CN206835089U - The active feeder gain compensation node of wideband and the active feeder compartment system of wideband - Google Patents
The active feeder gain compensation node of wideband and the active feeder compartment system of wideband Download PDFInfo
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- CN206835089U CN206835089U CN201720489125.4U CN201720489125U CN206835089U CN 206835089 U CN206835089 U CN 206835089U CN 201720489125 U CN201720489125 U CN 201720489125U CN 206835089 U CN206835089 U CN 206835089U
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- wideband
- feeder
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- gain compensation
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Abstract
The utility model belongs to field of wireless communications, and in particular to a kind of active feeder gain compensation node of wideband and the active feeder compartment system of wideband.The gain compensation node includes two radio frequency links of up-link and downlink, and feed circuit, termination power, antenna, signal amplifier and agc circuit are provided with each radio frequency link；The termination power, signal amplifier and agc circuit are series in radio frequency link, are connected respectively in the feed circuit access radio frequency link and with signal amplifier and agc circuit, the antenna is connected with termination power.Up-down bidirectional amplifier is included inside node device provided by the utility model, amplifier gain is used for the link load for offsetting next stage feeder, every one-level node device antenna opening transmission power can be made to be in optimal level scope, so as to improve terminal user's speech quality.Same signal source can save information source investment with cascading multiple stages node device.
Description
Technical field
The utility model belongs to field of wireless communications, and in particular to a kind of active feeder gain compensation node of wideband and wideband
Active feeder compartment system.
Background technology
With the fast development of mobile communication, mobile subscriber is skyrocketed through, and the covering to traffic density and movable signal will
Ask also constantly rising.But the development in city also also results in, and skyscraper is more and more, and these architectural scales are big, quality is good,
There is very strong shielding action to movable signal.Under the environment such as the low layer of building, market place builet below the ground, underground parking, move
Dynamic signal of communication is weak, mobile phone can not normal use, form the blind area and shadow region of mobile communication；In intermediate floor, due to coming
From the overlapping of different base station signal around, ping-pong, mobile phone frequent switching, or even call drop are produced, has had a strong impact on mobile phone
Normal use；In the high level of building, due to the height limitation by antenna for base station, can not normally cover, and mobile communication
Blind area.This just needs Virtual network operator using systems such as microcellulor, repeater and indoor distributions to solve the problems, such as the network coverage.
Indoor distributed system is supplement and the extension of macro base station and microcellulor, is the indispensable composition portion of mobile communication
Point, there is the shielding action for overcoming building to signal, fill up the blind area of signal in building, solve signal in building
The unequal effect of field strength distribution.Its principle is that the signal of base station is uniformly distributed into each angle indoors using indoor antenna-feedback system
Fall, so as to ensure that room area possesses preferable signal covering, more can comprehensively improve the speech quality in building, carry
High mobile terminal user's percent of call completed, the indoor mobile communication region of high quality is hewed out, share outdoor macro honeycomb traffic, expand net
Network capacity, the service level of mobile communications network is improved on the whole.
Existing indoor distributed system mainly include non-electrical source distributing mode of antenna and feeder, active distribution mode, distributing mode of optical fiber and
It is several to reveal cable distribution mode etc..
Non-electrical source distributing mode of antenna and feeder mainly by point/combiner, coupler, feeder line, antenna form, movable signal is passed through into nothing
Source device and feeder line transmit and are assigned to environment needed for interior.Which signal produces when being transmitted in feeder line and each passive device
Loss can not be compensated, it is necessary to which accurately link budget, system design is more complicated, and coverage is by information source output work
Rate has a great influence, also higher to the performance requirement of feeder line.
Active distribution mode is mainly made up of trunk amplifier, power splitter, coupler, feeder line, antenna.Such a mode needs
Trunk amplifier frequency range it is narrow, it is difficult to accomplish wideband, multisystem is compatible difficult；Existing network mobile communications network TDD/FDD is due to work
Operation mode, which differs, to be caused also while needs more money equipment.Device category is more so as to cause cost not reduce, and fault rate also compares
It is high.
Distributing mode of optical fiber is that macro base station or the direct-coupled signal of microcellulor are converted to optical signal, will be penetrated using optical fiber
Frequency signal is transferred to the far-end unit for being distributed in building regional, and opto-electronic conversion is carried out again in far-end unit, by amplification
Indoor each region is covered after device amplification.Such a mode is because more kinds of communication equipments of existing network 2G, 3G, 4G coexist, same meeting
It there are the multisystem compatibling problem in source distribution mode.In addition, remote equipment needs single power supply power supply, there can be power taking
The problems such as difficulty, security.
I.e. signal source by leaky cable transmission signal, passes through cable outer conductor to leakage cable distribution mode as its name suggests
A series of openings, produce surface current on outer conductor, so as to which electromagnetic field is formed on cross section at cable openings, these openings
Equivalent to the transmitting and reception effect that a series of antenna plays signal.The distribution mode is applied to tunnel, subway, gallery etc. more
Landform.Shortcoming is cost height, and transmission range is near.
The content of the invention
The purpose of this utility model is to provide a kind of active feeder gain compensation node of wideband and the active feeder distribution of wideband
System, solve narrow system complex, frequency range existing for traditional indoor covering system, poor compatibility, cost is high, transmission range is near etc.
Technical problem.
Technical solution of the present utility model is：A kind of active feeder gain compensation node of wideband, its special character exist
In：Including two radio frequency links of up-link and downlink, feed circuit, coupling electricity are provided with each radio frequency link
Road, antenna, signal amplifier and agc circuit；The termination power, signal amplifier and agc circuit are series in radio frequency link,
It is connected respectively in the feed circuit access radio frequency link and with signal amplifier and agc circuit, the antenna and termination power
It is connected.
Further, the frequency range of above-mentioned signal amplifier is 300M-3G, and frequency range is wide, can meet current existing network 2G,
The combining amplification of 3G, 4G wireless communication system.
The utility model also provides a kind of wideband active feeder compartment system, and it is characterized in that：Including dc source,
Multisystem mixing platform and the active feeder gain compensation node of multiple widebands；The dc source and multisystem mixing platform phase
Even, the multisystem mixing platform is connected by radio frequency feeder with the active feeder gain compensation node of first order wideband, the first order
The active feeder gain compensation node of wideband is carried out by radio frequency feeder successively feeder gain compensation node active with other widebands again
Cascade.
Further, above-mentioned dc source is connected with the active feeder gain compensation node of each wideband respectively.Using distal end
DC high-voltage feedback powers, voltage transformation is carried out inside node device, reduce the environmental requirement to node device, can also effectively improved
Node device cascades series, increases transmission range and transmission reliability.
The beneficial effects of the utility model are：
(1) up-down bidirectional amplifier is included inside node device provided by the utility model, amplifier gain is used to support
Disappear the link load of next stage feeder, and every one-level node device antenna opening transmission power can be made to be in optimal level scope, so as to
Improve terminal user's speech quality.Same signal source can save information source investment with cascading multiple stages node device.
(2) the signal amplification in the utility model node device has used broadband amplifiers, frequency range from 300M~3G,
The combining amplification of current existing network 2G, 3G, 4G wireless communication system can be met.
(3) contain AGC gain control circuit in the utility model node device, can effectively prevent a certain node output work
Signal intermodulation distortion caused by rate is too high, avoid some signal is too high from causing other signal qualitys of compartment system inside by shadow
Ring, while also reduce the length requirement for radio frequency feeder.
(4) the utility model node device separately amplifies uplink and downlink signals transmission, TX antennas and RX antenna separate designs,
So as to improve the Signal segregation degree of equipment.Transmission signal is not limited by TDD/FDD standards, need not be increased inside node device
The discrete devices such as extra switch, circulator, it is not required that extracted to TDD switching signals, reduce design difficulty, improved
Stabilization of equipment performance and reliability.
(5) the utility model compartment system uses distal end DC high-voltage feedback powers, and voltage transformation is carried out inside node device.Far
End power supply reduces the environmental requirement to node device, it is not necessary to individually finds independent current source again；DC high-voltage feedback power electric currents compare
It is low, it is safe, it can also effectively improve node device cascade series；Secondary voltage conversion ensure that inside each node device
Voltage stabilization, equipment dependability enhancing.
(6) the utility model node device can realize that existing network is more due to supporting multi-frequency, multiple types, a kind of equipment
Covering is distributed while information source.Device category is few, easy for installation, reduces the professional requirement to engineering maintenance personnel.
Brief description of the drawings
Fig. 1 is the active feeder gain compensation node structure schematic diagram of the utility model wideband.
Fig. 2 is the active feeder distributed system architecture schematic diagram of the utility model wideband.
Wherein, reference is as follows：1- base station signals, 2- dc sources, 3- multisystem mixing platforms, the active feedback of 4- widebands
Cable gain compensation node, 5- radio frequency feeders, 6- feed circuits, 7- termination powers, 8- antennas, 9- signal amplifiers, 10-AGC electricity
Road.
Embodiment
Referring to Fig. 1, the active feeder gain compensation node of wideband provided by the utility model be divided into up-link (RX) and under
Two radio frequency links of line link (TX), two radio frequency links are separate.Be serially connected with each radio frequency link termination power 7,
Signal amplifier 9 and agc circuit 10, feed circuit 6 access radio frequency link in and respectively with signal amplifier 9 and agc circuit 10
It is connected.Termination power 7 is connected with antenna 8.
The upward signal and downstream signal of base station, which separately transmit, can improve uplink downlink isolation, prevent amplifier by
In not caused enough the equipment self-excitation of isolation.For time-division systems such as TD-SCDMA, TDD-LTE, node device need not extract
Synchronizing signal, time-division processing is no longer also carried out to time division signal by switch, circulator.
Feed circuit 6 extracts the DC high voltage power supplies in feeder input and secondary pressure be transformed to it is low required for node device
Voltage source is powered to signal amplifier 9 and agc circuit 10, while feed circuit 6 feed can be exported so as to under to link again
First nodes equipment is powered.Using DC high-voltage feedback powers, node device carries out voltage quadratic transformation, can improve the electricity of node device
Stability is pressed, while high-voltage feedback power can provide multi-stage cascade node device and share same feed power supply.In addition, DC power supplies can be with
, can also be by the way of cabling parallel with radio frequency feeder be individually powered using radio frequency feeder feeding classification.
Radiofrequency signal in the coupled link circuit of termination power 7 simultaneously passes through antenna 8 and carries out Distributed coverage.Wherein, antenna 8 can be with
It is external antenna or inside antenna.
Signal amplifier 9 and agc circuit 10 go here and there broadband signal is amplified in a link and gain control；By signal
It is defeated that radiofrequency signal after amplifier 9 and agc circuit 10 is connected feeder after carrying out feed combining with the DC high pressures that feed circuit 6 provides
Go out, cascaded with next stage node device.Signal amplifier is served only for compensation and works as level feeder loss, and power output is smaller, no
Intermodulation signal is easily produced, multi-stage cascade can be carried out.Agc circuit carries out gain control to too high or too low radiofrequency signal,
Ensure whole compartment system uplink downlink balance, can also reduce the high professional qualification requirement to engineering staff's link budget.
Referring to Fig. 2, the utility model also provides a kind of active feedback of wideband based on the active feeder gain compensation node of wideband
Cable compartment system.Base station signal 1 and dc source 2 pass through multisystem mixing platform 3 (Point Of Interface, abbreviation
POI indoor distribution) is carried out by radio frequency feeder 5 after combining feed, the active feeder gain compensation section of wideband is laid in signal blind zone
Point 4, node device gain are used for the radiofrequency signal loss for compensating the radio frequency feeder 5 being attached thereto, and the active feeder gain of wideband is mended
Multi-stage cascade distribution can be carried out by repaying node 4, need not increase source device extension indoor distributed system coverage distance so as to reach
Purpose.Radio frequency feeder 5 can be single multicore or more multicores.Base station signal 1 does not limit operator and frequency,
Suitable for various kinds of mobile communication standard, including GSM, CDMA, WCDMA, TD-SCDMA, TDD-LTE, FDD-LTE, WLAN etc..And
And to be not limited to other signal covering systems such as macro base station, microcell base station or repeater, trunk amplifier defeated for base station
Go out base station signal.
Claims (8)
- A kind of 1. active feeder gain compensation node of wideband, it is characterised in that：Including two radio frequencies of up-link and downlink Link, feed circuit, termination power, antenna, signal amplifier and agc circuit are provided with each radio frequency link；The coupling Close circuit, signal amplifier and agc circuit are series in radio frequency link, in the feed circuit access radio frequency link and respectively with Signal amplifier is connected with agc circuit, and the antenna is connected with termination power.
- 2. the active feeder gain compensation node of wideband according to claim 1, it is characterised in that：The signal amplifier Frequency range is 300M-3G.
- A kind of 3. active feeder compartment system of wideband, it is characterised in that：Including dc source, multisystem mixing platform and multiple width Frequently active feeder gain compensation node；The dc source is connected with multisystem mixing platform, and the multisystem mixing platform leads to Cross radio frequency feeder with the active feeder gain compensation node of first order wideband to be connected, the active feeder gain compensation node of first order wideband Cascaded successively with the active feeder gain compensation node of multiple widebands by radio frequency feeder again.
- 4. the active feeder compartment system of wideband according to claim 3, it is characterised in that：The dc source respectively with often The individual active feeder gain compensation node of wideband is connected.
- 5. the active feeder compartment system of wideband according to claim 3 or 4, it is characterised in that：The radio frequency feeder is single Root multicore or more multicores.
- 6. the active feeder compartment system of wideband according to claim 5, it is characterised in that：The multisystem mixing platform point It is not connected with multiple base stations.
- 7. the active feeder compartment system of wideband according to claim 6, it is characterised in that：The mobile communication system of the base station Formula is the one or more in GSM, CDMA, WCDMA, TD-SCDMA, TDD-LTE, FDD-LTE and WLAN.
- 8. the active feeder compartment system of wideband according to claim 6, it is characterised in that：The base station is macro base station, micro- One or more in cellular basestation, repeater and trunk amplifier.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720489125.4U CN206835089U (en) | 2017-05-04 | 2017-05-04 | The active feeder gain compensation node of wideband and the active feeder compartment system of wideband |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720489125.4U CN206835089U (en) | 2017-05-04 | 2017-05-04 | The active feeder gain compensation node of wideband and the active feeder compartment system of wideband |
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| CN206835089U true CN206835089U (en) | 2018-01-02 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106998225A (en) * | 2017-05-04 | 2017-08-01 | 陕西天基通信科技有限责任公司 | The active feeder gain compensation node of wideband and the active feeder compartment system of wideband |
-
2017
- 2017-05-04 CN CN201720489125.4U patent/CN206835089U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106998225A (en) * | 2017-05-04 | 2017-08-01 | 陕西天基通信科技有限责任公司 | The active feeder gain compensation node of wideband and the active feeder compartment system of wideband |
| CN106998225B (en) * | 2017-05-04 | 2023-09-19 | 陕西天基通信科技有限责任公司 | Broadband active feed cable gain compensation node and broadband active feed cable distribution system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: Broadband active feed cable gain compensation node and broadband active feed cable distribution system Effective date of registration: 20191017 Granted publication date: 20180102 Pledgee: Xi'an investment and financing Company limited by guarantee Pledgor: SHAANXI TIANJI COMMUNICATION TECHNOLOGY Co.,Ltd. Registration number: Y2019980000275 |
|
| PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
| PC01 | Cancellation of the registration of the contract for pledge of patent right |
Date of cancellation: 20210510 Granted publication date: 20180102 Pledgee: Xi'an investment and financing Company limited by guarantee Pledgor: SHAANXI TIANJI COMMUNICATION TECHNOLOGY Co.,Ltd. Registration number: Y2019980000275 |
|
| PC01 | Cancellation of the registration of the contract for pledge of patent right | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: Broadband active feeder gain compensation node and broadband active feeder distribution system Effective date of registration: 20210511 Granted publication date: 20180102 Pledgee: Xi'an investment and financing Company limited by guarantee Pledgor: SHAANXI TIANJI COMMUNICATION TECHNOLOGY Co.,Ltd. Registration number: Y2021610000108 |
|
| PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
| PC01 | Cancellation of the registration of the contract for pledge of patent right |
Date of cancellation: 20220929 Granted publication date: 20180102 Pledgee: Xi'an investment and financing Company limited by guarantee Pledgor: SHAANXI TIANJI COMMUNICATION TECHNOLOGY Co.,Ltd. Registration number: Y2021610000108 |
|
| PC01 | Cancellation of the registration of the contract for pledge of patent right |