CN107037273A - A kind of antenna measurement mounting bracket - Google Patents
A kind of antenna measurement mounting bracket Download PDFInfo
- Publication number
- CN107037273A CN107037273A CN201710378596.2A CN201710378596A CN107037273A CN 107037273 A CN107037273 A CN 107037273A CN 201710378596 A CN201710378596 A CN 201710378596A CN 107037273 A CN107037273 A CN 107037273A
- Authority
- CN
- China
- Prior art keywords
- mounting bracket
- antenna measurement
- antenna
- bracket according
- manual rotation
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R29/00—Arrangements for measuring or indicating electric quantities not covered by groups G01R19/00 - G01R27/00
- G01R29/08—Measuring electromagnetic field characteristics
- G01R29/10—Radiation diagrams of antennas
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R1/00—Details of instruments or arrangements of the types included in groups G01R5/00 - G01R13/00 and G01R31/00
- G01R1/02—General constructional details
- G01R1/04—Housings; Supporting members; Arrangements of terminals
- G01R1/0408—Test fixtures or contact fields; Connectors or connecting adaptors; Test clips; Test sockets
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Variable-Direction Aerials And Aerial Arrays (AREA)
- Support Of Aerials (AREA)
Abstract
The present invention provides a kind of antenna measurement mounting bracket, including the support bar being sequentially connected, roll device and mounting platform, the mounting platform is used to install antenna to be measured, the roll device includes support, roll axle and manual rotation component, the support is fixedly mounted on support bar and offered in the horizontal direction the axis hole worn for roll axle, the one end for the roll axle being arranged on support connects the mounting platform, the other end connects the manual rotation component, to be rotated under the drive of the manual rotation component and the mounting platform is rotated around the axis of the roll axle.The main body for the antenna measurement mounting bracket that the present invention is provided is made of nonmetallic materials, especially roll device, relative to the servo control system of prior art, rotation present invention employs manual rotation component to complete antenna to be measured is adjusted, greatly reduce the influence of servomotor and metal material to test result, make test result more accurate, while ensureing testing efficiency.
Description
Technical field
The present invention relates to communication technique field, more particularly to a kind of antenna measurement mounting bracket.
Background technology
In moving communicating field, the accuracy tested antenna radiation characteristics is of crucial importance.In mobile communication system,
In order to truely and accurately measure the index of the property indices of antenna, particularly radiance, the environment of test is very
It is crucial.Good test environment not only includes areflexia, glitch-free test site, also including the high test of efficient, reliability
Turntable.
In order to improve the precision of test table, it is common practice to, all parts on turntable all employ high rigidity
Metalwork, while each axle on the testing efficiency in order to lift turntable, turntable is realized automatically using servomotor driving
Control.But the reflected radiation signals effect that the metalwork and servomotor of this high rigidity have, test result is caused
Strong influence.
In these cases, it is necessary to which antenna measurement peace that is a kind of simple in construction and can improving antenna measurement accuracy is provided
Shelve.
The content of the invention
The purpose of the present invention aims to provide antenna measurement that is a kind of simple in construction and can improving antenna measurement accuracy and installed
Frame.
To achieve these goals, the present invention provides following technical scheme：
A kind of antenna measurement mounting bracket, including support bar, the roll device on the support bar, and with it is described
Roll device connects and is used for the mounting platform for installing antenna to be measured, and the roll device includes support, roll axle and rotation manually
Turn component, the support is fixedly mounted on the support bar and offers axis hole in the horizontal direction, and the roll axle is arranged in
The axis hole, and one end of the roll axle connects the mounting platform, the other end connects the manual rotation component, with
Rotated under the drive of the manual rotation component and the mounting platform is rotated around the axis of the roll axle.
It is preferred that, the manual rotation component includes being used to make what the manual rotation component was fixed relative to the support
Alignment pin.
It is preferred that, the manual rotation component includes swivel plate and the handle on the swivel plate, the handle
Including the draw ring mounting seat being fixedly mounted with the swivel plate, and the draw ring in the draw ring mounting seat, the drawing
The spring being pressurized all the time, one end of the spring and the positioning pin connection are provided with ring mounting seat, the other end is connected to institute
The inside of draw ring mounting seat is stated, the draw ring mounting seat is applied pressure all the time to the alignment pin.
It is preferred that, the handle also includes latch, and the draw ring is pivotally connected by the latch and the alignment pin, institute
State draw ring mounting seat and offer locating slot close to one end of draw ring, the latch can be in the presence of the draw ring by the positioning
Pin is pulled out, so that the manual rotation component can rotate relative to the support, and the latch is being drawn out state
When be rotatably caught in the locating slot.
Further, one end on the support close to the manual rotation component is installed with location-plate, described fixed
The positioning hole being pressed into for the alignment pin is offered on the plate of position.
It is preferred that, the positioning hole is provided with multiple, and the multiple positioning hole is justified on the location-plate around roll axle axle center
Zhou Junbu, and one end of the multiple positioning hole towards alignment pin offers guide angle.
It is preferred that, the roll device also includes being arranged in the axis hole and being used for the bearing for installing the roll axle.
More excellent, the roll device also includes being used to limit the bearing limit that the bearing is axially moved along the roll axle
Position part.
It is preferred that, the support bar is truncated cone-shaped support bar.
More excellent, the two ends of the support bar are respectively arranged with upper flange and lower flange, and the roll device passes through described
Upper flange is fixed on the supporting bar top, and the lower flange is used to the antenna measurement mounting bracket being connected with test table.
It is preferred that, the antenna measurement mounting bracket also includes at least two blocks sleepers, and the sleeper is installed on described install and put down
On platform and for placing antenna to be measured.
More excellent, it is provided with the sleeper on limited block, the mounting platform and offers bore less than the limited block
The stopper slot of external diameter, the sleeper is arranged on the stopper slot by the limited block interference.
It is preferred that, the mounting platform hollow out sets to form multiple lightening holes.
It is preferred that, the antenna measurement mounting bracket also includes enhancing plate, and the enhancing plate is arranged on the mounting platform
And for lifting the weight capacity of the mounting platform.
More excellent, the antenna measurement mounting bracket also includes the company being fixedly connected with the enhancing plate and the roll axle
Fishplate bar.
It is preferred that, the anti-skidding screens for fixed antenna is provided with the mounting platform.
It is preferred that, the counterweight mounting hole for installing counter-balanced carriage is provided with the mounting platform, a counter-balanced carriage passes through institute
State counterweight mounting hole and be connected to the mounting platform, and counter-balanced carriage is used to place balancing weight.
It is preferred that, the mounting platform, the support and the support bar are made up of nonmetallic materials.
More excellent, the support bar is made up of glass-reinforced plastic material.
Compared with prior art, the solution of the present invention has advantages below：
1st, the main body of the roll device for the antenna measurement mounting bracket that the present invention is provided is made of nonmetallic materials, relative to
The servo control system of prior art, the rotation for employing manual rotation component to complete antenna to be measured is adjusted, greatly drop
The low influence of servomotor and metal material to test result, makes test result more accurate, while ensureing testing efficiency.
2nd, the manual rotation component of the roll device for the antenna measurement mounting bracket that the present invention is provided uses positioning finger setting, and
By the position for control alignment pin of shaking hands, the rotational positioning of antenna to be measured is solved the problems, such as, and it is easy to operate.
3rd, the support bar for the antenna measurement mounting bracket that the present invention is provided is truncated cone-shaped support bar, and it uses glass steel
Material is made, and not only eliminates influence of the metal material to test result, also solves support bar and is shaken in antenna rotary test
The problem of, the stability and accuracy of significant increase test, while alleviate the weight of support bar, lifting test table makes
Use the life-span.
4th, the mounting platform for the antenna measurement mounting bracket that the present invention is provided is used as the portion in mounting bracket closest to antenna to be measured
Part, integrally employs the design of non-metallic non-electrical gasification, effectively eliminates influence of the metal material to test result.
Brief description of the drawings
The antenna measurement mounting bracket that the present invention is provided will be apparent from the following description of the accompanying drawings of embodiments and
It is readily appreciated that, wherein：
Fig. 1 is the stereogram of the antenna measurement mounting bracket of the present invention；
Fig. 2 is the exploded view of the roll device of the antenna measurement mounting bracket of the present invention；
Fig. 3 is the structural representation of the handle of the antenna measurement mounting bracket of the present invention；
Fig. 4 is the structural representation of the support bar of the antenna measurement mounting bracket of the present invention；
Fig. 5 is the structural representation of the mounting platform of the antenna measurement mounting bracket of the present invention；
Fig. 6 is the structural representation of the sleeper of the antenna measurement mounting bracket of the present invention.
Embodiment
Embodiments of the invention are described below in detail, the example of the embodiment is shown in the drawings, wherein from beginning to end
Same or similar label represents same or similar element or the element with same or like function.Below with reference to attached
The embodiment of figure description is exemplary, is only used for explaining the present invention, and is not construed as limiting the claims.
Fig. 1 to Fig. 6 collectively illustrates the antenna measurement mounting bracket 1000 of the present invention, for installing antenna 2000 to be measured and pacifying
On test table (not shown, similarly hereinafter), the performance indications of observation line 2000 are treated in realization, for example, radiate the test of index.
The antenna measurement mounting bracket 1000 includes the support bar 10 played a supportive role, on the support bar 10
Roll device 20, and the mounting platform 30 for installing antenna 2000 to be measured is connected and is used for the roll device 20.The horizontal stroke
Rolling device 20 is used to do mounting platform 30 rotary motion on vertical direction, antenna 2000 to be measured is rotated in vertical direction
Different angles are tested, and test not like-polarized data.
The roll device 20 includes support 21, roll axle 22 and the manual rotation component 23 being connected with each other.The support
21 are fixedly mounted on the support bar 10, and the support offers the axis hole 211 at its two ends of insertion in the horizontal direction.It is described
Roll axle 22 is arranged on the support 21 through the axis hole 211, and one end connection installation of the roll axle 22
Platform 30, the other end connects the manual rotation component 23.The manual rotation component 23 is used to drive roll axle 22 to revolve manually
Turn, the mounting platform 30 installed in the other end of roll axle 22 is rotated around the axis of the roll axle 22.
Relative to the servo control system of prior art, antenna 2000 to be measured is completed using manual rotation component 23
Rotation regulation, greatly reduce the influence of servomotor and metal material to test result, make test result more accurate, together
When ensure testing efficiency.
It is preferred that, the manual rotation component 23 includes alignment pin 231, and the alignment pin 231 is used in manual rotation group
Part 23 makes the manual rotation component 23 be fixed relative to the support 21 after rotating, and realizes the positioning work(of manual rotation component 23
Can, antenna 2000 to be measured is stably tested.
The manual rotation component 23 includes swivel plate 232 and the handle 233 on the swivel plate 232.It is described
Handle 233 includes the draw ring mounting seat 2331 being fixedly mounted with the swivel plate 232 and installed in the draw ring mounting seat 2331
On draw ring 2332.The spring 2333 being pressurized all the time, one end of the spring 2333 are provided with the draw ring mounting seat 2331
It is connected with the alignment pin 231, the other end is connected to the inside of the draw ring mounting seat 2331, makes the draw ring mounting seat 2331
Pressure is applied all the time to the alignment pin 231.
The handle 233 also includes latch 2334, and the draw ring 2332 is by the latch 2334 and the alignment pin 231
Pivotally connected, the draw ring mounting seat 2331 is provided with locating slot 2335 close to one end of draw ring 2332, and the latch 2334 can
The alignment pin 231 is pulled out in the presence of the draw ring 2332, so that the manual rotation component 23 can be relative to described
Support 21 rotates, and the latch 231 is rotatably caught in the locating slot 2335 when being drawn out state.
One end on the support 21 close to the manual rotation component 23 is installed with location-plate 24, the location-plate
The positioning hole 241 being pressed into for the alignment pin 231 is offered on 24.
The positioning hole 241 is provided with multiple, such as four, four positioning holes 241 are on the location-plate 24 around horizontal stroke
The axle center circumference uniform distribution of roller bearing 22, so as to which manual rotation component is positioned at into four positions, to adapt to dual polarized antenna two
The rotary test of polarization.
Preferably, the positioning hole 241 offers guide angle towards one end of alignment pin 231 around the positioning hole 241,
In order to the press-in of the alignment pin 231.
The roll device 20 also includes being arranged in the axis hole 211 and being used for the bearing for installing the roll axle 22
212, to ensure that the roll axle 22 smooth can be rotated.
The roll device 20 also includes being used to limit the bearing limit that the bearing 212 is axially moved along the roll axle 22
Position part 213, so that the bearing 212 comes off from support when preventing antenna measurement, and then ensures the accuracy of test result.
Preferably, the support bar 10 is shaped as truncated cone-shaped, to prevent antenna 2000 to be measured from occurring in rotary test
The phenomenon of shake, the stability and accuracy of significant increase test.
The top of the support bar 10 is provided with upper flange 11, the roll device 20 by the upper flange 11 with it is described
Support bar 10 is connected.
The bottom of the support bar 10 is provided with lower flange 12, and the lower flange 12 is used for the antenna measurement mounting bracket
1000 are connected on test table.
Preferably, the support bar 10 is by nonmetallic materials, and such as fiberglass is made, to reduce the material of support bar 10 to day
The influence of line test result.Meanwhile, support bar that fiberglass is made is rigidly larger, lighter weight, can meet support demand,
Be conducive to the service life of extended testing system turntable.
The antenna measurement mounting bracket 1000 also includes at least two blocks sleepers 31, and the sleeper 31 is installed on described install and put down
On platform 30 and for placing antenna 2000 to be measured.
It is provided with the sleeper 31 on limited block 311, the mounting platform 30 and offers bore less than the limited block
The stopper slot 32 of 311 external diameters, the sleeper 31 is arranged on the stopper slot 32 by the interference of limited block 311.
The hollow out of mounting platform 30 sets to form multiple lightening holes 33, so that mitigate the weight of mounting platform 30, with
The support pressure of support bar 10 is reduced, drives manual rotation component to rotate 23 using less power while being easy to operator.
The antenna measurement mounting bracket 1000 also includes enhancing plate 34, and the enhancing plate 34 is arranged on the mounting platform
On 1000, the weight capacity for lifting the mounting platform 1000.
The antenna measurement mounting bracket 1000 also includes what is be fixedly connected with the enhancing plate 34 and the roll axle 22
Connecting plate 25.
At least side of the mounting platform 30 along longitudinally is provided with the antiskid card for fixing antenna 2000 to be measured
Position 35.
One end of the mounting platform 30 is provided with the counterweight mounting hole 36 for installing counter-balanced carriage.In antenna measurement,
One counter-balanced carriage 37 is connected to the mounting platform 30 after balancing weight 38 has been installed by counterweight mounting hole 36, installs flat to realize
The balance at the two ends of platform 30, is easily installed the stable rotation of platform 30 (and antenna 2000 to be measured).
In addition, reducing the influence of the antenna measurement mounting bracket 1000 to antenna measurement result, the support to maximize
21st, location-plate 24, mounting platform 30, enhancing plate 34, connecting plate 25, upper flange 11 and lower flange 12 use nonmetallic materials system
Into.
Described above is only some embodiments of the present invention, it is noted that for the ordinary skill people of the art
For member, under the premise without departing from the principles of the invention, some improvements and modifications can also be made, these improvements and modifications also should
It is considered as protection scope of the present invention.
Claims (19)
1. a kind of antenna measurement mounting bracket, it is characterised in that including support bar, the roll device on the support bar,
And the mounting platform for installing antenna to be measured is connected and is used for the roll device；The roll device includes support, roll
Axle and manual rotation component, the support are fixedly mounted on the support bar and offer axis hole in the horizontal direction, the horizontal stroke
Roller bearing is arranged in the axis hole, and one end of the roll axle connects the mounting platform, and the other end connects the manual rotation
Turn component, to be rotated under the drive of the manual rotation component and the mounting platform is done around the axis of the roll axle
Rotary motion.
2. antenna measurement mounting bracket according to claim 1, it is characterised in that the manual rotation component includes being used to make
The manual rotation component is relative to the alignment pin that the support is fixed.
3. antenna measurement mounting bracket according to claim 2, it is characterised in that the manual rotation component includes swivel plate
With the handle on the swivel plate, the handle includes the draw ring mounting seat being fixedly mounted with the swivel plate, and
The spring being pressurized all the time is provided with draw ring in the draw ring mounting seat, the draw ring mounting seat, the spring
One end and the positioning pin connection, the other end are connected to the inside of the draw ring mounting seat, make the draw ring mounting seat to described
Alignment pin applies pressure all the time.
4. antenna measurement mounting bracket according to claim 3, it is characterised in that the handle also includes latch, the drawing
Ring is pivotally connected by the latch and the alignment pin, and the draw ring mounting seat offers locating slot close to one end of draw ring,
The latch can pull out the alignment pin in the presence of the draw ring, so that the manual rotation component can be relative to described
Support rotates, and the latch is rotatably caught in the locating slot when being drawn out state.
5. antenna measurement mounting bracket according to claim 2, it is characterised in that close to the manual rotation on the support
One end of component is installed with the positioning hole for offering and being pressed into for the alignment pin on location-plate, the location-plate.
6. antenna measurement mounting bracket according to claim 5, it is characterised in that the positioning hole is described more provided with multiple
Individual positioning hole is around roll axle axle center circumference uniform distribution on the location-plate, and the multiple positioning hole is towards one end of alignment pin
Offer guide angle.
7. antenna measurement mounting bracket according to claim 1, it is characterised in that the roll device also includes being arranged on institute
State in axis hole and be used for the bearing for installing the roll axle.
8. antenna measurement mounting bracket according to claim 7, it is characterised in that the roll device also includes being used to limit
The bearing locating part that the bearing is axially moved along the roll axle.
9. antenna measurement mounting bracket according to claim 1, it is characterised in that the support bar is truncated cone-shaped support bar.
10. antenna measurement mounting bracket according to claim 1, it is characterised in that the two ends of the support bar are set respectively
There are upper flange and lower flange, the roll device is fixed on the supporting bar top by the upper flange, and the lower flange is used
It is connected in by the antenna measurement mounting bracket with test table.
11. antenna measurement mounting bracket according to claim 1, it is characterised in that the antenna measurement mounting bracket also includes
At least two blocks sleepers, the sleeper is installed on the mounting platform and for placing antenna to be measured.
12. antenna measurement mounting bracket according to claim 11, it is characterised in that be provided with limited block on the sleeper,
The stopper slot that bore is less than the limited block external diameter is offered on the mounting platform, the sleeper passes through the limited block interference
On the stopper slot.
13. antenna measurement mounting bracket according to claim 1, it is characterised in that the mounting platform hollow out is set with shape
Into multiple lightening holes.
14. the antenna measurement mounting bracket according to claim 1 or 13, it is characterised in that the antenna measurement mounting bracket is also
Including enhancing plate, the enhancing plate is arranged on the mounting platform and is used for the weight capacity for lifting the mounting platform.
15. antenna measurement mounting bracket according to claim 14, it is characterised in that the antenna measurement mounting bracket also includes
The connecting plate being fixedly connected with the enhancing plate and the roll axle.
16. antenna measurement mounting bracket according to claim 1, it is characterised in that being provided with the mounting platform is used for
The anti-skidding screens of fixed antenna.
17. antenna measurement mounting bracket according to claim 1, it is characterised in that being provided with the mounting platform is used for
The counterweight mounting hole of counter-balanced carriage is installed, a counter-balanced carriage is connected to the mounting platform, and counterweight by the counterweight mounting hole
Frame is used to place balancing weight.
18. antenna measurement mounting bracket according to claim 1, it is characterised in that the mounting platform, the support and institute
Support bar is stated to be made up of nonmetallic materials.
19. antenna measurement mounting bracket according to claim 18, it is characterised in that the support bar is by glass-reinforced plastic material system
Into.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710378596.2A CN107037273B (en) | 2017-05-25 | 2017-05-25 | Antenna test mounting frame |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710378596.2A CN107037273B (en) | 2017-05-25 | 2017-05-25 | Antenna test mounting frame |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107037273A true CN107037273A (en) | 2017-08-11 |
| CN107037273B CN107037273B (en) | 2023-07-25 |
Family
ID=59540676
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710378596.2A Active CN107037273B (en) | 2017-05-25 | 2017-05-25 | Antenna test mounting frame |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107037273B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109001543A (en) * | 2018-06-14 | 2018-12-14 | 京信通信系统（中国）有限公司 | Antenna measurement mounting rack |
| CN114200218A (en) * | 2021-11-10 | 2022-03-18 | 昆山浩兴电子科技有限公司 | Antenna performance test stabilising arrangement |
| CN115308447A (en) * | 2022-08-08 | 2022-11-08 | 北京中科睿信科技有限公司 | Mechanical scanning test fixture |
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| FR2534380A1 (en) * | 1982-10-08 | 1984-04-13 | Bolomey Jean Charles | Method and device for the rapid measurement of nearby fields |
| CN101105513A (en) * | 2007-06-27 | 2008-01-16 | 浙江大学 | Antenna radiation characteristics experimental device |
| JP2008064704A (en) * | 2006-09-11 | 2008-03-21 | Ntt Docomo Inc | Measuring object mounting device, and electromagnetic field characteristic measuring system |
| CN103457014A (en) * | 2012-05-28 | 2013-12-18 | 鸿富锦精密工业（深圳）有限公司 | Antenna support |
| KR101523222B1 (en) * | 2013-12-27 | 2015-05-28 | 주식회사 이레테크 | Electromagnetic measurement appratus for electric device |
| CN105158585A (en) * | 2015-08-26 | 2015-12-16 | 武汉虹信通信技术有限责任公司 | Long term evolution (LTE) antenna intelligent measurement system |
| CN206788257U (en) * | 2017-05-25 | 2017-12-22 | 京信通信系统（中国）有限公司 | A kind of antenna measurement mounting bracket |
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2017
- 2017-05-25 CN CN201710378596.2A patent/CN107037273B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2534380A1 (en) * | 1982-10-08 | 1984-04-13 | Bolomey Jean Charles | Method and device for the rapid measurement of nearby fields |
| JP2008064704A (en) * | 2006-09-11 | 2008-03-21 | Ntt Docomo Inc | Measuring object mounting device, and electromagnetic field characteristic measuring system |
| CN101105513A (en) * | 2007-06-27 | 2008-01-16 | 浙江大学 | Antenna radiation characteristics experimental device |
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| CN206788257U (en) * | 2017-05-25 | 2017-12-22 | 京信通信系统（中国）有限公司 | A kind of antenna measurement mounting bracket |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109001543A (en) * | 2018-06-14 | 2018-12-14 | 京信通信系统（中国）有限公司 | Antenna measurement mounting rack |
| CN114200218A (en) * | 2021-11-10 | 2022-03-18 | 昆山浩兴电子科技有限公司 | Antenna performance test stabilising arrangement |
| CN114200218B (en) * | 2021-11-10 | 2023-10-20 | 昆山浩兴电子科技有限公司 | Antenna performance test stabilising arrangement |
| CN115308447A (en) * | 2022-08-08 | 2022-11-08 | 北京中科睿信科技有限公司 | Mechanical scanning test fixture |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107037273B (en) | 2023-07-25 |
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Effective date of registration: 20200115 Address after: 510730 No. 6, layered Road, Guangzhou economic and Technological Development Zone, Guangdong Applicant after: COMBA TELECOM TECHNOLOGY (GUANGZHOU) Ltd. Address before: 510663 Guangzhou Science City, Guangdong Shenzhou Road, No. 10 Applicant before: COMBA TELECOM SYSTEMS (CHINA) Ltd. Applicant before: COMBA TELECOM TECHNOLOGY (GUANGZHOU) Ltd. Applicant before: COMBA TELECOM SYSTEMS (GUANGZHOU) Ltd. Applicant before: TIANJIN COMBA TELECOM SYSTEMS Ltd. |
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