CN115118297B - Radio frequency front end module, radio frequency receiving and transmitting system and communication equipment - Google Patents
Radio frequency front end module, radio frequency receiving and transmitting system and communication equipment Download PDFInfo
- Publication number
- CN115118297B CN115118297B CN202110292724.8A CN202110292724A CN115118297B CN 115118297 B CN115118297 B CN 115118297B CN 202110292724 A CN202110292724 A CN 202110292724A CN 115118297 B CN115118297 B CN 115118297B
- Authority
- CN
- China
- Prior art keywords
- radio frequency
- signal
- antenna
- receiving
- switch
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 238000004891 communication Methods 0.000 title claims abstract description 24
- 238000012545 processing Methods 0.000 claims abstract description 15
- 230000008054 signal transmission Effects 0.000 claims description 22
- 230000005540 biological transmission Effects 0.000 claims description 21
- 238000001914 filtration Methods 0.000 claims description 3
- 238000010586 diagram Methods 0.000 description 14
- 102100032533 ADP/ATP translocase 1 Human genes 0.000 description 12
- 101000768061 Escherichia phage P1 Antirepressor protein 1 Proteins 0.000 description 11
- 101000796932 Homo sapiens ADP/ATP translocase 1 Proteins 0.000 description 11
- 102100026397 ADP/ATP translocase 3 Human genes 0.000 description 8
- 230000010354 integration Effects 0.000 description 8
- 102100026400 ADP/ATP translocase 4 Human genes 0.000 description 7
- 101000718447 Homo sapiens ADP/ATP translocase 4 Proteins 0.000 description 7
- 101100476574 Staphylococcus aureus (strain N315) ant5 gene Proteins 0.000 description 7
- 102100026396 ADP/ATP translocase 2 Human genes 0.000 description 6
- 101000718417 Homo sapiens ADP/ATP translocase 2 Proteins 0.000 description 6
- 101000718437 Homo sapiens ADP/ATP translocase 3 Proteins 0.000 description 6
- 101710102715 ADP/ATP translocase 3 Proteins 0.000 description 2
- 238000007796 conventional method Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 101710148586 ADP,ATP carrier protein 1 Proteins 0.000 description 1
- 101710111394 ADP,ATP carrier protein 1, mitochondrial Proteins 0.000 description 1
- 101710148588 ADP,ATP carrier protein 2 Proteins 0.000 description 1
- 101710165307 ADP,ATP carrier protein 2, mitochondrial Proteins 0.000 description 1
- 101710102716 ADP/ATP translocase 1 Proteins 0.000 description 1
- 101710102718 ADP/ATP translocase 2 Proteins 0.000 description 1
- 241001522296 Erithacus rubecula Species 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 238000010295 mobile communication Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000005404 monopole Effects 0.000 description 1
- 238000004806 packaging method and process Methods 0.000 description 1
- 239000000523 sample Substances 0.000 description 1
- 238000001228 spectrum Methods 0.000 description 1
Classifications
-
- 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
- H04B1/38—Transceivers, i.e. devices in which transmitter and receiver form a structural unit and in which at least one part is used for functions of transmitting and receiving
- H04B1/40—Circuits
Abstract
The embodiment of the application relates to a radio frequency front-end module, a radio frequency receiving and transmitting system and communication equipment, wherein the radio frequency front-end module comprises: the receiving and transmitting circuit is respectively connected with the input port and a receiving port and is used for selecting and supporting the receiving processing of the first radio frequency signals received by the antenna port and transmitting the first radio frequency signals received by the input port to the antenna port for transmitting; the receiving circuit is connected with the other receiving port and is used for supporting the receiving processing of a second radio frequency signal, and the frequency band of the second radio frequency signal is different from that of the first radio frequency signal; the first switch assembly is used for selecting and conducting a passage between the antenna port and at least one of the transceiver circuit and the receiving circuit.
Description
Technical Field
The embodiment of the application relates to the technical field of antenna radio frequency, in particular to a radio frequency front end module, a radio frequency receiving and transmitting system and communication equipment.
Background
Along with the continuous development of communication technology, the communication device needs to realize the function of receiving and transmitting signals of a plurality of different standards or different frequency bands, so as to support the function of receiving and transmitting signals under a plurality of different conditions and improve the communication capability of the communication device. However, the receiving and transmitting functions of signals in different systems or different frequency bands can be realized by a plurality of radio frequency receiving and transmitting devices, so that the volume of communication radio frequency is large and the integration level is insufficient.
Disclosure of Invention
The embodiment of the application provides a radio frequency front-end module, a radio frequency receiving and transmitting system and communication equipment, which can be compatible with the transmitting function of a radio frequency signal in one frequency band and the receiving function of the radio frequency signal in another frequency band, thereby improving the integration level of the radio frequency front-end module and further reducing the volumes of the radio frequency receiving and transmitting system and the communication equipment.
A radio frequency front end module configured with an antenna port for connecting an antenna, two receiving ports for connecting a radio frequency transceiver, and an input port for receiving a first radio frequency signal, the radio frequency front end module comprising:
the receiving and transmitting circuit is respectively connected with the input port and one receiving port and is used for selecting and supporting the receiving processing of the first radio frequency signals received by the antenna port and transmitting the first radio frequency signals received by the input port to the antenna port for transmission;
the receiving circuit is connected with the other receiving port and is used for supporting the receiving processing of a second radio frequency signal, and the frequency band of the second radio frequency signal is different from that of the first radio frequency signal;
the first switch assembly is used for selectively conducting a passage between the antenna port and at least one of the receiving circuit and the receiving circuit.
A radio frequency transceiver system comprising:
a radio frequency transceiver;
an antenna group comprising a first antenna, a second antenna, a third antenna and a fourth antenna;
as described above, the two receiving ports of the rf front-end module are respectively connected with the rf transceiver, and the antenna port of the first rf device is connected with the first antenna;
a first radio frequency device for supporting transmission of the first radio frequency signal;
the first end of the third switch component is connected with the first radio frequency device, a second end of the third switch component is connected with the input port of the radio frequency front end module, the other three second ends of the third switch component are respectively in one-to-one correspondence with the second antenna, the third antenna and the fourth antenna, and the third switch component is used for selectively outputting the first radio frequency signal to any antenna.
A communication device comprising a radio frequency transceiver system as described above.
The above-mentioned radio frequency front end module, radio frequency transceiver system and communication equipment, the radio frequency front end module is configured with the antenna port that is used for connecting the antenna, is used for connecting two receiving ports of radio frequency transceiver and is used for receiving the input port of first radio frequency signal, the radio frequency front end module includes: the receiving and transmitting circuit is respectively connected with the input port and one receiving port and is used for selecting and supporting the receiving processing of the first radio frequency signals received by the antenna port and transmitting the first radio frequency signals received by the input port to the antenna port for transmission; the receiving circuit is connected with the other receiving port and is used for supporting the receiving processing of a second radio frequency signal, and the frequency band of the second radio frequency signal is different from that of the first radio frequency signal; the first switch assembly is used for selectively conducting a passage between the antenna port and at least one of the receiving circuit and the receiving circuit. In the embodiment of the application, based on the first switch component capable of selectively conducting at least one channel, the radio frequency front end module not only can selectively receive or transmit the radio frequency signal of a single frequency band, but also can realize simultaneous receiving and transmitting of the double frequency band signal through one antenna port on the premise of not interrupting the radio frequency signal channel of any frequency band, thereby providing the radio frequency front end module with high integration level and double frequency band simultaneous receiving and transmitting function.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments or the conventional techniques of the present application, the drawings required for the descriptions of the embodiments or the conventional techniques will be briefly described below, and it is apparent that the drawings in the following description are only some embodiments of the present application, and other drawings may be obtained according to the drawings without inventive effort for those skilled in the art.
FIG. 1 is a block diagram of an RF front-end module according to an embodiment;
FIG. 2 is a second block diagram of an RF front-end module according to an embodiment;
FIG. 3 is a block diagram of a first switch assembly of an embodiment;
FIG. 4 is a third block diagram of an RF front-end module according to an embodiment;
FIG. 5 is a block diagram of an RF transceiver system according to an embodiment;
FIG. 6 is a second block diagram of an RF transceiver system according to an embodiment;
fig. 7 is a third block diagram of a radio frequency transceiver system according to an embodiment.
Description of element numbers:
radio frequency front end module: 10; and the receiving and transmitting circuit: 100; a first receiving unit: 110; a first radio frequency switch: 120; the receiving circuit: 200; a first switch assembly: 300; a signal frequency dividing unit: 310; a first impedance adjuster: 311; a second impedance adjuster: 312; a second radio frequency switch: 320. A first filter: 410; a second filter: 420; multichannel selection switch: 500; a radio frequency transceiver: 20, a step of; a first radio frequency device: 30; and a third switch assembly: 40, a step of performing a; fourth radio frequency switch: 41; fifth radio frequency switch: 42; sixth radio frequency switch: 43. And a second radio frequency device: 50; and a third radio frequency switch: 60; third radio frequency device: 70.
Detailed Description
In order to facilitate an understanding of the embodiments of the present application, the embodiments of the present application will be described more fully below with reference to the accompanying drawings. Preferred embodiments of the present application are shown in the drawings. The embodiments of the application may, however, be embodied in many different forms and are not limited to the embodiments described herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which embodiments of the application belong. The terminology used in the description of the embodiments of the application herein is for the purpose of describing particular embodiments only and is not intended to be limiting of embodiments of the application. The term "and/or" as used herein includes any and all combinations of one or more of the associated listed items.
It will be understood that the terms first, second, etc. as used herein may be used to describe various elements, but these elements are not limited by these terms. These terms are only used to distinguish one element from another element. For example, a first radio frequency signal may be referred to as a second radio frequency signal, and similarly, a second radio frequency signal may be referred to as a first radio frequency signal, without departing from the scope of the application. The first radio frequency signal and the second radio frequency signal are both radio frequency signals, but they are not the same radio frequency signal.
Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In the description of the present application, the meaning of "plurality" means at least two, for example, two, three, etc., unless specifically defined otherwise. In the description of the present application, the meaning of "several" means at least one, such as one, two, etc., unless specifically defined otherwise.
The radio frequency front end module 10 according to the embodiments of the present application may be applied to a communication device having a wireless communication function, 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. For convenience of description, the above-mentioned devices are collectively referred to as communication devices.
In this embodiment, the rf front-end module 10 may support receiving and transmitting signals in one frequency band and receiving signals in another frequency band, so as to implement receiving switching control, transmitting switching control, and switching control between transmitting and receiving signals. Further, the rf front-end module 10 may be understood as a packaging structure, fig. 1 is one of the block diagrams of the rf front-end module 10 in an embodiment, referring to fig. 1, in the embodiment, the rf front-end module 10 is configured with an antenna port for connecting an antenna, two receiving ports for connecting an rf transceiver, and an input port for receiving a first rf signal, and the rf front-end module 10 includes a transceiver circuit 100, a receiving circuit 200, and a first switch assembly 300.
The transceiver circuit 100 is respectively connected to the input port and the receiving port, and is configured to selectively support a receiving process of the first radio frequency signal received by the antenna port, and selectively support a transmission of the first radio frequency signal received by the input port to the antenna port for transmission. Specifically, the transceiver circuit 100 may select to transmit the first rf signal from the antenna port to the receiving port based on the internal control structure according to the device receiving and transmitting requirements, or may select to transmit the first rf signal from the input port to the antenna port, and when the transceiver circuit 100 transmits the first rf signal, the transceiver circuit may also amplify and filter the first rf signal to improve the receiving and transmitting quality of the first rf signal.
The receiving circuit 200 is connected to another receiving port, and is configured to support receiving processing of a second radio frequency signal, where a frequency band of the second radio frequency signal is different from a frequency band of the first radio frequency signal. The receiving circuit 200 may include a low noise amplifier. It should be noted that, the first radio frequency signal refers to a radio frequency signal in a first frequency band, the second radio frequency signal refers to a radio frequency signal in a second frequency band, and the first radio frequency signal and the second radio frequency signal are not specific to be received radio frequency signals or transmitted radio frequency signals, but are only used for distinguishing signals in different frequency bands. Further, the first rf signal may be a 5G-mode rf signal, for example, an N41-band rf signal. The second rf signal may be a 4G-mode rf signal, for example, a B3-band rf signal. In other embodiments of the present application, the first rf signal is a signal in the N41 frequency band, and the second rf signal is a signal in the B3 frequency band.
Two first ends of the first switch assembly 300 are respectively connected with the transceiver circuit 100 and the receiving circuit 200 in a one-to-one correspondence manner, a second end of the first switch assembly 300 is connected with the antenna port, and the first switch assembly 300 is used for selectively conducting a path between the antenna port and at least one of the transceiver circuit 100 and the receiving circuit 200. The first switch assembly 300 may selectively switch on only the path between the antenna port and the transceiver circuit 100 to receive or transmit the first frequency band signal; the first switch assembly 300 may also select to only conduct the path between the antenna port and the receiving circuit 200 to receive the second frequency band signal; the first switch assembly 300 may also selectively simultaneously turn on a path between the antenna port and the transceiver circuit 100 and a path between the antenna port and the receiver circuit 200 to simultaneously transmit and receive the first frequency band signal and the second frequency band signal. Based on the structure, the receiving and transmitting functions of signals in different frequency bands can be integrated in the same radio frequency device, so that the integration level of the radio frequency front end module 10 is improved. Further, the first switch assembly 300 is internally configured with isolation structures for signals in different frequency bands, so as to avoid interference between signals in different frequency bands when the two paths are simultaneously turned on, thereby improving the signal receiving and transmitting quality of the rf front-end module 10.
In this embodiment, the rf front-end module 10 is configured with an antenna port for connecting an antenna, two receiving ports for connecting an rf transceiver 20, and an input port for receiving a first rf signal, and the rf front-end module 10 includes: the transceiver circuit 100 is respectively connected with the input port and the receiving port and is used for selectively supporting the receiving processing of the first radio frequency signal and the transmission of the first radio frequency signal received by the input port; the receiving circuit 200 is connected with the other receiving port and is used for supporting the receiving processing of a second radio frequency signal, and the frequency band of the second radio frequency signal is different from that of the first radio frequency signal; the first switch assembly 300, two first ends of the first switch assembly 300 are respectively connected with the transceiver circuit 100 and the receiving circuit 200 in a one-to-one correspondence, a second end of the first switch assembly 300 is connected with the antenna port, and the first switch assembly 300 is used for selectively conducting a path between the antenna port and at least one of the transceiver circuit 100 and the receiving circuit 200. In the embodiment of the application, based on the first switch assembly 300 capable of selectively conducting at least one channel, the radio frequency front end module 10 not only can selectively receive or transmit a radio frequency signal in a single frequency band, but also can realize simultaneous receiving and transmitting of a double frequency band signal through one antenna port on the premise of not interrupting the radio frequency signal channel in any frequency band, thereby providing the radio frequency front end module 10 with high integration level and double frequency band simultaneous receiving and transmitting function.
Fig. 2 is a second block diagram of the rf front-end module 10 according to an embodiment, referring to fig. 2, in this embodiment, the transceiver circuit 100 includes a first receiving unit 110 and a first rf switch 120.
The first receiving unit 110 is connected to one of the receiving ports, and is configured to receive and amplify the first radio frequency signal. Specifically, the first receiving unit 110 may include a low noise amplifier (LNA, low Noise Amplifier), where the low noise amplifier amplifies the effective signal without increasing noise, so as to improve the signal-to-noise ratio of the received rf signal, and further improve the signal processing quality of the rf front-end module 10. It is understood that in other embodiments, the first receiving unit 110 may further include a filter, a radio frequency switch, a power divider, and the like, so as to implement a richer signal receiving function. In the embodiments of the present application, the first receiving unit 110 includes a low noise amplifier as an example.
Two first ends of the first rf switch 120 are respectively connected to the input port and the first receiving unit 110 in a one-to-one correspondence, and a second end of the first rf switch 120 is connected to a first end of the first switch assembly 300, where the first rf switch 120 is configured to selectively transmit the first rf signal from the first switch assembly 300 to the first receiving unit 110 or selectively transmit the first rf signal from the input port to the first switch assembly 300. In the embodiment shown in fig. 2, the first rf switch 120 is a single pole double throw switch, it will be appreciated that in other embodiments, the first rf switch 120 may be configured with other numbers of first and second terminals to implement other path switching functions.
In this embodiment, based on the integration of the first rf switch 120 in the rf front-end module 10, the switching of the receiving and transmitting functions of the first rf signal can be achieved without supporting external other channel switching devices, so that the number of devices in the rf receiving and transmitting system can be effectively reduced, the overall integration level of the rf receiving and transmitting system can be further improved, and the volume of the communication device can be reduced.
Fig. 3 is a block diagram of a first switch assembly 300 according to an embodiment, referring to fig. 3, in this embodiment, the first switch assembly 300 includes a signal frequency dividing unit 310 and a second radio frequency switch 320.
Two first ends of the second rf switch 320 are respectively connected to the signal frequency dividing unit 310, a second end of the second rf switch 320 is connected to the antenna port, and the second rf switch 320 is configured to select one signal transmission path corresponding to a frequency band of the transmitted rf signal when one of the first rf signal and the second rf signal is transmitted; and when the first radio frequency signal and the second radio frequency signal are transmitted simultaneously, the first signal transmission path and the second signal transmission path are selected to be simultaneously conducted. The signal frequency dividing unit 310 is connected to the second end of the first rf switch 120, the receiving circuit 200, and the second rf switch 320, respectively, and is configured to control the first rf signal to be transmitted to the first signal transmission path and control the second rf signal to be transmitted to the second signal transmission path when the first rf signal and the second rf signal are simultaneously transmitted.
Wherein the signal frequency dividing unit 310 may implement frequency division by means of impedance adjustment, and with continued reference to fig. 3, the signal frequency dividing unit 310 may include a first impedance adjuster 311 and a second impedance adjuster 312. The first impedance adjuster 311 is respectively connected to a first end of the second rf switch 320 and a second end of the first rf switch 120, and is configured to adjust an impedance of the first signal transmission path, so that a first rf signal is transmitted to the second end of the first rf switch 120; the second impedance adjuster 312 is connected to the other first end of the second rf switch 320 and the receiving circuit 200, and is configured to adjust the second signal transmission path so that the second rf signal is transmitted to the receiving circuit 200.
Specifically, when receiving radio frequency signals of two different frequency bands, the signal frequency dividing unit 310 may select to increase the impedance of one signal transmission path to a signal of one preset frequency band and/or decrease the impedance to a signal of another preset frequency band through the first impedance adjustor 311 and the second impedance adjustor 312, so that the signal transmission path can only transmit a signal of one preset frequency band. For example, the signal frequency dividing unit 310 may selectively increase the impedance of the first signal transmission path to the B3 band signal and decrease the impedance to the N41 band signal, so that the first signal transmission path only transmits the first rf signal of the N41 band and blocks the second rf signal of the B3 band, so that when one input end of the signal frequency dividing unit 310 receives signals of two different bands at the same time, the frequency bands of the signals are screened, and the signals of different bands are output through different output ends. Moreover, it will be appreciated that when the impedance on a signal transmission path is tuned to be very small, the path may be considered as a wire and therefore the quality of the radio frequency signal flowing through the signal transmission path is not affected.
Fig. 4 is a block diagram of a third embodiment of the rf front-end module 10, and referring to fig. 4, in one embodiment, the rf front-end module 10 further includes a first filter 410 and a second filter 420. The first filter 410 is connected to a first end of the first switch assembly 300 and the transceiver circuit 100, respectively, and is configured to filter the first rf signal. It should be understood that, in other embodiments, a first filter 410 may be disposed between a first end of the first rf switch 120 and the input port, and another first filter 410 may be disposed between another first end of the first rf switch 120 and the receiving port, but the receiving path and the transmitting path of the first rf signal are not simultaneously conducted under the control of the first rf switch 120, so that the first filter 410 may be time-division multiplexed to support the transmission or the reception of the first rf signal based on the arrangement of the first filter 410 in the embodiment of fig. 4, so as to improve the integration degree of the rf front-end module 10. The second filter 420 is connected to the other first end of the first switch assembly 300 and the receiving circuit 200, and is used for filtering the second radio frequency signal. The filter only allows the radio frequency signals with preset frequency bands to pass through, and the filter can be a band-pass filter, a low-pass filter and the like. It should be noted that, in the embodiment of the present application, the type of each filter is not further limited, and an appropriate filter may be selected according to the frequency band of the radio frequency signal to be filtered. Illustratively, the rf front-end module 10 of the present embodiment may be an rf LFEM device, which may be understood as an rf device integrating an rf switch, a low noise amplifier, and a filter.
In one embodiment, with continued reference to fig. 4, the rf front-end module 10 further includes a multi-channel selector switch 500, where two first ends of the multi-channel selector switch 500 are respectively connected to two receiving ports in a one-to-one correspondence, two second ends of the multi-channel selector switch 500 are respectively connected to the transceiver circuit 100 and the receiving circuit 200 in a one-to-one correspondence, specifically, two second ends of the multi-channel selector switch 500 are respectively connected to the first receiving unit 110 and the receiving circuit 200 in a one-to-one correspondence, and the multi-channel selector switch 500 is configured to selectively output the first rf signal to any receiving port and output the second rf signal to another receiving port. As can be seen from comparing fig. 2 and fig. 4, the receiving ports corresponding to the first rf signal and the second rf signal can be selected spontaneously by the multi-channel selector switch 500, so as to effectively improve the control flexibility of the rf front-end module 10.
Fig. 5 is one of the block diagrams of the rf transceiver system according to an embodiment, referring to fig. 5, in this embodiment, the rf transceiver system includes an rf transceiver 20, an antenna set, an rf front-end module 10 as described above, a first rf device 30, and a third switch assembly 40, and in this embodiment, the rf front-end module 10 provided in connection with the embodiment of fig. 4 is described as an example.
The antenna group comprises a first antenna ANT1, a second antenna ANT2, a third antenna ANT3 and a fourth antenna ANT4. The multiple antennas are used for receiving and transmitting radio frequency signals, wherein each antenna can be a directional antenna or a non-directional antenna. Illustratively, each antenna may be formed using any suitable type of antenna. For example, each antenna may include an antenna with a resonating element formed from the following antenna structure: at least one of an array antenna structure, a loop antenna structure, a patch antenna structure, a slot antenna structure, a helical antenna structure, a strip antenna, a monopole antenna, a dipole antenna, and the like.
The first radio frequency device 30 is arranged to support transmission of said first radio frequency signal. The two receiving ports of the rf front-end module 10 are respectively connected to the rf transceiver 20, and the antenna port of the first rf device 30 is connected to the first antenna ANT 1. The first end of the third switch assembly 40 is connected to the first rf device 30, a second end of the third switch assembly 40 is connected to the input port SRS IN of the rf front-end module 10, the other three second ends of the third switch assembly 40 are respectively IN one-to-one correspondence with the second antenna ANT2, the third antenna ANT3, and the fourth antenna ANT4, and the third switch assembly 40 is configured to selectively output the first rf signal to any one of the antennas.
Further, based on the antenna group structure of the plurality of antennas, a multiple-input multiple-output (Multi Input Multi Output, MIMO) mode for signals and a diversity mode can be realized.
The MIMO mode is a key technology for improving system capacity and spectrum utilization rate in fifth generation mobile communication (5G), and is characterized in that multiple transmitting antennas and receiving antennas are used at a transmitting end and a receiving end respectively, and the MIMO mode is different from a traditional signal processing mode in that signal processing problems are studied in terms of time and space at the same time, so that the data rate of the system can be improved, the bit error rate can be reduced, and the transmission quality of wireless signals can be improved without increasing bandwidth and transmitting power. In the 2×2MIMO mode, the two antennas of the transmitting end transmit different data at the same time, and the two antennas of the receiving end receive different data at the same time, so that double data is transmitted at the same time, and the network speed is fast as reflected to the user plane.
The diversity mode may be used to receive two different signals carrying the same information, and the difference between the two signals may include at least one of a transmission path, a frequency, a time, a diversity mode, etc., and process the signals from the two receiving ports according to a preset rule, thereby obtaining final received information. Through the above arrangement, the accuracy of information transmission can be effectively improved, that is, the radio frequency front end module 10 with higher reliability is provided.
In this embodiment, the first antenna ANT1 is configured to support the transmission and reception of a first radio frequency signal in the N41 frequency band and the reception of a second radio frequency signal in the B3 frequency band, and the second antenna ANT2, the third antenna ANT3, and the fourth antenna ANT4 are configured to support the transmission and reception of a first radio frequency signal in the N41 frequency band. It will be appreciated that in order to achieve better communication quality, the communication device may be configured with the functionality of sounding reference signals (Sounding Reference Signal, SRS) to probe the communication quality of the respective signals. When used in a base station for time division duplexing (Time Division Duplex, TDD), the sounding results of SRS may be used for both uplink and downlink, i.e., TDD has reciprocity of uplink and downlink channels. Therefore, the SRS detection directly affects the download rate of 5G.
When the communication device has the SRS requirement of the N41 band, the first antenna ANT1 needs to be switched to the path of N41 diversity reception, and the N41 round trip signal output by the first radio frequency device 30 needs to be transmitted not only through the second antenna ANT2, the third antenna ANT3 and the fourth antenna ANT4, but also through the third switch assembly 40, the input port SRS IN of the radio frequency front end module 10, the first radio frequency switch 120, the first filter 410 and the first switch assembly 300 to be transmitted to the first antenna ANT1 and transmitted. At this time, the first antenna ANT1 demodulates the received second rf signal in the B3 band, which is transmitted to the rf transceiver 20 at the back end through the first switching element 300, the second filter 420 and the receiving circuit 200. In addition, in the rf front-end module 10, when the two paths connected to the first filter 410 and the second filter 420 are simultaneously operated, the first switch assembly 300 is operated by multi-on to realize the CA combining requirement of b3+n41, that is, the first switch assembly 300 ensures to switch to the two paths of N41 and B3 simultaneously, and makes the signal in the B3 frequency band flow to only the second signal transmission path corresponding to the second filter 420, and the N41 signal flows to only the first signal transmission path corresponding to the first filter 410. Therefore, the two paths of signals cannot interfere with each other, and the reliability of the radio frequency receiving and transmitting system for receiving the second radio frequency signal of the B3 frequency band is effectively improved.
Fig. 6 is a second block diagram of an embodiment of the radio frequency transceiver system, referring to fig. 6, in this embodiment, the antenna set further includes a fifth antenna ANT5, and the radio frequency transceiver system further includes a second radio frequency device 50 and a third radio frequency switch 60.
The second radio frequency device 50 is arranged to support the reception and transmission of said second radio frequency signal. Two first ends of the third rf switch 60 are respectively connected with the rf front-end module 10 and the second rf device 50 in a one-to-one correspondence manner, and two second ends of the third rf switch 60 are respectively connected with the first antenna ANT1 and the fifth antenna ANT5 in a one-to-one correspondence manner. In this embodiment, the fifth antenna ANT5 is configured to support the receiving and transmitting of the first radio frequency signal in the N41 frequency band and the receiving of the second radio frequency signal in the B3 frequency band, so that the second radio frequency signal in the B3 frequency band can implement a dual-channel receiving function, thereby selecting to support the MIMO mode or the diversity mode, so as to improve the receiving rate or accuracy of the radio frequency front end module 10 to the B3 frequency band signal. Moreover, by providing the third radio frequency switch 60, one antenna of the first antenna ANT1 and the fifth antenna ANT5 may be flexibly selected to perform main set reception, and the other antenna may be diversity-received, so as to further improve reliability thereof. Similar to the embodiment of fig. 5, in this embodiment, no phenomenon that the demodulation of the receiver is affected due to the data loss of the B3 band caused by the SRS of the N41 band occurs, regardless of whether the B3 band of the communication device operates in the MIMO mode or the diversity mode.
Fig. 7 is a block diagram of a third embodiment of the rf transceiver system, referring to fig. 7, in this embodiment, the rf transceiver system further includes two third rf devices 70, each third rf device 70 is configured to support reception of the second rf signal, and the third switch assembly 40 includes a fourth rf switch 41, a fifth rf switch 42, and a sixth rf switch 43. Illustratively, the first rf device 30 may be an N41 band rf LPAF device (i.e., an rf device integrating a low noise amplifier, a power amplifier, and a filter), and the second rf device 50 may be an rf device supporting a plurality of band reception functions including a B3 band. Further, the structures of the two third rf devices 70 may not be identical, for example, one of the third rf devices 70 may be an LFEM device with an N41 frequency band, and the other third rf device 70 may be a low noise amplifier. It will be appreciated that the above-described devices are for illustrative purposes only and are not intended to limit the scope of the present application.
A first end of the fourth rf switch 41 is connected to the third rf device 70, and a second end of the fourth rf switch 41 is connected to the second antenna ANT 2. A first end of the fifth rf switch 42 is connected to another third rf device 70, and a second end of the fifth rf switch 42 is connected to the third antenna ANT 3. The first end of the sixth rf switch 43 is connected to the first rf device 30, and the four first ends of the sixth rf switch 43 are respectively connected to another first end of the fourth rf switch 41, another first end of the fifth rf switch 42, the input port SRS IN of the rf front-end module 10, and the fourth antenna ANT4 IN a one-to-one correspondence.
The working principle of the radio frequency transceiver system is specifically analyzed based on the radio frequency transceiver system shown in fig. 7.
B3, receiving control: the radio frequency signal received by one of the first antenna ANT1 and the fifth antenna ANT5 is received by the main set through the third radio frequency switch 60 and the second radio frequency device 50 to the radio frequency transceiver 20, and the radio frequency signal received by the other one of the first antenna ANT1 and the fifth antenna ANT5 is received by diversity through the third radio frequency switch 60, the first switch assembly 300, the second filter 420, the receiving circuit 200, the multi-channel selection switch 500 to the radio frequency transceiver 20.
N41 reception control: the rf signal received by the fourth antenna ANT4 is received by the main set through the sixth rf switch 43 and the first rf device 30 to the rf transceiver 20. The radio frequency signal received by the third antenna ANT3 is sent to the radio frequency transceiver 20 via the fifth radio frequency switch 42 and the third radio frequency device 70 to implement main set MIMO reception. The radio frequency signal received by one of the first antenna ANT1 and the fifth antenna ANT5 is diversity-received through the third radio frequency switch 60, the first switch assembly 300, the first filter 410, the first radio frequency switch 120, the first receiving unit 110, the multi-channel selection switch 500 to the radio frequency transceiver 20. The radio frequency signal received by the second antenna ANT2 is sent to the radio frequency transceiver 20 via the fourth radio frequency switch 41 and the third radio frequency device 70 to realize diversity MIMO reception.
N41 SRS round robin control: the first switching element 300 is switched to double pass conduction. The transmission signal is output from the radio frequency transceiver 20, enters the radio frequency front end module 10 through the first radio frequency device 30 and the sixth radio frequency switch 43 and passes through the input port SRS IN, passes through the first radio frequency switch 120, the first filter 410 and the first switch component 300, and then is output to the first antenna ANT1 through the third radio frequency switch 60, so as to realize SRS. The transmission signal is output from the rf transceiver 20, and is output to the second antenna ANT2 via the first rf device 30, the sixth rf switch 43, and the fourth rf switch 41, thereby implementing SRS. The transmission signal is output from the radio frequency transceiver 20, and is output through the first radio frequency device 30, the sixth radio frequency switch 43, and through the fifth radio frequency switch 42 to the third antenna ANT3, thereby implementing SRS. The transmission signal is output from the rf transceiver 20, and is output to the fourth antenna ANT4 via the first rf device 30 and the sixth rf switch 43, so as to implement SRS.
The technical features of the above-described embodiments may be arbitrarily combined, and all possible combinations of the technical features in the above-described embodiments are not described for brevity of description, however, as long as there is no contradiction between the combinations of the technical features, they should be considered as the scope of the description.
The above examples merely represent a few implementations of the present examples, which are described in more detail and are not to be construed as limiting the scope of the application. It should be noted that it will be apparent to those skilled in the art that various modifications and improvements can be made to the present application without departing from the spirit of the embodiments of the application. Accordingly, the protection scope of the patent of the embodiments of the application shall be subject to the appended claims.
Claims (11)
1. A radio frequency, LFEM, device configured with an antenna port for connecting an antenna, two receive ports for connecting a radio frequency transceiver, and an input port for receiving a first radio frequency signal, the radio frequency, LFEM device comprising:
the receiving and transmitting circuit is respectively connected with the input port and one receiving port and is used for selecting and supporting the receiving processing of the first radio frequency signals received by the antenna port and transmitting the first radio frequency signals received by the input port to the antenna port for transmission;
the receiving circuit is connected with the other receiving port and is used for supporting the receiving processing of a second radio frequency signal, and the frequency band of the second radio frequency signal is different from that of the first radio frequency signal;
the first switch assembly is used for selectively conducting a passage between the same antenna port and at least one of the receiving circuit and the receiving circuit;
the antenna port is used for supporting the receiving and transmitting of the first radio frequency signal and supporting the receiving of the second radio frequency signal under the condition that a passage between the antenna port and the receiving and transmitting circuit and a passage between the antenna port and the receiving circuit are respectively conducted and the receiving and transmitting circuit transmits the first radio frequency signal received by the input port to the antenna port.
2. The radio frequency LFEM device of claim 1, wherein the transceiver circuit comprises:
the first receiving unit is connected with one receiving port and is used for receiving and amplifying a first radio frequency signal;
the first radio frequency switch is used for selecting to transmit the first radio frequency signal from the first switch assembly to the first receiving unit or selecting to transmit the first radio frequency signal from the input port to the first switch assembly.
3. The radio frequency LFEM device of claim 2, wherein the first switching assembly comprises a signal dividing unit and a second radio frequency switch;
the signal frequency division unit is respectively connected with the second end of the first radio frequency switch, the receiving circuit and the second radio frequency switch and is used for controlling the first radio frequency signal to be transmitted to the first signal transmission channel and controlling the second radio frequency signal to be transmitted to the second signal transmission channel when the first radio frequency signal and the second radio frequency signal are transmitted simultaneously;
the second radio frequency switch is used for selecting a signal transmission channel corresponding to the radio frequency signal which is transmitted in a conducting way when one of the first radio frequency signal and the second radio frequency signal is transmitted; and when the first radio frequency signal and the second radio frequency signal are transmitted simultaneously, the first signal transmission path and the second signal transmission path are selectively conducted.
4. A radio frequency LFEM device according to claim 3, wherein the signal dividing unit comprises:
the first impedance adjuster is respectively connected with a first end of the second radio frequency switch and a second end of the first radio frequency switch and is used for adjusting the impedance on the first signal transmission path so as to enable a first radio frequency signal to be transmitted to the second end of the first radio frequency switch;
and the second impedance adjuster is respectively connected with the other first end of the second radio frequency switch and the receiving circuit and is used for adjusting the second signal transmission path so as to enable the second radio frequency signal to be transmitted to the receiving circuit.
5. The radio frequency LFEM device of claim 1, further comprising:
the first filter is respectively connected with a first end of the first switch assembly and the transceiver circuit and is used for filtering the first radio frequency signal;
and the second filter is respectively connected with the other first end of the first switch component and the receiving circuit and is used for filtering a second radio frequency signal.
6. The radio frequency LFEM device of claim 1, further comprising:
the multi-channel selection switch is used for selecting and outputting the first radio frequency signal to any receiving port and outputting the second radio frequency signal to the other receiving port.
7. The radio frequency LFEM device according to any one of claims 1 to 6, wherein the first radio frequency signal is a signal in the N41 frequency band and the second radio frequency signal is a signal in the B3 frequency band.
8. A radio frequency transceiver system, comprising:
a radio frequency transceiver;
an antenna group comprising a first antenna, a second antenna, a third antenna and a fourth antenna;
the radio frequency LFEM device according to any one of claims 1 to 7, wherein two receiving ports of said radio frequency LFEM device are respectively connected to said radio frequency transceiver, and an antenna port of said radio frequency LFEM device is connected to said first antenna;
a first radio frequency device for supporting transmission of the first radio frequency signal;
the first end of the third switch component is connected with the first radio frequency device, a second end of the third switch component is connected with an input port of the radio frequency LFEM device, the other three second ends of the third switch component are respectively in one-to-one correspondence with the second antenna, the third antenna and the fourth antenna, and the third switch component is used for selectively outputting the first radio frequency signal to any antenna.
9. The radio frequency transceiver system of claim 8, wherein the antenna group further comprises a fifth antenna, the radio frequency transceiver system further comprising:
a second radio frequency device for supporting reception and transmission of the second radio frequency signal;
and the two first ends of the third radio frequency switch are respectively connected with the radio frequency LFEM device and the second radio frequency device in a one-to-one correspondence manner, and the two second ends of the third radio frequency switch are respectively connected with the first antenna and the fifth antenna in a one-to-one correspondence manner.
10. The radio frequency transceiver system of claim 8, further comprising two third radio frequency devices, each third radio frequency device being configured to support reception of the second radio frequency signal, the third switch assembly comprising:
a first end of the fourth radio frequency switch is connected with the third radio frequency device, and a second end of the fourth radio frequency switch is connected with the second antenna;
a fifth radio frequency switch, a first end of which is connected with another third radio frequency device, and a second end of which is connected with the third antenna;
and the first end of the sixth radio frequency switch is connected with the first radio frequency device, and the four second ends of the sixth radio frequency switch are respectively connected with the other first end of the fourth radio frequency switch, the other first end of the fifth radio frequency switch, the input port of the radio frequency LFEM device and the fourth antenna in a one-to-one correspondence manner.
11. A communication device comprising a radio frequency transceiver system as claimed in any one of claims 8 to 10.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110292724.8A CN115118297B (en) | 2021-03-18 | 2021-03-18 | Radio frequency front end module, radio frequency receiving and transmitting system and communication equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110292724.8A CN115118297B (en) | 2021-03-18 | 2021-03-18 | Radio frequency front end module, radio frequency receiving and transmitting system and communication equipment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN115118297A CN115118297A (en) | 2022-09-27 |
| CN115118297B true CN115118297B (en) | 2023-11-10 |
Family
ID=83324362
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110292724.8A Active CN115118297B (en) | 2021-03-18 | 2021-03-18 | Radio frequency front end module, radio frequency receiving and transmitting system and communication equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115118297B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115441895B (en) * | 2022-11-10 | 2023-04-07 | 荣耀终端有限公司 | Radio frequency switch device, radio frequency front end module, radio frequency circuit and electronic equipment |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109167611A (en) * | 2018-07-23 | 2019-01-08 | Oppo广东移动通信有限公司 | Radio frequency system, antenna switching control method and Related product |
| CN212588326U (en) * | 2020-05-26 | 2021-02-23 | Oppo广东移动通信有限公司 | Radio frequency PA Mid device, radio frequency system and communication equipment |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20070161357A1 (en) * | 2006-01-12 | 2007-07-12 | Sony Ericsson Mobile Communications Ab | Multiband antenna switch |
| US10009058B2 (en) * | 2012-06-18 | 2018-06-26 | Qorvo Us, Inc. | RF front-end circuitry for receive MIMO signals |
| TWI652913B (en) * | 2016-10-28 | 2019-03-01 | 絡達科技股份有限公司 | Multi-mode multi-band transceiver, radio frequency front-end circuit and radio frequency system using the same |
-
2021
- 2021-03-18 CN CN202110292724.8A patent/CN115118297B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109167611A (en) * | 2018-07-23 | 2019-01-08 | Oppo广东移动通信有限公司 | Radio frequency system, antenna switching control method and Related product |
| CN212588326U (en) * | 2020-05-26 | 2021-02-23 | Oppo广东移动通信有限公司 | Radio frequency PA Mid device, radio frequency system and communication equipment |
Also Published As
| Publication number | Publication date |
|---|---|
| CN115118297A (en) | 2022-09-27 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN212588327U (en) | Radio frequency PA Mid device, radio frequency transceiving system and communication equipment | |
| CN112769438B (en) | Radio frequency MMPA device, radio frequency system and communication equipment | |
| CN114124145B (en) | Radio frequency system and communication equipment | |
| CN115765762B (en) | Radio frequency assembly and communication device | |
| CN113271113A (en) | Radio frequency system, radio frequency assembly and communication equipment | |
| CN111682885B (en) | 1T2R radio frequency circuit and wireless communication equipment | |
| CN212811690U (en) | Radio frequency L-DRX device, radio frequency transceiving system and communication equipment | |
| CN114124137B (en) | Radio frequency system and communication equipment | |
| CN114095048B (en) | Radio frequency system and communication equipment | |
| CN113992229B (en) | Radio frequency system and communication equipment | |
| CN113726357A (en) | Radio frequency PA Mid device, radio frequency transceiving system and communication equipment | |
| CN115118297B (en) | Radio frequency front end module, radio frequency receiving and transmitting system and communication equipment | |
| CN113382484B (en) | Customer premises equipment | |
| WO2021238534A1 (en) | Radio frequency pa mid device, radio frequency transceiving system, and communication device | |
| CN114142886A (en) | Radio frequency system and communication equipment | |
| CN114285422B (en) | Radio frequency DRX device, radio frequency system and communication equipment | |
| CN114124112A (en) | Radio frequency circuit for transmitting multi-frequency-band signals | |
| CN113949402B (en) | Radio frequency system and communication equipment | |
| CN115102559B (en) | Radio frequency PA Mid device, radio frequency system and communication equipment | |
| CN114614838B (en) | Radio frequency system and communication equipment | |
| CN114124136B (en) | Radio frequency system and communication equipment | |
| CN115208416B (en) | Radio frequency system and communication device | |
| CN113922828B (en) | Receiving device, radio frequency system and communication equipment | |
| CN215498956U (en) | Radio frequency front-end circuit and electronic equipment | |
| CN115378444A (en) | Radio frequency system and communication device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |