CN109560832A - A kind of radio circuit and terminal for 5G communication - Google Patents
A kind of radio circuit and terminal for 5G communication Download PDFInfo
- Publication number
- CN109560832A CN109560832A CN201910067713.2A CN201910067713A CN109560832A CN 109560832 A CN109560832 A CN 109560832A CN 201910067713 A CN201910067713 A CN 201910067713A CN 109560832 A CN109560832 A CN 109560832A
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- switching switch
- filter
- pass filter
- switch
- input terminal
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- 238000004891 communication Methods 0.000 title claims abstract description 31
- 230000003068 static effect Effects 0.000 claims description 11
- 238000001914 filtration Methods 0.000 claims description 4
- 238000004519 manufacturing process Methods 0.000 abstract description 16
- 238000000034 method Methods 0.000 description 8
- 238000010897 surface acoustic wave method Methods 0.000 description 4
- 230000003321 amplification Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 238000003199 nucleic acid amplification method Methods 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000001228 spectrum Methods 0.000 description 2
- 238000009826 distribution Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 230000003595 spectral effect Effects 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
- H04B1/38—Transceivers, i.e. devices in which transmitter and receiver form a structural unit and in which at least one part is used for functions of transmitting and receiving
- H04B1/40—Circuits
- H04B1/401—Circuits for selecting or indicating operating mode
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- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Transceivers (AREA)
Abstract
The present invention discloses a kind of radio circuit for 5G communication, including power amplifier, the first switching switch, high-pass filter, low-pass filter, duplexer and the second switching switch；The output end of power amplifier is connect with the input terminal of the first switching switch, first output end of the first switching switch and the input terminal of high-pass filter connect, the output end of high-pass filter and the input terminal of low-pass filter connect, the output end of low-pass filter is connect with the first input end of the second switching switch, the second output terminal of first switching switch and the input terminal of duplexer connect, the output end of duplexer is connect with the second input terminal of the second switching switch, and the output end of the second switching switch is for connecting antenna.Correspondingly, the invention also discloses a kind of terminals.Filter of the invention is composed using high-pass filter and low-pass filter, and structure is simple, reduces and manufactures difficulty and manufacturing cost.
Description
Technical field
The present invention relates to field of communication technology more particularly to a kind of radio circuits and terminal for 5G communication.
Background technique
As Modern Communication System constantly upgrades, from 2G to 3G, the wireless communications such as 3G to 4G, 4G to 5G and WiFi system
It unites higher and higher to linear requirements.In a wireless communication system, rf terminal is responsible for being sent to day after realizing radiofrequency signal amplification
Line transmitting.Commonly used with multifrequency and multiple mode cellphone, the rf terminal module number in mobile phone is also being continuously increased, therefore right
It is also constantly being promoted in the requirement of the integrated level of rf terminal module, so that (multifrequency is more by the MMPA that generallys use of 4G communication
Mould power amplifier) mode that combines with isolated filter mould group is no longer applicable in.
The prior art provides a kind of rf terminal with filter, as shown in Figure 1, tradition has the radio frequency of filter
Terminal, including power amplifier 11, switching switch (12,14), duplexer 15 and for being filtered to the signal received
Bandpass filter 13.The bandpass filter 13 can only be realized using a kind of manufacture of technique, such as surface acoustic wave (surface
Acoustic wave, SAW) filter and body surface surface wave (Bulk Acoustic Wave) filter, its structure is complicated, manufacture
Technique realizes that difficulty is larger, and manufacturing cost is higher.
Summary of the invention
Technical problem to be solved by the present invention lies in provide a kind of radio circuit and terminal for 5G communication, filtering
Device is composed using high-pass filter and low-pass filter, and structure is simple, reduces and manufactures difficulty and manufacturing cost.
In order to solve the above-mentioned technical problems, the present invention provides a kind of radio circuits for 5G communication, including power to put
Big device, the first switching switch, high-pass filter, low-pass filter, duplexer and the second switching switch；
The power amplifier includes input terminal for receiving radiofrequency signal and for exporting amplified radiofrequency signal
Output end, the output end of the power amplifier with it is described first switching switch input terminal connect, it is described first switch open
The first output end closed is connect with the input terminal of the high-pass filter, the output end of the high-pass filter and the low pass filtered
The input terminal of wave device connects, and the output end of the low-pass filter is connect with the first input end of the second switching switch, institute
The second output terminal for stating the first switching switch is connect with the input terminal of the duplexer, the output end of the duplexer and described the
The second input terminal connection of two switching switches, the output end of the second switching switch is for connecting antenna.
Further, the first switching switch is single-pole double-throw switch (SPDT)；
The moved end of the single-pole double-throw switch (SPDT) is the input terminal of the first switching switch, the of the single-pole double-throw switch (SPDT)
One static side is the first output end of the first switching switch, and the second static side of the single-pole double-throw switch (SPDT) is first switching
The second output terminal of switch.
Further, the second switching switch is single-pole double-throw switch (SPDT)；
First static side of the single-pole double-throw switch (SPDT) is the first input end of the second switching switch, the single-pole double throw
Second static side of switch is the second input terminal of the second switching switch, and the moved end of the single-pole double-throw switch (SPDT) is described second
Switch the output end of switch.
Further, the high-pass filter is any one in IPD filter, SAW filter and BAW filter.
Further, the low-pass filter is any one in IPD filter, SAW filter and BAW filter.
Correspondingly, the present invention also provides a kind of terminals, the radio circuit including being used for 5G communication as previously described.
Provided by the present invention for 5G communication radio circuit and terminal, power amplifier to the radiofrequency signal received into
Amplified radiofrequency signal is exported by output end after row enhanced processing, the first switching switch carries out the operating mode of FD and TD
Switching, when work is in TD mode, the filter being composed of high-pass filter and low-pass filter is to described amplified
Radiofrequency signal is filtered, and the second switching switch selects corresponding TD mode, sends antenna for TD signal；When work is in FD mould
When formula, the second switching switch, the second switching switch choosing are reached after the radiofrequency signal of power amplifier amplification is by duplexer
Corresponding FD mode is selected, sends antenna for FD signal.Due to filter using high-pass filter and low-pass filter combination and
At structure is simple, reduces and manufactures difficulty and manufacturing cost.
Detailed description of the invention
Fig. 1 is the circuit block diagram for the radio circuit that the prior art provides；
Fig. 2 is a kind of circuit block diagram of radio circuit for 5G communication provided by the invention；
Fig. 3 is the frequency of filter and the graph of relation of transmission rate in 2G, 3G, 4G and 5G communication.
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 only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
It referring to fig. 2, is a kind of circuit block diagram of radio circuit for 5G communication provided by the invention.
The embodiment of the present invention provides a kind of radio circuit for 5G communication, including the switching of power amplifier 21, first is opened
Close 22, high-pass filter 23, low-pass filter 24, duplexer 26 and the second switching switch 25；
The power amplifier 21 includes input terminal a for receiving radiofrequency signal and for exporting amplified radio frequency letter
Number output end b, the output end b of the power amplifier 21 connect with the input terminal c of the first switching switch 22, described the
One switching switch 22 the first output end d1 connect with the input terminal of the high-pass filter 23, the high-pass filter 23 it is defeated
Outlet is connect with the input terminal of the low-pass filter 24, and the output end of the low-pass filter 24 and second switching switch
25 first input end e1 connection, the second output terminal d2 of the first switching switch 22 and the input terminal of the duplexer 26 connect
It connects, the output end of the duplexer 26 is connect with the second input terminal e2 of the second switching switch 25, and second switching is opened
The Ausgang of pass 25 is for connecting antenna 27.
In the specific implementation, power amplifier 21 passes through output end b after amplifying processing to the radiofrequency signal received
Amplified radiofrequency signal is exported, the operating mode of first switching 22 couples of FD and TD of switch switches over, when work is in TD mode
When, the input terminal c of the first switching switch 22 is connect with the first output end d1, and amplified radiofrequency signal is sent to high-pass filtering
The input terminal of device 23, the filter being composed of high-pass filter 23 and low-pass filter 24 believe the amplified radio frequency
It number is filtered, the first input end e1 of the second switching switch 25 is connect with Ausgang, that is, corresponding TD mode is selected, by TD
Signal is sent to antenna 27；When work is in FD mode, the input terminal c of the first switching switch 22 is connect with second output terminal d2,
Amplified radiofrequency signal is sent to the input terminal of duplexer 26, the second switching of arrival is opened after radiofrequency signal passes through duplexer 26
25 the second input terminal e2 is closed, the second input terminal e2 of the second switching switch 25 is connect with Ausgang, that is, selects corresponding FD mould
FD signal is sent antenna 27 by formula.Since filter is composed using high-pass filter 23 and low-pass filter 24, structure
Simply, it reduces and manufactures difficulty and manufacturing cost.Wherein, due to having the difference of FD and TD, i.e. time-division from 3G the and 4G epoch
With the difference of frequency division, power amplifier 21 is all the working method of multimode multi-frequency (Multi Mode, Mulit Band, MMMB),
The first switching switch 22 and the second switching switch 25 herein is used to switch the operating mode of FD and TD.
It should be noted that the structure of bandpass filter and realization are generally more complex than high-pass filter and low-pass filter,
Cost is also relatively high, and the manufacturing process of use is also more single.The high-pass filter 23 and low pass that the embodiment of the present invention is taken
The combined mode of filter 24 can use a variety of manufacturing process, reduce manufacture difficulty and manufacturing cost.
It is the frequency of filter and the graph of relation of transmission rate in 2G, 3G, 4G and 5G communication referring to Fig. 3.Such as Fig. 3 institute
Show, the associated frequency band that frequency range used by being communicated due to 5G is communicated far from 2G, 3G and 4G, the high and low frequency of filter is cut
It can be different to feature, it can obtain the spectral response for meeting 5G requirement with multiple filter banks, meeting relevant insert
Under the premise of entering loss and isolation, filter technique used by low pass and high pass can be adjusted according to actual needs.
The characteristics of under regular situation due to 2G, 3G and 4G frequency spectrum, can only use bandpass filter, cannot use high-pass filter and low pass
The method of filter bank, filter can only be manufactured and designed under single technique by having limited to.
It should be noted that in the performance that high-pass filter or low-pass filter combine in 2G, 3G, 4G and 5G communication
Be it is identical, cannot all be fully achieved bandpass filter over-all properties, and the performance indicator being not achieved is in 2G, 3G and 4G communication
It is unacceptable.As Modern Communication System constantly upgrades, from 2G to 3G, 3G to 4G, 4G to 5G, thinking to thinking set must
The performance requirement of 5G communication must be can be only achieved with high performance bandpass filter, could be communicated and receive by 5G, but by careful
The spectrum distribution for studying 5G, can get rid of this thinking set.The present invention for 5G by leading on conventional radio frequency circuit base
The characteristics of letter, by being filtered to different filter process combinations to radiofrequency signal, the realization for reducing radio circuit is difficult
Degree and related manufacturing cost, to increase substantially the compatibility and feasibility of 5G communication radio frequency circuit.
Further, the first switching switch 22 is single-pole double-throw switch (SPDT)；
The moved end of the single-pole double-throw switch (SPDT) is the input terminal c of the first switching switch 22, the single-pole double-throw switch (SPDT)
The first static side be it is described first switching switch 22 the first output end d1, the second static side of the single-pole double-throw switch (SPDT) is described
The second output terminal d2 of first switching switch 22.
Further, the second switching switch 25 is single-pole double-throw switch (SPDT)；
First static side of the single-pole double-throw switch (SPDT) is the first input end e1 of the second switching switch 25, the hilted broadsword
Second static side of commutator is the second input terminal e2 of the second switching switch 25, and the moved end of the single-pole double-throw switch (SPDT) is
The Ausgang of the second switching switch 25.
Further, the high-pass filter 23 is any one in IPD filter, SAW filter and BAW filter
Kind.
Further, the low-pass filter 24 is any one in IPD filter, SAW filter and BAW filter
Kind.
It should be noted that high-pass filter 23 and low-pass filter 24 can be realized using a variety of different manufacturing process,
Including but not limited to integrated passive devices (Integrated Passive Device, IPD) filter, surface acoustic wave
(surface acoustic wave, SAW) filter and body surface surface wave (Bulk Acoustic Wave) filter.Using height
Bandpass filter and low-pass filter are combined, and can reduce manufacture difficulty and manufacturing cost.
Correspondingly, the present invention also provides a kind of terminals, the radio circuit including being used for 5G communication as previously described.
Provided by the present invention for 5G communication radio circuit and terminal, power amplifier to the radiofrequency signal received into
Amplified radiofrequency signal is exported by output end after row enhanced processing, the first switching switch carries out the operating mode of FD and TD
Switching, when work is in TD mode, the filter being composed of high-pass filter and low-pass filter is to described amplified
Radiofrequency signal is filtered, and the second switching switch selects corresponding TD mode, sends antenna for TD signal；When work is in FD mould
When formula, the second switching switch, the second switching switch choosing are reached after the radiofrequency signal of power amplifier amplification is by duplexer
Corresponding FD mode is selected, sends antenna for FD signal.Due to filter using high-pass filter and low-pass filter combination and
At structure is simple, reduces and manufactures difficulty and manufacturing cost.
The above is a preferred embodiment of the present invention, it is noted that for those skilled in the art
For, various improvements and modifications may be made without departing from the principle of the present invention, these improvements and modifications are also considered as
Protection scope of the present invention.
Claims (6)
1. a kind of radio circuit for 5G communication, which is characterized in that including power amplifier, the first switching switch, high pass filter
Wave device, low-pass filter, duplexer and the second switching switch；
The power amplifier includes input terminal for receiving radiofrequency signal and for exporting the defeated of amplified radiofrequency signal
Outlet, the output end of the power amplifier are connect with the input terminal of the first switching switch, the first switching switch
First output end is connect with the input terminal of the high-pass filter, the output end of the high-pass filter and the low-pass filter
Input terminal connection, the output end of the low-pass filter connect with the first input end that second switching switchs, described the
The second output terminal of one switching switch is connect with the input terminal of the duplexer, and the output end of the duplexer is cut with described second
The second input terminal connection of switch is changed, the output end of the second switching switch is for connecting antenna.
2. the radio circuit for 5G communication as described in claim 1, which is characterized in that the first switching switch is hilted broadsword
Commutator；
The moved end of the single-pole double-throw switch (SPDT) is the input terminal of the first switching switch, and the first of the single-pole double-throw switch (SPDT) is quiet
End is the first output end of the first switching switch, and the second static side of the single-pole double-throw switch (SPDT) is the first switching switch
Second output terminal.
3. the radio circuit for 5G communication as described in claim 1, which is characterized in that the second switching switch is hilted broadsword
Commutator；
First static side of the single-pole double-throw switch (SPDT) is the first input end of the second switching switch, the single-pole double-throw switch (SPDT)
The second static side be the second switching switch the second input terminal, the moved end of the single-pole double-throw switch (SPDT) is second switching
The output end of switch.
4. the radio circuit as described in any one of claims 1 to 3 for 5G communication, which is characterized in that the high-pass filtering
Device is any one in IPD filter, SAW filter and BAW filter.
5. the radio circuit as described in any one of claims 1 to 3 for 5G communication, which is characterized in that the low-pass filtering
Device is any one in IPD filter, SAW filter and BAW filter.
6. a kind of terminal, which is characterized in that including the radio circuit such as described in any one of claim 1 to 5 for 5G communication.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910067713.2A CN109560832A (en) | 2019-01-24 | 2019-01-24 | A kind of radio circuit and terminal for 5G communication |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910067713.2A CN109560832A (en) | 2019-01-24 | 2019-01-24 | A kind of radio circuit and terminal for 5G communication |
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| CN109560832A true CN109560832A (en) | 2019-04-02 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201910067713.2A Pending CN109560832A (en) | 2019-01-24 | 2019-01-24 | A kind of radio circuit and terminal for 5G communication |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110581718A (en) * | 2019-08-30 | 2019-12-17 | 普联技术有限公司 | Radio frequency isolation circuit and dual-frequency network equipment |
| CN112543012A (en) * | 2020-12-09 | 2021-03-23 | 诺思(天津)微系统有限责任公司 | Filter circuit, duplexer, and communication apparatus |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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