CN115395974B - Radio frequency front-end module, radio frequency system, communication equipment and communication method - Google Patents
Radio frequency front-end module, radio frequency system, communication equipment and communication method Download PDFInfo
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- CN115395974B CN115395974B CN202210994530.7A CN202210994530A CN115395974B CN 115395974 B CN115395974 B CN 115395974B CN 202210994530 A CN202210994530 A CN 202210994530A CN 115395974 B CN115395974 B CN 115395974B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
- H04B1/06—Receivers
- H04B1/16—Circuits
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
- H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
- H04B7/0413—MIMO systems
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D30/00—Reducing energy consumption in communication networks
- Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks
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Abstract
The embodiment of the application provides a radio frequency front end module, a radio frequency system, communication equipment and a communication method, wherein the radio frequency front end module comprises a first front end module and a second front end module, a single-input single-output communication mode of a first signal can be realized through the first front end module when a first network is started, a single-input single-output communication mode of a second signal can be realized through the second front end module when the second network is started, and a multiple-input multiple-output communication mode of the first signal can be realized through the first front end module and the second front end module when the first network is started and the second network is not started. And the hardware cost and the layout area are reduced while the data transmission efficiency is improved.
Description
Technical Field
The application relates to the technical field of radio frequency, in particular to a radio frequency front end module, a radio frequency system, communication equipment and a communication method.
Background
With the development of technology, wireless communication technology is also mature, and in order to increase data transmission rate, multiple input multiple output (Multiple Input Multiple Output, MIMO) functions are generally supported, but when implementing the MIMO functions of signals, hardware cost is high and occupied wiring area is large.
Disclosure of Invention
In a first aspect, an embodiment of the present application provides a radio frequency front end module, the radio frequency front end module includes:
the first front-end module comprises a first power amplifier, a first switch, a first filter and a first low noise amplifier, wherein the first switch is respectively connected with the first power amplifier, the first filter and the first low noise amplifier, and is used for transmitting signals through the first power amplifier, the first switch and the first filter and receiving signals through the first filter, the first switch and the first low noise amplifier;
a second front end module including a second power amplifier, a second switch, a second filter, a third switch, and a second low noise amplifier, the second switch being connected to one end of the second power amplifier, the second filter, the third filter, and one end of the second low noise amplifier, respectively, the third switch being connected to the other end of the second filter and the other end of the third filter, respectively, the second front end module being configured to transmit signals through the second power amplifier, the second switch, the second filter/the third filter, the third switch, and to receive signals through the third switch, the second filter/the third filter, the second switch, the second low noise amplifier;
The radio frequency front end module is used for realizing a single-input single-output communication mode of a first signal through the first front end module when a first network is started, realizing a single-input single-output communication mode of a second signal through the second front end module when a second network is started, and realizing a multiple-input multiple-output communication mode of the first signal through the first front end module and the second front end module when the first network is started and the second network is not started.
In a second aspect, embodiments of the present application provide a radio frequency system, including:
the radio frequency front end module according to the first aspect of the embodiment of the present application;
the radio frequency transceiver is connected with the radio frequency front end module and is used for transmitting a first transmitting signal, a first receiving signal, a second transmitting signal and a second receiving signal;
the first antenna is connected with the first front-end module;
the second antenna is connected with the second front-end module;
the radio frequency system is used for realizing the multiple-input multiple-output functions of the first transmitting signal and the first receiving signal through the radio frequency front-end module; or, the multiple-input multiple-output function of the second transmitting signal and the second receiving signal is realized through the radio frequency front end module.
In a third aspect, embodiments of the present application provide a communication device, including:
a radio frequency system according to the second aspect of the embodiments of the present application.
In a fourth aspect, an embodiment of the present application provides a communication method, which is applied to the communication device in the third aspect of the embodiment of the present application, where the method includes:
detecting the starting state of the current network;
when a first network is started, controlling a first front-end module to transmit a first signal so as to realize a single-input single-output communication mode of the first signal;
when the second network is started, controlling the second front-end module to transmit a second signal so as to realize a single-input single-output communication mode of the second signal;
and when the first network is started and the second network is not started, controlling the first front-end module and the second front-end module to simultaneously transmit the first signal so as to realize a multiple-input multiple-output communication mode of the first signal.
It can be seen that the embodiment of the application provides a radio frequency front end module, a radio frequency system, a communication device and a communication method, which include a first front end module and a second front end module, and can realize a single-input single-output communication mode of a first signal when a first network is started, realize a single-input single-output communication mode of a second signal when a second network is started, and realize a multiple-input multiple-output communication mode of the first signal when the first network is started and the second network is not started. And the hardware cost and the layout area are reduced while the data transmission efficiency is improved.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for the description of the embodiments will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic architecture diagram of a radio frequency front end module according to an embodiment of the present application;
fig. 2 is a schematic architecture diagram of another rf front-end module according to an embodiment of the present disclosure;
fig. 3 is a schematic architecture diagram of another rf front-end module according to an embodiment of the present disclosure;
fig. 4 is a schematic architecture diagram of another rf front-end module according to an embodiment of the present disclosure;
fig. 5 is a schematic architecture diagram of a radio frequency system according to an embodiment of the present application;
fig. 6 is a schematic architecture diagram of another radio frequency system according to an embodiment of the present application;
fig. 7 is a schematic structural diagram of a communication device according to an embodiment of the present application;
fig. 8 is a flow chart of a communication method according to an embodiment of the present application;
fig. 9 is a schematic structural diagram of another communication device according to an embodiment of the present application;
Fig. 10 is a flow chart of another communication method according to an embodiment of the present application;
fig. 11 is a schematic structural diagram of another communication device according to an embodiment of the present application.
Detailed Description
In order to make the present application solution better understood by those skilled in the art, the following description will clearly and completely describe the technical solution in the embodiments of the present application with reference to the accompanying drawings in the embodiments of the present application, and it is apparent that the described embodiments are only some embodiments of the present application, not all embodiments. All other embodiments, which can be made by one of ordinary skill in the art based on the embodiments herein without making any inventive effort, are intended to be within the scope of the present application.
The terms first, second and the like in the description and in the claims of the present application and in the above-described figures, are used for distinguishing between different objects and not for describing a particular sequential order. Furthermore, the terms "comprise" and "have," as well as any variations thereof, are intended to cover a non-exclusive inclusion. For example, a process, method, system, article, or apparatus that comprises a list of steps or elements is not limited to only those listed steps or elements but may include other steps or elements not listed or inherent to such process, method, article, or apparatus.
It should be understood that the term "and/or" is merely an association relationship describing the associated object, and means that three relationships may exist, for example, a and/or B may mean: a exists alone, A and B exist together, and B exists alone. In this context, the character "/" indicates that the front and rear associated objects are an "or" relationship. The term "plurality" as used in the embodiments herein refers to two or more.
The "connection" in the embodiments of the present application refers to various connection manners such as direct connection or indirect connection, so as to implement communication between devices, which is not limited in any way in the embodiments of the present application.
Reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment may be included in at least one embodiment of the present application. The appearances of such phrases in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. Those of skill in the art will explicitly and implicitly appreciate that the embodiments described herein may be combined with other embodiments.
The radio frequency front end module provided in the present application may form a radio frequency system, and the radio frequency system may be applied to a communication device, where the communication device may be a handheld device, a vehicle-mounted device, a wearable device, a computing device, or other processing devices connected to a wireless modem, and various types of User Equipment (UE) (e.g., a Mobile phone), a Mobile Station (MS), and so on, which are not specifically limited herein.
Referring to fig. 1, fig. 1 is a schematic architecture diagram of a rf front-end module according to an embodiment of the present disclosure, where the rf front-end module 100 includes a first front-end module 110 and a second front-end module 120.
The first front-end module 110 may include a first power amplifier 111, a first switch 112, a first filter 113, and a first low noise amplifier 114, where the first power amplifier 111 is connected to a first end of the first switch 112, the first low noise amplifier 114 is connected to a second end of the first switch 112, and one end of the first filter 113 is connected to a third end of the first switch 112; the second front-end module 120 may include a second power amplifier 121, a second switch 122, a second filter 123, a third filter 124, a third switch 125, and a second low noise amplifier 126, where the second power amplifier 121 is connected to a first end of the second switch 122, the second low noise amplifier 126 is connected to a second end of the second switch 122, one end of the second filter 123 is connected to a third end of the second switch 122, one end of the third filter 124 is connected to a fourth end of the second switch 122, the other end of the second filter 123 is connected to a first end of the third switch 125, and the other end of the third filter 124 is connected to a second end of the third switch 125.
The radio frequency front end module 100 is configured to implement a single-input single-output communication mode of a first signal when a first network is enabled, implement a single-input single-output communication mode of a second signal when a second network is enabled, and implement a multiple-input multiple-output communication mode of the first signal when the first network is enabled and the second network is not enabled. The first signal includes a first transmitting signal and a first receiving signal, the second signal includes a second transmitting signal and a second receiving signal, the first signal transmitted by the first network belongs to a first frequency band, the second signal transmitted by the second network when the second network is started is a second frequency band, a frequency range included in the first frequency band is a subset of a frequency range included in the second frequency band, for example, a frequency range of the first frequency band is 2400MHz-2500MHz, a frequency range of the second frequency band is 1700MHz-2700MHz, or a frequency range of the first frequency band is 2400MHz-3000MHz, 3300 MHz-4200 MHz, and a frequency range of the second frequency band is 2400MHz-5000MHz, which is not particularly limited herein.
Therefore, according to the radio frequency front end module provided by the embodiment of the application, the first signal and the second signal can be ensured to be respectively single-input and single-output through the first front end module and the second front end module, the multiple-input and multiple-output functions of the first signal are realized, no additional radio frequency front end is needed, the data transmission efficiency is improved, and meanwhile, the hardware cost and the layout area are greatly reduced.
When the first network is enabled, the first front-end module 110 is configured to process a first transmission signal from a radio-frequency transceiver and output the processed first transmission signal to a first antenna, and process a first reception signal from the first antenna and output the processed first reception signal to the radio-frequency transceiver, so as to implement a single-input single-output communication mode of the first signal.
When the second network is started, the second front-end module 120 is configured to process a second transmission signal from the radio-frequency transceiver and output the processed second transmission signal to the second antenna, and process a second reception signal from the second antenna and output the processed second reception signal to the radio-frequency transceiver, so as to implement a single-input single-output communication mode of the second signal;
when the first network is enabled and the second network is not enabled, the second front-end module 120 is configured to process the first transmission signal from the radio-frequency transceiver and output the processed first reception signal from the second antenna to the radio-frequency transceiver, so as to implement a mimo communication mode of the first signal.
Specifically, when the first network is enabled, the first transmission signal from the radio frequency transceiver may be sequentially output to the first antenna through the first power amplifier 111, the first switch 112, and the first filter 113; and outputting the first received signal from the first antenna to the radio frequency transceiver via the first filter 113, the first switch 112, and the first low noise amplifier 114 in this order.
Specifically, when the second network is enabled, the second transmission signal from the radio frequency transceiver may be sequentially output to the second antenna through the second power amplifier 121, the second switch 122, the second filter 123, and the third switch 125; and outputting the second reception signal from the second antenna to the radio frequency transceiver via the third switch 125, the second filter 123, the second switch 122, and the second low noise amplifier 126 in this order.
Specifically, when the first network is enabled and the second network is not enabled, the first transmission signal from the radio frequency transceiver may be sequentially output to the second antenna through the second power amplifier 121, the second switch 122, the third filter 124, and the third switch 125; and outputting the first received signal from the second antenna to the radio frequency transceiver via the third switch 125, the third filter 124, the second switch 122, and the second low noise amplifier 126 in this order.
The first power amplifier 111 is configured to amplify the first transmission signal, the first filter 113 is configured to filter the first transmission signal and the first reception signal, and the first low noise amplifier 114 is configured to amplify the first reception signal. The second power amplifier 121 is configured to amplify the first transmission signal and the second transmission signal, the second filter 123 is configured to filter the second transmission signal and the second reception signal, the third filter 124 is configured to filter the first transmission signal and the first reception signal, and the second low noise amplifier 126 is configured to amplify the first reception signal and the second reception signal.
It can be understood that the first power amplifier 111 is a power amplifier whose operating frequency belongs to a first frequency band, the first low noise amplifier is a low noise amplifier whose operating frequency belongs to a first frequency band, the second power amplifier 121 is a power amplifier whose operating frequency belongs to a second frequency band, and the second low noise amplifier 126 is a low noise amplifier whose operating frequency belongs to a second frequency band, and since the second frequency band covers the first frequency band, the second power amplifier can amplify the first transmit signal, and the second low noise amplifier can amplify the first receive signal.
Therefore, the narrow-band power amplifier and the narrow-band low-noise amplifier with lower cost are applied to the first front-end module, and the wide-band power amplifier and the wide-band low-noise amplifier with higher cost are applied to the second front-end module, so that the hardware cost can be saved as much as possible.
It should be noted that, in the rf front-end module 100 shown in fig. 1, the first switch 112 is an SPDT switch, one T port of the first switch 112 is connected to the first power amplifier 111, the other T port of the first switch 112 is connected to the first low noise amplifier 114, and a P port of the first switch 112 is connected to one end of the first filter 113; the second switch 122 is a DPDT switch, one T-port of the second switch 122 is connected to the second power amplifier 121, the other T-port of the second switch 122 is connected to the second low noise amplifier 126, one P-port of the second switch 122 is connected to one end of the second filter 123, and the other P-port of the second switch 122 is connected to one end of the third filter 124; the third switch 125 is an SPDT switch, one T port of the third switch 125 is connected to the other end of the second filter 123, the other T port of the third switch 125 is connected to the other end of the third filter 124, and the P port of the third switch 125 is connected to the second antenna.
Therefore, through the radio frequency front end module, the data transmission efficiency can be improved, and meanwhile, the hardware cost and the layout area can be greatly reduced.
For ease of understanding, an rf front-end module in the embodiment of the present application is described below with reference to fig. 2, where fig. 2 is a schematic diagram of an architecture of another rf front-end module provided in the embodiment of the present application, and it should be noted that the rf front-end module is suitable for wifi 2.4G signals (with a frequency range of 2400MHz-2500 MHz) and cellular signals (with a frequency range of 1700MHz-2700 MHz), and includes a wifi front-end module 210 and a cellular front-end module 220, where the wifi front-end module 210 includes a wifi power amplifier 211, an SPDT switch 212, a wifi filter 213, a wifi low noise amplifier 214, and the cellular front-end module 220 includes a cellular power amplifier 221, a DPDT switch 222, a cellular filter 223, a wifi filter 224, an SPDT switch 225, and a cellular low noise amplifier 226.
The power amplifier 211 for wifi, the SPDT switch 212, the filter 213 for wifi constitute a first wifi signal transmitting link, that is, a wifi transmitting signal from the radio frequency transceiver is amplified by the power amplifier 211 for wifi, filtered by the filter 213 for wifi by the SPDT switch 212 and then output to a wifi antenna.
The filter 213 for wifi, the SPDT switch 212, the low noise amplifier 214 for wifi constitute a first wifi signal receiving link, that is, a wifi receiving signal from a wifi antenna is filtered by the filter 213 for wifi, amplified by the SPDT switch 212 and output to the radio frequency transceiver for demodulation.
The cellular power amplifier 221, the DPDT switch 222, the cellular filter 223, and the SPDT switch 225 form a cellular signal transmitting link, that is, a cellular transmitting signal from the radio frequency transceiver is amplified by the cellular power amplifier 221, filtered by the DPDT switch 222, filtered by the cellular filter 223, and output to the cellular antenna by the SPDT switch 225.
The SPDT switch 225, the cellular filter 223, the DPDT switch 222, and the cellular low noise amplifier 226 form a cellular signal receiving link, that is, a cellular receiving signal from a cellular antenna is filtered by the SPDT switch 225, filtered by the cellular filter 223, amplified by the DPDT switch 222, and output to a radio frequency transceiver for demodulation.
The power amplifier 221 for cellular, the DPDT switch 222, the filter 224 for wifi, and the SPDT switch 225 form a second wifi signal transmitting link, that is, a wifi transmitting signal from the radio frequency transceiver is amplified by the power amplifier 221 for cellular, filtered by the filter 224 for wifi by the DPDT switch 222, and output to the cellular antenna by the SPDT switch 225.
The SPDT switch 225, the filter 224 for wifi, the DPDT switch 222, and the low noise amplifier 226 for cellular form a second wifi signal receiving link, that is, the cellular receiving signal from the cellular antenna is filtered by the SPDT switch 225, the filter 224 for wifi, the DPDT switch 222, and amplified by the low noise amplifier 226 for cellular, and then output to the radio frequency transceiver for demodulation.
It can be understood that when the wifi network is started, the first wifi signal transmitting link and the first wifi signal receiving link work normally, so that a single-in single-out mode of wifi signals is realized; when the cellular network is started, the cellular signal transmitting link and the cellular signal receiving link work normally, so that a single-input single-output mode of the cellular signal is realized; when the wifi network is started and the cellular network is not started, the first wifi signal transmitting link, the first wifi signal receiving link, the second wifi signal transmitting link and the second wifi signal receiving link work normally, and a multiple-input multiple-output mode of the wifi signal is achieved.
Therefore, the radio frequency front end module improves the transmission rate of wifi signals through the multiple-input multiple-output mode without adding additional wifi radio frequency modules, and hardware cost and layout area are greatly saved.
It may be appreciated that the radio frequency front end module in this embodiment of the present application is applicable to any frequency band of signals conforming to the rules of the first frequency band and the second frequency band, such as bluetooth signals and cellular signals, cellular signals and wifi6 signals, and when adapting to different first signals and second signals, the first power amplifier, the first filter, the first low noise amplifier, the second power amplifier, the second filter, the third filter and the second low noise amplifier need to be adaptively adjusted, which is not described herein again.
Next, another rf front-end module in the embodiment of the present application will be described with reference to fig. 3, and fig. 3 is a schematic structural diagram of another rf front-end module provided in the embodiment of the present application, where the rf front-end module 300 includes a first front-end module 310 and a second front-end module 320.
The first front-end module 310 includes a first power amplifier 311, a first switch 312, a first filter 313, a first low noise amplifier 314, a fourth switch 315, and a fourth filter 316, where the first power amplifier 311 is connected to a first end of the first switch 312, the first low noise amplifier 314 is connected to a second end of the first switch, one end of the first filter 313 is connected to a third end of the first switch 312, one end of the fourth filter 316 is connected to a fourth end of the first switch 312, the other end of the fourth filter 316 is connected to a first end of the fourth switch 315, and the second end of the fourth switch 315 is connected to the other end of the first filter 313.
The second front-end module 320 may include a second power amplifier 321, a second switch 322, a second filter 323, a third filter 324, a third switch 325, and a second low noise amplifier 326, where the second power amplifier 321 is connected to a first end of the second switch 322, the second low noise amplifier 326 is connected to a second end of the second switch 322, one end of the second filter 323 is connected to a third end of the second switch 322, one end of the third filter 324 is connected to a fourth end of the second switch 322, the other end of the second filter 323 is connected to a first end of the third switch 325, and the other end of the third filter 324 is connected to a second end of the third switch 325.
The radio frequency front end module 300 provided in this embodiment not only can realize a single-input single-output communication mode of a first signal when a first network is started, but also can realize a single-input single-output communication mode of a second signal when a second network is started, and can realize a multiple-input multiple-output communication mode of the first signal when the first network is started and the second network is not started, and can also realize a multiple-input multiple-output communication mode of the second signal when the first network is not started and the second network is started. The first signal and the second signal refer to the related descriptions in fig. 1, and are not described herein.
Therefore, according to the radio frequency front end module provided by the embodiment of the application, the first signal and the second signal can be ensured to be respectively single-input and single-output through the first front end module and the second front end module, the multiple-input and multiple-output function of the first signal or the multiple-input and multiple-output function of the second signal can be realized, the additional radio frequency front end is not required to be added, the data transmission efficiency is improved, and meanwhile, the hardware cost and the layout area are greatly reduced.
When the first network is enabled, the first front-end module 310 is configured to process a first transmission signal from a radio-frequency transceiver and output the processed first transmission signal to a first antenna, and process a first reception signal from the first antenna and output the processed first reception signal to the radio-frequency transceiver, so as to implement a single-input single-output communication mode of the first signal.
When the second network is started, the second front-end module 320 is configured to process a second transmission signal from the radio-frequency transceiver and output the processed second transmission signal to the second antenna, and process a second reception signal from the second antenna and output the processed second reception signal to the radio-frequency transceiver, so as to implement a single-input single-output communication mode of the second signal;
when the first network is enabled and the second network is not enabled, the second front-end module 320 is configured to process the first transmission signal from the radio-frequency transceiver and output the processed first reception signal from the second antenna to the radio-frequency transceiver, so as to implement a mimo communication mode of the first signal.
When the first network is not enabled and the second network is enabled, the first front-end module 310 is further configured to process the second transmission signal from the radio-frequency transceiver and output the processed second reception signal from the first antenna to the radio-frequency transceiver, so as to implement a mimo communication mode of the second signal.
Specifically, when the first network is enabled, the first transmission signal from the radio frequency transceiver is output to the first antenna through a first power amplifier 311, a first switch 312, a first filter 313, and a fourth switch 315; and outputting the first reception signal from the first antenna to the radio frequency transceiver via the fourth switch 315, the first filter 313, the first switch 312, and a first low noise amplifier 314.
Specifically, when the second network is enabled, the second transmission signal from the radio frequency transceiver is sequentially output to the second antenna through the second power amplifier 321, the second switch 322, the second filter 323, and the third switch 325; and outputting the second reception signal from the second antenna to the radio frequency transceiver through the third switch 325, the second filter 323, the second switch 322, and the second low noise amplifier 326 in this order.
Specifically, when the first network is enabled and the second network is not enabled, the first transmission signal from the radio frequency transceiver is sequentially output to the second antenna through the second power amplifier 321, the second switch 322, the third filter 324, and the third switch 325; and outputting the first received signal from the second antenna to the radio frequency transceiver via the third switch 325, the third filter 324, the second switch 322, and the second low noise amplifier 326 in this order.
Specifically, when the first network is not enabled and the second network is enabled, the second transmission signal from the radio frequency transceiver is sequentially output to the first antenna through the first power amplifier 311, the first switch 312, the fourth filter 316, and the fourth switch 315; and outputting the second received signal from the first antenna to the radio frequency transceiver via the fourth switch 315, the fourth filter 316, the first switch 312, and the first low noise amplifier 314 in this order.
The first power amplifier 311 is configured to amplify the first transmission signal and the second transmission signal, the first filter 313 is configured to filter the first transmission signal and the first reception signal, the fourth filter 316 is configured to filter the second transmission signal and the second reception signal, and the first low noise amplifier 314 is configured to amplify the first reception signal and the second reception signal. The second power amplifier 321 is configured to amplify the first transmission signal and the second transmission signal, the second filter 323 is configured to filter the second transmission signal and the second reception signal, the third filter 324 is configured to filter the first transmission signal and the first reception signal, and the second low noise amplifier 326 is configured to amplify the first reception signal and the second reception signal.
It can be understood that the first power amplifier 311 is a power amplifier whose operating frequency belongs to the second frequency band, and the first low noise amplifier 314 is a low noise amplifier whose operating frequency belongs to the second frequency band, and since the second frequency band covers the first frequency band, the first power amplifier can amplify the first transmit signal, and the first low noise amplifier can amplify the first receive signal. Similarly, the second power amplifier 321 is a power amplifier whose operating frequency belongs to the second frequency band, and the second low noise amplifier 326 is a low noise amplifier whose operating frequency belongs to the second frequency band, and since the second frequency band covers the first frequency band, the second power amplifier can amplify the first transmit signal, and the second low noise amplifier can amplify the first receive signal.
Therefore, the high-cost wide-band power amplifier and the high-frequency-band low-noise amplifier are applied to the first front-end module and the second front-end module, so that the first signal or the second signal can realize the multiple-input multiple-output function, the data transmission efficiency is improved, and the hardware cost and the layout area are reduced.
It should be noted that, in the rf front-end module 300 shown in fig. 3, the first switch 312 is a DPDT switch, one T port of the first switch 312 is connected to the first power amplifier 311, the other T port of the first switch 312 is connected to the first low noise amplifier 314, one P port of the first switch 312 is connected to one end of the first filter 313, and the other P port of the first switch 312 is connected to one end of the fourth filter 316; the second switch 322 is a DPDT switch, one T port of the second switch 322 is connected to the second power amplifier 321, the other T port of the second switch 322 is connected to the second low noise amplifier 326, one P port of the second switch 322 is connected to one end of the second filter 323, and the other P port of the second switch 322 is connected to one end of the third filter 324; the third switch 325 is an SPDT switch, one T-port of the third switch 325 is connected to the other end of the second filter 323, the other T-port of the third switch 325 is connected to the other end of the third filter 324, and the P-port of the third switch 325 is connected to the second antenna; the fourth switch 315 is an SPDT switch, one T port of the fourth switch 315 is connected to the other end of the first filter 313, the other T port of the fourth switch 315 is connected to the other end of the fourth filter 316, and the P port of the fourth switch 315 is connected to the first antenna.
Therefore, through the radio frequency front end module, the data transmission efficiency can be improved, and meanwhile, the hardware cost and the layout area can be greatly reduced.
For ease of understanding, an exemplary explanation of another rf front-end module in the embodiment of the present application is described below with reference to fig. 4, and fig. 4 is a schematic diagram of an architecture of another rf front-end module provided in the embodiment of the present application, where it needs to be described that the rf front-end module is suitable for wifi6 signals (with a frequency range of 2400MHz-5000 MHz) and bluetooth signals (with a frequency range of 2400MHz-2483.5 MHz), and includes a wifi6 front-end module 410 and a bluetooth front-end module 420, where the wifi6 front-end module 410 includes a wifi6 power amplifier 411, a DPDT switch 412, a wifi6 filter 413, a bluetooth filter 414, an SPDT switch 415, a wifi6 low noise amplifier 416, and the bluetooth front-end module 420 includes a wifi6 power amplifier 421, a DPDT switch 422, a wifi6 filter 423, a bluetooth filter 424, an SPDT switch 425, and a wifi6 low noise amplifier 426.
The wifi6 power amplifier 411, the DPDT switch 412, the filter 413 for wifi6, and the SPDT switch 415 form a first wifi6 signal transmitting link, that is, a wifi6 transmitting signal from the radio frequency transceiver is amplified by the wifi6 power amplifier 411, filtered by the DPDT switch 412 and the filter 413 for wifi6, and output to the wifi6 antenna through the SPDT switch 415.
The SPDT switch 415, the filter 413 for wifi 6, the DPDT switch 412, and the low noise amplifier 416 for wifi 6 form a first wifi 6 signal receiving link, that is, a wifi 6 receiving signal from a wifi 6 antenna is filtered by the SPDT switch 415 and the filter 413 for wifi 6, amplified by the low noise amplifier 416 for wifi 6 by the DPDT switch 412, and then output to the radio frequency transceiver for demodulation.
The wifi 6 power amplifier 411, the DPDT switch 412, the bluetooth filter 414, and the SPDT switch 415 form a second bluetooth signal transmitting link, that is, a bluetooth transmitting signal from the radio frequency transceiver is amplified by the wifi 6 power amplifier 411, filtered by the bluetooth filter 414 by the DPDT switch 412, and output to the wifi 6 antenna by the SPDT switch 415.
The SPDT switch 415, the bluetooth filter 414, the DPDT switch 412, and the wifi 6 low noise amplifier 416 form a second bluetooth signal receiving link, that is, a bluetooth receiving signal from the wifi 6 antenna is filtered by the SPDT switch 415, filtered by the bluetooth filter 414, amplified by the wifi 6 low noise amplifier 416 by the DPDT switch 412, and output to the radio frequency transceiver for demodulation.
The wifi 6 power amplifier 421, the DPDT switch 422, the bluetooth filter 424, and the SPDT switch 425 form a first bluetooth signal transmitting link, that is, a bluetooth transmitting signal from the radio frequency transceiver is amplified by the wifi 6 power amplifier 421, filtered by the bluetooth filter 424 by the DPDT switch 422, and output to the bluetooth antenna by the SPDT switch 415.
The SPDT switch 425, the bluetooth filter 424, the DPDT switch 422, and the wifi6 form a first bluetooth signal receiving link with a low noise amplifier 426, that is, a bluetooth receiving signal from a bluetooth antenna is filtered by the SPDT switch 425, the bluetooth filter 424, the DPDT switch 422, and the wifi6 is amplified by the low noise amplifier 426 and then output to a radio frequency transceiver for demodulation.
The wifi6 power amplifier 421, the DPDT switch 422, the filter 423 for wifi6, and the SPDT switch 425 form a second wifi6 signal transmitting link, that is, a wifi6 transmitting signal from the radio frequency transceiver is amplified by the wifi6 power amplifier 421, filtered by the DPDT switch 422 and the filter 423 for wifi6, and output to the bluetooth antenna through the SPDT switch 425.
The SPDT switch 425, the filter 423 for wifi6, the DPDT switch 422, and the low noise amplifier 426 for wifi6 form a second wifi6 signal receiving link, that is, a wifi6 receiving signal from a bluetooth antenna is filtered by the SPDT switch 425 and the filter 423 for wifi6, amplified by the DPDT switch 422 and then output to the radio frequency transceiver for demodulation by the low noise amplifier 426 for wifi 6.
It can be understood that when the wifi6 network is started, the first wifi6 signal transmitting link and the first wifi6 signal receiving link work normally, so that a single-in single-out mode of the wifi6 signal is realized; when the Bluetooth network is started, the first Bluetooth signal transmitting link and the first Bluetooth signal receiving link work normally, so that a single-input single-output mode of Bluetooth signals is realized; when the wifi6 network is started and the Bluetooth network is not started, the first wifi6 signal transmitting link, the first wifi6 signal receiving link, the second wifi6 signal transmitting link and the second wifi6 signal receiving link work normally, and a multiple-input multiple-output mode of wifi6 signals is realized; when the wifi6 network is not started and the Bluetooth network is started, the first Bluetooth signal transmitting link, the first Bluetooth signal receiving link, the second Bluetooth signal transmitting link and the second Bluetooth signal receiving link work normally, and a Bluetooth signal multiple-input multiple-output mode is realized.
Therefore, the radio frequency front end module does not need to be additionally provided with an additional wifi radio frequency module and an additional Bluetooth radio frequency module when the transmission rate of the wifi6 signal is improved through the multi-input multi-output mode or the transmission rate of the Bluetooth signal is improved through the multi-input multi-output mode, and hardware cost and layout area are greatly saved.
It may be appreciated that the radio frequency front end module in this embodiment of the present application is applicable to any frequency band of signals conforming to the rules of the first frequency band and the second frequency band, such as bluetooth signals and cellular signals, cellular signals and wifi6 signals, and when adapting to different first signals and second signals, the first power amplifier, the first filter, the first low noise amplifier, the second power amplifier, the second filter, the third filter and the second low noise amplifier need to be adaptively adjusted, which is not described herein again.
An rf system according to an embodiment of the present application is described below with reference to fig. 5, and fig. 5 is a schematic architecture diagram of an rf system according to an embodiment of the present application, where the rf system 500 includes:
the radio frequency transceiver 510 is connected to the radio frequency front end module 100, and is configured to transmit a first transmit signal, a first receive signal, a second transmit signal, and a second receive signal;
A first antenna 520 connected to the first front-end module 110;
a second antenna 530 connected to the second front-end module 120;
the rf system 500 is configured to implement a multiple-input multiple-output function of the first transmit signal and the first receive signal through the rf front-end module 100.
Specifically, the first transmitting end 511 of the radio frequency transceiver 510 is connected to the first power amplifier 111, the first receiving end 512 is connected to the first low noise amplifier 114, the second transmitting end 513 is connected to the second power amplifier 121, the second receiving end 214 is connected to the second low noise amplifier 126, the first antenna 520 is connected to the other end of the first filter 113, and the second antenna 530 is connected to the third end of the third switch 125.
The radio frequency system 500 is configured to implement a single-input single-output communication mode of a first signal through the first front end module 110 when the first network is enabled, implement a single-input single-output communication mode of a second signal through the second front end module 120 when the second network is enabled, and implement a multiple-input multiple-output communication mode of the first signal through the first front end module 110 and the second front end module 120 when the first network is enabled and the second network is not enabled.
Therefore, through the radio frequency system, the data transmission efficiency is improved, and meanwhile, the hardware cost and the layout area are reduced.
The above signal transmission manner, which is not described in detail, may be referred to the description in fig. 1, and will not be described herein.
Referring to fig. 6, fig. 6 is a schematic diagram of an architecture of another rf system according to an embodiment of the present application, where the rf system 600 includes:
the radio frequency transceiver 610 is connected to the radio frequency front end module 300 and is configured to transmit a first transmission signal, a first reception signal, a second transmission signal, and a second reception signal;
a first antenna 620 connected to the first front end module 310;
a second antenna 630 connected to the second front end module 320;
the rf system 500 is configured to implement a multiple-input multiple-output function of the first transmit signal and the first receive signal through the rf front-end module 300; or, the rf front-end module 300 is configured to implement a multiple-input multiple-output function of the second transmit signal and the second receive signal.
Specifically, the first transmitting end 611 of the radio frequency transceiver 610 is connected to the first power amplifier 311, the first receiving end 612 is connected to the first low noise amplifier 314, the second transmitting end 613 is connected to the second power amplifier 321, the second receiving end 314 is connected to the second low noise amplifier 326, the first antenna 620 is connected to the third end of the fourth switch 315, and the second antenna 630 is connected to the third end of the third switch 325.
The radio frequency system 600 is configured to implement a single-input single-output communication mode of a first signal through the first front end module 310 when the first network is enabled, implement a single-input single-output communication mode of a second signal through the second front end module 320 when the second network is enabled, and implement a multiple-input multiple-output communication mode of the first signal through the first front end module 310 and the second front end module 320 when the first network is enabled and the second network is not enabled; the mimo communication mode of the second signal is implemented through the first front end module 310 and the second front end module 320 when the first network is not enabled and the second network is enabled.
Therefore, through the radio frequency system, the data transmission efficiency is improved, and meanwhile, the hardware cost and the layout area are reduced.
The above signal transmission manner, which is not described in detail, may be referred to the description in fig. 3, and will not be described herein.
A communication device according to an embodiment of the present application will be described below with reference to fig. 7, and fig. 7 is a schematic structural diagram of a communication device provided in an embodiment of the present application, where the communication device 700 includes:
a radio frequency system 500 as described in fig. 5.
As can be seen, the communication device 700 may detect an enabled state of a current network, and implement a single-in single-out communication mode of the first signal through the radio frequency system 500 when the first network is enabled; when the second network is started, a single-input single-output communication mode of the second signal is realized through the radio frequency system 500; the mimo communication mode of the first signal is implemented by the rf system 500 when the first network is enabled and the second network is not enabled.
Specifically, as shown in fig. 8, fig. 8 is a flow chart of a communication method provided in an embodiment of the present application, which is applied to the communication device shown in fig. 7, and specifically includes the following steps:
Step 802, when the first network is started, controlling the first front-end module to transmit a first signal so as to realize a single-input single-output communication mode of the first signal.
The control here may be to control the first switch, the second switch, and the third switch to switch the corresponding signal paths to implement corresponding functions, which are not described herein. Therefore, the hardware cost and the layout area are reduced while the data transmission efficiency is improved.
Another communication device in the present application will be described with reference to fig. 9, and fig. 9 is a schematic structural diagram of a communication device provided in an embodiment of the present application, where the communication device 900 includes:
A radio frequency system 600 as described in fig. 6.
As can be seen, the communication device 900 may detect the enabled state of the current network, and implement a single-in single-out communication mode of the first signal through the radio frequency system 600 when the first network is enabled; when the second network is started, a single-input single-output communication mode of the second signal is realized through the radio frequency system 600; implementing a multiple-input multiple-output (mimo) communication mode of the first signal through the radio frequency system 600 when the first network is enabled and the second network is not enabled; the mimo communication mode of the second signal is implemented by the rf system 600 when the first network is not enabled and the second network is enabled.
Specifically, as shown in fig. 10, fig. 10 is a flow chart of another communication method provided in the embodiment of the present application, and specifically includes the following steps:
The control here may be to control the first switch, the second switch, the third switch, and the fourth switch to switch corresponding signal paths to implement corresponding functions, which are not described herein. Therefore, the data transmission efficiency is improved, the hardware cost and the layout area are reduced, and the user experience is better. As shown in fig. 11, further taking a communication device as an example of a mobile phone 1100, specifically, as shown in fig. 11, the mobile phone 1100 includes a processor 1110, a memory 1120, a communication interface 1130, a radio frequency system 1140, and one or more programs 1121, where the one or more programs 1121 are stored in the memory 1120 and configured to be executed by the processor 1110, and the one or more programs 1121 include instructions for executing any steps in the following method embodiments.
The communication interface 1130 includes an internal interface including a radio frequency interface, a camera interface, a display screen interface, a microphone interface, and the like, and an external interface including a CAN interface, an RS232 interface, an RS485 interface, an I2C interface, and the like. The processor 1110 is connected to the rf system 1140 through the internal interface, and the handset is configured to communicate with other electronic devices through an external interface.
The processor 1110 may be an Application processor or controller, such as a central processing unit (Central Processing Unit, CPU), a general purpose processor, a digital signal processor (Digital Signal Processor, DSP), an Application-specific integrated circuit (ASIC), a field programmable gate array (Field Programmable Gate Array, FPGA) or other programmable logic device, a transistor logic device, a hardware component, or any combination thereof. Which may implement or perform the various exemplary logic blocks, units and circuits described in connection with this disclosure. The processor 1110 may also be a combination that implements computing functionality, such as a combination comprising one or more microprocessors, a combination of a DSP and a microprocessor, and the like.
Memory 1120 is used to store program codes and data for the cell phone. The memory 1120 may be volatile memory or nonvolatile memory, or may include both volatile and nonvolatile memory. The nonvolatile memory may be a read-only memory (ROM), a Programmable ROM (PROM), an Erasable PROM (EPROM), an electrically Erasable EPROM (EEPROM), or a flash memory. The volatile memory may be random access memory (random access memory, RAM) which acts as an external cache. By way of example but not limitation, many forms of random access memory (random access memory, RAM) are available, such as Static RAM (SRAM), dynamic Random Access Memory (DRAM), synchronous Dynamic Random Access Memory (SDRAM), double data rate synchronous dynamic random access memory (DDR SDRAM), enhanced Synchronous Dynamic Random Access Memory (ESDRAM), synchronous Link DRAM (SLDRAM), and direct memory bus RAM (DR RAM).
The rf system 1140 may be any of the rf systems described above.
The communication device 1100 may detect an enabling state of the first network and an enabling state of the second network, and when the first network is enabled, control a related link in the radio frequency system 1140 to implement a single-input single-output communication mode of the first signal; when the second network is started, controlling the related link in the radio frequency system 1140 to realize a single-input single-output communication mode of the second signal; when the first network is enabled and the second network is not enabled, controlling related links in the radio frequency system 1140 to implement a multiple-input multiple-output (mimo) communication mode of the first signal; when the first network is not enabled and the second network is enabled, the associated link in the control rf system 1140 implements a multiple-input multiple-output (mimo) communication mode for the second signal. And the hardware cost and the layout area are reduced while the data transmission efficiency is improved.
It can be understood that "Single In Single Out" In the embodiments of the present application is a SISO (Single-Input Single-Output) system that is conventional In the communication field, and "Multiple In Multiple Out" is a MIMO (Multiple-In Multiple-Out) system that is conventional In the communication field, which is not described herein In detail.
The foregoing examples represent only a few embodiments of the present application, which are described in more detail and are not thereby to be construed as limiting the scope of the present application. It should be noted that it would be apparent to those skilled in the art that various modifications and improvements could be made without departing from the spirit of the present application, which would be within the scope of the present application. Accordingly, the scope of protection of the present application is to be determined by the claims appended hereto.
Claims (13)
1. The utility model provides a radio frequency front end module, its characterized in that, radio frequency front end module includes:
the first front-end module comprises a first power amplifier, a first switch, a first filter and a first low noise amplifier, wherein the first switch is respectively connected with the first power amplifier, the first filter and the first low noise amplifier, and is used for transmitting signals through the first power amplifier, the first switch and the first filter and receiving signals through the first filter, the first switch and the first low noise amplifier;
a second front end module including a second power amplifier, a second switch, a second filter, a third switch, and a second low noise amplifier, the second switch being connected to one end of the second power amplifier, the second filter, the third filter, and one end of the second low noise amplifier, respectively, the third switch being connected to the other end of the second filter and the other end of the third filter, respectively, the second front end module being configured to transmit signals through the second power amplifier, the second switch, the second filter/the third filter, the third switch, and to receive signals through the third switch, the second filter/the third filter, the second switch, the second low noise amplifier;
The radio frequency front end module is used for realizing a single-input single-output communication mode of a first signal through the first front end module when a first network is started, realizing a single-input single-output communication mode of a second signal through the second front end module when a second network is started, and realizing a multiple-input multiple-output communication mode of the first signal through the first front end module and the second front end module when the first network is started and the second network is not started.
2. The radio frequency front end module of claim 1, wherein the first signal comprises a first transmit signal and a first receive signal, the second signal comprises a second transmit signal and a second receive signal, the first transmit signal and the first receive signal are signals of a first frequency band, the second transmit signal and the second receive signal are signals of a second frequency band, and the first frequency band comprises a frequency range that is a subset of the frequency range that the second frequency band comprises;
when the first network is started, the first front-end module is used for outputting a first transmission signal from a radio frequency transceiver to a first antenna after being processed, and outputting a first receiving signal from the first antenna to the radio frequency transceiver after being processed so as to realize a single-input single-output communication mode of the first signal;
When the second network is started, the second front-end module is used for outputting a second transmitting signal from the radio frequency transceiver to a second antenna after processing, and outputting a second receiving signal from the second antenna to the radio frequency transceiver after processing so as to realize a single-input single-output communication mode of the second signal;
when the first network is enabled and the second network is not enabled, the second front-end module is configured to process the first transmission signal from the radio frequency transceiver and output the processed first reception signal from the second antenna to the radio frequency transceiver, so as to implement a mimo communication mode of the first signal.
3. The radio frequency front end module of claim 2, wherein,
outputting the first transmission signal from the radio frequency transceiver to the first antenna through the first power amplifier, the first switch and the first filter in sequence when the first network is started; and outputting the first received signal from the first antenna to the radio frequency transceiver via the first filter, the first switch, and the first low noise amplifier in this order;
Outputting the second transmission signal from the radio frequency transceiver to the second antenna through the second power amplifier, the second switch, the second filter and the third switch in sequence when the second network is started; and outputting the second reception signal from the second antenna to the radio frequency transceiver via the third switch, the second filter, the second switch, and the second low noise amplifier in this order;
outputting the first transmit signal from the radio frequency transceiver to the second antenna via the second power amplifier, the second switch, the third filter, the third switch in sequence when the first network is enabled and the second network is not enabled; and outputting the first received signal from the second antenna to the radio frequency transceiver via the third switch, the third filter, the second switch, and the second low noise amplifier in this order.
4. The RF front-end module as recited in claim 3, wherein,
the first switch is an SPDT switch, one T port of the first switch is connected with the first power amplifier, the other T port of the first switch is connected with the first low noise amplifier, and the P port of the first switch is connected with one end of the first filter;
The second switch is a DPDT switch, one T port of the second switch is connected with the second power amplifier, the other T port of the second switch is connected with the second low noise amplifier, one P port of the second switch is connected with one end of the second filter, and the other P port of the second switch is connected with one end of the third filter;
the third switch is an SPDT switch, one T port of the third switch is connected with the other end of the second filter, the other T port of the third switch is connected with the other end of the third filter, and the P port of the third switch is connected with the second antenna.
5. The RF front-end module as recited in claim 4, wherein,
the first power amplifier is used for amplifying the first transmission signal, the first filter is used for filtering the first transmission signal and the first receiving signal, and the first low-noise amplifier is used for amplifying the first receiving signal;
the second power amplifier is used for amplifying the first transmitting signal and the second transmitting signal, the second filter is used for filtering the second transmitting signal and the second receiving signal, the third filter is used for filtering the first transmitting signal and the first receiving signal, and the second low-noise amplifier is used for amplifying the first receiving signal and the second receiving signal.
6. The radio frequency front end module according to any of claims 2-5, wherein,
the first front-end module further comprises a fourth switch and a fourth filter, the first switch is further connected with one end of the fourth filter, the other end of the fourth filter is connected with the first end of the fourth switch, and the second end of the fourth switch is further connected with the first filter;
the radio frequency front end module is further configured to implement a mimo communication mode of the second signal through the first front end module and the second front end module when the first network is not enabled and the second network is enabled.
7. The RF front-end module as recited in claim 6, wherein,
when the first network is not enabled and the second network is enabled, the first front-end module is further configured to process the second transmission signal from the radio frequency transceiver and output the processed second reception signal from the first antenna to the first antenna, and output the processed second reception signal from the first antenna to the radio frequency transceiver, so as to implement a mimo communication mode of the second signal.
8. The RF front-end module as recited in claim 7, wherein,
Outputting the first transmission signal from the radio frequency transceiver to the first antenna through a first power amplifier, a first switch, a first filter, and a fourth switch when the first network is enabled; and outputting the first received signal from the first antenna to the radio frequency transceiver via the fourth switch, the first filter, the first switch, a first low noise amplifier;
outputting the second transmission signal from the radio frequency transceiver to the second antenna through the second power amplifier, the second switch, the second filter and the third switch in sequence when the second network is started; and outputting the second reception signal from the second antenna to the radio frequency transceiver via the third switch, the second filter, the second switch, and the second low noise amplifier in this order;
outputting the first transmit signal from the radio frequency transceiver to the second antenna via the second power amplifier, the second switch, the third filter, the third switch in sequence when the first network is enabled and the second network is not enabled; and outputting the first received signal from the second antenna to the radio frequency transceiver via the third switch, the third filter, the second switch, and the second low noise amplifier in this order;
Outputting the second transmit signal from the radio frequency transceiver to the first antenna via the first power amplifier, the first switch, the fourth filter, the fourth switch in sequence when the first network is not enabled and the second network is enabled; and outputting the second received signal from the first antenna to the radio frequency transceiver via the fourth switch, the fourth filter, the first switch, and the first low noise amplifier in sequence.
9. The RF front-end module as recited in claim 8, wherein,
the first switch is a DPDT switch, one T port of the first switch is connected with the first power amplifier, the other T port of the first switch is connected with the first low noise amplifier, one P port of the first switch is connected with one end of the first filter, and the other P port of the first switch is connected with one end of the fourth filter;
the second switch is a DPDT switch, one T port of the second switch is connected with the second power amplifier, the other T port of the second switch is connected with the second low noise amplifier, one P port of the second switch is connected with one end of the second filter, and the other P port of the second switch is connected with one end of the third filter;
The third switch is an SPDT switch, one T port of the third switch is connected with the other end of the second filter, the other T port of the third switch is connected with the other end of the third filter, and the P port of the third switch is connected with the second antenna;
the fourth switch is an SPDT switch, one T port of the fourth switch is connected with the other end of the first filter, the other T port of the fourth switch is connected with the other end of the fourth filter, and the P port of the fourth switch is connected with the first antenna.
10. The RF front-end module as recited in claim 9, wherein,
the first power amplifier is used for amplifying the first transmitting signal and the second transmitting signal, the first filter is used for filtering the first transmitting signal and the first receiving signal, the fourth filter is used for filtering the second transmitting signal and the second receiving signal, and the first low-noise amplifier is used for amplifying the first receiving signal and the second receiving signal;
the second power amplifier is used for amplifying the first transmitting signal and the second transmitting signal, the second filter is used for filtering the second transmitting signal and the second receiving signal, the third filter is used for filtering the first transmitting signal and the first receiving signal, and the second low-noise amplifier is used for amplifying the first receiving signal and the second receiving signal.
11. A radio frequency system, comprising:
the radio frequency front end module of any of claims 1-10;
the radio frequency transceiver is connected with the radio frequency front end module and is used for transmitting a first transmitting signal, a first receiving signal, a second transmitting signal and a second receiving signal;
the first antenna is connected with the first front-end module;
the second antenna is connected with the second front-end module;
the radio frequency system is used for realizing the multiple-input multiple-output function of a first transmitting signal and a first receiving signal through the radio frequency front end module; or, the multi-input multi-output function of the second transmitting signal and the second receiving signal is realized through the radio frequency front end module.
12. A communication device, comprising:
the radio frequency system of claim 11.
13. A communication method applied to the communication device of claim 12, the method comprising:
detecting the starting state of the current network;
when a first network is started, controlling a first front-end module to transmit a first signal so as to realize a single-input single-output communication mode of the first signal;
when the second network is started, controlling the second front-end module to transmit a second signal so as to realize a single-input single-output communication mode of the second signal;
And when the first network is started and the second network is not started, controlling the first front-end module and the second front-end module to simultaneously transmit the first signal so as to realize a multiple-input multiple-output communication mode of the first signal.
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