Radio Frequency System and Communication Equipment

Abstract

The present application provides a radio frequency system and a communication device. The radio frequency system includes that a first transmitting port is connected to a first transceiver module to form a first transmitting path for supporting the transmission of a first signal, a second transmitting port is connected to a second transceiver module to form a second transmitting path for supporting the transmission of the first signal, a third transmitting port is connected to any one of the first transceiver module, the second transceiver module and a third transceiver module to form a third transmitting path for supporting the transmission of a second signal, and a first switch is connected to the transceiver module not connected to the third transmitting port and is used for selecting and conducting a path between a fourth transmitting port and any one of the transceiver modules not connected to the third transmitting port to form a fourth transmitting path for supporting the transmission of the second signal. In this way, when the device simultaneously supports the transmission of two signals with partially overlapping frequency bands, the transmission efficiency and transmission quality of the signals in each frequency band can be improved.

Description

Technical Field

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

[0002] Currently, when an electronic device supports the transmission of signals with at least partially overlapping signals in two frequency bands, the signals are often transmitted through the same transmission path, so that the electronic device can only adopt the working mechanism of Time Division Duplexing (TDD) when transmitting signals. When the electronic device works in one signal frequency band, it must stop working in another signal frequency band, seriously affecting the signal transmission efficiency of the device. Summary of the Invention

[0003] Embodiments of this application provide a radio frequency system and a communication device, in order to improve the transmission efficiency and transmission quality of signals in each frequency band when simultaneously supporting the transmission of signals with at least partially overlapping signals in two frequency bands.

[0004] In a first aspect, embodiments of this application provide a radio frequency system, including:

[0005] A radio frequency transceiver, a first transceiver module, a second transceiver module, a third transceiver module, and a first switch. The radio frequency transceiver includes a first transmission port, a second transmission port, a third transmission port, and a fourth transmission port;

[0006] The first transmission port is connected to the first transceiver module to form a first transmission path for supporting the transmission of a first signal;

[0007] The second transmission port is connected to the second transceiver module to form a second transmission path for supporting the transmission of the first signal;

[0008] The third transmission port is connected to any one of the first transceiver module, the second transceiver module, and the third transceiver module to form a third transmission path for supporting the transmission of a second signal. The frequency bands of the first signal and the second signal at least partially overlap;

[0009] The first switch is respectively connected to the fourth transmission port and the transceiver module among the first transceiver module, the second transceiver module, and the third transceiver module that is not connected to the third transmission port. The first switch is used to select and conduct the path between the fourth transmission port and any one of the transceiver modules that is not connected to the third transmission port to form a fourth transmission path for supporting the transmission of the second signal.

[0010] In a second aspect, an embodiment of the present application provides a communication device, including a first antenna, a second antenna, a third antenna, and the radio frequency system described in the first aspect above. The radio frequency system includes a first transceiver module, a second transceiver module, and a third transceiver module; the first antenna is connected to the first transceiver module, the second antenna is connected to the second transceiver module, the third antenna is connected to the third transceiver module, and the first antenna, the second antenna, and the third antenna are respectively used for transmitting the first signal or the second signal.

[0011] It can be seen that in the embodiment of the present application, the first transmission port is connected to the first transceiver module to form a first transmission path for supporting the transmission of the first signal, the second transmission port is connected to the second transceiver module to form a second transmission path for supporting the transmission of the first signal, the third transmission port is connected to any one of the first transceiver module, the second transceiver module, and the third transceiver module to form a third transmission path for supporting the transmission of the second signal, and the first switch is connected to the transceiver module that is not connected to the third transmission port, and is used to select and conduct the path between the fourth transmission port and any one of the transceiver modules that is not connected to the third transmission port, so as to form a fourth transmission path for supporting the transmission of the second signal. In this way, this solution can transmit the first signal through the first transmission path and the second transmission path, and transmit the second signal through the third transmission path or the fourth transmission path, improving the transmission efficiency and transmission quality of the signals in each frequency band when the device supports the transmission of signals with at least partial overlap in two frequency bands simultaneously. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present application. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0013] Figure 1 is a schematic structural diagram of a radio frequency system provided by an embodiment of the present application;

[0014] Figure 2 is a schematic structural diagram of another radio frequency system provided by an embodiment of the present application;

[0015] Figure 3 is a schematic structural diagram of another radio frequency system provided by an embodiment of the present application;

[0016] Figure 4 is a schematic structural diagram of another communication device provided by an embodiment of the present application;

[0017] Figure 5 is a schematic structural diagram of another communication device provided by an embodiment of the present application;

[0018] Figure 6 It is a schematic diagram of the architecture of another communication device provided by an embodiment of the present application;

[0019] Figure 7 It is a schematic diagram of the structure of a communication device in an embodiment of the present application;

[0020] Figure 8 It is a schematic diagram of the architecture of a mobile phone provided by an embodiment of the present application. Detailed implementation manners

[0021] For the convenience of understanding the present application, in order to make the above-mentioned objects, features, and advantages of the present application more obvious and understandable, the following will describe the detailed implementation manners of the present application in conjunction with the accompanying drawings. Many specific details are set forth in the following description in order to fully understand the present application, and the preferred embodiments of the present application are given in the accompanying drawings. However, the present application can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the present application more thorough and comprehensive. The present application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without departing from the connotation of the present application. Therefore, the present application is not limited by the specific embodiments disclosed below.

[0022] In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one of such features. In the description of the present application, the meaning of "a plurality" is at least two, such as two, three, etc., unless otherwise specifically defined. In the description of the present application, the meaning of "several" is at least one, such as one, two, etc., unless otherwise specifically defined.

[0023] The radio frequency system involved in the embodiments of the present application can be applied to communication devices with wireless communication functions. The communication devices can be handheld devices, vehicle-mounted devices, wearable devices, computing devices, or other processing devices connected to a wireless modem, as well as various forms of user equipment (UE) (such as mobile phones), mobile stations (MS), and so on. For the convenience of description, the devices mentioned above are collectively referred to as communication devices. Network devices can include base stations, access points, etc.

[0024] Currently, due to the wide application of Bluetooth devices such as Bluetooth headsets, in order to reduce the occupied area of the mobile phone, lower costs, and solve the problem of coexistence and mutual interference between the first signal such as the WiFi 2.4G signal and the second signal such as the Bluetooth (BT) signal, the method adopted is to use a common transmitting and receiving path for the WiFi 2.4G signal and the BT signal in the radio frequency front end of the electronic device, and the two signals work in a time-sharing manner. However, it is difficult to balance the performance of WiFi and Bluetooth simultaneously, resulting in poor user experience.

[0025] In view of the above problems, the embodiments of the present application provide a radio frequency system and a communication device, which will be described in detail below.

[0026] Please refer to Figure 1 , Figure 1 which is a schematic diagram of the architecture of a radio frequency system provided by an embodiment of the present application. As shown in the figure, the radio frequency system 1 includes a radio frequency transceiver 10, a first transceiver module 20, a second transceiver module 30, a third transceiver module 40, and a first switch 50. The radio frequency transceiver 10 includes a first transmission port 101, a second transmission port 102, a third transmission port 103, and a fourth transmission port 104. The first transmission port 101 is connected to the first transceiver module 20 to form a first transmission path for supporting the transmission of the first signal. The second transmission port 102 is connected to the second transceiver module 30 to form a second transmission path for supporting the transmission of the first signal. The third transmission port 103 is connected to the second transceiver module 30 to form a third transmission path for supporting the transmission of the second signal, and at least part of the frequency band of the first signal overlaps with the frequency band of the second signal. The first switch 50 is respectively connected to the fourth transmission port 104 and the first transceiver module 20 and the third transceiver module 40. The first switch 50 is used to select and conduct the path between the fourth transmission port 104 and any one of the transceiver modules not connected to the third transmission port to form a fourth transmission path for supporting the transmission of the second signal.

[0027] Wherein, the third transmission port 103 is connected to any one of the first transceiver module 20, the second transceiver module 30, and the third transceiver module 40 to form a third transmission path for supporting the transmission of the second signal. The first switch 50 is respectively connected to the fourth transmission port 104 and the transceiver modules not connected to the third transmission port 103 among the first transceiver module 20, the second transceiver module 30, and the third transceiver module 40. The first switch 50 is used to select and conduct the path between the fourth transmission port 104 and any one of the transceiver modules not connected to the third transmission port 103 to form a fourth transmission path for supporting the transmission of the second signal.

[0028] Therefore, Figure 1 The connection method shown is only one of the connection methods of this solution. That is, the connection method of this solution may further include: the third transmission port 103 is connected to the first transceiver module 20 to form a third transmission path for supporting the transmission of the second signal, and at least part of the frequency band of the first signal overlaps with the frequency band of the second signal; the first switch 50 is respectively connected to the fourth transmission port 104 and the second transceiver module 30 and the third transceiver module 40. The first switch 50 is used to select and conduct the path between the fourth transmission port 104 and any one of the transceiver modules not connected to the third transmission port to form a fourth transmission path for supporting the transmission of the second signal.

[0029] Or the connection method of this solution may further include: the third transmission port 103 is connected to the third transceiver module 40 to form a third transmission path for supporting the transmission of the second signal, and at least part of the frequency band of the first signal overlaps with the frequency band of the second signal; the first switch 50 is respectively connected to the fourth transmission port 104 and the first transceiver module 20 and the second transceiver module 30. The first switch 50 is used to select and conduct the path between the fourth transmission port 104 and any one of the transceiver modules not connected to the third transmission port to form a fourth transmission path for supporting the transmission of the second signal.

[0030] Among them, the first switch can be a radio frequency switch, such as an SPDT switch. The radio frequency transceiver is also used to complete the conversion and inverse conversion processes between digital signals and radio frequency signals, including processes such as encapsulating digital signals into frames, converting digital-analog signals, modulation, and up-conversion. Eventually, the corresponding first signal or second signal is generated, or after receiving a signal, it undergoes a series of inverse processes and is sent to a central processing unit (CPU) for signal processing, including processes such as down-conversion, demodulation, conversion of analog-digital signals, and decapsulation. The first transceiver module, the second transceiver module, and the third transceiver module can mainly be used to amplify radio frequency signals to increase the transmission power and extend the transmission distance, or amplify them through a low-noise amplifier to improve the receiving sensitivity and increase the receiving distance. It can be seen that in this example, the first transmission port is connected to the first transceiver module to form a first transmission path for supporting the transmission of the first signal, the second transmission port is connected to the second transceiver module to form a second transmission path for supporting the transmission of the first signal, the third transmission port is connected to any one of the first transceiver module, the second transceiver module, and the third transceiver module to form a third transmission path for supporting the transmission of the second signal, and the first switch is connected to the transceiver module not connected to the third transmission port, and is used to select and conduct the path between the fourth transmission port and any one of the transceiver modules not connected to the third transmission port to form a fourth transmission path for supporting the transmission of the second signal. In this way, this solution can transmit the first signal through the first transmission path and the second transmission path, and transmit the second signal through the third transmission path or the fourth transmission path, improving the transmission efficiency and transmission quality of the signals in each frequency band when the device simultaneously supports the transmission of two signals with at least partial overlap in frequency bands.

[0031] It can be seen that in this example, it can be observed that in the embodiments of this application, the first transmission port is connected to the first transceiver module to form a first transmission path for supporting the transmission of the first signal, the second transmission port is connected to the second transceiver module to form a second transmission path for supporting the transmission of the first signal, the third transmission port is connected to any one of the first transceiver module, the second transceiver module, and the third transceiver module to form a third transmission path for supporting the transmission of the second signal, and the first switch is connected to the transceiver module not connected to the third transmission port, and is used to select and conduct the path between the fourth transmission port and any one of the transceiver modules not connected to the third transmission port to form a fourth transmission path for supporting the transmission of the second signal. In this way, this solution can transmit the first signal through the first transmission path and the second transmission path, and transmit the second signal through the third transmission path or the fourth transmission path, improving the transmission efficiency and transmission quality of the signals in each frequency band when the device simultaneously supports the transmission of two signals with at least partial overlap in frequency bands.

[0032] In a possible example, the frequency bands of the first signal and the second signal at least partially overlap. The first switch 50 is configured to select and conduct a path between the fourth transmitting port 104 and any one of the transceiver modules in the transceiver module group not connected to the third transmitting port 103 under the time-division duplex (TDD) operating mechanism, so as to form the fourth transmitting path, such that the radio frequency transceiver 10 transmits the first signal through the first transmitting path and the second transmitting path in a first time period, and transmits the second signal through the third transmitting path or the fourth transmitting path in a second time period.

[0033] Wherein, in this solution, the first signal may be a WiFi 2.4G signal, and the frequency band of this signal is between 2.400 GHz and 2.4835 GHz. The second signal may be a Bluetooth signal, and this signal operates between 2.400 GHz and 2.4835 GHz. The TDD operating mechanism means working in a time-slicing manner. In the same time slot, if WiFi is working, Bluetooth is not working, and vice versa. Therefore, under the TDD operating mechanism, if the first signal is transmitted in the current time period, the first signal can be transmitted through the paths formed by the first transceiver module and the second transceiver module respectively and the radio frequency transceiver. If the second signal is transmitted in the current time period, one transceiver module is selected from the first transceiver module, the second transceiver module, and the third transceiver module, and the second signal is transmitted through the path formed by this transceiver module and the radio frequency transceiver.

[0034] It can be seen that in this example, under the TDD operating mechanism, if the second signal is to be transmitted, one transceiver module can be selected from the three transceiver modules to transmit the second signal, which can improve the transmission efficiency and signal quality of the second signal.

[0035] In a possible example, when the first switch is connected to any one of the transceiver modules other than the target transceiver module, the first switch 50 is configured to select and conduct a path between the fourth transmitting port 104 and any one of the transceiver modules connected to the first switch 50, so as to form the fourth transmitting path, such that the radio frequency transceiver transmits the second signal through the third transmitting path in a second time period. The target transceiver module is the transceiver module connected to the target antenna among the first transceiver module 20, the second transceiver module 30, and the third transceiver module 40, and the target antenna is the antenna with the best signal quality among the antennas respectively connected to the first transceiver module 20, the second transceiver module 30, and the third transceiver module 40;

[0036] When the first switch 50 is connected to the target transceiver module, the first switch 50 is used to selectively conduct the fourth transmit port 104 and the target transmit module to form the fourth transmit path, so that the radio frequency transceiver 10 transmits the second signal through the fourth transmit path during the second time period.

[0037] Among them, if the transceiver module connected to the third transmit port 103 is the transceiver module with the best signal quality of the antennas among the three transceiver modules, then when transmitting the second signal, the second signal is transmitted through the third transmit path. If among the two transceiver modules connected to the fourth transmit port 104, there is a transceiver module connected to an antenna that is the best in signal quality among the three transceiver modules, then the on / off state of the first switch 50 is adjusted so that the path between the transceiver module corresponding to the antenna with the best signal quality and the radio frequency transceiver 10 is conducted through the first switch 50 to form the fourth transmit path, and the second signal is transmitted through the fourth transmit path.

[0038] For example, if the third transmit port 103 is connected to the second transceiver module 30, then at this time the first switch 50 is connected to the first transceiver module 20 and the third transceiver module 40. If the antenna connected to the second transceiver module has the best signal quality at this time, then the second signal is transmitted through the third transmit path between the second transceiver module 30 and the radio frequency transceiver 10. If the antenna connected to the first transceiver module has the best signal quality at this time, then the fourth transmit path between the first transceiver module 20 and the radio frequency transceiver 10 is conducted through the first switch 50, and the second signal is transmitted through the fourth transmit path. If the antenna connected to the third transceiver module has the best signal quality at this time, then the fourth transmit path between the third transceiver module 40 and the radio frequency transceiver 10 is conducted through the first switch 50, and the second signal is transmitted through the fourth transmit path.

[0039] It can be seen that in this embodiment, in the TDD working mode, by selecting the path between the transceiver module with the best-connected antenna among the three transceiver modules and the radio frequency transceiver to transmit the second signal, the transmission quality of the second signal can be improved.

[0040] In a possible example, the third transmit port 103 is connected to the first transceiver module 20 or the second transceiver module 30. In the Frequency Division Duplexing (FDD) working mechanism, the first switch 50 is used to selectively conduct the path between the fourth transmit port 104 and the third transceiver module 40 to form the fourth transmit path, so that the radio frequency transceiver 10 transmits the first signal through the first transmit path and the second transmit path, and transmits the second signal through the fourth transmit path.

[0041] Among them, when the third transmission port 103 is connected to the first transceiver module 20, the first switch 50 is respectively connected to the second transceiver module 30 and the third transceiver module 40. When the third transmission port 103 is connected to the second transceiver module 30, the first switch 50 is respectively connected to the first transceiver module 20 and the third transceiver module 40. Under the FDD working mechanism, WiFi and Bluetooth work in a frequency-division or channel-division manner, that is, in the same time slot, the first signal and the second signal can transmit signals through different frequencies or channels. Therefore, under the TDD working mechanism, the first signal can be transmitted through the path formed by the first transceiver module 20 and the second transceiver module 30 and the radio frequency transceiver 10, and the second signal can be transmitted through the path formed by the third transceiver module 40 and the radio frequency transceiver 10. That is to say, under the TDD working mechanism, the first switch 50 always conducts the path between the third transceiver module 40 and the radio frequency transceiver 10.

[0042] It can be seen that in this embodiment, a specific third transceiver module is determined for the transmission of the second signal, so that the radio frequency system of this solution can support the FDD working mechanism, and the first signal and the second signal have their own independent working paths, while avoiding interference between the first signal and the second signal and improving the signal transmission quality.

[0043] In a possible embodiment, the third transmission port 103 is connected to the third transceiver module 40, and the first switch 50 is respectively connected to the fourth transmission port 104, the first transceiver module 20, and the second transceiver module 30. Under the FDD working mechanism, the first switch 50 is used to selectively conduct the path between the fourth transmission port 104 and the first transceiver module 20 or the second transceiver module 30, so that the radio frequency transceiver 10 transmits the first signal through the first transmission path and the second transmission path, and transmits the second signal through the third transmission path.

[0044] Among them, when the third transmission port 103 is connected to the third transceiver module 40, under the FDD working mechanism, the first switch can arbitrarily conduct the path of any one of the first transceiver module 20 and the second transceiver module 30. The transmission of the second signal is always carried out through the third transmission path formed by the third transceiver module 40 and the radio frequency transceiver 10.

[0045] It can be seen that in this embodiment, the first signal is transmitted through the first transceiver module and the second transceiver module, and the second signal is transmitted through the third transceiver module, so that the radio frequency system of this solution can support the FDD working mechanism, and the first signal and the second signal have their own independent working paths, while avoiding interference between the first signal and the second signal and improving the signal transmission quality.

[0046] In a possible example, the first signal is a WiFi 2.4G signal, and the second signal is a Bluetooth signal.

[0047] It can be seen that in this example, with the popularization of Bluetooth headsets, especially True Wireless Stereo (TWS) headsets, the frequency of users using TWS headsets is increasing. Different from wired headsets, TWS headsets use low-power Bluetooth wireless communication technology to transmit audio data. This solution transmits the WiFi 2.4G signal through the first transmission path and the second transmission path, and transmits the Bluetooth signal through the third transmission path or the fourth transmission path. This can not only enable the Bluetooth signal to have three antenna options for transmission under the TDD working mechanism, but also under the FDD mechanism, the transmission of the WiFi 2.4G signal and the Bluetooth signal can have their own independent working paths, allowing the two communication technologies to work completely independently without interference, effectively improving the throughput of the WIFI 2.4G signal and the Bluetooth signal.

[0048] Please refer to Figure 2 , in a possible example, the radio frequency transceiver 10 further includes a first receiving port 105, a second receiving port 106, and a third receiving port 107; the first receiving port 105 is connected to the first transceiver module 20 to form a first receiving path for receiving the first signal or the second signal; the second receiving port 106 is connected to the second transceiver module 30 to form a second receiving path for receiving the first signal or the second signal; the third receiving port 107 is connected to the third transceiver module 40 to form a third receiving path for receiving the second signal.

[0049] It can be seen that in this example, the first receiving port and the second receiving port can be used to receive the first signal or the second signal, while the third receiving port is used to receive the second signal, enabling the video system to support the FDD working mechanism.

[0050] In a possible example, under the FDD working mechanism, the first signal is received through the first receiving path and the second receiving path, and the second signal is received through the third receiving path;

[0051] The frequency bands of the first signal and the second signal at least partially overlap. Under the TDD operating mechanism, within a first time period, the first signal is received through the first receiving path and the second receiving path. Within a second time period, the second signal is received through the receiving path corresponding to the target transceiver module. The target transceiver module is the transceiver module among the first transceiver module, the second transceiver module, and the third transceiver module that is connected to the target antenna, and the target antenna is the antenna with the best signal quality among the antennas respectively connected to the first transceiver module, the second transceiver module, and the third transceiver module.

[0052] It can be seen that in this embodiment, under the TDD operating mechanism, the radio frequency system can receive the second signal through the transceiver module with the best signal quality among the antennas connected to the three transceiver modules. Under the FDD operating mechanism, the first signal and the second signal in the radio frequency system have independent signal receiving paths, enabling the two communication technologies to work completely independently without interference.

[0053] Please refer to Figure 3 , in a possible embodiment, the radio frequency transceiver 10 further includes a first power detection port 108, a second power detection port 109, and a third power detection port 110. The first transceiver module 20 includes a first coupler 201. The second transceiver module 30 includes a second coupler 301. The third transceiver module 40 includes a third coupler 401. The first coupler 201 is connected to the first power detection port 108 and is used to couple and feedback the transmission power of the first transceiver module 20 to the radio frequency transceiver 10 to achieve power control. The second coupler 301 is connected to the second power detection port 109 and is used to couple and feedback the transmission power of the second transceiver module 30 to the radio frequency transceiver 10 to achieve power control. The third coupler 401 is connected to the third power detection port 110 and is used to couple and feedback the transmission power of the third transceiver module 40 to the radio frequency transceiver 10 to achieve power control.

[0054] In a possible embodiment, the first transceiver module 20 further includes a second switch. The first end of the second switch is connected to the first coupler 201. The second transceiver module 30 further includes a third switch. The first end of the third switch is connected to the second coupler 301. The third transceiver module further includes a fourth switch. The first end of the fourth switch is connected to the third coupler 401.

[0055] The first transceiver module further includes a first amplifier, a second amplifier, and a third amplifier. The second end of the second switch is respectively connected to the first amplifier, the second amplifier, and the third amplifier and is used to conduct the path between the first coupler 201 and the first amplifier or the second amplifier or the third amplifier.

[0056] The second transceiver module further includes a fourth amplifier, a fifth amplifier, and a sixth amplifier. The second terminal of the third switch is respectively connected to the fourth amplifier, the fifth amplifier, and the sixth amplifier, and is configured to conduct the path between the second coupler 301 and the fourth amplifier or the fifth amplifier or the sixth amplifier;

[0057] The third transceiver module further includes a seventh amplifier and an eighth amplifier. The third coupler 401 is respectively connected to the first terminal of the fourth switch and the seventh amplifier, and the eighth amplifier is connected to the first terminal of the fourth switch, so that the path of the seventh amplifier or the eighth amplifier is conducted through the fourth switch.

[0058] Wherein, the first amplifier, the second amplifier, the third amplifier, the fourth amplifier, the fifth amplifier, and the sixth amplifier are configured to amplify the first signal or the second signal, and the seventh amplifier and the eighth amplifier are configured to amplify the second signal.

[0059] In a specific implementation, the first amplifier, the third amplifier, the fourth amplifier, the sixth amplifier, and the seventh amplifier may be power amplifiers PA, and the second amplifier, the fifth amplifier, and the eighth amplifier may be low-noise amplifiers LNA.

[0060] In a specific implementation, the first transceiver module may further include a first bypass switch, which is connected in parallel with the second amplifier and can be used to prevent the received power from being too large to break down the second amplifier and affect the receiving performance of the RF system; the second transceiver module may further include a second bypass switch, which is connected in parallel with the fifth amplifier and can be used to prevent the received power from being too large to break down the fifth amplifier; the third transceiver module may include a third bypass switch, which is connected in parallel with the eighth amplifier and can be used to prevent the received power from being too large to break down the eighth amplifier.

[0061] In a specific implementation, the RF system may further include a filter, which is connected to the first transceiver module and is configured to filter out useless signals. And when the first signal is a WiFi 2.4G signal and the second signal is a Bluetooth signal, since both the WiFi 2.4G band and Bluetooth operate in the 2.4G-2.8G band, a 2.4G filter can be used to achieve the filtering effect.

[0062] Please refer to Figure 4 , Figure 4It is a schematic diagram of the architecture of a communication device provided by an embodiment of the present application. The communication device A includes a first antenna 60, a second antenna 70, a third antenna 80, and a radio frequency system 1 as described in the above embodiment. The radio frequency system 1 includes a first transceiver module 20, a second transceiver module 30, and a third transceiver module 40. The first antenna 60 is connected to the first transceiver module 20, the second antenna 70 is connected to the second transceiver module 30, and the third antenna 80 is connected to the third transceiver module 40. Two of the first antenna 60, the second antenna 70, and the third antenna 80 are used to transmit the first signal, and one of the first antenna 60, the second antenna 70, and the third antenna 80 is used to transmit the second signal.

[0063] In a possible example, under the TDD operating mechanism, the first antenna 60 and the second antenna 70 are used to transmit the first signal, and the antenna with the best signal quality among the first antenna 60, the second antenna 70, and the third antenna 80 is used to transmit the second signal.

[0064] Please refer to Figure 5 , Figure 5 It is a schematic diagram of the architecture of another communication device provided by an embodiment of the present application. As Figure 5 shown, the first coupling port in this solution is the Figure 5 "WiFi PDET0" port shown in

[0065] Figure 5 Figure 5The implementation logic of the architecture shown in this solution is as follows:

[0066] Under the TDD working mechanism, within the working period of the WiFi 2.4G signal, the WiFi 2.4G signal can simultaneously transmit the WiFi 2.4G signal through the first transmission port and the second transmission port, and simultaneously receive the WiFi 2.4G signal through the first reception port and the second reception port. At this time, only the first antenna and the second antenna are working, and the working mode of this communication device at this time is the Multiple Input Multiple Output (MIMO) working mode. The corresponding relationship between the working antenna of the WiFi 2.4G signal and the path is shown in Table 1.

[0067]

[0068] Table 1

[0069] Among them, " / " in the table means that the first switch can either select to conduct the path between the first transceiver module and the radio frequency transceiver, or select to conduct the path between the third transceiver module and the radio frequency transceiver.

[0070] Under the TDD working mechanism, within the working period of the Bluetooth signal, BT can select an optimal antenna to work among the first antenna, the second antenna, and the third antenna. At this time, the working mode is Antenna Switch Diversity (ASD). The radio frequency transceiver can detect the antenna with the best signal quality among these three antennas by switching the first switch, and then can control the first switch to switch to the corresponding path to use the antenna with the best signal to transmit the Bluetooth signal. The corresponding relationship between the working antenna of Bluetooth and the path is shown in Table 2.

[0071]

[0072] Table 2

[0073] Among them, " / " in the table means that the first switch can either select to conduct the path between the first transceiver module and the radio frequency transceiver, or select to conduct the path between the third transceiver module and the radio frequency transceiver.

[0074] In a possible instance, under the FDD working mechanism, the first antenna and the second antenna are used to transmit the first signal, and the third antenna is used to transmit the second signal.

[0075] Under the FDD working mechanism, on the working channel or frequency of the WiFi 2.4G signal, the WiFi 2.4G signal can be transmitted through the first transmitting port and the second transmitting port simultaneously, and the WiFi 2.4G signal can be received through the first receiving port and the second receiving port simultaneously. At this time, in the MIMO working mode, the first antenna and the second antenna are used simultaneously to transmit and receive the WiFi 2.4G signal. While on the Bluetooth signal working channel, the Bluetooth only transmits the Bluetooth signal through the fourth transmitting port and receives the signal through the third receiving port. At this time, the Bluetooth signal only uses the third antenna to work, which is a single-antenna working mode. The corresponding relationship between the working antennas and paths of the WiFi 2.4G signal and the Bluetooth signal at this time is shown in Table 3.

[0076]

[0077] Table 3

[0078] Among them, " / " in the table means that the first switch can either select to conduct the path between the first transceiver module and the radio frequency transceiver, or select to conduct the path between the third transceiver module and the radio frequency transceiver.

[0079] Please refer to Figure 6 , Figure 6 which is a schematic diagram of the architecture of another communication device provided by an embodiment of the present application. As shown in the figure, the first coupling port in this solution is the "WiFi PDET0" port shown in Figure 6 , the first transmitting port is the "WiFi TX0" port, the first receiving port is the "WiFi&BT RX0" port, the second transmitting port is the "WiFi TX1" port, the second coupling port is the "WiFi PDET1" port, the second receiving port is the "WiFi&BT RX1" port, the third coupling port is the "BT PDET" port, the third transmitting port is the "BT0 TX" port, the fourth transmitting port is the "BT1 TX" port, and the third receiving port is the "BT0RX" port. It should be noted that the third transmitting port can also be the "BT1 TX" port, then the fourth transmitting port is the "BT0 TX" port at this time. The first switch in the figure is an SPDT switch, and the path between the radio frequency transceiver and the first transceiver module can be conducted through pin1, and the path between the radio frequency transceiver and the second transceiver module can be conducted through pin2. FEM0, FEM1, and FEM2 represent the first transceiver module, the second transceiver module, and the third transceiver module respectively.

[0080] If the first signal is a WiFi 2.4G signal and the second signal is a Bluetooth signal, the implementation logic of this solution through the architecture shown in Figure 6 is as follows:

[0081] Under the TDD working mechanism, within the working period of the WiFi 2.4G signal, the WiFi 2.4G signal can be simultaneously transmitted through the first transmitting port and the second transmitting port, and the WiFi 2.4G signal can be simultaneously received through the first receiving port and the second receiving port. At this time, only the first antenna and the second antenna are working, and the working mode of this radio frequency system at this time is the multiple-input multiple-output (MIMO) working mode. The corresponding relationship between the working antennas of the WiFi 2.4G signal and the channels is shown in Table 4.

[0082]

[0083] Table 4

[0084] Among them, " / " in the table means that the first switch can either select to conduct the path between the first transceiver module and the radio frequency transceiver, or select to conduct the path between the second transceiver module and the radio frequency transceiver.

[0085] Under the TDD working mechanism, within the working period of the Bluetooth signal, the BT can select an optimal antenna to work among the first antenna, the second antenna, and the third antenna. At this time, the working mode is antenna switch diversity (ASD). The radio frequency transceiver can detect the antenna with the best signal quality among these three antennas by switching the first switch, and then can control the first switch to switch to the corresponding path to use the antenna with the best signal to transmit the Bluetooth signal. The corresponding relationship between the working antennas of the Bluetooth and the channels is shown in Table 5.

[0086]

[0087] Table 5

[0088] Among them, " / " in the table means that the first switch can either select to conduct the path between the first transceiver module and the radio frequency transceiver, or select to conduct the path between the second transceiver module and the radio frequency transceiver.

[0089] Under the FDD working mechanism, on the working channel or frequency of the WiFi 2.4G signal, the WiFi 2.4G signal can simultaneously transmit the WiFi 2.4G signal through the first transmitting port and the second transmitting port, and simultaneously receive the WiFi 2.4G signal through the first receiving port and the second receiving port. At this time, through the MIMO working mode, the first antenna and the second antenna are simultaneously used to transmit and receive the WiFi 2.4G signal.

[0090] Meanwhile, on the working channel of the Bluetooth signal, the Bluetooth only transmits the Bluetooth signal through the fourth transmitting port and receives the Bluetooth signal through the third receiving port. At this time, the Bluetooth only uses the third antenna to work, which is a single-antenna working mode. The corresponding relationship between the working antennas of the WiFi 2.4G signal and the Bluetooth signal and the channels is shown in Table 6.

[0091]

[0092] Table 6

[0093] Wherein, " / " in the table means that the first switch can either select to conduct the path between the first transceiver module and the radio frequency transceiver, or select to conduct the path between the second transceiver module and the radio frequency transceiver.

[0094] As Figure 7 shown Figure 7 is a schematic structural diagram of the communication device in the embodiment of the present application. In this embodiment, the communication device A is provided with the above-mentioned radio frequency system 1, the first antenna 60, the second antenna 70, and the third antenna 80. The communication device includes a first side 11, a second side 12, a third side 13, and a fourth side 14 that are connected in sequence end to end. The first side 11 and the third side 13 are the short sides of the communication device 1, and the second side 12 and the fourth side 14 are the long sides of the electronic device 1. The first side 11 and the third side 13 are opposite and spaced apart, the second side 12 and the fourth side 14 are opposite and spaced apart, the second side 12 is bent and connected to the first side 11 and the third side 13 respectively, and the fourth side 14 is bent and connected to the first side 11 and the third side 13 respectively.

[0095] The first antenna 60, the second antenna 70, and the third antenna 80 can be respectively arranged on each side of the communication device. So that the first transceiver module 20 is connected to the first antenna 60, the second transceiver module 30 is connected to the second antenna 70, and the third transceiver module 40 is connected to the third antenna 80. The first antenna can be arranged on the fourth side 14 of the communication device, the second antenna 70 can be arranged on the first side 11 of the communication device, and the third antenna 80 can be arranged on the second side 12 of the communication device. Of course, the above antenna arrangement method is only an example. For example, the first antenna 60 and the second antenna 70 can both be arranged on the first side 11 of the communication device.

[0096] The first antenna 60, the second antenna 70, and the third antenna 80 can be flexible printed circuit (FPC) antennas, or laser direct structuring (LDS) antennas, or print direct structuring (PDS) antennas, or metal stubs. It can be understood that the types of the first antenna 60, the second antenna 70, and the third antenna 80 can be the same or different.

[0097] As Figure 8As shown in the figure, further, taking the communication device as a smart phone 1000 as an example for illustration. Specifically, the smart phone 1000 may include a communication interface 1001, a processor 1002, a memory 1003, and a radio frequency system 1004.

[0098] Among them, the communication interface 1001 includes an internal interface and an external interface. The internal interface includes a radio frequency interface, a camera interface, a display interface, a microphone interface, etc. The external interface may include a CAN interface, an RS232 interface, an RS485 interface, an I2C interface, etc. The external interface is used to support the communication between the smart phone 1000 and other devices, and the internal interface is used to support the communication connection between the processor 1002 and other components in the smart phone 1000. For example, the processor 1002 is connected to the radio frequency system 1004 through the internal interface.

[0099] The processor 1002 is connected to each component in the smart phone 1000 through the internal interface and the bus 1005. The processor 1002 may be, for example, a central processing unit (CPU), a general-purpose processor, a digital signal processor (DSP), an application-specific integrated circuit (ASIC), a field programmable gate array (FPGA), or other programmable logic devices, transistor logic devices, hardware components, or any combination thereof. The processor may also be a combination that implements a computing function, such as a combination of one or more microprocessors, a combination of a DSP and a microprocessor, and so on. The processor 1002 may be configured to implement a control algorithm for controlling the use of the antenna in the smart phone 1000. The processor 1002 may also issue control commands for controlling each switch in the radio frequency system 1004, etc.

[0100] The memory 1003 can be a volatile memory, a non-volatile memory, or can include both volatile and non-volatile memories. Among them, the non-volatile memory can be a read-only memory (ROM), a programmable ROM (PROM), an erasable PROM (EPROM), an electrically erasable PROM (EEPROM), or a flash memory. The volatile memory can be a random access memory (RAM), which is used as an external cache. By way of example but not limitation, many forms of random access memory (RAM) are available, such as static RAM (SRAM), dynamic RAM (DRAM), synchronous DRAM (SDRAM), double data rate SDRAM (DDR SDRAM), enhanced SDRAM (ESDRAM), synchlink DRAM (SLDRAM), and directrambus RAM (DR RAM).

[0101] The radio frequency system 1004 can be the radio frequency system in any of the foregoing embodiments. Among them, the radio frequency system 1004 can also be used to process radio frequency signals in multiple different frequency bands. For example, a satellite positioning radio frequency circuit for receiving satellite positioning signals at 1575 MHz, a WiFi and Bluetooth transceiver radio frequency circuit for processing the 2.4 GHz and 5 GHz frequency bands of IEEE802.11 communication, and a cellular phone transceiver radio frequency circuit for processing wireless communication in cellular phone frequency bands (such as frequency bands of 850 MHz, 900 MHz, 1800 MHz, 1900 MHz, 2100 MHz, and Sub-6G frequency bands). Among them, the Sub-6G frequency band can specifically include the 2.496 GHz - 6 GHz frequency band and the 3.3 GHz - 6 GHz frequency band.

[0102] The above embodiments only represent several implementation manners of the present application. The description is relatively specific and detailed, but it should not be construed as a limitation on the patent scope of the present application. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present application, several modifications and improvements can still be made, and these all belong to the protection scope of the present application. Therefore, the protection scope of the patent of the present application shall be subject to the appended claims.

Claims

1. A radio frequency system, characterized in that, it includes: a radio frequency transceiver, a first transceiver module, a second transceiver module, a third transceiver module and a first switch, and the radio frequency transceiver includes a first transmission port, a second transmission port, a third transmission port and a fourth transmission port; The first transmission port is connected to the first transceiver module to form a first transmission path for supporting the transmission of a first signal; The second transmission port is connected to the second transceiver module to form a second transmission path for supporting the transmission of the first signal; The third transmission port is connected to any one of the first transceiver module, the second transceiver module and the third transceiver module to form a third transmission path for supporting the transmission of a second signal, and at least part of the frequency band of the first signal overlaps with the frequency band of the second signal; The first switch is respectively connected to the fourth transmission port and the transceiver module among the first transceiver module, the second transceiver module and the third transceiver module that is not connected to the third transmission port. The first switch is used to select and conduct the path between the fourth transmission port and any one of the transceiver modules that is not connected to the third transmission port to form a fourth transmission path for supporting the transmission of the second signal.

2. The system according to claim 1, characterized in that, the first switch is used to select and conduct the path between the fourth transmission port and any one of the transceiver modules that is not connected to the third transmission port under the time division duplex (TDD) working mechanism to form the fourth transmission path, so that the radio frequency transceiver transmits the first signal through the first transmission path and the second transmission path in the first time period, and transmits the second signal through the third transmission path or the fourth transmission path in the second time period.

3. The system according to claim 2, characterized in that, when the first switch is connected to any one of the transceiver modules except the target transceiver module, the first switch is used to select and conduct the path between the fourth transmission port and any one of the transceiver modules connected to the first switch to form the fourth transmission path, so that the radio frequency transceiver transmits the second signal through the third transmission path in the second time period. The target transceiver module is the transceiver module among the first transceiver module, the second transceiver module and the third transceiver module that is connected to the target antenna, and the target antenna is the antenna with the best signal quality among the antennas respectively connected to the first transceiver module, the second transceiver module and the third transceiver module; when the first switch is connected to the target transceiver module, the first switch is used to select and conduct the path between the fourth transmission port and the target transceiver module to form the fourth transmission path, so that the radio frequency transceiver transmits the second signal through the fourth transmission path in the second time period.

4. The system according to claim 1, characterized in that, The third transmission port is connected to the first transceiver module or the second transceiver module. Under the frequency division duplex (FDD) operating mechanism, the first switch is used to selectively connect the fourth transmission port to the third transceiver module to form the fourth transmission path, so that the radio frequency transceiver transmits the first signal through the first transmission path and the second transmission path, and transmits the second signal through the fourth transmission path.

5. The system according to claim 1, wherein, the third transmission port is connected to the third transceiver module, and the first switch is respectively connected to the fourth transmission port, the first transceiver module, and the second transceiver module. Under the FDD operating mechanism, the first switch is used to selectively connect the fourth transmission port to the first transceiver module or the second transceiver module, so that the radio frequency transceiver transmits the first signal through the first transmission path and the second transmission path, and transmits the second signal through the third transmission path.

6. The system according to any one of claims 1-5, wherein, the first signal is a WiFi 2.4G signal, and the second signal is a Bluetooth signal.

7. The system according to claim 1, wherein, the radio frequency transceiver further includes a first reception port, a second reception port, and a third reception port; the first reception port is connected to the first transceiver module to form a first reception path for receiving the first signal or the second signal; the second reception port is connected to the second transceiver module to form a second reception path for receiving the first signal or the second signal; the third reception port is connected to the third transceiver module to form a third reception path for receiving the second signal.

8. The system according to claim 7, wherein, under the FDD operating mechanism, the first signal is received through the first reception path and the second reception path, and the second signal is received through the third reception path; under the time division duplex (TDD) operating mechanism, in the first time period, the first signal is received through the first reception path and the second reception path, and in the second time period, the second signal is received through the reception path corresponding to the target transceiver module, where the target transceiver module is the transceiver module among the first transceiver module, the second transceiver module, and the third transceiver module that is connected to the target antenna, and the target antenna is the antenna with the best signal quality among the antennas respectively connected to the first transceiver module, the second transceiver module, and the third transceiver module.

9. The system according to claim 1, wherein, the radio frequency transceiver further includes a first power detection port, a second power detection port, and a third power detection port. The first transceiver module includes a first coupler, the second transceiver module includes a second coupler, and the third transceiver module includes a third coupler; the first coupler is connected to the first power detection port and is used to couple and feedback the transmission power of the first transceiver module to the radio frequency transceiver to achieve power control; The second coupler is connected to the second power detection port and is configured to couple and feedback the transmission power of the second transceiver module to the radio frequency transceiver to achieve power control; The third coupler is connected to the third power detection port and is configured to couple and feedback the transmission power of the third transceiver module to the radio frequency transceiver to achieve power control.

10. A communication device, characterized in that, it includes a first antenna, a second antenna, a third antenna and a radio frequency system according to any one of claims 1-9, and the radio frequency system includes a first transceiver module, a second transceiver module and a third transceiver module; The first antenna is connected to the first transceiver module, the second antenna is connected to the second transceiver module, the third antenna is connected to the third transceiver module, and two of the first antenna, the second antenna and the third antenna are used to transmit the first signal, and one of the first antenna, the second antenna and the third antenna is used to transmit the second signal.

11. The device according to claim 10, characterized in that, under the TDD operating mechanism, the first antenna and the second antenna are used to transmit the first signal, and the antenna with the best signal quality among the first antenna, the second antenna and the third antenna is used to transmit the second signal.

12. The device according to claim 10, characterized in that, under the FDD operating mechanism, the first antenna and the second antenna are used to transmit the first signal, and the third antenna is used to transmit the second signal.

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