CN113300115A - Electromagnetic metamaterial lens unit and metamaterial lens antenna - Google Patents
Electromagnetic metamaterial lens unit and metamaterial lens antenna Download PDFInfo
- Publication number
- CN113300115A CN113300115A CN202110560870.4A CN202110560870A CN113300115A CN 113300115 A CN113300115 A CN 113300115A CN 202110560870 A CN202110560870 A CN 202110560870A CN 113300115 A CN113300115 A CN 113300115A
- Authority
- CN
- China
- Prior art keywords
- metamaterial lens
- semi
- antenna
- metamaterial
- double
- 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.)
- Granted
Links
- 239000002184 metal Substances 0.000 claims abstract description 59
- 229910052751 metal Inorganic materials 0.000 claims abstract description 59
- 239000000758 substrate Substances 0.000 claims abstract description 27
- 210000000225 synapse Anatomy 0.000 claims abstract description 11
- 239000004809 Teflon Substances 0.000 claims description 3
- 229920006362 Teflon® Polymers 0.000 claims description 3
- 229920001343 polytetrafluoroethylene Polymers 0.000 claims description 3
- 239000004810 polytetrafluoroethylene Substances 0.000 claims description 3
- 239000010410 layer Substances 0.000 description 49
- 230000005540 biological transmission Effects 0.000 description 13
- 230000010363 phase shift Effects 0.000 description 12
- 238000004519 manufacturing process Methods 0.000 description 7
- 238000010586 diagram Methods 0.000 description 6
- 238000004088 simulation Methods 0.000 description 6
- 238000013461 design Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 5
- 230000008901 benefit Effects 0.000 description 4
- 230000005855 radiation Effects 0.000 description 4
- 230000009286 beneficial effect Effects 0.000 description 3
- 239000002355 dual-layer Substances 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000010295 mobile communication Methods 0.000 description 2
- -1 polytetrafluoroethylene Polymers 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 230000003111 delayed effect Effects 0.000 description 1
- 238000012938 design process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 239000002356 single layer Substances 0.000 description 1
Images
Classifications
-
- 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
- H01Q15/0086—Devices 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
-
- 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
- H01Q15/00—Devices for reflection, refraction, diffraction or polarisation of waves radiated from an antenna, e.g. quasi-optical devices
- H01Q15/02—Refracting or diffracting devices, e.g. lens, prism
-
- 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
- H01Q15/02—Refracting or diffracting devices, e.g. lens, prism
- H01Q15/08—Refracting or diffracting devices, e.g. lens, prism formed of solid dielectric material
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D30/00—Reducing energy consumption in communication networks
- Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks
Landscapes
- Aerials With Secondary Devices (AREA)
Abstract
The invention relates to an electromagnetic metamaterial lens unit and a metamaterial lens antenna, wherein the lens unit comprises a medium substrate layer and a double-layer metal fork type resonance structure, the double-layer metal fork type resonance structure comprises two semi-surrounding frame structures, and the two semi-surrounding frame structures are respectively and oppositely arranged at the top and the bottom of the medium substrate layer to form the double-layer metal fork type resonance structure; each semi-surrounding frame structure comprises a semi-surrounding metal structure wire with an opening on one side similar to a U shape, and a synapse is arranged in the middle of the semi-surrounding metal structure wire on the side opposite to the opening and extends inwards. The invention adopts a double-layer resonance structure, realizes full phase adjustment in a frequency band by adjusting the parameters of the resonance structure, can adjust the phase of incident electromagnetic waves, improves the integral gain of the metamaterial lens antenna, and realizes the functions of beam focusing, scanning and the like by array arrangement.
Description
Technical Field
The invention relates to the field of 5G mobile communication, in particular to the field of 5G base stations, and particularly relates to a low-profile low-loss full-phase-adjustable electromagnetic metamaterial lens unit and a metamaterial lens antenna.
Background
Generally, in the field of antenna base stations, with the gradual increase of 5G application requirements, 5G base stations usually adopt a large-scale MIMO technology to overcome the large free space path loss of a millimeter wave frequency band. In some special areas such as long and narrow corridor spaces, the metamaterial lens antenna can realize high gain and wide-angle scanning of beams in the area, and can overcome the problems of large power consumption, high cost and the like of a large-scale MIMO system, so that the design of the metamaterial lens becomes a research focus. In the fifth generation mobile communication technology (5G), the metamaterial lens has a good focusing effect on the beam of the feed source antenna, and the directivity and gain of the antenna can be effectively improved.
The prior art discloses that a metamaterial lens unit is a yerroad cooling cross unit, a metal resonance structure is attached to a dielectric substrate, four layers of dielectric substrates are separated by air media, and the unit can realize phase shift of more than 360 degrees. A metamaterial lens consisting of 72 x 36 lens units is used for converting spherical waves into plane waves by adjusting the phase of an incoming wave, so that the antenna gain is improved. However, the metamaterial unit involved in the metamaterial unit is complex in structure, the multi-layer structure is not beneficial to rapid simulation of the metamaterial lens, the air space is not beneficial to accurate manufacturing of the lens, and manufacturing cost is high. The prior art also discloses a metamaterial unit for realizing 360-degree phase shift by using a symmetrical circular ring-shaped double-layer metal structure, and the unit has the advantages that a full-phase shift function is realized by using the double-layer structure, and the simulation and manufacturing and processing difficulties of a metamaterial lens are reduced, but the unit disclosed by the prior art has higher transmission loss and is only superior to 2.3dB in the best state.
In summary, the metamaterial lens is designed through array arrangement, spherical waves radiated by the feed antenna are converted into plane waves in a phase compensation mode, and therefore the metamaterial lens antenna obtains higher gain. The single-layer or double-layer metamaterial unit for realizing phase shift by adjusting a single parameter in the resonant structure can not realize full phase adjustment of more than 360 degrees theoretically, so that four or more layers of metamaterial units are generally adopted for realizing phase shift of more than 360 degrees, and a metamaterial lens is designed by the unit. The metamaterial lens is complex in structure and high in manufacturing cost. The metamaterial unit manufactured by using a few layers of metal structures can realize 360-degree phase shift adjustment by adjusting and combining parameters of different parts of the metal structures, but the transmission loss of the metamaterial unit is high, and the metamaterial unit is not beneficial to improving the performances of metamaterial lens antenna gain and the like.
Disclosure of Invention
In view of the above problems, the present invention provides a low-profile low-loss full-phase adjustable electromagnetic metamaterial lens unit and a metamaterial lens antenna.
In order to achieve the purpose, the invention adopts the following technical scheme:
in a first aspect, the invention provides an electromagnetic metamaterial lens unit, which includes a dielectric substrate layer and a double-layer metal fork type resonant structure, wherein,
the double-layer metal fork type resonance structure comprises two semi-surrounding frame structures, and the two semi-surrounding frame structures are respectively and oppositely arranged at the top and the bottom of the medium base plate to form the double-layer metal fork type resonance structure;
each semi-surrounding frame structure comprises a semi-surrounding metal structure wire with an opening on one side similar to a U shape, and a synapse is arranged in the middle of the semi-surrounding metal structure wire on the side opposite to the opening and extends inwards.
The electromagnetic metamaterial lens unit is characterized in that the parameters of the double-layer metal fork type resonance structure comprise the length r of a semi-enclosed metal structure wireaSemi-surrounding metal structureLine width of rb，rb＝raAnd/2 +0.4mm, the line width of the semi-surrounding metal structure, the width of the synapse and the length of the synapse are w and g.
The electromagnetic metamaterial lens unit is characterized in that a medium matching layer is respectively arranged above and below the double-layer metal fork type resonance structure, and resonance impedance matching of the lens unit is realized by arranging the medium matching layer.
In the electromagnetic metamaterial lens unit, the dielectric substrate layer and the dielectric matching layer are made of F4B polytetrafluoroethylene dielectric, the dielectric constant of the dielectric substrate layer and the dielectric matching layer is 2.2, and the loss tangent value of the dielectric substrate layer and the dielectric matching layer is 0.001.
In a second aspect, the invention further provides a metamaterial lens antenna, which includes a feed antenna, and a metamaterial lens is correspondingly arranged below the feed antenna, wherein the metamaterial lens is formed by periodically arranging the electromagnetic metamaterial lens units of the first aspect of the invention.
The metamaterial lens antenna further comprises a dielectric substrate, and a plurality of metal radiation patch units are arranged at the bottom of the dielectric substrate at intervals.
The metamaterial lens antenna is characterized in that the dielectric substrate is made of polytetrafluoroethylene dielectric, the dielectric constant is 2.2, and the loss tangent is 0.0023.
The metamaterial lens antenna is characterized in that the distance between the electromagnetic metamaterial lens units is slightly smaller than one half of the wavelength of air with the resonant frequency.
The metamaterial lens antenna is characterized in that the distance between the feed source antenna and the metamaterial lens is set to be 50 mm.
The metamaterial lens antenna is characterized in that different structures are arranged in the vertical direction of the electromagnetic metamaterial lens unit in the metamaterial lens according to phase requirements, and the quantity and the structure of each row in the horizontal direction are the same.
Due to the adoption of the technical scheme, the invention has the following advantages:
1. the dual-layer metal fork type resonant structure is adopted, full phase adjustment in a frequency band is realized by adjusting parameters of the dual-layer metal fork type resonant structure, the phase of incident electromagnetic waves can be adjusted, the integral gain of the metamaterial lens antenna is improved, and the functions of wave beam focusing, scanning and the like are realized through array arrangement;
2. the double-layer metal fork type resonance structure reduces the complexity and the section of the lens design, can effectively save the simulation time and the manufacturing cost, and realizes full-phase shift at a 24.25GHz-27.5GHz frequency band (5G network FR2 frequency band, frequency band number n258) by utilizing the double-layer metal fork type resonance structure;
3. according to the metamaterial lens antenna, the medium matching layer is introduced to keep good transmission loss performance, the transmission loss is less than 0.5dB in the whole frequency band, the transmission loss of the metamaterial unit in the frequency band is optimized, and the whole performance of the metamaterial lens antenna is improved;
in conclusion, the low-profile low-loss full-phase adjustable electromagnetic metamaterial lens unit provided by the invention can be well applied to the design and manufacture of metamaterial lens antennas.
Drawings
Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The drawings are only for purposes of illustrating the preferred embodiments and are not to be construed as limiting the invention. Like reference numerals refer to like parts throughout the drawings. In the drawings:
FIG. 1 is an exploded view of an electromagnetic metamaterial lens unit according to an embodiment of the present invention;
FIG. 2 is a schematic diagram of a resonant structure of an electromagnetic metamaterial lens unit according to an embodiment of the present invention, wherein (a) is a top view and (b) is a side view;
FIG. 3 is a schematic diagram of a phase shift curve of a metamaterial unit with different parameters according to an embodiment of the present invention, wherein (a) is ra-∠S21(b) is g-angle S21，raThe length of the periphery of the U-shaped structure (see fig. 2(a)), g is the internal synapse length of the U-shaped structure, and is less than S21Is the phase shift angle;
FIG. 4 illustrates an exemplary metamaterial unit transportAnd a reflection coefficient diagram, wherein (a) is different from raLower reflection coefficient, (b) is reflection coefficient and transmission coefficient at different frequencies.
FIG. 5 is a schematic diagram of a metamaterial lens antenna structure fabricated by a lens unit according to an embodiment of the invention;
FIG. 6 is a schematic diagram of a metamaterial lens antenna according to an embodiment of the present invention;
FIG. 7 is a diagram illustrating the scanning performance of a metamaterial lens antenna made by the lens unit according to the embodiment of the present invention.
Detailed Description
Exemplary embodiments of the present invention will be described in more detail below with reference to the accompanying drawings. While exemplary embodiments of the invention are shown in the drawings, it should be understood that the invention can be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art.
It is to be understood that the terminology used herein is for the purpose of describing particular example embodiments only, and is not intended to be limiting. As used herein, the singular forms "a", "an" and "the" may be intended to include the plural forms as well, unless the context clearly indicates otherwise. The terms "comprises," "comprising," "including," and "having" are inclusive and therefore specify the presence of stated features, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, steps, operations, elements, components, and/or groups thereof. The method steps, processes, and operations described herein are not to be construed as necessarily requiring their performance in the particular order described or illustrated, unless specifically identified as an order of performance. It should also be understood that additional or alternative steps may be used.
For convenience of description, spatially relative terms, such as "inner", "outer", "lower", "upper", and the like, may be used herein to describe one element or feature's relationship to another element or feature as illustrated in the figures. Such spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures.
The low-profile low-loss full-phase-adjustable electromagnetic metamaterial lens unit provided by the invention realizes the adjustment of the electromagnetic wave beam phase of the feed source antenna through the double-layer metal fork type resonance structure, thereby achieving the purposes of improving the performances of metamaterial lens antenna gain and the like. Meanwhile, the transmission loss of the electromagnetic metamaterial lens unit is optimized, the gain of the metamaterial lens antenna can be further improved, and the active effect of improving the scanning angle of antenna beams can be achieved.
Example 1
As shown in fig. 1 and fig. 2, the electromagnetic metamaterial lens unit provided in this embodiment includes:
the dielectric substrate layer 1, the thickness of the dielectric substrate layer 1 is defined as h in this embodiment, and h is 1.5mm in this embodiment, which is taken as an example and not limited thereto.
A double-layer metal fork type resonance structure 2; wherein:
the double-layer metal fork type resonance structure 2 comprises two half-surrounding frame structures 21 and 22, wherein the two half-surrounding frame structures 21 and 22 are respectively and oppositely printed at the top and the bottom of the medium base plate 1 to form the double-layer metal fork type resonance structure 2. The structures of the two half-surrounding frame structures 21 and 22 are the same, and a specific structure of the half-surrounding frame structure 21 will be described.
The semi-surrounding frame structure 21 is a U-shaped semi-surrounding metal structure line 211 with one side open, and a synapse 212 extends inside the semi-surrounding metal structure line 211 opposite to the open side. Wherein, the relevant parameter setting of double-deck metal forked type resonant structure 2 includes: the length of the semi-surrounding metal structure line 211 is raThe width of the semi-surrounding metal structure line 211 is rb，rb＝raA width of 0.4mm, a width of the semi-surrounded metal structure line 211 and a width of the synapse 212 are both w, and a length of the synapse 212 is g. Preferably, the material of the semi-surrounding frame structure of the present embodiment may be 0.035mm copper, wherein the parameters in the present embodiment are as follows: g 0.2mm, w 0.2mm, raBy way of example, and not limitation, 5mm, by varying raAnd g, the phase of the electromagnetic metamaterial lens unit can be adjusted.
As shown in fig. 2, a solid line in the figure is a profile of a metal structure line half-surrounded on the front side of the double-layer metal fork type resonant structure, and a dotted line is a profile of a metal structure on the back side of the double-layer metal fork type resonant structure. By adjusting raThe size of the parameter is adjusted for the phase shifting capability of the lens unit. To further enhance the phase shifting capability of the lens unit, at raAfter the adjustment is finished, the magnitude of the parameter g is adjusted in turn, the incident beam generates phase delay through a medium, and after the double-layer metal fork type resonance structure 2 is added to the medium substrate layer 1, different double-layer metal fork type resonance structures 2 can influence the medium substrate layer 1 to have different dielectric constants at different positions, so that different refractive indexes are arranged at different positions, when the incident beam passes through the medium substrate layer 1 added with the metal structure, the time of the incident beam passing through each part of the medium substrate layer 1 is different, so that the delayed phase is also different, and the effect of adjusting the beam phase is achieved. Different raAnd g, the main influence is the refractive index of each part of the dielectric substrate layer 1. The lens unit can be ensured to have the capacity of adjusting the phase more than 360 degrees through the adjustment of the two parameters.
In some implementations of this embodiment, to solve the problem of high transmission loss of the metamaterial lens unit, dielectric matching layers 31 and 32 are respectively disposed on the top layer and the bottom layer of the dual-layer metal fork-type resonant structure 2. The medium matching layer does not carry out any structural design operation, and the design complexity is reduced. Through setting up the dielectric matching layer, realize lens unit resonance impedance matching, because air dielectric wave impedance is different with double-deck metal forked type resonant structure wave impedance, can produce impedance mismatch when the wave beam is incident, through the mode that adds the dielectric matching layer, can make impedance matching between air dielectric and the double-deck metal forked type resonant structure, effectively reduce the transmission loss of super material lens unit, promote lens unit and super material lens wholeness ability, wherein, define the dielectric matching layer thickness in this embodiment and be hm。
In some implementations of this embodiment, the dielectric substrate layer 1 and the dielectric matching layers 31 and 32 are both F4B teflon media with a dielectric constant of 2.2 and a loss tangent of 0.001.
In summary, the invention realizes the full-phase adjustability of the electromagnetic metamaterial lens unit with low cost and low complexity, and the full-phase adjustability is realized by adjusting the unit parameter r in fig. 2aAnd g, the phase shift ranges of the electromagnetic metamaterial lens unit shown in FIG. 3 are (-175 degrees, 140 degrees (-235 degrees, -175 degrees), and two parameters raAnd g, the phase shift capacity of the superposition phase can be adjusted to be more than 360 degrees, and the unit structure of the electromagnetic metamaterial lens is a double-layer metal fork type resonance structure, so that the rapid simulation and the large-scale section metamaterial lens manufacturing are facilitated. Furthermore, on the premise of ensuring the full-phase shift capability, the invention optimizes the transmission loss performance of the metamaterial unit, the reflection coefficient curve of the working frequency band is shown in fig. 4(a), and the transmission coefficient curve of the metamaterial lens unit is shown in fig. 4 (b); the metamaterial lens unit has a parameter r in a frequency band of 24.25GHz-27.5GHzaThe value is within the range of 2.5mm-5mm, the reflection loss is more than 10dB, the transmission loss is less than 0.5dB, and good transmission performance is shown.
Example 2
As shown in fig. 5, the metamaterial lens antenna manufactured based on the metamaterial lens unit includes a feed antenna, and metamaterial lenses are correspondingly disposed below the feed antenna, wherein the metamaterial lenses are formed by periodically arranging lens units. For example, the distance between the feed antenna and the metamaterial lens may be set to be 50mm, but is not limited thereto.
In some implementations of this embodiment, the feed antenna includes a dielectric substrate 4, a metal radiation patch unit 41 is disposed at the bottom of the dielectric substrate 4, the number of the metal radiation patch units 41 of this embodiment is 4, the top of the antenna is a 1 × 4 feed antenna array, and for this example and without limitation, the distance between the metal radiation patch units 41 is 5.65mm, which is about half of the air wavelength of 26 GHz.
In some implementations of this embodiment, the dielectric substrate 4 is a teflon dielectric with a dielectric constant of 2.2 and a loss tangent of 0.0023.
In some implementations of this embodiment, the metamaterial lens unit period length p is 5.2mm, slightly less than one-half of the wavelength of air at the resonant frequency. As shown in fig. 5, the unit structure of the one-dimensional metamaterial lens array in the vertical direction is selected according to the phase adjustment curve, and is kept consistent in the horizontal direction, where the vertical direction is the x direction in fig. 5 and the horizontal direction is the y direction in fig. 5. The phase adjustment curve is shown in FIG. 3, which shows that different raThe influence of the length of g on the phase is determined by selecting two parameters raAnd g, different phase shift adjusting angles can be obtained, so that the phase of the incident beam is adjusted. Wherein, the metamaterial lens is composed of a plurality of lens units, and the lens units in the vertical direction are provided with different structures (adjusting r) according to the phase requirementsaAnd g), each column in the horizontal direction is the same, and the beam scanning effect is maintained, the specific principle is shown in fig. 6:
the phase compensation quantity gradient of the planar lens in the x-axis direction in the drawing is changed, the y-axis direction in the drawing is kept unchanged, at the moment, the feed source antenna can obtain the continuously adjustable wave beam which is the same as that of the traditional wave beam scanning array antenna in the x-axis direction, and meanwhile, due to the focusing effect of the planar wave in the y-axis direction, the integral gain of the antenna is improved to a certain extent. The planar lens which is in gradient change in a single direction in the plane of the lens and keeps consistent in the other direction is called a one-dimensional metamaterial planar lens. As shown in fig. 5, in the design process of the structured lens, only phase compensation required by a column of phase shift units in the x-axis direction needs to be calculated, and the unit structure size (corresponding to different r) is determined through a phase shift curveaAnd g), and expanded along the y-axis direction. The phase compensation requirement calculation method comprises the following steps:
phase difference from i point to feed/focus F in x-axis direction:
wherein,
is the distance between two points, λ0Is a free space electromagnetic wave wavelength, f isA focal length.
In order to ensure that all the electromagnetic wave rays passing through the lens have the same phase, the phase compensation provided by the i point of the planar lens is as follows:
the invention adopts different metamaterial lens unit structures, compensates the incoming wave phase of the feed source antenna, and converts spherical waves generated by the feed source antenna into plane waves in the vertical direction, thereby improving the integral gain of the metamaterial lens antenna and keeping beam scanning in the horizontal direction. In this embodiment, a 26GHz frequency point is selected for simulation, 4 ports of the feed antenna are excited, and phase differences of 0 °, ± 50 °, ± 100 ° are added to the 4 ports, respectively, so as to implement horizontal direction beam scanning. Spherical waves generated by the feed source antenna are converted into plane waves through the metamaterial lens array, and the overall gain of the metamaterial lens antenna is improved. The simulation result is shown in fig. 6, when a phase difference of 0 ° is added between the ports of the feed antenna, the antenna gain is 20.45dBi, and the metamaterial lens antenna gains about 9dB higher than that of the feed antenna array. The antenna gains were 20dBi and 20.2dBi with the addition of a phase difference of-50 ° and 50 °, and the scan angle was 16 °. When a phase difference of-100 ° and 100 ° was added, the antenna gains were 19.1dBi and 19.2dBi, and the scanning angle was 30 °.
Finally, it should be noted that the above embodiments are only used for illustrating the technical solutions of the present invention, and not for limiting the same; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: it is to be understood that modifications may be made to the above-described arrangements in the embodiments or equivalents may be substituted for some of the features of the embodiments without departing from the spirit or scope of the present invention.
Claims (10)
1. An electromagnetic metamaterial lens unit, which is characterized by comprising a medium substrate layer and a double-layer metal fork type resonance structure, wherein,
the double-layer metal fork type resonance structure comprises two semi-surrounding frame structures, and the two semi-surrounding frame structures are respectively and oppositely arranged at the top and the bottom of the medium base plate to form the double-layer metal fork type resonance structure;
each semi-surrounding frame structure comprises a semi-surrounding metal structure wire with an opening on one side similar to a U shape, and a synapse is arranged in the middle of the semi-surrounding metal structure wire on the side opposite to the opening and extends inwards.
2. The electromagnetic metamaterial lens unit as claimed in claim 1, wherein the parameter of the double-layered metal fork-type resonant structure comprises a semi-enclosed metal structure line length ra(ii) a The line width of the semi-surrounding metal structure is rb，rb＝ra2+0.4 mm; the line width and the synapse width of the semi-surrounding metal structure are w and the synapse length g.
3. An electromagnetic metamaterial lens unit as claimed in claim 1, wherein dielectric matching layers are respectively disposed above and below the double-layer metal fork type resonant structure, and the lens unit resonant impedance matching is achieved by disposing the dielectric matching layers.
4. The lens unit of claim 3, wherein the dielectric substrate layer and the dielectric matching layer are made of F4B PTFE media, and have a dielectric constant of 2.2 and a loss tangent of 0.001.
5. A metamaterial lens antenna is characterized by comprising a feed antenna, wherein metamaterial lenses are correspondingly arranged below the feed antenna, and the metamaterial lenses are formed by periodically arranging the electromagnetic metamaterial lens units of any one of claims 1 to 4.
6. The metamaterial lens antenna of claim 5, wherein the feed antenna comprises a dielectric substrate, and a plurality of metal radiating patch units are arranged at intervals on the bottom of the dielectric substrate.
7. The metamaterial lens antenna of claim 6, wherein the dielectric substrate is a teflon dielectric, the dielectric constant is 2.2, and the loss tangent is 0.0023.
8. The metamaterial lens antenna of claim 5, wherein the spacing between the electromagnetic metamaterial lens elements is slightly less than one-half of the wavelength of air at the resonant frequency.
9. The metamaterial lens antenna of any one of claims 5 to 8, wherein the distance between the feed antenna and the metamaterial lens is set to be 50 mm.
10. The metamaterial lens antenna according to any one of claims 5 to 8, wherein the electromagnetic metamaterial lens units in the metamaterial lens are arranged in different structures in the vertical direction according to phase requirements, and the number and the structures of each column in the horizontal direction are the same.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110560870.4A CN113300115B (en) | 2021-05-18 | 2021-05-18 | Electromagnetic metamaterial lens unit and metamaterial lens antenna |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110560870.4A CN113300115B (en) | 2021-05-18 | 2021-05-18 | Electromagnetic metamaterial lens unit and metamaterial lens antenna |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113300115A true CN113300115A (en) | 2021-08-24 |
| CN113300115B CN113300115B (en) | 2022-05-31 |
Family
ID=77323840
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110560870.4A Active CN113300115B (en) | 2021-05-18 | 2021-05-18 | Electromagnetic metamaterial lens unit and metamaterial lens antenna |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113300115B (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114284746A (en) * | 2021-12-02 | 2022-04-05 | 重庆邮电大学 | Super surface array of double-deck multi-frequency point focusing lens |
| CN114553327A (en) * | 2022-02-16 | 2022-05-27 | 中国信息通信研究院 | System and method for testing wireless resource management consistency of multi-angle-of-arrival millimeter wave terminal |
| WO2024160168A1 (en) * | 2023-02-01 | 2024-08-08 | 中兴通讯股份有限公司 | Flat lens antenna, beam phase adjustment method, antenna device, and medium |
| CN118712758A (en) * | 2024-08-28 | 2024-09-27 | 西安海天天线科技股份有限公司 | Lens antenna, metamaterial lens, metamaterial test unit and manufacturing method of metamaterial test unit |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101505004A (en) * | 2009-03-05 | 2009-08-12 | 四川大学 | High gain slot array antenna based on left-hand material |
| CN103337710A (en) * | 2013-05-21 | 2013-10-02 | 东南大学 | Wideband low sidelobe lens antenna based on novel artificial electromagnetic material |
| CN103414029A (en) * | 2013-08-22 | 2013-11-27 | 江苏大学 | Rectangular frame fractal antenna with both near-zero refractive index effect and left-handed effect |
| US20140111365A1 (en) * | 2011-07-29 | 2014-04-24 | Kuang-Chi Innovative Technology Ltd. | Artificial microstructure and artificial electromagnetic material using the same |
| CN107171065A (en) * | 2017-05-05 | 2017-09-15 | 南京邮电大学 | A kind of new broadband low section dielectric lens antenna |
| CN107765450A (en) * | 2017-10-17 | 2018-03-06 | 北京邮电大学 | Broadband Terahertz line polarization wave asymmetric transmission device based on Meta Materials |
| US20180323492A1 (en) * | 2017-05-03 | 2018-11-08 | Palo Alto Research Center Incorporated | Beam shaping antenna for laminated glass |
| US20190386398A1 (en) * | 2018-06-18 | 2019-12-19 | Bae Systems Information And Electronic Systems Integration Inc. | Nonplanar metamaterial polarizer and antenna system |
| CN210006924U (en) * | 2019-08-08 | 2020-01-31 | 天津职业技术师范大学(中国职业培训指导教师进修中心) | Double-frequency c-type opening resonant ring terahertz ring dipole super surface |
| CN112366458A (en) * | 2020-10-19 | 2021-02-12 | 安徽工程大学 | Metamaterial-based low-profile gradient refractive index lens |
-
2021
- 2021-05-18 CN CN202110560870.4A patent/CN113300115B/en active Active
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101505004A (en) * | 2009-03-05 | 2009-08-12 | 四川大学 | High gain slot array antenna based on left-hand material |
| US20140111365A1 (en) * | 2011-07-29 | 2014-04-24 | Kuang-Chi Innovative Technology Ltd. | Artificial microstructure and artificial electromagnetic material using the same |
| CN103337710A (en) * | 2013-05-21 | 2013-10-02 | 东南大学 | Wideband low sidelobe lens antenna based on novel artificial electromagnetic material |
| CN103414029A (en) * | 2013-08-22 | 2013-11-27 | 江苏大学 | Rectangular frame fractal antenna with both near-zero refractive index effect and left-handed effect |
| US20180323492A1 (en) * | 2017-05-03 | 2018-11-08 | Palo Alto Research Center Incorporated | Beam shaping antenna for laminated glass |
| CN107171065A (en) * | 2017-05-05 | 2017-09-15 | 南京邮电大学 | A kind of new broadband low section dielectric lens antenna |
| CN107765450A (en) * | 2017-10-17 | 2018-03-06 | 北京邮电大学 | Broadband Terahertz line polarization wave asymmetric transmission device based on Meta Materials |
| US20190386398A1 (en) * | 2018-06-18 | 2019-12-19 | Bae Systems Information And Electronic Systems Integration Inc. | Nonplanar metamaterial polarizer and antenna system |
| CN210006924U (en) * | 2019-08-08 | 2020-01-31 | 天津职业技术师范大学(中国职业培训指导教师进修中心) | Double-frequency c-type opening resonant ring terahertz ring dipole super surface |
| CN112366458A (en) * | 2020-10-19 | 2021-02-12 | 安徽工程大学 | Metamaterial-based low-profile gradient refractive index lens |
Non-Patent Citations (1)
| Title |
|---|
| RUNLONG LI 等: "《2019 Cross Strait Quad-Regional Radio Science and Wireless Technology Conference (CSQRWC)》", 21 July 2019 * |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114284746A (en) * | 2021-12-02 | 2022-04-05 | 重庆邮电大学 | Super surface array of double-deck multi-frequency point focusing lens |
| CN114553327A (en) * | 2022-02-16 | 2022-05-27 | 中国信息通信研究院 | System and method for testing wireless resource management consistency of multi-angle-of-arrival millimeter wave terminal |
| CN114553327B (en) * | 2022-02-16 | 2024-07-12 | 中国信息通信研究院 | System and method for testing wireless resource management consistency of millimeter wave terminal with multiple arrival angles |
| WO2024160168A1 (en) * | 2023-02-01 | 2024-08-08 | 中兴通讯股份有限公司 | Flat lens antenna, beam phase adjustment method, antenna device, and medium |
| CN118712758A (en) * | 2024-08-28 | 2024-09-27 | 西安海天天线科技股份有限公司 | Lens antenna, metamaterial lens, metamaterial test unit and manufacturing method of metamaterial test unit |
Also Published As
| Publication number | Publication date |
|---|---|
| CN113300115B (en) | 2022-05-31 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN113300115B (en) | Electromagnetic metamaterial lens unit and metamaterial lens antenna | |
| CN110380222B (en) | Huygens super-surface unit, transmission array antenna and unit phase control method | |
| CN108110435B (en) | Millimeter wave high-gain circularly polarized horn antenna loaded by single-medium planar lens | |
| KR102027714B1 (en) | Metamaterial-Based Transmit Arrays for Multibeam Antenna Array Assemblies | |
| CN106532274B (en) | Dual-frequency circularly polarized planar reflective array antenna based on split ring metamaterial unit | |
| Vilar et al. | Q-band millimeter-wave antennas: An enabling technology for multigigabit wireless backhaul | |
| CN109994814B (en) | Circular polarization varactor active super-surface thin lens antenna | |
| Nahar et al. | A review of design consideration, challenges and technologies used in 5G antennas | |
| CN114552227B (en) | Planar luneberg lens antenna based on sparse phased array feed | |
| CN112736487B (en) | Microstrip reflection array antenna adopting zigzag floor | |
| Anas et al. | Design of ultra-wide tetra band phased array inverted T-shaped patch antennas using DGS with beam-steering capabilities for 5G applications | |
| CN113078461A (en) | Efficient reflection array antenna unit based on mirror symmetry method | |
| CN109802244B (en) | Broadband microstrip reflective array antenna | |
| CN116544679A (en) | Receiving antenna based on electromagnetic lens and design method | |
| CN113964539A (en) | High-gain lens antenna based on double-layer phase shift super surface | |
| WO2024039929A2 (en) | Antennas having lenses formed of light weight dielectric rods and/or meta-material, unit cell structures comprising meta-material and methods of forming lenses | |
| CN214898875U (en) | Broadband microstrip plane reflection unit and array antenna with air layer added | |
| CN109411895A (en) | Three layers of spiral slit transmission units of one kind and transmissive arrays antenna | |
| CN113922098A (en) | Wide beam plane lens antenna with variable beam width | |
| Foo | Metamaterial-based transmitarray for orthogonal-beam-space massive-MIMO | |
| CN110620293B (en) | Sparse array antenna based on six-arm spiral array structure | |
| CN115632245A (en) | Waveguide structure electromagnetic surface wave beam scanning array | |
| CN110504536B (en) | Super surface reflection array antenna unit with linear polarization broken line type structure | |
| CN115036705A (en) | Super surface plane wave lens antenna | |
| CN117616635A (en) | Antenna arrangement comprising a radiator array and a refractive device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |