CN205564982U - Microstrip array antenna based on super material structure - Google Patents
Microstrip array antenna based on super material structure Download PDFInfo
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- CN205564982U CN205564982U CN201620318321.0U CN201620318321U CN205564982U CN 205564982 U CN205564982 U CN 205564982U CN 201620318321 U CN201620318321 U CN 201620318321U CN 205564982 U CN205564982 U CN 205564982U
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Abstract
The embodiment of the utility model discloses microstrip array antenna based on super material structure, include the first medium base plate on second medium base plate through insulation support post parallel arrangement, the upper surface of first medium base plate is equipped with super material array coating, the upper surface of second medium base plate is equipped with microstrip array antenna layer, microstrip array antenna layer includes feed network and a plurality of microstrip antenna unit, feed network with the microstrip antenna unit is connected. The combination and the optimization of array element are carried out to this implementation on traditional microstrip antenna basis, design better microstrip array antenna layer, compare with single microstrip antenna, and the microstrip array antenna of this implementation can improve the directionality and the gain of antenna, simultaneously, the design with microstrip array antenna layer can reach two negativity matter in the same frequency channel super material array coating can improve the focus ability of antenna, and then finally enables the antenna and have good directionality, gain factor and transmission efficiency.
Description
Technical field
This utility model relates to antenna and wireless power transmission technical field thereof, particularly relates to a kind of based on metamaterial structure
Micro-strip array antenna.
Background technology
Relatively other energy, solar energy has acquisition pollution-free, easy and the advantage such as the most inexhaustible, and this is that the mankind solve
Certainly energy crisis, it is to avoid destroy the significant energy source of natural environment.But relative to the solar energy of earth interior, space
Solar energy content is huger, multiple developed country such as the U.S., Japan all it is proposed that the outer space build solar energy plant, but
It is in the face of the program, how outer space electricity is transferred to earth interior, uses for human society industry, life etc.,
But becoming an important discussion problem, wherein, wireless power transmission becomes the feasible program solving this problem.
At present, it is possible to the transmission means for long-distance transmissions have microwave and laser radio electric power transmission two ways, but
The mode of laser radio electric power transmission is due to many impacts such as environment and barrier, and feasibility is less.Owing to microwave is only
There is character, it is possible to carrying out good long-distance transmissions, therefore the transmission of microwave wireless electric power becomes the first-selection side of long-distance transmissions
Case.
As it is shown in figure 1, the primary structure of microwave current Wireless power transmission system includes discharger, free space and connects
Receive fairing.Wherein, the antenna of discharger and reception fairing is particularly important, the gain of antenna, bandwidth and effect
The performances such as rate directly decide efficiency of transmission.Easily realize two-band, dual polarization etc. a little owing to microstrip antenna has, make
Obtain it and become the favorite in antenna family, but its radiation efficiency is relatively low and power capacity is less, deposit during causing using
Problem big in energy loss, that efficiency of transmission is relatively low.
Utility model content
This utility model embodiment provides a kind of micro-strip array antenna based on metamaterial structure, to solve prior art
In microstrip antenna radiation efficiency low, use during the big problem of energy loss.
In order to solve above-mentioned technical problem, this utility model embodiment discloses following technical scheme:
This utility model embodiment provides a kind of micro-strip array antenna based on metamaterial structure, including first medium substrate
With second medium substrate, wherein:
Described first medium substrate is set in parallel on described second medium substrate by insulating supporting post；
The upper surface of described first medium substrate is provided with Meta Materials array coating；
The upper surface of described second medium substrate is provided with micro-strip array antenna layer, and described micro-strip array antenna layer includes transmission network
Network and multiple microband antenna unit, described feeding network is connected with described microband antenna unit；
Described Meta Materials array coating and described micro-strip array antenna layer have identical working frequency range.
Preferably, described Meta Materials array coating is made up of, wherein multiple cross metamaterial unit:
Described cross metamaterial unit is made up of two identical cross Meta Materials subelements；
Described cross Meta Materials subelement is made up of a middle transverse slat and upper and lower two risers, and described riser is symmetrical arranged
At the axis of described transverse slat.
Two described cross Meta Materials subelements are longitudinally arranged and are spliced into one by described riser.
Preferably, described micro-strip array antenna layer includes feeding network and four rectangular microstrip antennas equidistantly arranged successively
Unit, described feeding network include four the one 71 Ω impedance transformers, two the 2nd 71 Ω impedance transformers, two pieces
One 100 Ω microstrip lines, a 2nd 100 Ω microstrip line and 50 Ω microstrip lines, wherein:
One end of described one 71 Ω impedance transformer connects described rectangular microstrip antenna unit, the other end and described first
The termination of 100 Ω microstrip lines is connected, and the two ends of described one 100 Ω microstrip line connect two adjacent described respectively
One 71 Ω impedance transformers (212)；
One end of described 2nd 71 Ω impedance transformer is connected to the center of described one 100 Ω microstrip line, the other end
Connect and be connected with the termination of described 2nd 100 Ω microstrip line；
One end of described 50 Ω microstrip lines is connected to the center of described 2nd 100 Ω microstrip line, other end configuration excitation
Source input port.
Preferably, the relative dielectric constant of described first medium substrate and described second medium substrate be 2.45, thickness be
0.4～0.6mm.
Preferably, a length of the 10～12mm of described rectangular microstrip antenna unit, width is 9～10mm.
Preferably, the length of described one 71 Ω impedance transformer and the 2nd 71 Ω impedance transformer is quarter-wave
Long physical length.
Preferably, a length of 3/4ths free space operation wavelengths of described one 100 Ω microstrip line.
Preferably, the width of described 50 Ω microstrip lines be 1.39mm, a length of 7mm.
Preferably, a length of 1mm of described riser, width are 1mm, and a length of 10mm of described transverse slat, width are 4mm,
Described riser is located on the long limit of described transverse slat.
Preferably, described insulating supporting post is nylon support column, and the height of described nylon support column is 14～16mm.
From above technical scheme, a kind of based on metamaterial structure the microstrip array sky that this utility model embodiment provides
Line, including first medium substrate and second medium substrate, described first medium substrate is set in parallel in by insulating supporting post
On described second medium substrate；The upper surface of described first medium substrate is provided with Meta Materials array coating, described Meta Materials battle array
Row coating is made up of multiple cross metamaterial unit；The upper surface of described second medium substrate is provided with micro-strip array antenna layer,
Described micro-strip array antenna layer includes feeding network and multiple microband antenna unit, described feeding network and described microstrip antenna
Unit is connected.The present embodiment on the basis of traditional microstrip antenna on, carry out combination and the optimization of array element, design phase
To the most excellent micro-strip array antenna layer, compared with single microstrip antenna, the micro-strip array antenna in the present embodiment improves
The directivity of antenna and gain.Meanwhile, also design and described micro-strip array antenna layer can reach double in similar frequency bands
The Meta Materials array coating of negativity matter, can improve directivity and the gain of antenna so that antenna has stronger further
Focusing power, and then the micro-strip antenna array being loaded with Meta Materials array coating in the present embodiment can be had well
Directivity and gain coefficient, improve its microwave far-distance transmission efficiency of transmission.
Accompanying drawing explanation
In order to be illustrated more clearly that this utility model embodiment or technical scheme of the prior art, below will to embodiment or
In description of the prior art, the required accompanying drawing used is briefly described, it should be apparent that, for ordinary skill people
For Yuan, on the premise of not paying creative work, it is also possible to obtain other accompanying drawing according to these accompanying drawings.
Fig. 1 is that the basic structure of microwave wireless electrical power transmission system of the prior art is intended to；
Fig. 2 shows for the first basic structure of the micro-strip array antenna based on metamaterial structure that this utility model embodiment provides
It is intended to；
Fig. 3 shows for the second basic structure of the micro-strip array antenna based on metamaterial structure that this utility model embodiment provides
It is intended to；
The basic structure schematic diagram of the micro-strip array antenna layer that Fig. 4 provides for this utility model embodiment；
The basic structure of the cross metamaterial unit in the Meta Materials array coating that Fig. 5 provides for this utility model embodiment
Schematic diagram；
The three-dimensional gain direction of the micro-strip array antenna based on metamaterial structure that Fig. 6 provides for this utility model embodiment
Figure；
Fig. 7 is the three-dimensional gain pattern of single microstrip antenna of the prior art.
Detailed description of the invention
For the technical scheme making those skilled in the art be more fully understood that in this utility model, below in conjunction with this practicality
Accompanying drawing in new embodiment, is clearly and completely described the technical scheme in this utility model embodiment, it is clear that
Described embodiment is only a part of embodiment of this utility model rather than whole embodiments.New based on this practicality
Embodiment in type, the every other reality that those of ordinary skill in the art are obtained under not making creative work premise
Execute example, all should belong to the scope of this utility model protection.
Meta Materials is also referred to as LHM, and this concept is in relative classical electrodynamics theory for " right-handed material ".
In general cognition, in nature, the DIELECTRIC CONSTANT ε of material and magnetic permeability μ be all on the occasion of, electromagnetic wave is propagated wherein
Time, three physical quantitys describing electromagnetic wave propagation feature constitute right-handed helix relation, here it is the right-hand rule often said.And
LHM be but a kind of DIELECTRIC CONSTANT ε and magnetic permeability μ simultaneously for negative novel artificial material, electromagnetic wave is propagated wherein
Time, three describe electromagnetic wave propagations physical quantitys follow left hand helix rule, through verification experimental verification, metamaterial structure possesses
Good negative refraction, anti-Cerenkov radiation and reversed Doppler effect, the present embodiment utilizes the particularity of metamaterial structure
Matter, is applied in microarray antenna.
See Fig. 1 and Fig. 2, the micro-strip array antenna based on metamaterial structure that respectively this utility model embodiment provides
The first and second basic structure schematic diagrams.
Micro-strip array antenna based on metamaterial structure in this enforcement, including first medium substrate 1 and second medium substrate
2, described first medium substrate 1 is set in parallel on described second medium substrate 2 by insulating supporting post 3.
The upper surface of described first medium substrate 1 is provided with Meta Materials array coating 11, described Meta Materials array coating 11 by
Multiple cross metamaterial unit form；The upper surface of described second medium substrate 2 is provided with micro-strip array antenna layer 21, institute
State micro-strip array antenna layer 21 and include feeding network and multiple microband antenna unit, described feeding network and described microstrip antenna
Unit is connected, and described micro-strip array antenna layer 21 and described Meta Materials array coating 11 have identical work frequency
Section.
In the present embodiment, described insulating supporting post 3 uses nylon support column, certainly can also use other insulant
Support column, such as ceramics pole etc..The support column of differing heights, can produce different deviations to the gain effect of final antenna,
So described nylon support column is designed as the best height 15mm after verification experimental verification, the most described first medium by the present embodiment
Line space design between substrate 1 and described second medium substrate 2 is 15mm, it is, of course, also possible to be designed as other numerical value,
Any value in such as 14～16mm.
What described first medium substrate 1 and described second medium substrate 2 selected is relative dielectric constant is 2.45 material,
Thickness is 0.5mm, is certainly not limited to described numerical value, such as it is also possible that state thickness and be designed as in 0.4～0.6mm
Any value or be designed as other numerical value as required.
According to described first medium substrate 1 and the relative dielectric constant of described second medium substrate 2 and thickness and antenna
Operating frequency, just can calculate each unit in described Meta Materials array coating 11 and described micro-strip array antenna layer 21
Concrete size, wherein, is provided with 8*4 cross metamaterial unit, described microstrip array in described Meta Materials array coating 11
The size of array antenna layer 21 is 76.93mm*30.126mm, but is not limited to described numerical value.
As shown in Figure 4, described micro-strip array antenna layer 21 includes feeding network and four rectangles equidistantly arranged successively
Microband antenna unit 211, length L2 of described rectangular microstrip antenna unit 211 is 11.42mm, width L1 is 9.43mm,
It is certainly not limited to described numerical value, such as, length L2 can also be designed as 10～12mm, width design is 9～10mm
In any value or be designed as other numerical value as required.
Further, described feeding network includes that 212, two the 2nd 71 Ω impedances of four the one 71 Ω impedance transformers become
Parallel operation 213, the 2nd 100 Ω microstrip line 215 of 214, two the one 100 Ω microstrip lines and 50 Ω microstrip lines 216.
One end of described one 71 Ω impedance transformer 212 connects described rectangular microstrip antenna unit 211, the other end and institute
The termination stating the one 100 Ω microstrip line 213 is connected, and in the present embodiment, described one 71 Ω impedance transformer 212 is united
One lower left corner being connected to described rectangular microstrip antenna unit 211.The two ends of described one 100 Ω microstrip line 213 are respectively
Connect two adjacent described one 71 Ω impedance transformers 212, two the most adjacent described rectangular microstrip antenna unit 211
Form a microband antenna unit group.
One end of described 2nd 71 Ω impedance transformer 214 be connected to described one 100 Ω microstrip line 213 center,
The other end connects and is connected with the termination of described 2nd 100 Ω microstrip line 215；One end of described 50 Ω microstrip lines 216 is even
It is connected on the center of described 2nd 100 Ω microstrip line 215, other end configuration driving source input port.
The length of described one 71 Ω impedance transformer the 212 and the 2nd 71 Ω impedance transformer 214 is quarter-wave
Long physical length, i.e. quarter wavelength impedance transducer in Antenna Design.In the present embodiment, the described 1st
The length and width of Ω impedance transformer the 212 and the 2nd 71 Ω impedance transformer 214 specifically separately design as 5.494mm and
0.758mm, but it is not limited to described numerical value.
The length of described one 100 Ω microstrip line 213 takes 3/4ths free space operation wavelengths, has in the present embodiment
Body is designed as 22.5mm.This length is also spacing between adjacent two described rectangular microstrip antenna unit 211, this enforcement
Example designs this distance values, it is possible to reduce the coupling effect between antenna element and antenna element.
The width of described 50 Ω microstrip lines 216 and length separately design as 1.39mm and 7mm, and this is designed to ensure institute
State the operating frequency of micro-strip array antenna at about 10GHz, but be not limited to described numerical value.
As it is shown in figure 5, described cross metamaterial unit is made up of two identical cross Meta Materials subelements, described
Cross Meta Materials subelement is made up of a middle transverse slat and upper and lower two risers, and described riser is symmetricly set on described horizontal stroke
At the axis of plate, two described cross Meta Materials subelements are longitudinally arranged and are spliced into one by described riser.
In order to match with described micro-strip array antenna layer 21, designed metamaterial structure needs at about 10GHz real
Existing " double negative " character, length L4 of described riser is 1mm, width L3 is 1mm, length L5 of described transverse slat be 10mm,
Width L6 is 4mm, and described riser is located on the long limit of described transverse slat.
Negative refraction, anti-Cerenkov radiation and the reversed Doppler effect characteristic possessed due to metamaterial structure so that
Metamaterial structure can improve the gain of antenna, reduces the secondary lobe of antenna and enhances the directivity of antenna.So this reality
Execute example on antenna structure, load described Meta Materials array coating 11, it is possible to increase the directivity of micro-strip array antenna and increasing
Benefit.
As shown in Figure 6 and Figure 7, the microstrip array sky based on metamaterial structure that respectively this utility model embodiment provides
The three-dimensional gain pattern of line, and the three-dimensional gain pattern of single microstrip antenna of the prior art.
As can be seen from Figures 6 and 7, the directivity of the micro-strip array antenna based on metamaterial structure that the present embodiment provides
Directivity and the gain of microstrip antenna single with the ratio of gains have of a relatively high improvement.
Formula, the Friis transmission formula followed, maximal received power P is transmitted according to wave energyRMFor:
In formula, λ is wavelength, and r is the distance between reception antenna and transmission antenna, GtAnd GrBe respectively transmission antenna and
The gain of reception antenna, PtFor launching power.According to Friis formula, it can be seen that increase the gain of antenna, the most enough carry
Height finally receives power, i.e. improves the efficiency of transmission of antenna.
From above technical scheme, it is right that the micro-strip array antenna based on metamaterial structure that the present embodiment provides first passes through
Carry out the combination of array element on microstrip antenna, by calculating and simulation optimization, design directivity and gain coefficient is the most excellent
Good micro-strip array antenna layer.Secondly, it has been further introduced into metamaterial structure, has devised with micro-strip array antenna layer in phase
With the Meta Materials array coating that can reach double negativity matter in frequency range.Micro-strip array antenna after verification experimental verification, combination
Layer and Meta Materials array coating, it is possible to enable the final micro-strip array antenna being loaded with Meta Materials array coating to have good
Good directivity and gain coefficient so that it is have greatly improved in the efficiency of transmission of microwave far-distance transmission.
In the present embodiment, described Meta Materials array coating 11 and described micro-strip array antenna layer 21 are not limited to the present embodiment
The version provided, it is also possible to be designed as other form as required, such as, by described micro-strip array antenna layer 21
It is designed as circularly polarization microstrip array antenna etc..
It should be noted that in this article, such as the relational terms of " first " and " second " or the like be used merely to by
One entity or operation separate with another entity or operating space, and not necessarily require or imply these entities or behaviour
Relation or the order of any this reality is there is between work.And, term " includes ", " comprising " or it is any
Other variants are intended to comprising of nonexcludability so that include the process of a series of key element, method, article or
Equipment not only includes those key elements, but also includes other key elements being not expressly set out, or also includes for this mistake
The key element that journey, method, article or equipment are intrinsic.In the case of there is no more restriction, statement " include one
It is individual ... " key element that limits, it is not excluded that there is also in including the process of described key element, method, article or equipment
Other identical element.
The above is only detailed description of the invention of the present utility model, makes to skilled artisans appreciate that or realize this reality
With novel.Multiple amendment to these embodiments will be apparent to one skilled in the art, herein institute
The General Principle of definition can realize in the case of without departing from spirit or scope of the present utility model in other embodiments.
Therefore, this utility model is not intended to be limited to the embodiments shown herein, and is to fit to disclosed herein
Principle and the consistent the widest scope of features of novelty.
Claims (10)
1. a micro-strip array antenna based on metamaterial structure, it is characterised in that include first medium substrate (1) and
Second medium substrate (2), wherein:
Described first medium substrate (1) is set in parallel on described second medium substrate (2) by insulating supporting post (3)；
The upper surface of described first medium substrate (1) is provided with Meta Materials array coating (11)；
The upper surface of described second medium substrate (2) is provided with micro-strip array antenna layer (21), described micro-strip array antenna layer
(21) including feeding network and multiple microband antenna unit, described feeding network is connected with described microband antenna unit；
Described Meta Materials array coating (11) and described micro-strip array antenna layer (21) have identical working frequency range.
Micro-strip array antenna based on metamaterial structure the most according to claim 1, it is characterised in that described super material
Material array coating (11) is made up of, wherein multiple cross metamaterial unit:
Described cross metamaterial unit is made up of two identical cross Meta Materials subelements；
Described cross Meta Materials subelement is made up of a middle transverse slat and upper and lower two risers, and described riser is symmetrical arranged
At the axis of described transverse slat；
Two described cross Meta Materials subelements are longitudinally arranged and are spliced into one by described riser.
Micro-strip array antenna based on metamaterial structure the most according to claim 1 and 2, it is characterised in that described
Micro-strip array antenna layer (21) includes feeding network and four rectangular microstrip antenna unit (211) equidistantly arranged successively,
Described feeding network include four the one 71 Ω impedance transformers (212), two the 2nd 71 Ω impedance transformers (214),
Two the one 100 Ω microstrip lines (213), a 2nd 100 Ω microstrip line (215) and 50 Ω microstrip lines (216),
Wherein:
One end of described one 71 Ω impedance transformer (212) connect described rectangular microstrip antenna unit (211), another
End is connected with the termination of described one 100 Ω microstrip line (213), and the two of described one 100 Ω microstrip line (213)
End connects two adjacent described one 71 Ω impedance transformers (212) respectively；
One end of described 2nd 71 Ω impedance transformer (214) is connected in described one 100 Ω microstrip line (213)
Heart position, the other end connect and are connected with the termination of described 2nd 100 Ω microstrip line (215)；
One end of described 50 Ω microstrip lines (216) be connected to described 2nd 100 Ω microstrip line (215) center,
Other end configuration driving source input port.
Micro-strip array antenna based on metamaterial structure the most according to claim 1, it is characterised in that described first
The relative dielectric constant of medium substrate (1) and described second medium substrate (2) is 2.45, thickness is 0.4～0.6mm.
Micro-strip array antenna based on metamaterial structure the most according to claim 3, it is characterised in that described rectangle
A length of the 10～12mm of microband antenna unit (211), width is 9～10mm.
Micro-strip array antenna based on metamaterial structure the most according to claim 3, it is characterised in that described first
The length of 71 Ω impedance transformers (212) and the 2nd 71 Ω impedance transformer (214) is quarter-wave physics
Length.
Micro-strip array antenna based on metamaterial structure the most according to claim 6, it is characterised in that described first
A length of 3/4ths free space operation wavelengths of 100 Ω microstrip lines (213).
Micro-strip array antenna based on metamaterial structure the most according to claim 7, it is characterised in that described 50
The width of Ω microstrip line (216) is 1.39mm, a length of 7mm.
Micro-strip array antenna based on metamaterial structure the most according to claim 2, it is characterised in that described riser
A length of 1mm, width be 1mm, a length of 10mm of described transverse slat, width are 4mm, and described riser is located at described horizontal stroke
On the long limit of plate.
Micro-strip array antenna based on metamaterial structure the most according to claim 1, it is characterised in that described absolutely
Edge support column (3) is nylon support column, and the height of described nylon support column is 14～16mm.
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107093801A (en) * | 2017-05-02 | 2017-08-25 | 西安电子科技大学 | High-gain orbital angular momentum array antenna based on the super surface of individual layer electromagnetism |
| CN108258430A (en) * | 2017-12-30 | 2018-07-06 | 天津大学 | One kind is cracked I-shaped left-handed material |
| CN108258431A (en) * | 2017-12-30 | 2018-07-06 | 天津大学 | It is a kind of equipped with the I-shaped left-handed material cracked |
| CN108767446A (en) * | 2018-06-01 | 2018-11-06 | 南京邮电大学 | A kind of low section left hand planar lens antenna |
| CN109802241A (en) * | 2019-02-25 | 2019-05-24 | 西安电子科技大学 | Metamaterial unit, electromagnetic focusing amplifying lens and preparation method thereof |
| CN111989823A (en) * | 2018-10-12 | 2020-11-24 | 华为技术有限公司 | Low-profile packaged antenna |
| CN113258256A (en) * | 2020-01-28 | 2021-08-13 | 弗劳恩霍夫应用研究促进协会 | Antenna module |
| CN113258277A (en) * | 2021-04-23 | 2021-08-13 | 大连海事大学 | Low-sidelobe microstrip array antenna based on hybrid optimization algorithm and metamaterial |
| CN114884431A (en) * | 2022-03-29 | 2022-08-09 | 哈尔滨工业大学 | Photovoltaic-fuel cell multi-energy complementary system of lunar base |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107093801A (en) * | 2017-05-02 | 2017-08-25 | 西安电子科技大学 | High-gain orbital angular momentum array antenna based on the super surface of individual layer electromagnetism |
| CN108258430A (en) * | 2017-12-30 | 2018-07-06 | 天津大学 | One kind is cracked I-shaped left-handed material |
| CN108258431A (en) * | 2017-12-30 | 2018-07-06 | 天津大学 | It is a kind of equipped with the I-shaped left-handed material cracked |
| CN108767446A (en) * | 2018-06-01 | 2018-11-06 | 南京邮电大学 | A kind of low section left hand planar lens antenna |
| CN111989823A (en) * | 2018-10-12 | 2020-11-24 | 华为技术有限公司 | Low-profile packaged antenna |
| CN111989823B (en) * | 2018-10-12 | 2021-12-28 | 华为技术有限公司 | Low-profile packaged antenna |
| CN109802241A (en) * | 2019-02-25 | 2019-05-24 | 西安电子科技大学 | Metamaterial unit, electromagnetic focusing amplifying lens and preparation method thereof |
| CN113258256A (en) * | 2020-01-28 | 2021-08-13 | 弗劳恩霍夫应用研究促进协会 | Antenna module |
| CN113258277A (en) * | 2021-04-23 | 2021-08-13 | 大连海事大学 | Low-sidelobe microstrip array antenna based on hybrid optimization algorithm and metamaterial |
| CN114884431A (en) * | 2022-03-29 | 2022-08-09 | 哈尔滨工业大学 | Photovoltaic-fuel cell multi-energy complementary system of lunar base |
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