CN108736907A - A kind of radio frequency transmitter circuitry - Google Patents
A kind of radio frequency transmitter circuitry Download PDFInfo
- Publication number
- CN108736907A CN108736907A CN201810639280.9A CN201810639280A CN108736907A CN 108736907 A CN108736907 A CN 108736907A CN 201810639280 A CN201810639280 A CN 201810639280A CN 108736907 A CN108736907 A CN 108736907A
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- China
- Prior art keywords
- radio frequency
- power
- signal
- transmitter circuitry
- antenna
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Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
- H04B1/02—Transmitters
- H04B1/04—Circuits
-
- 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
- H04B1/02—Transmitters
- H04B1/04—Circuits
- H04B1/0458—Arrangements for matching and coupling between power amplifier and antenna or between amplifying stages
-
- 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
- H04B1/02—Transmitters
- H04B1/04—Circuits
- H04B1/0483—Transmitters with multiple parallel paths
-
- 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
- H04B1/02—Transmitters
- H04B1/04—Circuits
- H04B2001/0408—Circuits with power amplifiers
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- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Transmitters (AREA)
Abstract
The present invention proposes a kind of radio frequency transmitter circuitry, by the way that multiple power amplifiers, mutiple antennas switch, the first power divider and the second power divider is arranged, it can get the output power of the output power bigger than single power amplifier, single transmitting link is become into a plurality of transmitting link simultaneously, when emission power amplifier number in parallel is more, the influence of the failure of fractional transmission power amplifier to radio frequency transmitter circuitry is with regard to smaller；When duplexer in parallel is more and more, the covering of radio frequency transmissions is wider；By the way that bandpass filter, low-pass filter is arranged, band stray is effectively reduced, the reception sensitivity of radio frequency transmitter circuitry is improved；By the way that antenna tuner is arranged, make impedance matching between radio frequency sending set and antenna, to make antenna have maximum radiant power in any frequency.
Description
Technical field
The present invention relates to the lift-off technology field of cable fault test more particularly to a kind of radio frequency transmitter circuitries.
Background technology
With the development in China, cable run becomes more and more important safely, and therefore, cable fault test is extremely important.Existing skill
In art, cable fault test method is to send radiofrequency signal using radio frequency sending set to be sent directly in failure cable, then by connecing
Receipts machine receives signal analysis fault point.Since the signal pathway for being input to antenna from power amplifier is more single, radio-frequency transmissions system
System is easy to fail because of the link failure of part；Meanwhile the power consumption of general radiofrequency launcher is high, radio frequency reception end it is sensitive
Spend it is low, it is difficult to detect radio frequency sending set transmitting signal, greatly reduce the efficiency of RF emission system.So needing at present
Work out it is a kind of to be caused thrashing to be influenced by local link damage smaller and low in energy consumption, radiofrequency signal transmitting-receiving is more sensitively penetrated
Take place frequently transmit-receive radio road.
Invention content
In view of this, the present invention propose it is a kind of by local link damage cause thrashing influenced it is smaller and low in energy consumption,
The radio frequency transmitter circuitry of high sensitivity.
The technical proposal of the invention is realized in this way：The present invention provides a kind of radio frequency transmitter circuitries, including radio frequency to send out
Penetrate machine, multiple power amplifiers, filter, directional coupler, antenna, the first power divider, the second power divider, power
Synthesizer, antenna tuner and mutiple antennas switch；
Filter includes bandpass filter and low-pass filter；
Radio frequency sending set exports radiofrequency signal, and the input terminal of bandpass filter receives radiofrequency signal, output end and first
The input terminal of power divider is electrically connected；
Multiple power amplifiers are parallel with one another, and the input terminal of power amplifier and the output end of the first power divider are electrical
The input terminal of connection, output end and low-pass filter is electrically connected；
The input terminal of power combiner and the output end of low-pass filter are electrically connected, output end and the second power distribution
The input terminal of device is electrically connected；
Mutiple antennas switch is parallel with one another, and the first connecting pin is electrically connected with the output end of the second power divider,
Its second connection end is electrically connected with the input terminal of antenna tuner；The output end of antenna tuner is electrically connected with antenna.
On the basis of above technical scheme, it is preferred that bandpass filter passes the signal within the scope of radio frequency signal frequency
The defeated past, and block the signal other than radio frequency signal frequency range.
On the basis of above technical scheme, it is preferred that radiofrequency signal is divided into multichannel power phase by the first power divider
Deng or unequal output signal, then be transferred to multipath output signals are corresponding respectively the multiple power amplifier and put
Greatly, a plurality of transmitting link is formed.
On the basis of above technical scheme, it is preferred that multiple power amplifiers simultaneously amplify multiple input signal.
On the basis of above technical scheme, it is preferred that low-pass filter will be less than in power amplifier output signal to be cut
Only the signal transmission of frequency gives the second power divider.
On the basis of above technical scheme, it is preferred that power combiner is by the amplified output of multiple power amplifiers
Signal synthesizes signal all the way.
On the basis of above technical scheme, it is preferred that the second power divider power combiner is synthesized after signal
It is divided into the output signal equal with the quantity of duplexer.
On the basis of above technical scheme, it is preferred that antenna tuner can make between radio frequency sending set and antenna
Impedance matching.
The present invention's has the advantages that compared with the existing technology：
(1) by the way that multiple power amplifiers, mutiple antennas switch, the first power divider and the second power distribution is arranged
Device, can get the output power of the output power bigger than single power amplifier, while single transmitting link is become a plurality of
Emit link, when emission power amplifier number in parallel is more, the failure of fractional transmission power amplifier is to radio-frequency transmissions
The influence of circuit is with regard to smaller；When duplexer in parallel is more and more, the covering of radio frequency transmissions is wider；
(2) by the way that bandpass filter, low-pass filter is arranged, band stray is effectively reduced, radio-frequency transmissions electricity is improved
The reception sensitivity on road；
(3) by the way that antenna tuner is arranged, make impedance matching between radio frequency sending set and antenna, to make antenna any
There is maximum radiant power in frequency；
Description of the drawings
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technology description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
Some embodiments of invention for those of ordinary skill in the art without creative efforts, can be with
Obtain other attached drawings according to these attached drawings.
Fig. 1 is a kind of structural schematic diagram of radio frequency transmitter circuitry of the present invention.
Specific implementation mode
Below in conjunction with the attached drawing in embodiment of the present invention, the technical solution in embodiment of the present invention is carried out clear
Chu is fully described by, it is clear that described embodiment is only some embodiments of the invention, rather than whole realities
Apply mode.Based on the embodiment in the present invention, those of ordinary skill in the art institute without making creative work
The every other embodiment obtained, shall fall within the protection scope of the present invention.
As shown in Figure 1, a kind of radio frequency transmitter circuitry of the present invention comprising radio frequency sending set, bandpass filter, the first power
Distributor, multiple power amplifiers, low-pass filter, power combiner, the second power divider, mutiple antennas switch, orientation
Coupler, antenna tuner and antenna.
Bandpass filter goes over the signal transmission within the scope of radio frequency signal frequency, and blocks radio frequency signal frequency range
Signal in addition achievees the purpose that selectively to transmit, reduces the interference of radiofrequency signal.The input terminal of bandpass filter receives radio frequency
The input terminal of the radiofrequency signal of transmitter output, output end and the first power divider is electrically connected.
Radiofrequency signal is divided into the equal or unequal output signal of multichannel power by the first power divider, then by multichannel
Output signal is corresponding respectively to be transferred to the multiple power amplifier and is amplified, and a plurality of transmitting link is formed.First power point
The output end of the input terminal of orchestration and bandpass filter is electrically connected, the output end input terminal with multiple power amplifiers respectively
It is electrically connected.
The signal of first power divider distribution is amplified, be can get than single power amplifier by multiple power amplifiers
The output power of output power bigger, while single transmitting link is become into a plurality of transmitting link, when transmission power in parallel
When amplifier number is more, the influence of the failure of fractional transmission power amplifier to radio frequency transmitter circuitry is with regard to smaller.Multiple power
The input terminal of amplifier with the output end of the first power divider be electrically connected, output end with the input of low-pass filter
End is electrically connected.
Low-pass filter will be less than the signal transmission of cutoff frequency to the second power distribution in power amplifier output signal
Device.The input terminal of low-pass filter and the output end of multiple power amplifiers are electrically connected, output end and power combiner
Input terminal be electrically connected.
The amplified output signal of multiple power amplifiers is synthesized signal all the way, the signal after synthesis by power combiner
Power is far longer than the output power of single transmitting link.The input terminal of power combiner and the output end electricity of low-pass filter
Property connection, the input terminal electric connection of output end and the second power divider.
Second power divider, the signal after power combiner is synthesized are divided into the output equal with the quantity of duplexer
Signal, and then adjust radiofrequency signal coverage area.The input terminal of second power divider and the output end of power combiner are electrical
Connection, output end are electrically connected with the first connecting pin with mutiple antennas switch.
Antenna tuner makes impedance matching between radio frequency sending set and antenna, to make antenna have most in any frequency
Big radiant power.The input terminal of antenna tuner and the output end of directional coupler are electrically connected, output end and antenna electric
Property connection.
The technical principle of radio frequency transmitter circuitry of the present invention is：Switched by the multiple power amplifiers of setting, mutiple antennas,
First power divider, the second power divider increase the quantity of transmitting link and expand the range of radiofrequency signal covering, effectively
The power amplifier that reduces fail influence to radiofrequency launcher；Bandpass filter, low-pass filter and antenna tuning are set
Device is effectively reduced band stray, improves the reception sensitivity of radio frequency transmitter circuitry；Antenna tuner is set, radio-frequency transmissions are made
Impedance matching between machine and antenna makes to make antenna have maximum radiant power that antenna tuner is arranged in any frequency
Impedance matching between radio frequency sending set and antenna, to make antenna have maximum radiant power in any frequency.
The foregoing is merely the better embodiments of the present invention, are not intended to limit the invention, all the present invention's
Within spirit and principle, any modification, equivalent replacement, improvement and so on should all be included in the protection scope of the present invention.
Claims (8)
1. a kind of radio frequency transmitter circuitry comprising radio frequency sending set, multiple power amplifiers and antenna, it is characterised in that：Also wrap
Include filter, the first power divider, the second power divider, power combiner, antenna tuner and mutiple antennas switch；
The filter includes bandpass filter and low-pass filter；
The radio frequency sending set exports radiofrequency signal, and the input terminal of the bandpass filter receives radiofrequency signal, output end with
The input terminal of first power divider is electrically connected；
The multiple power amplifier is parallel with one another, the input terminal of the multiple power amplifier with first power distribution
The output end of device is electrically connected, and output end is electrically connected with the input terminal of the low-pass filter；
The input terminal of the power combiner and the output end of the low-pass filter are electrically connected, output end and described second
The input terminal of power divider is electrically connected；
The multiple duplexer is parallel with one another, and output end of first connecting pin with second power divider electrically connects
It connects, second connection end is electrically connected with the input terminal of the antenna tuner；
The output end of the antenna tuner is electrically connected with the antenna.
2. a kind of radio frequency transmitter circuitry as described in claim 1, it is characterised in that：The bandpass filter by radiofrequency signal frequency
Signal transmission within the scope of rate is gone over, and blocks the signal other than radio frequency signal frequency range.
3. a kind of radio frequency transmitter circuitry as described in claim 1, it is characterised in that：First power divider believes radio frequency
Number it is divided into the equal or unequal output signal of multichannel power, then correspondence is transferred to the multiple work(respectively by multipath output signals
Rate amplifier is amplified, and forms a plurality of transmitting link.
4. a kind of radio frequency transmitter circuitry as described in claim 1, it is characterised in that：The multiple power amplifier is simultaneously to more
A input signal amplification.
5. a kind of radio frequency transmitter circuitry as described in claim 1, it is characterised in that：The low-pass filter puts the power
Signal transmission in big device output signal less than cutoff frequency gives the second power divider.
6. a kind of radio frequency transmitter circuitry as described in claim 1, it is characterised in that：The power combiner is by the multiple work(
The amplified output signal of rate amplifier synthesizes signal all the way.
7. a kind of radio frequency transmitter circuitry as described in claim 1, it is characterised in that：Second power divider is by the work(
Signal after the synthesis of rate synthesizer is divided into the output signal equal with the quantity of the duplexer.
8. a kind of radio frequency transmitter circuitry as described in claim 1, it is characterised in that：The antenna tuner is by radio frequency sending set
Impedance matching between antenna.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810639280.9A CN108736907A (en) | 2018-06-20 | 2018-06-20 | A kind of radio frequency transmitter circuitry |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810639280.9A CN108736907A (en) | 2018-06-20 | 2018-06-20 | A kind of radio frequency transmitter circuitry |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108736907A true CN108736907A (en) | 2018-11-02 |
Family
ID=63930091
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810639280.9A Pending CN108736907A (en) | 2018-06-20 | 2018-06-20 | A kind of radio frequency transmitter circuitry |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108736907A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109714064A (en) * | 2018-12-27 | 2019-05-03 | 维沃移动通信有限公司 | Radio-frequency transmissions access control method and user terminal |
| WO2022257651A1 (en) * | 2021-06-09 | 2022-12-15 | Oppo广东移动通信有限公司 | Radio frequency transmission module, radio frequency system, and communication device |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203933607U (en) * | 2014-05-28 | 2014-11-05 | 上海斐讯数据通信技术有限公司 | A kind of radio-frequency transmissions circuit |
| CN104506216A (en) * | 2014-12-18 | 2015-04-08 | 陕西烽火实业有限公司 | Short-wave and ultra-short-wave pilot-frequency conversion communication system and method |
| CN206195820U (en) * | 2016-12-03 | 2017-05-24 | 河池学院 | Microwave transmission system |
-
2018
- 2018-06-20 CN CN201810639280.9A patent/CN108736907A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203933607U (en) * | 2014-05-28 | 2014-11-05 | 上海斐讯数据通信技术有限公司 | A kind of radio-frequency transmissions circuit |
| CN104506216A (en) * | 2014-12-18 | 2015-04-08 | 陕西烽火实业有限公司 | Short-wave and ultra-short-wave pilot-frequency conversion communication system and method |
| CN206195820U (en) * | 2016-12-03 | 2017-05-24 | 河池学院 | Microwave transmission system |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109714064A (en) * | 2018-12-27 | 2019-05-03 | 维沃移动通信有限公司 | Radio-frequency transmissions access control method and user terminal |
| WO2022257651A1 (en) * | 2021-06-09 | 2022-12-15 | Oppo广东移动通信有限公司 | Radio frequency transmission module, radio frequency system, and communication device |
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| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20181102 |
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| RJ01 | Rejection of invention patent application after publication |