CN107888208A - A kind of radio frequency topological system for LTE FDD carrier aggregations - Google Patents
A kind of radio frequency topological system for LTE FDD carrier aggregations Download PDFInfo
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- CN107888208A CN107888208A CN201711131136.6A CN201711131136A CN107888208A CN 107888208 A CN107888208 A CN 107888208A CN 201711131136 A CN201711131136 A CN 201711131136A CN 107888208 A CN107888208 A CN 107888208A
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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
- H04B1/005—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 adapting radio receivers, transmitters andtransceivers for operation on two or more bands, i.e. frequency ranges
-
- 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
- H04B1/005—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 adapting radio receivers, transmitters andtransceivers for operation on two or more bands, i.e. frequency ranges
- H04B1/0067—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 adapting radio receivers, transmitters andtransceivers for operation on two or more bands, i.e. frequency ranges with one or more circuit blocks in common for different bands
-
- 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)
- Signal Processing (AREA)
- Transceivers (AREA)
Abstract
The present invention relates to a kind of communication data transfer, more particularly to radio frequency topological system.Including radio-frequency antenna receiving circuit and radio-frequency antenna radiating circuit, radio-frequency antenna receiving circuit receives down going channel data, including：Reception antenna, receive the signal in default band limits；Reception antenna switchs, and controls the working condition of radio-frequency antenna receiving circuit；First bandpass filter, the signal sended over to receiving duplexer are filtered and exported；Frequency divider, reception antenna is switched into signal and output of the signal frequency split sent into different frequency；Radio-frequency antenna radiating circuit sends data feedback channel data, including：Sum of fundamental frequencies device, it would be desirable to which multiple signals of transmitting carry out sum of fundamental frequencies；Second bandpass filter, up passband data are filtered；Transmitting antenna switchs, and controls the working condition of radio-frequency antenna radiating circuit；Using the relatively simple wave filter of technology, frequency divider and sum of fundamental frequencies device replace the multiplexer of technical sophistication so that the realization of multi-transceiver technology becomes simple.
Description
Technical field
The present invention relates to a kind of radio frequency topological system, more particularly to a kind of radio frequency topology for LTE-FDD carrier aggregations
System.
Background technology
In the field of communications, it is a kind of most direct in order to meet the requirement of single user peak rate and power system capacity lifting
Solution is exactly to increase system transmission bandwidth.But under existing frequency range distribution situation, it is difficult to find one section of continuous frequency spectrum
Resource is available, therefore LTE-Advanced (Long Term Evolution-Advanced, Long Term Evolution upgrading
Version) one technology for increasing transmission bandwidth of system introducing, that is, CA (Carrier Aggregation, carrier aggregation).
The topological structure of carrier aggregation is as shown in figure 1, ANT1 is antenna at present, and IC1 is duplexer, and IC2 is duplexer,
IC3 is four work devices.The topological structure shares an antenna ANT1 and receives and launch to realize.Data-signal, command signal it is upper
Row and downstream passband need to be separated by duplexer IC2, four work device IC3.To LTE-FDD (Long Term
Evolution-Frequency Division Dual, Long Term Evolution-FDD) for, upstream band and downlink frequency
Band is separated.Any one duplexer, all equivalent to two bandpass filters are used, as shown in Fig. 2 working as up-downgoing frequency band
Protection bandwidth it is not wide enough when, it is easy to cause the data of up-downgoing to disturb, especially up interference of the transmission to downlink reception.
The content of the invention
Interference is easily caused for the row of channels up and down of current duplexer, the present invention provides one kind and is directed to LTE-FDD carrier waves
The radio frequency topological system of polymerization.
The technical proposal for solving the technical problem of the invention is：
A kind of radio frequency topological system for LTE-FDD carrier aggregations, including radio-frequency antenna receiving circuit and radio-frequency antenna
Radiating circuit, wherein：
The radio-frequency antenna receiving circuit is used to receive down going channel data, including：
Reception antenna, receive the signal in default band limits；
Reception antenna switchs, and is connected with the reception antenna, for controlling the work shape of the radio-frequency antenna receiving circuit
State；
First bandpass filter, switch and connect with the reception antenna, for being sended over to reception antenna switch
Signal be filtered, and exported；
Frequency divider, switch and connect with the reception antenna, the reception antenna is switched into the signal frequency split sent into difference
The signal of frequency, and exported；
The radio-frequency antenna radiating circuit is used to send data feedback channel data, including：
Sum of fundamental frequencies device, for the multiple signals for needing to launch to be carried out into sum of fundamental frequencies；
Second bandpass filter, for being filtered to up passband data；
Transmitting antenna switchs, and the sum of fundamental frequencies device and the second bandpass filter is connected respectively, for controlling the radio-frequency antenna
The working condition of radiating circuit；
Transmitting antenna, the transmitting antenna switch is connected, sends the signal through transmitting antenna switch transmission.
Preferably, the first reception signal end of connection first bandpass filter is included, for will be through described first
Signal after bandpass filter processing is transmitted to the first reception signal end.
Preferably, multiple fractional frequency signal ends of the connection frequency divider are included, for will be after frequency divider frequency dividing
Signal export respectively to each fractional frequency signal end.
Preferably, the first transmission signal end of connection second bandpass filter is included, for what will be sent
Row signal is transmitted to second bandpass filter and is filtered.
Preferably, include multiple sum of fundamental frequencies signal ends of the connection sum of fundamental frequencies device, for will sum of fundamental frequencies each sum of fundamental frequencies letter
Number transmit to the sum of fundamental frequencies device and carry out sum of fundamental frequencies.
Preferably, in addition to radiator, for being radiated to the radio frequency reception antenna circuit and radio frequency transmitter circuitry.
Preferably, the radiator is gilled radiator or liquid cooling heat radiator.
Preferably, the transmitting antenna is switched within the cycle of each carrier aggregation by multiple asynchronous on multiple carrier frequency
Or Simultaneous Physical frame switchs to the reception antenna and sends radio broadcasting signal.
Preferably, the reception antenna switch receives multiple physics using single broad band tuner or multiple arrowband tuners
Radio broadcasting signal on frame.
Preferably, the carrier wave of the carrier aggregation is the carrier wave of discrete frequency bands.
Beneficial effects of the present invention：A kind of radio frequency topological system for LTE-FDD carrier aggregations of the present invention, is divided into and penetrating
Two independent circuits of frequency reception antenna circuit and radio-frequency transmissions antenna circuit, physically antenna is received and antenna transmitting divides
Open, reduce the data interference on uplink downlink, improve the data transmit-receive performance of mobile terminal.It is and relatively simple using technology
Single wave filter, frequency divider and sum of fundamental frequencies device replace the multiplexer of technical sophistication so that the realization of multi-transceiver technology becomes simple.
Brief description of the drawings
Fig. 1 is LTE carrier aggregation topological structure schematic diagram of the prior art；
Fig. 2 is two filter pass band schematic diagrames of duplexer in Fig. 1；
Fig. 3 is a kind of radio frequency topological system schematic diagram for LTE-FDD carrier aggregations of the present invention.
Embodiment
The invention will be further described with specific embodiment below in conjunction with the accompanying drawings, but not as limiting to the invention.
Duplexer in Fig. 1 is LTE-FDD bottleneck device.For carrier aggregation, a four work devices need to include four
Wave filter, that is, four passbands, therefore multiple bandpass filters are integrated in limited space, it is easy to cause up-downgoing
Data are disturbed, nor are easily reduced this interference.And the core of carrier aggregation be in a frequency range and it is across frequency range will be more
Individual radio channel is combined together, and is used as a wider frequency band, is realized by unified Base-Band Processing in broadband
High-speed transfer, reduce delay.
Therefore, the present invention is directed to problems of the prior art, there is provided one kind as shown in Figure 3 is directed to LTE-FDD
The radio frequency topological system of carrier aggregation, the system be broadly divided into radio-frequency antenna receiving circuit and radio-frequency antenna radiating circuit the two
Independent circuit, physically separates receiving portion and emitting portion, so as to reduce the data of data feedback channel and down going channel
Interference.
Specifically, described radio-frequency antenna receiving circuit is used for the data for receiving down going channel, and it includes：Reception antenna
ANT2, reception antenna switch IC4, the first bandpass filter IC5 and frequency divider IC6.Wherein, reception antenna ANT2 is used to receive
The signal of default band limits.Reception antenna switch IC4 one end is connected with reception antenna ANT2, and the other end connects first band respectively
Bandpass filter IC5 and frequency divider IC6, it is mainly used in the working condition for controlling whole radio-frequency antenna receiving circuit, for example controls
Reception antenna ANT2 on or off, so as to antenna reception or wave-off.First bandpass filter IC5 is to downstream passband number
According to being filtered, that is, the signal sended over to receiving duplexer IC4 is filtered, and is exported to its other end and connected
The the first reception signal end RX3 connect.Reception antenna is switched IC4 received signals frequency dividing into different frequency by frequency divider IC6
Signal, and export to each fractional frequency signal end (RX4, RX5), two fractional frequency signal ends employed in the present embodiment.
Radio-frequency antenna radiating circuit is used to send data feedback channel data, and it includes：Transmitting antenna ANT3, transmitting antenna switch
IC7, the second bandpass filter IC8 and sum of fundamental frequencies device IC9.The knot of the radio-frequency antenna radiating circuit is introduced from the order of signal flow direction
Structure.First, multiple sum of fundamental frequencies signal ends (TX4, TX5) are connected with sum of fundamental frequencies device IC9 input, will sum of fundamental frequencies each sum of fundamental frequencies letter
Number transmit to sum of fundamental frequencies device IC9 and carry out sum of fundamental frequencies, in the present embodiment, be only enumerated two sum of fundamental frequencies signal ends (TX4, TX5), specifically regard
Depending on situation.Secondly, the first transmission signal end TX3 of a second bandpass filter IC8 of connection, the signal that will be sent are included
Transmit to the second bandpass filter IC8, the second bandpass filter IC8 and the signal is filtered.The one of transmitting antenna switch IC7
End connects sum of fundamental frequencies device IC9 and the second bandpass filter IC8 respectively, for controlling the working condition of radio-frequency antenna radiating circuit, example
The signal after filtered signal and sum of fundamental frequencies is such as transmitted or is not transmitted to transmitting antenna ANT3；Transmitting antenna switch IC7's is another
One end is connected with transmitting antenna ANT3, and the signal that will launch, which is transmitted to transmitting antenna ANT3, to be launched.
In addition, the system also includes being used for the radiator for radiating to radio frequency reception antenna circuit and radio frequency transmitter circuitry
(being not drawn into figure), the radiator can be gilled radiator or liquid cooling heat radiator.
The preferred embodiment of the present invention, transmitting antenna switch is within the cycle of each carrier aggregation by multiple carrier frequency
Multiple asynchronously or synchronously physical frames to reception antenna switch send radio broadcasting signal.Further, the carrier wave of carrier aggregation
For the carrier wave of discrete frequency bands.Wherein, a carrier aggregation cycle refers to the time for completing primary carrier polymerization, carrier aggregation cycle
Indicated by physical layer signaling.
The preferred embodiment of the present invention, reception antenna switch are connect using single broad band tuner or multiple arrowband tuners
Receive the radio broadcasting signal on multiple physical frames.
Due to the appearance of present antenna adjustment technology so that the space that antenna needs is less and less, therefore in the present invention
Space required for double antenna has no longer been technical bottleneck., can be in radio frequency as the Synchronization Control of up-downgoing data transfer
It is controlled in antenna receiving circuit and radio-frequency antenna radiating circuit.The present invention uses the relatively simple wave filter of technology, divides
Device IC6 and sum of fundamental frequencies device IC9 replaces the multiplexer of technical sophistication so that the realization of multi-transceiver technology becomes simple, and reduces
The data interference of upper and lower row of channels, improve the transmitting-receiving performance of data.
Preferred embodiments of the present invention are the foregoing is only, not thereby limit embodiments of the present invention and protection model
Enclose, to those skilled in the art, should can appreciate that and all be made with description of the invention and diagramatic content
Scheme obtained by equivalent substitution and obvious change, should be included in protection scope of the present invention.
Claims (10)
- A kind of 1. radio frequency topological system for LTE-FDD carrier aggregations, it is characterised in that including radio-frequency antenna receiving circuit and Radio-frequency antenna radiating circuit, wherein：The radio-frequency antenna receiving circuit is used to receive down going channel data, including：Reception antenna, receive the signal in default band limits；Reception antenna switchs, and is connected with the reception antenna, for controlling the working condition of the radio-frequency antenna receiving circuit；First bandpass filter, switch and connect with the reception antenna, for the letter sended over to reception antenna switch Number it is filtered, and is exported；Frequency divider, switch and connect with the reception antenna, the reception antenna is switched into the signal frequency split sent into different frequency Signal, and exported；The radio-frequency antenna radiating circuit is used to send data feedback channel data, including：Sum of fundamental frequencies device, for the multiple signals for needing to launch to be carried out into sum of fundamental frequencies；Second bandpass filter, for being filtered to up passband data；Transmitting antenna switchs, and connects the sum of fundamental frequencies device and the second bandpass filter respectively, for controlling the radio-frequency antenna to launch The working condition of circuit；Transmitting antenna, the transmitting antenna switch is connected, sends the signal through transmitting antenna switch transmission.
- 2. the radio frequency topological system according to claim 1 for LTE-FDD carrier aggregations, it is characterised in that also include Connect the first reception signal end of first bandpass filter, for by through first bandpass filter processing after signal Transmit to the first reception signal end.
- 3. the radio frequency topological system according to claim 1 for LTE-FDD carrier aggregations, it is characterised in that also include Multiple fractional frequency signal ends of the frequency divider are connected, for the signal after frequency divider frequency dividing to be exported to each point respectively Frequency signal end.
- 4. the radio frequency topological system according to claim 1 for LTE-FDD carrier aggregations, it is characterised in that also include Connect second bandpass filter first sends signal end, for the uplink signal transmissions that will send to second band Bandpass filter is filtered.
- 5. the radio frequency topological system according to claim 1 for LTE-FDD carrier aggregations, it is characterised in that also include Connect multiple sum of fundamental frequencies signal ends of the sum of fundamental frequencies device, for will sum of fundamental frequencies each sum of fundamental frequencies signal transmit to the sum of fundamental frequencies device carry out Sum of fundamental frequencies.
- 6. the radio frequency topological system according to claim 1 for LTE-FDD carrier aggregations, it is characterised in that also include Radiator, for being radiated to the radio frequency reception antenna circuit and radio frequency transmitter circuitry.
- 7. the radio frequency topological system according to claim 6 for LTE-FDD carrier aggregations, it is characterised in that described to dissipate Hot device is gilled radiator or liquid cooling heat radiator.
- 8. the radio frequency topological system according to claim 1 for LTE-FDD carrier aggregations, it is characterised in that the hair Duplexer is penetrated to connect to described by multiple asynchronously or synchronously physical frames on multiple carrier frequency within the cycle of each carrier aggregation Receive duplexer and send radio broadcasting signal.
- 9. the radio frequency topological system according to claim 1 for LTE-FDD carrier aggregations, it is characterised in that described to connect Duplexer is received using the radio broadcasting signal on single broad band tuner or the multiple physical frames of multiple arrowband tuners reception.
- 10. the radio frequency topological system according to claim 8 for LTE-FDD carrier aggregations, it is characterised in that the load The carrier wave of ripple polymerization is the carrier wave of discrete frequency bands.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711131136.6A CN107888208B (en) | 2017-11-15 | 2017-11-15 | Radio frequency topology system for LTE-FDD carrier aggregation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711131136.6A CN107888208B (en) | 2017-11-15 | 2017-11-15 | Radio frequency topology system for LTE-FDD carrier aggregation |
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| Publication Number | Publication Date |
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| CN107888208A true CN107888208A (en) | 2018-04-06 |
| CN107888208B CN107888208B (en) | 2021-09-10 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201711131136.6A Active CN107888208B (en) | 2017-11-15 | 2017-11-15 | Radio frequency topology system for LTE-FDD carrier aggregation |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110504984A (en) * | 2019-09-02 | 2019-11-26 | 联想(北京)有限公司 | A kind of electronic equipment |
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| CN107888208B (en) | 2021-09-10 |
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