CN110808757A - Radio frequency front-end circuit and terminal equipment - Google Patents
Radio frequency front-end circuit and terminal equipment Download PDFInfo
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- CN110808757A CN110808757A CN201911035784.0A CN201911035784A CN110808757A CN 110808757 A CN110808757 A CN 110808757A CN 201911035784 A CN201911035784 A CN 201911035784A CN 110808757 A CN110808757 A CN 110808757A
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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
- H04B1/38—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
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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
- H04B1/38—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
- H04B1/401—Circuits for selecting or indicating operating mode
Abstract
The invention discloses a radio frequency front-end circuit and a terminal device, wherein the radio frequency front-end circuit comprises: a switching module; and the radio frequency modules are electrically connected with the switching module, wherein each radio frequency module is used for receiving or sending signals of a plurality of frequency bands, and at least one frequency band in the plurality of frequency bands received or sent by the radio frequency modules is the same. The radio frequency front-end circuit supports functions of downlink 4x4MIMO, uplink 2x2MIMO, downlink 2x2MIMO, independent networking, non-independent networking dual connection and the like.
Description
Technical Field
The present invention relates to the field of communications technologies, and in particular, to a radio frequency front end circuit and a terminal device.
Background
The 5G is also called a fifth generation mobile communication technology, and the 5G is a main direction for the development of a new generation mobile communication technology and is an important component of a new generation information infrastructure in the future. Compared with 4G (fourth generation mobile communication technology), 5G will further improve the network experience of users, and simultaneously will meet the application requirements of future everything interconnection. A Radio Frequency Front End (RFFE) circuit is always an important link in the design of a mobile phone, and the RFFE circuit is a functional area between a radio frequency transceiver and an antenna of the mobile phone, and mainly includes a Power Amplifier (PA), a Low Noise Amplifier (LNA), a Switch (Switch), a Duplexer (duplex), a Filter (Filter), a frequency divider (duplex), a frequency divider (Triplexer), and other passive devices. The 5G introduces some new frequency bands and new functions, including Sub-6GHz frequency bands such as 3.5GHz and 4.8GHz, millimeter wave frequency bands, downlink 4x4 multiple input multiple output (downlink 4x4MIMO), uplink 2x2 multiple input multiple output (uplink 2x2MIMO), channel sounding reference signal transmission between transmitting antennas (SRS Switching), independent networking (SA), non-independent Networking (NSA), and the like. These new frequency bands and new functionality present significant challenges to rf front-end design. At present, 5G mobile phones are going to come into the market, most of the 5G mobile phones adopt a multi-chip scheme of SDM855+ SDX50 of the american college company, which is limited by the chip scheme, the radio frequency front end design of the 5G mobile phones is relatively complex, and 2G/3G/4G and 5G Sub-6GHz respectively adopt two radio frequency front ends, so that the PCB (circuit board) has large area and high cost.
In view of the above, it is desirable to provide a radio frequency front end design that can cover multiple frequency bands and has a small circuit board area and low cost.
Disclosure of Invention
In order to solve the above problems, embodiments of the present invention provide a radio frequency front end circuit and a terminal device, which can effectively solve the problems of large circuit board area and high cost caused by the complicated design of the existing radio frequency front end circuit.
According to an aspect of the present invention, an embodiment of the present invention provides a radio frequency front end circuit, including: a switching module; and the radio frequency modules are electrically connected with the switching module, wherein each radio frequency module is used for receiving or sending signals of a plurality of frequency bands, and at least one frequency band in the plurality of frequency bands received or sent by the radio frequency modules is the same.
Further, the plurality of radio frequency modules includes at least: the first radio frequency module is electrically connected with the switching module; the second radio frequency module is electrically connected with the switching module; the third radio frequency module is electrically connected with the switching module; the fourth radio frequency module is electrically connected with the switching module; the switching module includes: a first switch, a second switch and a third switch; the first switch is electrically connected with the first radio frequency module and the second radio frequency module respectively; the second switch is electrically connected with the third radio frequency module and the first switch respectively; the third switch is electrically connected with the fourth radio frequency module and the first switch respectively; the first radio frequency module, the second radio frequency module, the third radio frequency module and the fourth radio frequency module can work independently and are electrically connected with a radio frequency transceiver.
Further, the first radio frequency module includes: the first frequency divider is electrically connected with the first switch; the second frequency divider is electrically connected with the first frequency divider; the first frequency band first transceiver module is electrically connected with the second frequency divider, and the first frequency band first transceiver module is electrically connected with a first frequency band first receiving port and a first frequency band first transmitting port of the radio frequency transceiver; the second frequency band first transceiver module is electrically connected with the second frequency divider, and the second frequency band first transceiver module is electrically connected with a second frequency band first receiving port and a second frequency band first transmitting port of the radio frequency transceiver; the third frequency band first transceiver module is electrically connected with the first frequency divider, and the third frequency band first transceiver module is electrically connected with a third frequency band first receiving port and a third frequency band first transmitting port of the radio frequency transceiver; the fourth frequency band first transceiving module is electrically connected with the first frequency divider, and the fourth frequency band first transceiving module is electrically connected with a fourth frequency band first receiving port and a fourth frequency band first transmitting port of the radio frequency transceiver; and the third frequency band first transmitting port and the fourth frequency band first transmitting port are electrically connected with the third frequency band first receiving and transmitting module and the fourth frequency band first receiving and transmitting module respectively through the power amplifier.
Further, the second radio frequency module includes: the third frequency divider is electrically connected with the first switch; the fourth frequency divider is electrically connected with the third frequency divider; the first frequency band second transceiver module is electrically connected with the fourth frequency divider, and the first frequency band second transceiver module is electrically connected with a first frequency band second receiving port and a first frequency band second transmitting port of the radio frequency transceiver; the second frequency band second transceiver module is electrically connected with the fourth frequency divider, and the second frequency band second transceiver module is electrically connected with a second frequency band second receiving port and a second frequency band second transmitting port of the radio frequency transceiver; the third frequency band second transceiver module is electrically connected with the third frequency divider, and the third frequency band second transceiver module is electrically connected with a third frequency band second receiving port and a third frequency band second transmitting port of the radio frequency transceiver; and the fourth frequency band second transceiver module is electrically connected with the third frequency divider, and the fourth frequency band second transceiver module is electrically connected with a fourth frequency band second receiving port and a fourth frequency band second transmitting port of the radio frequency transceiver.
Further, the third rf module comprises: the fifth frequency divider is electrically connected with the second switch; the sixth frequency divider is electrically connected with the fifth frequency divider; the first frequency band first receiving module is electrically connected with the sixth frequency divider and is electrically connected with a first frequency band third receiving port of the radio frequency transceiver; the second frequency band first receiving module is electrically connected with the sixth frequency divider, and the second frequency band first receiving module is electrically connected with a second frequency band third receiving port of the radio frequency transceiver; and the third frequency band first receiving module is electrically connected with the fifth frequency divider, and the third frequency band first receiving module is electrically connected with a third frequency band third receiving port of the radio frequency transceiver.
Further, the fourth radio frequency module includes: the seventh frequency divider is electrically connected with the third switch; the eighth frequency divider is electrically connected with the seventh frequency divider; the first frequency band second receiving module is electrically connected with the eighth frequency divider and is electrically connected with a first frequency band fourth receiving port of the radio frequency transceiver; the second frequency band second receiving module is electrically connected with the eighth frequency divider and is electrically connected with a second frequency band fourth receiving port of the radio frequency transceiver; and the third frequency band second receiving module is electrically connected with the seventh frequency divider, and the third frequency band second receiving module is electrically connected with a third frequency band fourth receiving port of the radio frequency transceiver.
Further, the first frequency divider of the first radio frequency module and the third frequency divider of the second radio frequency module are both three frequency dividers.
Further, the second frequency divider of the first radio frequency module, the fourth frequency divider of the second radio frequency module, the fifth frequency divider of the third radio frequency module, the sixth frequency divider of the third radio frequency module, the seventh frequency divider of the fourth radio frequency module, and the eighth frequency divider of the fourth radio frequency module are all frequency dividers.
Further, the frequency range covered by the first frequency band is 4400MHz-5925 MHz; the frequency range covered by the second frequency band is 3300MHz-4200 MHz; the frequency range covered by the third frequency band is 1452MHz-2960 MHz; and the frequency range covered by the fourth frequency band is 617MHz-960 MHz.
According to another aspect of the present invention, an embodiment of the present invention further provides a terminal device, where the terminal device includes the above-mentioned radio frequency front end circuit, radio frequency transceiver, and processor; the radio frequency transceiver comprises a receiving port and a transmitting port of a plurality of frequency bands, and is used for receiving or transmitting signals of the plurality of frequency bands; the processor is used for receiving signals of a plurality of frequency bands of the radio frequency front-end circuit through the radio frequency transceiver or transmitting the signals to the radio frequency transceiver.
The invention has the advantages that the whole radio frequency front-end circuit comprises a plurality of radio frequency modules and a switching module. Wherein, the first radio frequency circuit, the second radio frequency circuit, the third radio frequency circuit and the fourth radio frequency circuit which are composed of the frequency divider and the transceiver module can work independently, support the 2G/3G/4G/5GSub-6GHz frequency band of the main global operator, support the downlink 4x4 Multiple-Input Multiple-Output (MIMO), uplink 2x2MIMO, downlink 2x2MIMO, independent networking and non-independent networking double connection, etc., wherein, the switching module which is composed of a plurality of switches not only can support the channel detection reference signals which are transmitted and received by two times by 5G when the 5G is independently networked to be transmitted on four antennas, but also can meet the requirement that the channel detection reference signals which are transmitted and received by four times by one time by 5G when the 4G +5G is not independently networked to be transmitted on four antennas, therefore, the radio frequency front end circuit is suitable for the 2G/3G/4G/5G platform scheme, the integrated circuit has the advantages of high integration level, small circuit board area and low cost.
Drawings
The technical solution and other advantages of the present application will become apparent from the detailed description of the embodiments of the present application with reference to the accompanying drawings.
Fig. 1 is a schematic structural diagram of an rf front-end circuit according to an embodiment of the present invention.
Fig. 2 is a schematic structural diagram of an rf front-end circuit according to a second embodiment of the present invention.
Fig. 3 is a schematic structural diagram of an rf front-end circuit according to a third embodiment of the present invention.
Fig. 4 is a schematic structural diagram of a terminal device according to an embodiment of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, rather than all embodiments, and all other embodiments obtained by those skilled in the art without any inventive work based on the embodiments of the present invention belong to the protection scope of the present invention.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", and the like, indicate orientations and positional relationships based on those shown in the drawings, and are used only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be considered as limiting the present invention.
Furthermore, the terms "first", "second" 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, whereby features defined as "first", "second" may explicitly or implicitly include one or more of those features, in the description of the invention "plurality" means two or more unless explicitly defined otherwise.
As shown in fig. 1, a radio frequency front end circuit 1000 according to a first embodiment of the present invention includes: a switching module 500, and a plurality of rf modules (such as 100, 200, etc. in fig. 1).
The plurality of rf modules are electrically connected to the switching module 500, wherein each of the plurality of rf modules is configured to receive or transmit signals in a plurality of frequency bands, and at least one of the plurality of frequency bands received or transmitted by the plurality of rf modules is the same. The rf front-end circuit 1000 is electrically connected to an rf transceiver 600 and a plurality of antennas, respectively. The rf transceiver 600 is electrically connected to the rf modules, and is configured to receive or transmit signals of the multiple frequency bands. The antennas (e.g., the first antenna 710, the second antenna 720, the third antenna 730, and the fourth antenna 740) are electrically connected to the switching module 500.
As shown in fig. 2, the rf front-end circuit provided in the second embodiment of the present invention includes: a switching module 500 and a plurality of radio frequency modules (e.g., 100, 200, etc. in fig. 1). The rf front-end circuit 1000 is electrically connected to an rf transceiver 600 and a plurality of antennas, respectively. The rf transceiver 600 is electrically connected to the rf modules, and is configured to receive or transmit signals of the multiple frequency bands. The antennas (e.g., the first antenna 710, the second antenna 720, the third antenna 730, and the fourth antenna 740) are electrically connected to the switching module 500.
Specifically, a plurality of rf modules are electrically connected to the switching module 500, wherein each of the plurality of rf modules is configured to receive or transmit signals in a plurality of frequency bands, and at least one of the plurality of frequency bands received or transmitted by the plurality of rf modules is the same.
The plurality of radio frequency modules includes at least: a first rf module 100, a second rf module 200, a third rf module 300 and a fourth rf module 400. In some other embodiments, the number of the plurality of rf modules may not be limited thereto.
The first rf module 100 is electrically connected to the switching module 500, the second rf module 200 is electrically connected to the switching module 500, the third rf module 300 is electrically connected to the switching module 500, and the fourth rf module 400 is electrically connected to the switching module 500.
The first rf module 100, the second rf module 200, the third rf module 300, and the fourth rf module 400 can work independently and are electrically connected to an rf transceiver 600.
As shown in fig. 3, the rf front-end circuit provided in the third embodiment of the present invention includes: a switching module 500 and a plurality of radio frequency modules (e.g., 100, 200, etc. in fig. 1). The rf front-end circuit 1000 is electrically connected to an rf transceiver 600 and a plurality of antennas, respectively. The rf transceiver 600 is electrically connected to the rf modules, and is configured to receive or transmit signals of the multiple frequency bands. The antennas (e.g., the first antenna 710, the second antenna 720, the third antenna 730, and the fourth antenna 740) are electrically connected to the switching module 500.
The plurality of rf modules are electrically connected to the switching module 500, wherein each of the plurality of rf modules is configured to receive or transmit signals in a plurality of frequency bands, and at least one of the plurality of frequency bands received or transmitted by the plurality of rf modules is the same.
The plurality of radio frequency modules includes at least: a first rf module 100, a second rf module 200, a third rf module 300 and a fourth rf module 400.
The first rf module 100 is electrically connected to the switching module 500, the second rf module 200 is electrically connected to the switching module 500, the third rf module 300 is electrically connected to the switching module 500, and the fourth rf module 400 is electrically connected to the switching module 500.
The switching module 500 includes: a first switch 510, a second switch 520, and a third switch 530;
the first switch 510 is electrically connected to the first rf module 100 and the second rf module 200, the second switch 520 is electrically connected to the third rf module 300 and the first switch 510, and the third switch 530 is electrically connected to the fourth rf module 400 and the first switch 510.
In this embodiment, the first switch 510 is a double-pole four-throw switch (DP4T), the second switch 520 and the third switch 530 are single-pole double-throw Switches (SPDT), and the switching module 500 composed of the first switch 510, the second switch 520 and the third switch 530 can implement the following functions:
the transmission signal of the first rf module 100 may be transmitted to the first antenna 710 or the second antenna 720 through the first switch 510, may be transmitted to the third antenna 730 through the first switch 510 and the second switch 520, may be transmitted to the fourth antenna 740 through the first switch 510 and the third switch 530, and may be transmitted to only any one of the four antennas (e.g., the first antenna 710, the second antenna 720, the third antenna 730, and the fourth antenna 740) at a time.
The transmission signal of the second rf module 200 may be transmitted to the first antenna 710 or the second antenna 720 through the first switch 510, may be transmitted to the third antenna 730 through the first switch 510 and the second switch 520, may be transmitted to the fourth antenna 740 through the first switch 510 and the third switch 530, and may be transmitted to only any one of the four antennas at a time.
When the transmission signal of the first rf module 100 and the transmission signal of the second rf module 200 are simultaneously transmitted, two transmission signals may be transmitted to any two antennas among the four antennas.
The received signal of the first antenna 710 may be output to the first rf module 100 or the second rf module 200 through the first switch 510, the received signal of the second antenna 720 may be output to the second rf module 200 or the first rf module 100 through the first switch 510, the received signal of the third antenna 730 may be output to the third rf module 300 through the second switch 520, and the received signal of the fourth antenna 740 may be output to the fourth rf module 400 through the third switch 530.
Therefore, the switching module 500 may support the channel sounding reference signals of 5G two-transmission and four-reception to be transmitted on four antennas in turn when 5G (fifth generation communication technology) is independently networked, and may also meet the requirement that the channel sounding reference signals of 5G one-transmission and four-reception to be transmitted on four antennas in turn when 4G +5G is not independently networked.
The first rf module 100, the second rf module 200, the third rf module 300, and the fourth rf module 400 can work independently and are electrically connected to the rf transceiver. Therefore, each radio frequency module does not interfere with each other.
Wherein the radio frequency transceiver comprises a plurality of transmitting ports and receiving ports.
In the third embodiment, the first rf module 100 includes: a first frequency divider 110, a second frequency divider 120, a first frequency band first transceiver module 130, a second frequency band first transceiver module 140, a third frequency band first transceiver module 150, a fourth frequency band first transceiver module 160, and a power amplifier 170.
The first frequency divider 110 is electrically connected to the first switch 510, and the second frequency divider 120 is electrically connected to the first frequency divider 110. The first frequency band first transceiver module 130 is electrically connected to the second frequency divider 120, and the first frequency band first transceiver module 130 is electrically connected to the first frequency band first receiving port 611 and the first frequency band first transmitting port 612 of the rf transceiver 600. The second frequency band first transceiver module 140 is electrically connected to the second frequency divider 120, and the second frequency band first transceiver module 140 is electrically connected to the second frequency band first receiving port 613 and the second frequency band first transmitting port 614 of the rf transceiver 600, respectively. The third band first transceiver module 150 is electrically connected to the first frequency divider 110, and the third band first transceiver module 150 is electrically connected to the third band first receiving port 615 and the third band first transmitting port 616 of the rf transceiver 600, respectively. The fourth band first transceiver module 160 is electrically connected to the first frequency divider 110, and the fourth band first transceiver module 160 is electrically connected to the fourth band first receiving port 617 and the fourth band first transmitting port 618 of the rf transceiver 600, respectively. The third frequency band first transmitting port 616 and the fourth frequency band first transmitting port 617 are electrically connected to the third frequency band first transceiver module 150 and the fourth frequency band first transceiver module 160, respectively, through the power amplifier 170.
The power amplifier 170 is used for power amplification of fourth frequency band (e.g., B5, B8) and third frequency band (e.g., B2, B3) of 2G (second generation communication technology) signals.
The second rf module 200 includes: a third frequency divider 210, a fourth frequency divider 220, a first frequency band second transceiver module 230, a second frequency band second transceiver module 240, a third frequency band second transceiver module 250, and a fourth frequency band second transceiver module 260.
The third frequency divider 210 is electrically connected to the first switch 510, and the fourth frequency divider 220 is electrically connected to the third frequency divider 210. The first frequency band second transceiver module 230 is electrically connected to the fourth frequency divider 220, and the first frequency band second transceiver module 230 is electrically connected to the first frequency band second receiving port 621 and the first frequency band second transmitting port 622 of the radio frequency transceiver 600, respectively. The second frequency band second transceiving module 240 is electrically connected to the fourth frequency divider 220, and the second frequency band second transceiving module 240 is electrically connected to the second frequency band second receiving port 623 and the second frequency band second transmitting port 624 of the radio frequency transceiver 600, respectively. The third band second transceiver module 250 is electrically connected to the third frequency divider 210, and the third band second transceiver module 250 is electrically connected to the third band second receiving port 625 and the third band second transmitting port 626 of the rf transceiver 600, respectively. The fourth frequency band second transceiver module 260 is electrically connected to the third frequency divider 210, and the fourth frequency band second transceiver module 260 is electrically connected to the fourth frequency band second receiving port 627 and the fourth frequency band second transmitting port 628 of the radio frequency transceiver 600, respectively.
The third rf module 300 includes: a fifth frequency divider 310, a sixth frequency divider 320, a first band first receiving module 330, a second band first receiving module 340, and a third band first receiving module 350.
The fifth frequency divider 310 is electrically connected to the second switch 520, and the sixth frequency divider 320 is electrically connected to the fifth frequency divider 310. The first frequency band first receiving module 330 is electrically connected to the sixth frequency divider 320, and the first frequency band first receiving module 330 is electrically connected to the first frequency band third receiving port 631 of the radio frequency transceiver 600. The second frequency band first receiving module 340 is electrically connected to the sixth frequency divider 320, and the second frequency band first receiving module 340 is electrically connected to the second frequency band third receiving port 632 of the rf transceiver 600. The third frequency band first receiving module 350 is electrically connected to the fifth frequency divider 310, and the third frequency band first receiving module 350 is electrically connected to the third frequency band third receiving port 633 of the radio frequency transceiver 600.
The fourth rf module 400 includes: a seventh frequency divider 410, an eighth frequency divider 420, a first band second receiving module 430, a second band second receiving module 440, and a third band second receiving module 450.
The seventh frequency divider 410 is electrically connected to the third switch 530, and the eighth frequency divider 420 is electrically connected to the seventh frequency divider 410. The first frequency band second receiving module 430 is electrically connected to the eighth frequency divider 420, and the first frequency band second receiving module 430 is electrically connected to the first frequency band fourth receiving port 641 of the rf transceiver 600. The second frequency band second receiving module 440 is electrically connected to the eighth frequency divider 420, and the second frequency band second receiving module 440 is electrically connected to the second frequency band fourth receiving port 642 of the rf transceiver 600. The third band second receiving module 450 is electrically connected to the seventh frequency divider 410, and the third band second receiving module 450 is electrically connected to the third band fourth receiving port 643 of the rf transceiver 600.
In this embodiment, the first frequency divider 110 and the third frequency divider 210 are a Triplexer (Triplexer) capable of dividing a signal from an input port into three signals with different frequency ranges and outputting the three signals from three output ports. Conversely, signals from different frequency ranges from three output ports may be combined into one signal to be output from the input port. The three different frequency ranges of the first frequency divider 110 and the third frequency divider 210 correspond to the fourth frequency band, the third frequency band, and the second frequency band from the low frequency end to the high frequency end of the first frequency band, respectively.
In addition, in the present embodiment, the second frequency divider 120, the fourth frequency divider 220, the fifth frequency divider 310, the sixth frequency divider 320, the seventh frequency divider 410, and the eighth frequency divider 420 are two frequency dividers (diplexers) that can separate a signal from the input port into two signals of different frequency ranges and output the signals from the two output ports. Conversely, signals of different frequency ranges from two output ports may be combined into one signal to be output from the input port. Two different frequency ranges of the second frequency divider 120, the fourth frequency divider 220, the sixth frequency divider 320 and the eighth frequency divider 420 correspond to the second frequency band and the first frequency band, respectively. The two different frequency ranges of the fifth frequency divider 310 and the seventh frequency divider 410 correspond to the low frequency end of the third frequency band and the high frequency end of the second frequency band respectively.
The frequency range covered by the first frequency band is 4400-5925 MHz, the frequency range covered by the second frequency band is 3300-4200 MHz, the frequency range covered by the third frequency band is 1452-2960 MHz, and the frequency range covered by the fourth frequency band is 617-960 MHz.
The fourth frequency band first transceiver module 160 is a PAMiD device with high integration level, and includes a fourth frequency band first transmitter circuit and a fourth frequency band first receiver circuit, which are formed by a fourth frequency band power amplifier, a low noise amplifier, a switch, a duplexer, a filter, a coupler, and the like.
The fourth frequency band second transceiver module 260 is a PAMiD device with high integration level, and includes a fourth frequency band second transmitter circuit and a fourth frequency band second receiver circuit, which are formed by a fourth frequency band power amplifier, a low noise amplifier, a switch, a duplexer, a filter, a coupler, and the like.
The third frequency band first transceiver module 150 is a PAMiD device with high integration level, and includes a third frequency band first transmitter circuit and a third frequency band first receiver circuit formed by a third frequency band power amplifier, a low noise amplifier, a switch, a duplexer, a filter, a coupler, and the like.
The third-band second transceiver module 250 is a PAMiD device with high integration level, and includes a third-band second transmitting circuit and a third-band second receiving circuit formed by a third-band power amplifier, a low noise amplifier, a switch, a duplexer, a filter, a coupler, and the like.
The second frequency band first transceiver module 140 is a PAMiD device with high integration level, and includes a second frequency band first transmitter circuit and a second frequency band first receiver circuit, which are composed of devices such as a second frequency band power amplifier, a low noise amplifier, a switch, a filter, and a coupler.
The second frequency band second transceiver module 240 is a PAMiD device with high integration level, and includes a second frequency band second transmitter circuit and a second frequency band second receiver circuit, which are composed of devices such as a second frequency band power amplifier, a low noise amplifier, a switch, a filter, and a coupler.
The first transceiver module 130 in the first frequency band is a PAMiD device with high integration level, and includes a first transmitting circuit in the first frequency band and a first receiving circuit in the first frequency band, which are composed of a power amplifier in the first frequency band, a low noise amplifier, a switch, a filter, a coupler, and the like.
The first frequency band second transceiver module 230 is a PAMiD device with high integration level, and includes a first frequency band second transmitter circuit and a first frequency band second receiver circuit, which are composed of a first frequency band power amplifier, a low noise amplifier, a switch, a filter, a coupler, and the like.
The third frequency band third receiving module 350 is a receiving device with high integration level, and includes a third frequency band third receiving circuit composed of devices such as a third frequency band low noise amplifier, a switch, and a filter.
The third-band fourth receiving module 450 is a high-integration receiving device, and includes a third-band fourth receiving circuit formed by devices such as a third-band low-noise amplifier, a switch, and a filter.
The second frequency band third receiving module 340 is a receiving device with high integration level, and includes a second frequency band third receiving circuit composed of devices such as a second frequency band low noise amplifier, a switch and a filter.
The second band fourth receiving module 440 is a receiving device with high integration level, and includes a second band fourth receiving circuit composed of devices such as a second band low noise amplifier, a switch, and a filter.
The first frequency band third receiving module 330 is a receiving device with high integration level, and includes a first frequency band third receiving circuit composed of a first frequency band low noise amplifier, a switch, a filter, and the like.
The first frequency band fourth receiving module 430 is a receiving device with high integration level, and includes a first frequency band fourth receiving circuit composed of devices such as a first frequency band low noise amplifier, a switch, and a filter.
Because the fourth frequency band first receiving circuit and the fourth frequency band second receiving circuit in the radio frequency front-end circuit can work simultaneously, downlink 2x2MIMO receiving of the fourth frequency band can be realized.
Similarly, since the first receiving circuit in the third frequency band, the second receiving circuit in the third frequency band, the third receiving circuit in the third frequency band, and the fourth receiving circuit in the third frequency band in the rf front-end circuit may operate simultaneously, downlink 4x4MIMO reception in the third frequency band may be implemented.
Similarly, since the first receiving circuit in the second frequency band, the second receiving circuit in the second frequency band, the third receiving circuit in the second frequency band, and the fourth receiving circuit in the second frequency band in the rf front-end circuit may operate simultaneously, downlink 4x4MIMO reception in the second frequency band may be implemented.
Similarly, since the first receiving circuit in the first frequency band, the second receiving circuit in the first frequency band, the third receiving circuit in the first frequency band, and the fourth receiving circuit in the first frequency band in the rf front-end circuit may operate simultaneously, downlink 4x4MIMO reception in the first frequency band may be implemented.
In addition, because the fourth frequency band first transmitting circuit and the fourth frequency band second transmitting circuit in the radio frequency front-end circuit can work simultaneously, uplink 2x2MIMO transmission of the fourth frequency band can be realized.
The first transmitting circuit of the third frequency band and the second transmitting circuit of the third frequency band in the radio frequency front-end circuit can work simultaneously, so that uplink 2x2MIMO transmission of the third frequency band can be realized.
The first transmitting circuit of the second frequency band and the second transmitting circuit of the second frequency band in the radio frequency front-end circuit can work simultaneously, so that uplink 2x2MIMO transmission of the second frequency band can be realized.
A first transmitting circuit of a first frequency band and a second transmitting circuit of the first frequency band in the radio frequency front-end circuit can work simultaneously, so that uplink 2x2MIMO transmission of the first frequency band can be realized.
The invention has the advantage that the whole radio frequency front-end circuit comprises a plurality of radio frequency modules and a switching module. Wherein, the first radio frequency circuit, the second radio frequency circuit, the third radio frequency circuit and the fourth radio frequency circuit which are composed of the frequency divider and the transceiver module can work independently, support the 2G/3G/4G/5G Sub-6GHz frequency band of the main global operator, support the downlink 4x4 Multiple-Input Multiple-Output (MIMO), uplink 2x2MIMO, downlink 2x2MIMO, independent networking and non-independent networking double connection, etc., wherein, the switching module which is composed of a plurality of switches can not only support the channel detection reference signals which are transmitted and received by two times by 5G when the 5G is independently networked to be transmitted on four antennas, but also can meet the channel detection reference signals which are transmitted and received by four times by one time by 5G when the 4G +5G is not independently networked to be transmitted on four antennas, therefore, the radio frequency front end circuit is suitable for the 2G/3G/4G/5G platform scheme, the integrated circuit has the advantages of high integration level, small circuit board area and low cost.
As shown in fig. 4, the terminal device 2000 of the present embodiment includes an antenna, a radio frequency front end circuit 1000, a radio frequency transceiver 600, a processor 800, a fifth antenna 750, and a WiFi transceiver 751. The antennas include a first antenna 710, a second antenna 720, a third antenna 730, and a fourth antenna 740.
As shown in fig. 4, the rf transceiver 600 is connected to the processor 800, the fifth antenna 750 is a WiFi antenna, the fifth antenna is connected to the WiFi transceiver 751, and the WiFi transceiver 751 is connected to the processor 800. Further, a SIM card interface 752, an SD card interface 753, a USB interface 754, a memory 810, an audio device 820, a camera 830, a display 840, a sensor 850, and a power management chip 860 of the terminal are all connected to the processor 800, and a crystal 861 and a battery 862 are respectively connected to the power management chip 860.
The terminal device 2000 can help the user to send and receive e-mail, browse web pages, access streaming media, etc. through the WiFi transceiver 751, which provides the user with wireless broadband internet access.
The processor 800 is a control center of the terminal device 2000, connects various parts of the entire mobile phone by using various interfaces and lines, and performs various functions of the terminal device 2000 and processes data by operating or executing software programs and/or modules stored in the memory 810 and calling data stored in the memory 810, thereby integrally monitoring the mobile phone. Optionally, processor 800 may include one or more processing cores. In some embodiments, processor 800 may integrate an application processor, which primarily handles operating systems, user interfaces, applications, etc., and a modem processor, which primarily handles wireless communications. It will be appreciated that the modem processor described above may not be integrated into the processor 800.
Terminal device 2000 may also include a power supply (e.g., battery 862) to provide power to various components, which in some embodiments may be logically coupled to processor 800 via a power management system to provide management of charging, discharging, and power consumption via the power management system. The power supply may also include any component of one or more dc or ac power sources, recharging systems, power failure detection circuitry, power converters or inverters, power status indicators, and the like.
In summary, although the present invention has been described with reference to the preferred embodiments, the above-described preferred embodiments are not intended to limit the present invention, and those skilled in the art can make various changes and modifications without departing from the spirit and scope of the present invention, therefore, the scope of the present invention shall be determined by the appended claims.
Claims (10)
1. A radio frequency front end circuit, comprising:
a switching module;
and the radio frequency modules are electrically connected with the switching module, wherein each radio frequency module is used for receiving or sending signals of a plurality of frequency bands, and at least one frequency band in the plurality of frequency bands received or sent by the radio frequency modules is the same.
2. The rf front-end circuit of claim 1, wherein the plurality of rf modules comprises at least:
the first radio frequency module is electrically connected with the switching module;
the second radio frequency module is electrically connected with the switching module;
the third radio frequency module is electrically connected with the switching module;
a fourth RF module electrically connected to the switching module
The switching module includes: a first switch, a second switch and a third switch;
the first switch is electrically connected with the first radio frequency module and the second radio frequency module respectively;
the second switch is electrically connected with the third radio frequency module and the first switch respectively;
the third switch is electrically connected with the fourth radio frequency module and the first switch respectively;
the first radio frequency module, the second radio frequency module, the third radio frequency module and the fourth radio frequency module can work independently and are electrically connected with a radio frequency transceiver.
3. The rf front-end circuit of claim 2, wherein the first rf module comprises:
the first frequency divider is electrically connected with the first switch;
the second frequency divider is electrically connected with the first frequency divider;
the first frequency band first transceiver module is electrically connected with the second frequency divider, and the first frequency band first transceiver module is electrically connected with a first frequency band first receiving port and a first frequency band first transmitting port of the radio frequency transceiver;
the second frequency band first transceiver module is electrically connected with the second frequency divider, and the second frequency band first transceiver module is electrically connected with a second frequency band first receiving port and a second frequency band first transmitting port of the radio frequency transceiver;
the third frequency band first transceiver module is electrically connected with the first frequency divider, and the third frequency band first transceiver module is electrically connected with a third frequency band first receiving port and a third frequency band first transmitting port of the radio frequency transceiver;
the fourth frequency band first transceiving module is electrically connected with the first frequency divider, and the fourth frequency band first transceiving module is electrically connected with a fourth frequency band first receiving port and a fourth frequency band first transmitting port of the radio frequency transceiver; and
and the third frequency band first transmitting port and the fourth frequency band first transmitting port are electrically connected with the third frequency band first receiving and transmitting module and the fourth frequency band first receiving and transmitting module respectively through the power amplifier.
4. The rf front-end circuit of claim 2, wherein the second rf module comprises:
the third frequency divider is electrically connected with the first switch;
the fourth frequency divider is electrically connected with the third frequency divider;
the first frequency band second transceiver module is electrically connected with the fourth frequency divider, and the first frequency band second transceiver module is electrically connected with a first frequency band second receiving port and a first frequency band second transmitting port of the radio frequency transceiver;
the second frequency band second transceiver module is electrically connected with the fourth frequency divider, and the second frequency band second transceiver module is electrically connected with a second frequency band second receiving port and a second frequency band second transmitting port of the radio frequency transceiver;
the third frequency band second transceiver module is electrically connected with the third frequency divider, and the third frequency band second transceiver module is electrically connected with a third frequency band second receiving port and a third frequency band second transmitting port of the radio frequency transceiver; and
and the fourth frequency band second transceiver module is electrically connected with a fourth frequency band second receiving port and a fourth frequency band second transmitting port of the radio frequency transceiver.
5. The rf front-end circuit of claim 2, wherein the third rf module comprises:
the fifth frequency divider is electrically connected with the second switch;
the sixth frequency divider is electrically connected with the fifth frequency divider;
the first frequency band first receiving module is electrically connected with the sixth frequency divider and is electrically connected with a first frequency band third receiving port of the radio frequency transceiver;
the second frequency band first receiving module is electrically connected with the sixth frequency divider, and the second frequency band first receiving module is electrically connected with a second frequency band third receiving port of the radio frequency transceiver; and
and the third frequency band first receiving module is electrically connected with a third frequency band third receiving port of the radio frequency transceiver.
6. The rf front-end circuit of claim 2, wherein the fourth rf module comprises:
the seventh frequency divider is electrically connected with the third switch;
the eighth frequency divider is electrically connected with the seventh frequency divider;
the first frequency band second receiving module is electrically connected with the eighth frequency divider and is electrically connected with a first frequency band fourth receiving port of the radio frequency transceiver;
the second frequency band second receiving module is electrically connected with the eighth frequency divider and is electrically connected with a second frequency band fourth receiving port of the radio frequency transceiver; and
and the third frequency band second receiving module is electrically connected with a third frequency band fourth receiving port of the radio frequency transceiver.
7. The radio frequency front end circuit of claim 2, wherein the first frequency divider of the first radio frequency module and the third frequency divider of the second radio frequency module are both three frequency dividers.
8. The radio frequency front-end circuit of claim 2, wherein the second frequency divider of the first radio frequency module, the fourth frequency divider of the second radio frequency module, the fifth frequency divider of the third radio frequency module, the sixth frequency divider of the third radio frequency module, the seventh frequency divider of the fourth radio frequency module, and the eighth frequency divider of the fourth radio frequency module are all frequency dividers.
9. The RF front-end circuit of claim 3 or 4, wherein the first frequency band covers a frequency range of 4400MHz-5925 MHz;
the frequency range covered by the second frequency band is 3300MHz-4200 MHz;
the frequency range covered by the third frequency band is 1452MHz-2960 MHz; and
the frequency range covered by the fourth frequency band is 617MHz-960 MHz.
10. A terminal device comprising a radio frequency front end circuit, a radio frequency transceiver and a processor according to any one of claims 1 to 9;
the radio frequency transceiver comprises a receiving port and a transmitting port of a plurality of frequency bands, and is used for receiving or transmitting signals of the plurality of frequency bands;
the processor is used for receiving signals of a plurality of frequency bands of the radio frequency front-end circuit through the radio frequency transceiver or transmitting the signals to the radio frequency transceiver.
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| CN201911035784.0A CN110808757A (en) | 2019-10-29 | 2019-10-29 | Radio frequency front-end circuit and terminal equipment |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201911035784.0A CN110808757A (en) | 2019-10-29 | 2019-10-29 | Radio frequency front-end circuit and terminal equipment |
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