CN107069201A - Sub-wavelength cavity antenna based on magnetic single-negative material - Google Patents
Sub-wavelength cavity antenna based on magnetic single-negative material Download PDFInfo
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- CN107069201A CN107069201A CN201710113804.6A CN201710113804A CN107069201A CN 107069201 A CN107069201 A CN 107069201A CN 201710113804 A CN201710113804 A CN 201710113804A CN 107069201 A CN107069201 A CN 107069201A
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- 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
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q19/00—Combinations of primary active antenna elements and units with secondary devices, e.g. with quasi-optical devices, for giving the antenna a desired directional characteristic
- H01Q19/10—Combinations of primary active antenna elements and units with secondary devices, e.g. with quasi-optical devices, for giving the antenna a desired directional characteristic using reflecting surfaces
- H01Q19/18—Combinations of primary active antenna elements and units with secondary devices, e.g. with quasi-optical devices, for giving the antenna a desired directional characteristic using reflecting surfaces having two or more spaced reflecting surfaces
- H01Q19/185—Combinations of primary active antenna elements and units with secondary devices, e.g. with quasi-optical devices, for giving the antenna a desired directional characteristic using reflecting surfaces having two or more spaced reflecting surfaces wherein the surfaces are plane
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Abstract
Sub-wavelength cavity antenna based on magnetic single-negative material, including spaced atr plate and part reflecting plate, the reflecting plate one side opposite with atr plate in part is surface one, one side towards atr plate is surface two, chip unit array is provided with surface one and surface two, the adjacent chip unit of surface one of any two connects, and any one chip unit of surface one includes at least one vacancy portion；It is arranged at intervals between the adjacent chip unit of surface two of any two；The one side of atr plate towards part reflecting plate is provided with radiation metal patch, another side coating metal layer.The present invention bears metamaterials characteristic and Antenna Construction Design there is provided a kind of small volume, lightweight based on magnetic list, and the antenna of flexible structure, influence of the receiving wave range signal to such antenna volume and weight is small.
Description
Technical field
The present invention relates to field of antenna, specifically, it is related to a kind of sub-wavelength cavity antenna based on metamaterials.
Background technology
The size of the antenna of application needed for the frequency range of signal to be received is determined to a certain degree.With the reception of GHz band signals
Exemplified by, international and national is existing to be used to receive GHz band signals (such as solar radio radiation signal, satellite TV signal L, S, C, Ku ripple
Section) antenna be mainly parabola antenna, this kind of antenna volume is big, weight is big, maintenance cost is high, particularly solar radio radiation be imaged
Antenna in system is even more so.
Relative to parabola antenna, micro-strip paster antenna is a kind of flat plane antenna, with small volume, lightweight, thin profile,
It is easy to process, many advantages, such as be easily integrated into single module with active device and circuit, there is many advantages in terms of space exploration,
Have been used in piggyback satellite observation system.Traditional micro-strip paster antenna also have some shortcomings, for example, can frequency acceptance band compared with
Narrow, polarization purity is poor, parasitic feed radiation is big etc..Traditional cavity micro-strip paster antenna, can be real using resonator cavity resonance principle
Existing high directivity, due to being limited by the reflected phase of metal mirror 180, the thickness of resonator needs to meet：
Wherein d is the thickness of resonator, and λ is receives the wavelength of signal, and n is any positive integer, that is to say, that the thickness of resonator is minimum
It can only accomplish to receive 1/2nd of signal wavelength, if this antenna is used to receive GHz band signals, needing depending on signal will be humorous
The chamber thickness that shakes accomplishes larger, and antenna integral thickness also limit the reduction of antenna volume.
Metamaterials are a kind of new artificial materials, refer to the material with sub-wavelength period structure, utilize material
The design of surface periodic lattice, can make locally resonant mechanism play a leading role.The dielectric constant and magnetic conductivity of metamaterials can
With simultaneously for negative value, or one of them be negative value, or simultaneously be less than 1.The electromagnetic property of conventional material, is mostly derived from composition material
The atom and molecule of material itself is mostly derived from artificial resonant element to electromagnetic wave to the corresponding of electromagnetic wave, the electromagnetic property of metamaterials
Response, using the special Regulation Mechanism of its electromagnetic wave, can construct equivalent permeability less than zero dielectric constant be more than zero magnetic
Single-negative material, magnetic single-negative material belongs to one kind of metamaterials, because the equivalent permeability of magnetic single-negative material is less than zero, makes its table
The reflected phase in face is 0, that is, produces with mutually reflecting, therefore, utilize zero reflected phase characteristics of magnetic single-negative material, it is possible to achieve be prominent
The resonator (sub-wavelength resonator) of wavelength dimension limitation is broken in two, the thickness of its resonator can go to zero, so as to realize
The miniaturization of antenna system.In addition, magnetic single-negative material can for suppress printed antenna surface wave loss, so as to improve radiation
Secondary lobe and back scattering performance.
Publication No. CN101461097A Chinese patent discloses a kind of portable antenna of use AMC materials, including
First layer group and second layer group, first layer group and second layer group are between the upper and lower every be arrangeding in parallel, and centre forms cavity layer, and it is provided
A kind of small size antenna of three-decker.But its first layer is antenna stack, the second layer is circuit structure layer, is to be used between two layers
Completely cut off antenna stack and circuit electro-magnetic screen layer once, that is to say, that its antenna performance layer is only first layer, do not have for other two layers
The characteristic of antenna.Although it also discloses that the structure of paster, paster is to be connected through vertical conduction is empty with fixed bottom line, is one
Plant traditional antenna designs.
The content of the invention
It is an object of the invention to in the prior art, antenna size is influenceed by signal in band is received, high band signal
It is required that reception antenna volume is big, weight is big so that such antenna exist be difficult with other devices it is conformal, it is difficult in maintenance the problem of,
Metamaterials characteristic and Antenna Construction Design are born there is provided a kind of small volume, lightweight, flexible structure antenna based on magnetic list, connect
Receive influence of the band signal to such antenna volume and weight small.
The technical scheme is that：Sub-wavelength cavity antenna based on magnetic single-negative material, including it is spaced complete
Reflecting plate and part reflecting plate, the part reflecting plate one side opposite with atr plate are surface one, towards the one side of atr plate
For surface two (i.e. the one side opposite with surface one is surface two), chip unit array is provided with surface one and surface two,
The adjacent chip unit of surface one of any two connects, and any one chip unit of surface one includes at least one vacancy
Portion；It is arranged at intervals between the adjacent chip unit of surface two of any two；Paster battle array on two surfaces up and down of part reflecting plate
Row play a part of adjust part reflecting plate reflection characteristic, can Regulate signal reflectivity, while can Regulate signal it is anti-
Penetrate phase；The one side of atr plate towards part reflecting plate is provided with radiation metal patch, another side coating metal layer, as complete
Reflecting surface, and this is simultaneously provided with feed connection (feed output end), feed connection connects with radiation metal patch, passes through feed
Joint exports aerial signal.
Preferably：The chip unit of surface one and the chip unit of surface two are regular both sides symmetric shape.
Preferably：The chip unit of surface one is quadrangle, and four angle parts of quadrangle form four vacancy portions.
Preferably：The chip unit of surface one is cross paster, the relative one side of the adjacent cross paster of any two
Connect；The chip unit of surface two is square patch.
Preferably：The length of side of cross paster is more than the length of side of square patch.
Preferably：One chip unit of surface one of part reflecting plate and the center alignment of a chip unit of surface two.
The one group of chip unit of surface one and the chip unit of surface two that center is alignd each other constitute a signal condition group, can be achieved more steady
Fixed signal condition effect.
Preferably：Is structure is fixedly mounted in atr plate, and part reflecting plate is detachable adjustable structure.
Preferably：Part reflecting plate is arranged in vertical rails by slide unit.
Preferably：Cooperation mounting hole is provided with atr plate and part reflecting plate, is coordinated by adjusting screw and installed.Will
Dismountable structure is designed as between atr plate and part reflecting plate, the thickness of resonator is conveniently adjusted, basis is also convenient for and connects
Receipts demand, adjusts the receives frequency of antenna by way of changing atr plate or part reflecting plate.
Preferably：Between atr plate and part reflecting plate at intervals of air layer or filled with dielectric material, signal can
By.
Preferably：Atr plate and part reflecting plate be arranged in parallel, realize more stable signal transmission and conditioning.
Beneficial effects of the present invention are：
(1) it is a kind of flat the invention provides a kind of sub-wavelength resonator metamaterials antenna of single-negative material of magnetic containing individual layer
Surface antenna, chip unit array of the present invention based on part reflection plate surface one and surface two, makes part reflecting plate have magnetic list
The characteristic of negative material, using the special electromagnetic characteristic of magnetic single-negative material, its integral thickness can be much smaller than detection or reception electricity
/ 2nd of the wavelength of magnetic wave, particularly, using zero reflected phase characteristics of magnetic single-negative material, resonant cavity thickness can tend to
Zero.Compared with existing micro-strip paster antenna, resonant cavity thickness is not limited by signal wavelength is received, so as to greatly reduce antenna
Size.
(2) main body of metamaterials microstrip antenna is the metal level of dielectric material, part reflecting plate and atr plate surface
Overall weight very little is accounted for, therefore, the sub-wavelength resonator metamaterials antenna of the single-negative material of magnetic containing individual layer is with small volume, again
Amount is light, ultra-thin, easily with multiple advantages such as other devices are conformal.This kind of new metamaterials antenna inherits conventional microstrip antenna
Advantage, while overcoming the shortcoming of many conventional microstrip antennas.
(3) compared with Publication No. CN101461097A patent, although the antenna that the application is provided is also a kind of three layers
The characteristic that three layers are respectively provided with antenna in structure, but the application, three layers of cooperating, greatly improves the performance of antenna.
(4) working frequency of antenna is born unit individual size, magnetic single-negative material overall dimensions by resonant cavity thickness and magnetic list
Influence.The thickness for adjusting resonator be can adjust, and the package assembly of atr plate and part reflecting plate flexibly, can be answered according to antenna
With occasion, the spacing of the band characteristic of signal to be received adjustment therebetween, so as to adjust the thickness of resonator.It can also change
The part reflecting plate of unit size is born with different magnetic lists, the frequency response characteristic of reception antenna is adjusted, makes Antenna Operation most
Good reception or tranmitting frequency.It is a kind of antennaverter further to make the antenna.
(5) flexibly, another aspect benefit is the package assembly of atr plate and part reflecting plate：After antenna assemblies, it can lead to
Cross the thickness that fine setting changes resonator, it is to avoid adjustment antenna structure and re-work, so as to save processing cost and reduction
Test and debugging difficulty.
Brief description of the drawings
Fig. 1 is antenna structure view；
Fig. 2 is the part reflection structural representation of plate surface one；
Fig. 3 is the part reflection structural representation of plate surface two；
Fig. 4 is atr plate fully reflecting surface structural representation；
Fig. 5 is an atr plate face structural representation relative with part reflecting plate；
Fig. 6 is the chip unit structural representation of surface one of part reflecting plate；
Fig. 7 is the chip unit structural representation of surface two of part reflecting plate；
Fig. 8 is the reflectivity comparison diagram that part reflecting plate conventional elements bear unit with magnetic list；
Fig. 9 is the reflected phase comparison diagram that part reflecting plate conventional elements bear unit with magnetic list；
Figure 10 is the S11 figures for the antenna that working frequency is 2.8GHz；
Figure 11 is the directive gain figure for the antenna that working frequency is 2.8GHz.
Figure 12 is the chip unit structural representation of another embodiment surface one.
Figure 13 is the chip unit structural representation of another embodiment surface one.
Figure 14 is the chip unit structural representation of another embodiment surface one.
Figure 15 is the chip unit structural representation of another embodiment surface two.
Figure 16 is the chip unit structural representation of another embodiment surface two.
Figure 17 is the chip unit structural representation of another embodiment surface two.
Wherein：1- parts reflecting plate, 2- atr plates, 3- resonators, the chip unit of 4- surfaces one, the paster list of 5- surfaces two
Member, 6- metal fully reflecting surfaces, 7- feed connections, 8- radiation metal patches
Embodiment
The embodiment of the present invention is clearly fully described by below with reference to accompanying drawing.Obviously, it is embodied
Embodiment described by mode is only a part of embodiment of the present invention, rather than whole embodiments.Based in the present invention
Embodiment, the every other embodiment that those of ordinary skill in the art are obtained on the premise of creative work is not made,
Belong to protection scope of the present invention.
The invention provides a kind of sub-wavelength cavity antenna that metamaterials are born based on magnetic list, belong to micro-strip paster antenna
One kind, compared with micro-strip paster antenna in the prior art, frequency based on metamaterials adjustment characteristic can make the resonance of antenna
Chamber thickness is greatly reduced, and is not limited by signal frequency range is received, so as to greatly reduce the volume and weight of antenna.
Embodiment 1
As shown in figure 1, the cavity antenna structural representation provided for the present invention.The sub- ripple of metamaterials is born based on magnetic list
Long cavity antenna includes the atr plate 3 and part reflecting plate 1 of spaced and parallel setting；Atr plate 2 and part reflecting plate 1 it
Between gap be to form resonator 2.Different according to the direction for receiving signal, atr plate 3 can be located at the lower section of part reflecting plate 1,
The top of part reflecting plate 1 can also be located at for atr plate 3.
As shown in Figures 2 and 3, part reflecting plate about 1 two surfaces be provided with the cycle arrangement chip unit array, appoint
Two adjacent chip units of surface one of meaning connect, and any one chip unit of surface one includes at least one vacancy portion,
For making signal pass through partially reflective plate 1；It is arranged at intervals between the adjacent chip unit of surface two of any two；Atr plate 3
The one side of part reflecting plate 1 is provided with radiation metal patch 8, another side coating metal layer is used as metal fully reflecting surface 6, gold
There is feed connection 7 on category fully reflecting surface 6.The positive pole of feed connection 7 connects with radiation metal patch 8, for exporting aerial signal；Feedback
The negative pole of electric connection 7 is grounded.
Specifically, the chip unit of surface one of part reflecting plate connects including N number of and is bonded the chip unit of surface one
4 arrays, the chip unit of surface two is spaced the composition array of two chip unit of surface 5 including N number of.The chip unit of surface one and
This fit structure of the chip unit of surface two, construction part reflecting plate is individual layer magnetic single-negative material, and the docking collection of letters number produces tune
Section is acted on.The main function of which part reflecting plate 1 has two, and one is to enable part signal permeation parts reflecting plate 1, incident
Into resonator 2, another effect is to play reflex to the signal not transmitted into resonator, while can adjust into humorous
The reflected phase of the electromagnetic wave signal for intracavitary of shaking.Its signal strength entered in resonator 2 and the vacancy of the chip unit of surface one
The setting in portion is relevant.
The mating reaction of metal mirror 6 of the chip unit array of surface two and atr plate of part reflecting plate 1, the two
Main function be to be transmitted into resonator 2 signal carry out multiple reflections, superposition, signal by repeatedly strengthen after, finally
Signal is set to be received by feed (comprising radiation metal patch 8 and feed output end).
Preferably, the chip unit 4 of surface one and the chip unit 5 of surface two on part reflecting plate 1 are the two of rule
The center alignment of side symmetric shape, a chip unit 4 of surface one and a chip unit 5 of surface two.This structure can strengthen
The reflection characteristic of the chip unit 4 of surface one and the chip unit 5 of surface two, you can to obtain suitable reflectivity and adjustable reflection
Phase, due to using symmetrical structure, can be achieved stable signal condition effect, while the electromagnetic wave into resonator can be adjusted
The reflected phase of signal.
For example, the chip unit 4 of surface one on part reflecting plate 1 can use quadrangle, and four angle part shapes of quadrangle
Into four vacancy portions.That is, the chip unit of surface one is the shape developed by a quadrangle, the four of quadrangle
Individual angle symmetrically constitutes out four vacancy portions, and being that signal is incoming, spread out of part reflecting plate 1 provides passage.This vacancy portion can be with
For triangle is square or other shapes.
It is cross paster to provide the chip unit 4 of surface one on a kind of specific embodiment, part reflecting plate 1 again,
The relative one side of the adjacent cross paster of any two connects；The chip unit 5 of surface two is square patch.It is appreciated that
Cross paster is structure formed by a square or rectangular is developed, it is envisaged that for a square or rectangular
Symmetrical scratch removes what is formed behind four angles.
As a kind of more excellent embodiment, a cross paster and a square patch center alignment, cross
The length of paster is more than the length of side of square patch.Due to cross paster be it is each be all connected with, and square patch need between
Every setting, this structure can just realize cross paster one square patch of correspondence, center alignment.
Interval between atr plate and part reflecting plate, that is, resonator 2, can be air layer or filled media material
Material, wherein described dielectric material refers to the material that aerial signal can be transmitted.
In addition to using cross paster and square patch, the chip unit 4 of surface one and the chip unit 5 of surface two can be with
Using other shapes.As shown in Figure 12 to Figure 17, other several chip units 4 of surface one and the chip unit of surface two are given
5 implementation structural representation.
More than, summarize the structure for discussing antenna, below, will be using a kind of 2.80GHz metamaterials antenna as specific implementation
For mode tomorrow line structure.Due to the antenna that the present invention is provided, the thickness of its resonator 2, the size of chip unit all can
Antenna is influenceed to receive the frequency of signal, therefore, the antenna size that detailed description below is provided provides a kind of working frequency
For 2.80GHz antenna.The antenna is with the radio flux gauge of sun 10.7cm wavelength (2.80GHz, correspondence F107 index)
In antenna receives frequency 2.80GHz exemplified by, resonator is designed by taking air as an example.
Two reflecting walls of resonator 2, are that atr plate 3 below includes metal fully reflecting surface 6 and metal spoke respectively
Penetrate paster 8, above be part reflecting plate 1, including surface one and surface two set different paster structures respectively.
Fig. 4 to Fig. 7 gives this embodiment antenna structure view.Specifically, the antenna is by three-decker group
Conjunction is formed.Atr plate 3 wherein positioned at bottom is the dielectric-slab that thickness is 1.6mm, and the dielectric constant of medium is 3.6.Simultaneously
Layers of copper is covered as metal fully reflecting surface 6, the center of another side is to pass through 50 Ω coaxial line direct feeds as driving source
Metal patch 8 is radiated, the size of radiation metal patch 8 is 25mm*16.7mm；What it is positioned at centre is to fill sky as resonator 2
Second Rotating fields of gas, thickness is 17.2mm；Positioned at the part reflecting plate 1 of aerial head, thickness is 5mm, its surface a moment
There is the cross metal patch (paster of surface one) 4 that the cycle is 34*34, the width of unit metal grid lines is 4mm, and length is
12mm.Square-shaped metal paster (paster of surface two) 5, the size of unit metal paster that it is 34*34 in the cycle that its surface two, which is,
For 11.4mm, the spacing between sheet metal is 1.2mm.
The running parameter of antenna is：Working frequency is 2.80GHz, and the thickness of resonator 2 is only 17.2mm, only working frequency
The 1/6 of air wavelength 108mm, realizes antenna ultra-slim features, and S11 parameters are -21.4dB, and the gain of main lobe is 20.2dB, most
Large gain angle is 0 °, and main lobe direction angle is 16.9 °, and sidelobe level is -19.9dB.The antenna and traditional paster antenna phase
Than with higher gain and main-beam efficiency.Compared with traditional parabola antenna, there is smaller volume under identical performance
Smaller thickness, can have lighter weight, and structure is simpler, and processing more facilitates.
The superstructure of antenna structure is part reflecting plate 1, and the non-fully reflection characteristic of superstructure causes electromagnetic wave both
Can in resonator 2 multiple reflections so that the electromagnetic wave signal of resonant frequency realizes resonant check, while can guarantee that again signal to
Front radiate or received by feed.
It is cycle arrangement metal patch in the one side of media plate that traditional part reflector plate structure, which is usually, and another
Face does not have paster structure, and herein, the antenna of our this structures is called resonant cavity antenna.It is different from traditional structure, newly
It is that (surface one is metal mesh structure, and surface two is the cycle by the negative resonant element of sub-wavelength magnetic list on the part reflector plate of type
The square metal paster of arrangement) periodic arrangement composition.Conventional part reflector plate face, and unit cycle arrangement structure is born by magnetic list
Into part reflector plate face, be respectively 0.973 and 0.975 in 2.8GHz reflectivity, meet the characteristic of high reflection.When
The electromagnetic wave irradiation of 2.8GHz frequencies is to that can produce the reflected phase close to 180 degree during traditional structure, so the minimum of cavity is thick
The half close to operating frequency wavelength is spent, the electromagnetic wave of working frequency could reflect superposition enhancing in resonant cavity.But
The electromagnetic wave irradiation of 2.8GHz frequencies to the single-negative material containing magnetic structure when, the reflected phase of electromagnetic wave can be 0 or close
0, so the thickness of resonator 2 can be less than half-wavelength, so as to realize sub-wavelength resonant cavity.
Fig. 8 and Fig. 9 give the present embodiment antenna and traditional part catoptric arrangement material antenna-reflected rate and reflection phase
The comparison diagram of position.As seen from Figure 8, using magnetic list bear metamaterials antenna, its reflectivity compared with the reflectivity of traditional antenna have compared with
Big difference；Fig. 9 is visible, bears metamaterials antenna using magnetic list and is compared compared with traditional antenna, reflected phase close to 0 or can be waited
In 0.It is to be appreciated that due to the antenna for 2.8GHz of the present embodiment offer, it is seen that near 2.8GHz, the reflected phase of antenna
Close to 0, and in the positive and negative scopes of 2.8GHz, because antenna performance is no longer desirable for this working frequency, difference on the frequency is bigger, instead
Penetrating phase also can gradually increase.
Figure 10 and Figure 11 give the S11 figures and directive gain figure of antenna in the present embodiment, it is seen that antenna performance is good.
The design method is also applied for the new antenna of other frequencies.The thickness of appropriate adjustment sub-wavelength resonator 2, and
(special instruction, the structure for constituting the negative unit of magnetic list is not limited to the size of the negative cellular construction of magnetic list and radiation metal patch
Cross grid and square type paster, the combination of other shapes can also realize that magnetic list bears unit), its equivalent permeability is less than zero very
To tending to minus infinity, so that zero reflected phase (or reflected phase of any number) frequency of magnetic single-negative material is adjusted, and
Adjust the working frequency of antenna.
Specifically, the change of the part reflection characteristic of part reflector plate layer 1 can be by changing magnetic single-negative material
The size of elementary cell is realized, for example, the width regulation and control of the right-angled intersection metal wire of composition patch array, put down during width increase
The reflectivity increase of flaggy 1, the reflectivity of flat layer 1 reduces when width reduces.Zero reflected phase pair of part reflector plate layer 1
The frequency answered, mainly by the width adjustment of the square metal paster of two chip unit of surface 5, reflector plate layer in part during width increase
Zero reflected phase frequency moved to low frequency, zero reflected phase frequency of part reflector plate layer is to high frequency displacement when width reduces
It is dynamic.Unit is born according to the magnetic list that above rule can design different frequency response.
When magnetic list bears the increase of unit overall dimensions, zero reflected phase frequency of part reflector plate layer 1 is moved to low frequency.Magnetic
When single negative unit overall dimensions reduce, zero reflected phase frequency of part reflector plate layer 1 is to high-frequency mobile.
The working frequency of antenna can also be adjusted by adjusting the thickness of sub-wavelength resonator 2.When the thickness of resonant cavity 2
During increase, operating frequency of antenna is moved to low frequency, when the thickness of resonant cavity 2 reduces, and the working frequency of antenna is to high frequency displacement
It is dynamic.Electromagnetic wave multiple reflections in resonant cavity are superimposed, and the reflected phase and wave-path phase sum for meeting upper and lower surface are 2 π's
Integral multiple could realize superposition enhancing.Magnetic list bears metamaterials can realize the reflection phase close to zero in certain frequency range
Position, changes, meeting the frequency of electromagnetic wave resonant check condition can also occur therewith in this frequency range inner chamber body thickness
Change.So the working frequency of antenna can be adjusted by the thickness for suitably adjusting cavity.
Each dimensional parameters of structure adjusting can realize the optimal radiance of antenna.
The antenna structure, for being placed on the radiation source 8 of inside cavity, can play increasing using sub-wavelength cavity resonator structure
The effect of intense radiation directionality, improves the gain of aerial radiation.Using 0 reflected phase characteristics of magnetic single-negative material, realize humorous
Shake the sub-wavelength ultrathin of cavity.
Embodiment 2
Present embodiment further provides for a kind of adjustable antenna structure of thickness of resonator 2.Except for the following differences, other are tied
Structure be the same as Example 1.
It is already described in embodiment 1, day can be adjusted by adjusting the thickness of resonator 2 or changing the size of the negative array element of magnetic list
The working frequency of line.And in existing structure, antenna is generally fixed structure, once assembling, it is difficult to change the structure of antenna again.
Atr plate 3 and part reflecting plate 1 can be both designed as to detachable adjustable structure in the present embodiment, pass through adjustment
The position of the two can adjust the thickness of resonator 2, by dismounting and change, and replaceable different size magnetic lists bear the part of array element
Reflecting plate 1.Atr plate 3, can also be designed as that structure is fixedly mounted, part reflecting plate is detachable adjustable by another mode
Structure.
Specifically, part reflecting plate 1 is arranged in vertical rails by slide unit, can by being moved on slide rail
Adjust the thickness of resonator 2.
Cooperation mounting hole is provided with another embodiment, atr plate 3 and part reflecting plate 1, passes through adjusting screw
Coordinate and install.Adjustable spacing therebetween is rotated by attachment screw.
Claims (10)
1. the sub-wavelength cavity antenna based on magnetic single-negative material, it is characterised in that：Including spaced atr plate and portion
Divide reflecting plate, the reflecting plate one side opposite with atr plate in part is surface one, and the one side towards atr plate is surface two, table
Chip unit array is provided with face one and surface two, the adjacent chip unit of surface one of any two connects, and any one
The individual chip unit of surface one includes at least one vacancy portion；It is spaced and sets between the adjacent chip unit of surface two of any two
Put；The one side of atr plate towards part reflecting plate is provided with radiation metal patch, another side coating metal layer.
2. the sub-wavelength cavity antenna as claimed in claim 1 based on magnetic single-negative material, it is characterised in that：The paster of surface one
Unit and the chip unit of surface two are regular symmetric shape.
3. the sub-wavelength cavity antenna as claimed in claim 2 based on magnetic single-negative material, it is characterised in that：The paster of surface one
Unit is quadrangle, and four angle parts of quadrangle form four vacancy portions.
4. the sub-wavelength cavity antenna as claimed in claim 3 based on magnetic single-negative material, it is characterised in that：Part reflecting plate
The chip unit of surface one be cross paster, the relative one side of the adjacent cross paster of any two connects；Paste on surface two
Blade unit is square patch.
5. the sub-wavelength cavity antenna based on magnetic single-negative material as claimed in claim 1 or 2 or 3 or 4, it is characterised in that：
One chip unit of surface one of part reflecting plate and the center alignment of a chip unit of surface two.
6. the sub-wavelength cavity antenna as claimed in claim 1 based on magnetic single-negative material, it is characterised in that：Atr plate is
Structure is fixedly mounted, part reflecting plate is detachable adjustable structure.
7. the sub-wavelength cavity antenna as claimed in claim 6 based on magnetic single-negative material, it is characterised in that：The part is anti-
Plate is penetrated to be arranged in vertical rails by slide unit.
8. the sub-wavelength cavity antenna based on magnetic single-negative material as described in claim 1 or 6, it is characterised in that：Total reflection
Cooperation mounting hole is provided with plate and part reflecting plate, is coordinated by adjusting screw and installed.
9. the sub-wavelength cavity antenna as claimed in claim 1 based on magnetic single-negative material, it is characterised in that：Atr plate and
Between the reflecting plate of part at intervals of air layer or filled media material.
10. the sub-wavelength cavity antenna as claimed in claim 1 based on magnetic single-negative material, it is characterised in that：Atr plate
It is be arranged in parallel with part reflecting plate.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710113804.6A CN107069201A (en) | 2017-02-28 | 2017-02-28 | Sub-wavelength cavity antenna based on magnetic single-negative material |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710113804.6A CN107069201A (en) | 2017-02-28 | 2017-02-28 | Sub-wavelength cavity antenna based on magnetic single-negative material |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109802232A (en) * | 2019-03-14 | 2019-05-24 | 哈尔滨工程大学 | Fabry-Perot resonant cavity wide band high-gain microstrip antenna based on single-layer double-side coat structure |
| CN111226346A (en) * | 2017-10-18 | 2020-06-02 | 瑞典爱立信有限公司 | Adjustable resonant cavity |
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| CN111226346B (en) * | 2017-10-18 | 2023-07-25 | 瑞典爱立信有限公司 | Tunable resonant cavity, related physical device and method for tuning resonant frequency |
| CN109802232A (en) * | 2019-03-14 | 2019-05-24 | 哈尔滨工程大学 | Fabry-Perot resonant cavity wide band high-gain microstrip antenna based on single-layer double-side coat structure |
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