CN204441466U - Double-frequency antenna unit - Google Patents
Double-frequency antenna unit Download PDFInfo
- Publication number
- CN204441466U CN204441466U CN201520080457.8U CN201520080457U CN204441466U CN 204441466 U CN204441466 U CN 204441466U CN 201520080457 U CN201520080457 U CN 201520080457U CN 204441466 U CN204441466 U CN 204441466U
- Authority
- CN
- China
- Prior art keywords
- radiation
- radiation arm
- double
- antenna unit
- arm
- 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.)
- Active
Links
Landscapes
- Details Of Aerials (AREA)
Abstract
Disclose a kind of double-frequency antenna unit, it is characterized in that, comprise medium substrate and be positioned at the irradiation structure on medium substrate, described irradiation structure comprises: the first radiation component, comprise the first radiation arm and two the first radiation branch, described first radiation arm is three-back-shaped, and described two the first radiation branch stretch out in the same direction respectively from adjacent two ends, the periphery of described first radiation arm; And second radiation component, comprise the second radiation arm and two the second radiation branch, described second radiation arm is three-back-shaped, and described two the second radiation branch stretch out in the same direction respectively from adjacent two ends, the periphery of described second radiation arm; Wherein, the bearing of trend of described first radiation branch is contrary with the bearing of trend of described second radiation branch.This double-frequency antenna unit utilizes the design of irradiation structure to achieve two operating frequencies, can reduce antenna size further and improve antenna gain when adopting Metamaterial dielectric substrate.
Description
Technical field
The utility model relates to antenna technical field, relates more specifically to double-frequency antenna unit.
Background technology
Growing along with wireless communication technology, needs to carry out multiple different frequency range communication in wireless telecommunications electronic equipment simultaneously.Existing wireless telecommunications electronic equipment generally adopts many radio-frequency antennas, is respectively used to different frequency ranges.But the performance suffers of antenna is in the size of antenna.If the reduction of antenna size, then the electrical length of antenna reduces, and antenna radiation efficiency and operating frequency are changed.
Dual-band antenna utilizes specific irradiation structure to realize the resonance of two frequency ranges, thus can meet the communication need of two frequency ranges.Due to the minimizing of antenna amount, the size of antenna assembly therefore can be reduced.Further, the size and the raising antenna efficiency that reduce dual-band antenna self is expected.
Utility model content
The purpose of this utility model is to provide a kind of double-frequency antenna unit that can reduce own dimensions and improve antenna efficiency.
According to one side of the present utility model, a kind of double-frequency antenna unit is provided, comprise medium substrate and be positioned at the irradiation structure of first surface of described medium substrate, described irradiation structure comprises: the first radiation component, comprise the first radiation arm and two the first radiation branch, described first radiation arm is three-back-shaped, and described two the first radiation branch stretch out in the same direction respectively from adjacent two ends, the periphery of described first radiation arm; And second radiation component, comprise the second radiation arm and two the second radiation branch, described second radiation arm is three-back-shaped, and described two the second radiation branch stretch out in the same direction respectively from adjacent two ends, the periphery of described second radiation arm;
Wherein, the bearing of trend of described first radiation branch is contrary with the bearing of trend of described second radiation branch.
Preferably, the periphery of described first radiation arm comprises the first side of horizontal expansion, 3rd side of second side and longitudinal extension, four side, and described first side, described 3rd side, described second side and described four side order join end to end successively, the inner side of described first radiation arm comprises rectangle pars intermedia, wherein, the first side of the rectangle pars intermedia inside described first radiation arm and described first radiation arm periphery, second side, 3rd side, four side mutually near and be not connected, square shape space is formed to make the inside of described first radiation arm.
Preferably, the periphery of described second radiation arm comprises the 5th side of horizontal expansion, the heptalateral limit of the 6th side and longitudinal extension, 8th side, and described 5th side, described heptalateral limit, described 6th side and described 8th side order join end to end successively, the inner side of described second radiation arm comprises rectangle pars intermedia, wherein, 5th side of the rectangle pars intermedia inside described second radiation arm and described second radiation arm periphery, 6th side, heptalateral limit, 8th side mutually near and be not connected, square shape space is formed to make the inside of described second radiation arm.
Preferably, described first radiation component also comprise the second surface being positioned at described medium substrate the 3rd radiation arm, described second radiation component also comprises the 4th radiation arm of the second surface being positioned at described medium substrate, wherein, the first surface of described medium substrate is relative with second surface and be parallel to each other.
Preferably, described 3rd radiation arm and described 4th radiation arm are all in square shape and centre includes rectangular apertures, and the square shape space that the projection of described 3rd radiation arm on the first surface of described medium substrate and described first radiation arm inside are formed matches, the projection of described 4th radiation arm on the first surface of described medium substrate and the inner square shape space formed of described second radiation arm match.
Preferably, the projection of rectangle pars intermedia inside described first radiation arm on the second surface of described medium substrate and the rectangular apertures in the middle of described 3rd radiation arm match, and the projection of the rectangle pars intermedia inside described second radiation arm on the second surface of described medium substrate and the rectangular apertures in the middle of described 4th radiation arm match should.
Preferably, the first radiation component of described irradiation structure and the second radiation component are mutually symmetrical.
Preferably, described irradiation structure is formed by the metal level of patterning or is formed by electrically conductive ink printing, and the component of described medium substrate comprises glass-fiber-fabric, epoxy resin, and with the compound of described epoxy resin generation cross-linking reaction.
Preferably, described medium substrate comprises at least one stacking first lamella and the second lamella, the surface of close second lamella of each at least one first lamella described forms man-made microstructure, and on the surface of the first lamella, described irradiation structure is formed on the second lamella, by described second lamella, described man-made microstructure and described irradiation structure to be kept apart.
Preferably, the first side of described first radiation arm close to each other with the 5th side of described second radiation arm and parallel relatively, and described first side and described 5th side middle part are separately provided with distributing point, the extending end portion of described first radiation branch and the extending end portion of described second radiation branch close to each other and facing each other.
The utility model forms the irradiation structure of dipole antenna on medium substrate.Because radiation component comprises the first and second radiation branch of the first and second three-back-shaped radiation arms, the third and fourth radiation arm and strip, therefore two-frequency operation can be realized in an antenna assembly.In a preferred embodiment, this double-frequency antenna unit adopts Metamaterial dielectric substrate, can reduce antenna size further and improve antenna gain.This double-frequency antenna unit is applicable to household radio InterWorking Equipment, such as router, Set Top Box etc.
Accompanying drawing explanation
By referring to the description of accompanying drawing to the utility model embodiment, above-mentioned and other objects of the present utility model, feature and advantage will be more clear, in the accompanying drawings:
Fig. 1 a and 1b is the structural upright schematic diagram watched from different directions according to double-frequency antenna unit of the present utility model;
Fig. 2 is the structural upright schematic diagram of the medium substrate adopted in double-frequency antenna unit;
Fig. 3 is the curve chart of reflection coefficient S11 with frequency change of double-frequency antenna unit;
Fig. 4 is the curve chart of voltage standing wave ratio with frequency change of double-frequency antenna unit;
Fig. 5 is the antenna pattern of double-frequency antenna unit at 2450MHz;
Fig. 6 is the antenna pattern of double-frequency antenna unit at 5800MHz.
Embodiment
Below in conjunction with accompanying drawing, several preferred embodiment of the present utility model is described in detail, but the utility model is not restricted to these embodiments.The utility model contain any make in spirit and scope of the present utility model substitute, amendment, equivalent method and scheme.
To have the utility model to make the public and understand thoroughly, in following the utility model preferred embodiment, describe concrete details in detail, and do not have the description of these details also can understand the utility model completely for a person skilled in the art.
Fig. 1 a and 1b is the structural upright schematic diagram according to double-frequency antenna unit of the present utility model, and wherein Fig. 1 a illustrates the schematic perspective view from top viewing, and Fig. 1 b illustrates the schematic perspective view watched from below.Double-frequency antenna unit comprises medium substrate 100, be positioned at irradiation structure 200 on medium substrate 100 first surface and feed line 300.The component of medium substrate 100 comprises glass-fiber-fabric, epoxy resin and the compound with described epoxy resin generation cross-linking reaction.Irradiation structure 200 is formed by the metal level of patterning, or is formed by electrically conductive ink printing.Metal level can be made up of the one be selected from gold, silver, copper, aluminium or iron.Preferably, metal level is made up of copper, to take into account cost and the performance of antenna.Feed line 300 is such as coaxial line, for the dipole FD feed to irradiation structure 200.
Irradiation structure 200 comprises the first radiation component and the second radiation component that are mutually symmetrical.First radiation component comprises the first radiation arm 211, the 3rd radiation arm 214 and two the first radiation branch 212 and 213.Second radiation component comprises the second radiation arm 221, the 4th radiation arm 224 and two the second radiation branch 222 and 223.
First radiation arm 211 and the second radiation arm 221 are separated from one another three-back-shaped.The periphery of the first radiation arm 211 comprises the 3rd side, the four side of the first side of horizontal expansion, second side and longitudinal extension, and first side, the 3rd side, second side and four side order join end to end successively, the inner side of the first radiation arm 211 comprises rectangle pars intermedia, wherein, the first side of the rectangle pars intermedia inside the first radiation arm 211 and the first radiation arm 211 periphery, second side, the 3rd side, four side mutually near and be not connected, form square shape space to make the inside of described first radiation arm 211.The periphery of the second radiation arm 221 comprises heptalateral limit, the 8th side of the 5th side of horizontal expansion, the 6th side and longitudinal extension, and the 5th side, heptalateral limit, the 6th side and the 8th side order join end to end successively, the inner side of the second radiation arm 221 comprises rectangle pars intermedia, wherein, 5th side of the rectangle pars intermedia inside the second radiation arm 221 and the second radiation arm 221 periphery, the 6th side, heptalateral limit, the 8th side mutually near and be not connected, form square shape space to make the inside of the second radiation arm 221.
The first side of the first radiation arm 211 close to each other with the 5th side of the second radiation arm 221 and parallel relatively, and first side and the 5th side middle part are separately provided with distributing point.Feed line 300 connects the distributing point on the first side of the first radiation arm 211 and the 5th side of the second radiation arm 221 respectively.
Two the first radiation branch 212 and 213 are respectively strip, stretch out in the same direction respectively from adjacent two ends, the periphery of the first radiation arm 211.Two the second radiation branch 222 and 223 are respectively strip, stretch out in the same direction respectively from adjacent two ends, the periphery of the second radiation arm 221.The bearing of trend of two the first radiation branch 212 and 213 is contrary with the bearing of trend of two the second radiation branch 222 and 223.The extending end portion of two the first radiation branch 212 and 213 is close to each other and facing each other with the extending end portion of two the second radiation branch 222 and 223 respectively.
In the present embodiment, when the length of antenna is 1/2 of electromagnetic wave signal wavelength, the transmitting and receiving of antenna are most effective.In the present embodiment, the length of antenna is the length sum of the first radiation arm 211 and the second radiation arm 221, therefore, when the first radiation arm 211 and the respective length of the second radiation arm 221 are 1/4 of electromagnetic wave signal wavelength, the transmitting and receiving of antenna are most effective.In the present embodiment, adopt the first three-back-shaped radiation arm 211 and the second radiation arm 221, can broadband performance be realized.
In double-frequency antenna unit, the response of the length major effect antenna low-frequency range of the first radiation arm 211 and the second radiation arm 221.The response of the length major effect antenna high band of two the first radiation branch 212 and 213 and two the second radiation branch 222 and 223.Therefore, by regulating the length of the length of the first radiation arm 211 and the second radiation arm 221, two the first radiation branch 212 and 213 and two the second radiation branch 222 and 223, dual frequency radiation characteristic can be realized.
In a preferred embodiment, first radiation component also comprises the 3rd radiation arm 214 of the second surface being positioned at medium substrate 100, second radiation component also comprises the 4th radiation arm 224 of the second surface being positioned at medium substrate 100, wherein, the first surface of medium substrate 100 is relative with second surface and be parallel to each other.3rd radiation arm 214 and the 4th radiation arm 224 is respectively square shape and centre includes rectangular apertures.The square shape space that the projection of 3rd radiation arm 214 on the first surface of medium substrate 100 and the first radiation arm 211 inside are formed matches, and the projection of the 4th radiation arm 224 on the first surface of medium substrate 100 and the inner square shape space formed of the second radiation arm 221 match.The projection of rectangle pars intermedia inside first radiation arm 211 on the second surface of medium substrate 100 and the rectangular apertures in the middle of the 3rd radiation arm 214 match, and the projection of the rectangle pars intermedia inside the second radiation arm 221 on the second surface of medium substrate 100 and the rectangular apertures in the middle of the 4th radiation arm 224 match should.
Fig. 2 is the structural upright schematic diagram of the medium substrate adopted in double-frequency antenna unit.In this preferred embodiment, medium substrate 100 is metamaterial substrate, comprises the lamination of the first lamella 110 and the second lamella 120, and is positioned at the man-made microstructure 130 on the surface of the first lamella 110.
In the present embodiment, medium substrate 100 designs based on artificial electromagnetic material principle art, wherein, artificial electromagnetic material refers to the topological metal structure of sheet metal being engraved into given shape, and the topological metal structure of described given shape being arranged at the extraordinary electromagnetic material of the equivalence of processing and manufacturing on certain dielectric constant and magnetic permeability base material, its performance parameter depends primarily on the topological metal structure of the given shape of its sub-wavelength.
First lamella 110 is attached with the man-made microstructure 130 of different graphic and physical dimension to realize absorbing the electromagnetic wave of different frequency section.Second lamella 120 covers man-made microstructure 130, and provides support for irradiation structure 200.First lamella 110 and the second lamella 120 can be obtained by macromolecular material, ceramic material, ferroelectric material, ferrite material or ferromagnetic material respectively, and wherein macromolecular material can adopt polytetrafluoroethylene, FR4 or F4B etc.
Man-made microstructure 130 can adopt the topological structure had electric field response, and as " work " font, " ten " font or " H " shape and its derived structure, embodiment illustrated in fig. 2 is the man-made microstructure 130 of " work " font.Adopt the man-made microstructure of suitable dimension and pattern, negative magnetoconductivity and negative permittivity can be realized in medium substrate 100, thus utilize Metamaterial dielectric substrate reduce antenna size and improve antenna gain.
In a particular embodiment, man-made microstructure 130 is made up of wires such as at least one copper wire or filamentary silvers, has special pattern.Metal wire is attached on the first lamella 110 by etching, plating, the multiple methods such as quarters, photoetching, electronics quarter or ion quarter of boring.Wherein, etching is preferably manufacturing process, its step is after the plane pattern designing suitable man-made microstructure, first a tinsel is integrally attached on the first lamella 110, then etching machines is passed through, the chemical reaction of solvent and metal is utilized to get rid of foil parts beyond man-made microstructure predetermined pattern, the remaining man-made microstructure that can obtain array arrangement.
In the above-described embodiment, a surface of the first lamella 110 forms man-made microstructure 130, and the second lamella 120 is as separator.In an alternative embodiment, can form man-made microstructure on two surfaces of the first lamella 110, the second lamella 120 is as separator.In the embodiment that another substitutes, man-made microstructure can be formed on a surface of the first lamella 110, form the irradiation structure of antenna assembly on the other surface, thus not need the second lamella 120 of adding.In the embodiment that other substitute, can stacking multiple first lamella 110, a surface of each the first lamella 110 forms man-made microstructure, such as, medium substrate comprises at least one stacking first lamella 110 and second lamella 120, the surface of close second lamella 120 of each at least one first lamella 110 forms man-made microstructure, and on the surface of the first lamella 110, irradiation structure is formed on the second lamella 120, by the second lamella 120, man-made microstructure and irradiation structure are kept apart.According to the design needs of antenna, the pattern of the man-made microstructure of each aspect, distribution and size can be identical or different.
If man-made microstructure adopts PCB structural design to shorten process time, reduce production cost, ensure antenna consistency.
Fig. 3 is the curve chart of reflection coefficient S11 with frequency change of double-frequency antenna unit, and Fig. 4 is the curve chart of voltage standing wave ratio with frequency change of double-frequency antenna unit.Composition graphs 3 and 4 can be found out, this double-frequency antenna unit reflection coefficient S11 under 2.4-2.48GHz and 4.9-5.85GHz two working frequency range is all less than-10dB, and voltage standing wave ratio is all less than 2.This shows that this antenna assembly has less return loss and good matching effect under two frequency ranges, can receive small-signal well.
Fig. 5 is the antenna pattern of double-frequency antenna unit at 2450MHz.Fig. 6 is the antenna pattern of double-frequency antenna unit at 5800MHz.Antenna pattern refers at the figure changed with direction from the relative field strength (normalization modulus value) of antenna a distance radiation field.As can be seen from Fig. 5 and 6, this antenna assembly has good directional diagram at two working frequency range.The antenna gain of this antenna assembly significantly improves relative to traditional antenna, and directivity is improved, thus improves antenna radiation efficiency.
In the present embodiment, as shown in table 1 below by choosing voltage standing wave ratio, reflection coefficient S11 and gain data that this double-frequency antenna unit of multiple frequency (as 2400MHz, 2500MHz, 4900MHz, 5300MHz, 5500MHz, 5850MHz) actual measurement obtains under respective frequency:
Table 1. voltage standing wave ratio VSWR at different frequencies, S11 value and gain
| Frequency (MHz) | 2400 | 2500 | 4900 | 5300 | 5500 | 5850 |
| VSWR | 1.633 | 2.06 | 1.995 | 1.387 | 1.093 | 1.679 |
| S11 | -12.372 | -9.182 | -9.569 | -15.78 | -26.99 | -11.91 |
| Gain(dBi) | 1.665 | 1.419 | 2.5 | 3.257 | 3.578 | 3.658 |
According to embodiment of the present utility model as described above, these embodiments do not have all details of detailed descriptionthe, do not limit the specific embodiment that this utility model is only described yet.Obviously, according to above description, can make many modifications and variations.This specification is chosen and is specifically described these embodiments, is to explain principle of the present utility model and practical application better, thus makes art technical staff that the utility model and the amendment on the utility model basis can be utilized well to use.The utility model is only subject to the restriction of claims and four corner and equivalent.
Claims (10)
1. a double-frequency antenna unit, is characterized in that, comprise medium substrate and be positioned at the irradiation structure of first surface of described medium substrate, described irradiation structure comprises:
First radiation component, comprise the first radiation arm and two the first radiation branch, described first radiation arm is three-back-shaped, and described two the first radiation branch stretch out in the same direction respectively from adjacent two ends, the periphery of described first radiation arm; And
Second radiation component, comprise the second radiation arm and two the second radiation branch, described second radiation arm is three-back-shaped, and described two the second radiation branch stretch out in the same direction respectively from adjacent two ends, the periphery of described second radiation arm;
Wherein, the bearing of trend of described first radiation branch is contrary with the bearing of trend of described second radiation branch.
2. double-frequency antenna unit according to claim 1, it is characterized in that, the periphery of described first radiation arm comprises the first side of horizontal expansion, 3rd side of second side and longitudinal extension, four side, and described first side, described 3rd side, described second side and described four side order join end to end successively, the inner side of described first radiation arm comprises rectangle pars intermedia, wherein, the first side of the rectangle pars intermedia inside described first radiation arm and described first radiation arm periphery, second side, 3rd side, four side mutually near and be not connected, square shape space is formed to make the inside of described first radiation arm.
3. double-frequency antenna unit according to claim 2, it is characterized in that, the periphery of described second radiation arm comprises the 5th side of horizontal expansion, the heptalateral limit of the 6th side and longitudinal extension, 8th side, and described 5th side, described heptalateral limit, described 6th side and described 8th side order join end to end successively, the inner side of described second radiation arm comprises rectangle pars intermedia, wherein, 5th side of the rectangle pars intermedia inside described second radiation arm and described second radiation arm periphery, 6th side, heptalateral limit, 8th side mutually near and be not connected, square shape space is formed to make the inside of described second radiation arm.
4. double-frequency antenna unit according to claim 3, it is characterized in that, described first radiation component also comprise the second surface being positioned at described medium substrate the 3rd radiation arm, described second radiation component also comprises the 4th radiation arm of the second surface being positioned at described medium substrate, wherein, the first surface of described medium substrate is relative with second surface and be parallel to each other.
5. double-frequency antenna unit according to claim 4, it is characterized in that, described 3rd radiation arm and described 4th radiation arm are all in square shape and centre includes rectangular apertures, and the square shape space that the projection of described 3rd radiation arm on the first surface of described medium substrate and described first radiation arm inside are formed matches, the projection of described 4th radiation arm on the first surface of described medium substrate and the inner square shape space formed of described second radiation arm match.
6. double-frequency antenna unit according to claim 5, it is characterized in that, the projection of rectangle pars intermedia inside described first radiation arm on the second surface of described medium substrate and the rectangular apertures in the middle of described 3rd radiation arm match, and the projection of the rectangle pars intermedia inside described second radiation arm on the second surface of described medium substrate and the rectangular apertures in the middle of described 4th radiation arm match should.
7. the double-frequency antenna unit according to any one of claim 1-6, is characterized in that, the first radiation component and second radiation component of described irradiation structure are mutually symmetrical.
8. the double-frequency antenna unit according to any one of claim 1-6, is characterized in that, described irradiation structure is formed by the metal level of patterning or formed by electrically conductive ink printing.
9. double-frequency antenna unit according to claim 1, it is characterized in that, described medium substrate comprises at least one stacking first lamella and the second lamella, the surface of close second lamella of each at least one first lamella described forms man-made microstructure, and on the surface of the first lamella, described irradiation structure is formed on the second lamella, by described second lamella, described man-made microstructure and described irradiation structure to be kept apart.
10. double-frequency antenna unit according to claim 1, it is characterized in that, the first side of described first radiation arm close to each other with the 5th side of described second radiation arm and parallel relatively, and described first side and described 5th side middle part are separately provided with distributing point, the extending end portion of described first radiation branch and the extending end portion of described second radiation branch close to each other and facing each other.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520080457.8U CN204441466U (en) | 2015-02-04 | 2015-02-04 | Double-frequency antenna unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520080457.8U CN204441466U (en) | 2015-02-04 | 2015-02-04 | Double-frequency antenna unit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204441466U true CN204441466U (en) | 2015-07-01 |
Family
ID=53609291
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520080457.8U Active CN204441466U (en) | 2015-02-04 | 2015-02-04 | Double-frequency antenna unit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204441466U (en) |
-
2015
- 2015-02-04 CN CN201520080457.8U patent/CN204441466U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Wong et al. | Small‐size printed loop‐type antenna integrated with two stacked coupled‐fed shorted strip monopoles for eight‐band LTE/GSM/UMTS operation in the mobile phone | |
| US20100201578A1 (en) | Half-loop chip antenna and associated methods | |
| CN1972008A (en) | Multiband antenna component | |
| CN107634322B (en) | Double-frequency high-gain omnidirectional antenna | |
| CN108134196B (en) | Microstrip antenna and television | |
| WO2018119929A1 (en) | Electromagnetic multi-input multi-output antenna system and mobile terminal | |
| CN105449348A (en) | Electromagnetic dipole antenna | |
| CN205429159U (en) | Broadband antenna based on coplane waveguide feed | |
| CN105406184A (en) | Novel ultra-wide band MIMO (Multiple Input Multiple Output) antenna | |
| CN105680172A (en) | Coplanar waveguide feed based wide-band antenna | |
| CN211578982U (en) | Novel double-layer multi-frequency broadband microstrip antenna | |
| Kumar et al. | Design of hybrid fractal antenna for UWB application | |
| US6977613B2 (en) | High performance dual-patch antenna with fast impedance matching holes | |
| CN205211935U (en) | Novel ultra wide band MIMO antenna | |
| CN203895598U (en) | High-gain double-frequency array antenna | |
| CN204361264U (en) | Double-frequency antenna unit | |
| CN106058455B (en) | High-gain antenna based on electromagnetic metamaterial unit | |
| Sharma et al. | A compact two element U shaped MIMO planar inverted-F antenna (PIFA) for 4G LTE mobile devices | |
| CN204361265U (en) | Double-frequency antenna unit | |
| Sarkar et al. | Multiband miniaturised fractal antenna for mobile communications | |
| Pandey et al. | Design of a compact dual band meandering line monopole antenna for WLAN 2.4/5.0 GHz applications | |
| CN204441466U (en) | Double-frequency antenna unit | |
| CN206301944U (en) | Multi-input multi-output antenna system and mobile terminal | |
| CN204361262U (en) | Double-frequency antenna unit | |
| CN204361263U (en) | Double-frequency antenna unit |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: SHENZHEN GUANGQI INTELLIGENT PHOTONICS TECHNOLOGY Free format text: FORMER OWNER: SHENZHEN KUANG-CHI INNOVATION TECHNOLOGY CO., LTD. Effective date: 20150701 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20150701 Address after: 518000 Guangdong city of Shenzhen province Futian District Shennan Road and CaiTian Road intersection East Xintiandi Plaza C block 2007-27 Patentee after: Shenzhen Guang Qi intelligent photonic Technology Co., Ltd. Address before: 518000 Guangdong city of Shenzhen province Futian District Shennan Road and CaiTian Road intersection East Xintiandi Plaza C block 2007-27 Patentee before: Shenzhen Kuang-Chi Innovation Technology Co., Ltd. |
|
| TR01 | Transfer of patent right |
Effective date of registration: 20210402 Address after: 2 / F, software building, No.9, Gaoxin Zhongyi Road, Nanshan District, Shenzhen City, Guangdong Province Patentee after: KUANG-CHI INSTITUTE OF ADVANCED TECHNOLOGY Address before: 518000 Guangdong, Shenzhen, Futian District, Shennan Road and colored field road intersection C East Block New World Plaza 2007-27 Patentee before: KUANG-CHI INTELLIGENT PHOTONIC TECHNOLOGY Ltd. |
|
| TR01 | Transfer of patent right |