CN105552571B - Meta Materials electromagnetic energy collection device based on quadruple rotational symmetry structure - Google Patents
Meta Materials electromagnetic energy collection device based on quadruple rotational symmetry structure Download PDFInfo
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- CN105552571B CN105552571B CN201610093112.5A CN201610093112A CN105552571B CN 105552571 B CN105552571 B CN 105552571B CN 201610093112 A CN201610093112 A CN 201610093112A CN 105552571 B CN105552571 B CN 105552571B
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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 kind of Meta Materials electromagnetic energy collection device based on quadruple rotational symmetry structure, it from the bottom to top include underlying metal film, intermediate lossy medium layer and top-level metallic film are bonded to each other between the underlying metal film, intermediate lossy medium layer and top-level metallic film.Meta Materials electromagnetic energy collection device provided by the invention has high load absorptivity, polarize insensitive and wide-angle characteristic, it is able to achieve high efficiency energy collection, is had a good application prospect in the fields such as Internet of Things, radio frequency identification (RFID), wireless sensor network (WSN) and collection of energy and recycling.
Description
Technical field
The present invention relates to a kind of Meta Materials electromagnetic energy collection device based on quadruple rotational symmetry structure, belongs to novel people
Work electromagnetic material, collection of energy and recycling field can be applied to Internet of Things, radio frequency identification (RFID) and wireless sensor network
(WSN) fields such as.
Background technique
As two big core technologies of Internet of Things, radio frequency identification (RFID) and wireless sensor network (WSN) have obtained state
The highest attention of Ji Shang academia and business circles, department of national governments also actively push forward the development of Internet of Things.The objects such as WSN and RFID
Networking technology has penetrated into every field: such as national defense safety, space exploration, environmental monitoring.RFID, WSN Node distribution model
Enclose that wide, quantity is more or works in untouchable particular surroundings, wireless energy supply technology is extension its life cycle, widens
The key technology of application range.To improve energy conversion efficiency, it is desirable that electromagnetic energy Collection utilization device is to transverse electric
The polarization of (Transverse Electric, TE), horizontal magnetic (Transverse Magnetic, TM) is insensitive, can absorb wide angle
Spend incident electromagnetic wave.
Meta Materials refer to the artificial composite structure or composite wood of some extraordinary physical properties not having with natural material
Material.It is as a kind of new artificial electromagnetic material, simple, ultra-thin, the small in size and energy per unit area collection efficiency with structure
High advantage, Novel manual electromagnetic material had obtained significant progress in recent years, it is stealthy, in terms of have extensively
Application, for the demand of electromagnetic energy collection device, the invention proposes the super materials based on quadruple rotational symmetry structure
Expect electromagnetic energy collection device.
Summary of the invention
It is insensitive to TE, TM polarization it is an object of the invention to meet electromagnetic energy Collection utilization device, width can be absorbed
The demand of the electromagnetic wave of angle incidence proposes a kind of Meta Materials electromagnetic energy collection device based on quadruple rotational symmetry structure.
In order to achieve the above objectives, the present invention just has following technical solution:
A kind of Meta Materials electromagnetic energy collection device based on quadruple rotational symmetry structure includes underlying metal from the bottom to top
Film, intermediate lossy medium layer and top-level metallic film, the underlying metal film, intermediate lossy medium layer and top-level metallic are thin
It is bonded to each other between film.
The underlying metal film is all-metal film, and the top-level metallic film includes two concentric metal annulus, i.e.,
Outer metal ring and interior metal ring, four load resistances are evenly arranged in the gap between two metal rings.
The center of the outer metal ring and interior metal ring and the center of intermediate lossy medium layer and underlying metal are thin
Point-blank, and four load resistances respectively correspond the midpoint on intermediate four side of lossy medium layer, shape at the center of film
At quadruple rotational symmetry structure.
The present invention compared with prior art, have following obvious prominent substantive distinguishing features and significant technology into
Step:
The present invention is based on the Meta Materials electromagnetic energy collection devices of quadruple rotational symmetry structure to have high load absorptivity, pole
Change insensitive and wide-angle characteristic, polarizes to TE, TM insensitive, incidence angle load energy absorptivity when within 45 ° is up to
80% or more, it is able to achieve efficient electromagnetic energy and collects.Internet of Things, radio frequency identification, wireless sensor network and collection of energy with
The fields such as recycling have a good application prospect.
Detailed description of the invention
Fig. 1 is main view of the invention.
Fig. 2 is top view of the invention.
Fig. 3 is absorptivity schematic diagram of the present invention to TE, TM polarized electromagnetic wave of vertical incidence.
Fig. 4 is the absorptivity schematic diagram for TE, TM polarized electromagnetic wave that the present invention is 15 ° to oblique firing angle.
Fig. 5 is the absorptivity schematic diagram for TE, TM polarized electromagnetic wave that the present invention is 30 ° to oblique firing angle.
Fig. 6 is the absorptivity schematic diagram for TE, TM polarized electromagnetic wave that the present invention is 45 ° to oblique firing angle.
Specific embodiment
With reference to the accompanying drawing and preferred embodiment, the present invention is further elaborated.
Referring to Fig. 1 and Fig. 2, a kind of Meta Materials electromagnetic energy collection device based on quadruple rotational symmetry structure, by down toward
Upper includes underlying metal film 1, intermediate lossy medium layer 2 and top-level metallic film 3, the underlying metal film 1, intermediate loss
It is bonded to each other between dielectric layer 2 and top-level metallic film 3.
Further, the underlying metal film 1 is all-metal film, and the top-level metallic film 3 includes two concentric
Metal ring, i.e., outer metal ring 4 and interior metal ring 5, four load resistances 6 are evenly arranged between two metal rings
In gap.The center and underlying metal of the center of the outer metal ring 4 and interior metal ring 5 and intermediate lossy medium layer 2
Point-blank, and four load resistances 6 respectively correspond the middle point on 2 four side of intermediate lossy medium layer at the center of film 1
It sets, forms quadruple rotational symmetry structure.
The material of underlying metal film 1, outer metal ring 4 and interior metal ring 5 is metallic copper in the present embodiment, centre damage
Consuming dielectric layer 2 is Rogers TMM 10i medium, dielectric constant 9.8, loss tangent 0.002, having a size of 12mm*
12mm*1mm.The length and width of underlying metal film 1 is equal respectively at the length and width of intermediate lossy medium layer 2.Outer gold
The internal diameter for belonging to annulus 4 is 4.2mm, and outer diameter 5mm, the internal diameter of interior metal ring 5 is 2.275mm, outer diameter 3.075mm.Load
The resistance value of resistance 6 is 50 Ω, and the structure of the Meta Materials collection of energy is a cellular construction.
If Fig. 3 to Fig. 6 is that the Meta Materials electromagnetic energy provided by the present invention based on quadruple rotational symmetry structure collects dress
The load energy absorption efficiency curve graph set, it can be seen that Meta Materials energy collecting device provided by the invention exists from four figures
80% or more is reached to the load energy wave absorbing efficiency of TE, TM polarized wave at 4GHz frequency point, while when incident angle increases to
At 45 °, load energy absorptivity is still able to maintain 80% or more.
Claims (1)
1. a kind of Meta Materials electromagnetic energy collection device based on quadruple rotational symmetry structure, which is characterized in that wrap from the bottom to top
It includes underlying metal film (1), intermediate lossy medium layer (2) and top-level metallic film (3), the underlying metal film (1), centre
It is bonded to each other between lossy medium layer (2) and top-level metallic film (3)；The underlying metal film (1) is all-metal film, institute
Stating top-level metallic film (3) includes two concentric metal annulus, i.e., outer metal ring (4) and interior metal ring (5), four loads
Resistance (6) is evenly arranged in the gap between two metal rings, and the length and width of underlying metal film (1) is respectively in
Between lossy medium layer (2) length and width it is equal, the structure of the Meta Materials energy collecting device is a cellular construction；Institute
State the center of outer metal ring (4) and interior metal ring (5) and center and the underlying metal film of intermediate lossy medium layer (2)
(1) point-blank, and four load resistances (6) respectively correspond the midpoint on intermediate (2) four side of lossy medium layer at center
Position forms quadruple rotational symmetry structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610093112.5A CN105552571B (en) | 2016-02-21 | 2016-02-21 | Meta Materials electromagnetic energy collection device based on quadruple rotational symmetry structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
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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 CN105552571A (en) | 2016-05-04 |
| CN105552571B true CN105552571B (en) | 2019-02-01 |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| 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 |
| 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 |
|---|---|---|---|---|
| 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 |
-
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)
| Title |
|---|
| A new tunable dual-band metamaterial absorder with wide-angle TE and TM polarization stability;Zhai Huiqing et al;《JOURNAL OF ELECTROMAGNETIC WAVES AND APPLICATIONS》;20150630;第29卷(第6期);774-785 |
| 一种宽带小型化超材料吸波体设计;陈强等;《2015年全国微波毫米波会议论文集》;20150530;文章第1580页左栏-1580页右栏，第1581页右栏及附图1,3 |
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