CN2738503Y - Outdoor radio frequency front end device for mobile communication base station - Google Patents
Outdoor radio frequency front end device for mobile communication base station Download PDFInfo
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- CN2738503Y CN2738503Y CNU2004200663745U CN200420066374U CN2738503Y CN 2738503 Y CN2738503 Y CN 2738503Y CN U2004200663745 U CNU2004200663745 U CN U2004200663745U CN 200420066374 U CN200420066374 U CN 200420066374U CN 2738503 Y CN2738503 Y CN 2738503Y
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Abstract
The utility model discloses an improved outdoor radio frequency front end device for mobile communication base stations, which comprises a group of smart antennas array fixed on a steel tower alone and two outdoor radio frequency front end units with the cabinet type structure. The two outdoor radio frequency front end units are spiraled on the both sides of a supporting bar back to back. The smart antennas array is connected with the outdoor radio frequency front end unit through a radio frequency coaxial cable. If the array is the omnibearing smart antennas array, the device is composed of a group of omnibearing smart antennas array and two outdoor radio frequency front end units. The cabinet of each outdoor radio frequency front end unit is provided with an aluminium profile radiator which is used as the module installation skeleton. A plurality of power amplification / low noise sending modules and direct current power supply transmit and control modules are all directly mounted on the aluminium profile radiator. The device takes the action of the improvement of breed in structural style, heat design, current supply, signal control, shielding, overlapping, water-proof, dust-proof, and salt fog-proof, aiming at the deficiency of the primitive machine, so the device can complete the function.
Description
Technical field
The utility model relates to a kind of outdoor mobile communication base station that is installed in, and exactly, relates to a kind of outdoor radio frequency front-end device of mobile communication base station, belongs to the structure-design technique field of mobile communication base station.
Background technology
TD-SCDMA is admitted in May, 2000 ITU official approval, makes it to constitute international 3G (Third Generation) Moblie standard (IMT-2000) system with the CDMA2000 of the U.S. and the WCDMA in Europe.TD-SCDMA technology with Chinese independent intellectual property right is the important breakthrough on the century-old China Telecom history of technique, indicates that China has entered world's rank of advanced units aspect mobile communication technology.
TD-SCDMA NODE B base station mainly is made up of Shelf and outdoor radio frequency front-end device two parts.Wherein, the Shelf part is mainly by Digital Subsystem (RNC interface module, Switching Module, call processing module and clock module), compositions such as digital intermediate frequency module in baseband subsystems and the Radio Frequency Subsystem and Transceiver Module, realize following function: the physical layer electric interfaces of RNC interface and ATM framing function, provide the physical layer electric interfaces of subtending port and the support of ATM framing, the access interface of local operation maintenance console is provided, the processing of controlling call signaling, resource management and transmission bearer, finish the processing of TD-SCDMA physical layer protocol, the working point and the switching point of configuration Radio Frequency Subsystem, the control RF calibration, finish digital frequency conversion, digital modulation and demodulation, pulse shaping and AGC function are finished the simulation frequency-conversion processing.
Outdoor radio frequency front-end device is made up of the intelligent antenna array that interconnects and realize communication by coaxial cable and outdoor radio-frequency front-end unit two parts, mainly finishes the functions such as amplification of up-downgoing radiofrequency signal.Realize communication and power configuration by cable between outdoor radio frequency front-end device and the Shelf.Aerial array in the outdoor radio frequency front-end device is outsourcing or purchased equipment, and two kinds of forms of omnidirectional and sectorization are arranged, and provides the N Connector hardware interface of standard 50 Ω to dock with outdoor radio-frequency front-end unit.
At present, as prior art, TD-SCDMANODE B base station prototype is succeeded in developing, and still, there is the defective on the multiple structural design in this equipment, needs further improvement badly.Introduce it below respectively:
Referring to Fig. 1, the outdoor radio frequency front-end device of this base station adopts intelligent antenna array 1 ' and outdoor radio-frequency front-end unit 2 ' the incorporate structure, be about to columniform omnidirectional intelligent aerial array row 1 ' radio-frequency front-end outdoor unit 2 ' organic connecting as one, give the sensation of a kind of compact conformation of people with it.But buried faulty stroke in calligraphy or painting for the evolution and the upgrading of product from now on simultaneously.For example during product up-gradation, if the omnidirectional intelligent aerial array row are replaced with the sectorization intelligent antenna array, this device just is difficult to meet the demands, must the redesign manufacturing, will improve R﹠D costs and R﹠D cycle undoubtedly.
In the equipment cooling design, the natural cooling radiating mode that this outdoor radio-frequency front-end unit 2 ' adopts conduction and free convection to combine.8 power amplifier modules are lined up an octagon, and each power amplifier module connects a small-sized aluminium radiator 3 ' that is used to dispel the heat respectively by keyset (8 shell that keyset forms whole outdoor radio frequency front-end device being installed) is installed.This radiating mode is simple in structure, and is economical and practical, and cost is lower.But because each power amplifier module all is to connect the aluminium radiator by the metal keyset, big thermal resistance all can be arranged between power amplifier and the metal keyset and between metal keyset and the aluminium radiator, add that the aluminium radiator volume that is connected indirectly with each power amplifier is less, area of dissipation is big inadequately, thereby the radiating effect of this device is not good, can really satisfy-40 ℃～+ 55 ℃ exterior product environment for use requirement, remain further to be verified.
In the design of power devices and signal controlling, this device adopts soft fine rule mixed transport with RS485 signal and-48V DC power supply.Because the cable sectional area of this transmission medium is less, the transmission current size that its institute can carry is limited, the electricity consumption in the time of may influencing module peak value such as power amplifier, and then cause the electric property variation.
In the shielding of equipment and overlap joint design, this device is installed in 8 power amplifiers respectively the switching metallic plate and surrounds an octagon as described in the radiator portion of front.Because processing and mounting technique are limit, and will stay a longilineal slit between the switching metallic plate of adjacent two installations, this will greatly reduce the screening effectiveness of equipment self, and having influence on this equipment, to resist the ability of external high frequency radiation also poor.
On the Seal Design such as waterproof and dustproof of exterior product, this device has adopted time inlet wire mode, promptly comprise the RS485 signal cable ,-48V DC power supply, radio-frequency (RF) coaxial cable and feeder etc. all pass in and out the cable of outdoor radio-frequency front-end unit, all the bottom of slave unit is introduced or is picked out, and all connectors that externally connect have all been selected waterproof, anti-salt fog type air locking for use, but, do not take further measures for adjacent two slits of installing between the switching metallic plate, can the degree of protection that reach IP55 remain further to be verified.
The utility model content
The purpose of this utility model provides a kind of outdoor radio frequency front-end device of improved mobile communication base station, this device has all been taked the corresponding structure corrective measure to the weak point of prototype in version, thermal design, power supply and signal controlling design, shielding and overlap joint design, waterproof and dustproof and the design of anti-salt fog, make this device can finish its function better, and the improvement of dependency structure all will have positive popularizing action for the equipment development of outdoor microcellulor and Pico cell.
The purpose of this utility model is achieved in that a kind of outdoor radio frequency front-end device of improved mobile communication base station, comprises intelligent antenna array and outdoor radio-frequency front-end unit; It is characterized in that: each outdoor radio frequency front-end device is made of an intelligent antenna array and one group of outdoor radio-frequency front-end unit; Wherein intelligent antenna array fixedly is mounted on the iron tower separately, outdoor radio-frequency front-end unit is a bin formula structure, per two outdoor radio-frequency front-end unit constitute one group, and installation rebound, installing rack and pole by its rear side lean against that spiral shell is solid in the support bar both sides privately, is electrically connected by the radio frequency coaxial-cable realization between intelligent antenna array and the outdoor radio-frequency front-end unit.
When smart antenna array was classified the omnidirectional intelligent aerial array row as, this device was made up of one group of omnidirectional intelligent aerial array row and two outdoor radio-frequency front-end unit.
When smart antenna array was classified the sectorization intelligent antenna array as, this device had three, promptly was made up of three groups of sectorization intelligent antenna arrays and six outdoor radio-frequency front-end unit; Each outdoor radio frequency front-end device all has one group of sectorization intelligent antenna array and two outdoor radio-frequency front-end unit, installation rebound, installing rack and the pole of two outdoor radio-frequency front-end unit in each outdoor radio frequency front-end device by its rear side leans against that spiral shell is solid in the both sides of support bar privately, and is connected with the sectorization intelligent antenna array that belongs to same outdoor radio frequency front-end device by radio frequency coaxial-cable; Three outdoor radio frequency front-end devices are " product " font and are packed on the iron tower.
The top of the outdoor radio-frequency front-end of described bin formula unit is skewed baffle plate, be used for sun-proof, hide rain and rainwater water conservancy diversion; Be installed on an area in the bin and be not less than 550mm * 400mm, be used as the aluminium section bar radiator that module is installed skeleton, a plurality of power amplifiers/LNA module, DC power supply conversion and control module, power-supply filter, RS485 control signal protection module and antenna filter all are directly installed on this aluminium section bar radiator; The vertical bin bottom that is packed in of RS485 connector, feed surge suppressor and signal surge suppressor.
Be coated with the conduction estersil that reduces thermal resistance on the contact-making surface between described power amplifier/LNA module and DC power supply conversion and control module and the aluminium section bar radiator respectively, described aluminium section bar spreader surface has been made blackout and has been handled, so that improve radiating effect.
The RS485 control signal of described outdoor radio-frequency front-end unit has separately independently transmission channel with power supply: the RS485 control signal that is connected with the Shelf control circuit is realized being electrically connected by one group of soft Thin cable, and independent respectively one group of feed surge suppressor and the radio frequency coaxial-cable of using in each outdoor radio-frequency front-end unit supplied with DC power supply.
Described RS485 control signal cable, DC power supply cable and radio-frequency (RF) coaxial cable, antenna feeder cable all are to insert or pick out rack from the bottom of outdoor radio-frequency front-end unit.
Power amplifier/LNA the module of installing in described each outdoor radio-frequency front-end unit has four, is convenient to realize the antenna method of 4+1.
Described outdoor radio-frequency front-end unit is the protected type refrigerator structure, each cable and feeder line to the turnover rack are provided with protection/filtering/surge inhibition processing apparatus: RS485 control signal protection module is installed on RS485 control signal cable, the signal surge suppressor is installed on the radiofrequency signal cable, the feed surge suppressor is installed on the feed radio frequency cable and DC wave filter is installed, at feeder mounted antennas filter and signal surge suppressor at power output end; Described feed surge suppressor and signal surge suppressor all are installed on the rack bottom metal with the N Connector form, and electric conductive oxidation or plating are done in all structural member surfaces, and shielding measure is taked in the slit between each structural member of composition rack.
Described shielding measure comprises: on the aluminium section bar radiator, groove is set, and setting-in " O " shape waterproof, anti-salt fog, resistant to elevated temperatures conductive rubber shielding gasket in the groove, and trip bolt is installed in both sides is shielded aluminium section bar radiator and rack and enclose slit between the frame; Enclose frame or/and U-lag is set on the cover at rack, setting-in waterproof, anti-salt fog, resistant to elevated temperatures conductive rubber shielding gasket in the U-lag, described conductive rubber shielding gasket be shaped as solid D type or hollow D type or P type or U type.
The member material that is used to install and fix in the described outdoor radio-frequency front-end unit is a stainless steel, and all the other members are aluminium alloy; Rack encloses frame, rack lid and each modular structure surface and all does the electric conductive oxidation processing, and rack encloses the exposed surface spray booth rustproof lacquer of frame, rack lid or sprays paint.
The utility model is a kind of outdoor radio frequency front-end device that improves the mobile communication base station of structure, defective and weak point that this device exists at the TD-SCDMA NODE B base station prototype of succeeding in developing at present, on general structure, especially in individual configurations form, thermal design, power supply and signal controlling design, shielding and overlap joint design, waterproof and dustproof and the design of anti-salt fog of radio-frequency front-end unit, all take the corresponding structure corrective measure, made this device can finish its function better.And the corrective measure of the dependency structure that the utility model proposes all will have positive reference and popularizing action for the equipment development of outdoor microcellulor and Pico cell.
Description of drawings
Fig. 1 forms schematic diagram as the structure of the outdoor radio frequency front-end device of the TD-SCDMA NODE B base station prototype of prior art.
Fig. 2 is that general structure of the present utility model is formed and concerned schematic diagram with aerial lug.
Fig. 3 (A), (B), (C) are respectively right view, front view and the left views that the structure of the radio-frequency front-end unit in the utility model is formed.
Fig. 4 is that the slit that the rack of radio-frequency front-end unit in the utility model encloses between frame and the aluminium section bar radiator adopts the conductive rubber shielding gasket to carry out the structural representation of shielding processing.
Embodiment
Referring to Fig. 2, the utility model is a kind of outdoor radio frequency front-end device of improved mobile communication base station, comprises intelligent antenna array A that fixedly is mounted on separately on the iron tower and the outdoor radio-frequency front-end unit B that is bin formula structure; Wherein per two outdoor radio-frequency front-end unit B constitute one group, installation rebound, installing rack and pole by its rear side leans against that spiral shell is solid in the support bar both sides privately, is electrically connected by the radio frequency coaxial-cable realization between intelligent antenna array A and the outdoor radio-frequency front-end unit B.
When intelligent antenna array A is the omnidirectional intelligent aerial array row, only need an outdoor radio frequency front-end device supporting with it, promptly form outdoor radio frequency front-end device by an omnidirectional intelligent aerial array row A and two outdoor radio-frequency front-end unit B.
When intelligent antenna array A is the sectorized antennas array, need three outdoor radio frequency front-end devices supporting with it, promptly form by three groups of sectorization intelligent antenna arrays and six outdoor radio-frequency front-end unit.Each outdoor radio frequency front-end device all has one group of sectorization intelligent antenna array A and two outdoor radio-frequency front-end unit B, and installation rebound, installing rack and the pole of two outdoor radio-frequency front-end unit B in each outdoor radio frequency front-end device by its rear side leans against the both sides that spiral shell Guan County privately is contained in support bar, and is connected with the sectorization intelligent antenna array A that belongs to same outdoor radio frequency front-end device, independently installs and fixes by radio frequency coaxial-cable; Three outdoor radio frequency front-end devices are " product " font and are packed on the iron tower.
Referring to Fig. 2, the utility model device inner and with the line relation of outside: 11 of downside straight lines serial number from left to right is abcdefghijk among the figure, and wherein: a, k two lines are respectively the control signal cable of two outdoor radio-frequency front-end unit; B, c, each line of d, e are the radio-frequency (RF) coaxial cable that belongs to first outdoor radio-frequency front-end unit, and wherein b is cable-fed; The f line is the boresight antenna cable; G, h, each line of i, j are the radio frequency coaxial-cable that belongs to second outdoor radio-frequency front-end unit, and wherein j is cable-fed.
The utility model separates outdoor radio-frequency front-end unit B on general structure with intelligent antenna array A, the centre is connected by coaxial cable.Like this, not only be beneficial to the independent development of intelligent antenna array A and outdoor radio-frequency front-end unit B, improve efficiency of research and development, shorten the R﹠D cycle, accelerate launch, the more important thing is the maintenance separately and the maintenance that are beneficial to intelligent antenna array and outdoor radio-frequency front-end unit, help the evolution and the upgrading of product, make that the omnidirectional intelligent aerial array row are replaced to the sectorization intelligent antenna array becomes simple.Really, if intelligent antenna array A when covering the sectorization intelligent antenna array of 120 degree, then will have three outdoor radio frequency front-end devices, three outdoor radio frequency front-end devices are " product " font and are packed on the iron tower.
The utility model has not only been done improvement to the general structure of outdoor radio frequency front-end device, to wherein outdoor radio-frequency front-end unit then having carried out architecture advances from many aspects.Specify it referring to Fig. 3:
In the equipment cooling design, the utility model adopts the natural cooling radiating mode of conduction, free convection phase structure equally.Different is, each outdoor radio-frequency front-end unit of the present utility model is a bin formula structure, and its top is skewed baffle plate, is used to reduce the radiation of the sun to equipment, and hides rain and rainwater water conservancy diversion.Settled an area to be not less than the aluminium section bar radiator 8 of 550mm * 400mm in each bin, skeleton has been installed as module.DC power supply conversion and control module 1, four power amplifier/LNA modules 2, power-supply filter and RS485 control signal protection modules 3 and four antenna filters 4 all are directly installed on this aluminium section bar radiator 8; Two RS485 connectors 5, feed surge suppressor 6 and seven all vertical bin bottoms that are packed in of signal surge suppressor 7.9 is the installing racks that are used to be packed in the support bar outside among the figure; The 10th, rebound is installed.Because in each outdoor radio-frequency front-end unit 4 power amplifiers/LNA module 2 is arranged, under the situation of algorithm maturation, is easy to realize the antenna method of 4+1.And, on the contact-making surface between power amplifier/LNA module 2 and DC power supply conversion and control module 1 and the aluminium section bar radiator 8, be coated with the conduction estersil that reduces thermal resistance respectively, also to the processing of turning black of aluminium section bar radiator 8 surfaces, these can both improve radiating effect.
In the design of power devices and signal controlling, the utility model adopt RS485 control signal and power supply separately, the way of independent transmission separately.
There is one tunnel RS485 control signal that is connected with the Shelf control circuit each outdoor radio-frequency front-end unit, is realized being electrically connected by one group of soft Thin cable, be easy to Shelf in control section corresponding one by one.Each outdoor radio-frequency front-end unit also has one tunnel power supply power cable independently: realize jointly-supply of 48V DC power supply with feed surge suppressor and radio-frequency (RF) coaxial cable.Because radio-frequency (RF) coaxial cable sectional area is bigger, thereby the ampere numerical value of transmission current will strengthen greatly, and every radio frequency cable feed can be up to 4A.
Shielding at equipment designs with overlap joint, the utility model is that each outdoor radio-frequency front-end cell design is become the shielding rack, not only the cable to all turnover racks (comprises RS485 control signal cable, the DC power supply cable, radio-frequency (RF) coaxial cable and feeder) all protect/filtering/surge inhibition processing: RS485 control signal protection module is installed on RS485 control signal cable, the signal surge suppressor is installed on the radiofrequency signal cable, the feed surge suppressor is installed on the feed radio frequency cable and DC wave filter is installed, at feeder mounted antennas filter and signal surge suppressor at power output end; Wherein feed surge suppressor and signal surge suppressor all are installed on the rack bottom metal with the N Connector form.And on technology, PROCESS FOR TREATMENT such as electric conductive oxidation or plating carrying out on all structural member surfaces, shielding measure is taked in the slit between each structural member of composition rack.
Shielding measure is taked in slit between all structural members of forming the shielding rack: (1) for aluminium section bar radiator 8 with shield rack and enclose slit between the frame 11, be on aluminium section bar radiator 8, to offer groove, the conductive rubber shielding gasket 12 of setting-in " O " shape waterproof, anti-salt fog, high temperature resistant (60 ℃～+ 270 ℃) in the groove, and the shielding measure (referring to Fig. 4) of trip bolt is installed in both sides, the spacing of holding screw is handled according to λ/20 principles.(2) the shielding rack is enclosed frame and the shield machine cabinet-type air conditioner slit between covering, be to enclose frame at rack equally or/and U-lag is set on the cover, the conductive rubber shielding gasket of setting-in waterproof, anti-salt fog, high temperature resistant (60 ℃～+ 270 ℃) in the U-lag, U-lag is welded on that rack encloses frame or/and on the cover, the shape of the conductive rubber shielding gasket of this moment can be solid D type or hollow D type or P type or U type.
By these concrete screen method and PROCESS FOR TREATMENT, can be so that each outdoor radio-frequency front-end unit has the complete machine screening effectiveness that is not less than 40dB/30MHz～3GHz.Not only can prevent electromagnetic leakage like this, contaminated environment, and can resist external high-frequency signal radiation and interference very effectively, thus guarantee the equipment operate as normal better.
The utility model is on Seal Design such as waterproof and dustproof, adopted time inlet wire mode, promptly all cables (comprise RS485 control signal cable ,-48V DC power supply cable, radio-frequency (RF) coaxial cable, antenna feeder cable) that pass in and out outdoor radio-frequency front-end unit all are to insert or pick out rack from the bottom of outdoor radio-frequency front-end unit.And all connectors that externally connect are all selected waterproof, anti-salt fog type air locking for use; The aluminium section bar radiator of radio-frequency front-end unit shielding rack and shielding rack enclose between the frame, shield when rack encloses between frame and the shielding rack lid and all adopt the method for the conductive rubber shielding gasket that adds waterproof, anti-salt fog, high temperature resistant (60 ℃～+ 270 ℃) to be sealed outside process chamber, thereby the waterproof and dustproof ability of equipment is stronger, generally can reach the IP55 level.
In the anti-salt fog design of equipment, mainly taked following major measure:
(1) select anti-salt fog material for use: each member that is used to install and fix in the outdoor radio-frequency front-end unit (rebound, installing rack and pole etc. for example are installed) is a stainless steel, the equal aluminium alloy material of the material of all the other structural members.All adopt waterproof between the cover that encloses frame and shielding rack of the enclosing between the frame of aluminium section bar radiator and shielding rack, shielding rack, prevent the conductive rubber shielding gasket of salt fog, high temperature resistant (60 ℃～+ 270 ℃).All connectors that externally connect have all been selected waterproof, anti-salt fog type air locking for use.
(2) PROCESS FOR TREATMENT: each part of outdoor radio-frequency front-end unit: aluminium section bar radiator, rack enclose frame, rack lid and each modular structure part surface and all carry out the electric conductive oxidation processing.
(3) surface treatment: aluminium section bar spreader surface blackout is handled to improve radiating effect; Rack encloses the exposed surface spray booth rustproof lacquer of structural members such as frame and rack lid or sprays paint.
Claims (11)
1, a kind of outdoor radio frequency front-end device of improved mobile communication base station comprises intelligent antenna array and outdoor radio-frequency front-end unit; It is characterized in that: each outdoor radio frequency front-end device is made of an intelligent antenna array and one group of outdoor radio-frequency front-end unit; Wherein intelligent antenna array fixedly is mounted on the iron tower separately, outdoor radio-frequency front-end unit is a bin formula structure, per two outdoor radio-frequency front-end unit constitute one group, and installation rebound, installing rack and pole by its rear side lean against that spiral shell is solid in the support bar both sides privately, is electrically connected by the radio frequency coaxial-cable realization between intelligent antenna array and the outdoor radio-frequency front-end unit.
2, outdoor radio frequency front-end device according to claim 1 is characterized in that: when smart antenna array was classified the omnidirectional intelligent aerial array row as, this device was made up of one group of omnidirectional intelligent aerial array row and two outdoor radio-frequency front-end unit.
3, outdoor radio frequency front-end device according to claim 1 is characterized in that: when smart antenna array was classified the sectorization intelligent antenna array as, this device had three, promptly was made up of three groups of sectorization intelligent antenna arrays and six outdoor radio-frequency front-end unit; Each outdoor radio frequency front-end device all has one group of sectorization intelligent antenna array and two outdoor radio-frequency front-end unit, and installation rebound, installing rack and the pole of two outdoor radio-frequency front-end unit in each outdoor radio frequency front-end device by its rear side leans against that spiral shell is solid in the both sides of support bar privately, and is connected with the sectorization intelligent antenna array that belongs to same outdoor radio frequency front-end device by radio frequency coaxial-cable; Three outdoor radio frequency front-end devices are " product " font and are packed on the iron tower.
4, outdoor radio frequency front-end device according to claim 1 is characterized in that: the top of the outdoor radio-frequency front-end of described bin formula unit is skewed baffle plate, be used for sun-proof, hide rain and rainwater water conservancy diversion; Be installed on an area in the bin and be not less than 550mm * 400mm, be used as the aluminium section bar radiator that module is installed skeleton, a plurality of power amplifiers/LNA module, DC power supply conversion and control module, power-supply filter, RS485 control signal protection module and antenna filter all are directly installed on this aluminium section bar radiator; The vertical bin bottom that is packed in of RS485 connector, feed surge suppressor and signal surge suppressor.
5, outdoor radio frequency front-end device according to claim 4, it is characterized in that: be coated with the conduction estersil that reduces thermal resistance on the contact-making surface between described power amplifier/LNA module and DC power supply conversion and control module and the aluminium section bar radiator respectively, described aluminium section bar spreader surface has been made blackout and has been handled.
6, outdoor radio frequency front-end device according to claim 1, it is characterized in that: the RS485 control signal of described outdoor radio-frequency front-end unit has separately independently transmission channel with power supply: the RS485 control signal that is connected with the Shelf control circuit is realized being electrically connected by one group of soft Thin cable, and independent respectively one group of feed surge suppressor and the radio frequency coaxial-cable of using in each outdoor radio-frequency front-end unit supplied with DC power supply.
7, according to claim 1 or 6 described outdoor radio frequency front-end devices, it is characterized in that: described RS485 control signal cable, DC power supply cable and radio-frequency (RF) coaxial cable, antenna feeder cable all are to insert or pick out rack from the bottom of outdoor radio-frequency front-end unit.
8, outdoor radio frequency front-end device according to claim 1 is characterized in that: the power amplifier/LNA module of installing in described each outdoor radio-frequency front-end unit has four, is convenient to realize the antenna method of 4+1.
9, outdoor radio frequency front-end device according to claim 1, it is characterized in that: described outdoor radio-frequency front-end unit is the protected type refrigerator structure, each cable and feeder line to the turnover rack are provided with protection/filtering/surge inhibition processing apparatus: RS485 control signal protection module is installed on RS485 control signal cable, the signal surge suppressor is installed on the radiofrequency signal cable, the feed surge suppressor is installed on the feed radio frequency cable and DC wave filter is installed, at feeder mounted antennas filter and signal surge suppressor at power output end; Described feed surge suppressor and signal surge suppressor all are installed on the rack bottom metal with the N Connector form, and electric conductive oxidation or plating are done in all structural member surfaces, and shielding measure is taked in the slit between each structural member of composition rack.
10, outdoor radio frequency front-end device according to claim 9, it is characterized in that: described shielding measure comprises: on the aluminium section bar radiator groove is set, setting-in " O " shape waterproof, anti-salt fog, resistant to elevated temperatures conductive rubber shielding gasket in the groove, and trip bolt is installed in both sides is shielded aluminium section bar radiator and rack and enclose slit between the frame; Enclose frame or/and U-lag is set on the cover at rack, setting-in waterproof, anti-salt fog, resistant to elevated temperatures conductive rubber shielding gasket in the U-lag, described conductive rubber shielding gasket be shaped as solid D type or hollow D type or P type or U type.
11, outdoor radio frequency front-end device according to claim 1 is characterized in that: the member material that is used to install and fix in the described outdoor radio-frequency front-end unit is a stainless steel, and all the other members are aluminium alloy; Rack encloses frame, rack lid and each modular structure surface all to be made electric conductive oxidation and handles, and the exposed surface spray booth that rack encloses frame, rack lid coats outward or sprays paint.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2004200663745U CN2738503Y (en) | 2004-07-08 | 2004-07-08 | Outdoor radio frequency front end device for mobile communication base station |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2004200663745U CN2738503Y (en) | 2004-07-08 | 2004-07-08 | Outdoor radio frequency front end device for mobile communication base station |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2738503Y true CN2738503Y (en) | 2005-11-02 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2004200663745U Expired - Lifetime CN2738503Y (en) | 2004-07-08 | 2004-07-08 | Outdoor radio frequency front end device for mobile communication base station |
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| Country | Link |
|---|---|
| CN (1) | CN2738503Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2010108330A1 (en) * | 2009-03-27 | 2010-09-30 | Siemens Aktiengesellschaft | Radio communication system and method for communication between base station and antenna |
| CN107836062A (en) * | 2015-07-07 | 2018-03-23 | 阿莫绿色技术有限公司 | Fin and the wireless power transmission module including the fin |
-
2004
- 2004-07-08 CN CNU2004200663745U patent/CN2738503Y/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2010108330A1 (en) * | 2009-03-27 | 2010-09-30 | Siemens Aktiengesellschaft | Radio communication system and method for communication between base station and antenna |
| CN102365829A (en) * | 2009-03-27 | 2012-02-29 | 西门子公司 | Radio communication system and method for communication between base station and antenna |
| US8682370B2 (en) | 2009-03-27 | 2014-03-25 | Siemens Aktiengesellschaft | Radio communication system and method for communication between base station and antenna |
| CN102365829B (en) * | 2009-03-27 | 2015-04-22 | 西门子公司 | Radio communication system and method for communication between base station and antenna |
| CN107836062A (en) * | 2015-07-07 | 2018-03-23 | 阿莫绿色技术有限公司 | Fin and the wireless power transmission module including the fin |
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