Optionally, as Fig. 9As shown, the intermediate and high frequency filtering circuit 211 includes a plurality of duplexers, the intermediate frequency transmitting circuit 212 and the high frequency transmitting circuit 213 may respectively include a power amplifier and a gating switch (such as 4G MB PA, 4G HB PA, SP5T, SP3T, etc. in the figure), and the intermediate and high frequency receiving circuit 214 includes a gating switch (such as gating switch 6P6T, SP3T#1, etc. in the figure) and a low noise amplifier (such as LNA1, LNA2, etc. in the figure).

[0078] Alternatively, if Fig. 9 As shown, the RF front-end device 10 is also configured with a high-frequency transmission port (such as the HB TXOUT port in the figure), and the other output end of the high-frequency transmission circuit 213 is connected to the high-frequency transmission port. The high-frequency transmission circuit 213 is used to support the transmission of high-frequency signals through the high-frequency transmission port.

[0079] It is understandable that the second transceiver module 200 may also be equipped with other functional components according to actual needs. For example, please continue to refer to Fig. 9 , a related coupling circuit can be set between the first intermediate and high frequency selection switch 221 and the antenna port to obtain a coupling signal when the second transceiver module 200 transmits an intermediate frequency and high frequency signal, so as to output the coupling signal to the radio frequency transceiver, so that the radio frequency transceiver can measure the forward coupling power and reverse coupling power of the intermediate frequency and high frequency signal. The coupling circuit can include a coupler, or a switching switch can be set according to the requirements to switchably connect the output end of the coupler to the coupling output port (such as CPLOUT2 in the figure) and the coupling input port (such as CPLIN2 in the figure).

[0080] In one embodiment, if Fig.10 As shown, the third transceiver module 300 includes: an ultra-high frequency transceiver unit 310 and an ultra-high frequency switch unit 320 .

[0081] An ultra-high frequency transceiver unit 310, wherein the transmitting input terminal and the receiving output terminal of the ultra-high frequency transceiver unit 310 are respectively connected to the transmitting port and the receiving output port, and the ultra-high frequency transceiver unit 310 is used to support the transmission and reception processing of ultra-high frequency signals; an ultra-high frequency switch unit 320, wherein a first terminal of the ultra-high frequency switch unit 320 is connected to the ultra-high frequency transceiver terminal of the ultra-high frequency transceiver unit 310, and multiple second terminals of the ultra-high frequency switch unit 320 are respectively connected to multiple antenna ports (such as ANT5, ANT6 ports, etc., which are only examples in the figure and are not limited thereto), and the ultra-high frequency switch unit 320 is used to select and conduct the connection between any antenna port and the ultra-high frequency transceiver terminal.

[0082] Among them, multiple switchable UHF transmission paths can be formed between the transmitting port, the transmitting input end of the UHF transceiver unit 310, the UHF transceiver end of the UHF transceiver unit 310, the UHF switch unit 320 and multiple antenna ports; multiple switchable UHF receiving paths can be formed between the receiving output port, the receiving output end of the UHF transceiver unit 310, the multiple UHF transceiver ends of the UHF transceiver unit 310 and the first low-frequency antenna port.

[0083] The UHF switch unit 320 is used to select and conduct the connection between any antenna port and the UHF transceiver end, so that the UHF transceiver unit 310 can switchably connect multiple antennas, which is conducive to selecting the antenna with the highest antenna efficiency among the multiple antennas to support the transmission and reception of UHF signals; the UHF transceiver unit 310 is used to amplify and filter the UHF signal to be transmitted and output it to the antenna port connected through the UHF switch unit 320, and is also used to filter and amplify the UHF signal received by the antenna port connected and output it to the RF transceiver. Through the UHF transceiver unit 310 and the UHF switch unit 320, the switching control of transmission and reception, and the switching control of multiple antennas can be realized.

[0084] Optionally, the UHF transceiver unit 310 may also be used to support round-robin transmission at multiple antenna ports through the UHF switch unit 320, so that the third transceiver module 300 supports the round-robin transmission function of the UHF signal.

[0085] In one embodiment, if Fig.11 As shown, the third transceiver module 300 further includes: an ultra-high frequency receiving unit 330 .

[0086] The UHF receiving unit 330 has an input end connected to the other first end of the UHF switch unit 320, and an output end connected to a receiving output port. The UHF receiving unit 330 is used to support reception and processing of UHF signals; wherein the UHF switch unit 320 is also used to select and conduct the connection between the UHF receiving unit 330 and the antenna port, and the antenna port to which the UHF receiving unit 330 is connected is different from the antenna port to which the UHF transceiver unit 310 is connected.

[0087] Among them, another receiving path of the third transceiver module 300 is formed between the receiving output port, the ultra-high frequency receiving unit 330, the ultra-high frequency switch unit 320 and the antenna port. The ultra-high frequency switch unit 320 is used to select and conduct the connection between any antenna port and the ultra-high frequency transceiver end, and select and conduct the connection between the ultra-high frequency receiving unit 330 and the antenna port, so that the third transceiver module 300 can realize transmission and two-way reception, thereby improving the receiving performance of the third transceiver module 300.

[0088] Alternatively, if Fig.12 As shown, there are multiple UHF receiving units 330, and the multiple UHF receiving units 330 are respectively connected to the first ends of some UHF switch units 320; wherein, the UHF switch unit 320 is also used to connect the UHF transceiver end and the multiple UHF receiving units 330 to the multiple antenna ports one by one. Thus, the third transceiver module 300 can realize transmission and multi-channel reception, and further improve the receiving performance of the third transceiver module 300. For example, if the number of UHF receiving units 330 is three, the third transceiver module 300 can support the transmission of UHF signals and 4*4 MIMO reception functions.

[0089] Alternatively, if Fig.13 As shown, the RF front-end device 10 is also configured with a plurality of receiving connection ports, and the plurality of receiving connection ports are respectively connected to the first end of another part of the UHF switch unit 320; wherein the UHF switch unit 320 is also used to respectively connect the plurality of receiving connection ports, the UHF transceiver end, and the UHF receiving unit 330 to the plurality of antenna ports in a one-to-one correspondence; the receiving connection port is used to connect to an external receiving module. As a result, the third transceiver module 300 can be combined with an external receiving module to realize transmission and multi-channel reception, further improving the receiving performance of the system. For example, the number of receiving connection ports is two and they are respectively connected to two external receiving modules. The UHF receiving unit 330 and the UHF transceiver unit 310 are combined with two external receiving modules, so that the system can support the transmission of UHF signals and 4*4 MIMO receiving functions.

[0090] Optionally, please continue to refer to Fig.14 The above-mentioned ultra-high frequency transceiver unit 310 may include a power amplifier and a selection switch (such as the power amplifier 5G UHB PA, the selection switch SPDT#1 and the filter Filter, the coupler Coupler, etc. in the figure), each ultra-high frequency receiving unit 330 may include a low noise amplifier and a filter (such as the low noise amplifier LNA9, the filter Filter1, etc.), and the ultra-high frequency switch unit 320 may be a multi-channel selection switch, such as 4P4T.

[0091] It is understandable that the third transceiver module 300 may also be equipped with other functional components according to actual needs. For example, please continue to refer to Fig.14, a related coupling circuit can be set between the UHF switch unit 320 and the UHF transceiver unit 310 to obtain a coupling signal when the third transceiver module 300 transmits an UHF signal, so as to output the coupling signal to the RF transceiver for the RF transceiver to measure the forward coupling power and reverse coupling power of the UHF signal. The coupling circuit can include a coupler, or a switching switch can be set according to the requirements to switchably connect the output end of the coupler to the coupling output port (such as CPLOUT3 in the figure) and the coupling input port (such as CPLIN3 in the figure).

[0092] In one embodiment, if Fig.15 As shown, the RF front-end device 10 is also configured with a first low-frequency connection port, a first medium-high frequency connection port, a second low-frequency connection port and a second medium-high frequency connection port. The first transceiver module 100 is respectively connected to the two antenna ports and the first low-frequency connection port. The first transceiver module 100 is also used to connect the first low-frequency connection port to one of the two antenna ports to transmit the low-frequency signal from the antenna port; the second transceiver module 200 is respectively connected to the other two antenna ports and the first medium-high frequency connection port. The second transceiver module 200 is also used to connect the first medium-high frequency connection port to one of the two antenna ports to transmit the medium-high frequency signal from the antenna port. Among them, the relevant definitions of the first low-frequency connection port and the first medium-high frequency connection port please refer to the relevant definitions in the above embodiment, which will not be repeated here.

[0093] In this embodiment, Fig.15 As shown, the RF front-end device 10 also includes: a receiving module 400, which is respectively connected to multiple receiving output ports (only one of which is an example in the figure), a second low-frequency connection port (such as the LB ANT port in the figure) and a second medium and high frequency connection port (such as the MHB ANT port in the figure), and is used to be connected to the first low-frequency connection port and the first medium and high frequency connection port respectively through the second low-frequency connection port and the second medium and high frequency connection port to support the reception and processing of RF signals from the first low-frequency connection port and the first medium and high frequency connection port.

[0094] Among them, a receiving path for low-frequency signals can be formed between the antenna port, the first transceiver module 100, and the receiving output port, and another receiving path for low-frequency signals can be formed between the first low-frequency connection port, the second low-frequency connection port, the receiving module 400, and the receiving output port. Therefore, based on the first transceiver module 100 and the receiving module 400, the RF front-end device 10 can at least support the transmission and two-way reception of low-frequency signals. Similarly, a receiving path for medium-high frequency signals can be formed between the antenna port, the second transceiver module 200, and the receiving output port, and another receiving path for medium-high frequency signals can be formed between the first medium-high frequency connection port, the second medium-high frequency connection port, the receiving module 400, and the receiving output port. Therefore, based on the first transceiver module 100, the second transceiver module 200, and the receiving module 400, the RF front-end device 10 can at least support the transmission and two-way reception processing of low-frequency signals, the transmission and two-way reception processing of medium-frequency signals, and the transmission and two-way reception processing of high-frequency signals. Therefore, the reception performance of low-frequency signals and medium-high frequency signals of the RF front-end device 10 can be improved.

[0095] In one embodiment, if Fig.15 As shown, the RF front-end device 10 is also configured with a second receiving input port (such as the LNA AUX HB4 port in the figure) that can be connected to an antenna; the receiving module 400 is also connected to the second receiving input port, and the receiving module 400 is also used to support the reception and processing of the RF signal from the second receiving input port; the RF signal includes at least one of a low frequency signal, an intermediate frequency signal, and a high frequency signal.

[0096] Among them, a receiving path for RF signals can be formed between the second receiving input port, the receiving module 400, and the receiving output port. For example, when there are multiple second receiving input ports, a receiving path for low-frequency signals, a receiving path for intermediate-frequency signals, and a receiving path for high-frequency signals can be formed simultaneously. Therefore, based on the first transceiver module 100, the second transceiver module 200, and the receiving module 400, the RF front-end device 10 in this embodiment can at least support the transmission and three-way reception of low-frequency signals, the transmission and three-way reception of intermediate-frequency signals, and the transmission and three-way reception of high-frequency signals.

[0097] Optionally, please continue to refer to Fig.16 The receiving module 400 may include a gating switch (such as DPDT, SP3T#1, 6P6T, SP6T in the figure), a filtering circuit (such as a duplexer or filter in the figure), and a low noise amplifier (such as LNA9 in the figure), so that the receiving module 400 supports the gating function of the receiving path, the filtering processing function of the RF signal, and the low noise amplification processing function to realize the reception processing of the RF signal.

[0098] Optionally, in combination with the above-mentioned related embodiments in which the RF front-end device 10 is also configured with a first input port, based on the first transceiver module 100, the second transceiver module 200 and the receiving module 400, the RF front-end device 10 can support the transmission and 4*4 MIMO reception of low-frequency signals, support the transmission and 4*4 MIMO reception of intermediate frequency signals, and support the transmission and 4*4 MIMO reception of high-frequency signals.

[0099] Further optionally, based on one or more of the above embodiments, the above-mentioned first transceiver module 100 supports the transmission and main set reception of low-frequency signals; the second transceiver module 200 supports the transmission and main set reception of medium and high frequency signals, and supports the main set MIMO reception of low-frequency signals and medium and high frequency signals; the third transceiver module 300 supports the transmission, main set reception, diversity reception, main set MIMO reception and diversity MIMO reception of ultra-high frequency signals; the receiving module 400 supports diversity and diversity MIMO reception of low-frequency signals and medium and high frequency signals. As a result, the RF front-end device 10 can respectively realize the transmission and 4*4MIMO reception of low-frequency signals, medium and high frequency signals and ultra-high frequency signals, greatly improving the RF communication performance; compared with the corresponding multiple discrete devices supporting the same functions mentioned above, the device integration is further improved to achieve the goal of reducing costs.

[0100] It can be understood that the above embodiments only give some examples, but other functional modules, units, etc. can be added accordingly based on user needs to achieve corresponding functions. For example, based on the downlink carrier aggregation (CA) requirements of multiple different frequency band combinations, the RF front-end device 10 needs to set more receiving paths to receive more frequency band signals. Therefore, the RF front-end device 10 can also be configured with an auxiliary receiving input port and an auxiliary receiving output port to form an auxiliary receiving path to support the reception of more frequency band signals. For example, Fig.16 As shown, an additional N41 receiving path can be formed by adding a filter unit (eg, including filter N41Filter1); another filter unit (eg, including filter N41Filter2), etc.

[0101] It can be understood that one or more of the above embodiments can be combined to obtain different RF front-end devices 10. For example, Figure 17-Figure 19 The RF front-end device 10 shown. Figure 17-Figure 19 The aforementioned RF front-end device 10 shown can realize the transmission of low frequency signals, intermediate frequency signals, high frequency signals and ultra-high frequency signals and 4*4 MIMO reception processing.

[0102] It can be understood that the RF front-end device 10 can also include a control module for controlling the switch units and switch devices involved in each module in the above embodiments; the control module can be a mobile industry processor interface (MIPI)-RF front-end control interface (RF Front End Control Interface, RFFE) control unit or a RF front-end control interface (RF Front End Control Interface, RFFE) control module, which complies with the control protocol of the RFFE bus. When the control module is a MIPI-RFFE control module or an RFFE control module, its RF front-end device 10 is also configured with a clock signal input pin, a unidirectional / bidirectional data signal input or bidirectional pin, a power pin, a reference voltage pin, etc., which is not further limited in this application.

[0103] The embodiment of the present application further provides a communication device, including the RF front-end device 10 of the above embodiment not including the receiving module 400; and the RF transceiver 11, connected to the RF front-end device 10. Based on the RF front-end device 10, the communication device can realize multi-band transmission and multi-band reception processing of low-frequency signals, intermediate-frequency signals, high-frequency signals and ultra-high-frequency signals, greatly reducing the occupied area of ​​the circuit board (reducing the area by about 40mm^2), improving the integration of the device, reducing the cost, and at the same time, it can reduce the routing of power supply, MIPI, etc., greatly reducing the complexity of single board layout and wiring.

[0104] In one embodiment, if Fig. 20 As shown, the communication device also includes: a first antenna, a second antenna, a third antenna and a fourth antenna (ANT1 in the figure corresponds to the first antenna, ANT2 corresponds to the second antenna, ANT5 corresponds to the third antenna, and ANT6 corresponds to the fourth antenna).

[0105] Among them, the first transceiver module 100 is connected to the first antenna and the second antenna through the first low-frequency antenna port and the second low-frequency antenna port respectively, so as to support the transmission and two-way reception of low-frequency signals; the second transceiver module 200 is connected to the first antenna and the second antenna through the first medium-high frequency antenna port and the second medium-high frequency antenna port respectively, so as to support the transmission and two-way reception of medium-high frequency signals; the third transceiver module 300 is connected to the third antenna and the fourth antenna through the first ultra-high frequency antenna port and the second ultra-high frequency antenna port respectively, so as to support the transmission and two-way reception of ultra-high frequency signals. Thus, the communication device can support the transmission and two-way reception of low-frequency signals, intermediate-frequency signals, high-frequency signals and ultra-high-frequency signals respectively.

[0106] In one of the embodiments, please refer to Fig. 20The RF front-end device 10 is also configured with a first low-frequency connection port and a first medium-high frequency connection port. The first transceiver module 100 is also used to connect the first low-frequency connection port to one of the first low-frequency antenna port and the second low-frequency antenna port; the second transceiver module 200 is also used to connect the first medium-high frequency connection port to one of the first medium-high frequency antenna port and the second medium-high frequency antenna port. For the relevant embodiments of the first low-frequency connection port and the first medium-high frequency connection port, please refer to the above embodiments, which will not be repeated here.

[0107] In this embodiment, the antenna group further includes a fifth antenna (such as the ANT4 antenna in the figure) and a radio frequency receiving device 20 .

[0108] The RF receiving device 20 is configured with a low-frequency antenna port, a medium-high frequency antenna port, a receiving input port, and a plurality of receiving output ports connected to the RF transceiver 11. The low-frequency antenna port and the medium-high frequency antenna port of the RF receiving device 20 are respectively connected to the first low-frequency connection port and the first medium-high frequency connection port, and the receiving input port of the RF receiving device 20 can be connected to the fifth antenna. Thus, through the RF receiving device 20, the communication device can at least increase the receiving processing of the medium-frequency signal and the receiving processing of the high-frequency signal. Thus, the receiving performance of the low-frequency signal and the medium-high frequency signal of the communication device can be improved.

[0109] Alternatively, if Fig.21 As shown, the RF receiving device 20 may include a gating switch (such as DPDT, SP3T#1, 6P6T, SP6T in the figure), a filtering circuit (such as a duplexer or filter in the figure), and a low noise amplifier (such as LNA1 in the figure), so that the RF receiving device 20 supports the gating function of the receiving path, the filtering processing function of the RF signal, and the low noise amplification processing function to realize the reception processing of the RF signal.

[0110] Optionally, the RF receiving device 20 can be understood as an LFEM (LNA-RF front-end module, an RF front-end module integrated with a low noise amplifier). Optionally, the RF receiving device 20 can also include a control module for controlling each gating switch inside the device. The relevant introduction of the control module can refer to the relevant description of the control module in the RF front-end device 10, which will not be repeated here.

[0111] In one of the embodiments, please refer to Fig. 20, the antenna group also includes a sixth antenna (such as the ANT3 antenna in the figure); when the RF front-end device 10 is also configured with a first receiving input port for connecting to the sixth antenna, and the second transceiver module 200 is also connected to the first receiving input port to support the reception processing of the RF signal input to the first receiving input port, the third transceiver module 300 is also connected to the fifth antenna through the third UHF antenna port, and connected to the sixth antenna through the fourth UHF antenna port. Thus, the communication device can support the transmission and 4*4 MIMO reception of low-frequency signals, support the transmission and 4*4 MIMO reception of intermediate-frequency signals, and support the transmission and 4*4 MIMO reception of high-frequency signals.

[0112] Further optionally, based on one or more of the above embodiments, the first antenna supports the transmission and main set reception of low frequency signals and medium and high frequency signals, the second antenna supports the diversity reception of low frequency signals and medium and high frequency signals, the third antenna supports the transmission and main set reception of ultra-high frequency signals, the fourth antenna supports the diversity reception of ultra-high frequency signals, the fifth antenna supports the diversity MIMO reception of low frequency signals, medium and high frequency signals, and ultra-high frequency signals, and the sixth antenna supports the main set MIMO reception of low frequency signals, medium and high frequency signals, and ultra-high frequency signals. Thus, the communication device can support the transmission of low frequency signals, medium and high frequency signals, and ultra-high frequency signals and the 4*4 MIMO reception of each signal, greatly improving the RF communication performance.

[0113] In one of the embodiments, please refer to Fig. 20 The communication device further includes: a first combining module 30 , a second combining module 40 , a third combining module 50 and a fourth combining module 60 .

[0114] The first combining module 30 is respectively connected to the first low frequency antenna port, the first medium and high frequency antenna port, and the first antenna, and is used for combining the low frequency signal and the medium and high frequency signal; the second combining module 40 is respectively connected to the second low frequency antenna port, the second medium and high frequency antenna port, and the second antenna, and is used for combining the low frequency signal and the medium and high frequency signal; the third combining module 50 is respectively connected to the first receiving input port, the fourth ultra-high frequency antenna port, and the sixth antenna, and is used for combining the low frequency signal, the medium and high frequency signal, and the ultra-high frequency signal; the fourth combining module 60 is respectively connected to the third ultra-high frequency antenna port, the receiving input port of the RF receiving device 20, and the fifth antenna, and is used for combining the low frequency signal, the medium and high frequency signal, and the ultra-high frequency signal.

[0115] Among them, each combining module can be used to combine multiple band signals to support signal transmission and reception. The combining process includes power synthesis of two or more signals and then transmitting them through the antenna, and also includes dividing one carrier signal into multiple signals, so as to transmit them to multiple antenna ports for reception, so as to meet the downlink carrier demand. For example, the first combining module 30 can be used to combine low-frequency signals and medium-high frequency signals so that multiple signals can be transmitted through the first antenna at the same time; it can also be used to filter the carrier signals of the low-frequency signals and medium-high frequency signals received by the first antenna, and then transmit the obtained low-frequency signals and medium-high frequency signals to the corresponding antenna ports respectively. Optionally, each combining module can select a corresponding two-way combiner, three-way combiner, etc. according to the number of ports connected.

[0116] Therefore, through each combining module, the RF front-end device 10 and each antenna, the communication device can realize the combined transmission of multiple signals and also meet the downlink carrier demand.

[0117] It can be understood that the above embodiments only give some examples. However, based on the needs of users, the communication device can also add other functional modules, units, etc. to achieve corresponding functions. For example, based on the downlink carrier aggregation (CA) requirements of multiple different frequency band combinations, the communication device needs to set more receiving paths to receive more frequency band signals. Therefore, the communication device can also include a receiving path external to the RF front-end device 10 to support the reception of more frequency band signals. For example, Fig. 20 As shown, an additional N41 receiving path can be formed by adding a filter circuit (such as filter N41 Filter1 on Path14 in the figure); another filter circuit (filter N41 Filter2 on Path19 in the figure), etc. For example, as shown in the figure, the communication device can also include a first filter circuit 71 and a second filter circuit 72 external to the RF front-end device 10, an external RF receiving device 81 and a RF receiving device 82, etc.; and can also include a third filter circuit 91 and a third filter circuit 92 external to the RF receiving device 20.

[0118] It is understood that, based on the reduction of user demand, the communication device can also reduce the relevant functional modules in the system to reduce the corresponding functions. For example, in order to achieve the ultimate cost reduction goal, GSM is deleted from the existing network. It is understood that one or more of the above embodiments can be combined or split to obtain different communication devices.

[0119] As follows Fig. 20 Taking the communication device shown as an example, taking the N78 UHF signal as an example, the receiving and sending process of the N78 UHF signal is explained:

[0120] N78 UHF signal transmission (TX) process:

[0121] The transmission signal is output from the TX1 5GH port of the RF transceiver 11; after being amplified by the power amplifier 5G HB PA inside the UHF transceiver unit 310 in the third transceiver module 300, it is sent to the SPDT#1 switch; SPDT#1 switches to a single port, and after being filtered by the filter Filter2 inside the UHF transceiver unit 310, it is sent to the 4P4T switch; 4P4T switches to contact 7 and outputs to the SRS1 port; through the Path22 path, it is output to the ANT5 antenna port.

[0122] N78 UHF signal master reception (PRX) process:

[0123] N78 PRX enters from the ANT5 antenna port, passes through the Path22 path, and is input to the SRS1 port of the RF front-end device 10; 4P4T switches to contact 4, is filtered by the filter Filter2 inside the ultra-high frequency transceiver unit 310, and then goes to the SPDT#1 switch; SPDT#1 switches to the RX path, is low-noise amplified by the low-noise amplifier LNA10, and then output to the RX1 port; the received signal enters the RF transceiver 11 through the SDR PRX17 port.

[0124] Diversity reception (DRX) process of N78 UHF signal:

[0125] N78 DRX enters from the ANT6 antenna port, through the Path23 path, to the SRS2 port of the RF front-end device 10; 4P4T switches to contact 2, to the SRS IN1 port; enters from the ANT port of the external RF receiving device 2081; is filtered by the filter Filter inside the RF receiving device 2081, to the low noise amplifier LNA; after being amplified by the low noise amplifier LNA, it is output to the RX port of the RF receiving device 2081; the received signal enters the RF transceiver 11 through the SDR DRX17 port.

[0126] N78 UHF signal primary MIMO reception (PRX MIMO) process:

[0127] N78 PRX MIMO enters from the ANT3 antenna port, passes through the Path10 path, and reaches the third combining module 50; after being branched by the third combining module 50, it passes through the Path21 path and is input to the ANT5 port of the RF front-end device 10; the 4P4T switch is switched to contact 1, and after being filtered by the filter Filter1 inside the ultra-high frequency receiving unit 330, it reaches the low-noise amplifier LNA9 inside the ultra-high frequency receiving unit 330; after being amplified by LNA9, it is output to the RX2 port; the received signal enters the RF transceiver 11 through the SDR PRX15 port.

[0128] Diversity MIMO reception (DRX MIMO) process of N78 signal:

[0129] N78 DRX MIMO enters from the ANT4 antenna port, passes through the Path15 path, and reaches the fourth combiner module 60; passes through the Path24 path, and reaches the ANT1 port of the RF front-end device 10; the 4P4T switch is switched to contact 3, and reaches the SRS IN2 port; enters from the ANT port of the external RF receiving device 20 82; is filtered by the Filter inside the RF receiving device 2082, and reaches the low noise amplifier LNA inside the RF receiving device 20 82; is amplified by the low noise amplifier LNA inside the RF receiving device 2082, and is output to the RX port of the device; the received signal enters the RF transceiver 11 via the SDR DRX15 port.

[0130] The embodiment of the present application also provides another communication device, including the RF front-end device 10 of the embodiment shown in the aforementioned receiving module 400; and the RF transceiver 11, which is connected to the RF front-end device 10. Based on the RF front-end device 10, the communication device can realize multi-band transmission and multi-band reception processing of low-frequency signals, intermediate-frequency signals, high-frequency signals, and ultra-high-frequency signals, greatly reducing the occupied area of ​​the circuit board (reducing the area by about 40mm^2), improving the integration of the device, and reducing the cost. At the same time, it can reduce the routing of power supply, MIPI, etc., and greatly reduce the complexity of single board layout and wiring.

[0131] In one embodiment, if Fig. 22 As shown, the communication device also includes a first antenna, a second antenna, a third antenna, a fourth antenna, a fifth antenna and a sixth antenna (ANT1 in the figure corresponds to the first antenna, ANT2 corresponds to the second antenna, ANT5 corresponds to the third antenna, ANT6 corresponds to the fourth antenna, ANT4 corresponds to the fifth antenna, and ANT3 corresponds to the sixth antenna).

[0132] Among them, the first transceiver module 100 is connected to the first antenna and the second antenna through the first low-frequency antenna port and the second low-frequency antenna port respectively, so as to support the transmission and two-way reception of low-frequency signals; the second transceiver module 200 is used to be connected to the first antenna and the second antenna through the first medium-high frequency antenna port and the second medium-high frequency antenna port respectively, so as to support the transmission and two-way reception of medium-high frequency signals; it is also used to be connected to the third antenna through the first receiving input port to support the reception and processing of radio frequency signals, and the radio frequency signals include at least one of low-frequency signals, medium-frequency signals and high-frequency signals; the third transceiver module 300 is used to be connected to the third antenna and the fourth antenna through the first ultra-high frequency antenna port and the second ultra-high frequency antenna port respectively, connected to the fifth antenna through the third ultra-high frequency antenna port, and connected to the sixth antenna through the fourth ultra-high frequency antenna port, so as to support the transmission and four-way reception of ultra-high frequency signals; the receiving module 400 is used to be connected to the fifth antenna through multiple antenna ports to support the reception and processing of radio frequency signals. Thus, the communication device can realize the transmission and multi-way reception processing of low-frequency signals, medium-frequency signals, high-frequency signals and ultra-high frequency signals.

[0133] In one of the embodiments, please refer to Fig. 22 The communication device further includes a first combining module 30 , a second combining module 40 , a third combining module 50 and a fourth combining module 60 .

[0134] The first combining module 30 is respectively connected to the first low-frequency antenna port, the first medium-high frequency antenna port, and the first antenna, and is used for combining the low-frequency signal and the medium-high frequency signal; the second combining module 40 is respectively connected to the second low-frequency antenna port, the second medium-high frequency antenna port, and the second antenna, and is used for combining the low-frequency signal and the medium-high frequency signal; the third combining module 50 is respectively connected to the first receiving input port, the fourth ultra-high frequency antenna port, and the sixth antenna, and is used for combining the low-frequency signal, the medium-high frequency signal, and the ultra-high frequency signal; the fourth combining module 60 is respectively connected to the third ultra-high frequency antenna port, the second receiving input port, and the fifth antenna, and is used for combining the low-frequency signal, the medium-high frequency signal, and the ultra-high frequency signal.

[0135] Among them, each combining module can be used to combine multiple signals to support signal transmission and reception. The combining process includes power synthesis of two or more signals and then transmitting them through the antenna, and also includes dividing a carrier signal into multiple signals for corresponding transmission to multiple antenna ports for reception to achieve downlink carrier requirements. For example, the first combining module 30 can be used to combine low-frequency signals and medium-high frequency signals so that multiple signals can be transmitted through the first antenna at the same time; it can also be used to filter the carrier signals of the low-frequency signals and medium-high frequency signals received by the first antenna, and then transmit the obtained low-frequency signals and medium-high frequency signals to the corresponding antenna ports respectively. Optionally, each combining module can select a corresponding two-way combiner, three-way combiner, etc. according to the number of ports connected.

[0136] Therefore, through each combining module, the RF front-end device 10 and each antenna, the communication device can realize the combined transmission of multiple signals and also meet the downlink carrier demand.

[0137] In one of the embodiments, please refer to Fig. 22 The first antenna supports the transmission and main set reception of low-frequency signals and medium- and high-frequency signals, the second antenna supports diversity reception of low-frequency signals and medium- and high-frequency signals, the third antenna supports the transmission and main set reception of ultra-high frequency signals, the fourth antenna supports diversity reception of ultra-high frequency signals, the fifth antenna supports diversity MIMO reception of low-frequency signals, medium- and high-frequency signals, and ultra-high-frequency signals, and the sixth antenna supports main set MIMO reception of low-frequency signals, medium- and high-frequency signals, and ultra-high-frequency signals.

[0138] As a result, the communication equipment can support the transmission of low-frequency signals, medium-high-frequency signals and ultra-high-frequency signals and 4*4 MIMO reception of each signal, greatly improving the RF communication performance.

[0139] It can be understood that the above embodiments only give some examples. However, based on the needs of users, the communication device can also add other functional modules, units, etc. to achieve corresponding functions. For example, based on the downlink carrier aggregation (CA) requirements of various frequency band combinations, the RF front-end device 10 needs to set more receiving paths to receive more frequency band signals. Therefore, the RF front-end device 10 can also be configured with an auxiliary receiving input port and an auxiliary receiving output port to form an auxiliary receiving path to support the reception of more frequency band signals. For example, Fig. 22 As shown, a filter circuit (for example, including filter N41 Filter1) and another filter circuit (for example, including filter N41 Filter2) can be added to the RF front-end device 10 to form an additional N41 receiving path. For example, as shown in the figure, the communication device can also include a first filter circuit 71, a second filter circuit 72, a third filter circuit 91, a fourth filter circuit 92, etc., which are external to the RF front-end device 10.

[0140] It is understood that, based on the reduction of user demand, the communication device can also reduce the relevant functional modules in the system to reduce the corresponding functions. For example, in order to achieve the ultimate cost reduction goal, GSM is deleted from the existing network. It is understood that one or more of the above embodiments can be combined or split to obtain different communication devices.

[0141] As follows Fig. 22 Taking the communication device shown as an example, taking the N3 / B3 intermediate frequency signal as an example, the receiving and sending process of the N3 / B3 intermediate frequency signal is described:

[0142] The transmission (TX) process of N3 / B3 / B3 intermediate frequency signal:

[0143] The TX0 MB port of the RF transceiver 11 outputs a transmission signal, which is amplified by the power amplifier MB 4G PA inside the medium and high frequency transceiver unit 210 of the second transceiver module 200 and then reaches the 3P5T switch; the 3P5T switch switches to contact 5, and after filtering, reaches the DP7T switch; the DP7T switch switches to contact 1 and outputs to the ANT3 port; through the Path03 path, reaches the third combining module 50; after combining by the third combining module 50, reaches the ANT1 antenna port through the Path01 path.

[0144] The main set receiving (PRX) process of N3 / B3 IF signal:

[0145] N3 / B3 PRX enters from the ANT1 antenna port, through the Path01 path, and the third combining module 50; through the Path03 path, it is input to the ANT3 port of the RF front-end device 10; the DP7T switch is switched to contact 4, and after filtering, it goes to the SP4T#1 switch; the SP4T#1 switch is switched to the RX path, and after LNA amplification, it goes to the 6P6T switch; the 6P6T switch is switched to contact 2, and is output to the LNA OUT4 port; the received signal enters the RF transceiver 11 through the SDR PRX2 port.

[0146] Diversity reception (DRX) process of N3 / B3 intermediate frequency signal:

[0147] N3 / B3 DRX enters from the ANT2 antenna port, through the Path09 path, to the third combiner module 50; through the Path08 path, to the ANT4 port of the RF front-end device 10; the DP7T switch is switched to contact 9, to the SP3T switch; the SP3T switch is switched to contact 1, to the TRX2 port of the RF front-end device 10; through the Path06 path, to the MHB ANT port of the RF front-end device 10; SP8T switches to contact 5, after filtering, to the SP3T#4 switch; after amplification by the low noise amplifier LNA13, to the 6P6T switch; the 6P6T switch is switched to contact 3, to the LNA OUT MHB3 port output; the received signal enters the RF transceiver 11 through the SDR DRX4 port.

[0148] The main set MIMO reception (PRX MIMO) process of N3 / B3 intermediate frequency signal:

[0149] N3 / B3 PRX MIMO enters from the ANT3 antenna port, passes through the Path10 path, and reaches the third combining module 50; after the third combining module 50 splits, it passes through the Path25 path and reaches the SP3T#1 switch; the SP3T#1 switch switches to contact 2, passes through the Path11 path, and after filtering, it is input to the MB LNA IN1 port of the RF front-end device 10; the SP3T#1 switch switches to a single port, and after LNA amplification, it reaches the 6P6T switch; the 6P6T switch switches to contact 3 and outputs to the LNA OUT3 port; the received signal enters the RF transceiver 11 through the SDR PRX0 port;

[0150] Diversity MIMO reception (DRX MIMO) process of N3 / B3 intermediate frequency signal:

[0151] N3 / B3 DRX MIMO enters from the ANT4 antenna port, passes through the Path15 path, and reaches the fourth combiner module 60; passes through the Path20 path, and reaches the SP3T#1 switch; the SP3T#1 switch switches to contact 2, and passes through the Path16 path to the filter; after filtering, it is input to the LNA AUX HB4 port of the RF front-end device 10; the SP3T#3 switch switches to a single port, and after amplification by the low-noise amplifier LNA11, it reaches the 6P6T switch; the 6P6T switch switches to contact 3, and is output to the LNA OUT MB1 port; the received signal enters the RF transceiver 11 through the SDRDRX0 port.

[0152] The technical features of the above embodiments may be combined arbitrarily. To make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0153] The above embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the present application. It should be pointed out that, for a person of ordinary skill in the art, several modifications and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the protection scope of the present application shall be subject to the attached claims.

Claims

1. A radio frequency front-end device, characterized in that: The RF front-end device is configured with multiple transmission ports for connecting to a RF transceiver, multiple reception output ports, and multiple antenna ports for connecting to an antenna, and the RF front-end device includes: The first transceiver module, the second transceiver module, and the third transceiver module, each transceiver module is respectively connected to the transmitting port, the receiving output port and the antenna port, and the transmitting port, the receiving output port and the antenna port corresponding to the multiple transceiver modules are different. The first transceiver module is used to support the transmission and reception processing of low-frequency signals, the second transceiver module is used to support the transmission and reception processing of medium and high-frequency signals, and the third transceiver module is used to support the transmission and reception processing of ultra-high-frequency signals.

2. The RF front-end device according to claim 1, characterized in that: The second transceiver module includes: A medium and high frequency transceiver unit, wherein the transmitting input end and the receiving output end of the medium and high frequency transceiver unit are respectively connected to the transmitting port and the receiving output port, and the medium and high frequency transceiver unit is used for amplifying and filtering the received medium and high frequency signals; A medium-high frequency switch unit, wherein multiple first ends of the medium-high frequency switch unit are respectively connected to multiple medium-high frequency transceiver ends of the medium-high frequency transceiver unit, a second end of the medium-high frequency switch unit is connected to a first medium-high frequency antenna port among multiple antenna ports, and the medium-high frequency switch unit is used to select and conduct the connection between the first medium-high frequency antenna port and any medium-high frequency transceiver end of the medium-high frequency transceiver unit.

3. The RF front-end device according to claim 2, characterized in that: The second transceiver module also includes: A high-frequency transmitting unit, connected to the transmitting port and the other first end of the medium-high frequency switch unit, respectively, for performing power amplification processing on the received high-frequency signal, wherein the network standard of the high-frequency signal is different from the network standard of the medium-high frequency signal; The medium and high frequency switch unit is further used to select and conduct the connection between the high frequency transmitting unit and the first medium and high frequency antenna port.

4. The RF front-end device according to claim 2, characterized in that: The radio frequency front-end device is also configured with a first medium and high frequency connection port; The medium and high frequency switch unit is also connected to the first medium and high frequency connection port and the second medium and high frequency antenna port among the multiple antenna ports, and the medium and high frequency switch unit is also used to select and conduct the connection between any medium and high frequency transceiver and any port of the first medium and high frequency antenna port and the second medium and high frequency antenna port, and select and conduct the connection between the first medium and high frequency connection port and another port of the first medium and high frequency antenna port and the second medium and high frequency antenna port; The first medium and high frequency connection port is used to transmit the medium and high frequency signal from the other port.

5. The RF front-end device according to claim 4, characterized in that: The medium and high frequency switch unit comprises: A first medium and high frequency gating switch, wherein two first ends of the medium and high frequency RF switch are respectively connected to the first medium and high frequency antenna port and the second medium and high frequency antenna port, and part of the second ends of the medium and high frequency RF switch are respectively connected to the transceiver end of the medium and high frequency transceiver unit; a second medium and high frequency gating switch, wherein a first end of the first medium and high frequency gating switch is connected to another second end of the first medium and high frequency gating switch, and a plurality of second ends of the second medium and high frequency gating switch are respectively connected to a plurality of the first medium and high frequency connection ports; Among them, the first medium and high frequency gating switch is used to select and conduct the connection between any medium and high frequency transceiver end and any port of the first medium and high frequency antenna port and the second medium and high frequency antenna port, and select and conduct the connection between the second medium and high frequency gating switch and the other port of the first medium and high frequency antenna port and the second medium and high frequency antenna port; the second medium and high frequency gating switch is used to select and conduct the connection between the other port and any of the first medium and high frequency connection ports.

6. The RF front-end device according to claim 2, characterized in that: The RF front-end device is also configured with a first receiving input port that can be connected to an antenna; Among them, the medium and high frequency transceiver unit is also connected to the first receiving input port, used to support the reception and processing of the radio frequency signal input to the first receiving input port; the radio frequency signal includes at least one of the low frequency signal, the medium frequency signal, and the high frequency signal.

7. The RF front-end device according to claim 1, characterized in that: The first transceiver module includes: A low-frequency transceiver unit, wherein a transmitting input terminal and a receiving output terminal of the low-frequency transceiver unit are respectively connected to the transmitting port and the receiving output port, and the low-frequency transceiver unit is used to amplify and filter the received low-frequency signal; A low-frequency switch unit, wherein multiple first ends of the low-frequency switch unit are respectively connected to multiple low-frequency transceiver ends of the low-frequency transceiver unit, a second end of the low-frequency switch unit is connected to a first low-frequency antenna port among multiple antenna ports, and the low-frequency switch unit is used to select and conduct the connection between the first low-frequency antenna port and any low-frequency transceiver end of the low-frequency transceiver unit.

8. The RF front-end device according to claim 7, characterized in that: The RF front-end device is also configured with a first low-frequency connection port; The low-frequency switch unit is also connected to the first low-frequency connection port and a second low-frequency antenna port among the multiple antenna ports, and the low-frequency switch unit is also used to select and conduct the connection between any low-frequency transceiver and any port of the first low-frequency antenna port and the second low-frequency antenna port, and select and conduct the connection between the first low-frequency connection port and another port of the first low-frequency antenna port and the second low-frequency antenna port; The first low-frequency connection port is used to transmit the low-frequency signal from the other port.

9. The RF front-end device according to claim 8, characterized in that: The low-frequency switch unit comprises: A first low-frequency gating switch, wherein a plurality of first ends of the first low-frequency gating switch are respectively connected to a plurality of low-frequency transceiver ends of the low-frequency transceiver unit; A second low-frequency gating switch, wherein a first end of the second low-frequency gating switch is connected to the second end of the first low-frequency gating switch, another first end of the second low-frequency gating switch is connected to the first low-frequency connection port, and two second ends of the second low-frequency gating switch are respectively connected to the first low-frequency antenna port and the second low-frequency antenna port.

10. The radio frequency front-end device according to claim 1, characterized in that: The third transceiver module includes: An ultra-high frequency transceiver unit, wherein a transmitting input terminal and a receiving output terminal of the ultra-high frequency transceiver unit are respectively connected to a transmitting port and a receiving output port, and the ultra-high frequency transceiver unit is used to support the transmission and reception processing of the ultra-high frequency signal; An ultra-high frequency switch unit, wherein a first end of the ultra-high frequency switch unit is connected to the ultra-high frequency transceiver end of the ultra-high frequency transceiver unit, and multiple second ends of the ultra-high frequency switch unit are respectively connected to multiple antenna ports, and the ultra-high frequency switch unit is used to select and conduct the connection between any antenna port and the ultra-high frequency transceiver end.

11. The radio frequency front-end device according to claim 10, characterized in that: The third transceiver module also includes: An ultra-high frequency receiving unit, wherein an input end of the ultra-high frequency receiving unit is connected to the other first end of the ultra-high frequency switch unit, an output end of the ultra-high frequency receiving unit is connected to one of the receiving output ports, and the ultra-high frequency receiving unit is used to support receiving and processing of the ultra-high frequency signal; The UHF switch unit is further used for selecting and conducting the connection between the UHF receiving unit and the antenna port, and the antenna port to which the UHF receiving unit is conducted is different from the antenna port to which the UHF transceiver unit is conducted.

12. The radio frequency front-end device according to claim 11, characterized in that: The RF front-end device is further configured with a plurality of receiving connection ports, and the plurality of receiving connection ports are respectively connected to the first ends of another part of the UHF switch unit correspondingly; The UHF switch unit is further used to connect the multiple receiving connection ports, the UHF transceiver, and the UHF receiving unit to the multiple antenna ports in a one-to-one correspondence; The receiving connection port is used to connect to an external receiving module.

13. The RF front-end device according to claim 11, characterized in that: There are multiple UHF receiving units, and the multiple UHF receiving units are respectively connected to part of the first ends of the UHF switch unit correspondingly; The UHF switch unit is further used to connect the UHF transceiver end and the plurality of UHF receiving units to the plurality of antenna ports in a one-to-one correspondence.

14. The radio frequency front-end device according to any one of claims 1 to 13, characterized in that: The RF front-end device is also configured with a first low-frequency connection port, a first medium-high frequency connection port, a second low-frequency connection port and a second medium-high frequency connection port; the first transceiver module is respectively connected to two antenna ports and the first low-frequency connection port; the first transceiver module is further used to connect the first low-frequency connection port to one of the two antenna ports to transmit the low-frequency signal from the antenna port; the second transceiver module is respectively connected to the other two antenna ports and the first medium-high frequency connection port; the second transceiver module is further used to connect the first medium-high frequency connection port to one of the two antenna ports to transmit the medium-high frequency signal from the antenna port; The radio frequency front-end device also includes: The receiving module is respectively connected to the plurality of receiving output ports, the second low-frequency connection port and the second medium and high-frequency connection port, and is used to be respectively connected to the first low-frequency connection port and the first medium and high-frequency connection port through the second low-frequency connection port and the second medium and high-frequency connection port, so as to support receiving and processing of radio frequency signals from the first low-frequency connection port and the first medium and high-frequency connection port.

15. The radio frequency front-end device according to claim 14, characterized in that: The RF front-end device is also configured with a second receiving input port that can be connected to an antenna; the receiving module is also connected to the second receiving input port, and the receiving module is also used to support the reception and processing of the RF signal from the second receiving input port; the RF signal includes at least one of the low-frequency signal, the intermediate-frequency signal, and the high-frequency signal.

16. The radio frequency front-end device according to claim 15, characterized in that: The first transceiver module supports the transmission and main set reception of the low-frequency signal; the second transceiver module supports the transmission and main set reception of the medium and high frequency signals, and supports the main set MIMO reception of the low-frequency signal and the medium and high frequency signals; the third transceiver module supports the transmission, main set reception, diversity reception, main set MIMO reception and diversity MIMO reception of the ultra-high frequency signal; the receiving module supports diversity and diversity MIMO reception of the low-frequency signal and the medium and high frequency signals.

17. A communication device, characterized in that: include: The radio frequency front-end device according to any one of claims 1 to 13; A radio frequency transceiver is connected to the radio frequency front-end device.

18. The communication device according to claim 17, characterized in that Also includes: a first antenna, a second antenna, a third antenna, and a fourth antenna; Among them, the first transceiver module is correspondingly connected to the first antenna and the second antenna through the first low-frequency antenna port and the second low-frequency antenna port respectively, the second transceiver module is correspondingly connected to the first antenna and the second antenna through the first medium-high frequency antenna port and the second medium-high frequency antenna port respectively, and the third transceiver module is correspondingly connected to the third antenna and the fourth antenna through the first ultra-high frequency antenna port and the second ultra-high frequency antenna port respectively.

19. The communication device according to claim 18, characterized in that The RF front-end device is also configured with a first low-frequency connection port and a first medium-high frequency connection port; the first transceiver module is further used to connect the first low-frequency connection port to one of the first low-frequency antenna port and the second low-frequency antenna port; the second transceiver module is further used to connect the first medium-high frequency connection port to one of the first medium-high frequency antenna port and the second medium-high frequency antenna port; the antenna group also includes a fifth antenna; and The RF receiving device is configured with a low-frequency antenna port, a medium-high frequency antenna port, a receiving input port and multiple receiving output ports connected to the RF transceiver. The low-frequency antenna port and the medium-high frequency antenna port of the RF receiving device are respectively connected to the first low-frequency connection port and the first medium-high frequency connection port. The receiving input port of the RF receiving device can be conductively connected to the fifth antenna.

20. The communication device according to claim 19, characterized in that The antenna group also includes a sixth antenna; when the RF front-end device is also configured with a first receiving input port for connecting to the sixth antenna, and the second transceiver module is also connected to the first receiving input port to support reception processing of the RF signal input to the first receiving input port, the third transceiver module is also connected to the fifth antenna through the third UHF antenna port, and is connected to the sixth antenna through the fourth UHF antenna port.

21. The communication device according to claim 20, characterized in that The communication device further comprises: A first combining module is connected to the first low-frequency antenna port, the first medium- and high-frequency antenna port, and the first antenna, respectively, and is used to combine the low-frequency signal and the medium- and high-frequency signal; A second combining module is connected to the second low-frequency antenna port, the second medium-high frequency antenna port, and the second antenna, respectively, and is used to combine the low-frequency signal and the medium-high frequency signal; a third combining module, connected to the first receiving input port, the fourth UHF antenna port, and the sixth antenna, respectively, and configured to combine the low frequency signal, the medium and high frequency signal, and the UHF signal; The fourth combining module is respectively connected to the third UHF antenna port, the receiving input port of the RF receiving device, and the fifth antenna, and is used for combining the low frequency signal, the medium and high frequency signal, and the UHF signal.

22. The communication device according to claim 20 or 21, characterized in that: The first antenna supports the transmission and main set reception of the low frequency signal and the medium and high frequency signals, the second antenna supports the diversity reception of the low frequency signal and the medium and high frequency signals, the third antenna supports the transmission and main set reception of the ultra-high frequency signal, the fourth antenna supports the diversity reception of the ultra-high frequency signal, the fifth antenna supports the diversity MIMO reception of the low frequency signal, the medium and high frequency signal, and the ultra-high frequency signal, and the sixth antenna supports the main set MIMO reception of the low frequency signal, the medium and high frequency signal, and the ultra-high frequency signal.

23. A communication device, characterized in that: include: The radio frequency front-end device according to any one of claims 14 to 16; A radio frequency transceiver is connected to the radio frequency front-end device.

24. The communication device according to claim 23, characterized in that The communication device further includes a first antenna, a second antenna, a third antenna, a fourth antenna, a fifth antenna and a sixth antenna; The first transceiver module is connected to the first antenna and the second antenna through the first low-frequency antenna port and the second low-frequency antenna port respectively, so as to support the transmission and two-way reception of the low-frequency signal; The second transceiver module is used to be connected to the first antenna and the second antenna through the first medium and high frequency antenna port and the second medium and high frequency antenna port respectively, so as to support the transmission and two-way reception of medium and high frequency signals; and is also used to be connected to the third antenna through the first receiving input port to support the reception and processing of radio frequency signals, wherein the radio frequency signal includes at least one of the low frequency signal, the medium frequency signal and the high frequency signal; The third transceiver module is used to connect to the third antenna and the fourth antenna through the first UHF antenna port and the second UHF antenna port respectively, to connect to the fifth antenna through the third UHF antenna port, and to connect to the sixth antenna through the fourth UHF antenna port, so as to support the transmission and four-way reception of the UHF signal; The receiving module is used to connect to the fifth antenna through the plurality of antenna ports to support receiving and processing of the radio frequency signal.

25. The communication device according to claim 24, characterized in that The communication device further comprises: A first combining module is connected to the first low-frequency antenna port, the first medium- and high-frequency antenna port, and the first antenna, respectively, and is used to combine the low-frequency signal and the medium- and high-frequency signal; A second combining module is connected to the second low-frequency antenna port, the second medium-high frequency antenna port, and the second antenna, respectively, and is used to combine the low-frequency signal and the medium-high frequency signal; a third combining module, connected to the first receiving input port, the fourth UHF antenna port, and the sixth antenna, respectively, and configured to combine the low frequency signal, the medium and high frequency signal, and the UHF signal; The fourth combining module is connected to the third UHF antenna port, the second receiving input port, and the fifth antenna respectively, and is used for combining the low frequency signal, the medium and high frequency signal, and the UHF signal.

26. The communication device according to claim 24 or 25, characterized in that: The first antenna supports the transmission and main set reception of the low frequency signal and the medium and high frequency signals, the second antenna supports the diversity reception of the low frequency signal and the medium and high frequency signals, the third antenna supports the transmission and main set reception of the ultra-high frequency signal, the fourth antenna supports the diversity reception of the ultra-high frequency signal, the fifth antenna supports the diversity MIMO reception of the low frequency signal, the medium and high frequency signal, and the ultra-high frequency signal, and the sixth antenna supports the main set MIMO reception of the low frequency signal, the medium and high frequency signal, and the ultra-high frequency signal.

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