CN209266567U - A kind of new antenna - Google Patents
A kind of new antenna Download PDFInfo
- Publication number
- CN209266567U CN209266567U CN201821260462.7U CN201821260462U CN209266567U CN 209266567 U CN209266567 U CN 209266567U CN 201821260462 U CN201821260462 U CN 201821260462U CN 209266567 U CN209266567 U CN 209266567U
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- Prior art keywords
- printed circuit
- circuit board
- antenna
- spiral arm
- flexible media
- 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.)
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- 230000003071 parasitic effect Effects 0.000 claims abstract description 16
- 239000000463 material Substances 0.000 claims description 4
- 230000005611 electricity Effects 0.000 claims description 3
- 239000004593 Epoxy Substances 0.000 claims description 2
- 239000003365 glass fiber Substances 0.000 claims description 2
- 230000003321 amplification Effects 0.000 claims 2
- 238000003199 nucleic acid amplification method Methods 0.000 claims 2
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 6
- 230000005855 radiation Effects 0.000 description 6
- 230000004048 modification Effects 0.000 description 5
- 238000012986 modification Methods 0.000 description 5
- 238000000034 method Methods 0.000 description 4
- 230000008569 process Effects 0.000 description 3
- 238000004891 communication Methods 0.000 description 2
- 239000011810 insulating material Substances 0.000 description 2
- 230000010287 polarization Effects 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 229910000570 Cupronickel Inorganic materials 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000003822 epoxy resin Substances 0.000 description 1
- 150000002148 esters Chemical class 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 239000005433 ionosphere Substances 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 229920000647 polyepoxide Polymers 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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- Variable-Direction Aerials And Aerial Arrays (AREA)
Abstract
The utility model discloses a kind of new antennas, comprising: parasitic element and active cell；The parasitic element includes spiral arm, and the spiral arm is for radiating or receiving electromagnetic wave；The active cell includes the first printed circuit board and the second printed circuit board；First printed circuit board and second printed circuit board stacking interval setting；The feed port of the spiral arm is connect with the feed circuit of first printed circuit board；First printed circuit board is electrically connected with second printed circuit board；Second printed circuit board is provided with amplifying circuit and connector, and the amplifying circuit after amplifying processing from the first printed circuit board received signal through the connector for exporting.
Description
Technical field
The utility model relates to technical field of satellite navigation more particularly to a kind of new antennas.
Background technique
Four-arm spiral antenna is to be proposed by Johns Hopkins University, U.S. Kilgus in nineteen sixty-eight, the four arms spiral day
Line have the characteristics that cardioid pattern, without any ground connection, good front and back than and excellent circular polarization characteristics, therefore it is extensive
Applied to satellite communication system, be especially considered as ideal global positioning system (Global Position System,
GPS), Beidou satellite navigation system (BeiDou Navigation Satellite System, BDS) and satellite mobile phone receive
Antenna.
Currently, the antenna performance of the four-arm spiral antenna of miniaturization still needs to improve, to adapt to the needs of modern communications.
Utility model content
The utility model embodiment provides a kind of new antenna, is reducing the same of four-arm spiral antenna size to realize
When, improve the performance of four-arm spiral antenna.
The utility model embodiment provides a kind of new antenna, comprising: parasitic element, active cell；
The parasitic element includes spiral arm, and the spiral arm is for radiating or receiving electromagnetic wave；
The active cell includes the first printed circuit board and the second printed circuit board；First printed circuit board and institute
State the second printed circuit board stacking interval setting；The feed of the feed port of the spiral arm and first printed circuit board electricity
Road connection；First printed circuit board is electrically connected with second printed circuit board；Second printed circuit board is provided with
Amplifying circuit and connector, the amplifying circuit will be for that will amplify processing from the first printed circuit board received signal
It is exported by the connector.
New antenna in the utility model embodiment does not include dielectric posts, greatly reduces the weight of antenna, effectively
The lightness for realizing antenna；In addition, increasing the second print by setting the first printed circuit board, the second printed circuit board
Amplifying circuit in printed circuit board makes up at a distance from the parasitic element since antenna volume is small, the reduction of circuit board volume is led
What is caused is influenced by spiral arm backward radiation, self-excitation phenomena is led to the problem of, to guarantee that entire antenna can work normally.
A kind of possible implementation, the parasitic element further include flexible media plate, and the spiral arm is located at described soft
The surface of property dielectric-slab；
The bottom end and top of the flexible media plate are respectively arranged with fixation member；The fixation member is used to support described
Flexible media plate.
By the way that fixation member is arranged, solve the problems, such as that flexible media plate is easily deformed.
A kind of possible implementation, the new antenna further include antenna house；
The inner wall of the antenna house is axisymmetric shape, so that in the central axis of the antenna house, antenna house inner wall
Mandrel line and the flexible media plate central axis are overlapped.
By being set as axisymmetric shape in antenna house, and in the central axis of the antenna house and the flexible media plate
Mandrel line is overlapped, and is solved flexible media plate and is not easy the problem of being fixed on antenna cover structure center, influencing antenna performance.
A kind of possible implementation, the inner wall top of the antenna house are provided with buckle, the buckle for it is described
The fixation member on top is fixedly connected.
By buckle, so that antenna house is easily fixed with the fixation member on flexible media plate, and then flexible media is realized
The fixation of plate, and guarantee that flexible media plate is located at the central axial direction of antenna house, be conducive to flexible media plate to be fixed on
The structure centre of antenna house ensure that antenna so that four spiral arms be avoided unevenly to be influenced by the frequency deviation of antenna house
The receptivity in each orientation.
A kind of possible implementation, the fixation member are annular ring, and annular ring is set to the flexible media
In the inner ring of plate.
A kind of possible implementation is provided with shielding between second printed circuit board and a printed circuit board
Cover；
Second printed circuit board is provided with the amplifying circuit close to first printed circuit board on one side；It is described
Amplifying circuit is located in the shielding case；
Second printed circuit board is provided with the connector far from first printed circuit board on one side.
By setting shielding case, the interference of the amplifying circuit and spiral arm in the second printed circuit board is further avoided,
And effectively secure the first printed circuit board and the second printed circuit board.
A kind of possible implementation, first printed circuit board and second printed circuit board pass through RF cable
Electrical connection, the RF cable are located in the shielding case.
A kind of possible implementation, first printed circuit board and second printed circuit board are circle；It is described
Shielding case is cylinder.
A kind of possible implementation determines that the ground connection of the spiral arm is single according to the desired input impedance of the spiral arm
The position that member is connect with the spiral arm.
A kind of possible implementation, the material of annular ring are glass-epoxy.
Detailed description of the invention
It, below will be to required in embodiment description in order to illustrate more clearly of the technical scheme in the embodiment of the utility model
Attached drawing to be used is briefly introduced, it should be apparent that, the accompanying drawings in the following description is only some implementations of the utility model
Example, for those of ordinary skill in the art, without any creative labor, can also be attached according to these
Figure obtains other attached drawings.
Fig. 1 is a kind of new antenna structure schematic diagram provided by the embodiment of the utility model；
Fig. 2 is a kind of new antenna structure schematic diagram provided by the embodiment of the utility model；
Fig. 3 is a kind of new antenna structure schematic diagram provided by the embodiment of the utility model；
Fig. 4 is a kind of shielding case structure schematic diagram of new antenna provided by the embodiment of the utility model；
Fig. 5 is a kind of antenna cover structure schematic diagram of new antenna provided by the embodiment of the utility model；
Fig. 6 is a kind of antenna cover structure schematic diagram of new antenna provided by the embodiment of the utility model.
Specific embodiment
It is practical to this below in conjunction with attached drawing in order to keep the purpose of this utility model, technical solution and advantage clearer
It is novel to be described in further detail, it is clear that described embodiment is only the utility model some embodiments, rather than
Whole embodiments.Based on the embodiments of the present invention, those of ordinary skill in the art are not making creative work
Under the premise of all other embodiment obtained, fall within the protection scope of the utility model.
It in satellite navigation and positioning field, generally requires antenna that there are good circular polarization characteristics, mitigates from ionosphere, right
The interference of the multipath of fluid layer and ground environment.Four-arm spiral antenna has good axis than the heart-shaped gain direction that covers with hemisphere
Figure, the gain sharp-decay at pitching angle of cut-off, therefore it is widely applied to satellite navigation and positioning field.
As shown in Figure 1, the parasitic element 100 of antenna is made of four wires, every wires are wrapped in specific circle
Cylinder or circular conical surface are spiral, because referred to herein as spiral arm 110, the spacing of adjoining spiral arm are equal.The length of spiral arm 110 is big
The about integral multiple of λ/4, λ are the corresponding wavelength of working frequency of antenna.Four spiral arm constant amplitudes are fed and make adjoining spiral
Arm has 90 ° of phase difference, and antenna can radiate or receive circular polarisation electromagnetic wave.
For receiving the active antenna of electromagnetic wave, one piece of band feed circuit usually is set in the lower section of spiral arm 110 and is put
The printed circuit board 130 of big circuit.In order to meet the needs of satellite navigation and positioning terminal miniaturization, helical antenna is smaller and smaller,
This also causes the circuit board of inner antenna smaller and smaller.Simultaneously in order to guarantee normal received signal, the gain of amplifying circuit is usual
It is very high, therefore printed circuit board 130 is highly susceptible to the influence of spiral backward radiation, self-excitation phenomena is generated, so that antenna can not
Normal received signal.
To solve the above problems, as shown in Fig. 2, the embodiment of the present application provides a kind of new antenna, comprising: parasitic element
200, active cell 201；
Parasitic element 200 includes spiral arm 210, and spiral arm 210 is for radiating or receiving electromagnetic wave；
Active cell 201 includes the first printed circuit board 211 and the second printed circuit board 212；First printed circuit board 211
Interval setting is laminated with the second printed circuit board 212；The feed port 230 of spiral arm 210 and the first printed circuit board 211
Feed circuit connection；First printed circuit board 211 is electrically connected with the second printed circuit board 212；The setting of second printed circuit board 212
There are amplifying circuit and connector 241, the amplifying circuit from 211 received signal of the first printed circuit board for that will amplify
It is exported after processing through connector 241.
By introducing two printed circuit board 211-212, feed circuit and amplifying circuit are separated, reduce spiral significantly
Influence of the backward radiation to amplifying circuit guarantees antenna normal received signal to avoid self-excitation.
The surface of first printed circuit board 211 is provided with feed circuit, and the surface of the second printed circuit board 212, which is provided with, puts
Big circuit.The overlapped way of first printed circuit board 211 and the second printed circuit board 212 can be the second printed circuit board 212
Modes of emplacement positioned at the underface of the first printed circuit board 211, can also according to actual needs, the second printed circuit board 212
It is effectively to avoid the second printed circuit board 212 by spiral backward radiation with being staggeredly placed for the first printed circuit board 211
It influences, the spacing of the second printed circuit board 212 and the first printed circuit board 211 can be set according to actual needs, and have at one
In body embodiment, the second printed circuit board 212 and the first printed circuit board 211 have at least spacing of 4mm.
In a specific embodiment, the round printed circuit that two printed circuit board 211-212 can be as shown in Figure 2
Plate, the surface of the diameter printed circuit board 211 of 16.4mm, thick 1.2mm, first are provided with the feed electricity of four feed ports 230 of band
Road, the bottom end of four spiral arms 210 are welded to four feed ports 230.
In the specific implementation process, the ground connection of spiral arm 210 can be determined according to the desired input impedance of spiral arm 210
The position that unit is connect with spiral arm 210.
In the specific implementation process, four spiral arms 110 as shown in Figure 1 can be printed on a very thin flexible media
It on plate 120, then flexible media coiled sheet at a cylindrical surface or circular conical surface, but is easy for deforming by slight impact, deform
After can seriously affect antenna performance.
As shown in figure 3, in a specific embodiment, parasitic element 200 further includes flexible media plate, spiral arm 210
In the surface of the flexible media plate；
The bottom end and top of the flexible media plate are respectively arranged with fixation member 301；Fixation member 301 is used to support institute
State flexible media plate.
Wherein, the flexible media plate is welded on the upper surface center of the first printed circuit board 211.The flexible media plate
It can be a cylinder after spooling, the diameter 13mm of cylinder, height 44mm are placed on the first printed circuit board 211.
The diameter of first printed circuit board 211 and the second printed circuit board 212 is than being rolled into columned flexible media plate
Diameter is big.Flexible media plate is overlapped with the central axis of two printed circuit board 211-212.
In a specific embodiment, fixation member 301 is annular ring, and annular ring is set to the flexible media plate
Inner ring in.
It is respectively fixed with an annular ring at the both ends of flexible media plate, flexible media plate is made to preferably keep its shape, and
It is amenable to slight shock and indeformable.Annular ring is concordant with the top of flexible media plate and bottom end.In a specific embodiment
In, the outer diameter of annular ring can be 13mm, and internal diameter can be 11.6mm, thick 1mm, and annular ring can be set in flexible media plate
Inside, therefore, the outer diameter of annular ring is equal with the diameter of flexible media plate.The material of annular ring can be glass fibre
Epoxy resin, or other insulating materials, it is not limited here.
A kind of possible implementation, flexible media coiled sheet are respectively stained at a cylindrical surface, the top and bottom end on cylindrical surface
One annular ring, so that the flexible media plate is still able to maintain the shape on cylindrical surface after by minor impact.
It is, of course, also possible to fix an annular ring respectively in the inner side and outer side of flexible media plate, or in flexible media
An annular ring is fixed on the outside of plate, fixed form without limitation, can enable flexible media plate preferably keep its shape.
Fixation member 301 can also be other fixed forms, for example, cross support etc., it can also be according to the flexibility
The final shape of dielectric-slab is determining, it is not limited here.
For the signal performance for improving antenna, further decrease dry between printed circuit board 211-212 and spiral arm 210
It disturbs, as shown in figure 4, being provided with a metallic shield 401 between two printed circuit board 211-212.First printed circuit board
211 are electrically connected with the second printed circuit board 212 by RF cable, specifically, the input terminal of amplifying circuit and feed circuit
Output end is connected with one short thin RF cable.The RF cable is located in shielding case 401.
In a kind of specific embodiment, screen is provided between the second printed circuit board 212 and the first printed circuit board 211
Cover cover 401；
Second printed circuit board 212 is provided with the amplifying circuit close to the first printed circuit board 211 on one side；It is described to put
Big circuit is located in shielding case 401；
Second printed circuit board 212 is provided with connector 241 far from the first printed circuit board 211 on one side.
Specifically, the second printed circuit board 212 can be located at immediately below the first printed circuit board 211 at 4~8mm, surface
It is provided with amplifying circuit.
In order to meet field work needs, the parasitic element of antenna can be fixed on inside antenna house, play water proof and dust proof work
With.Antenna house is commonly made to cylindrical or cone, and makes of insulating materials.For miniaturization helix antenna, antenna house
Flexible media plate 120 of the size only than spooling it is bigger, therefore antenna house is generated very close to spiral arm 110 and to spiral arm 110
Very big frequency deviation influences.In addition, existing antenna house is generally only a simple cylindrical or cone, it is unable to ensure flexibility
Dielectric-slab 120 is fixed on antenna cover structure center.If flexible media plate 120 deviates the central axis of antenna house, antenna house
Different influences is generated to four spiral arms 110, to keep antenna inconsistent in the performance in each orientation.
As shown in figure 5, in a specific embodiment, the new antenna further includes antenna house 401；
The inner wall of antenna house 401 is axisymmetric shape, so that the central axis of antenna house 401,401 inner wall of antenna house
Central axis and the flexible media plate central axis are overlapped.
Specifically, the inner wall of antenna house 401 can be the axisymmetric shapes such as cylinder, rotary table, circular cone.It had been embodied
The fixation member 301 of Cheng Zhong, flexible media plate top can be fixed with the inner wall of antenna house 401.
By setting axisymmetric shape for the inner wall of antenna house 401, guarantee that flexible media plate is located at the center of antenna house
Axis direction is conducive to the structure centre for flexible media plate being fixed on antenna house 401, to avoid four spiral arms uneven
Ground is influenced by the frequency deviation of antenna house 401, ensure that the receptivity in each orientation of antenna.
In a specific embodiment, the first printed circuit board 211 and the second printed circuit board 212 are circle；Shielding
Cover 401 is cylinder.
Certainly, the first printed circuit board 211, the second printed circuit board 212 and shielding case 401 can also be other shapes,
It can be set as needed, it is not limited here.
The shielding case 401 for the cylindrical shape that a diameter is 14mm, screen are welded between two printed circuit board 211-212
Cover 401 is covered to be made of the good metal of electric conductivity (such as foreign white copper).After amplifying circuit is separated with feed circuit, so that second
Amplifying circuit on printed circuit board 212 is maintained a certain distance with spiral arm 210, reduces the shadow of spiral backward radiation significantly
It rings, to avoid self-excitation.Shielding case 401, which plays, to be stopped antenna side external disturbance and supports the first printed circuit board 211
Effect.The lower surface of second printed circuit board 212 is welded with a connector 241, the output end of connector 241 and amplifying circuit
Connection, for providing amplified radiofrequency signal for satellite navigation and positioning terminal.
To reduce process costs, convenient for the axis alignment and fixation of flexible media plate and antenna house 401, antenna house 401 outside
See to be cylinder.401 inner wall of antenna house is in truncated cone-shaped, from bottom to top bore gradually constriction.In cylinder and rotary table
Mandrel line is overlapped.The diameter of rotary table bottom relative aperture printed circuit board 211-212 is big.Relative aperture printed circuit board at the top of rotary table
Diameter is small.Antenna house 401 bottom bore 17.3mm, top bore 14mm, height 63.8mm.Antenna house 401 can use poly- carbon
Acid esters material is made, and outside can be diameter 18.8mm, the cylinder of height 67.5mm.
The inner wall top of antenna house 401 is provided with buckle 501, and buckle 501 is for the fixation with the top of flexible media plate
Component 301 is fixedly connected.
As shown in fig. 6, buckle 501 is evenly distributed on diameter circumference more smaller than the internal diameter of fixation member 301, the circle
The center of circle in week is located at 401 central axis of antenna house.
In a specific embodiment, 8 buckles 501, this 8 cards can be set at the top of 401 inner wall of antenna house
Button 501 is evenly distributed on the circumference that a diameter is 11.5 millimeters, and the center of circle of the circumference is located at 401 central axis of antenna house.
By filling in parasitic element 200 and active cell 201 inside antenna house 401, the first printed circuit board 211 is blocked
It is fastened from inside with the annular ring for being fixed on flexible media plate top among antenna house 401, and with buckle 501, it is ensured that soft
Property dielectric-slab is securely mounted on 401 center of antenna house, is not easy to shake.The bore of 401 inner wall of antenna house from bottom to top by
It is tapered narrow, and in 401 inside top of antenna house setting buckle 501, guarantee that flexible media plate is located at the central axis of antenna house
Direction is conducive to the structure centre for flexible media plate being fixed on antenna house, thus avoid four spiral arms unevenly by
The frequency deviation of antenna house influences, and ensure that the receptivity in each orientation of antenna.
In the utility model embodiment, new antenna does not include dielectric posts, greatly reduces the weight of antenna, effectively
Realize the lightweight of antenna；In addition, increasing the second printing by setting the first printed circuit board, the second printed circuit board
Amplifying circuit in circuit board makes up at a distance from the parasitic element of the antenna since antenna volume is small, circuit board volume subtracts
It is influenced caused by few by spiral arm backward radiation, self-excitation phenomena is led to the problem of, to guarantee that entire antenna can work normally.
By the way that shielding case is arranged, the interference of the amplifying circuit and spiral arm in the second printed circuit board is further avoided, and by setting
Fixation member is set, solves that flexible media plate is easily deformed and flexible media plate is not easy to be fixed on antenna cover structure center
The problem of, effectively raise antenna performance.
Although the preferred embodiment of the utility model has been described, once a person skilled in the art knows basic
Creative concept, then additional changes and modifications may be made to these embodiments.It is wrapped so the following claims are intended to be interpreted as
It includes preferred embodiment and falls into all change and modification of the scope of the utility model.
Obviously, it is practical without departing from this can to carry out various modification and variations to the utility model by those skilled in the art
Novel range.If in this way, these modifications and variations of the present invention belong to the utility model claims range it
Interior, then the utility model is also intended to include these modifications and variations.
Claims (10)
1. a kind of new antenna characterized by comprising parasitic element, active cell；
The parasitic element includes spiral arm, and the spiral arm is for radiating or receiving electromagnetic wave；
The active cell includes the first printed circuit board and the second printed circuit board；First printed circuit board and described the
Two printed circuit boards stacking interval setting；The feed circuit of the feed port of the spiral arm and first printed circuit board connects
It connects；First printed circuit board is electrically connected with second printed circuit board；Second printed circuit board is provided with amplification
Circuit and connector, the amplifying circuit after amplifying processing from the first printed circuit board received signal for passing through
The connector output.
2. new antenna as described in claim 1, which is characterized in that the parasitic element further includes flexible media plate, described
Spiral arm is located at the surface of the flexible media plate；
The bottom end and top of the flexible media plate are respectively arranged with fixation member；The fixation member is used to support the flexibility
Dielectric-slab.
3. new antenna as claimed in claim 2, which is characterized in that the new antenna further includes antenna house；
The inner wall of the antenna house is axisymmetric shape, so that the central axis of the central axis of the antenna house, antenna house inner wall
Line and the flexible media plate central axis are overlapped.
4. new antenna as claimed in claim 3, which is characterized in that the inner wall top of the antenna house is provided with buckle, institute
Buckle is stated for being fixedly connected with the fixation member on the top.
5. new antenna as claimed in claim 2, which is characterized in that the fixation member is annular ring, and annular ring is set
It is placed in the inner ring of the flexible media plate.
6. such as new antenna described in any one of claim 1 to 5, which is characterized in that second printed circuit board with it is described
Shielding case is provided between one printed circuit board；
Second printed circuit board is provided with the amplifying circuit close to first printed circuit board on one side；The amplification
Circuit is located in the shielding case；
Second printed circuit board is provided with the connector far from first printed circuit board on one side.
7. new antenna as claimed in claim 6, which is characterized in that
First printed circuit board is electrically connected with second printed circuit board by RF cable, and the RF cable is located at
In the shielding case.
8. new antenna as claimed in claim 6, which is characterized in that first printed circuit board and the second printing electricity
Road plate is circle；The shielding case is cylinder.
9. new antenna as claimed in claim 6, which is characterized in that determine institute according to the desired input impedance of the spiral arm
State the position that the ground unit of spiral arm is connect with the spiral arm.
10. new antenna as claimed in claim 5, which is characterized in that the material of annular ring is glass fibre epoxy tree
Rouge.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821260462.7U CN209266567U (en) | 2018-08-06 | 2018-08-06 | A kind of new antenna |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821260462.7U CN209266567U (en) | 2018-08-06 | 2018-08-06 | A kind of new antenna |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209266567U true CN209266567U (en) | 2019-08-16 |
Family
ID=67556245
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821260462.7U Withdrawn - After Issue CN209266567U (en) | 2018-08-06 | 2018-08-06 | A kind of new antenna |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209266567U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109103587A (en) * | 2018-08-06 | 2018-12-28 | 上海海积信息科技股份有限公司 | A kind of new antenna |
-
2018
- 2018-08-06 CN CN201821260462.7U patent/CN209266567U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109103587A (en) * | 2018-08-06 | 2018-12-28 | 上海海积信息科技股份有限公司 | A kind of new antenna |
| CN109103587B (en) * | 2018-08-06 | 2024-01-05 | 上海海积信息科技股份有限公司 | Four-arm spiral antenna |
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| AV01 | Patent right actively abandoned |
Granted publication date: 20190816 Effective date of abandoning: 20240105 |
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