CN105762526A - Electromagnetic energy collection structure integrating surface plasmon coupler and gradient-index planar lens - Google Patents

Electromagnetic energy collection structure integrating surface plasmon coupler and gradient-index planar lens Download PDF

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Publication number
CN105762526A
CN105762526A CN201610093117.8A CN201610093117A CN105762526A CN 105762526 A CN105762526 A CN 105762526A CN 201610093117 A CN201610093117 A CN 201610093117A CN 105762526 A CN105762526 A CN 105762526A
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China
Prior art keywords
planar lens
super surface
energy collection
main unit
gradient
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Pending
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CN201610093117.8A
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Chinese (zh)
Inventor
周永金
杨柳
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University of Shanghai for Science and Technology
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University of Shanghai for Science and Technology
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Priority to CN201610093117.8A priority Critical patent/CN105762526A/en
Publication of CN105762526A publication Critical patent/CN105762526A/en
Pending legal-status Critical Current

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    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01QANTENNAS, i.e. RADIO AERIALS
    • H01Q15/00Devices for reflection, refraction, diffraction or polarisation of waves radiated from an antenna, e.g. quasi-optical devices
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01QANTENNAS, i.e. RADIO AERIALS
    • H01Q15/00Devices for reflection, refraction, diffraction or polarisation of waves radiated from an antenna, e.g. quasi-optical devices
    • H01Q15/0006Devices acting selectively as reflecting surface, as diffracting or as refracting device, e.g. frequency filtering or angular spatial filtering devices
    • H01Q15/0086Devices acting selectively as reflecting surface, as diffracting or as refracting device, e.g. frequency filtering or angular spatial filtering devices said selective devices having materials with a synthesized negative refractive index, e.g. metamaterials or left-handed materials
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01QANTENNAS, i.e. RADIO AERIALS
    • H01Q15/00Devices for reflection, refraction, diffraction or polarisation of waves radiated from an antenna, e.g. quasi-optical devices
    • H01Q15/02Refracting or diffracting devices, e.g. lens, prism

Abstract

The invention discloses an electromagnetic energy collection structure integrating a super surface and a gradient-index planar lens, comprising a dielectric substrate, a micro-strip line, a planar lens body, and a super surface. The micro-strip line is arranged on the upper surface of the dielectric substrate, the refractive index gradient of the planar lens body changes gradually, and the phase gradient of the super surface changes gradually. The planar lens body is a body unit structure matrix composed of more than one planar lens body units, the sizes of the planar lens body unit structures in the middle column symmetrically and gradually decrease from the horizontal axis of symmetry as the center to the upper and lower sides, and the planar lens body unit structures in the columns at the two sides are of the same size. Spatial electromagnetic wave can be effectively converted into surface wave and energy can be concentrated, so that efficient energy collection is realized. The electromagnetic energy collection structure has a good application prospect in such fields as the Internet of things, radio frequency identification (RFID), wireless sensor network (WSN) and energy collection and recovery.

Description

The electromagnetic energy collection structure of integrated surface phasmon bonder and graded index planar lens
Technical field
The present invention relates to a kind of electromagnetic energy collection structure, particularly relate to the electromagnetic energy collection device of a kind of integrated super surface and graded index planar lens, belong to Novel manual electromagnetic material, collection of energy and recovery technology field, be applied to the fields such as Internet of Things, RF identification (RFID) and wireless sensor network (WSN).
Background technology
As two big core technologies of Internet of Things, 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 have penetrated into every field: such as national defense safety, space exploration, environmental monitoring etc..RFID, WSN Node distribution scope is wide, quantity is many or works in untouchable special environment, and wireless energy supply technology is its life cycle of prolongation, widens the key technology of range of application.The conversion of environment power electromagnetic energy and Collection utilization technology collect the electromagnetic energy of free space, convert DC energy at receiving terminal.There is the features such as power density low (less than-30dBm) and excursion width, frequency band be many in environment electromagnetics energy.When low micropower inputs, the efficiency of rectification circuit can sharply decline (lower than 10%), thus reducing the energy conversion efficiency of whole system.
Novel manual electromagnetic material is research field emerging in electromagnetism, the construction unit of a series of designs be arranged to make up according to certain rule on sub-wavelength dimensions.The constitutive relation of Novel manual electromagnetic material can be changed by changing cellular construction design, provide a great convenience for Artificial Control electromagnetic propagation.Novel manual electromagnetic material obtained significant progress in recent years, is all widely used, is expected to be applied in electromagnetic energy collection system in stealthy, antenna works etc..Current spatial electromagnetic wave power density is low, not easily realizes efficient electromagnetic energy and collects.
Summary of the invention
Present invention aims to the defect of prior art, it is proposed to the electromagnetic energy collection structure of a kind of integrated super surface and graded index planar lens.
The electromagnetic energy collection structure of a kind of integrated super surface and graded index planar lens, including medium substrate, microstrip line, planar lens main body and super surface;Described microstrip line is arranged at the upper surface of described medium substrate, the refractive index gradient gradual change of described planar lens main body, the phase gradient gradual change on described super surface.
Further, described planar lens main body is the main unit structure matrix of more than one planar lens main unit structure composition;Described main unit structure matrix is arranged by middle column and both sides and forms;Described middle column is made up of the planar lens main unit structure more than string being symmetrical centre with vertically symmetrical axle, and the size of each planar lens main unit structure in described middle column reduces to upper and lower both sides reflected gradient centered by horizontal symmetry axis;Each row planar lens main unit structure that described both sides arrange beyond by middle column forms;Each planar lens main unit structure equivalently-sized in the row of described both sides.
Further, described planar lens main unit structure is square metal paster.
Further, described super surface is made up of the super surface cell structure of more than one genesis analysis;The refractive index of described each super surface cell structure 6 reduces near described planar lens to away from planar lens direction gradient gradual change.
Further, the structure of described each super surface cell structure is identical.
Further, described each super surface cell structure forms by the H type construction unit of more than one cross direction profiles, and in the super surface cell of described graded index, the size of each H type construction unit reduces near described planar lens to away from planar lens direction gradient.
The present invention compared with prior art, has following apparent substantive distinguishing features and notable technological progress: the humble electromagnetic energy in space is played convergence effect by the present invention, improves the input power of rectification circuit, collects thus realizing efficient electromagnetic energy.
Accompanying drawing explanation
Fig. 1 is the top view of the present invention;
Fig. 2 is the side view of the present invention;
Fig. 3 is the top view of planar lens main unit of the present invention;
Fig. 4 is the top view of the super surface cell of the present invention;
Wherein 1-medium substrate, 2-microstrip line, 3-planar lens main body, the super surface of 4-, 5-planar lens main unit structure, the super surface cell structure of 6-, 7-is positioned at the earth plate under medium substrate, 8-dielectric thickness, 9-metal thickness, the 10-planar lens main unit cycle, the length of side of 11-planar lens main unit square patch, the gap of 12-planar lens main unit paster, the cycle of the super surface cell structure of 13-, the height of the super surface cell structure of 14-, the width of vertical bonding jumper in 15-H type structure, the width of transverse metal bar in 16-H type structure, the height of transverse metal bar in 17-H type structure, the height of vertical bonding jumper in 18-H type structure.
Detailed description of the invention
Below in conjunction with accompanying drawing and preferred embodiment, the present invention is further elaborated.
Embodiment:
Referring to Fig. 1 and Fig. 2, the electromagnetic energy collection structure of a kind of integrated super surface and graded index planar lens, including medium substrate 1, microstrip line 2, planar lens main body 3, super surface 4 and earth plate 7;Described microstrip line 2 is arranged at the upper surface of described medium substrate 1, the refractive index gradient gradual change of described planar lens main body 3, the phase gradient gradual change on described super surface 4.
Further, described planar lens main body 3 is the main unit structure matrix of more than one planar lens main unit structure 5 composition;Described main unit structure matrix is arranged by middle column and both sides and forms;Described middle column is made up of the planar lens main unit structure 5 more than string being symmetrical centre with vertically symmetrical axle, and the size of each planar lens main unit structure 5 in described middle column reduces to upper and lower both sides reflected gradient centered by horizontal symmetry axis;Each row planar lens main unit structure 5 that described both sides arrange beyond by middle column forms;Each planar lens main unit structure 5 equivalently-sized in the row of described both sides.
Further, described planar lens main unit structure 5 is square metal paster.
Further, described super surface 4 is made up of the super surface cell structure 6 of more than one genesis analysis;The refractive index of described each super surface cell structure 6 reduces near described planar lens 5 to away from planar lens direction gradient gradual change.
Further, the structure of described each super surface cell structure 6 is identical.
Further, described each super surface cell structure 6 forms by the H type construction unit of more than one cross direction profiles, and in the super surface cell of described graded index, the size of each H type construction unit reduces near described planar lens to away from planar lens direction gradient.
In the present embodiment, middle column is by multiple square metal pasters surface metal structure that periodically ranks arrangement forms, and the size of square metal paster axially both sides gradual change from horizontal symmetry.Both sides arrange the square metal paster periodically ranks arrangement identical by size.This distribution makes incidence wave through lens post deflection, form two oblique surface waves, can realizing incident electromagnetic wave is played convergence effect, improve the power density of incident electromagnetic wave, the paster gap that the regulation and control of the refractive index of planar lens main body 3 are by square metal paster controls.As it is shown on figure 3, in the present embodiment, the square metal patch size 10 of middle column is 3.5mm, and 11 from 1.1mm to 3.2mm, and 12 from 0.3mm to 2.4mm, the difference according to working frequency range, it is possible to said structure parameter is adjusted.
The super surface 3 of the present invention is arranged to make up by certain by sub-wavelength dimensions " H " type construction unit, specifically, the size of " H " type structure is expert at, and arrangement is upper to be gradually reduced from close described planar lens main body 3 to away from described planar lens main body 3, along the upper size constancy of row arrangement, and then control the propagation of ripple.By arrangement size gradation distribution of being expert at, it is achieved graded--index planar waveguides, it is possible to convert spatial electromagnetic ripple to surface wave, in row arrangement, design size is constant can realize synchronous surface wave superposition further, and then strengthens the energy of surface wave.As shown in Figure 4, specifically, by 2, vertical and 1 transverse direction bonding jumper is constituted " H " type construction unit.
In the present embodiment, dielectric thickness 8 is 1mm, metal thickness 9 is 0.018mm, the cycle 13 of H type structure is 2.6mm, the height 14 of H type structure is that in 8.4mm, H type structure, the width that width 15 is transverse metal bar in 0.6mm, H type structure 16 of vertical bonding jumper is 1mm, in H type structure the height 17 of transverse metal bar be in 1mm, H type structure the height 18 of vertical bonding jumper for be gradient to 8.4mm from 2mm.
nullIntegrated surface phasmon bonder proposed by the invention and the electromagnetic energy collection structure of graded index planar lens,First spatial electromagnetic ripple is incident on the super surface 4 of gradual change phase place change,Owing to super surface 4 is by arrangement size gradation distribution of being expert at,Realize graded--index planar waveguides,Spatial electromagnetic ripple can be converted to surface wave,In row arrangement, design size is constant can realize synchronous surface wave superposition further,And then strengthen the energy of surface wave,Secondly the surface wave the strengthened planar lens main body 3 by graded index,Owing to the planar lens main body 3 of graded index can make incidence surface ripple deflect,Form two oblique surface waves,Can realize further incident electromagnetic wave is played convergence effect,It is expected to improve the power density of incident spatial electromagnetic ripple,Introduce one section of microstrip line 2 in planar lens main body 3 front end of graded index and the electromagnetic wave energy converged from the planar lens main body 3 of graded index is connect rectification circuit collection.The present invention, by overcoming the low not easily efficient collection of energy problem of traditional spatial electromagnetic wave power density, is expected to realize the efficient collection of energy by spatial electromagnetic ripple and convert spendable electric energy to.
The ultimate principle of the present invention and principal character and advantages of the present invention have more than been shown and described.Skilled person will appreciate that of the industry; the present invention is not restricted to the described embodiments; described in above-described embodiment and description is that principles of the invention is described; without departing from the spirit and scope of the present invention; the present invention also has various changes and modifications, and these changes and improvements both fall within the claimed scope of the invention.Claimed scope is defined by appending claims and equivalent thereof.

Claims (3)

1. the electromagnetic energy collection structure of an integrated super surface and graded index planar lens, it is characterised in that: include medium substrate (1), microstrip line (2), planar lens main body (3) and super surface (4);Described microstrip line (2) is arranged at the upper surface of described medium substrate (1), the refractive index gradient gradual change of described planar lens main body 3, the phase gradient gradual change of described super surface (4).
2. the electromagnetic energy collection structure of integrated super surface according to claim 1 and graded index planar lens, it is characterised in that: the main unit structure matrix that described planar lens main body (3) forms for more than one planar lens main unit structure (5);Described main unit structure matrix is arranged by middle column and both sides and forms;Described middle column is made up of planar lens main unit structure (5) more than string being symmetrical centre with vertically symmetrical axle, and the size of each planar lens main unit structure 5 in described middle column reduces to upper and lower both sides reflected gradient centered by horizontal symmetry axis;Each row planar lens main unit structure (5) that described both sides arrange beyond by middle column form;Each planar lens main unit structure (5) equivalently-sized in the row of described both sides.
3. the electromagnetic energy collection structure of integrated super surface according to claim 1 and graded index planar lens, it is characterised in that: described super surface (4) is made up of the super surface cell structure 6 of more than one genesis analysis;The refractive index of described each super surface cell structure (6) reduces near described planar lens 5 to away from planar lens direction gradient gradual change.
CN201610093117.8A 2016-02-21 2016-02-21 Electromagnetic energy collection structure integrating surface plasmon coupler and gradient-index planar lens Pending CN105762526A (en)

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Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110637393A (en) * 2017-06-05 2019-12-31 日立汽车系统株式会社 Antenna, array antenna, radar device and vehicle-mounted system
CN111638569A (en) * 2020-07-17 2020-09-08 中国人民解放军空军工程大学 Radio frequency inductive coupling plasma superposition phase gradient super-surface wave-absorbing structure
CN112582803A (en) * 2019-09-30 2021-03-30 Oppo广东移动通信有限公司 Array lens, lens antenna, and electronic apparatus
WO2021063182A1 (en) * 2019-09-30 2021-04-08 Oppo广东移动通信有限公司 Lens array, lens antenna, and electronic device
CN112751207A (en) * 2019-10-31 2021-05-04 Oppo广东移动通信有限公司 Lens structure, lens antenna and electronic equipment
US11828981B2 (en) 2022-03-17 2023-11-28 Honeywell International Inc. Optical device with graded index planar lens

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CN204088537U (en) * 2014-09-24 2015-01-07 上海大学 A kind of plane compact type multichannel channel-splitting filter based on imitative surface phasmon

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Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110637393A (en) * 2017-06-05 2019-12-31 日立汽车系统株式会社 Antenna, array antenna, radar device and vehicle-mounted system
CN112582803A (en) * 2019-09-30 2021-03-30 Oppo广东移动通信有限公司 Array lens, lens antenna, and electronic apparatus
WO2021063182A1 (en) * 2019-09-30 2021-04-08 Oppo广东移动通信有限公司 Lens array, lens antenna, and electronic device
CN112751207A (en) * 2019-10-31 2021-05-04 Oppo广东移动通信有限公司 Lens structure, lens antenna and electronic equipment
CN112751207B (en) * 2019-10-31 2022-08-12 Oppo广东移动通信有限公司 Lens structure, lens antenna and electronic equipment
CN111638569A (en) * 2020-07-17 2020-09-08 中国人民解放军空军工程大学 Radio frequency inductive coupling plasma superposition phase gradient super-surface wave-absorbing structure
CN111638569B (en) * 2020-07-17 2022-04-22 中国人民解放军空军工程大学 Radio frequency inductive coupling plasma superposition phase gradient super-surface wave-absorbing structure
US11828981B2 (en) 2022-03-17 2023-11-28 Honeywell International Inc. Optical device with graded index planar lens

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Application publication date: 20160713