CN107863977B - A kind of RF front end structure and communicating terminal - Google Patents
A kind of RF front end structure and communicating terminal Download PDFInfo
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- CN107863977B CN107863977B CN201711424496.5A CN201711424496A CN107863977B CN 107863977 B CN107863977 B CN 107863977B CN 201711424496 A CN201711424496 A CN 201711424496A CN 107863977 B CN107863977 B CN 107863977B
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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
- H04B1/06—Receivers
- H04B1/16—Circuits
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
- H04B1/38—Transceivers, i.e. devices in which transmitter and receiver form a structural unit and in which at least one part is used for functions of transmitting and receiving
- H04B1/40—Circuits
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- Computer Networks & Wireless Communication (AREA)
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- Radio Transmission System (AREA)
Abstract
The present invention relates to a kind of RF front end structure and communicating terminal, which includes: transceiver, the first receiving path and the second receiving path；First receiving path includes: the first frequency divider and the first main collection receiving path, the second main collection receiving path that connect respectively with the first frequency divider；Second receiving path includes: the second frequency divider and the first diversity reception access connecting respectively with the second frequency divider, the second diversity reception access.The present invention in receiving path by being arranged frequency divider, realize the master for receiving different frequency range, diversity reception signal, TDD-LTE+FDD-LTE inter-band DLCA design is supported by realizing on the basis of original radio frequency mould group, realizes the demand for meeting different frequency ranges with lower cost.
Description
Technical field
The present invention relates to mobile communication technology field more particularly to a kind of RF front end structures and communicating terminal.
Background technique
Currently, the growth of the demand with consumer to the business to become increasingly abundant and life style of networking, mobile network will
Continuous evolution.Mobile industry is making great efforts to formulate so that mobile network can satisfy to the growth property demand of wireless broadband business
This technical solution.Mobile network is with exciting paces sustainable development.Although in next ten years mobile networks
On data business volume can be beyond the data business volume in current broadband connection, but following mobile network can be well
It is supported to the service that current several megabits (multi-megabit) are fixedly connected with service is had exceeded.It will develop
In journey and it can be realized the wireless access technology of this network and be known as the long term evolution of universal land radio access web, or referred to as
LTE.In existing LTEDLCA design, mobile terminal mainly support FDDLTEinter-band or TDDLTEinter-band this two
Kind scheme.But while support the DLCA of FDD+TDD standard to combine, platform scheme provider is related mature currently without providing
Hardware circuit design.
Summary of the invention
In order to solve the deficiencies in the prior art, the present invention provides a kind of RF front end structures, comprising: transceiver,
One receiving path and the second receiving path；First receiving path includes: the first frequency divider and divides respectively with described first
The first main collection receiving path, the second main collection receiving path of device connection；Second receiving path includes: the second frequency divider and divides
The first diversity reception access, the second diversity reception access not connect with second frequency divider；
First frequency divider, the main collection for extracting the first frequency range from each UHF band reception signal received receive letter
Number, and pass through the described first main first port for collecting receiving path and being sent to the transceiver；And extract the second frequency range
Main collection receives signal, and the third port of the transceiver is sent to by the described second main collection receiving path；
Second frequency divider, the diversity reception for extracting the first frequency range from each UHF band reception signal received are believed
Number, and it is sent to by the first diversity reception access the second port of the transceiver；And extract the second frequency range
Diversity reception signal, and it is sent to by the second diversity reception access the 4th port of the transceiver.
Optionally, first receiving path includes: sequentially connected main collection antenna end, the first frequency divider, radio-frequency front-end
Mould group, multiband receive and dispatch four work devices, radio frequency single-pole three-throw switch and transceiver；Each frequency range that the main collection antenna end receives
It receives signal and is sent to first frequency divider, first frequency divider extracts described first from each UHF band reception signal
After the main collection of frequency range receives signal, four work devices, radio frequency single-pole three-throw switch are received and dispatched to described by radio-frequency front-end mould group, multiband
After the main collection of first frequency range receives signal progress respective handling, it is sent to the first port of transceiver；
First receiving path further include: sequentially connected main collection antenna end, the first frequency divider, radio-frequency front-end mould group,
First filter, power amplifier mould group and transceiver；Each UHF band reception signal that the main collection antenna end receives is sent to described
First frequency divider, the main collection that first frequency divider extracts second frequency range from each UHF band reception signal receive signal
Afterwards, signal is received by the main collection of radio-frequency front-end mould group, first filter and power amplifier mould group to second frequency range to carry out accordingly
After processing, it is sent to the third port of the transceiver；
Second receiving path includes: sequentially connected diversity antenna end, the second frequency divider, diversity RF switch, more
Frequency band filter group and transceiver；Each UHF band reception signal that the diversity antenna termination receives is sent to second frequency dividing
Device, second frequency divider pass through after the diversity reception signal for extracting first frequency range in each UHF band reception signal
After diversity RF switch and multiband filter group carry out respective handling to the diversity reception signal of first frequency range, it is sent to
The second port of the transceiver；
Second receiving path includes: sequentially connected diversity antenna end, the second frequency divider, diversity RF switch,
Two filters and transceiver；Each UHF band reception signal that the diversity antenna termination receives is sent to second frequency divider,
Second frequency divider passes through diversity after the diversity reception signal for extracting second frequency range in each UHF band reception signal
After RF switch and second filter carry out respective handling to the diversity reception signal of second frequency range, it is sent to the transmitting-receiving
4th port of letter machine.
Optionally, the model SKY77928-21 of the radio-frequency front-end mould group, the model of the transceiver
WTR2965, the model RF1681A of the diversity RF switch.
Optionally, the first port is PRX_MB2 pin；The second port is DRX_MB2 pin；The third end
Mouth is PRX_HB2 pin；4th port is DRX_HB2 pin.
Optionally, RF front end structure further include: the sequentially connected transceiver, the first transmitting path and second
Transmitting path；First transmitting path includes: sequentially connected third filter and power amplifier mould group；Second transmitting path
It include: that sequentially connected multiband receives and dispatches four work devices, radio-frequency front-end mould group, the first frequency divider and main collection antenna end；
The transceiver generates transmitting signal, receives and dispatches four work devices by third filter, power amplifier mould group, multiband, penetrates
After frequency front end module and the first frequency divider carry out respective handling, the transmitting signal is emitted by the main collection antenna end.
Optionally, the power amplifier mould group includes: restructural multimode multi-frequency power amplifier, the restructural multimode multi-frequency function
Rate amplifier includes: the power amplifier module of multiple and different frequency ranges.
Optionally, first frequency range includes: B1/B3 frequency range；Second frequency range includes: B38 frequency range.
The embodiment of the invention also provides a kind of communicating terminals, comprising: the RF front end structure as described in any of the above-described.
Above-mentioned technical proposal of the invention has the advantages that the present invention by receiving path compared with prior art
Frequency divider is set, the master for receiving different frequency range, diversity reception signal are realized, by real on the basis of original radio frequency mould group
Support TDD-LTE+FDD-LTE inter-band DLCA design is showed, has realized and meet different frequency ranges with lower cost
Demand.
Detailed description of the invention
Fig. 1 is a kind of RF front end structure structural schematic diagram provided in an embodiment of the present invention；
Fig. 2 be another embodiment of the present invention provides a kind of RF front end structure structural schematic diagram；
Fig. 3 be another embodiment of the present invention provides a kind of RF front end structure structural schematic diagram；
Fig. 4 is a kind of RF front end structure structural schematic diagram that further embodiment of this invention provides.
In figure: 1, transceiver；2, the first frequency divider；3, the second frequency divider；4, main collection antenna end；5, radio-frequency front-end mould
Group；6, multiband receives and dispatches four work devices；7, radio frequency single-pole three-throw switch；8, first filter；9, power amplifier mould group；10, diversity antenna
End；11, diversity RF switch；12, multiband filter group；13, second filter；14, third filter.
Specific embodiment
In order to make the object, technical scheme and advantages of the embodiment of the invention clearer, below in conjunction with the embodiment of the present invention
In attached drawing, technical scheme in the embodiment of the invention is clearly and completely described, it is clear that described embodiment is
A part of the embodiments of the present invention, instead of all the embodiments.Based on the embodiments of the present invention, ordinary skill people
Member's every other embodiment obtained without making creative work, shall fall within the protection scope of the present invention.
As shown in Figure 1, a kind of RF front end structure structural schematic diagram provided in an embodiment of the present invention, comprising: transceiver
1, the first receiving path and the second receiving path；First receiving path include: the first frequency divider 2 and respectively with the first frequency divider 2
The first main collection receiving path, the second main collection receiving path of connection；Second receiving path include: the second frequency divider 3 and respectively with
The first diversity reception access, the second diversity reception access of second frequency divider 3 connection；
First frequency divider 2, the main collection for extracting the first frequency range from each UHF band reception signal received receive signal,
And the first port of transceiver 1 is sent to by the first main collection receiving path；And extract the main collection reception letter of the second frequency range
Number, and pass through the second main third port for collecting receiving path and being sent to transceiver 1；
Second frequency divider 3, for extracting the diversity reception signal of the first frequency range from each UHF band reception signal received,
And the second port of transceiver 1 is sent to by the first diversity reception access；And extract the diversity reception letter of the second frequency range
Number, and it is sent to by the second diversity reception access the 4th port of transceiver 1.
In above-described embodiment, realized by the way that frequency divider is arranged in the first main collection receiving path and the second main collection receiving path
It extracts corresponding frequency band signals from the frequency band signals received and passes through different accesses respectively and transmitted, similarly in diversity
Frequency divider is also provided in receiving path, to construct the diversity reception signal for receiving different frequency range, it is thus achieved that some components
Share, on the basis of unobvious increases cost, which meets the needs of different regions are to DLCA, pass through construct one
The novel radio-frequency front-end mould group 5 of kind realizes that multi-band signal receives.
As shown in Figures 2 and 3, another embodiment of the present invention provides a kind of radio-frequency front-end modular structure schematic diagram, this
In embodiment, the first receiving path includes: sequentially connected main collection antenna end 4, the first frequency divider 2, radio-frequency front-end mould group 5, more
Frequency range receives and dispatches four work devices 6, radio frequency single-pole three-throw switch 7 and transceiver 1；Each UHF band reception letter that main collection antenna end 4 receives
It number is sent to the first frequency divider 2, the main collection that the first frequency divider 2 extracts the first frequency range from each UHF band reception signal receives signal
Afterwards, four work devices 6, radio frequency single-pole three-throw switch 7 is received and dispatched by radio-frequency front-end mould group 5, multiband to receive the main collection of the first frequency range
After signal carries out respective handling, it is sent to the first port of transceiver 1；Specifically, receiving each frequency range by main collection antenna end 4
It receives signal and is transferred to the first frequency divider 2, the main collection that the first frequency divider 2 extracts the first frequency range from each UHF band reception signal receives
Signal, after being transferred to the receiving path of radio-frequency front-end mould group 5, the receiving path of radio-frequency front-end mould group 5 is by the main collection of the first frequency range
Reception signal is transferred to multiband four work devices 6 of transmitting-receiving and is filtered, and multiband receives and dispatches four work devices 6 for the first frequency range after filtering
Main collection receive signal and be transferred to the first port of transceiver 1 by radio frequency single-pole three-throw switch 7；
First receiving path further include: sequentially connected main collection antenna end 4, the first frequency divider 2, radio-frequency front-end mould group 5,
One filter 8, power amplifier mould group 9 and transceiver 1；Each UHF band reception signal that main collection antenna end 4 receives is sent to first point
Frequency device 2, the first frequency divider 2 pass through radio-frequency front-end after the main collection reception signal for extracting the second frequency range in each UHF band reception signal
After mould group 5, first filter 8 and power amplifier mould group 9 receive signal progress respective handling to the main collection of the second frequency range, it is sent to transmitting-receiving
The third port of letter machine 1；Specifically, receiving each UHF band reception signal by main collection antenna end 4 is transferred to the first frequency divider 2, the
The main collection that one frequency divider 2 extracts the second frequency range from each UHF band reception signal receives signal, is transferred to connecing for radio-frequency front-end mould group 5
After receiving access, the main collection reception signal of the second frequency range is transferred to first filter 8 and is filtered by the receiving path of radio-frequency front-end,
The influence for receiving the noise in signal to result is reduced, the main collection of filtered second frequency range is received signal by first filter 8
It is transferred to power amplifier mould group 9 and carries out power amplification, excessively serious to reduce filtered distorted signals, power amplifier mould group is by power amplification
The main collection of the second frequency range afterwards receives the third port that signal is transferred to transceiver 1；
Second receiving path includes: sequentially connected diversity antenna end 10, the second frequency divider 3, diversity RF switch 11, more
Frequency band filter group 12 and transceiver 1；Each UHF band reception signal that diversity antenna end 10 receives is sent to the second frequency divider
3, the second frequency divider 3 passes through diversity RF switch after the diversity reception signal for extracting the first frequency range in each UHF band reception signal
11 and after multiband filter group 12 carries out respective handling to the diversity reception signal of the first frequency range, it is sent to transceiver 1
Second port；Each UHF band reception signal is received by diversity antenna end 10 and is transferred to the second frequency divider 3, and the second frequency divider 3 is from each
The diversity reception signal that the first frequency range is extracted in UHF band reception signal, after being transferred to diversity RF switch 11, diversity RF switch
The diversity reception signal of first frequency range is transferred to multiband filter group 12 by 11 to be filtered, and is filtered out in diversity reception signal
Noise, filtered first diversity reception signal is transferred to the second port of transceiver 1 by multiband filter；
Second receiving path includes: sequentially connected diversity antenna end 10, the second frequency divider 3, diversity RF switch 11,
Two filters 13 and transceiver 1；Each UHF band reception signal that diversity antenna end 10 receives is sent to the second frequency divider 3, the
Two-divider 3 passes through 11 He of diversity RF switch after the diversity reception signal for extracting the second frequency range in each UHF band reception signal
After second filter 13 carries out respective handling to the diversity reception signal of the second frequency range, it is sent to the 4th port of transceiver 1,
Each UHF band reception signal is received by diversity antenna end 10 and is transferred to the second frequency divider 3, and the second frequency divider 3 is believed from each UHF band reception
The diversity reception signal that the second frequency range is extracted in number, after being transferred to diversity RF switch 11, diversity RF switch 11 by second frequency
The diversity reception signal of section is transferred to second filter 13 and is filtered, to filter out the noise of diversity reception signal, the second filter
The diversity reception signal of filtered second frequency range is transferred to the 4th port of transceiver 1 by wave device 13；Wherein, radio frequency reception
Front end module includes transmitting path and receiving path, and the function of radio-frequency front-end mould group 5 and diversity RF switch 11 is used to penetrate
Frequency signal integrity receives, and in above scheme, all has partial common in the first receiving path and the second receiving path
Electronic component is realized by frequency divider signal distinguishing transmission, and then realizes the reception of multi-band signal.
In the present embodiment, the model SKY77928-21 of radio-frequency front-end mould group 5, the model of transceiver 1
WTR2965, the model RF1681A of diversity RF switch 11.
In the present embodiment, the model SKY77928-21 based on radio-frequency front-end mould group 5, first port are PRX_MB2 pipe
Foot；Second port is DRX_MB2 pin；Third port is PRX_HB2 pin；4th port is DRX_HB2 pin.
As shown in figure 4, a kind of radio-frequency front-end modular structure schematic diagram that further embodiment of this invention provides, in the present embodiment
In, the RF front end structure further include: sequentially connected transceiver 1, the first transmitting path and the second transmitting path；First hair
Penetrating access includes: sequentially connected third filter 14 and power amplifier mould group 9；Second transmitting path includes: sequentially connected multifrequency
Four work devices 6 of section transmitting-receiving, radio-frequency front-end mould group 5, the first frequency divider 2 and main collection antenna end 4；
Transceiver 1 generates transmitting signal, receives and dispatches four work devices 6 by third filter 14, power amplifier mould group 9, multiband, penetrates
It, will transmitting signal transmitting by main collection antenna end 4 after frequency front end module 5 and the first frequency divider 2 carry out respective handling；Specifically,
Transceiver 1 generates transmitting signal, and transmitting signal is transferred to third filter 14 and is filtered, and third filter 14 will be filtered
Transmitting signal after wave is transferred to power amplifier mould group 9 and carries out power amplification, and amplified transmitting signal is transferred to more by power amplifier mould group 9
Frequency range is received and dispatched four work devices 6 and is filtered again, and multiband, which will receive and dispatch four work devices 6, to be transferred to radio frequency by filtered transmitting signal again
The transmitting path of front end module 5, transmitting path are emitted signal by the first frequency divider 2 and main collection antenna end 4.
In the present embodiment, power amplifier mould group 9 includes: restructural multimode multi-frequency power amplifier, restructural multimode multi-frequency function
Rate amplifier includes: the power amplifier module of multiple and different frequency ranges, is total in transmitting path and receiving path in above-described embodiment
It is more by setting restructural multimode for power amplifier mould group 9 to realize while being emitted and being received work with power amplifier mould group 9
Frequency power amplifier provides multiple non-interfering power amplifiers, avoids emitting and reception work has an impact from each other.
In the present embodiment, the first frequency range includes: B1/B3 frequency range；Second frequency range includes: B38 frequency range, the first frequency range and
Two frequency range receiving and transmitting signals can also by above-mentioned hardware circuit design realize FDD-LTE and TDD-LTE on physical path and
Deposit, platform supplier for B3+B38 DLCA demand update radio-frequency driven software and minislot parameter configuration etc., solve FDD and
The received synchronization process problem of wireless data in the case of two kinds of different working modes co-operation of TDD.
The design ensure that Signal segregation degree mutual when B3 and B38 are worked at the same time meets system performance requirements, this
Outside, which supports B39+B41 simultaneously, and the inter-band such as B1+B3, B3+B7 DLCA design can emit as a result, according to frequency range
It receives and needs to be adjusted the design, improve the applicability of the present apparatus.
On the basis of replacing transceiver 1, which, which can also increase, supports B5+B1, the LB+MB such as B5+B3 combination, with
And the LB+HB such as B20+B7 combination.Low frequency port can support B12/17, the LB frequency range such as B13 can there are also L_TRx4-7 more than needed
B12/17+B2, LB+MB, the LB+HB combination such as B12/17+B4, B12/17+B7 are supported to continue extension.
The embodiment of the invention also provides a kind of communicating terminals for realizing the above method, comprising: such as any of the above-described radio frequency
Front end structure.
Finally, it should be noted that the above embodiments are merely illustrative of the technical solutions of the present invention, rather than its limitations；Although
Present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that: it still may be used
To modify the technical solutions described in the foregoing embodiments or equivalent replacement of some of the technical features；
And these are modified or replaceed, technical solution of various embodiments of the present invention that it does not separate the essence of the corresponding technical solution spirit and
Range.
Claims (7)
1. a kind of RF front end structure characterized by comprising transceiver, the first receiving path and the second receiving path；Institute
Stating the first receiving path includes: the first frequency divider and the first main collection receiving path connecting respectively with first frequency divider,
Two main collection receiving paths；Second receiving path include: the second frequency divider and connect respectively with second frequency divider
One diversity reception access, the second diversity reception access；
First frequency divider, the main collection for extracting the first frequency range from each UHF band reception signal received receive signal,
And the first port of the transceiver is sent to by the described first main collection receiving path；And extract the main collection of the second frequency range
Signal is received, and is sent to the third port of the transceiver by the described second main collection receiving path；
First receiving path specifically includes: sequentially connected main collection antenna end, the first frequency divider, radio-frequency front-end mould group, more
Frequency range receives and dispatches four work devices, radio frequency single-pole three-throw switch and transceiver；Each UHF band reception letter that the main collection antenna end receives
Number it is sent to first frequency divider, first frequency divider extracts first frequency range from each UHF band reception signal
After main collection receives signal, four work devices, radio frequency single-pole three-throw switch are received and dispatched to first frequency by radio-frequency front-end mould group, multiband
After the main collection of section receives signal progress respective handling, it is sent to the first port of transceiver；
First receiving path specifically includes: sequentially connected main collection antenna end, the first frequency divider, radio-frequency front-end mould group,
One filter, power amplifier mould group and transceiver；Main each UHF band reception signal for receiving of collection antenna end is sent to described the
One frequency divider, the main collection that first frequency divider extracts second frequency range from each UHF band reception signal receive signal
Afterwards, signal is received by the main collection of radio-frequency front-end mould group, first filter and power amplifier mould group to second frequency range to carry out accordingly
After processing, it is sent to the third port of the transceiver；
Second frequency divider, for extracting the diversity reception signal of the first frequency range from each UHF band reception signal received,
And the second port of the transceiver is sent to by the first diversity reception access；And extract the diversity of the second frequency range
Signal is received, and is sent to the 4th port of the transceiver by the second diversity reception access；
Second receiving path includes: sequentially connected diversity antenna end, the second frequency divider, diversity RF switch, multiband
Filter group and transceiver；Each UHF band reception signal that the diversity antenna termination receives is sent to second frequency divider,
Second frequency divider passes through diversity after the diversity reception signal for extracting first frequency range in each UHF band reception signal
After RF switch and multiband filter group carry out respective handling to the diversity reception signal of first frequency range, it is sent to described
The second port of transceiver；
Second receiving path includes: sequentially connected diversity antenna end, the second frequency divider, diversity RF switch, the second filter
Wave device and transceiver；Each UHF band reception signal that the diversity antenna termination receives is sent to second frequency divider, described
Second frequency divider passes through diversity radio frequency after the diversity reception signal for extracting second frequency range in each UHF band reception signal
After switch and second filter carry out respective handling to the diversity reception signal of second frequency range, it is sent to the transceiver
The 4th port.
2. a kind of RF front end structure according to claim 1, which is characterized in that the model of the radio-frequency front-end mould group
SKY77928-21, the model WTR2965, the model RF1681A of the diversity RF switch of the transceiver.
3. a kind of RF front end structure according to claim 2, which is characterized in that the first port is PRX_MB2 pipe
Foot；The second port is DRX_MB2 pin；The third port is PRX_HB2 pin；4th port is DRX_HB2
Pin.
4. a kind of RF front end structure according to claim 1, which is characterized in that the RF front end structure further include: according to
The transceiver, the first transmitting path and the second transmitting path of secondary connection；First transmitting path includes: to be sequentially connected
Third filter and power amplifier mould group；Second transmitting path includes: before sequentially connected multiband receives and dispatches four work devices, radio frequency
Hold mould group, the first frequency divider and main collection antenna end；
The transceiver generates transmitting signal, before receiving and dispatching four work devices, radio frequency by third filter, power amplifier mould group, multiband
After holding mould group and the first frequency divider to carry out respective handling, the transmitting signal is emitted by the main collection antenna end.
5. a kind of RF front end structure according to claim 4, which is characterized in that the power amplifier mould group includes: restructural
Multimode multi-frequency power amplifier, the restructural multimode multi-frequency power amplifier include: the power amplifier of multiple and different frequency ranges
Module.
6. any a kind of RF front end structure in -5 according to claim 1, which is characterized in that the first frequency range packet
It includes: B1/B3 frequency range；Second frequency range includes: B38 frequency range.
7. a kind of communicating terminal characterized by comprising such as RF front end structure as claimed in any one of claims 1 to 6.
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| CN108832959B (en) * | 2018-08-29 | 2024-02-13 | Oppo（重庆）智能科技有限公司 | Radio frequency front end module and electronic device |
| CN109474284B (en) * | 2018-12-10 | 2021-01-05 | 惠州Tcl移动通信有限公司 | Radio frequency architecture and mobile terminal |
| CN109743072B (en) * | 2018-12-26 | 2021-04-16 | 深圳市万普拉斯科技有限公司 | Mobile terminal signal transceiver and control method thereof |
| CN211670850U (en) * | 2019-04-24 | 2020-10-13 | 株式会社村田制作所 | High-frequency signal transmitting/receiving circuit and high-frequency signal transmitting/receiving device |
| CN112994859B (en) * | 2019-12-18 | 2022-09-09 | 深圳市万普拉斯科技有限公司 | Frequency band path adjusting method, device, terminal and storage medium |
| CN111600616B (en) * | 2020-07-10 | 2020-12-04 | 锐石创芯（深圳）科技有限公司 | Radio frequency front end architecture, antenna device and communication terminal |
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