CN105609937A - Optical transparent antenna - Google Patents
Optical transparent antenna Download PDFInfo
- Publication number
- CN105609937A CN105609937A CN201510955346.1A CN201510955346A CN105609937A CN 105609937 A CN105609937 A CN 105609937A CN 201510955346 A CN201510955346 A CN 201510955346A CN 105609937 A CN105609937 A CN 105609937A
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- China
- Prior art keywords
- antenna
- layer
- optical transparency
- frequency
- frequency selection
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Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/36—Structural form of radiating elements, e.g. cone, spiral, umbrella; Particular materials used therewith
- H01Q1/364—Structural form of radiating elements, e.g. cone, spiral, umbrella; Particular materials used therewith using a particular conducting material, e.g. superconductor
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/36—Structural form of radiating elements, e.g. cone, spiral, umbrella; Particular materials used therewith
- H01Q1/38—Structural form of radiating elements, e.g. cone, spiral, umbrella; Particular materials used therewith formed by a conductive layer on an insulating support
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/48—Earthing means; Earth screens; Counterpoises
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/50—Structural association of antennas with earthing switches, lead-in devices or lightning protectors
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q15/00—Devices for reflection, refraction, diffraction or polarisation of waves radiated from an antenna, e.g. quasi-optical devices
- H01Q15/0006—Devices acting selectively as reflecting surface, as diffracting or as refracting device, e.g. frequency filtering or angular spatial filtering devices
- H01Q15/0013—Devices acting selectively as reflecting surface, as diffracting or as refracting device, e.g. frequency filtering or angular spatial filtering devices said selective devices working as frequency-selective reflecting surfaces, e.g. FSS, dichroic plates, surfaces being partly transmissive and reflective
Landscapes
- Aerials With Secondary Devices (AREA)
Abstract
The embodiment of the invention discloses an optical transparent antenna, and the antenna comprises a three-layer structure which is formed by the sequential connection of a first layer, a second layer and a third layer. The first layer is an antenna radiator layer, the second layer is a dielectric layer with transparency, and the third layer is an antenna ground layer. The antenna radiator layer takes an ITO (indium tin oxide) film as a radiation paster, and the antenna ground layer employs a slotting-type frequency selection surface structure. According to the scheme of the invention, the frequency selection surface is a slotting type, so the frequency selection surface belongs to a band-pass frequency selection surface from the aspect of frequency attributes, the interior of a pass-band can achieve the reflection of an incident electromagnetic wave and the exterior of the pass-band displays transmission characteristics. Moreover, the frequency selection characteristics of the frequency selection surface enable the antenna to show directional characteristics when the antenna works at a pass-band of the frequency selection surface. Meanwhile, the slotting-type frequency selection surface is higher in light transmissivity. Therefore, the antenna solves a problem that an optical transparent antenna cannot achieve directional radiation in the prior art.
Description
Technical field
The present invention relates to wireless communications application field, particularly a kind of optical transparency antenna.
Background technology
Along with the fast development of wireless communication system, the application scenarios of wireless communication system is more and more abundanter, fromAnd make wireless communication system more and more various for the requirement of antenna performance. It is good for antenna is obtainedConformability, security and stealth, need antenna to have to be integrated in mobile terminal, satellite, automobile etc.In the system of optical transparency characteristic, scientists starts to pay close attention to optical transparency antenna.
1997, the scientists of American National aerospace management board (NASA) proposed to make to use upBright thin-film material is made the imagination of antenna. 2000, French Universite De Rennes 1 N.Outaleb grindStudying carefully team, to take the lead in having proposed to utilize indium tin oxide (IndiumTinOxides, ITO) film to make light saturatingBright film antenna. Wherein, ito thin film is that one utilizes sputter coating technology clear glass or transparent mouldingThe film that plates layer of metal oxide on material and form, it has very high translucidus, and light transmission rate canReach more than 80%, and it has good high frequency conductive characteristic simultaneously, therefore can utilize it to designOptical transparency antenna.
In prior art, optical transparency antenna is single thin film antenna form, its structures shape its radiation sideBe non-directional radiation to figure. But, in a lot of application, all need antenna to there is directional radiation properties, as rightIn the optical transparency antenna being integrated on vehicle glass, its radiation should be outside towards car body and spoke to automotive interiorPenetrating should be as much as possible little; For the antenna being integrated on the solar panel of satellite, we need for another exampleMake as much as possible the energy of antenna to eradiation. This also makes directionality become an important finger of antenna performanceMark.
Summary of the invention
The embodiment of the invention discloses a kind of optical transparency antenna, to solve, in prior art, optical transparency antenna can notThe problem of enough directed radiations.
In order to achieve the above object, the embodiment of the invention discloses a kind of optical transparency antenna, structure comprises:
Ground floor, the second layer and the 3rd layer of three-decker of joining successively; Wherein, ground floor is aerial radiationBody layer, the second layer is the dielectric layer with transparent characteristic, the 3rd layer is antenna stratum, antenna radiator layer byIndium tin oxide ito thin film is as radiation patch, and antenna stratum adopts the frequency-selective surfaces knot of fluting typeStructure.
Concrete, dielectric layer is made up of clear glass or transparent plastic.
Concrete, frequency-selective surfaces structure is:
There is the frequency-selective surfaces structure of total reflection characteristic at the microwave frequency band of work.
Concrete, the metal oxide in ito thin film is indium tin oxide.
Concrete, utilize sputter coating and photoetching technique on the second layer, to form ground floor and the 3rd layer.
Concrete, optical transparency antenna structure also comprises: conducting strip; Conducting strip is positioned at described the 3rd layer being scheduled toPosition, this precalculated position is corresponding with the coaxial feed point of described ground floor.
The embodiment of the present invention provides a kind of optical transparency antenna, and structure comprises: ground floor, the second layer andThree layers of three-decker of joining successively, wherein, ground floor is antenna radiator layer, the second layer is to haveThe dielectric layer of bright characteristic, the 3rd layer is antenna stratum, described antenna radiator layer is by indium tin oxide ITOFilm is as radiation patch, and what described antenna stratum adopted is the frequency-selective surfaces of fluting type. Due toThe frequency-selective surfaces of the optical transparency antenna in this programme is the frequency-selective surfaces of fluting type, from it frequentlyIn rate characteristic, belong to band flow-through frequency-selective surfaces, in passband, can reflect the electromagnetic wave of incident, logicalBand is outer shows transmissison characteristic, and utilizes this medium frequency to select surperficial frequency selective characteristic, makes light saturatingShow directional characteristic when line is operated in the passband of frequency-selective surfaces tomorrow, meanwhile, and the frequency of fluting typeRate selects surface also to have higher light transmission rate, and therefore, the optical transparency antenna that this programme provides solvesThe problem that in prior art, optical transparency antenna can not directed radiation.
Brief description of the drawings
In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, below will be to implementingIn example or description of the Prior Art, the accompanying drawing of required use is briefly described, and apparently, the following describesIn accompanying drawing be only some embodiments of the present invention, for those of ordinary skill in the art, do not payingGo out under the prerequisite of creative work, can also obtain according to these accompanying drawings other accompanying drawing.
The front view of a kind of optical transparency antenna structure that Fig. 1 (a) provides for the embodiment of the present invention;
The upward view of a kind of optical transparency antenna structure that Fig. 1 (b) provides for the embodiment of the present invention;
The structural representation of the frequency-selective surfaces of a kind of optical transparency antenna that Fig. 2 provides for the embodiment of the present inventionFigure;
The corresponding concrete chi of front view of a kind of optical transparency antenna structure that Fig. 3 (a) provides for the embodiment of the present inventionVery little schematic diagram;
The corresponding concrete chi of upward view of a kind of optical transparency antenna structure that Fig. 3 (b) provides for the embodiment of the present inventionVery little schematic diagram;
The tool of the frequency selective surface in a kind of optical transparency antenna structure that Fig. 3 (c) provides for the embodiment of the present inventionBody size schematic diagram;
Fig. 4 is in the optical transparency antenna structure lower frequency choosing shown in Fig. 3 (a), Fig. 3 (b), Fig. 3 (c)Select surperficial S11 characteristic curve;
Fig. 5 is the S11 under the optical transparency antenna structure shown in Fig. 3 (a), Fig. 3 (b), Fig. 3 (c)Characteristic curve (emulation);
Fig. 6 is that the optical transparency antenna structure shown in Fig. 3 (a), Fig. 3 (b), Fig. 3 (c) is operated in 0.5GHzTime radiation characteristic: wherein, (a) being 3D antenna pattern, is (b) xoz surface radiation directional diagram, (c)For yoz surface radiation directional diagram;
Fig. 7 is that the optical transparency antenna structure shown in Fig. 3 (a), Fig. 3 (b), Fig. 3 (c) is operated in 0.75GHzTime radiation characteristic: wherein (a) is 3D antenna pattern, is (b) xoz surface radiation directional diagram, (c)For yoz surface radiation directional diagram;
Fig. 8 is that the optical transparency antenna structure shown in Fig. 3 (a), Fig. 3 (b), Fig. 3 (c) is operated in 1.2GHzTime radiation characteristic: wherein, (a) being 3D antenna pattern, is (b) xoz surface radiation directional diagram, (c)For yoz surface radiation directional diagram.
Detailed description of the invention
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clearlyChu, intactly description, obviously, described embodiment is only the present invention's part embodiment, instead ofWhole embodiment. Based on the embodiment in the present invention, those of ordinary skill in the art are not making creationThe every other embodiment obtaining under property work prerequisite, belongs to the scope of protection of the invention.
In order to solve the problem that optical transparency antenna in prior art can not directed radiation, the embodiment of the present invention is carriedSupply a kind of optical transparency antenna.
The front view of a kind of optical transparency antenna that Fig. 1 (a) provides for the embodiment of the present invention, Fig. 1 (b)For the upward view of a kind of optical transparency antenna provided by the invention, as Fig. 1 (a) and Fig. 1 (b) the present invention realityA kind of optical transparency antenna of providing of example is provided, can be comprised: ground floor 101, the second layer 102 and the 3rd layer103 three-deckers of joining successively;
Wherein, described ground floor 101 is antenna radiator layers, and the described second layer 102 is to have transparent characteristicDielectric layer, described the 3rd layer 103 is antenna stratum, described antenna radiator layer is by indium tin oxide ITOFilm is as radiation patch, and described antenna stratum adopts the frequency-selective surfaces structure of fluting type.
Be understandable that, ito thin film is that one utilizes sputter coating technology on transparent medium, to plate one deckMetal oxide and the film that forms, it has very high translucidus, and light transmission rate can reach more than 80%,And it has good high frequency conductive characteristic simultaneously. Further, in embodiments of the present invention, ITO is thinMetal oxide in film can be indium tin oxide, is certainly not limited to this.
And the dielectric layer in the embodiment of the present invention can be made up of clear glass or transparent plastic, certainly,Be not limited to this. It is emphasized that transparent described in the embodiment of the present invention refers to the opaque of materialDegree is less than 50% and have certain refraction (refractive index is between 1.5 to 1.7) and a reflection characteristic.For example: can use PETG (PET) transparent material as dielectric layer.
The frequency-selective surfaces structure of the fluting type that wherein, the embodiment of the present invention provides can be as Fig. 2The frequency-selective surfaces structure of shown square fluting, the fluting type of certainly square other shapes in additionFrequency-selective surfaces structure is equally applicable to the optical transparency antenna that the embodiment of the present invention provides, and, flutingConcrete shape can set according to practical application scene. It will be appreciated by persons skilled in the art thatFrequency-selective surfaces is a kind ofly on dielectric layer, to arrange with two-dimensional and periodic the list forming by passive resonance unitLayer or the directrix plane structure of multilayer, it is week electromagnetic wave and light wave all to certain frequency selective characteristicPhase structure, its unit can be divided into two types: one is periodicity metal patch, and another kind is on metal screenPeriodicity gap (slit). It should be noted that, as depicted in figs. 1 and 2, the frequency of the 3rd layer is selectedOn surface, only have four limits of square fluting to be coated with metal level, other parts do not have metal level, are completely transparent, wherein, this metal level can be silver coating, is certainly not limited to this.
In addition, with regard to the embodiment of the present invention, utilized sputter coating technology and photoetching technique at the second layer 102Two surfaces obtain ground floor 101 and the 3rd layer 103. Concrete, in the process that transparent antenna is madeIn, the medium of first definite second layer 102, can be clear glass, can be also transparent plastic, this caseIn example, select clear glass as dielectric layer, clear glass is to obtain by purchase under normal circumstances; Secondly,Utilize sputter coating technology ito thin film to be plated on a surface of clear glass, recycling photoetching process willIto thin film makes designed radiant body shape by lithography, is ground floor 101; In addition, at clear glassAnother surface that another surface utilizes metal coating technology that argent is plated in to clear glass is upper, recyclingPhotoetching process goes out metal lithographic the shape on antenna stratum, is the 3rd layer 103; Can be real by coating techniqueExisting ground floor 101, the second layer 102 and the 3rd layer 103 fit tightly successively, complete the making of transparent antenna.Certainly, what in the embodiment of the present invention, propose utilizes sputter coating technology and photoetching technique, can also adoptRealize and form ground floor 101 and the 3rd layer 103 on two of the second layer 102 surfaces by other techniques.
Here it is emphasized that the ground floor 101 shown in Fig. 1, the second layer 102 and the 3rd layer 103,Shape and magnitude relationship as just example, ensureing that ground floor 101 is by the second layer 102 and the 3rd layerUnder the prerequisite that 103 complete laminatings and optical transparency antenna can be installed, the embodiment of the present invention is not to optical transparencyShape and the magnitude relationship of the ground floor 101 of antenna, the second layer 102 and the 3rd layer 103 limit.
In addition, in order to reach good directional radiation properties, frequency-selective surfaces structure can be: in workMicrowave frequency band there is the frequency-selective surfaces structure of total reflection characteristic. Certainly, for some directed radiation spyProperty requires under low application scenarios, and this frequency-selective surfaces structure can be also: at the microwave frequency band tool of workHave the frequency-selective surfaces structure of non-total reflection characteristic, this is also rational.
Further, for realizing better feed between frequency-selective surfaces and radiating surface, the invention processA kind of optical transparency antenna that example provides can also comprise: conducting strip; This conducting strip is positioned at described frequency and selectsThe precalculated position of surface texture, the coaxial feed point of this precalculated position and described ground floor corresponding, wherein,This conducting strip can be sheet metal, is ensureing that under the prerequisite of required electric conductivity, the concrete material of sheet metal is passableSet as the case may be. As depicted in figs. 1 and 2, for realizing the radiation of frequency-selective surfaces and antennaBetter feed between face, because coaxial feed point is in the microstrip feed line bottom of the antenna stack of optical transparency antenna,A sheet metal 104 can be set below frequency-selective surfaces.
Because the frequency-selective surfaces of the optical transparency antenna in this programme is the frequency-selective surfaces of fluting type,Belong to band flow-through frequency-selective surfaces from its frequency characteristic, in passband, can carry out instead the electromagnetic wave of incidentPenetrate, passband shows transmissison characteristic outward, and utilizes this medium frequency to select surperficial frequency selective characteristic, makesOptical transparency antenna shows directional characteristic while being operated in the passband of frequency-selective surfaces, and therefore, this programme is carriedThe optical transparency antenna of confession has solved the problem that optical transparency antenna in prior art can not directed radiation.
Below in conjunction with concrete size and operating frequency, introduce optical transparency antenna that the embodiment of the present invention providesAntenna performance.
Intuitively, the concrete size that the embodiment of the present invention provides one group of each structural parameters of optical transparency antenna is as Fig. 3(a), shown in Fig. 3 (b), Fig. 3 (c) mark, wherein, the unit of each mark is mm, at this knotUnder structure, allow optical transparency antenna be operated under different frequency.
For example: under the optical transparency antenna concrete structure of giving at Fig. 3 (a), Fig. 3 (b), Fig. 3 (c), adjustThe frequency parameter of joint antenna environment of living in, allows it can be operated in 0.7GHz.
Fig. 4 is the S11 characteristic curve of its frequency-selective surfaces, taking-6dB as boundary, and the work of frequency-selective surfacesBandwidth is: 624MHz-1223MHz.
Fig. 5 is the S11 characteristic curve of the optical transparency antenna entirety that obtains by emulation, can find out, with-10dB is boundary, and the working frequency range of this antenna is: 627MHz-1065MHz.
The spoke that is operated in 0.5GHz, 0.75GHz, 1.2GHz that Fig. 6-8 provide successively for the embodiment of the present inventionPenetrate directional diagram. Can find out that it shows as certain angle range of radiation on the whole, what is called has certainDirectionality.
It should be noted that, in this article, the relational terms such as the first and second grades be only used for byEntity or operation and another entity or operating space separate, and not necessarily require or imply theseBetween entity or operation, there is relation or the order of any this reality. And term " comprises ", " bagContaining " or its any other variant be intended to contain comprising of nonexcludability, thereby make to comprise a series of key elementsProcess, method, article or equipment not only comprise those key elements, but also comprise and clearly not listingOther key elements, or be also included as the intrinsic key element of this process, method, article or equipment. ?In the absence of more restrictions, the key element being limited by statement " comprising ... ", and be not precluded within and compriseIn process, method, article or the equipment of described key element, also there is other identical element.
Each embodiment in this description all adopts relevant mode to describe, phase homophase between each embodimentLike part mutually referring to, what each embodiment stressed is from other embodiment different itPlace. Especially, for device embodiment, because it is substantially similar in appearance to embodiment of the method, so describeFairly simple, relevant part is referring to the part explanation of embodiment of the method.
The foregoing is only preferred embodiment of the present invention, be not intended to limit protection model of the present inventionEnclose. All any amendments of doing within the spirit and principles in the present invention, be equal to replacement, improvement etc., all bagBe contained in protection scope of the present invention.
Claims (6)
1. an optical transparency antenna, is characterized in that, comprising: ground floor, the second layer and the 3rd layer phase successivelyThe three-decker connecing; Wherein, described ground floor is antenna radiator layer, and the described second layer is to have transparent spyThe dielectric layer of property, described the 3rd layer is antenna stratum, described antenna radiator layer is thin by indium tin oxide ITOFilm is as radiation patch, and described antenna stratum adopts the frequency-selective surfaces structure of fluting type.
2. optical transparency antenna according to claim 1, is characterized in that, described dielectric layer is by transparent glassGlass or transparent plastic form.
3. optical transparency antenna according to claim 1, is characterized in that, described frequency-selective surfaces knotStructure is:
There is the frequency-selective surfaces structure of total reflection characteristic at the microwave frequency band of work.
4. optical transparency antenna according to claim 1, is characterized in that, the gold in described ito thin filmGenus oxide is indium tin oxide.
5. optical transparency antenna according to claim 1, is characterized in that, utilizes sputter coating and photoetchingTechnology forms described ground floor and described the 3rd layer on the described second layer.
6. according to the optical transparency antenna described in claim 1-5 any one, it is characterized in that, also comprise: leadElectricity sheet; Described conducting strip is positioned at the precalculated position of described the 3rd layer, this precalculated position and described ground floor sameAxle distributing point is corresponding.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510955346.1A CN105609937A (en) | 2015-12-17 | 2015-12-17 | Optical transparent antenna |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510955346.1A CN105609937A (en) | 2015-12-17 | 2015-12-17 | Optical transparent antenna |
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| CN105609937A true CN105609937A (en) | 2016-05-25 |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106207487A (en) * | 2016-07-19 | 2016-12-07 | 中国空空导弹研究院 | A kind of millimeter wave yagi aerial and preparation method thereof |
| CN109713442A (en) * | 2019-01-03 | 2019-05-03 | 京东方科技集团股份有限公司 | A kind of antenna and preparation method thereof, transparency window |
| CN110808449A (en) * | 2019-10-18 | 2020-02-18 | 西安中易建科技有限公司 | Light-transmitting antenna manufacturing method for curtain wall and light-transmitting curtain wall |
| CN111129784A (en) * | 2020-01-10 | 2020-05-08 | 南京航空航天大学 | High-light-transmittance ultra-wideband low-scattering super surface suitable for solar cell array |
| CN111342222A (en) * | 2020-03-05 | 2020-06-26 | 安徽精卓光显技术有限责任公司 | Transparent antenna device |
| CN111655018A (en) * | 2020-05-25 | 2020-09-11 | 航天科工武汉磁电有限责任公司 | Anti-electromagnetic leakage transparent material based on single-layer conductive film |
| CN111900547A (en) * | 2020-08-21 | 2020-11-06 | 西安电子科技大学 | Broadband low-scattering microstrip array antenna based on coded super surface |
| CN112563758A (en) * | 2020-12-03 | 2021-03-26 | 上海科技大学 | Transparent electromagnetic lens |
| US11239562B2 (en) | 2019-03-28 | 2022-02-01 | Guangdong Oppo Mobile Telecommunications Corp., Ltd. | Antenna module and electronic device |
| US11271303B2 (en) | 2019-01-03 | 2022-03-08 | Boe Technology Group Co., Ltd. | Antenna, smart window, and method of fabricating antenna |
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Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106207487A (en) * | 2016-07-19 | 2016-12-07 | 中国空空导弹研究院 | A kind of millimeter wave yagi aerial and preparation method thereof |
| CN109713442A (en) * | 2019-01-03 | 2019-05-03 | 京东方科技集团股份有限公司 | A kind of antenna and preparation method thereof, transparency window |
| US11502412B2 (en) | 2019-01-03 | 2022-11-15 | Boe Technology Group Co., Ltd. | Antenna configured to transmit or receive signal, smart window, and method of fabricating antenna |
| US11271303B2 (en) | 2019-01-03 | 2022-03-08 | Boe Technology Group Co., Ltd. | Antenna, smart window, and method of fabricating antenna |
| US11239562B2 (en) | 2019-03-28 | 2022-02-01 | Guangdong Oppo Mobile Telecommunications Corp., Ltd. | Antenna module and electronic device |
| CN110808449A (en) * | 2019-10-18 | 2020-02-18 | 西安中易建科技有限公司 | Light-transmitting antenna manufacturing method for curtain wall and light-transmitting curtain wall |
| CN111129784A (en) * | 2020-01-10 | 2020-05-08 | 南京航空航天大学 | High-light-transmittance ultra-wideband low-scattering super surface suitable for solar cell array |
| CN111342222A (en) * | 2020-03-05 | 2020-06-26 | 安徽精卓光显技术有限责任公司 | Transparent antenna device |
| CN111342222B (en) * | 2020-03-05 | 2023-01-03 | 安徽精卓光显技术有限责任公司 | Transparent antenna device |
| CN111655018A (en) * | 2020-05-25 | 2020-09-11 | 航天科工武汉磁电有限责任公司 | Anti-electromagnetic leakage transparent material based on single-layer conductive film |
| CN111900547B (en) * | 2020-08-21 | 2021-04-27 | 西安电子科技大学 | Broadband low-scattering microstrip array antenna based on coded super surface |
| CN111900547A (en) * | 2020-08-21 | 2020-11-06 | 西安电子科技大学 | Broadband low-scattering microstrip array antenna based on coded super surface |
| CN112563758A (en) * | 2020-12-03 | 2021-03-26 | 上海科技大学 | Transparent electromagnetic lens |
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Application publication date: 20160525 |