CN107070482A - The power amplification system of full operator full system type pictorial covering - Google Patents
The power amplification system of full operator full system type pictorial covering Download PDFInfo
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- CN107070482A CN107070482A CN201710072263.7A CN201710072263A CN107070482A CN 107070482 A CN107070482 A CN 107070482A CN 201710072263 A CN201710072263 A CN 201710072263A CN 107070482 A CN107070482 A CN 107070482A
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- 230000003321 amplification Effects 0.000 title claims abstract description 67
- 238000003199 nucleic acid amplification method Methods 0.000 title claims abstract description 67
- 229910001218 Gallium arsenide Inorganic materials 0.000 claims description 3
- 238000004891 communication Methods 0.000 abstract description 9
- 238000002955 isolation Methods 0.000 description 4
- 230000015572 biosynthetic process Effects 0.000 description 2
- 238000001914 filtration Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000003786 synthesis reaction Methods 0.000 description 2
- 101100440934 Candida albicans (strain SC5314 / ATCC MYA-2876) CPH1 gene Proteins 0.000 description 1
- 101100273252 Candida parapsilosis SAPP1 gene Proteins 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 230000002452 interceptive effect Effects 0.000 description 1
- 230000006855 networking Effects 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Classifications
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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
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/14—Relay systems
- H04B7/15—Active relay systems
- H04B7/155—Ground-based stations
- H04B7/15528—Control of operation parameters of a relay station to exploit the physical medium
- H04B7/15535—Control of relay amplifier gain
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- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Transmitters (AREA)
- Amplifiers (AREA)
Abstract
The invention provides a kind of power amplification system for supporting full operator's full system type pictorial signal to cover, belong to communication technical field.It solves the problem of prior art has poor for applicability.The power amplification system of the full operator's full system type pictorial signal covering of this support includes receiving unit and transmitter unit, wherein receiving unit is made up of multiplexer (POI), low-noise amplifier (LNA), variable gain amplifier (VGA), wave filter (BPF), power splitter (Divider), and transmitter unit is made up of power splitter, wave filter, variable gain amplifier, driving amplifier (DPA), power amplifier (HPA), isolator (ISO), circulator (CIR)；Transmitter unit uses back-off mode, and power amplifier is operated in the biasing of B classes, can so improve the linear and efficiency performance of power amplifier, realizes the amplification of full operator's full system type pictorial signal simultaneously in a DAS.The power amplification system applicability of the full operator's full system type pictorial signal covering of this support is high.
Description
Technical field
The invention belongs to moving communicating field, it is related to a kind of power amplification system of full operator's full system type pictorial covering.
Background technology
China there is currently a variety of channel radios such as GSM, CDMA2000, TD-SCDMA, WCDMA, TD-LTE, LTE FDD
Communication network standard, each wireless communication system be operated in respectively 800MHz, 900MHz, 1800MHz, 1900MHz, 2100MHz,
On multiple public's wireless communication frequency bands such as 2300MHz.With development of new techniques, wireless network application environment will be more complicated, and one
Individual operator possesses multiple standards, many band frequencies, and the situation that area of coverage multisystem, Multi net voting, a full frequency band coexist also will be more
Come more.
The indoor distributed system of current operator (movement, UNICOM, telecommunications) is (hereinafter referred to as：DAS) individually centralized procurement, is only supported
Single operator, operation cost is high.In order to avoid the waste invested in networking, it is reasonable that operator 2G, 3G and 4G, which are shared,
Selection.So, for operator, in the urgent need to a kind of multimode multi-frequency section DAS power amplifiers, while realizing the multiple frequencies of multiple types
The amplification of segment signal, reduces the various costs brought of repeated construction, not only economical and efficient but also can take into account environmental protection.
The content of the invention
The purpose of the present invention is that there is provided a kind of high full operator of applicability is complete in view of the above-mentioned problems existing in the prior art
The power amplification system of standard covering.
The purpose of the present invention is realized by following technical proposal：
A kind of power amplification system for supporting full operator's full system type pictorial signal to cover, it is characterised in that the system includes receiving single
Member and transmitter unit, wherein receiving unit by multiplexer (POI), low-noise amplifier (LNA), variable gain amplifier (VGA),
Wave filter (BPF), power splitter (Divider) composition, transmitter unit are put by power splitter, wave filter, variable gain amplifier, driving
Big device (DPA), power amplifier (HPA), isolator (ISO), circulator (CIR) composition；Transmitter unit uses back-off side
Formula, power amplifier is operated in the biasing of B classes, can so improve the linear and efficiency performance of power amplifier, simultaneously real in a DAS
The amplification of Xian Quan operators full system type pictorial signal.
In the power amplification system of the full operator's full system type pictorial signal covering of above-mentioned support, described multiplexer will radio frequency all the way
Signal is divided into the radiofrequency signal of multiple frequency ranges or is radiofrequency signal all the way by the radiofrequency signal combining of multiple frequency ranges.
In the power amplification system of the above-mentioned full operator's full system type pictorial signal covering of support, described low-noise amplifier will connect
The low level signal amplification received.
In the power amplification system of the above-mentioned full operator's full system type pictorial signal covering of support, described variable gain amplifier will
RF small signals amplify, moreover it is possible to the gain of control signal amplification.
In the power amplification system of the above-mentioned full operator's full system type pictorial signal covering of support, described wave filter is by dielectric filter
Device is realized, filters out the interference outside frequency range.
In the power amplification system of the above-mentioned full operator's full system type pictorial signal covering of support, the power splitter is 3-dB power point
Orchestration, phase is consistent.
In the power amplification system of the above-mentioned full operator's full system type pictorial signal covering of support, the driving amplifier passes through GaAs
Amplifier tube is realized, realizes power amplification.
In the power amplification system of the above-mentioned full operator's full system type pictorial signal covering of support, described power amplifier passes through
LDMOS amplifier tubes are realized, and are biased in B class magnifying states.
In the power amplification system of the above-mentioned full operator's full system type pictorial signal covering of support, described isolator can prevent power
Amplifier output signal reflection causes power amplifier tube to damage.
In the power amplification system of the above-mentioned full operator's full system type pictorial signal covering of support, described circulator is unidirectional loop
The device of transmission.
In the power amplification system of the above-mentioned full operator's full system type pictorial signal covering of support, the receiving unit puts small-signal
Greatly.
In the power amplification system of the above-mentioned full operator's full system type pictorial signal covering of support, described transmitter unit puts power
Greatly.
In the power amplification system of the above-mentioned full operator's full system type pictorial signal covering of support, POI is selected in described receiving unit
The signal that frequency antenna opening is received, amplifies via receives link, and what is signal all the way by power splitter for the signal of amplification.
In the power amplification system of the above-mentioned full operator's full system type pictorial signal covering of support, described transmitter unit is by power splitter
The signal of power distribution, power amplification is realized by transmitting chain, and multiple signals synthesis signal all the way is realized via POI.
Compared with prior art, the power amplification system of the full operator's full system type pictorial signal covering of this support realizes operator's full system type pictorial
The amplification of signal, effectively solving following three technical problem is：1. the interference of the multi-standard signal of same channels；2. passage
Between interfere；3. the amplification of the multiple frequency band signals of whole communication standards.
Brief description of the drawings
Fig. 1 is the schematic diagram of the power amplification system of this full operator's full system type pictorial covering.
Embodiment
As shown in figure 1, the power amplification system of the full operator's full system type pictorial signal covering of this support includes receiving unit and transmitting is single
Member, wherein receiving unit are by multiplexer (POI), low-noise amplifier (LNA), variable gain amplifier (VGA), wave filter
(BPF), power splitter (Divider) is constituted, and transmitter unit is by power splitter, wave filter, variable gain amplifier, driving amplifier
(DPA), power amplifier (HPA), isolator (ISO), circulator (CIR) composition；Transmitter unit uses back-off mode, work(
Rate amplifier is operated in the biasing of B classes, can so improve the linear and efficiency performance of power amplifier, is realized simultaneously in a DAS complete
The amplification of operator's full system type pictorial signal.
Radiofrequency signal all the way is divided into the radiofrequency signal of multiple frequency ranges or believes the radio frequency of multiple frequency ranges by described multiplexer
Number combining is radiofrequency signal all the way.
Described low-noise amplifier is by the low level signal amplification received.
Described variable gain amplifier amplifies RF small signals, moreover it is possible to the gain of control signal amplification.
Described wave filter is realized by dielectric filter, filters out the interference outside frequency range.
The power splitter is 3-dB power dividers, and phase is consistent.
The driving amplifier is realized by GaAs amplifier tubes, realizes power amplification.
Described power amplifier is realized by LDMOS amplifier tubes, and is biased in B class magnifying states.
Described isolator can prevent power amplifier output signal reflection from causing power amplifier tube to damage.
Described circulator is the device that unidirectional loop is transmitted.
The receiving unit is by low level signal amplification.
Described transmitter unit is by power amplification.
The signal that POI frequency-selectings antenna opening is received in described receiving unit, amplifies via receives link, the signal of amplification
By power splitter, what is signal all the way.
Described transmitter unit realizes power amplification by the signal of power splitter power distribution by transmitting chain, via POI
Realize multiple signals synthesis signal all the way.
Specifically, the present invention is a kind of power amplification system of full operator's full system type pictorial covering.Including primary antenna (MAIN
ANT), multiplexer (POI), variable gain amplifier (VGA), bandpass filter (BPF), driving amplifier (DPA), power amplification
Device (HPA), isolator (ISO), circulator (CIR), low-noise amplifier (LNA), power splitter (Divider), mimo antenna
(MIMO ANT).Using the frequency selectivity of the branch of power splitter, combining and multiplexer, putting for operator's DAS full frequency bands is realized
Greatly.
The signal that mimo antenna is received is selected by POI frequencies, separates the upward signal of four frequency ranges, upward signal difference
Power amplification is realized by LNA, VGA, BPF is filtered out to the out of band signal of the upward signal after amplification respectively, and power splitter will wherein
Three road upward signal combinings are to RX2；The road downstream signals of Divider Fen Wei tri-, descending letter are passed through by the TX2 full system type pictorial information sources accessed
Realize that filtering, VGA realize that gain control, DPA and HPA realize power amplification by BPF number respectively, the tunnel of POI combinings three is descending defeated
Go out signal, radiated by mimo antenna.The signal that MAIN antennas are received is selected by POI frequencies, separates the up of three frequency ranges
Signal, realizes that power amplification and gain are controlled, BPF is filtered to the upward signal after amplification respectively, MIMO respectively through LNA, VGA
Upward signal all the way and MAIN three road upward signals pass through Divider combinings to RX1；The full communication standard accessed by TX1
Signal is realized by BPF by the road downstream signals of Didider Fen Wei tetra-, per road downstream signal and filtered, and filters out out-of-band interference signal,
VGA, DPA, HPA realize power amplification, and the descending output signal of multiplexer combining passes through MAIN aerial radiations.
Up input signal is received by MAIN antennas and mimo antenna, and the selection of POI frequencies is four communications bands：820-
915MHz, 1710-1785MHz, 1920-1980MHz, 2320-2370MHz, 820-915MHz support telecommunications CDMA800, movement/
UNICOM GSM900,1710-1785MHz support mobile GSM1800, UNICOM GSM1800/LTE FDD1.8G, telecommunications LTE
FDD1.8G, 1920-1980MHz support telecommunications LTE FDD2.1G, UNICOM WCDMA2100/LTE FDD2.1G, 2320-
2370MHz supports mobile TD-LTE (E frequency ranges).
Four uplink communication frequency band signals pass through up-link respectively；LNA and VGA realize low level signal amplification and gain control
System, BPF realizes each frequency range filtering, and up filtered signal is RX1 and RX2, the interference of upward signal by power splitter combining
Filtered out by dielectric duplexer and BPF.
Descending input signal TX1 and TX2 realizes downstream signal branch by power splitter, is divided into four down going channels, passage
Frequency range is：865-960MHz, 1805-1880MHz, 2110-2170MHz, 2320-2370MHz, 865-960MHz supports movement/
UNICOM GSM900, telecommunications CDMA800,1805-1880MHz support mobile GSM1800, UNICOM GSM1800/LTE FDD1.8G, electricity
Believe that LTE FDD1.8G, 2110-2170MHz support telecommunications LTE FDD2.1G, UNICOM WCDMA2100/LTE FDD2.1G, 2320-
2370MHz supports mobile TD-LTE (E frequency ranges).
Four road downstream signals realize that BPF is filtered by downlink respectively, VGA gain control, DPA drive amplifications, HPA work(
Rate is amplified；Downstream signal output is radiated by POI combinings through MAIN, mimo antenna.
For multi-channel system, the isolation between row of channels determines the quality of signal up and down, traditional DAS products,
Number of channels is few, in order to improve the isolation between passage, and the method generally used is to use cavity multiplexer, with sacrificial body
Product, the mode of cost suppress to exchange high isolation and height for, to meet communication standards.The present invention is dropped by reducing link gain
Low bottom is made an uproar, and medium multiplexer and structual shield improve isolation, reduce equipment cost and volume.
The interference of the multi-standard signal of same channels is divided into up-link and downlink, and up-link passes through medium multiplexing
Device and wave filter filter out out-of-band interference, with interior multi-standard signal interfere with each other by improve gain flatness, intermodulation, ACPR,
ACS etc. is realized.Downlink filters out out-of-band interference by wave filter and medium multiplexer, with interfering for interior multi-standard signal
Realized by improving link RF index.
Claims (10)
1. a kind of power amplification system for supporting full operator's full system type pictorial signal to cover, it is characterised in that the system includes receiving unit
And transmitter unit, wherein receiving unit is by multiplexer (POI), low-noise amplifier (LNA), variable gain amplifier (VGA), filter
Ripple device (BPF), power splitter (Divider) composition, transmitter unit is by power splitter, wave filter, variable gain amplifier, drive amplification
Device (DPA), power amplifier (HPA), isolator (ISO), circulator (CIR) composition；Transmitter unit uses back-off mode,
Power amplifier is operated in the biasing of B classes, can so improve the linear and efficiency performance of power amplifier, is realized simultaneously in a DAS
The amplification of full operator full system type pictorial signal.
2. the power amplification system according to claim 1 for supporting full operator's full system type pictorial signal to cover, it is characterised in that described
Multiplexer radiofrequency signal all the way is divided into the radiofrequency signal of multiple frequency ranges or by the radiofrequency signal combining of multiple frequency ranges for all the way
Radiofrequency signal.
3. the power amplification system according to claim 1 for supporting full operator's full system type pictorial signal to cover, it is characterised in that described
Low-noise amplifier by the low level signal amplification received.
4. the power amplification system according to claim 1 for supporting full operator's full system type pictorial signal to cover, it is characterised in that described
Variable gain amplifier RF small signals are amplified, moreover it is possible to control signal amplification gain.
5. the power amplification system according to claim 1 for supporting full operator's full system type pictorial signal to cover, it is characterised in that described
Wave filter realized by dielectric filter, filter out the interference outside frequency range.
6. the power amplification system according to claim 1 for supporting full operator's full system type pictorial signal to cover, it is characterised in that described
Power splitter is 3-dB power dividers, and phase is consistent.
7. the power amplification system according to claim 1 for supporting full operator's full system type pictorial signal to cover, it is characterised in that described
Driving amplifier is realized by GaAs amplifier tubes, realizes power amplification.
8. the power amplification system according to claim 1 for supporting full operator's full system type pictorial signal to cover, it is characterised in that described
Power amplifier realized by LDMOS amplifier tubes, and be biased in B class magnifying states.
9. the power amplification system according to claim 1 for supporting full operator's full system type pictorial signal to cover, it is characterised in that described
Isolator can prevent power amplifier output signal reflection cause power amplifier tube to damage.
10. the power amplification system according to claim 1 for supporting full operator's full system type pictorial signal to cover, it is characterised in that institute
The circulator stated is the device that unidirectional loop is transmitted.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710072263.7A CN107070482A (en) | 2017-02-09 | 2017-02-09 | The power amplification system of full operator full system type pictorial covering |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710072263.7A CN107070482A (en) | 2017-02-09 | 2017-02-09 | The power amplification system of full operator full system type pictorial covering |
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| Publication Number | Publication Date |
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| CN107070482A true CN107070482A (en) | 2017-08-18 |
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ID=59598150
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|---|---|---|---|
| CN201710072263.7A Pending CN107070482A (en) | 2017-02-09 | 2017-02-09 | The power amplification system of full operator full system type pictorial covering |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107565988A (en) * | 2017-09-27 | 2018-01-09 | 无锡神探电子科技有限公司 | A kind of design of 4G full frequency bands power amplifier |
| CN107612576A (en) * | 2017-09-27 | 2018-01-19 | 无锡神探电子科技有限公司 | A kind of full frequency band base station radio-frequency design for supporting software configurable |
| CN109194413A (en) * | 2018-08-28 | 2019-01-11 | 北京遥感设备研究所 | A kind of two-band four-way answering machine microwave link test device |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20070287400A1 (en) * | 2006-03-30 | 2007-12-13 | Samsung Electronics Co., Ltd. | Gain control method and apparatus in receiver of wireless communication system |
| CN202269021U (en) * | 2011-10-19 | 2012-06-06 | 上海欣民通信技术有限公司 | Multi-system access platform for airport communication |
| CN103401599A (en) * | 2013-07-18 | 2013-11-20 | 三维通信股份有限公司 | Novel POI system with MIMO (multiple input multiple output) function by aiming at multi-frequency-band input |
| CN105338666A (en) * | 2015-11-20 | 2016-02-17 | 天津光电通信技术有限公司 | Portable multi-band base station equipment |
| CN207283535U (en) * | 2017-02-09 | 2018-04-27 | 杭州柏乐尼通信设备有限公司 | The power amplification system of full operator full system type pictorial covering |
-
2017
- 2017-02-09 CN CN201710072263.7A patent/CN107070482A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20070287400A1 (en) * | 2006-03-30 | 2007-12-13 | Samsung Electronics Co., Ltd. | Gain control method and apparatus in receiver of wireless communication system |
| CN202269021U (en) * | 2011-10-19 | 2012-06-06 | 上海欣民通信技术有限公司 | Multi-system access platform for airport communication |
| CN103401599A (en) * | 2013-07-18 | 2013-11-20 | 三维通信股份有限公司 | Novel POI system with MIMO (multiple input multiple output) function by aiming at multi-frequency-band input |
| CN105338666A (en) * | 2015-11-20 | 2016-02-17 | 天津光电通信技术有限公司 | Portable multi-band base station equipment |
| CN207283535U (en) * | 2017-02-09 | 2018-04-27 | 杭州柏乐尼通信设备有限公司 | The power amplification system of full operator full system type pictorial covering |
Non-Patent Citations (2)
| Title |
|---|
| 刘素清: "共享式室内分布系统简析", 电信快报, vol. 508, no. 10, pages 19 - 20 * |
| 李艳军: "多运营商室内分布系统共建共享研究", 电信快报, vol. 546, no. 12, pages 29 - 33 * |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107565988A (en) * | 2017-09-27 | 2018-01-09 | 无锡神探电子科技有限公司 | A kind of design of 4G full frequency bands power amplifier |
| CN107612576A (en) * | 2017-09-27 | 2018-01-19 | 无锡神探电子科技有限公司 | A kind of full frequency band base station radio-frequency design for supporting software configurable |
| CN107565988B (en) * | 2017-09-27 | 2020-05-05 | 无锡神探电子科技有限公司 | 4G full-band power amplifier equipment |
| CN109194413A (en) * | 2018-08-28 | 2019-01-11 | 北京遥感设备研究所 | A kind of two-band four-way answering machine microwave link test device |
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Effective date of registration: 20191206 Address after: 310000 5th floor, building 1, No. 33, Xincheng Road, Puyan street, Binjiang District, Hangzhou City, Zhejiang Province Applicant after: Hangzhou building Communication Co.,Ltd. Address before: 310000 room 4, building 20, No. 157 Longtan Road, Hangzhou District, Yuhang, Zhejiang Applicant before: ZHEJIANG BOLENI ELECTRONIC CO.,LTD. |
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Application publication date: 20170818 |