CN109861735A - A kind of RF front-end circuit and mobile terminal - Google Patents
A kind of RF front-end circuit and mobile terminal Download PDFInfo
- Publication number
- CN109861735A CN109861735A CN201910222066.8A CN201910222066A CN109861735A CN 109861735 A CN109861735 A CN 109861735A CN 201910222066 A CN201910222066 A CN 201910222066A CN 109861735 A CN109861735 A CN 109861735A
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- fixed end
- throw switch
- circuit
- antenna
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Classifications
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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
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
- H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
- H04B7/0404—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas the mobile station comprising multiple antennas, e.g. to provide uplink diversity
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
- H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
- H04B7/06—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
- H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
- H04B7/08—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the receiving station
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- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Transceivers (AREA)
- Input Circuits Of Receivers And Coupling Of Receivers And Audio Equipment (AREA)
Abstract
The present invention provides a kind of RF front-end circuit and mobile terminal.The circuit includes: the first double-point double-throw switch；First signal receiving circuit is connect by the first double-point double-throw switch with one of first antenna and the second antenna, and the antenna by being connected receives signal；Second double-point double-throw switch；Second signal receives circuit and is connect by the second double-point double-throw switch with one of third antenna and the 4th antenna, and the antenna by being connected receives signal；Third double-point double-throw switch is connect with the first double-point double-throw switch and the second double-point double-throw switch respectively；First radio circuit is connect with third double-point double-throw switch, comprising: signal receiving modes or signal emission mode；Second radio circuit is connect with third double-point double-throw switch, comprising: signal receiving modes or signal emission mode.Circuit design of the invention is simple, on the basis of realizing that signal emits and/or is received, can shorten radio frequency layout cabling, to reduce path differential loss.
Description
Technical field
The present embodiments relate to terminal applies technical field more particularly to a kind of RF front-end circuits and mobile terminal.
Background technique
As the fast development of Internet communication technology and the continuous of mobile intelligent terminal are popularized, user is to data flow
The demand of amount is also being continuously increased.It is 100Mbps~1Gbps from the transmission rate of 4G, the hardware circuit solution to 5G NR is reachable
20Gbps, the promotion of rate require 5G indispensability 4*4 multiple-input, multiple-output (Multiple Input Multiple Output, MIMO) to close
Key technology.
As shown in Figure 1, the structural schematic diagram of the RF front-end circuit for 5G mobile terminal device, the circuit framework is for real
The existing hair of one transmitter and four receivers 1T4R and two four receives 2T4R, wherein and the layout cabling of 5G mobile terminal device directly influences path differential loss,
As shown in Figure 1, the RF front-end circuit structure of existing 5G mobile terminal device, walks wire length, cause path differential loss high.In addition,
The RF front-end circuit structure of existing 5G mobile terminal device is often used three knives, three throw switch, and signal transmission frequencies are higher, bandwidth
It is bigger, cause element differential loss bigger, and also increase the realization difficulty for making output power reach specification.Therefore, how to reduce
The complexity of path differential loss, element differential loss and reduction circuit design becomes urgent problem to be solved.
Summary of the invention
The embodiment of the present invention provides a kind of RF front-end circuit and mobile terminal, to solve existing 5G mobile terminal device
RF front-end circuit structure, walks wire length, the problem for causing path differential loss high.
In order to solve the above-mentioned technical problem, the present invention is implemented as follows:
In a first aspect, the embodiment provides a kind of RF front-end circuits, comprising:
First double-point double-throw switch；
First signal receiving circuit, by first double-point double-throw switch, in first antenna and the second antenna
The connection of one target antenna, and signal is received by the first object antenna；
Second double-point double-throw switch；
Second signal receives circuit, passes through the in second double-point double-throw switch, with third antenna and the 4th antenna
The connection of two target antennas, and signal is received by second target antenna；
Third double-point double-throw switch connects with first double-point double-throw switch and second double-point double-throw switch respectively
It connects；
First radio circuit is connect with the third double-point double-throw switch, comprising: signal receiving modes or signal transmitting
Mode；
Second radio circuit is connect with the third double-point double-throw switch, comprising: signal receiving modes or signal transmitting
Mode.
Second aspect, the embodiments of the present invention also provide a kind of mobile terminals, comprising:
Controller；And
RF front-end circuit as described in above-described embodiment；
Wherein, the controller is used to control the opening and closing of the opening and closing of the first double-point double-throw switch, the second double-point double-throw switch
And/or the opening and closing of third double-point double-throw switch.
In the above scheme of the embodiment of the present invention, by respectively with the first double-point double-throw switch and the second double-point double-throw switch
The third double-point double-throw switch of connection, wherein the first double-point double-throw switch is also believed with first antenna, the second antenna and first respectively
Number receive circuit connection, the second double-point double-throw switch also respectively with third antenna, the 4th antenna and second signal receive circuit connect
It connects, enables the first radio circuit connecting respectively with third double-point double-throw switch and the second radio circuit neatly by appointing
One antenna receives signal and/or transmitting signal, this circuit design is simple, on the basis of realizing that signal emits and/or is received, energy
Enough shorten radio frequency and be laid out cabling, to reduce path differential loss.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of RF front-end circuit in the prior art；
Fig. 2 is the structural schematic diagram of RF front-end circuit provided in an embodiment of the present invention.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are some of the embodiments of the present invention, instead of all the embodiments.Based on this hair
Embodiment in bright, every other implementation obtained by those of ordinary skill in the art without making creative efforts
Example, shall fall within the protection scope of the present invention.
As shown in Fig. 2, being the structural schematic diagram of RF front-end circuit provided in an embodiment of the present invention.The RF front-end circuit
It include: the first double-point double-throw switch 1；First signal receiving circuit 2, by the first double-point double-throw switch 1, with first antenna 3 and
First object antenna connection in second antenna 4, and signal is received by first object antenna；Second double-point double-throw switch 5；The
Binary signal receives circuit 6, by the second double-point double-throw switch 5, with the second target antenna in third antenna 7 and the 4th antenna 8
Connection, and signal is received by the second target antenna；Third double-point double-throw switch 9, respectively with the first double-point double-throw switch 1 and
The connection of two double-point double-throw switch 5；First radio circuit 10, connect, comprising: signal receiving modes with third double-point double-throw switch 9
Or signal emission mode；Second radio circuit 11, connect with third double-point double-throw switch 9, comprising: signal receiving modes or
Signal emission mode.
Here, first object antenna is first antenna 3 or the second antenna 4.Second target antenna is third antenna 7 or the 4th
Antenna 8.
It should be noted that double-point double-throw switch element differential loss itself is small and isolation is good, the present invention selects double-pole double throw
Switch, i.e. the first double-point double-throw switch 1, the second double-point double-throw switch 5 and third double-point double-throw switch 9 can not only be promoted and be penetrated
The emitting performance of frequency front-end circuit, additionally it is possible to promote the receptivity of RF front-end circuit.
Here, by opened respectively with the first double-pole double throw 1 and second the third double-pole double throw that connect of double-point double-throw switch 5 open
9 are closed, wherein the first double-point double-throw switch 1 is also connect with first antenna 3, the second antenna 4 and the first signal receiving circuit 2 respectively,
Second double-point double-throw switch 5 also receives circuit 6 with third antenna 7, the 4th antenna 8 and second signal respectively and connect, so that respectively
The first radio circuit 10 and the second radio circuit 11 connecting with third double-point double-throw switch 9 can neatly pass through any antenna
Signal and/or transmitting signal are received, this circuit design is simple, on the basis of realizing that signal emits and/or is received, can shorten
Radio frequency is laid out cabling, to reduce path differential loss.
Here, the first double-point double-throw switch 1 includes: the first movable end, the second movable end, the first fixed end and the second fixed end,
Wherein, the first movable end connects the first signal receiving circuit 2, and the first fixed end connects first antenna 3, and the second fixed end connects second day
Line 4.
Here, the first double-point double-throw switch 1 is also used for connecting the first movable end with the first fixed end or the second fixed end
In connecting the second movable end with the first fixed end or the second fixed end.
Second double-point double-throw switch 5 includes: third movable end, the 4th movable end, third fixed end and the 4th fixed end, wherein
Third movable end connects second signal and receives circuit 6, and third fixed end connects third antenna 7, and the 4th fixed end connects the 4th antenna 8.
Here, the second double-point double-throw switch 5 is also used for connecting third movable end with third fixed end or the 4th fixed end
It is connect in the 4th movable end with third fixed end or the 4th fixed end.
Third double-point double-throw switch 9 includes: the 5th movable end, the 6th movable end, the 5th fixed end and the 6th fixed end, wherein
5th movable end connects the first radio circuit 10, and the 6th movable end connects the second radio circuit 11, and the 5th fixed end connection second is living
Moved end, the 6th fixed end connect the 4th movable end.
Here, third double-point double-throw switch 9 is also used for connecting the 5th movable end with the 5th fixed end or the 6th fixed end
In connecting the 6th movable end with the 5th fixed end or the 6th fixed end.
Optionally, as shown in Fig. 2, first radio circuit 10 includes: that the first low-noise amplifier 12, the first power are put
Big device 13, first switches switch 14 and switches switch 14 with the 5th movable end of third double-point double-throw switch 9 and first respectively
The first filter 15 of connection.
Specifically, the first low-noise amplifier 12 is connect by the first switching switch 14 with first filter 15, and third
5th movable end of double-point double-throw switch 9 is connected to its 5th fixed end, and the second movable end of the first double-point double-throw switch 1 and its
When first fixed end is connected to the wherein fixed end in the second fixed end, the first radio circuit 10 is in signal receiving modes.
Alternatively, the first low-noise amplifier 12 is connect by the first switching switch 14 with first filter 15, and third is double
5th movable end of double-pole double throw switch 9 is connected to its 6th fixed end, and the 4th movable end of the second double-point double-throw switch 5 and its
With when wherein a fixed end is connected in the 4th fixed end, the first radio circuit 10 is in signal receiving modes for three fixed ends.
It should be noted that the first low-noise amplifier 12 is connect by the first switching switch 14 with first filter 15
When, the first low-noise amplifier 12 forms signal receiving circuit with first filter 15.
It based on this, is connected in the 5th movable end of third double-point double-throw switch 9 with its 5th fixed end, and the first double-pole double throw
When second movable end of switch 1 is connected to the wherein fixed end in its first fixed end and the second fixed end, due to the first double-pole double throw
First fixed end of switch 1 is connect with first antenna 3, and the second fixed end is connect with the second antenna 4, so the signal receiving circuit can lead to
The wherein antenna crossed in first antenna 3 and the second antenna 4 receives signal.
It is connected in the 5th movable end of third double-point double-throw switch 9 with its 6th fixed end, and the second double-point double-throw switch 5
4th movable end with when wherein a fixed end is connected in its third fixed end and the 4th fixed end, due to the of the second double-point double-throw switch 5
Three fixed ends are connect with third antenna 7, and the 4th fixed end is connect with the 4th antenna 8, so the signal receiving circuit can pass through third day
A wherein antenna in line 7 and the 4th antenna 8 receives signal.
Here, the signal receiving circuit of the first radio circuit 10 by respectively with the first double-point double-throw switch 1 and second pair
The third double-point double-throw switch 9 that double-pole double throw switch 5 connects neatly can receive signal by any antenna, so as to shorten
Radio frequency is laid out cabling, reduces path differential loss.
In one example, if the first signal receiving circuit is connect by the first double-point double-throw switch 1 with first antenna 3, the
Binary signal receives circuit and is connect with third antenna 7 by the second double-point double-throw switch 5, then by the first low-noise amplifier 12 and the
The signal receiving circuit that one filter 15 is formed can pass through third double-point double-throw switch 9 and the first double-point double-throw switch 1 and second
Antenna 4 connects, alternatively, the signal receiving circuit formed with first filter 15 by the first low-noise amplifier 12 can also be by the
Three double-point double-throw switch 9 and the second double-point double-throw switch 5 are connect with the 4th antenna 8.
Specifically, the first power amplifier 13 is connect by the first switching switch 14 with first filter 15, and third is double
5th movable end of double-pole double throw switch 9 is connected to its 5th fixed end, and the second movable end of the first double-point double-throw switch 1 and its
When one fixed end is connected to the wherein fixed end in the second fixed end, the first radio circuit 10 is in signal emission mode；
Alternatively, the first power amplifier 13 is connect by the first switching switch 14 with first filter 15, and third double-pole
5th movable end of commutator 9 is connected to its 6th fixed end, and the 4th movable end of the second double-point double-throw switch 5 and its third
When fixed end is connected to the wherein fixed end in the 4th fixed end, the first radio circuit 10 is in signal emission mode.
It should be noted that when the first power amplifier 13 is connect by the first switching switch 14 with first filter 15,
First power amplifier 13 forms signal transmission circuit with first filter 15.
It based on this, is connected in the 5th movable end of third double-point double-throw switch 9 with its 5th fixed end, and the first double-pole double throw
When second movable end of switch 1 is connected to the wherein fixed end in its first fixed end and the second fixed end, due to the first double-pole double throw
First fixed end of switch 1 is connect with first antenna 3, and the second fixed end is connect with the second antenna 4, so the signal transmission circuit can lead to
Cross the wherein antenna transmitting signal in first antenna 3 and the second antenna 4.
It is connected in the 5th movable end of third double-point double-throw switch 9 with its 6th fixed end, and the second double-point double-throw switch 5
4th movable end with when wherein a fixed end is connected in its third fixed end and the 4th fixed end, due to the of the second double-point double-throw switch 5
Three fixed ends are connect with third antenna 7, and the 4th fixed end is connect with the 4th antenna 8, so the signal transmission circuit can pass through third day
A wherein antenna in line 7 and the 4th antenna 8 emits signal.
Here, the signal transmission circuit of the first radio circuit 10 by respectively with the first double-point double-throw switch 1 and second pair
The third double-point double-throw switch 9 that double-pole double throw switch 5 connects neatly can emit signal by any antenna, so as to shorten
Radio frequency is laid out cabling, reduces path differential loss.
In one example, if the first signal receiving circuit is connect by the first double-point double-throw switch 1 with first antenna 3, the
Binary signal receives circuit and is connect by the second double-point double-throw switch 5 with third antenna 7, then by the first power amplifier 13 and first
Filter 15, which forms signal transmission circuit, can pass through third double-point double-throw switch 9 and the first double-point double-throw switch 1 and the second antenna 4
Connection, alternatively, forming signal transmission circuit with first filter 15 by the first power amplifier 13 can also be double by third double-pole
Throw switch 9 and the second double-point double-throw switch 5 are connect with the 4th antenna 8.
Here, optionally, the first switching switch 14 is single-pole double-throw switch (SPDT), including a movable end and two fixed ends.Wherein,
Its movable end is connect with first filter 15, wherein a fixed end is connect with the input terminal of the first low-noise amplifier 12, Ling Yiding
End is connect with the output end of the first power amplifier 13.
Optionally, as shown in Fig. 2, second radio circuit 11 includes: that the second low-noise amplifier 16, the second power are put
Big device 17, second switches switch 18 and switches switch 18 with the 6th movable end of third double-point double-throw switch 9 and second respectively
The second filter 19 of connection.
Specifically, the second low-noise amplifier 16 is connect by the second switching switch 18 with second filter 19, and third
6th movable end of double-point double-throw switch 9 is connected to its 5th fixed end, and the second movable end of the first double-point double-throw switch 1 and its
When first fixed end is connected to the wherein fixed end in second fixed end, the second radio circuit 11 is in signal receiving modes.
Alternatively, the second low-noise amplifier 16 is connect by the second switching switch 18 with second filter 19, and third is double
6th movable end of double-pole double throw switch 9 is connected to its 6th fixed end, and the 4th movable end of the second double-point double-throw switch 5 and its
When three fixed ends are connected to the wherein fixed end in the 4th fixed end, the second radio circuit 11 is in signal receiving modes.
It should be noted that when the second low-noise amplifier 16 is connect by the second switching switch 18 with second filter 19,
Second low-noise amplifier 16 forms signal receiving circuit with second filter 19.
It based on this, is connected in the 6th movable end of third double-point double-throw switch 9 with its 5th fixed end, and the first double-pole double throw
When second movable end of switch 1 is connected to the wherein fixed end in its first fixed end and second fixed end, due to the first double-pole
First fixed end of commutator 1 is connect with first antenna 3, and the second fixed end is connect with the second antenna 4, so the signal receiving circuit
Signal can be received by the wherein antenna in first antenna 3 and the second antenna 4.
It is connected in the 6th movable end of third double-point double-throw switch 9 with its 6th fixed end, and the second double-point double-throw switch 5
When 4th movable end is connected to the wherein fixed end in its third fixed end and the 4th fixed end, due to the second double-point double-throw switch 5
Third fixed end is connect with third antenna 7, and the 4th fixed end is connect with the 4th antenna 8, so the signal receiving circuit can pass through third
A wherein antenna in antenna 7 and the 4th antenna 8 receives signal.
Here, the signal receiving circuit of the second radio circuit 11 by respectively with the first double-point double-throw switch 1 and second pair
The third double-point double-throw switch 9 that double-pole double throw switch 5 connects neatly can receive signal by any antenna, so as to shorten
Radio frequency is laid out cabling, reduces path differential loss.
In one example, if the first signal receiving circuit is connect by the first double-point double-throw switch 1 with first antenna 3, the
Binary signal receives circuit and is connect with third antenna 7 by the second double-point double-throw switch 5, the first radio circuit 10 by with second day
Line 4 connects, then forms signal receiving circuit with second filter 19 by the second low-noise amplifier 16 and pass through third double-pole double throw
Switch 9 and the second double-point double-throw switch 5 are connect with the 4th antenna 8.
In another example, if the first signal receiving circuit is connect by the first double-point double-throw switch 1 with first antenna 3,
Second signal receives circuit and is connect by the second double-point double-throw switch 5 with third antenna 7, and the first radio circuit 10 is double by third
Double-pole double throw switch 9 and the second double-point double-throw switch 5 are connect with the 4th antenna 8, then by the second low-noise amplifier 16 and the second filter
Wave device 19 forms signal receiving circuit and is connected by third double-point double-throw switch 9 and the first double-point double-throw switch 1 and the second antenna 4
It connects.
Specifically, the second power amplifier 17 is connect by the second switching switch 18 with second filter 19, and third is double
6th movable end of double-pole double throw switch 9 is connected to its 5th fixed end, and the second movable end of the first double-point double-throw switch 1 and its
When one fixed end is connected to the wherein fixed end in the second fixed end, the second radio circuit 11 is in signal emission mode.
Alternatively, the second power amplifier 17 is connect by the second switching switch 18 with second filter 19, and third double-pole
6th movable end of commutator 9 is connected to its 6th fixed end, and the 4th movable end of the second double-point double-throw switch 5 and its third
When fixed end is connected to the wherein fixed end in the 4th fixed end, the second radio circuit 11 is in signal emission mode.
It should be noted that when the second power amplifier 17 is connect by the second switching switch 18 with second filter 19,
Second power amplifier 17 forms signal transmission circuit with second filter 19.
It based on this, is connected in the 6th movable end of third double-point double-throw switch 9 with its 5th fixed end, and the first double-pole double throw
When second movable end of switch 1 is connected to the wherein fixed end in its first fixed end and the second fixed end, due to the first double-pole double throw
First fixed end of switch 1 is connect with first antenna 3, and the second fixed end is connect with the second antenna 4, so the signal transmission circuit can lead to
Cross the wherein antenna transmitting signal in first antenna 3 and the second antenna 4.
It is connected in the 6th movable end of third double-point double-throw switch 9 with its 6th fixed end, and the second double-point double-throw switch 5
When 4th movable end is connected to the wherein fixed end in its third fixed end and the 4th fixed end, due to the second double-point double-throw switch 5
Third fixed end is connect with third antenna 7, and the 4th fixed end is connect with the 4th antenna 8, so the signal transmission circuit can pass through third
A wherein antenna in antenna 7 and the 4th antenna 8 emits signal.
Here, the signal transmission circuit of the second radio circuit 11 by respectively with the first double-point double-throw switch 1 and second pair
The third double-point double-throw switch 9 that double-pole double throw switch 5 connects neatly can emit signal by any antenna, so as to shorten
Radio frequency is laid out cabling, reduces path differential loss.
In one example, if the first signal receiving circuit is connect by the first double-point double-throw switch 1 with first antenna 3, the
Binary signal receives circuit and is connect with third antenna 7 by the second double-point double-throw switch 5, the first radio circuit 10 by with second day
Line 4 connects, then forms signal transmission circuit with second filter 19 by the second power amplifier 17 and opened by third double-pole double throw
Pass 9 and the second double-point double-throw switch 5 are connect with the 4th antenna 8.
In another example, if the first signal receiving circuit is connect by the first double-point double-throw switch 1 with first antenna 3,
Second signal receives circuit and is connect by the second double-point double-throw switch 5 with third antenna 7, and the first radio circuit 10 is double by third
Double-pole double throw switch 9 and the second double-point double-throw switch 5 are connect with the 4th antenna 8, then by the second power amplifier 17 and the second filtering
Device 19 forms signal transmission circuit and is connect by third double-point double-throw switch 9 and the first double-point double-throw switch 1 with the second antenna 4.
Here, optionally, the second switching switch 18 is single-pole double-throw switch (SPDT), including a movable end and two fixed ends.Wherein,
Its movable end is connect with second filter 19, wherein a fixed end is connect with the input terminal of the second low-noise amplifier 16, Ling Yiding
End is connect with the output end of the second power amplifier 17.
Optionally, the first signal receiving circuit 2 includes: third low-noise amplifier 20 and third filter 21.
Specifically, third filter 21 respectively with the input terminal of third low-noise amplifier 20 and the first double-point double-throw switch
1 the first movable end connection；Wherein, in the first movable end of the first double-point double-throw switch 1 and its first fixed end and the second fixed end
A wherein fixed end connection when, the first signal receiving circuit 2 conducting.
It should be noted that in the first movable end of the first double-point double-throw switch 1 and its first fixed end and the second fixed end
When wherein a fixed end is connected to, since the first fixed end of the first double-point double-throw switch 1 is connect with first antenna 3, the second fixed end and the
Two antennas 4 connection, so the first signal receiving circuit 2 can be received by the wherein antenna in first antenna 3 and the second antenna 4
Signal.
Here, since double-point double-throw switch element differential loss itself is small and isolation is good, the first signal can not only be promoted and connect
Receive the receptivity of circuit 2, additionally it is possible to pass through the third double-point double-throw switch 9 that connect with the first double-point double-throw switch 1 promotion the
The receptivity or emitting performance of one radio circuit 10 or the second radio circuit 11.
Optionally, it includes: the 4th low-noise amplifier 22 and the 4th filter 23 that second signal, which receives circuit 6,.
Specifically, the 4th filter 23 respectively with the input terminal and the second double-point double-throw switch of the 4th low-noise amplifier 22
5 third movable end connection；Wherein, in the third movable end of the second double-point double-throw switch 5 and its third fixed end and the 4th fixed end
A wherein fixed end connection when, second signal receive circuit 6 be connected.
It should be noted that in the third movable end of the second double-point double-throw switch 5 and its third fixed end and the 4th fixed end
When wherein a fixed end is connected to, since the third fixed end of the second double-point double-throw switch 5 is connect with third antenna 7, the 4th fixed end and the
Four antennas 8 connection, so second signal receives circuit 6 and can be received by the wherein antenna in third antenna 7 and the 4th antenna 8
Signal.
Here, since double-point double-throw switch element differential loss itself is small and isolation is good, second signal can not only be promoted and connect
Receive the receptivity of circuit 6, additionally it is possible to pass through the third double-point double-throw switch 9 that connect with the second double-point double-throw switch 5 promotion the
The receptivity or emitting performance of one radio circuit 10 or the second radio circuit 11.
Further, the RF front-end circuit of the embodiment of the present invention, further includes: RF transceiver (not shown), it should
RF transceiver receives circuit 6, the first radio circuit 10 and the second radio frequency with the first signal receiving circuit 2, second signal respectively
Circuit 11 connects.
Specifically, RF transceiver can include: the first receiver port, second signal receiving port, third signal connect
Receiving end mouth, fourth signal receiving port, the first signal emission port and second signal emission port.
Wherein, the output of the first receiver port and the third low-noise amplifier 20 in the first signal receiving circuit 2
End connection；Second signal receiving port is connect with the output end of the first low-noise amplifier 12 in the first radio circuit 10；The
Three receiver ports are connect with the output end of the second low-noise amplifier 16 in the second radio circuit 11；Fourth signal receives
Port is connect with the output end that second signal receives the 4th low-noise amplifier 22 in circuit 6.
First signal emission port is connect with the input terminal of the first power amplifier 13 in the first radio circuit 10；Second
Signal emission port is connect with the input terminal of the second power amplifier 17 in the second radio circuit 11.
Above-mentioned RF front-end circuit as shown in Figure 2 can be realized the 1T4R/2T4R function of 5G NR system, guarantee 1 road hair
It penetrates, 4 tunnel receive capabilities；Alternatively, 2 tunnels emit, 4 tunnel receive capabilities.
Below with reference to transmission process of Fig. 2 brief description signal in RF front-end circuit of the invention.
For transmitting path:
One, for example, the first via emits signal by that can put by the first power after the sending of RF transceiver (not shown)
It is double after first filter 15 is filtered, then through third after the first switching switch 14 after big device 13 amplifies signal
After double-pole double throw switch 9:
1) it may be selected after switching to the first double-point double-throw switch 1, signal launched from first antenna 3 or the second antenna 4
It goes；
2) it may be selected after switching to the second double-point double-throw switch 5, signal launched from third antenna 7 or the 4th antenna 8
It goes.
Two, for example, the second tunnel emits signal by that can put by the second power after the sending of RF transceiver (not shown)
After big device 17 amplifies signal, after the second switching switch 18, after second filter 19 is filtered, then through third double-pole
After commutator 9:
1) 1) it may be selected after switching to the first double-point double-throw switch 1, signal is emitted from first antenna 3 or the second antenna 4
It goes out；
2) it may be selected after switching to the second double-point double-throw switch 5, signal launched from third antenna 7 or the 4th antenna 8
It goes.
It should be noted that if first via transmitting signal is opened by third double-point double-throw switch 9 and the first double-pole double throw
1 is closed, is launched via one of first antenna 3 and the second antenna 4, then transmitting signal in the second tunnel passes through third double-pole double throw
Switch 9 and the second double-point double-throw switch 5, launch via third antenna 7 or the 4th antenna 8.
For receiving path:
Since 5G NR system need to support 4 tunnels while receive, first is received after signal can be received by first antenna 3, through the
Double-pole double-throw switch 1, then by third filter 21 filter after, into third low-noise amplifier 20, passed after signal is amplified
It send to RF transceiver and carries out subsequent processing.
After second reception signal can be received by the second antenna 4, it is double that third double-pole is switched to by the first double-point double-throw switch 1
After throw switch 9, after being filtered using 15 access of first filter, then switches switch 14 through first and switch to the first low noise
Amplifier 12 is sent to RF transceiver and carries out subsequent processing after amplifying signal.
It should be understood that above-mentioned first receives the signal transmission of the signal transmission path and the second reception signal of signal
Path is only an example.That is, after receiving signal by first antenna 3 or the second antenna 4, by the first double-pole
Commutator 1 can select to switch to the receiving path including third low-noise amplifier according to the actual situation；Alternatively,
The receiving path including the first low-noise amplifier is switched to using the selection of third double-point double-throw switch 9, or
The receiving path including the second low-noise amplifier is switched to, is not specifically limited here.
After third reception signal can be received by third antenna 7, through the second double-point double-throw switch 5, then by the 4th filter
After 23 filtering, into the 4th low-noise amplifier 22, it is sent to RF transceiver after signal is amplified and carries out subsequent processing.
After 4th reception signal can be received by the 4th antenna 8, it is double that third double-pole is switched to by the second double-point double-throw switch 5
After throw switch 9, then after 19 access of second filter is filtered, then the second low noise is switched to through the second switching switch 18 and is put
Big device 16 is sent to RF transceiver after amplifying signal and carries out subsequent processing.
It should be understood that the signal that above-mentioned third receives the signal transmission path of signal and the 4th receives signal transmits
Path is only an example, that is to say, that after receiving signal by third antenna 7 or the reception of the 4th antenna 8, by first pair
Double-pole double throw switch 1 can select to switch to the receiving path including the 4th low-noise amplifier according to the actual situation；Alternatively,
The receiving path including the first low-noise amplifier is switched to using the selection of third double-point double-throw switch 9, or
The receiving path including the second low-noise amplifier is switched to, is not specifically limited here.
The RF front-end circuit of the embodiment of the present invention, by being opened respectively with the first double-point double-throw switch and the second double-pole double throw
Correlate the third double-point double-throw switch that connects, wherein the first double-point double-throw switch also respectively with first antenna, the second antenna and first
Signal receiving circuit connection, the second double-point double-throw switch also receive circuit with third antenna, the 4th antenna and second signal respectively
Connection, enables the first radio circuit and the second radio circuit that connect respectively with third double-point double-throw switch neatly to pass through
Any antenna receives signal and/or transmitting signal, this circuit design is simple, on the basis of realizing that signal emits and/or is received,
Radio frequency layout cabling can be shortened, to reduce path differential loss.
In addition, it should also be noted that, in order to shorten the circuit design times of manufacturer, while cost is reduced, the present invention
RF front-end circuit may also be integrated into an IC chip.
The embodiment of the present invention also provides a kind of mobile terminal, comprising: controller；And penetrating as described in above-described embodiment
Frequency front-end circuit；Wherein, controller is used to control the opening and closing of the opening and closing of the first double-point double-throw switch, the second double-point double-throw switch
And/or the opening and closing of third double-point double-throw switch.
In addition, controller is also used to control the closing of the first switching switch and/or the opening and closing of the second switching switch.
The embodiment of the present invention is described with above attached drawing, but the invention is not limited to above-mentioned specific
Embodiment, the above mentioned embodiment is only schematical, rather than restrictive, those skilled in the art
Under the inspiration of the present invention, without breaking away from the scope protected by the purposes and claims of the present invention, it can also make very much
Form belongs within protection of the invention.
Claims (12)
1. a kind of RF front-end circuit characterized by comprising
First double-point double-throw switch；
First signal receiving circuit, by first double-point double-throw switch, with the first mesh in first antenna and the second antenna
Antenna connection is marked, and signal is received by the first object antenna；
Second double-point double-throw switch；
Second signal receives circuit, by second double-point double-throw switch, with the second mesh in third antenna and the 4th antenna
Antenna connection is marked, and signal is received by second target antenna；
Third double-point double-throw switch is connect with first double-point double-throw switch and second double-point double-throw switch respectively；
First radio circuit is connect with the third double-point double-throw switch, comprising: signal receiving modes or signal emit mould
Formula；
Second radio circuit is connect with the third double-point double-throw switch, comprising: signal receiving modes or signal emit mould
Formula.
2. RF front-end circuit according to claim 1, which is characterized in that
First double-point double-throw switch includes: the first movable end, the second movable end, the first fixed end and the second fixed end；Wherein, institute
It states the first movable end and connects first signal receiving circuit, first fixed end connects the first antenna, and described second is fixed
End connects second antenna；
Second double-point double-throw switch includes: third movable end, the 4th movable end, third fixed end and the 4th fixed end；Wherein, institute
It states third movable end and connects the second signal reception circuit, the third fixed end connects the third antenna, and the described 4th is fixed
End connects the 4th antenna；
The third double-point double-throw switch includes: the 5th movable end, the 6th movable end, the 5th fixed end and the 6th fixed end；Wherein, institute
It states the 5th movable end and connects first radio circuit, the 6th movable end connects second radio circuit, and the described 5th
Fixed end connects second movable end, and the 6th fixed end connects the 4th movable end.
3. RF front-end circuit according to claim 2, which is characterized in that first radio circuit includes: first low
Noise amplifier, the first power amplifier, the first switching switch and switch respectively with the 5th movable end and described first
Switch the first filter of connection.
4. RF front-end circuit according to claim 3, which is characterized in that first low-noise amplifier passes through described
First switching switch is connect with the first filter, and the 5th movable end is connected to the 5th fixed end, and described the
When two movable ends are connected to the wherein fixed end in first fixed end and second fixed end, first radio circuit is in
Signal receiving modes；
Alternatively, first low-noise amplifier is connect by the first switching switch with the first filter, and described
5th movable end is connected to the 6th fixed end, and in the 4th movable end and the third fixed end and the 4th fixed end
When wherein a fixed end is connected to, first radio circuit is in signal receiving modes.
5. RF front-end circuit according to claim 3, which is characterized in that first power amplifier passes through described the
One switching switch is connect with the first filter, and the 5th movable end is connected to the 5th fixed end, and described second
When movable end is connected to the wherein fixed end in first fixed end and second fixed end, first radio circuit is in letter
Number emission mode；
Alternatively, first power amplifier is connect by the first switching switch with the first filter, and described the
Five movable ends are connected to the 6th fixed end, and its in the 4th movable end and the third fixed end and the 4th fixed end
In a fixed end connection when, first radio circuit is in signal emission mode.
6. RF front-end circuit according to claim 2, which is characterized in that second radio circuit includes: second low
Noise amplifier, the second power amplifier, the second switching switch and switch respectively with the 6th movable end and described second
Switch the second filter of connection.
7. RF front-end circuit according to claim 6, which is characterized in that second low-noise amplifier passes through described
Second switching switch is connect with the second filter, and the 6th movable end is connected to the 5th fixed end, and described the
When two movable ends are connected to the wherein fixed end in first fixed end and second fixed end, second radio circuit is in
Signal receiving modes；
Alternatively, second low-noise amplifier is connect by the second switching switch with the second filter, and described
6th movable end is connected to the 6th fixed end, and in the 4th movable end and the third fixed end and the 4th fixed end
When wherein a fixed end is connected to, second radio circuit is in signal receiving modes.
8. RF front-end circuit according to claim 6, which is characterized in that second power amplifier passes through described the
Two switching switches are connect with the second filter, and the 6th movable end is connected to the 5th fixed end, and described second
When movable end is connected to the wherein fixed end in first fixed end and second fixed end, second radio circuit is in letter
Number emission mode；
Alternatively, second power amplifier is connect by the second switching switch with the second filter, and described the
Six movable ends are connected to the 6th fixed end, and its in the 4th movable end and the third fixed end and the 4th fixed end
In a fixed end connection when, second radio circuit is in signal emission mode.
9. RF front-end circuit according to claim 2, which is characterized in that first signal receiving circuit includes:
Three low-noise amplifiers and third filter；
The third filter is connect with the input terminal of the third low-noise amplifier and first movable end respectively；
Wherein, it is described when first movable end is connected to the wherein fixed end in first fixed end and second fixed end
The conducting of first signal receiving circuit.
10. RF front-end circuit according to claim 2, which is characterized in that it includes: that the second signal, which receives circuit,
Four low-noise amplifiers and the 4th filter；
4th filter is connect with the input terminal of the 4th low-noise amplifier and the third movable end respectively；
Wherein, it is described when the third movable end is connect with the wherein fixed end in the third fixed end and the 4th fixed end
Second signal receives circuit conducting.
11. RF front-end circuit according to claim 1, which is characterized in that further include:
RF transceiver, the RF transceiver respectively with first signal receiving circuit, the second signal receive circuit,
First radio circuit is connected with second radio circuit.
12. a kind of mobile terminal characterized by comprising
Controller；And
RF front-end circuit as claimed in any one of claims 1 to 11；
Wherein, the controller for control the opening and closing of the first double-point double-throw switch, the opening and closing of the second double-point double-throw switch and/or
The opening and closing of third double-point double-throw switch.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910222066.8A CN109861735B (en) | 2019-03-22 | 2019-03-22 | Radio frequency front-end circuit and mobile terminal |
| PCT/CN2020/078864 WO2020192426A1 (en) | 2019-03-22 | 2020-03-11 | Radio frequency front-end circuit and mobile terminal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910222066.8A CN109861735B (en) | 2019-03-22 | 2019-03-22 | Radio frequency front-end circuit and mobile terminal |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109861735A true CN109861735A (en) | 2019-06-07 |
| CN109861735B CN109861735B (en) | 2022-07-15 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910222066.8A Active CN109861735B (en) | 2019-03-22 | 2019-03-22 | Radio frequency front-end circuit and mobile terminal |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN109861735B (en) |
| WO (1) | WO2020192426A1 (en) |
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| CN110518932A (en) * | 2019-08-16 | 2019-11-29 | 维沃移动通信有限公司 | A kind of RF front-end circuit and mobile terminal |
| CN110808757A (en) * | 2019-10-29 | 2020-02-18 | Tcl移动通信科技（宁波）有限公司 | Radio frequency front-end circuit and terminal equipment |
| CN110890900A (en) * | 2019-11-29 | 2020-03-17 | 维沃移动通信有限公司 | Radio frequency circuit and electronic equipment |
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| WO2020192426A1 (en) * | 2019-03-22 | 2020-10-01 | 维沃移动通信有限公司 | Radio frequency front-end circuit and mobile terminal |
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| CN110518932A (en) * | 2019-08-16 | 2019-11-29 | 维沃移动通信有限公司 | A kind of RF front-end circuit and mobile terminal |
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| CN111294081B (en) * | 2020-01-22 | 2022-01-11 | Oppo广东移动通信有限公司 | Radio frequency system and electronic equipment |
| CN111294081A (en) * | 2020-01-22 | 2020-06-16 | Oppo广东移动通信有限公司 | Radio frequency system and electronic equipment |
| CN111510180A (en) * | 2020-04-23 | 2020-08-07 | 维沃移动通信有限公司 | Antenna module, electronic equipment and control method |
| CN111510180B (en) * | 2020-04-23 | 2022-02-01 | 维沃移动通信有限公司 | Antenna module, electronic equipment and control method |
| CN111756388A (en) * | 2020-06-28 | 2020-10-09 | 维沃移动通信有限公司 | Radio frequency circuit and electronic equipment |
| WO2022062575A1 (en) * | 2020-09-27 | 2022-03-31 | Oppo广东移动通信有限公司 | Radio frequency system and communication device |
| CN112397876A (en) * | 2020-11-05 | 2021-02-23 | 深圳市锐尔觅移动通信有限公司 | Antenna module and terminal |
| CN114584168A (en) * | 2020-11-17 | 2022-06-03 | 中国移动通信有限公司研究院 | Signal output device and electronic equipment |
| CN115694522A (en) * | 2023-01-03 | 2023-02-03 | 荣耀终端有限公司 | Radio frequency module and electronic equipment |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109861735B (en) | 2022-07-15 |
| WO2020192426A1 (en) | 2020-10-01 |
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