CN109951207A - Radio frequency system and electronic equipment - Google Patents
Radio frequency system and electronic equipment Download PDFInfo
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- CN109951207A CN109951207A CN201910214289.XA CN201910214289A CN109951207A CN 109951207 A CN109951207 A CN 109951207A CN 201910214289 A CN201910214289 A CN 201910214289A CN 109951207 A CN109951207 A CN 109951207A
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Abstract
The embodiment of the present application discloses a kind of radio frequency system and electronic equipment, comprising: baseband chip, 5G RF front-end module, 5G antenna, LTE low frequency radio frequency front-end module and LTE antenna, the 5G RF front-end module, for supporting the transmitting-receiving of n78 frequency band signals；The LTE low frequency radio frequency front-end module includes TRX mould group and low-pass filter, and described TRX mould group one end is connect with the baseband chip, and the other end is connect by the low-pass filter with the LTE antenna；Wherein, the 5G RF front-end module can be worked at the same time with the LTE low frequency radio frequency front-end module under the control of the baseband chip, the low-pass filter is used to filter out the harmonic wave of the LTE low frequency band signal, and the frequency range and the n78 frequency range where the harmonic wave are least partially overlapped.The embodiment of the present application has the advantages of reducing interference, improving user experience.
Description
Technical field
This application involves technical field of mobile terminals, and in particular to a kind of radio frequency system and electronic equipment.
Background technique
With a large amount of popularization and applications of the electronic equipments such as smart phone, smart phone can support using more and more,
Function is stronger and stronger, and smart phone develops towards diversification, personalized direction,
As indispensable appliance and electronic in user's life.Fourth generation mobile communication technology (the 4th
Generation mobile communication technology, 4G) electronic equipment generally uses in mobile communication system
Single antenna or double antenna radio frequency system framework, current 5th third-generation mobile communication technology
(5th-Generation, 5G) mobile communication system newly eats dishes without rice or wine to propose to support 4 days in (New Radio, NR) system
The radio frequency system framework demand of line group, if smart phone is supported the base station 5G and LTE base station simultaneously while being connected, 5G and LTE
Between can generate interference, influence the Experience Degree of user.
Summary of the invention
The embodiment of the present application provides a kind of radio frequency system and electronic equipment, to reduce interference, improves user experience.
In a first aspect, the embodiment of the present application provides a kind of radio frequency system, including radio frequency system, comprising:
Baseband chip, 5G RF front-end module, 5G antenna, LTE low frequency radio frequency front-end module and LTE antenna, wherein,
The 5G RF front-end module is connect with the baseband chip and the 5G antenna, for supporting n78 frequency band signals
Transmitting-receiving；
The LTE low frequency radio frequency front-end module includes TRX mould group and low-pass filter, described TRX mould group one end with it is described
Baseband chip connection, the other end are connect by the low-pass filter with the LTE antenna, for supporting the LTE lower than 1GHz
The transmitting-receiving of low frequency band signal；
Wherein, the 5G RF front-end module and the LTE low frequency radio frequency front-end module can be in the controls of the baseband chip
It is worked at the same time under system, the low-pass filter is used to filter out the harmonic wave of the LTE low frequency band signal, the frequency where the harmonic wave
Section is least partially overlapped with the n78 frequency range.
Second aspect, provides a kind of electronic equipment, and the electronic equipment includes any one radio frequency system of first aspect；
The electronic equipment include at least it is following any one: mobile terminal.
As can be seen that in the embodiment of the present application, since each mould group in radio frequency system is arranged close to respective antenna group, and
It only needs receiving module and emitting mould train that can construct core processing circuit, is conducive to promote each channel sensitivity, compared to separation
Device is built, and integrated level is higher, and area/cost/power consumption is more excellent.
Detailed description of the invention
In order to illustrate the technical solutions in the embodiments of the present application or in the prior art more clearly, to embodiment or will show below
There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
Some embodiments of application for those of ordinary skill in the art without creative efforts, can be with
It obtains other drawings based on these drawings.
Fig. 1 is a kind of structural schematic diagram of radio frequency system provided by the embodiments of the present application；
Fig. 2 is a kind of structural schematic diagram of TRX mould group provided by the embodiments of the present application；
Fig. 3 is a kind of structural schematic diagram of 5G RF front-end module provided by the embodiments of the present application；
Fig. 4 is the structural schematic diagram of SP4T provided by the embodiments of the present application a kind of；
Fig. 5 is the structural schematic diagram of SP2T provided by the embodiments of the present application a kind of；
Fig. 6 is the structural schematic diagram of another kind 5G RF front-end module provided by the embodiments of the present application；
Fig. 7 is the structural schematic diagram of another 5G RF front-end module provided by the embodiments of the present application；
Fig. 8 is a kind of structural schematic diagram of n78 radio frequency TRX mould group provided by the embodiments of the present application；
Fig. 9 is a kind of structural schematic diagram of n78 radio frequency RX mould group provided by the embodiments of the present application；
Figure 10 is that provided by the embodiments of the present application one is a kind of structures of radio frequency system provided by the embodiments of the present application to show
It is intended to；
Figure 11 is the structural schematic diagram of a kind of electronic equipment provided by the embodiments of the present application.
Specific embodiment
Below in conjunction with the attached drawing in the embodiment of the present application, technical solutions in the embodiments of the present application carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of embodiments of the present application, instead of all the embodiments.It is based on
Embodiment in the application, those of ordinary skill in the art are obtained every other under that premise of not paying creative labor
Embodiment shall fall in the protection scope of this application.
The description and claims of this application and term " first " in above-mentioned attached drawing, " second " etc. are for distinguishing
Different objects, are not use to describe a particular order.In addition, term " includes " and " having " and their any deformations, it is intended that
It is to cover and non-exclusive includes.Such as the process, method, system, product or equipment for containing a series of steps or units do not have
It is defined in listed step or unit, but optionally further comprising the step of not listing or unit, or optionally also wrap
Include other step or units intrinsic for these process, methods, product or equipment.
Referenced herein " embodiment " is it is meant that a particular feature, structure, or characteristic described can wrap in conjunction with the embodiments
It is contained at least one embodiment of the application.Each position in the description occur the phrase might not each mean it is identical
Embodiment, nor the independent or alternative embodiment with other embodiments mutual exclusion.Those skilled in the art explicitly and
Implicitly understand, embodiment described herein can be combined with other embodiments.
Electronic equipment involved by the embodiment of the present application may include the various handheld devices with wireless communication function,
Mobile unit, wearable device calculate equipment or are connected to other processing equipments and various forms of radio modem
User equipment (User Equipment, UE), mobile station (Mobile Station, MS), terminal device (terminal
Device) etc..For convenience of description, apparatus mentioned above is referred to as electronic equipment.
Currently, the Sounding Reference Signal (Sounding Reference Signal, SRS) of 4 antennas of mobile phone switches
(switching) function is group, China Mobile CMCC in " China Mobile's 5G pilot test Technical White Paper for ××× _ terminal "
Essential option, in third generation partner program 3GPP be it is optional, main purpose is in order to which base station passes through measurement mobile phone 4 days
Line uplink signal, and then confirm 4 path channels quality and parameter, it is directed to 4 path channels again according to channel reciprocity and does downlink optimization
The wave beam forming of multiple-input and multiple-output Massive mimo antenna array finally makes downlink 4x4MIMO obtain optimum data transmission
Performance.
Wherein, the electronic equipment specifically can be 5G NR mobile phone terminal or other 5G NR terminal devices, such as client
Contract equipment (Customer Premise Equipment, CPE) or portable wideband wireless device (Mobile Wifi,
MIFI)。
Define the original of the mould group (including receiving module and emitting mould train) in the radio frequency system that the embodiment of the present application is presented
Because as follows, 1. 5G NR needs downlink 4x4MIMO or 4 tunnel diversity receptions；2. 4 days line wheel hairs of TX SRS switching, i.e., 4 days
The SRS of line switches.
For 4 days line wheel hairs of TX SRS switching in the specific implementation, comprising executing single frequency range with electronic equipment
During the transmitting antenna switching of (by taking Nx frequency range as an example):
In first transmit cycle, electronic equipment controls first T-port and the of the channel selection switch of emitting mould train
One port P connection, realizes and emits signal by the antenna of first antenna group.
In second transmit cycle, electronic equipment controls first T-port and the of the channel selection switch of emitting mould train
Three port P connections, and the bypass channel conducting of mould group is controlled and received, it realizes and is emitted by first antenna of the 4th antenna sets
Signal.
N78 frequency range: 3300MHz -3800MHz
B20 frequency range: uplink 832MHz -862MHz, downlink 791MHz -821MHz.
Under EN-DC mode, 4 subharmonic of B8TX are fallen in the band limits of n78 5GNR terminal, 4 subharmonic fallen into
Interference can be generated to n78 frequency range, influence the receiving sensitivity of n78, and then influence the Experience Degree of user.
Refering to fig. 1, Fig. 1 provides a kind of radio frequency system, before which includes: baseband chip 101,5G radio frequency
End module 103, LTE low frequency LB RF front-end module 102,5G antenna 106 and LTE antenna 105, wherein, the 5G radio-frequency front-end
Module is connect with the baseband chip and the 5G antenna, for supporting the transmitting-receiving of n78 frequency band signals.
The LTE low frequency radio frequency front-end module includes TRX mould group and low-pass filter 104, described TRX mould group one end and institute
Baseband chip connection is stated, the other end is connect by the low-pass filter with the LTE antenna, for supporting lower than 1GHz's
The transmitting-receiving of LTE low frequency band signal.
Wherein, the 5G RF front-end module and the LTE low frequency radio frequency front-end module can be in the controls of the baseband chip
It is worked at the same time under system, the low-pass filter is used to filter out the harmonic wave of the LTE low frequency band signal, the frequency where the harmonic wave
Section is least partially overlapped with the n78 frequency range.
Optionally, above-mentioned 5G RF front-end module supports n78 frequency range and supports the SRS switching of multiple antennas (such as 4 antennas).
LTE low frequency band signal includes: one of B20 frequency range, R8 frequency range, B28 frequency range or any combination, wherein the LTE low frequency is penetrated
Frequency front-end module 102 includes: B20 radio frequency TRX (transmitting receives) mould group and low-pass filter LPF, and (transmitting connects B20 radio frequency TRX
Receive) mould group connect with one end of LPF, the other end connection antenna of LPF.
The technical scheme provided by the application includes n78 RF front-end modules (work is in 5GNR), LTE low frequency radio frequency front end mould
Block (includes at least B8 radio-frequency module).Low-pass filtering is set between TRX mould group and antenna in the LTE low frequency radio frequency front-end module
Device, to filter out the harmonic wave of B8 generation, therefore it has the advantages of reducing interference, improving user experience.
Optionally, as shown in Fig. 2, above-mentioned TRX mould group includes: power amplifier PA, low-noise amplifier LNA, duplexer
DUP, control unit, baseband chip, above-mentioned control unit are receiving or sending state for controlling the work of TRX mould group, wherein
Duplexer DUP closes one end of port connection LPF, and the two points of ports duplexer DUP are separately connected power amplifier PA
One end and low-noise amplifier LNA one end, the other end of power amplifier PA and low-noise amplifier LNA's is another
End is separately connected baseband chip.
The work of TRX mould group works in B8 band downlink, DUP in B8 frequency range in B8 uplink band, LNA work.
Refering to Fig. 3, Fig. 3 is 5G RF front-end module, and the 5G RF front-end module is as shown in figure 3, specifically include: n78 is penetrated
301,3 n78 radio frequency RX mould groups 302 of frequency TRX mould group, 303,4, SP4T switch, 304,4, SP2T switch antenna (can be with LTE
Antenna duplexer illustrated here with antenna 1, antenna 2, antenna 3 and antenna 4 for convenience of explanation), the antenna in the application
Unless otherwise specified, it can be single antenna, be also possible to the antenna sets or aerial array of more antenna compositions.
As shown in figure 3,
The port P that the emission port TX and SP4T of n78 radio frequency TRX mould group are switched is connect, 4 T-ports point of SP4T switch
Not Lian Jie 4 SP2T switch the second T-port, the first T-port of 3 SP2T switch connects with 3 n78 radio frequency RX mould groups respectively
It connects, the first T-port of 1 SP2T switch connects n78 radio frequency TRX mould group receiving port RX, the port P point of 4 SP2T switch
It Lian Jie not antenna 1, antenna 2, antenna 3 and antenna 4.
Refering to Fig. 4, Fig. 4 is a kind of schematic diagram of SP4T switch, as shown in figure 4, SP4T switch may include the end P
Mouth and 4 T-ports, 1 port P are connect entirely with 4 T-ports, i.e., controller can control SP4T and connect as needed arbitrarily
One T-port.
Refering to Fig. 5, Fig. 5 is a kind of schematic diagram of SP2T switch, as shown in figure 5, SP2T switch may include the end P
Mouth and 2 T-ports, 1 port P are connect entirely with 2 T-ports, i.e., controller can control SP2T and connect as needed arbitrarily
One T-port.
Refering to Fig. 6, Fig. 6 is 5G RF front-end module, and the 5G RF front-end module is as shown in fig. 6, specifically include: n78 is penetrated
301,3 n78 radio frequency RX mould groups 302 of frequency TRX mould group, 303,4, SP4T switch, 304,4, SP2T switch antenna (can be with LTE
Antenna duplexer illustrated here with antenna 1, antenna 2, antenna 3 and antenna 4 for convenience of explanation), high-pass filter 306,
Antenna in the application is unless otherwise specified, it can is single antenna, is also possible to the antenna sets or day of more antenna compositions
Linear array.
As shown in fig. 6,
The port P that the emission port TX and SP4T of n78 radio frequency TRX mould group are switched is connect, 4 T-ports point of SP4T switch
Not Lian Jie 4 SP2T switch the second T-port, the first T-port of 3 SP2T switch connects with 3 n78 radio frequency RX mould groups respectively
It connects, the first T-port of 1 SP2T switch connects n78 radio frequency TRX mould group receiving port RX, the port P point of 3 SP2T switch
Not Lian Jie antenna 2, antenna 3 and antenna 4, α high-pass filter be arranged between antenna and the port P of SP2T switch, and one
1 high-pass filter is at most set between antenna and the port P of 1 SP2T switch, the antenna of access where high-pass filter with
The isolation of the antenna of B8 RF front-end module connection is worst.
This technical solution increases high-pass filter in the antenna 1 of n78 radio frequency TRX mould group, can carry out to antenna 1
Filter, further decreases interference.
Refering to Fig. 7, Fig. 7 is 5G RF front-end module, and the 5G RF front-end module is as shown in fig. 7, specifically include: n78 is penetrated
301,3 n78 radio frequency RX mould groups 302 of frequency TRX mould group, 303,4, SP4T switch, 304,4, SP2T switch antenna (can be with LTE
Antenna duplexer illustrated here with antenna 1, antenna 2, antenna 3 and antenna 4 for convenience of explanation), 2 high-pass filters
306 (α=2), the antenna in the application is unless otherwise specified, it can is single antenna, is also possible to more antennas compositions
Antenna sets or aerial array.
As shown in fig. 7,
The port P that the emission port TX and SP4T of n78 radio frequency TRX mould group are switched is connect, 4 T-ports point of SP4T switch
Not Lian Jie 4 SP2T switch the second T-port, the first T-port of 3 SP2T switch connects with 3 n78 radio frequency RX mould groups respectively
It connects, the first T-port of 1 SP2T switch connects n78 radio frequency TRX mould group receiving port RX, the port P point of 2 SP2T switch
Not Lian Jie antenna 3 and antenna 4,2 SP2T switch the port P connection high-pass filter one end, 2 high-pass filters it is another
The antenna 1 that the antenna 1 of accesses where 2,2 end connection antenna 1, antenna high-pass filters is connect with B8 RF front-end module every
It is worst from spending.
This technical solution increases 2 high-pass filters in the antenna 1 of n78 radio frequency TRX mould group, can be to antenna 1 and day
Line 2 is filtered, and further decreases interference.
Optionally, above-mentioned α can also can connect for 3,3 high-pass filters in antenna 1, antenna 2, antenna 3 and SP2T
Between the port P of switch.Certainly in practical applications, α can also be 4, which can connect in antenna 1, day
Between the port P that line 2, antenna 3, antenna 4 and 4 SP2T are switched.
A kind of schematic diagram of n78 radio frequency TRX mould group is provided refering to Fig. 8, Fig. 8, as shown in figure 8, n78 radio frequency TRX mould group
Including at least power amplifier PA, low-noise amplifier LNA, SP2T switch, bandpass filter BPF, control unit.The mould group
PA, LNA, BPF work in n78 frequency range.
As shown in figure 8, the n78 radio frequency TRX mould group includes:
A port TX of one end connection RF transceiver, one end of low-noise amplifier LNA of power amplifier PA connects
Connect a port RX of RF transceiver, power amplifier PA, low-noise amplifier LNA the other end be separately connected SP2T switch
2 T-ports, SP2T switch the port P connection bandpass filter BPF one end, two of the other side of bandpass filter BPF
Port is respectively the n78 radio frequency TRX mould port group TX and the port RX；Described control unit is also used to control the power amplifier
The gain level of PA, the low-noise amplifier LNA.
A kind of n78 radio frequency RX mould group is provided refering to Fig. 9, Fig. 9, is included at least: low-noise amplifier LNA, bandpass filtering
Device BPF, control unit.LNA, BPF of the mould group work in n78 frequency range；Described control unit is used for the low noise amplification
The gain level of device LNA.
The bandpass filter BPF other end connects a T-port in SP2T, and the one end bandpass filter BPF connects low noise
One end of amplifier LNA, the other end of low-noise amplifier LNA connect a T-port in SP4T.
Refering to fig. 10, if LTE low frequency radio frequency front-end module supports R8 frequency range, the LTE low frequency radio frequency front-end module includes:
DRX mould group 401；The LTE low frequency radio frequency front-end module further include: DPDT switch 402, the antenna can collect based on antenna or
Diversity antenna；
Two T-ports of the DPDT switch are separately connected the TRX mould group 107, the DRX mould group, and the DPDT is opened
Two ports P closed are separately connected main collection antenna and diversity antenna；LPF104 be arranged the main collection antenna and the TRX mould group it
Between any position, which connect with DRX mould group 401 with baseband chip.Wherein dotted line is expressed as optional module.
1, Figure 11 provides offer a kind of electronic equipment refering to fig. 1, and the electronic equipment includes radio frequency system as shown in Figure 1
System；
The electronic equipment include at least it is following any one: mobile terminal.
Figure 11 shows the block diagram with the part-structure of electronic equipment provided by the embodiments of the present application.With reference to Figure 11, clothes
Business device include: radio frequency (Radio Frequency, RF) circuit 100, memory 920, input-output unit 930, sensor 950,
Voicefrequency circuit 960, Wireless Fidelity (Wireless Fidelity, WiFi) module 970, application processor AP980 and power supply
990 equal components.It will be understood by those skilled in the art that smart machine structure shown in Figure 11 is not constituted to smart machine
It limits, may include perhaps combining certain components or different component layouts than illustrating more or fewer components.
Input-output unit 930 can be used for receiving the number or character information of input, and generate the use with smart machine
Family setting and the related key signals input of function control.Specifically, input-output unit 930 may include touching display screen 933,
Handwriting pad 931 and other input equipments 932.Input-output unit 930 can also include other input equipments 932.Specifically,
Other input equipments 932 can include but is not limited to physical button, function key (such as volume control button, switch key etc.),
One of trace ball, mouse, operating stick etc. are a variety of.
AP980 is the control centre of smart machine, utilizes each portion of various interfaces and the entire smart machine of connection
Point, by running or execute the software program and/or module that are stored in memory 920, and calls and be stored in memory 920
Interior data execute the various functions and processing data of smart machine, to carry out integral monitoring to smart machine.Optionally,
AP980 may include one or more processing units；Optionally, AP980 can integrate application processor and modem processor,
In, the main processing operation system of application processor, user interface and application program etc., modem processor are mainly handled wirelessly
Communication.It is understood that above-mentioned modem processor can not also be integrated into AP980.
In addition, memory 920 may include high-speed random access memory, it can also include nonvolatile memory, example
Such as at least one disk memory, flush memory device or other volatile solid-state parts.Smart machine may also include at least
A kind of sensor 950, such as optical sensor, motion sensor, Proximity Sensor and other sensors.Specifically, light passes
Sensor may include ambient light sensor and proximity sensor, wherein ambient light sensor can be adjusted according to the light and shade of ambient light
The brightness of touching display screen is saved, proximity sensor can close touching display screen and/or backlight when mobile phone is moved in one's ear.Make
For one kind of motion sensor, accelerometer sensor can detect the size of (generally three axis) acceleration in all directions, static
When can detect that size and the direction of gravity, can be used to identify mobile phone posture application (such as horizontal/vertical screen switching, dependent game,
Magnetometer pose calibrating), Vibration identification correlation function (such as pedometer, tap) etc.；Proximity Sensor can be used for detecting
Distance between mobile phone and user.Gyroscope, barometer, hygrometer, thermometer, the infrared sensor that can also configure as mobile phone
Etc. other sensors, details are not described herein.
Voicefrequency circuit 960, loudspeaker 961, microphone 962 can provide the audio interface between user and electronic equipment.Sound
Electric signal after the audio data received conversion can be transferred to loudspeaker 961, be converted to by loudspeaker 961 by frequency circuit 960
Voice signal plays；On the other hand, the voice signal of collection is converted to electric signal by microphone 962, is received by voicefrequency circuit 960
After be converted to audio data, then after audio data is played AP980 processing, such as another mobile phone is sent to through RF circuit 910,
Or audio data is played to memory 920 to be further processed.
WiFi belongs to short range wireless transmission technology, and mobile phone can help user's transceiver electronics postal by WiFi module 970
Part, browsing webpage and access streaming video etc., it provides wireless broadband internet access for user.Although Figure 11 is shown
WiFi module 970, but it is understood that, and it is not belonging to must be configured into for smart machine, it can according to need completely
Do not change in the range of the essence of application and omits.
It should be noted that for the various method embodiments described above, for simple description, therefore, it is stated as a series of
Combination of actions, but those skilled in the art should understand that, the application is not limited by the described action sequence because
According to the application, some steps may be performed in other sequences or simultaneously.Secondly, those skilled in the art should also know
It knows, the embodiments described in the specification are all preferred embodiments, related actions and modules not necessarily the application
It is necessary.
In the above-described embodiments, it all emphasizes particularly on different fields to the description of each embodiment, there is no the portion being described in detail in some embodiment
Point, reference can be made to the related descriptions of other embodiments.
In several embodiments provided herein, it should be understood that disclosed device, it can be by another way
It realizes.For example, the apparatus embodiments described above are merely exemplary, such as the division of said units, it is only a kind of
Logical function partition, there may be another division manner in actual implementation, such as multiple units or components can combine or can
To be integrated into another system, or some features can be ignored or not executed.Another point, shown or discussed is mutual
Coupling, direct-coupling or communication connection can be through some interfaces, the indirect coupling or communication connection of device or unit,
It can be electrical or other forms.
Above-mentioned unit as illustrated by the separation member may or may not be physically separated, aobvious as unit
The component shown may or may not be physical unit, it can and it is in one place, or may be distributed over multiple
In network unit.It can select some or all of unit therein according to the actual needs to realize the mesh of this embodiment scheme
's.
It, can also be in addition, each functional unit in each embodiment of the application can integrate in one processing unit
It is that each unit physically exists alone, can also be integrated in one unit with two or more units.Above-mentioned integrated list
Member both can take the form of hardware realization, can also realize in the form of software functional units.
If above-mentioned integrated unit is realized in the form of SFU software functional unit and sells or use as independent product
When, it can store in a computer-readable access to memory.Based on this understanding, the technical solution of the application substantially or
Person says that all or part of the part that contributes to existing technology or the technical solution can body in the form of software products
Reveal and, which is stored in a memory, including some instructions are used so that a computer equipment
(can be personal computer, server or network equipment etc.) executes all or part of each embodiment above method of the application
Step.And memory above-mentioned includes: USB flash disk, read-only memory (ROM, Read-Only Memory), random access memory
The various media that can store program code such as (RAM, Random Access Memory), mobile hard disk, magnetic or disk.
Those of ordinary skill in the art will appreciate that all or part of the steps in the various methods of above-described embodiment is can
It is completed with instructing relevant hardware by program, which can store in a computer-readable memory, memory
May include: flash disk, read-only memory (English: Read-Only Memory, referred to as: ROM), random access device (English:
Random Access Memory, referred to as: RAM), disk or CD etc..
The embodiment of the present application is described in detail above, specific case used herein to the principle of the application and
Embodiment is expounded, the description of the example is only used to help understand the method for the present application and its core ideas；
At the same time, for those skilled in the art can in specific embodiments and applications according to the thought of the application
There is change place, in conclusion the contents of this specification should not be construed as limiting the present application.
It is the embodiment of the embodiment of the present application above, it is noted that those skilled in the art are come
It says, under the premise of not departing from the embodiment of the present application principle, several improvements and modifications can also be made, these improvements and modifications
It is considered as the protection scope of the application.
Claims (10)
1. a kind of radio frequency system characterized by comprising baseband chip, 5G RF front-end module, 5G antenna, LTE low frequency radio frequency
Front-end module and LTE antenna, wherein,
The 5G RF front-end module is connect with the baseband chip and the 5G antenna, for supporting the receipts of n78 frequency band signals
Hair；
The LTE low frequency radio frequency front-end module includes TRX mould group and low-pass filter, described TRX mould group one end and the base band
Chip connection, the other end are connect by the low-pass filter with the LTE antenna, for supporting the LTE low frequency lower than 1GHz
The transmitting-receiving of frequency band signals；
Wherein, the 5G RF front-end module and the LTE low frequency radio frequency front-end module can be under the controls of the baseband chip
Work at the same time, the low-pass filter is used to filter out the harmonic wave of the LTE low frequency band signal, the frequency range where the harmonic wave with
The n78 frequency range is least partially overlapped.
2. according to radio frequency system described in claims 1, which is characterized in that
The 5G RF front-end module supports the Sounding Reference Signal SRS switching of multiple antennas.
3. radio frequency system according to claim 1, which is characterized in that
The low frequency band signal includes: one of B20 frequency range, R8 frequency range, B28 frequency range or any combination.
4. radio frequency system according to claim 1, which is characterized in that the TRX mould group includes: power amplifier PA, low
Noise amplifier LNA, duplexer DUP, control unit；
One end for closing port connection LPF of the duplexer DUP, described two points of ports duplexer DUP are separately connected the function
One end of rate amplifier PA and one end of the low-noise amplifier LNA, the other end of the power amplifier PA and institute
The other end for stating low-noise amplifier LNA is separately connected baseband chip.
5. radio frequency system according to claim 1, which is characterized in that the 5G RF front-end module specifically includes: n78 is penetrated
Frequency TRX mould group, 3 n78 radio frequency RX mould groups, SP4T switch, 4 SP2T switches, antenna 1, antenna 2, antenna 3 and antenna 4,
In,
The port P that the emission port TX and the SP4T of the n78 radio frequency TRX mould group are switched is connect, and 4 of the SP4T switch
T-port be separately connected 4 SP2T switch the second T-port, 3 SP2T switch the first T-port respectively with 3 n78 radio frequency RX
The connection of mould group, the first T-port of 1 SP2T switch connect n78 radio frequency TRX mould group receiving port RX, the P of 4 SP2T switch
Port is separately connected antenna 1, antenna 2, antenna 3 and antenna 4.
6. radio frequency system according to claim 1, which is characterized in that the 5G RF front-end module specifically includes: n78 is penetrated
Frequency TRX mould group, 3 n78 radio frequency RX mould groups, SP4T switch, 4 SP2T switches, antenna 1, antenna 2, antenna 3 and antenna 4, α
High-pass filter, wherein
The port P that the emission port TX and the SP4T of the n78 radio frequency TRX mould group are switched is connect, and 4 of the SP4T switch
T-port be separately connected 4 SP2T switch the second T-port, 3 SP2T switch the first T-port respectively with 3 n78 radio frequency RX
The connection of mould group, the first T-port of 1 SP2T switch connect the n78 radio frequency TRX mould group receiving port RX, what 4 SP2T were switched
The port P be separately connected antenna 1, antenna 2, antenna 3 and antenna 4, the α high-pass filter setting is switched in antenna and SP2T
The port P between, and 1 high-pass filter is at most set between an antenna and the port P of 1 SP2T switch, α take less than etc.
In 4 positive integer.
7. radio frequency system according to claim 6, which is characterized in that
The n78 radio frequency TRX mould group includes: power amplifier PA, low-noise amplifier LNA, SP2T switch, bandpass filter
BPF, control unit；
Wherein, the port P of the SP2T switch connects bandpass filter BPF, described in two T-ports difference that the SP2T is switched
Power amplifier PA, the low-noise amplifier LNA；For described control unit for controlling the SP2T switch, the control is single
Member is also used to control the gain level of the power amplifier PA, the low-noise amplifier LNA.
8. radio frequency system according to claim 3, which is characterized in that if the low frequency band signal includes R8 frequency range, institute
State LTE low frequency radio frequency front-end module further include: DRX mould group；The LTE low frequency radio frequency front-end module further include: DPDT switch, institute
Stating LTE antenna includes main collection antenna and diversity antenna；
Two T-ports of DPDT switch are separately connected the TRX mould group, the DRX mould group, and two of the DPDT switch
The port P is separately connected main collection antenna and diversity antenna；The low-pass filter be arranged the main collection antenna and the TRX mould group it
Between any position.
9. radio frequency system according to claim 6, which is characterized in that
The n78 radio frequency RX mould group includes: low-noise amplifier LNA, bandpass filter BPF, control unit
The bandpass filter BPF connection low-noise amplifier LNA, described control unit are used for the low-noise amplifier
The gain level of LNA.
10. a kind of electronic equipment, which is characterized in that the electronic equipment includes as described in any one of claims 1-9 penetrates
Display system.
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| CN201910214289.XA CN109951207A (en) | 2019-03-20 | 2019-03-20 | Radio frequency system and electronic equipment |
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