CN105552571A - Metamaterial electromagnetic energy collection device based on quadruple rotational symmetric structure - Google Patents
Metamaterial electromagnetic energy collection device based on quadruple rotational symmetric structure Download PDFInfo
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- CN105552571A CN105552571A CN201610093112.5A CN201610093112A CN105552571A CN 105552571 A CN105552571 A CN 105552571A CN 201610093112 A CN201610093112 A CN 201610093112A CN 105552571 A CN105552571 A CN 105552571A
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q17/00—Devices for absorbing waves radiated from an antenna; Combinations of such devices with active antenna elements or systems
- H01Q17/008—Devices for absorbing waves radiated from an antenna; Combinations of such devices with active antenna elements or systems with a particular shape
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Abstract
The invention discloses a metamaterial electromagnetic energy collection device based on a quadruple rotational symmetrical structure. The metamaterial electromagnetic energy collection device comprises a bottom-layer metal film, an intermediate loss dielectric layer and a top-layer metal film from the bottom up, wherein the bottom-layer metal film, the intermediate loss dielectric layer and the top-layer metal film are mutually fit with one another. The metamaterial electromagnetic energy collection device provided by the invention has the characteristics of high load absorptivity, being insensitive to polarization and wide incident angle, can achieve efficient energy collection, and has good application prospect in the fields of the Internet of Things, radio frequency identification, wireless sensor networks and energy collection and recovery.
Description
Technical field
The present invention relates to a kind of Meta Materials electromagnetic energy gathering-device based on quadruple rotational symmetry structure, belong to Novel manual electromagnetic material, collection of energy and recovery field, the fields such as Internet of Things, radio-frequency (RF) identification (RFID) and wireless sensor network (WSN) can be applied to.
Background technology
As two large core technologies of Internet of Things, radio-frequency (RF) identification (RFID) and wireless sensor network (WSN) have obtained showing great attention to of academia and business circles in the world, and department of national governments also actively pushes forward the development of Internet of Things.The technology of Internet of things such as WSN and RFID penetrate into every field: as national defense safety, space exploration, environmental monitoring etc.RFID, WSN Node distribution scope is wide, quantity is many or work in untouchable particular surroundings, and wireless energy supply technology is the key technology extending its life cycle, broaden application scope.For improving energy conversion efficiency, requiring that electromagnetic energy Collection utilization device polarizes insensitive to transverse electric (TransverseElectric, TE), horizontal magnetic (TransverseMagnetic, TM), the electromagnetic wave of broad-angle-incident can be absorbed.
Meta Materials refers to some artificial composite structures with the extraordinary physical property that natural material does not possess or composite material.It is as a kind of new artificial electromagnetic material, there is the advantage that structure is simple, ultra-thin, volume is little and energy per unit area collection efficiency is high, Novel manual electromagnetic material obtained significant progress in recent years, all be widely used in stealthy, antenna works etc., for the demand of electromagnetic energy gathering-device, the present invention proposes the Meta Materials electromagnetic energy gathering-device based on quadruple rotational symmetry structure.
Summary of the invention
The object of the invention is to meet electromagnetic energy Collection utilization device insensitive to TE, TM polarization, the electromagnetic demand of broad-angle-incident can be absorbed, propose a kind of Meta Materials electromagnetic energy gathering-device based on quadruple rotational symmetry structure.
For achieving the above object, the present invention just has following technical scheme:
A kind of Meta Materials electromagnetic energy gathering-device based on quadruple rotational symmetry structure, comprise underlying metal film from the bottom to top, middle lossy medium layer and top-level metallic film, described underlying metal film, bonded to each other between middle lossy medium layer and top-level metallic film.
Described underlying metal film is all-metal film, and described top-level metallic film comprises two concentric metal annulus, i.e. outer metal ring and interior metal ring, and four load resistances are evenly arranged in the gap between two metal rings.
The center of described outer metal ring and interior round metal Ring current distribution and middle lossy medium layer and the center of underlying metal film are point-blank, and the point midway on four corresponding middle lossy medium layer four limits of load resistance difference, form quadruple rotational symmetry structure.
The present invention compared with prior art, has following apparent outstanding substantive distinguishing features and remarkable technological progress:
The Meta Materials electromagnetic energy gathering-device that the present invention is based on quadruple rotational symmetry structure possesses high capacity absorptivity, polarize insensitive and wide-angle characteristic, insensitive to TE, TM polarization, when incidence angle is within 45 °, load energy absorptivity is up to more than 80%, can realize efficient electromagnetic energy and collect.In Internet of Things, radio-frequency (RF) identification, wireless sensor network and the field such as collection of energy and recovery, there is good application prospect.
Accompanying drawing explanation
Fig. 1 is front view of the present invention.
Fig. 2 is vertical view of the present invention.
Fig. 3 is the absorptivity schematic diagram of the present invention to TE, TM polarized electromagnetic wave of vertical incidence.
The absorptivity schematic diagram of Fig. 4 to be the present invention to oblique firing angle be TE, TM polarized electromagnetic wave of 15 °.
The absorptivity schematic diagram of Fig. 5 to be the present invention to oblique firing angle be TE, TM polarized electromagnetic wave of 30 °.
The absorptivity schematic diagram of Fig. 6 to be the present invention to oblique firing angle be TE, TM polarized electromagnetic wave of 45 °.
Embodiment
Below in conjunction with accompanying drawing and preferred embodiment, the present invention is further elaborated.
See Fig. 1 and Fig. 2, a kind of Meta Materials electromagnetic energy gathering-device based on quadruple rotational symmetry structure, comprise underlying metal film 1 from the bottom to top, middle lossy medium layer 2 and top-level metallic film 3, described underlying metal film 1, bonded to each other between middle lossy medium layer 2 and top-level metallic film 3.
Further, described underlying metal film 1 is all-metal film, and described top-level metallic film 3 comprises two concentric metal annulus, and namely outer metal ring 4 and interior metal ring 5, four load resistances 6 are evenly arranged in the gap between two metal rings.The center of the center of described outer metal ring 4 and interior metal ring 5 and the center of middle lossy medium layer 2 and underlying metal film 1 point-blank, and the point midway on four corresponding middle lossy medium layer 2 four limits of load resistance 6 difference, form quadruple rotational symmetry structure.
In the present embodiment, the material of underlying metal film 1, outer metal ring 4 and interior metal ring 5 is metallic coppers, and middle lossy medium layer 2 is RogersTMM10i media, and dielectric constant is 9.8, and loss tangent is 0.002, is of a size of 12mm*12mm*1mm.The length of underlying metal film 1 is equal with width respectively at the length of middle lossy medium layer 2 with width.The internal diameter of outer metal ring 4 is 4.2mm, and external diameter is 5mm, and the internal diameter of interior metal ring 5 is 2.275mm, and external diameter is 3.075mm.The resistance of load resistance 6 is 50 Ω, and the structure of described Meta Materials collection of energy is a cellular construction.
As the load energy absorption efficiency curve chart that Fig. 3 to Fig. 6 is the Meta Materials electromagnetic energy gathering-device based on quadruple rotational symmetry structure provided by the present invention, can find out that from four figure Meta Materials energy collecting device provided by the invention all reaches more than 80% at the load energy wave absorbing efficiency of 4GHz frequency to TE, TM polarized wave, simultaneously when incident angle is increased to 45 °, load energy absorptivity still can keep more than 80%.
Claims (3)
1. the Meta Materials electromagnetic energy gathering-device based on quadruple rotational symmetry structure, it is characterized in that, comprise underlying metal film (1) from the bottom to top, middle lossy medium layer (2) and top-level metallic film (3), described underlying metal film (1), bonded to each other between middle lossy medium layer (2) and top-level metallic film (3).
2. the Meta Materials electromagnetic energy gathering-device based on quadruple rotational symmetry structure according to claim 1, it is characterized in that, described underlying metal film (1) is all-metal film, described top-level metallic film (3) comprises two concentric metal annulus, i.e. outer metal ring (4) and interior metal ring (5), four load resistances (6) are evenly arranged in the gap between two metal rings.
3. the Meta Materials electromagnetic energy gathering-device based on quadruple rotational symmetry structure according to claim 2, it is characterized in that, the center of the center of described outer metal ring (4) and interior metal ring (5) and the center of middle lossy medium layer (2) and underlying metal film (1) point-blank, and the point midway on four corresponding middle lossy medium layer (2) four limits of load resistance (6) difference, form quadruple rotational symmetry structure.
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| CN201610093112.5A CN105552571B (en) | 2016-02-21 | 2016-02-21 | Meta Materials electromagnetic energy collection device based on quadruple rotational symmetry structure |
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| CN201610093112.5A CN105552571B (en) | 2016-02-21 | 2016-02-21 | Meta Materials electromagnetic energy collection device based on quadruple rotational symmetry structure |
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| CN105552571A true CN105552571A (en) | 2016-05-04 |
| CN105552571B CN105552571B (en) | 2019-02-01 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106099388A (en) * | 2016-06-24 | 2016-11-09 | 西安电子科技大学 | The micro-energy collecting device of ambient radio-frequency of surface complementarity structure is surpassed based on electromagnetism |
| CN106099389A (en) * | 2016-06-24 | 2016-11-09 | 西安电子科技大学 | The micro-energy collecting device of ambient radio-frequency on surface is surpassed based on electromagnetism |
| CN108879039A (en) * | 2018-06-28 | 2018-11-23 | 郑州大学 | A kind of bandstop filter based on Meta Materials |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103943968A (en) * | 2014-04-28 | 2014-07-23 | 浙江大学 | Perfect matching wave absorbing layer composed of sub-wavelength resonance units and active circuits |
| CN104638382A (en) * | 2015-02-02 | 2015-05-20 | 哈尔滨工程大学 | Dual-frequency metamaterial wave absorber |
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2016
- 2016-02-21 CN CN201610093112.5A patent/CN105552571B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103943968A (en) * | 2014-04-28 | 2014-07-23 | 浙江大学 | Perfect matching wave absorbing layer composed of sub-wavelength resonance units and active circuits |
| CN104638382A (en) * | 2015-02-02 | 2015-05-20 | 哈尔滨工程大学 | Dual-frequency metamaterial wave absorber |
Non-Patent Citations (2)
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| ZHAI HUIQING ET AL: "A new tunable dual-band metamaterial absorder with wide-angle TE and TM polarization stability", 《JOURNAL OF ELECTROMAGNETIC WAVES AND APPLICATIONS》 * |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106099388A (en) * | 2016-06-24 | 2016-11-09 | 西安电子科技大学 | The micro-energy collecting device of ambient radio-frequency of surface complementarity structure is surpassed based on electromagnetism |
| CN106099389A (en) * | 2016-06-24 | 2016-11-09 | 西安电子科技大学 | The micro-energy collecting device of ambient radio-frequency on surface is surpassed based on electromagnetism |
| CN106099388B (en) * | 2016-06-24 | 2018-11-20 | 西安电子科技大学 | Surpass the ambient radio-frequency micro-energy collection device of surface complementarity structure based on electromagnetism |
| CN106099389B (en) * | 2016-06-24 | 2019-04-23 | 西安电子科技大学 | Surpass the ambient radio-frequency micro-energy collection device on surface based on electromagnetism |
| CN108879039A (en) * | 2018-06-28 | 2018-11-23 | 郑州大学 | A kind of bandstop filter based on Meta Materials |
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