CN208939141U - Antenna element, Anneta module and large scale array antenna - Google Patents
Antenna element, Anneta module and large scale array antenna Download PDFInfo
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- CN208939141U CN208939141U CN201821786751.0U CN201821786751U CN208939141U CN 208939141 U CN208939141 U CN 208939141U CN 201821786751 U CN201821786751 U CN 201821786751U CN 208939141 U CN208939141 U CN 208939141U
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Abstract
The utility model provides a kind of antenna element, it include: integrally formed nonmetal basal body, partition including body support plate and set on body support plate top surface, the top surface of body support plate is equipped with the first metal layer at least partly as feeding-network circuits layer, the bottom surface of body support plate is equipped with second metal layer, at least one side of partition is equipped with third metal layer；First feeder pillar, set on body support plate top surface and for supporting radiating element and being electrically connected radiating element and feeding-network circuits layer；Second feeder pillar, set on body support plate bottom surface and for is electrically connected be set to body support plate bottom calibration network；First feeder pillar and the second feeder pillar and nonmetal basal body pass through integral forming process one entirety of formation.The antenna unit structure is simple and compact, while realizing that lightweight is highly integrated, goes back that homogeneity of product is preferable, is conducive to the electric property for promoting antenna.The utility model additionally provides a kind of Anneta module including above-mentioned antenna element and large scale array antenna.
Description
Technical field
The utility model relates to mobile communication technology field, it is related to a kind of antenna element, Anneta module and large scale array
Antenna.
Background technique
With the fast development of mobile communication technology and application, about the 5th third-generation mobile communication technology (foreign language is abbreviated as 5G)
Examination commercial stage is entered.
Currently, the 5G antenna scheme that the prior art proposes, antenna element generally includes metallic matrix bottom plate and is set to gold
Belong to the metal partion (metp) on body support plate.Wherein, metallic matrix bottom plate is formed frequently with die cast metal or sheet metal process, and partition is usual
It is formed using die cast metal, aluminum profile pultrusion or sheet metal process, to meet the antenna pair based on 5G intensive HF array on a large scale
The demand of arrangement space multiplicity, however such structure has the following drawbacks in engineering practice: first is that antenna element is heavier, from
And antenna machine system is caused to be difficult to realize light-weight design；Second is that the body support plate size of 5G intensive HF array on a large scale is past
It is past larger, during metallic matrix bottom plate is integrally formed, in order to improve the consistency of product, the thickness of metallic matrix bottom plate
It often needs to thicken, antenna element weight thus will be further aggravated；Third is that metal separator can only be fixed on metal by screw
It is fixedly connected on body support plate or using welding/die cast metal technique with metallic matrix bottom plate, is on the one hand answered in 5G high band
Under background, adopts the mode being screwed and be difficult to meet requirement of the 5G high band antenna to radiation boundary gap, another party
Any one connection type in no matter above-mentioned three kinds of face, the Insertion Loss that all there is 5G antenna is higher, intermodulation hidden danger increases, consistency
Problem poor and that assembly is complicated.
In addition, the 5G antenna scheme that the prior art proposes, feeding network mostly use PCB form, feeding network is usually adopted
Be screwed on connection and body support plate, radiating element generallys use die cast metal, metal plate or PCB oscillator, radiating element with
It typically directly welds between feeding network or is welded to connect by coaxial cable, not only assembly is complicated, and production cost is higher, can also
With more solder joint, equally it is difficult to meet filter with low insertion loss, the low index request for mutually reconciling high consistency.
It can be seen that the 5G antenna scheme that the prior art proposes is there are still more technical problem, in face of the 5G industry whole world into
How the quickening of journey realizes antenna lightweight, while simplifying antenna structure, promotes antenna performance index, has become and be increasingly urgent to.
Utility model content
Based on this, the utility model provides a kind of antenna element, Anneta module and large scale array antenna, it is intended to realize
The lightweight of antenna, while simplifying antenna structure, promote antenna performance.
In order to solve the above-mentioned technical problem, the utility model antenna element the technical solution adopted is that:
A kind of antenna element, comprising:
Integrally formed nonmetal basal body, the nonmetal basal body include body support plate and be set to described matrix plate top surface
Partition, the top surface of described matrix bottom plate is equipped with the first metal layer, and the first metal layer is at least partly as feeding network electricity
Road floor, the bottom surface of described matrix bottom plate, which is equipped with, enables described matrix bottom plate as the second metal layer of reflecting plate, the partition
At least one side is equipped with the third metal layer for enabling the partition as radiation boundary；
First feeder pillar, first feeder pillar are set to the top surface of described matrix bottom plate, and first feeder pillar is for branch
It holds radiating element and is electrically connected the radiating element and the feeding-network circuits layer；
Second feeder pillar, second feeder pillar are set to the bottom surface of described matrix bottom plate and for being electrically connected set on described
The calibration network of body support plate bottom；
First feeder pillar and second feeder pillar and the nonmetal basal body pass through integral forming process formation one
A entirety.
Further, first feeder pillar and/or second feeder pillar include nonmetallic column and be set to the non-gold
The 4th metal layer for belonging to outer surface of column passes through the 4th metal layer between the radiating element and the feeding-network circuits layer
It is electrically connected, the nonmetallic column and the nonmetal basal body integrated injection molding.
Further, first feeder pillar and/or second feeder pillar are metal column, the nonmetal basal body and institute
Metal column is stated to be integrally formed and be mutually permanently connected together by Shooting Technique.
Further, second feeder pillar includes for the first column with the electric connection of the circuit layer of the calibration network
Body and the second cylinder for connecting with the stratum of the calibration network, first cylinder are set with second cylinder interval
It sets.
Further, the radiating element includes non-metal base plate and the fifth metal set on the non-metal base plate surface
Layer, the radiating element are electrically connected by the fifth metal layer and first feeder pillar.
Further, the radiating element is made of metal material or pcb board.
Further, the radiating element at least there are two, first feeder pillar at least there are two, each radiation is single
Member is respectively arranged on different first feeder pillars；
The feeding-network circuits layer includes power-devided circuit, passes through the function point electricity between at least two radiating elements
Road connection is to one submatrix of composition.
Further, the radiating element is equipped with mounting-positioning holes, and it is small that the top of first feeder pillar is equipped with size
In first feeder pillar and can with the mounting-positioning holes cooperate positioning column.
Anneta module provided by the utility model the technical solution adopted is that:
A kind of Anneta module, including multiple above-mentioned antenna elements, multiple antenna elements nonmetal basal body one at
Type, multiple antenna elements are in array distribution.
Large scale array antenna provided by the utility model the technical solution adopted is that:
A kind of large scale array antenna, including above-mentioned Anneta module.
Based on the above-mentioned technical proposal, the antenna element of the utility model, Anneta module and large scale array antenna, relative to
The prior art at least has the advantages that
The antenna element, Anneta module and large scale array antenna of the utility model, by using body support plate and partition
Integrally formed nonmetal basal body, and make first feeder pillar and second feeder pillar and the nonmetal basal body by one
Body formed technique forms an entirety, it can be achieved that reflecting plate, radiation boundary and feeding network it is highly integrated, substantially alleviate day
The weight of line, and can greatly simplify processing and fabricating and assemble flow, production cost is reduced, overall structure is simple and compact, product
Consistency is good, is conducive to reach 5G high band antenna to the high standard of Product Precision, reduction Insertion Loss, reduction intermodulation hidden danger, makes day
The electric property of line machine system is obviously improved；In addition, the dielectric layer also using body support plate as feeding network, one
The first feeder pillar and the second feeder pillar of body easily realize radiating element and connect with the feed of calibration network, relative to biography
For the structure using balun electric feedback ring of system, realization low Section Design is also helped, meets 5G antenna for minimizing more
High request is suitable for extensive commercial.
Detailed description of the invention
Fig. 1 is a kind of exploded front structural schematic diagram of antenna element provided by the embodiment of the utility model；
Fig. 2 is that the back of antenna element shown in Fig. 1 regards decomposition texture schematic diagram；
Fig. 3 is the partial structural diagram of the Anneta module of antenna element shown in application drawing 1；
Fig. 4 is the exploded front structural schematic diagram of the Anneta module of antenna element shown in application drawing 1；
Fig. 5 is that the back of Anneta module shown in Fig. 4 regards decomposition texture schematic diagram；
Fig. 6 is the axis surveys view of Anneta module shown in Fig. 4 and Fig. 5；
Description of symbols:
100- radiating element；101- mounting-positioning holes；200- nonmetal basal body；210- body support plate；220- partition；310-
First feeder pillar；311- positioning column；The second feeder pillar of 320-；The first cylinder of 320a-；The second cylinder of 320b-；400- feeding network
Circuit layer；500- calibration network；The first pad of 501-；The second pad of 502-.
Specific embodiment
In order to which the technical problems to be solved in the utility model, technical solution and beneficial effect is more clearly understood, below
In conjunction with accompanying drawings and embodiments, the present invention will be further described in detail.It should be appreciated that specific implementation described herein
Example is only used to explain the utility model, is not used to limit the utility model.
It should be noted that it can directly exist when element is referred to as on " being fixed on " or " being set to " another element
On another element or it may be simultaneously present centering elements.When an element is known as " connection " another element, it can
To be to be directly connected to another element or may be simultaneously present centering elements.
In the description of the present invention, it should be understood that term " first ", " second " are used for description purposes only, and
It cannot be understood as indicating or implying relative importance or implicitly indicate the quantity of indicated technical characteristic.It defines as a result,
The feature of " first ", " second " can explicitly or implicitly include one or more of the features.In the utility model
In description, the meaning of " plurality " is two or more, unless otherwise specifically defined.
It is only each other relatively generally it should also be noted that, the positional terms such as upper and lower, top, bottom, side in following embodiment
It reads or be to refer to the normal operating condition of product, and should not be regarded as restrictive.
Referring to Figures 1 and 2, the utility model embodiment provides a kind of antenna element, comprising: integrally formed nonmetallic
Matrix 200, the nonmetal basal body 200 include body support plate 210 and the partition 220 set on 210 top surface of body support plate, body support plate
210 top surface is equipped with the first metal layer at least partly as feeding-network circuits layer 400, and the bottom surface of body support plate 210 is equipped with
Enable body support plate 210 as the second metal layer of reflecting plate, at least one side of partition 220, which is equipped with, enables partition 220 to make
For the third metal layer for radiating boundary；First feeder pillar 310, first feeder pillar 310 are set to the top surface of body support plate 210, the
One feeder pillar 310 is for supporting radiating element 100 and being electrically connected radiating element 100 and feeding-network circuits layer 400；Second feedback
Electric column 320, second feeder pillar 320 are set to the bottom surface of body support plate 210 and are set to 210 bottom of body support plate for being electrically connected
Calibration network 500；First feeder pillar 310 and the second feeder pillar 320 are formed with nonmetal basal body 200 by integral forming process
One entirety.
Referring to Fig. 3 to Fig. 6, the utility model embodiment additionally provides a kind of Anneta module, including multiple above-mentioned antenna lists
The nonmetal basal body 200 of member, mutiple antennas unit is integrally formed, and mutiple antennas unit is in array distribution.
Above-mentioned antenna element and Anneta module, by using body support plate 210 and the integrally formed non-metal base of partition 220
Body 200, and the first feeder pillar 310 and the second feeder pillar 320 is made to form one by integral forming process with nonmetal basal body 200
It is whole, it can be achieved that reflecting plate, radiation boundary and feeding network it is highly integrated, substantially alleviate the weight of antenna, and can be greatly
Simplification processing and fabricating and assemble flow, reduce production cost, overall structure is simple and compact, good product consistency, is conducive to reach
To 5G high band antenna to the high standard of Product Precision, reduction Insertion Loss, reduction intermodulation hidden danger, make the electrical resistance of antenna machine system
It can be obviously improved；In addition, the dielectric layer also using body support plate 210 as feeding network, integrated first feed
Column 310 easily realizes radiating element 100 with the second feeder pillar 320 and connects with the feed of calibration network 500, relative to tradition
The structure using balun electric feedback ring for, also help realization low Section Design, meet 5G antenna for minimize it is higher
It is required that being suitable for extensive commercial.
Referring to Fig. 2, in practical application, the second feeder pillar 320 includes electrically connecting for the circuit layer with calibration network 500
The the first cylinder 320a connect and the second cylinder 320b for the stratum grounding connection with calibration network 500, the first cylinder
320a and the second interval cylinder 320b are arranged.First cylinder 320a and the second cylinder 320b can be integrated with body support plate 210
Moulding process forms an entirety, integrated to further increase.It is corresponding, it is equipped on calibration network 500 for connecting the
One cylinder 320a is with the first pad 501 for feeding and for the second pad 502 of ground connection.Specifically in the present embodiment, the second column
There are two body 320b, is set on calibration network 500 there are two the second pad 502, each second pad 502 and each second cylinder 320b
It corresponds.
In some embodiments, in order to be further simplified technique, above-mentioned first feeder pillar 310 may include nonmetallic column and set
In the 4th metal layer of nonmetallic outer surface of column, pass through the first feeder pillar between radiating element 100 and feeding-network circuits layer 400
310 the 4th metal layer is electrically connected, nonmetallic column and 200 integrated injection molding of nonmetal basal body.Similarly, above-mentioned second feed
Column 320 may also comprise nonmetallic column and the 4th metal layer set on nonmetallic outer surface of column, specifically in the present embodiment as the
The the first cylinder 320a and the second cylinder 320b of two feeder pillars 320 may each comprise nonmetallic column and be set to nonmetallic outer surface of column
The 4th metal layer, in this way, between radiating element 100 and the circuit layer of calibration network 500 pass through the first cylinder 320a the 4th
Metal layer is electrically connected, and passes through the 4th metal layer of the second cylinder 320b between the stratum and second metal layer of calibration network 500
It is electrically connected, nonmetallic column and 200 integrated injection molding of nonmetal basal body；In this case, it should be appreciated that in order to realize
The electric connection of feeding-network circuits layer 400 in the first metal layer and calibration network 500 is further preferably set on body support plate 210
There is metallization VIA, to realize the electric connection of the 4th metal layer of feeding-network circuits layer 400 and the first cylinder 320a.
In some embodiments, above-mentioned first feeder pillar 310 can also use metal column, nonmetal basal body 200 and metal
Column is integrally formed by Shooting Technique and is mutually permanently connected together.Similarly, above-mentioned second feeder pillar 320 can also be using gold
Belong to column, nonmetal basal body 200 is shaped in the bottom of metal column by Shooting Technique and is mutually permanently connected together.Example
Such as, in Shooting Technique, the metal column as the metal column of the first feeder pillar 310 and as the second feeder pillar 320 can be set
In injection mold, to be fixed into an entirety with metal column after making 200 injection molding of nonmetal basal body.Such structure,
Fabrication processing is simple, is easy to produce in enormous quantities, can not only make the first feeder pillar 310 and the second feeder pillar 320 with it is nonmetallic
Bonding strength is preferable between matrix 200, can also easily reach preferable assembly precision, has preferable consistency.In portion
Divide in embodiment, above-mentioned body support plate 210 can be also fixed together by hot melting process and metal column；Make full use of non-gold
The plasticity of category equally can conveniently realize being reliably connected for metal column and body support plate 210.
In some embodiments, above-mentioned radiating element 100 can use metal material die casting or the integrally formed gold of metal plate
Belong to radiation fin or is made of pcb board.
In some embodiments, above-mentioned radiating element 100 includes non-metal base plate and set on the of non-metal base plate surface
Five metal layers, radiating element 100 are electrically connected by fifth metal layer and the first feeder pillar 310.It can reduce radiating element in this way
100 weight improves the precision of radiating element 100, simplifies the structure of radiating element 100, easy to process, to further realizing day
The lightweight of line has better effect.
The preferred integrated injection molding of the non-metal base plate of above-mentioned nonmetal basal body 200 and radiating element 100, specifically may be used
It is integrally formed using nonmetallic materials such as resin, plastics by Shooting Technique.Above-mentioned the first metal layer, second metal layer, third
The metals such as electroplating surface, LDS (laser direct forming) technique, printing can be used in metal layer, the 4th metal layer and fifth metal layer
Chemical industry skill is realized；The material of each metal layer is both preferably copper.
Referring to Fig.1, Fig. 3, Fig. 4 and Fig. 6, in some embodiments, the antenna element may include at least two radiating elements
100 and at least two first feeder pillars 310, each radiating element 100 be respectively arranged on the first different feeder pillars 310；Transmission network
Network circuit layer 400 includes power-devided circuit, connects to form a submatrix by power-devided circuit between multiple radiating elements 100.
Specifically in the present embodiment, each submatrix may include two or three or four or six equal number of radiating elements 100, and
It should be understood that being spaced setting between each radiating element 100 of each submatrix.By power-devided circuit by multiple radiating elements
100 are merged into a submatrix, can reduce connector quantity, reduce cost, the Space Layout Structure of radiating element 100 and feeding network
It is more compact, under the premise of 5G large scale array antenna array space is limited, actual deployment difficulty can be greatly reduced.
Referring to Fig.1, Fig. 3 and Fig. 4, specifically in the present embodiment, each radiating element 100 is preferably by four the first feeder pillars
310 supports, four the first feeder pillars 310 are uniformly distributed in the bottom radiating element 100 of radiating element 100, in favor of improving day
The stability and reliability of line cellular construction.
Referring to Fig.1, Fig. 3, Fig. 4 and Fig. 6, as a preferred embodiment of the utility model, on above-mentioned radiating element 100
Equipped with mounting-positioning holes 101, the top of the first feeder pillar 310 is equipped with size less than the first feeder pillar 310 and can position with installation
The positioning column 311 that hole 101 cooperates.In this way, can easily not only realize the reliable installation of radiating element 100, may also be advantageous for mentioning
High assembly precision, so that the consistency of antenna is more preferable.When above-mentioned first feeder pillar 310 uses nonmetallic column and non-metal base
When 200 integrated injection molding of body, above-mentioned positioning column 311 using nonmetallic column and 200 one of above-mentioned nonmetal basal body it is also preferred that infused
It is moulded into type.
As a preferred embodiment of the utility model, referring to Fig.1, Fig. 3 and Fig. 6, in the orthographic projection of body support plate 210
On face, radiating element 100 is included within the scope of the setting of partition 220.In practical application, can be arranged in the surrounding of each submatrix
Partition 220.This can play better isolation effect for 5G high band antenna, reduce the mutual coupling between each antenna submatrix,
Electric property is more excellent.
The utility model embodiment additionally provides a kind of large scale array antenna, including above-mentioned Anneta module.It should be understood that
, may include multiple Anneta modules made respectively in large scale array antenna, mutiple antennas module can pass through spelling
It connects and is assembled in antenna house and is in array distribution, to further increase the convenience of assembling, and reduce manufacture difficulty.
Above-mentioned large scale array antenna, due to being based on same design with above-mentioned antenna element and Anneta module embodiment,
Bring technical effect is identical as the utility model antenna element and Anneta module embodiment, and it is practical new that particular content can be found in this
Narration in type antenna element and Anneta module embodiment, details are not described herein again.
It should be noted that above-mentioned antenna element and Anneta module and being not limited to the use of the large scale array of 5G mobile communication
Antenna, it can also be used in the antenna of 2G, 3G, 4G mobile communication.
The above is only the preferred embodiments of the present utility model only, is not intended to limit the utility model, all practical at this
Made any modifications, equivalent replacements, and improvements etc., should be included in the guarantor of the utility model within novel spirit and principle
Within the scope of shield.
Claims (10)
1. a kind of antenna element characterized by comprising
Integrally formed nonmetal basal body, the nonmetal basal body include body support plate and set on described matrix plate top surface every
Plate, the top surface of described matrix bottom plate are equipped with the first metal layer, the first metal layer at least partly as feeding-network circuits layer,
The bottom surface of described matrix bottom plate, which is equipped with, enables described matrix bottom plate as the second metal layer of reflecting plate, and at least the one of the partition
A side is equipped with the third metal layer for enabling the partition as radiation boundary；
First feeder pillar, first feeder pillar are set to the top surface of described matrix bottom plate, and first feeder pillar is for supporting spoke
It penetrates unit and is electrically connected the radiating element and the feeding-network circuits layer；
Second feeder pillar, second feeder pillar are set to the bottom surface of described matrix bottom plate and are set to described matrix for being electrically connected
The calibration network of bottom base plate；
First feeder pillar and second feeder pillar and the nonmetal basal body are whole by integral forming process formation one
Body.
2. antenna element according to claim 1, which is characterized in that first feeder pillar and/or second feed
Column includes nonmetallic column and the 4th metal layer set on the nonmetallic outer surface of column, the radiating element and the feeding network
Be electrically connected between circuit layer by the 4th metal layer, the nonmetallic column and the nonmetal basal body integrated injection molding at
Type.
3. antenna element according to claim 1, which is characterized in that first feeder pillar and/or second feed
Column is metal column, and the nonmetal basal body and the metal column are integrally formed by Shooting Technique and are mutually permanently connected one
It rises.
4. antenna element according to claim 1, which is characterized in that second feeder pillar include for the calibration
The first cylinder that the circuit layer of network is electrically connected and the second cylinder for the stratum grounding connection with the calibration network,
First cylinder and second cylinder interval are arranged.
5. antenna element according to claim 1, which is characterized in that the radiating element includes non-metal base plate and is set to
The fifth metal layer of the non-metal base plate surface, the radiating element pass through the fifth metal layer and first feeder pillar
It is electrically connected.
6. antenna element according to claim 1, which is characterized in that the radiating element is by metal material or pcb board system
At.
7. antenna element according to claim 1, which is characterized in that
The radiating element at least there are two, first feeder pillar at least there are two, each radiating element is respectively arranged on not
On same first feeder pillar；
The feeding-network circuits layer includes power-devided circuit, is connected between at least two radiating elements by the power-devided circuit
It connects to one submatrix of composition.
8. antenna element according to claim 1, which is characterized in that the radiating element is equipped with mounting-positioning holes, institute
The top for stating the first feeder pillar is equipped with the positioning column that size is less than first feeder pillar and can cooperate with the mounting-positioning holes.
9. a kind of Anneta module, which is characterized in that including multiple antenna elements as claimed in any of claims 1 to 8 in one of claims,
The non-metal base body by integral forming of multiple antenna elements, multiple antenna elements are in array distribution.
10. a kind of large scale array antenna, which is characterized in that including Anneta module as claimed in claim 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821786751.0U CN208939141U (en) | 2018-10-31 | 2018-10-31 | Antenna element, Anneta module and large scale array antenna |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821786751.0U CN208939141U (en) | 2018-10-31 | 2018-10-31 | Antenna element, Anneta module and large scale array antenna |
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| Publication Number | Publication Date |
|---|---|
| CN208939141U true CN208939141U (en) | 2019-06-04 |
Family
ID=66726683
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| CN201821786751.0U Active CN208939141U (en) | 2018-10-31 | 2018-10-31 | Antenna element, Anneta module and large scale array antenna |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109286073A (en) * | 2018-10-31 | 2019-01-29 | 京信通信系统（中国）有限公司 | Antenna element, Anneta module and large scale array antenna |
| CN112290194A (en) * | 2020-09-17 | 2021-01-29 | 深圳市信维通信股份有限公司 | Integrated small base station antenna |
| WO2021135274A1 (en) * | 2019-12-31 | 2021-07-08 | 京信通信技术(广州)有限公司 | Large-scale array antenna and antenna module |
-
2018
- 2018-10-31 CN CN201821786751.0U patent/CN208939141U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109286073A (en) * | 2018-10-31 | 2019-01-29 | 京信通信系统（中国）有限公司 | Antenna element, Anneta module and large scale array antenna |
| WO2020087933A1 (en) * | 2018-10-31 | 2020-05-07 | 京信通信技术(广州)有限公司 | Antenna unit, antenna module and large-scale array antenna |
| WO2021135274A1 (en) * | 2019-12-31 | 2021-07-08 | 京信通信技术(广州)有限公司 | Large-scale array antenna and antenna module |
| CN112290194A (en) * | 2020-09-17 | 2021-01-29 | 深圳市信维通信股份有限公司 | Integrated small base station antenna |
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Effective date of registration: 20200225 Address after: 510730 No. 6, layered Road, Guangzhou economic and Technological Development Zone, Guangdong Patentee after: COMBA TELECOM TECHNOLOGY (GUANGZHOU) Ltd. Address before: 510663 Shenzhou Road 10, Guangzhou Science City, Guangzhou economic and Technological Development Zone, Guangzhou, Guangdong Co-patentee before: COMBA TELECOM TECHNOLOGY (GUANGZHOU) Ltd. Patentee before: Comba Telecom System (China) Ltd. Co-patentee before: COMBA TELECOM SYSTEMS (GUANGZHOU) Ltd. Co-patentee before: TIANJIN COMBA TELECOM SYSTEMS Ltd. |
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