Radio frequency circuit, electronic equipment, radio frequency control method and device and medium
By introducing a switching switch in the RF circuit, avoiding the signal passing through the duplexer in half-duplex mode, the problem of large signal loss in the prior art is solved, and higher signal quality and lower power consumption are achieved.
Patent Information
- Application Number
- CN202411429628.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-14
- Publication Date
- 2025-01-10
AI Technical Summary
The existing RF front-end solutions introduce large signal loss in reduced capability communication scenarios, resulting in poor signal quality.
A radio frequency circuit is designed to avoid signal passing through the duplexer in half-duplex communication mode by switching switches, thereby reducing plug-in loss, and signal isolation is used in full-duplex mode.
Signal loss is significantly reduced, RF signal quality is improved, especially in half-duplex mode, signal loss is reduced by half, and signal strength is improved.
Smart Images
Figure CN119298930A_ABST
Abstract
Description
Technical Field
[0001] The present application belongs to the field of communication technology, and specifically relates to a radio frequency circuit, electronic equipment, radio frequency control method, device and medium. Background Art
[0002] At present, the Reduced Capability (Redcap) communication scenario uses the current RF front-end solution, which uses a duplexer to isolate the transmission TX signals and the reception RX signals of different frequencies to prevent interference between signals of different frequencies. However, this solution will introduce a large insertion loss, which will cause a large loss of both TX and RX signals, about 40% to 50%. It can be seen that the existing RF solution has a large signal loss, resulting in poor signal quality. Summary of the invention
[0003] The purpose of the embodiments of the present application is to provide a radio frequency circuit, an electronic device, a radio frequency control method, a device and a medium, which can solve the problem that the existing radio frequency solutions have large signal loss and thus poor signal quality.
[0004] In a first aspect, an embodiment of the present application provides a radio frequency circuit, including: a radio frequency module, a power amplifier, a first switching switch, a duplexer, an antenna switch, and an antenna;
[0005] The first end of the RF module is connected to the first end of the power amplifier, the second end of the power amplifier is connected to the fixed end of the first switch, the first movable end of the first switch is connected to the first RF end of the antenna switch, the second movable end of the first switch is connected to the first end of the duplexer, the second end of the duplexer is connected to the second RF end of the antenna switch, and the fixed end of the antenna switch is connected to the antenna;
[0006] The second end of the RF module is connected to the third RF end of the antenna switch; the third end of the RF module is connected to the third end of the duplexer;
[0007] Wherein, when the fixed end of the first switch is connected to the first movable end, the radio frequency circuit operates in a half-duplex communication mode;
[0008] When the fixed end of the first switch is connected to the second movable end, the radio frequency circuit operates in a full-duplex communication mode.
[0009] In a second aspect, an embodiment of the present application provides an electronic device, comprising the radio frequency circuit described in the first aspect.
[0010] In a third aspect, an embodiment of the present application provides a radio frequency control method, which is performed by the electronic device according to the second aspect, and the method includes:
[0011] Determining a type of the first radio frequency signal, and selecting a corresponding radio frequency path according to the type of the first radio frequency signal to transmit the first radio frequency signal;
[0012] Wherein, when the type of the first radio frequency signal is a half-duplex communication signal:
[0013] If the first RF signal is a transmit TX signal, the first RF signal is transmitted through a first RF path, and the first RF path passes through a RF module, a power amplifier, a first switching switch, an antenna switch and an antenna in sequence;
[0014] If the first RF signal is a received RX signal, the first RF signal is received through a second RF path, and the second RF path passes through the antenna, the antenna switch, and the RF module in sequence.
[0015] In a fourth aspect, an embodiment of the present application provides a radio frequency control device, which is provided in the electronic device according to the second aspect, and the radio frequency control device includes:
[0016] A determination module, used to determine the type of the first radio frequency signal;
[0017] a selection module, configured to select a corresponding radio frequency path according to the type of the first radio frequency signal, so as to transmit the first radio frequency signal;
[0018] The selection module is specifically configured to, when the type of the first radio frequency signal is a half-duplex communication signal:
[0019] If the first RF signal is a transmit TX signal, the first RF signal is transmitted through a first RF path, and the first RF path passes through a RF module, a power amplifier, a first switching switch, an antenna switch and an antenna in sequence;
[0020] If the first RF signal is a received RX signal, the first RF signal is received through a second RF path, and the second RF path passes through the antenna, the antenna switch, and the RF module in sequence.
[0021] In a fifth aspect, an embodiment of the present application provides an electronic device, which includes a processor and a memory, wherein the memory stores programs or instructions that can be run on the processor, and when the program or instructions are executed by the processor, the steps of the method described in the first aspect are implemented.
[0022] In a sixth aspect, an embodiment of the present application provides a readable storage medium, on which a program or instruction is stored, and when the program or instruction is executed by a processor, the steps of the method described in the first aspect are implemented.
[0023] In a seventh aspect, an embodiment of the present application provides a chip, comprising a processor and a communication interface, wherein the communication interface is coupled to the processor, and the processor is used to run a program or instruction to implement the method described in the first aspect.
[0024] In an eighth aspect, an embodiment of the present application provides a computer program product, which is stored in a storage medium and is executed by at least one processor to implement the method described in the first aspect.
[0025] In an embodiment of the present application, the RF circuit includes: a RF module, a power amplifier, a first switching switch, a duplexer, an antenna switch and an antenna; the first end of the RF module is connected to the first end of the power amplifier, the second end of the power amplifier is connected to the fixed end of the first switching switch, the first movable end of the first switching switch is connected to the first RF end of the antenna switch, the second movable end of the first switching switch is connected to the first end of the duplexer, the second end of the duplexer is connected to the second RF end of the antenna switch, and the fixed end of the antenna switch is connected to the antenna; the second end of the RF module is connected to the third RF end of the antenna switch; the third end of the RF module is connected to the third end of the duplexer; wherein, when the fixed end of the first switching switch is connected to the first movable end, the RF circuit operates in a half-duplex communication mode; when the fixed end of the first switching switch is connected to the second movable end, the RF circuit operates in a full-duplex communication mode.
[0026] The RF control method includes: determining the type of a first RF signal, and selecting a corresponding RF path according to the type of the first RF signal to transmit the first RF signal; wherein, when the type of the first RF signal is a half-duplex communication signal: if the first RF signal is a transmitted TX signal, the first RF signal is transmitted through a first RF path, and the first RF path passes through a RF module, a power amplifier, a first switching switch, an antenna switch and an antenna in sequence; if the first RF signal is a received RX signal, the first RF signal is received through a second RF path, and the second RF path passes through the antenna, the antenna switch and the RF module in sequence.
[0027] In this way, since the RF circuit can operate in half-duplex communication mode or full-duplex communication mode, and can select different RF paths to transmit RF signals according to different communication modes, especially in half-duplex communication mode, the RF path can skip the duplexer, thereby greatly reducing the insertion loss caused by the duplexer, avoiding large signal losses, and thus improving the RF signal quality. BRIEF DESCRIPTION OF THE DRAWINGS
[0028] Figure 1It is one of the radio frequency circuit structure diagrams provided in the embodiments of the present application;
[0029] Figure 2 This is the second RF circuit structure diagram provided in the embodiment of the present application;
[0030] Figure 3 is a flow chart of a radio frequency control method provided in an embodiment of the present application;
[0031] Figure 4 is a structural diagram of a radio frequency device provided in an embodiment of the present application;
[0032] Figure 5 is a structural diagram of an electronic device provided in an embodiment of the present application;
[0033] Figure 6 It is a hardware structure diagram of the electronic device provided in the embodiment of the present application. DETAILED DESCRIPTION
[0034] The following will be combined with the drawings in the embodiments of the present application to clearly describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments in the present application belong to the scope of protection of this application.
[0035] The terms "first", "second", etc. in the specification and claims of the present application are used to distinguish similar objects, and are not used to describe a specific order or sequence. It should be understood that the terms used in this way are interchangeable where appropriate, so that the embodiments of the present application can be implemented in an order other than those illustrated or described herein, and the objects distinguished by "first", "second", etc. are generally of one type, and the number of objects is not limited. For example, the first object can be one or more. In addition, "and / or" in the specification and claims represents at least one of the connected objects, and the character " / " generally indicates that the objects associated with each other are in an "or" relationship.
[0036] Traditional RF solutions use duplexers to isolate two different frequencies and prevent mutual interference, which introduces large insertion loss and causes large losses to both TX and RX signals, about 40% to 50%.
[0037] In response to the problems of traditional solutions, the embodiments of the present application aim to reduce signal loss by judging the type of signal and selecting different RF paths in communication scenarios such as Redcap, thereby improving signal quality and reducing power consumption.
[0038] The RF circuit and RF control method provided in the embodiments of the present application are described in detail below through specific embodiments and their application scenarios in conjunction with the accompanying drawings.
[0039] See also Figure 1 , Figure 1 The structure diagram of the radio frequency circuit provided in the embodiment of the present application is as follows: Figure 1 As shown, it includes: a radio frequency module 11, a power amplifier 12, a first switch 13, a duplexer 14, an antenna switch 15 and an antenna 16;
[0040] A first end of the RF module 11 is connected to a first end of the power amplifier 12, a second end of the power amplifier 12 is connected to a fixed end of a first switching switch 13, a first movable end of the first switching switch 13 is connected to a first RF end of an antenna switch 15, a second movable end of the first switching switch 13 is connected to a first end of a duplexer 14, a second end of the duplexer 14 is connected to a second RF end of the antenna switch 15, and a fixed end of the antenna switch 15 is connected to an antenna 16;
[0041] The second end of the RF module 11 is connected to the third RF end of the antenna switch 15; the third end of the RF module 11 is connected to the third end of the duplexer 14;
[0042] Wherein, when the fixed end of the first switch 13 is connected to the first movable end, the radio frequency circuit operates in a half-duplex communication mode;
[0043] When the fixed end of the first switch 13 is connected to the second movable end, the radio frequency circuit operates in a full-duplex communication mode.
[0044] The circuit components and connection relationships of the radio frequency circuit provided in the embodiment of the present application are as follows: Figure 1 As shown, it can be seen that the embodiment of the present application adds a switch, namely, the first switch 13, to the radio frequency circuit to separate two transmission paths, namely Figure 1 The paths where TX0 and TX1 are located in the transmission path can be switched by the first switch 13 to control whether the transmission TX signal output from the RF module 11 passes through the duplexer 14 to reach the antenna 16 for transmission.
[0045] In addition, the embodiment of the present application also adds a direct receiving path in the radio frequency circuit that does not pass through the duplexer 14, that is, Figure 1 In this way, there are two receiving paths in the RF circuit, namely Figure 1 The receiving path where RX0 and RX1 are located can be specifically switched through the antenna switch 15 to control whether the RX signal received from the antenna 16 passes through the duplexer 14 to reach the RF module 11.
[0046] In specific implementation, the switching states of the first switching switch 13 and the antenna switch 15 can be controlled accordingly according to different communication modes, wherein one communication mode is full-duplex, that is, transmission and reception work simultaneously, and the other is half-duplex, in which transmission and reception are not performed simultaneously and at different frequencies. Therefore, when the RF circuit is required to work in the half-duplex communication mode, the RF signal does not need to be isolated by a duplexer, so that the fixed end of the first switching switch 13 can be controlled to be connected to the first moving end to select the RF path that does not pass through the duplexer 14 to transmit and receive signals in a time-sharing manner; when the RF circuit is required to work in the full-duplex communication mode, RF signals of different frequencies need to be isolated by a duplexer, so that the fixed end of the first switching switch 13 can be controlled to be connected to the second moving end to select the RF path that passes through the duplexer 14 to transmit and receive signals simultaneously.
[0047] The RF circuit is used in electronic devices such as mobile phones and usually works in the intermediate frequency band. Therefore, the RF module 11 can also be called an intermediate frequency device; the power amplifier (PA) 12 is used to enhance the power of the transmitted signal to ensure the quality of the transmitted signal and the transmission distance.
[0048] The first switch 13 may be a single-pole double-throw switch, that is, it includes a fixed end and two movable ends. By controlling the fixed end to be connected to different movable ends, the switching of the radio frequency path can be achieved.
[0049] The function of the duplexer 14 is to isolate the transmission and reception signals of different frequencies to ensure that both reception and transmission can work normally at the same time. It is composed of two sets of bandpass filters of different frequencies to prevent the local transmission signal from being transmitted to the receiver, so that the same antenna can transmit and receive two signals at the same time.
[0050] The antenna switch 15 is a single-pole multi-throw switch, such as including four RF signal ports and one fixed port, and different RF ports correspond to processing RF signals of different frequency bands, for example, Figure 1 In the embodiment, there are four RF terminals, namely RF1, RF2, RF3 and RF4. Each RF terminal receives / outputs signals of different frequency bands. By controlling the fixed terminal to be connected to different RF terminals, the RF path and the working frequency band can be switched. That is, when the antenna switch 15 is switched to different RF terminals, the RF circuit operates in different RF frequency bands.
[0051] The antenna 16 is used to transmit signals or receive signals from other devices such as a base station.
[0052] It should be noted that the embodiments of the present application are applicable to application scenarios where half-duplex communication exists, such as RedCap communication scenarios. RedCap can also be called lightweight technology. Among them, 5G RedCap is an important foundation for realizing the interconnection between people, machines and things in 5G communication technology, and will play an active role in building new infrastructure for the Internet of Things, enabling the transformation and upgrading of traditional industries, and promoting the deep integration of the digital economy and the real economy.
[0053] Optionally, in half-duplex communication mode:
[0054] The fixed end of the antenna switch 15 is connected to the first RF end to transmit a signal through a first RF path; the first RF path passes through the RF module 11, the power amplifier 12, the first switching switch 13, the antenna switch 15 and the antenna 16 in sequence;
[0055] Alternatively, the fixed end of the antenna switch 15 is connected to the third RF end to receive a signal through a second RF path, and the second RF path passes through the antenna 16, the antenna switch 15 and the RF module 11 in sequence.
[0056] That is, when the RF circuit operates in the half-duplex communication mode, when a signal needs to be transmitted, the fixed end of the first switching switch 13 can be controlled to be connected to the first moving end, and the fixed end of the antenna switch 15 can be controlled to be connected to the first RF end (such as Figure 1 RF4 in the circuit) is connected to select the first RF path (i.e. Figure 1 When receiving a signal, the fixed end of the antenna switch 15 and the third RF end (such as Figure 1 RF1 in the circuit) is connected to select the second RF path (i.e. Figure 1 The RX1 path in the receiver receives the signal.
[0057] Specifically, the RF module 11 outputs an RF modulated signal, namely the TX signal, which is a half-duplex signal. After the signal is amplified by the PA amplification module, namely the power amplifier 12, the modulated signal enters the first switching switch 13. The half-duplex signal is transmitted through the TX1 transmission path to the antenna switch 15, output to the antenna 16, and finally radiated through the antenna 16 to complete the signal transmission to the base station.
[0058] After receiving the signal, the base station sends the signal, and the RF circuit receives the signal through the antenna 16, and the antenna switch 15 is switched to Figure 1 In the RF1 path shown, the RX signal sent by the base station passes through the antenna switch 15 and enters the RX1 receiving path. Finally, the RX signal enters the RF module 11 for demodulation, completing the entire communication interaction process with the base station.
[0059] In this way, in the half-duplex communication mode, the duplexer is replaced by the introduction of a switching switch, so that the RF path in this mode does not need to pass through the duplexer, thereby greatly reducing insertion loss, reducing signal loss, and improving signal quality.
[0060] Alternatively, if Figure 2 As shown, the RF circuit further includes a second switch 17, the first movable end of the first switch 13 is connected to the first movable end of the second switch 17, the second movable end of the second switch 17 is connected to the RF module 11, and the movable end of the second switch 17 is connected to the first RF end of the antenna switch 15; wherein, in the half-duplex communication mode:
[0061] The fixed end of the second switch 17 is connected to the first movable end, and the fixed end of the antenna switch 15 is connected to the first RF end, so as to transmit a signal through the first RF path; the first RF path passes through the RF module 11, the power amplifier 12, the first switch 13, the second switch 17, the antenna switch 15 and the antenna 16 in sequence;
[0062] Alternatively, the fixed end of the second switching switch 17 is connected to the second moving end, and the fixed end of the antenna switch 15 is connected to the first RF end, so as to receive the signal through a third RF path, and the third RF path passes through the antenna 16, the antenna switch 15, the second switching switch 17 and the RF module 11 in sequence;
[0063] Alternatively, the fixed end of the antenna switch 15 is connected to the third RF end to receive signals through the second RF path.
[0064] As another implementation, Figure 1 On the basis of further providing a switch, that is, the second switch 17, or Figure 1 is Figure 2 A toggle switch is reduced on the basis.
[0065] The circuit components and connection relationships of the radio frequency circuit provided in this embodiment are as follows: Figure 2 As shown, it can be seen that in this embodiment, two switching switches are added to the radio frequency circuit, namely the first switching switch 13 and the second switching switch 17, thereby separating two transmission paths, namely Figure 2 The TX0 and TX1 paths in the figure are connected, and an additional receiving path is added, that is, Figure 2 The path where RX2 is located makes it possible to switch different transmission paths through the first switching switch 13, and switch the transmission path or the receiving path through the second switching switch 17 to control whether the transmission TX signal output from the RF module 11 passes through the duplexer 14 to reach the antenna 16 for transmission, and whether it is a transmission or reception signal.
[0066] In this embodiment, when the radio frequency circuit operates in the half-duplex communication mode, when a signal needs to be transmitted, the fixed end of the first switching switch 13 can be controlled to be connected to the first movable end, the fixed end of the second switching switch 17 can be controlled to be connected to the first movable end, and the fixed end of the antenna switch 15 can be controlled to be connected to the first radio frequency end (such as Figure 2 RF4 in the circuit) is connected to select the first RF path (i.e. Figure 2 When receiving a signal, the fixed end of the second switch 17 can be controlled to be connected to the second movable end, and the fixed end of the antenna switch 15 can be controlled to be connected to the first RF end (such as Figure 2 RF4 in the circuit) is connected to select the third RF path (i.e. Figure 2 The TRX1 path and RX2 path in the antenna switch 15 may receive the signal, or the fixed end of the antenna switch 15 may be controlled to communicate with the third RF end (such as Figure 2 RF1 in the circuit) is connected to select the second RF path (i.e. Figure 2 The RX1 path in the receiver receives the signal.
[0067] Specifically, the RF module 11 outputs an RF modulated signal, namely the TX signal, which is a half-duplex signal. After the signal is amplified by the power amplifier PA12, the modulated signal enters the first switch, namely the first switching switch 13. The half-duplex signal passes through the TX1 transmission path to enter the second switch, namely the second switching switch 17. At this time, since the transmission and reception are not simultaneous, there is no need to filter out the out-of-band signal. The TX1 signal passes through the antenna switch 15 and is output to the antenna 16, and finally radiated through the antenna 16 to complete the signal transmission to the base station.
[0068] After receiving the signal, the base station sends the signal, and the RF circuit receives the signal through the antenna 16, and the antenna switch 15 is switched to Figure 2 In the RF4 path shown, the RX signal sent by the base station passes through the antenna switch 15 and the second switching switch 17, enters the RX2 receiving path, and finally the RX signal enters the RF module 11 for demodulation, completing the entire communication interaction process with the base station. In this implementation, in the half-duplex communication mode, there is no need to switch the RF path of the antenna switch 15, and the RF4 port can be kept switched on.
[0069] Alternatively, after receiving the signal, the base station sends a signal, and the antenna switch 15 switches to the following Figure 2 In the RF1 path shown, the RX signal sent by the base station passes through the antenna switch 15 and enters the RX1 receiving path. Finally, the RX signal enters the RF module 11 for demodulation, completing the entire communication interaction process with the base station.
[0070] It should be noted that, in a specific implementation, the antenna switch 15 can select a corresponding radio frequency path according to the frequency band of the received signal, and decide whether to receive the signal through the path corresponding to RF1 or RF4.
[0071] Thus, in the half-duplex communication mode, two switching switches are introduced to replace the duplexer, so that the RF path in this mode does not need to pass through the duplexer, which can greatly reduce insertion loss, reduce signal loss, and improve signal quality. In one mode, there is no need to switch the antenna switch when transmitting and receiving signals, and in another mode, due to the lack of a switching switch, there is lower insertion loss.
[0072] Optionally, in full-duplex communication mode:
[0073] The fixed end of the antenna switch 15 is connected to the second RF end to transmit a signal through the fourth RF path or receive a signal through the fifth RF path;
[0074] The fourth radio frequency path passes through the radio frequency module 11, the power amplifier 12, the first switch 13, the duplexer 14, the antenna switch 15 and the antenna 16 in sequence;
[0075] The fifth radio frequency path passes through the antenna 16 , the antenna switch 15 , the duplexer 14 and the radio frequency module 11 in sequence.
[0076] That is, when the radio frequency circuit operates in the full-duplex communication mode, the fixed end of the antenna switch 15 and the second radio frequency end (such as Figure 1 RF3 in the duplexer 14) is connected to select the RF path through the duplexer 14 to separate the simultaneously transmitted transmit signal and receive signal. Specifically, the fourth RF path (i.e. Figure 1 , Figure 2 TX0 and TRX0 channels in the RF transmission path) or transmit signals through the fifth RF channel (i.e. Figure 1 , Figure 2 The TRX0 path and RX0 path in the receive signal.
[0077] Specifically, the RF module 11 outputs an RF modulated signal, namely, a TX signal, which is a full-duplex signal. After the signal is amplified by the power amplifier PA12, the modulated signal enters the first switching switch 13. The full-duplex signal enters the duplexer 14 through the TX0 path. After filtering out-of-band signals, the TX signal passes through the antenna switch 15 and is output to the antenna 16. Finally, it is radiated through the antenna 16 to complete the signal transmission to the base station. After the base station receives the signal, the downlink signal is received through the antenna 16, and the antenna switch 15 is switched to Figure 1 , Figure 2 In the RF3 path shown, the RX signal sent by the base station passes through the duplexer 14 and enters the RX0 receiving path. Finally, the RX signal enters the RF module 11 for demodulation, completing the entire communication interaction process with the base station.
[0078] In this way, the RF path suitable for full-duplex communication mode can be selected by switching the switch, and the transmission signal and the reception signal can be separated by the duplexer to prevent the signals from interfering with each other. The RF circuit can support both full-duplex communication and half-duplex communication at the same time, and can switch and select different RF paths to complete signal transmission in different communication modes, which expands the use scenarios of the RF circuit.
[0079] In addition, in order to better illustrate the practical beneficial effects that can be brought about by the embodiments of the present application, the following compares the traditional solution and the embodiments of the present application from the perspective of the overall insertion loss of the RF circuit. Figure 1 , Figure 2 The scheme shown:
[0080] Generally, the insertion loss of a duplexer is about 2-3db, and the insertion loss of a switch is about 0.3db, which is a difference of nearly 10 times. For traditional RF solutions, whether in full-duplex mode or half-duplex mode, the insertion loss of the TX channel can usually reach 3.3db, and the insertion loss of the RX channel is 3.3db.
[0081] exist Figure 2 In the RF solution 1 shown, the TX channel insertion loss is 3.6db in full-duplex mode, and the RX channel insertion loss is 3.6db. In half-duplex mode, the TX channel insertion loss drops to 0.9db, and the RX channel insertion loss drops to 0.6db.
[0082] exist Figure 1 In the RF solution 2 shown, the TX channel insertion loss is 3.6db and the RX channel insertion loss is 3.6db in full-duplex mode, while in half-duplex mode, the TX channel insertion loss is only 0.6db and the RX channel insertion loss is only 0.3db.
[0083] The details can be shown in Table 1 below:
[0084] Table 1 Insertion loss comparison of different solutions
[0085]
[0086] It can be seen that the insertion loss reduction brought about by the RF circuit solution provided in the embodiment of the present application is very obvious, and the insertion loss is improved by about 3db, which is equivalent to doubling the signal strength.
[0087] In summary, through the RF circuit solution in the embodiment of the present application, the insertion loss is optimized, the signal loss is reduced, and the battery life and signal quality are improved.
[0088] The present application also provides an electronic device, including the above Figure 1 or Figure 2 Radio frequency circuit in the illustrated embodiment. It should be noted that in this embodiment, the implementation of the electronic device is similar to the implementation of the radio frequency circuit described above, and can achieve the same technical effects as the above embodiment, and will not be described here in order to avoid repetition.
[0089] See also Figure 3 , Figure 3 The flowchart of the radio frequency control method provided in the embodiment of the present application is executed by the electronic device provided in the above embodiment, such as Figure 3 As shown, the method comprises the following steps:
[0090] Step 301: determine the type of a first radio frequency signal, and select a corresponding radio frequency path according to the type of the first radio frequency signal to transmit the first radio frequency signal;
[0091] Wherein, when the type of the first radio frequency signal is a half-duplex communication signal:
[0092] If the first RF signal is a transmit TX signal, the first RF signal is transmitted through a first RF path, and the first RF path passes through a RF module, a power amplifier, a first switching switch, an antenna switch and an antenna in sequence;
[0093] If the first RF signal is a received RX signal, the first RF signal is received through a second RF path, and the second RF path passes through the antenna, the antenna switch, and the RF module in sequence.
[0094] The above-mentioned first RF signal can be understood as a signal to be transmitted or received. Specifically, the type of the first RF signal can be determined, and based on the determined signal type, it is determined which RF path to select to transmit the signal, and then the switching switch and antenna switch in the RF circuit are controlled accordingly.
[0095] In specific implementation, the RF module can determine whether the signal to be transmitted is a full-duplex signal or a half-duplex signal. If it is determined to be a half-duplex signal, the signal is transmitted through the first RF path. Figure 1 As shown, the signal passes through the RF module 11, the power amplifier 12, the first switching switch 13 and the antenna switch 15 in sequence to reach the antenna 16, and then is transmitted through the antenna 16; and the signal can be received through the second RF path, that is, the signal is received through the antenna 16 and reaches the RF module 11 through the antenna switch 15.
[0096] Optionally, when the radio frequency path of the electronic device further includes a second switch, and the type of the first radio frequency signal is a half-duplex communication signal:
[0097] If the first radio frequency signal is a transmit TX signal, the first radio frequency path also passes through the second switch;
[0098] If the first RF signal is a received RX signal, the first RF signal is received through the second RF path or the third RF path, wherein the third RF path passes through the antenna, the antenna switch, the second switching switch and the RF module in sequence.
[0099] That is, in some embodiments, the radio frequency circuit in the electronic device is as follows Figure 2 As shown in the circuit structure, for the RF circuit structure, when the RF module determines that the signal to be transmitted is a half-duplex signal, it can select to transmit the signal through the first RF path, and the RF path is Figure 1 On the basis of, it also needs to pass through the second switch 17, such as Figure 2 As shown, the signal passes through the RF module 11, the power amplifier 12, the first switching switch 13, the second switching switch 17 and the antenna switch 15 in sequence to reach the antenna 16, and is then transmitted through the antenna 16; and the signal can be received through the second RF path or the third RF path, that is, the signal is received through the antenna 16 and reaches the RF module 11 through the antenna switch 15, or, passes through the antenna switch 15 and the second switching switch 17 in sequence to reach the RF module 11.
[0100] In this way, in the half-duplex communication mode, since the RF path does not need to pass through the duplexer, the insertion loss can be greatly reduced, the signal loss can be reduced, and the signal quality can be improved.
[0101] Optionally, when the type of the first radio frequency signal is a full-duplex communication signal:
[0102] If the first RF signal is a transmit TX signal, the first RF signal is transmitted through a fourth RF path, wherein the fourth RF path sequentially passes through the RF module, the power amplifier, the first switch, the duplexer, the antenna switch and the antenna;
[0103] If the first RF signal is a received RX signal, the first RF signal is received through a fifth RF path, wherein the fifth RF path passes through the antenna, the antenna switch, the duplexer and the RF module in sequence.
[0104] Specifically, when the radio frequency module determines that the signal to be transmitted is a full-duplex signal, it selects to transmit the signal through the fourth radio frequency path, such as Figure 1 , Figure 2 As shown, the signal passes through the RF module 11, the power amplifier 12, the first switching switch 13, the duplexer 14 and the antenna switch 15 in sequence to reach the antenna 16, and is then transmitted through the antenna 16; and the signal can be received through the fifth RF path, that is, the signal is received through the antenna 16, and successively passes through the antenna switch 15 and the duplexer 14 to reach the RF module 11.
[0105] In this way, in the full-duplex communication mode, the RF path passing through the duplexer can be selected to separate the transmit signal and the receive signal to prevent the signals from interfering with each other.
[0106] The RF control method in the embodiment of the present application determines the type of the first RF signal, and selects a corresponding RF path according to the type of the first RF signal to transmit the first RF signal; wherein, when the type of the first RF signal is a half-duplex communication signal: if the first RF signal is a TX signal, the first RF signal is transmitted through the first RF path, and the first RF path passes through the RF module, the power amplifier, the first switching switch, the antenna switch and the antenna in sequence; if the first RF signal is a RX signal, the first RF signal is received through the second RF path, and the second RF path passes through the antenna, the antenna switch and the RF module in sequence. In this way, by judging the type of RF signal, the corresponding RF path is selected to transmit the RF signal, especially in the half-duplex communication mode, the RF path can not pass through the duplexer, thereby greatly reducing the insertion loss caused by the duplexer, avoiding large signal loss, and thus improving the quality of the RF signal.
[0107] The RF control method provided in the embodiment of the present application may be executed by a RF control device. In the embodiment of the present application, the RF control device provided in the embodiment of the present application is described by taking the RF control method executed by the RF control device as an example.
[0108] See also Figure 4 , Figure 4 The schematic diagram of the structure of the radio frequency control device provided in the embodiment of the present application is provided in the electronic device described in the above embodiment, such as Figure 4 As shown, the radio frequency control device 400 includes:
[0109] A determination module 401, configured to determine a type of a first radio frequency signal;
[0110] A selection module 402, configured to select a corresponding radio frequency path according to the type of the first radio frequency signal to transmit the first radio frequency signal;
[0111] The selection module 402 is specifically configured to, when the type of the first radio frequency signal is a half-duplex communication signal:
[0112] If the first RF signal is a transmit TX signal, the first RF signal is transmitted through a first RF path, and the first RF path passes through a RF module, a power amplifier, a first switching switch, an antenna switch and an antenna in sequence;
[0113] If the first RF signal is a received RX signal, the first RF signal is received through a second RF path, and the second RF path passes through the antenna, the antenna switch, and the RF module in sequence.
[0114] Optionally, when the radio frequency path of the electronic device further includes a second switch, the selection module 402 is specifically configured to, when the type of the first radio frequency signal is a half-duplex communication signal:
[0115] If the first radio frequency signal is a transmit TX signal, the first radio frequency path also passes through the second switch;
[0116] If the first RF signal is a received RX signal, the first RF signal is received through the second RF path or the third RF path, wherein the third RF path passes through the antenna, the antenna switch, the second switching switch and the RF module in sequence.
[0117] Optionally, the selection module 402 is further configured to: when the type of the first radio frequency signal is a full-duplex communication signal:
[0118] If the first RF signal is a transmit TX signal, the first RF signal is transmitted through a fourth RF path, wherein the fourth RF path sequentially passes through the RF module, the power amplifier, the first switch, the duplexer, the antenna switch and the antenna;
[0119] If the first RF signal is a received RX signal, the first RF signal is received through a fifth RF path, wherein the fifth RF path passes through the antenna, the antenna switch, the duplexer and the RF module in sequence.
[0120] The RF control device 400 in the embodiment of the present application determines the type of the first RF signal, and selects a corresponding RF path according to the type of the first RF signal to transmit the first RF signal; wherein, when the type of the first RF signal is a half-duplex communication signal: if the first RF signal is a TX signal, the first RF signal is transmitted through the first RF path, and the first RF path passes through the RF module, the power amplifier, the first switching switch, the antenna switch and the antenna in sequence; if the first RF signal is a RX signal, the first RF signal is received through the second RF path, and the second RF path passes through the antenna, the antenna switch and the RF module in sequence. In this way, by judging the type of RF signal, the corresponding RF path is selected to transmit the RF signal, especially in the half-duplex communication mode, the RF path can not pass through the duplexer, thereby greatly reducing the insertion loss caused by the duplexer, avoiding large signal loss, and thus improving the quality of the RF signal.
[0121] The radio frequency control device in the embodiment of the present application can be an electronic device, or a component in the electronic device, such as an integrated circuit or a chip. The electronic device can be a terminal, or it can be other devices other than a terminal. Exemplarily, the electronic device can be a mobile phone, a tablet computer, a laptop computer, a PDA, a vehicle-mounted electronic device, a mobile Internet device (Mobile Internet Device, MID), an augmented reality (augmented reality, AR) / virtual reality (virtual reality, VR) device, a robot, a wearable device, an ultra-mobile personal computer (ultra-mobile personal computer, UMPC), a netbook or a personal digital assistant (personal digital assistant, PDA), etc., and can also be a server, a network attached storage (Network Attached Storage, NAS), a personal computer (personal computer, PC), a television (television, TV), a teller machine or a self-service machine, etc., which is not specifically limited in the embodiment of the present application.
[0122] The radio frequency control device in the embodiment of the present application may be a device having an operating system. The operating system may be an Android operating system, an IOS operating system, or other possible operating systems, which are not specifically limited in the embodiment of the present application.
[0123] The radio frequency control device provided in the embodiment of the present application can achieve Figure 4 The various processes implemented by the method embodiment can achieve the same technical effect, and to avoid repetition, they will not be described here.
[0124] Alternatively, if Figure 5 As shown, an embodiment of the present application further provides an electronic device 500, including a processor 501 and a memory 502, wherein the memory 502 stores a program or instruction that can be run on the processor 501, and when the program or instruction is executed by the processor 501, each step of the above-mentioned radio frequency control method embodiment is implemented, and the same technical effect can be achieved. To avoid repetition, it will not be repeated here.
[0125] It should be noted that the electronic devices in the embodiments of the present application include the mobile electronic devices and non-mobile electronic devices mentioned above.
[0126] Figure 6 A schematic diagram of the hardware structure of an electronic device to implement an embodiment of the present application.
[0127] The electronic device 600 includes but is not limited to: a radio frequency unit 601, a network module 602, an audio output unit 603, an input unit 604, a sensor 605, a display unit 606, a user input unit 607, an interface unit 608, a memory 609, and a processor 610. The radio frequency unit 601 may be provided with Figure 1 or Figure 2 The RF circuit shown.
[0128] Those skilled in the art will appreciate that the electronic device 600 may also include a power source (such as a battery) for supplying power to each component, and the power source may be logically connected to the processor 610 through a power management system, thereby implementing functions such as managing charging, discharging, and power consumption management through the power management system. Figure 6 The electronic device structure shown in the figure does not constitute a limitation on the electronic device. The electronic device may include more or fewer components than shown in the figure, or combine certain components, or arrange the components differently, which will not be described in detail here.
[0129] The processor 610 is configured to:
[0130] Determining a type of the first radio frequency signal, and selecting a corresponding radio frequency path according to the type of the first radio frequency signal to transmit the first radio frequency signal;
[0131] Wherein, when the type of the first radio frequency signal is a half-duplex communication signal:
[0132] If the first RF signal is a transmit TX signal, the first RF signal is transmitted through a first RF path, and the first RF path passes through a RF module, a power amplifier, a first switching switch, an antenna switch and an antenna in sequence;
[0133] If the first RF signal is a received RX signal, the first RF signal is received through a second RF path, and the second RF path passes through the antenna, the antenna switch, and the RF module in sequence.
[0134] Optionally, the processor 610 is further configured to: when the radio frequency path of the electronic device further includes a second switch and the type of the first radio frequency signal is a half-duplex communication signal:
[0135] If the first RF signal is a transmission TX signal, the first RF signal is transmitted through the first RF path, and the first RF path also passes through the second switch;
[0136] If the first RF signal is a received RX signal, the first RF signal is received through the second RF path or the third RF path, wherein the third RF path passes through the antenna, the antenna switch, the second switching switch and the RF module in sequence.
[0137] Optionally, the processor 610 is further configured to: when the type of the first radio frequency signal is a full-duplex communication signal:
[0138] If the first RF signal is a transmit TX signal, the first RF signal is transmitted through a fourth RF path, wherein the fourth RF path sequentially passes through the RF module, the power amplifier, the first switch, the duplexer, the antenna switch and the antenna;
[0139] If the first RF signal is a received RX signal, the first RF signal is received through a fifth RF path, wherein the fifth RF path passes through the antenna, the antenna switch, the duplexer and the RF module in sequence.
[0140] It should be understood that in the embodiment of the present application, the input unit 604 may include a graphics processor (GPU) 6041 and a microphone 6042, and the graphics processor 6041 processes the image data of a static picture or video obtained by an image capture device (such as a camera) in a video capture mode or an image capture mode. The display unit 606 may include a display panel 6061, and the display panel 6061 may be configured in the form of a liquid crystal display, an organic light emitting diode, etc. The user input unit 607 includes a touch panel 6071 and at least one of other input devices 6072. The touch panel 6071 is also called a touch screen. The touch panel 6071 may include two parts: a touch detection device and a touch controller. Other input devices 6072 may include, but are not limited to, a physical keyboard, function keys (such as a volume control button, a switch button, etc.), a trackball, a mouse, and a joystick, which will not be repeated here.
[0141] The memory 609 can be used to store software programs and various data. The memory 609 may mainly include a first storage area for storing programs or instructions and a second storage area for storing data, wherein the first storage area may store an operating system, an application program or instructions required for at least one function (such as a sound playback function, an image playback function, etc.), etc. In addition, the memory 609 may include a volatile memory or a non-volatile memory, or the memory 609 may include both volatile and non-volatile memories. Among them, the non-volatile memory may be a read-only memory (ROM), a programmable read-only memory (PROM), an erasable programmable read-only memory (EPROM), an electrically erasable programmable read-only memory (EEPROM), or a flash memory. The volatile memory may be a random access memory (RAM), a static random access memory (SRAM), a dynamic random access memory (DRAM), a synchronous dynamic random access memory (SDRAM), a double data rate synchronous dynamic random access memory (DDRSDRAM), an enhanced synchronous dynamic random access memory (ESDRAM), a synchronous link dynamic random access memory (SLDRAM) and a direct memory bus random access memory (DRRAM). The memory 609 in the embodiment of the present application includes but is not limited to these and any other suitable types of memory.
[0142] The processor 610 may include one or more processing units; optionally, the processor 610 integrates an application processor and a modem processor, wherein the application processor mainly processes operations related to an operating system, a user interface, and application programs, and the modem processor mainly processes wireless communication signals, such as a baseband processor. It is understandable that the modem processor may not be integrated into the processor 610.
[0143] An embodiment of the present application also provides a readable storage medium, on which a program or instruction is stored. When the program or instruction is executed by a processor, each process of the above-mentioned radio frequency control method embodiment is implemented, and the same technical effect can be achieved. To avoid repetition, it will not be repeated here.
[0144] The processor is the processor in the electronic device described in the above embodiment. The readable storage medium includes a computer readable storage medium, such as a computer read-only memory ROM, a random access memory RAM, a magnetic disk or an optical disk.
[0145] An embodiment of the present application further provides a chip, which includes a processor and a communication interface, the communication interface is coupled to the processor, and the processor is used to run programs or instructions to implement the various processes of the above-mentioned radio frequency control method embodiment, and can achieve the same technical effect. To avoid repetition, it will not be repeated here.
[0146] It should be understood that the chip mentioned in the embodiments of the present application can also be called a system-level chip, a system chip, a chip system or a system-on-chip chip, etc.
[0147] An embodiment of the present application provides a computer program product, which is stored in a storage medium. The program product is executed by at least one processor to implement the various processes of the above-mentioned radio frequency control method embodiment, and can achieve the same technical effect. To avoid repetition, it will not be repeated here.
[0148] It should be noted that, in this article, the terms "comprise", "include" or any other variant thereof are intended to cover non-exclusive inclusion, so that the process, method, article or device including a series of elements includes not only those elements, but also includes other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise one..." do not exclude the presence of other identical elements in the process, method, article or device including the element. In addition, it should be pointed out that the scope of the methods and devices in the embodiments of the present application is not limited to performing functions in the order shown or discussed, and may also include performing functions in a substantially simultaneous manner or in reverse order according to the functions involved, for example, the described method may be performed in an order different from that described, and various steps may also be added, omitted, or combined. In addition, the features described with reference to certain examples may be combined in other examples.
[0149] Through the description of the above implementation methods, those skilled in the art can clearly understand that the above-mentioned embodiment methods can be implemented by means of software plus a necessary general hardware platform, and of course by hardware, but in many cases the former is a better implementation method. Based on such an understanding, the technical solution of the present application, or the part that contributes to the prior art, can be embodied in the form of a computer software product, which is stored in a storage medium (such as ROM / RAM, a disk, or an optical disk), and includes a number of instructions for a terminal (which can be a mobile phone, a computer, a server, or a network device, etc.) to execute the methods described in each embodiment of the present application.
[0150] The embodiments of the present application are described above in conjunction with the accompanying drawings, but the present application is not limited to the above-mentioned specific implementation methods. The above-mentioned specific implementation methods are merely illustrative and not restrictive. Under the guidance of the present application, ordinary technicians in this field can also make many forms without departing from the purpose of the present application and the scope of protection of the claims, all of which are within the protection of the present application.
Claims
1. A radio frequency circuit, characterized in that: include: A radio frequency module, a power amplifier, a first switching switch, a duplexer, an antenna switch and an antenna; The first end of the RF module is connected to the first end of the power amplifier, the second end of the power amplifier is connected to the fixed end of the first switch, the first movable end of the first switch is connected to the first RF end of the antenna switch, the second movable end of the first switch is connected to the first end of the duplexer, the second end of the duplexer is connected to the second RF end of the antenna switch, and the fixed end of the antenna switch is connected to the antenna; The second end of the RF module is connected to the third RF end of the antenna switch; the third end of the RF module is connected to the third end of the duplexer; Wherein, when the fixed end of the first switch is connected to the first movable end, the radio frequency circuit operates in a half-duplex communication mode; When the fixed end of the first switch is connected to the second movable end, the radio frequency circuit operates in a full-duplex communication mode.
2. The radio frequency circuit according to claim 1, characterized in that: In half-duplex communication mode: The fixed end of the antenna switch is connected to the first RF end to transmit a signal through a first RF path; the first RF path passes through the RF module, the power amplifier, the first switch, the antenna switch and the antenna in sequence; Alternatively, the fixed end of the antenna switch is connected to a third RF end to receive a signal through a second RF path, and the second RF path passes through the antenna, the antenna switch and the RF module in sequence.
3. The radio frequency circuit according to claim 1, characterized in that: It also includes a second switch, wherein the first movable end of the first switch is connected to the first movable end of the second switch, the second movable end of the second switch is connected to the RF module, and the movable end of the second switch is connected to the first RF end of the antenna switch; wherein, in the half-duplex communication mode: The fixed end of the second switch is connected to the first movable end, and the fixed end of the antenna switch is connected to the first RF end, so as to transmit a signal through the first RF path; the first RF path passes through the RF module, the power amplifier, the first switch, the second switch, the antenna switch and the antenna in sequence; Alternatively, the fixed end of the second switch is connected to the second movable end, and the fixed end of the antenna switch is connected to the first RF end to receive signals through a third RF path, and the third RF path passes through the antenna, the antenna switch, the second switch and the RF module in sequence; Alternatively, the fixed end of the antenna switch is connected to a third radio frequency end to receive a signal through the second radio frequency path.
4. The radio frequency circuit according to any one of claims 1 to 3, characterized in that: In full-duplex communication mode: The fixed end of the antenna switch is connected to the second radio frequency end to transmit a signal through a fourth radio frequency path or receive a signal through a fifth radio frequency path; The fourth radio frequency path passes through the radio frequency module, the power amplifier, the first switch, the duplexer, the antenna switch and the antenna in sequence; The fifth radio frequency path passes through the antenna, the antenna switch, the duplexer and the radio frequency module in sequence.
5. An electronic device, characterized in that: The invention comprises the radio frequency circuit according to any one of claims 1 to 4.
6. A radio frequency control method, characterized in that: Executed by the electronic device of claim 5, comprising: Determining a type of the first radio frequency signal, and selecting a corresponding radio frequency path according to the type of the first radio frequency signal to transmit the first radio frequency signal; Wherein, when the type of the first radio frequency signal is a half-duplex communication signal: If the first RF signal is a transmit TX signal, the first RF signal is transmitted through a first RF path, and the first RF path passes through a RF module, a power amplifier, a first switching switch, an antenna switch and an antenna in sequence; If the first RF signal is a received RX signal, the first RF signal is received through a second RF path, and the second RF path passes through the antenna, the antenna switch, and the RF module in sequence.
7. The method according to claim 6, characterized in that In the case where the radio frequency path of the electronic device further includes a second switch, and the type of the first radio frequency signal is a half-duplex communication signal: If the first radio frequency signal is a transmit TX signal, the first radio frequency path also passes through the second switch; If the first RF signal is a received RX signal, the first RF signal is received through the second RF path or the third RF path, wherein the third RF path passes through the antenna, the antenna switch, the second switching switch and the RF module in sequence.
8. The method according to claim 6, characterized in that When the first radio frequency signal is a full-duplex communication signal: If the first RF signal is a transmit TX signal, the first RF signal is transmitted through a fourth RF path, wherein the fourth RF path sequentially passes through the RF module, the power amplifier, the first switch, the duplexer, the antenna switch and the antenna; If the first RF signal is a received RX signal, the first RF signal is received through a fifth RF path, wherein the fifth RF path passes through the antenna, the antenna switch, the duplexer and the RF module in sequence.
9. A radio frequency control device, characterized in that: In the electronic device according to claim 5, the radio frequency control device comprises: A determination module, used to determine the type of the first radio frequency signal; a selection module, configured to select a corresponding radio frequency path according to the type of the first radio frequency signal, so as to transmit the first radio frequency signal; The selection module is specifically configured to, when the type of the first radio frequency signal is a half-duplex communication signal: If the first RF signal is a transmit TX signal, the first RF signal is transmitted through a first RF path, and the first RF path passes through a RF module, a power amplifier, a first switching switch, an antenna switch and an antenna in sequence; If the first RF signal is a received RX signal, the first RF signal is received through a second RF path, and the second RF path passes through the antenna, the antenna switch, and the RF module in sequence.
10. An electronic device, characterized in that: The method comprises a processor and a memory, wherein the memory stores a program or instruction that can be run on the processor, and when the program or instruction is executed by the processor, the steps of the radio frequency control method according to any one of claims 6 to 8 are implemented.