CN209329161U - Phase shift feeder equipment and antenna for base station - Google Patents
Phase shift feeder equipment and antenna for base station Download PDFInfo
- Publication number
- CN209329161U CN209329161U CN201920167367.0U CN201920167367U CN209329161U CN 209329161 U CN209329161 U CN 209329161U CN 201920167367 U CN201920167367 U CN 201920167367U CN 209329161 U CN209329161 U CN 209329161U
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- Prior art keywords
- metal cavity
- phase shift
- phase
- feeder equipment
- feed
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Abstract
The utility model relates to a kind of phase shift feeder equipments, including metal cavity, phase-shift circuit and feeding network plate.Metal cavity and substrate mount, and realize and by the side wall of metal cavity and ground pad welding being arranged altogether for metal cavity and feeding network plate.Therefore, metal cavity is mutually mounted with feeding network plate can reduce thickness, and connect without additional fasteners.Moreover, by evacuation window signal terminal can be drawn along the vertical direction from inside, phase-shift circuit is electrically connected with feeder line, therefore avoids the side cabling from phase shift feeder equipment, it is more compact into phase shift feeder equipment is laid out.Therefore, above-mentioned phase shift feeder equipment volume reduces, structure simplifies, and is advantageously implemented the miniaturization of antenna for base station.In addition, the utility model also provides a kind of antenna for base station.
Description
Technical field
The utility model relates to wireless communication technique field, in particular to a kind of phase shift feeder equipment and antenna for base station.
Background technique
As antenna technology develops, miniature antenna becomes the development trend of antenna for base station.Phase shift feeder equipment is base station
The core element of antenna, electric signal enter in corresponding antenna channels after carrying out function point, phase shift processing by phase shift feeder equipment,
Realize signal radiation.
Currently, phase shift feeder equipment is generally composed of phase shifter and feeding network plate two individual components.And
And phase shifter needs between the feeder line of feeding network plate, to be realized and be fed by feed cable.Therefore, processing phase shift feedback
It needs to be arranged coaxial cable when electric installation and carries out weld, to will cause the becoming large-sized of phase shift feeder equipment, weight
It lays particular stress on, and then is unfavorable for the miniaturization of antenna for base station.
Utility model content
Based on this, it is necessary to aiming at the problem that existing phase shift feeder equipment is unfavorable for antenna for base station miniaturization, provide one kind
Conducive to the phase shift feeder equipment for realizing antenna for base station miniaturization.
A kind of phase shift feeder equipment, comprising:
Metal cavity, the part of side wall offer the evacuation window being connected to inside the metal cavity；
Phase-shift circuit is contained in the metal cavity, and the phase-shift circuit has multiple signal terminals；And
Feeding network plate including substrate, is formed in the feeder line and ground plane of the substrate opposite sides, the substrate
Side be additionally provided with the ground pad being electrically connected with the ground plane；
Wherein, the side wall that the metal cavity offers the evacuation window is attached at the substrate and is provided with the ground connection weldering
The surface of disk is simultaneously welded with the ground pad, and the multiple signal terminal is electrically connected through the evacuation window with the feeder line
It connects.
The wall outer surface that the metal cavity offers the evacuation window in one of the embodiments, is plane.
The substrate offers multiple power feed holes through the substrate in one of the embodiments, and each described
Power feed hole is provided with the feed pad being electrically connected with the feeder line, the signal backwards to the edge of the metal cavity side
Terminal is electrically connected through the power feed hole with the feed pad.
Phase-shift circuit position corresponding with the multiple power feed hole is formed with multiple in one of the embodiments,
Foot, the multiple signal terminal are located on the multiple stabilizer blade, and the stabilizer blade is arranged in the evacuation window and the feed
The welding of feed pad described in Kong Bingyu.
The phase shift feeder equipment further includes the feed wire for being arranged in the power feed hole in one of the embodiments,
One end of the feed wire and the signal terminal weld, and the other end and the feed pad are welded.
The phase-shift circuit is PCB or cubic metal characters or patterns structure in one of the embodiments, and the feed wire is metal
Stub, metallic conductor piece or PCB circuit board.
One end of the feed wire is formed with limited cap in one of the embodiments, opens up on the signal terminal
There is through-hole, the feed wire is arranged in the through-hole and abuts the limited cap and the edge of the through-hole.
The metal cavity side wall opposite with the evacuation window offers and the metal in one of the embodiments,
The handle hole of inside cavity connection.
The ground plane is located at the substrate towards the side of the metal cavity in one of the embodiments, described
Feeder line is located at the substrate and is integrally formed backwards to the side of the metal cavity, the ground pad and the ground plane；
Alternatively, the feeder line is located at the substrate towards the side of the metal cavity, the ground plane is located at institute
Substrate is stated backwards to the side of the metal cavity, the ground plane is electrically connected by metallization VIA with the ground pad.
Above-mentioned phase shift feeder equipment, metal cavity and substrate mount, and by by the side wall and ground pad of metal cavity
It welds and realizes being arranged totally for metal cavity and feeding network plate.Therefore, metal cavity mutually mounts with feeding network plate and can subtract
Small thickness, and connected without additional fasteners.Moreover, signal terminal can be drawn along the vertical direction from inside by evacuation window, with
Phase-shift circuit is electrically connected with feeder line, therefore avoids the side cabling from phase shift feeder equipment, into making phase shift feeder equipment
It is laid out more compact.Therefore, above-mentioned phase shift feeder equipment volume reduces, structure simplifies, and is advantageously implemented the small-sized of antenna for base station
Change.
A kind of antenna for base station, including the phase shift feeder equipment as described in any one of above preferred embodiment.
Detailed description of the invention
Fig. 1 is the transverse sectional view of phase shift feeder equipment in the utility model embodiment；
Fig. 2 is the structural schematic diagram of metal cavity in phase shift feeder equipment shown in Fig. 1；
Fig. 3 figure is the surface texture schematic diagram of feeding network plate in phase shift feeder equipment shown in Fig. 1；
Fig. 4 is the structural schematic diagram of phase shift feeder equipment in another embodiment of the utility model；
Fig. 5 is the surface texture schematic diagram of feeding network plate in phase shift feeder equipment shown in Fig. 4.
Specific embodiment
The utility model is more fully retouched below with reference to relevant drawings for the ease of understanding the utility model,
It states.The preferred embodiment of the utility model is given in attached drawing.But the utility model can come in many different forms
It realizes, however it is not limited to embodiment described herein.On the contrary, purpose of providing these embodiments is makes to the utility model
The understanding of disclosure is more thorough and comprehensive.
It should be noted that it can directly on the other element when element is referred to as " being fixed on " another element
Or there may also be elements placed in the middle.When an element is considered as " connection " another element, it, which can be, is directly connected to
To another element or it may be simultaneously present centering elements.Term as used herein " vertical ", " horizontal ", " left side ",
" right side " and similar statement are for illustrative purposes only.
Unless otherwise defined, all technical and scientific terms used herein are led with the technology for belonging to the utility model
The normally understood meaning of the technical staff in domain is identical.Terminology used in the description of the utility model herein only be
The purpose of description specific embodiment, it is not intended that in limitation the utility model.Term " and or " used herein includes
Any and all combinations of one or more related listed items.
The utility model provides a kind of antenna for base station and phase shift feeder equipment, which includes phase shift feed dress
It sets.Moreover, antenna for base station generally further includes multiple radiating elements, multiple output ports of phase shift feeder equipment and multiple radiation are single
First communication connection forms mutiple antennas channel.After phase shift feeder equipment carries out function point, phase shift to electric signal, so that out of phase
Signal is radiated through multiple radiating elements respectively.
Fig. 1 and Fig. 2 is please referred to, the phase shift feeder equipment 100 in the utility model preferred embodiment includes metal cavity
110, phase-shift circuit 120 and feeding network plate 130.
Metal cavity 110 is hollow cavity body structure.Metal cavity 110 is general elongated, and cross section can be in square
Shape, triangle, circle etc..Wherein, the part of 110 side wall of metal cavity offers the evacuation being connected to inside metal cavity 110
Window 111.The evacuation window 111 can be that multiple areas are smaller, are separated from each other and spaced round, rectangular through-hole, can also be
One biggish bar shaped groove of area.
Phase-shift circuit 120 is installed in metal cavity 110, and phase-shift circuit 120 has multiple signal terminal (not shown).Letter
Number terminal is for realizing the input and output of electric signal, and according to the difference of application scenarios, the quantity of signal terminal can correspond to adjustment.
The circuit form of phase-shift circuit 120 can be pcb board structure, cubic metal characters or patterns structure, strip lines configuration or microstrip line construction etc..
In one embodiment, window 111 is avoided as bar shaped groove, and the width of the width of bar shaped groove and phase-shift circuit 120
Degree matches.One end of phase-shift circuit 120 from bar shaped groove stretch out and with the bar shaped groove clamping, with realize limit.
In specific the present embodiment, the circuit form of phase-shift circuit 120 is pcb board structure or is made using prior art
Cubic metal characters or patterns structure.Moreover, the installation for the ease of phase-shift circuit 120 is fixed, the side wall of metal cavity 110 offers fixation
Card slot 113, by 120 clamping of phase-shift circuit.
The major function of phase-shift circuit 120 is to realize the phase change of electric signal, cooperatively forms phase shift with metal cavity 110
Device module.According to the difference of phase-shift theory, medium slidingtype phase shifter and conductor slidingtype phase shifter can be divided into.Since medium is sliding
Dynamic formula phase shifter has the advantages such as compact-sized, Intermodulation Interference is small, therefore is also realized by the way of medium sliding in the present embodiment
Phase shift.Therefore, phase shift feeder equipment 100 further includes phase shift dielectric-slab 140.Phase shift dielectric-slab 140 is slideably contained in metal
It is oppositely arranged in cavity 110 and with phase-shift circuit 120.By sliding phase shift dielectric-slab 140, can be changed in phase-shift circuit 120
Electrical length, so that each signal terminal realizes the difference of output phase.
Also referring to Fig. 3, feeding network plate 130 includes substrate 131, ground plane 133 and feeder line 135.Substrate 131
Generally formed by the higher material of dielectric constant；Ground plane 133, which can be, is formed in substrate 131 by modes such as plated film, printings
The metal layer on surface；Feeder line 135 can be strip line or microstrip line construction, can also be the PCB circuit with 131 one of substrate
Structure；Feeder line 135 is generally made of power-devided circuit, filter circuit part.Ground plane 133 is formed in feeder line 135
The opposite two sides of substrate 131.Moreover, insulation set between ground plane 133 and feeder line 135, ground plane 133 constitutes feed line
The bottom on road 135.
Further, the side of substrate 131 is additionally provided with the ground pad 1332 being electrically connected with ground plane 133.Wire chamber
The side wall that body 110 offers evacuation window 111 is attached at surface and and the ground pad that substrate 131 is provided with ground pad 1332
1332 welding.
That is, ground pad 1332 will be abutted with the side wall of metal cavity 110.Specifically, (the surface SMT can be used
Mounting technology), the techniques such as Reflow Soldering metal cavity 110 and 1332 phase of ground pad are welded, thus realize phase shifter module with
Feeding network plate 130 integrates.Metal cavity 110 and ground pad 1332 weld, and can make metal cavity 110 and feeding network
It realizes between plate 130 and is arranged altogether.Moreover, welding can also play fixed function, so there is no need to use additional fastener to connect gold
Belong to cavity 110 and feeding network plate 130, to be conducive to reduce volume and weight.Moreover, phase shifter module and feeding network plate
130 are integrated in a manner of being layered on top of each other, so that compact layout.
In the present embodiment, it is plane that metal cavity 110, which offers the wall outer surface of evacuation window 111,.At this point, wire chamber
The side wall of body 110 can be bonded with the surface of substrate 131 it is tighter, thus avoid because fitting after loosen due to influence metal cavity 110 with
The reliability that ground pad 1332 connects.Moreover, can also prevent gap occur between metal cavity 110 and substrate 131, so that
The more compact structure of phase shift feeder equipment 100.
It should be pointed out that according to the difference of antenna for base station integrated complex degree, each feeding network plate 130 can be corresponded to
Multiple phase shifter modules.That is, multiple phase-shift circuits 120 and multiple metal cavities 110 can be integrated on a feeding network plate 130.
Wherein, a phase-shift circuit 120 and a metal cavity 110 constitute a pair of of phase shifter module, and each phase shifter module and feedback
Installation relation between electric network plate 130 is identical.
In addition, multiple signal terminals are electrically connected electrical connection with feeder line 135 through evacuation window 111.Specifically, signal terminal
It can be connect by welding, conducting wire between feeder line 135, the modes such as grafting realize electrical connection.The extended evacuation of signal terminal
Window 111 can also be drawn signal terminal by the conducting wire being arranged in evacuation window 111.It therefore, can be from interior by evacuation window 111
Signal terminal is drawn in portion along the vertical direction, is electrically connected between phase-shift circuit 120 and feeder line 135 with realizing, thus avoid from
The side cabling of phase shift feeder equipment 100, it is more compact into phase shift feeder equipment 100 is laid out.
Wherein, being arranged altogether due to metal cavity 110 and feeding network plate 130, and signal terminal and feeder line
135 electrical connections, therefore play the role of being equivalent to traditional coaxial feeder.Therefore, phase shift feeder equipment 100 is without coaxial
Feeder line can realize that feeder line 135 feeds phase-shift circuit 120, to further be conducive to the miniaturization of antenna for base station.
For existing phase shifter, due to realizing phase-shift circuit 120 and feeder line 135 without coaxial feeder
Electrical connection.Therefore, on the outer wall of metal cavity 110 without setting installation coaxial feeder wiring groove, while avoid because
Coaxial feeder need to be welded with the wiring groove of 110 outer wall of metal cavity and generally existing welding efficiency is low, welding quality is poor
Problem is conducive to the electric property for promoting phase shift feeder equipment 100.
In the present embodiment, substrate 131 offers multiple power feed holes 1313 through substrate 131, and each power feed hole
1313 are provided with the feed pad 1315 being electrically connected with feeder line 135, signal terminal backwards to the edge of 110 side of metal cavity
It is electrically connected through power feed hole 1313 with feed pad 1315.
Specifically, power feed hole 1313 can be through-hole, plated through-hole can also be.Feed pad 1315 can be feeder line
135 a part can also be formed by way of metal patch.Signal terminal can be led to substrate 131 by power feed hole 1313
Backwards to 110 side of metal cavity.At this point, no matter which kind of mode is used to be electrically connected signal terminal with feed pad 1315, due to
Metal cavity 110 and phase-shift circuit 120 can form formation and keep away position, so that easy to operate.
Further, in the present embodiment, phase shift feeder equipment 100 further includes the feed wire for being arranged in power feed hole 1313
150.One end of feed wire 150 and signal terminal weld, and the other end and feed pad 1315 are welded.
Specifically, feed wire 150 is bent when passing through power feed hole 1313, distortion.Therefore, even if multiple signal terminals
It is not aligned one by one with multiple power feed holes 1313, can also realize and be electrically connected eventually by feed wire 150.That is, for moving
The requirement of the 131 aperture precision of assembly precision and substrate of circuitry phase 120 is relatively low, this is conducive to promote product yield.
Further, in the present embodiment, one end of feed wire 150 is formed with limited cap 151, opens on signal terminal
Equipped with through-hole (figure is not marked), feed wire 150 is arranged in through-hole and abuts limited cap 151 with the edge of through-hole.
Limited cap 151 is relatively large in diameter, so that the longitudinal cross-section of feed wire 150 is T-shaped.Weld feed wire 150
When, it can first will be far from the through-hole of one end insertion signal terminal of limited cap 151, feed wire 150 can be in the resistance of limited cap 151
It avoids skidding off under gear, consequently facilitating assembly.Specifically in the present embodiment, which is metal conductor rod, metallic conductor
Piece or PCB circuit board.
In the present embodiment, metal cavity 110 and the opposite side wall of evacuation window 111 offer with inside metal cavity 110
The handle hole 115 of connection.Specifically, handle hole 115 with evacuation the position of window 111 it is corresponding, by handle hole 115 can facilitate by
Phase-shift circuit 120 is connected with feeder line 135.For example, feed wire 150 can be packed by handle hole 115, and pass through operation
Feed wire 150 and signal terminal are welded in hole 115, so that easy to operate.
It is electrically connected it should be pointed out that other modes realization also can be used between phase-shift circuit 120 and feeder line 135.
For example:
In another embodiment, the position corresponding with multiple power feed holes 1313 of phase-shift circuit 120 is formed with multiple stabilizer blades
(not shown), multiple signal terminals are located on multiple stabilizer blades, stabilizer blade pass through evacuation window 111 and power feed hole 1313 and with feed
Pad 1315 welds.
Specifically, stabilizer blade 123 and power feed hole 1313 cooperate the quick positioning, it can be achieved that signal terminal and feeder line 135.
Moreover, drawing signal terminal by stabilizer blade 123, therefore only need to carry out primary welding operation at feed pad 1315, to subtract
Welding times are lacked.Further, since the position-limiting action of power feed hole 1313, stabilizer blade 123 is not easily to fall off, to can also promote phase shift electricity
The reliability that road 120 is electrically connected with feeder line 135.
Referring to Fig. 1 to Fig. 3, in the present embodiment, ground plane 133 is located at substrate 131 towards metal cavity 110
Side, feeder line 135 are located at side of the substrate 131 backwards to metal cavity 110,133 one of ground pad 1332 and ground plane
Molding.
Specifically, groove (figure is not marked) can be opened up between ground pad 1332 and power feed hole 1313, to avoid ground plane
133 are shorted with feeder line 135.At this point, power feed hole 1313 can be through-hole.Due to ground plane 113 directly with metal cavity 110
Side wall contact, therefore can preferably cover evacuation window 111 help to mention so that the closure of metal cavity 110 is more preferable
Rise the shield effectiveness of metal cavity 110.
As shown in Figures 4 and 5, in another embodiment, feeder line 135 is located at substrate 131 towards metal cavity 110
Side, ground plane 133 be located at substrate 131 backwards to metal cavity 110 side, ground plane 133 pass through metallization VIA 1334
It is electrically connected with ground pad 1332.
Specifically, feeder line 135 is located at the ipsilateral of substrate 131 with phase-shift circuit 120.At this point, power feed hole 1313 is interior
Wall metallization, so that feeder line 135 is electrically connected with feed pad 1315.
Moreover, the edge of 110 side wall of metal cavity, which is also provided with, keeps away a notch in order to keep away position to the realization of feeder line 135
101。
Above-mentioned phase shift feeder equipment 100, metal cavity 110 and substrate 131 mount, and by by the side of metal cavity 110
Wall and ground pad 1332 weld and realize being arranged totally for metal cavity 110 and feeding network plate 130.Therefore, metal cavity
110 can reduce thickness with the attachment of 130 phase of feeding network plate, and connect without additional fasteners.Moreover, can by evacuation window 111
Signal terminal is drawn along the vertical direction from inside, and phase-shift circuit 120 is electrically connected with feeder line 135, therefore is avoided from phase shift
The side cabling of feeder equipment 100, it is more compact into phase shift feeder equipment 100 is laid out.Therefore, above-mentioned phase shift feeder equipment
100 volumes reduce, structure simplifies, and are advantageously implemented the miniaturization of antenna for base station.
Each technical characteristic of embodiment described above can be combined arbitrarily, for simplicity of description, not to above-mentioned reality
It applies all possible combination of each technical characteristic in example to be all described, as long as however, the combination of these technical characteristics is not deposited
In contradiction, all should be considered as described in this specification.
Above-described embodiments merely represent several embodiments of the utility model, the description thereof is more specific and detailed,
But it cannot be understood as the limitations to utility model patent range.It should be pointed out that for the common skill of this field
For art personnel, without departing from the concept of the premise utility, various modifications and improvements can be made, these are belonged to
The protection scope of the utility model.Therefore, the scope of protection shall be subject to the appended claims for the utility model patent.
Claims (10)
1. a kind of phase shift feeder equipment characterized by comprising
Metal cavity, the part of side wall offer the evacuation window being connected to inside the metal cavity；
Phase-shift circuit is contained in the metal cavity, and the phase-shift circuit has multiple signal terminals；And
Feeding network plate including substrate, is formed in the feeder line and ground plane of the substrate opposite sides, and the one of the substrate
Side is additionally provided with the ground pad being electrically connected with the ground plane；
Wherein, the side wall that the metal cavity offers the evacuation window is attached at the substrate and is provided with the ground pad
Surface is simultaneously welded with the ground pad, and the multiple signal terminal is electrically connected through the evacuation window with the feeder line.
2. phase shift feeder equipment according to claim 1, which is characterized in that the metal cavity offers the evacuation window
Wall outer surface be plane.
3. phase shift feeder equipment according to claim 1, which is characterized in that the substrate is offered through the substrate
Multiple power feed holes, and each power feed hole is provided with backwards to the edge of the metal cavity side and is electrically connected with the feeder line
The feed pad connect, the signal terminal are electrically connected through the power feed hole with the feed pad.
4. phase shift feeder equipment according to claim 3, which is characterized in that the phase-shift circuit and the multiple power feed hole
Corresponding position is formed with multiple stabilizer blades, and the multiple signal terminal is located on the multiple stabilizer blade, and the stabilizer blade is worn
It is welded in the evacuation window and the power feed hole and with the feed pad.
5. phase shift feeder equipment according to claim 3, which is characterized in that the phase shift feeder equipment further includes being arranged in
The feed wire of the power feed hole, one end of the feed wire and the signal terminal weld, and the other end and the feed weld
Disk welding.
6. phase shift feeder equipment according to claim 5, which is characterized in that the phase-shift circuit is PCB or cubic metal characters or patterns
Structure, the feed wire are metal conductor rod, metallic conductor piece or PCB circuit board.
7. phase shift feeder equipment according to claim 5, which is characterized in that one end of the feed wire is formed with limit
Cap, offers through-hole on the signal terminal, and the feed wire is arranged in the through-hole and makes the limited cap and described logical
The edge in hole abuts.
8. phase shift feeder equipment according to claim 1, which is characterized in that the metal cavity is opposite with the evacuation window
Side wall offer and the handle hole that is connected to inside the metal cavity.
9. phase shift feeder equipment according to any one of claims 1 to 8, which is characterized in that the ground plane is located at described
For substrate towards the side of the metal cavity, the feeder line is located at the substrate backwards to the side of the metal cavity, institute
It states ground pad and the ground plane is integrally formed；
Alternatively, the feeder line is located at the substrate towards the side of the metal cavity, the ground plane is located at the base
Backboard is electrically connected by metallization VIA with the ground pad to the side of the metal cavity, the ground plane.
10. a kind of antenna for base station, which is characterized in that including the described in any item phase shift feed dresses of such as the claims 1 to 9
It sets.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920167367.0U CN209329161U (en) | 2019-01-30 | 2019-01-30 | Phase shift feeder equipment and antenna for base station |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920167367.0U CN209329161U (en) | 2019-01-30 | 2019-01-30 | Phase shift feeder equipment and antenna for base station |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209329161U true CN209329161U (en) | 2019-08-30 |
Family
ID=67732023
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920167367.0U Withdrawn - After Issue CN209329161U (en) | 2019-01-30 | 2019-01-30 | Phase shift feeder equipment and antenna for base station |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209329161U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109659694A (en) * | 2019-01-30 | 2019-04-19 | 京信通信技术(广州)有限公司 | Phase shift feeder equipment and antenna for base station |
| WO2022001068A1 (en) * | 2020-06-30 | 2022-01-06 | 京信通信技术(广州)有限公司 | Miniaturized antenna |
-
2019
- 2019-01-30 CN CN201920167367.0U patent/CN209329161U/en not_active Withdrawn - After Issue
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109659694A (en) * | 2019-01-30 | 2019-04-19 | 京信通信技术(广州)有限公司 | Phase shift feeder equipment and antenna for base station |
| WO2020155723A1 (en) * | 2019-01-30 | 2020-08-06 | 京信通信技术(广州)有限公司 | Phase shift feed apparatus and base station antenna |
| CN109659694B (en) * | 2019-01-30 | 2023-09-29 | 京信通信技术(广州)有限公司 | Phase-shifting feed device and base station antenna |
| WO2022001068A1 (en) * | 2020-06-30 | 2022-01-06 | 京信通信技术(广州)有限公司 | Miniaturized antenna |
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| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20200108 Address after: 510730 Guangdong city of Guangzhou province Guangzhou economic and Technological Development Zone Jinbi Road No. 6 Patentee after: COMBA TELECOM TECHNOLOGY (GUANGZHOU) Ltd. Address before: 510730 Guangdong city of Guangzhou province Guangzhou economic and Technological Development Zone Jinbi Road No. 6 Co-patentee before: COMBA TELECOM SYSTEMS (CHINA) Ltd. Patentee before: COMBA TELECOM TECHNOLOGY (GUANGZHOU) Ltd. Co-patentee before: COMBA TELECOM SYSTEMS (GUANGZHOU) Ltd. Co-patentee before: TIANJIN COMBA TELECOM SYSTEMS Ltd. |
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| AV01 | Patent right actively abandoned |
Granted publication date: 20190830 Effective date of abandoning: 20230929 |
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| AV01 | Patent right actively abandoned |
Granted publication date: 20190830 Effective date of abandoning: 20230929 |
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| AV01 | Patent right actively abandoned |