CN207353459U - Antenna element and aerial array - Google Patents
Antenna element and aerial array Download PDFInfo
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- CN207353459U CN207353459U CN201721476494.6U CN201721476494U CN207353459U CN 207353459 U CN207353459 U CN 207353459U CN 201721476494 U CN201721476494 U CN 201721476494U CN 207353459 U CN207353459 U CN 207353459U
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- 239000000758 substrate Substances 0.000 claims abstract description 102
- 230000005855 radiation Effects 0.000 claims abstract description 81
- 230000003071 parasitic effect Effects 0.000 claims abstract description 42
- 238000010586 diagram Methods 0.000 description 46
- 230000010287 polarization Effects 0.000 description 15
- 230000005540 biological transmission Effects 0.000 description 9
- 230000008901 benefit Effects 0.000 description 5
- 230000000694 effects Effects 0.000 description 5
- 230000005684 electric field Effects 0.000 description 5
- 230000005611 electricity Effects 0.000 description 5
- 238000004891 communication Methods 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 239000004020 conductor Substances 0.000 description 2
- 230000008878 coupling Effects 0.000 description 2
- 238000010168 coupling process Methods 0.000 description 2
- 238000005859 coupling reaction Methods 0.000 description 2
- 238000009413 insulation Methods 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 230000008054 signal transmission Effects 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 239000004593 Epoxy Substances 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 239000003989 dielectric material Substances 0.000 description 1
- 238000010292 electrical insulation Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 230000005284 excitation Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000013028 medium composition Substances 0.000 description 1
- 239000003595 mist Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000024241 parasitism Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
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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
- H01Q21/00—Antenna arrays or systems
- H01Q21/28—Combinations of substantially independent non-interacting antenna units or systems
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q9/00—Electrically-short antennas having dimensions not more than twice the operating wavelength and consisting of conductive active radiating elements
- H01Q9/04—Resonant antennas
Abstract
The utility model provides a kind of antenna element and aerial array.The antenna element of the utility model, including spaced top substrate layer and underlying substrate, at least one parasitic patch is provided with top substrate layer, radiation fin and feeding network are provided with underlying substrate, feeding network is connected by two distributing points with two corners of radiation fin.The utility model can realize preferable radiance and impedance behavior.
Description
Technical field
It the utility model is related to field of antenna, more particularly to a kind of antenna element and aerial array.
Background technology
With science and technology development and demand increase, circular polarized antenna because environmental suitability it is strong, good in anti-interference performance
Advantage, is more and more widely used.
At present, the realization of circular polarized antenna has a variety of methods, such as SF single feed method and multiple feeds method etc..Wherein, multiple feeds
Method is into row energization by two distributing points, and by the setting of feeding network, makes the excitation amplitude of two distributing points equal, and
Phase differs 90 ° of angles, so as to obtain the circular polarisation field of antenna.In order to improve circular polarisation performance, generally use square antenna side is presented,
And the antenna form of square shaped antenna corner cut.
However, the circular polarisation limited capacity of circular polarized antenna, directional diagram distort with certain in the prior art, and antenna
Secondary lobe is larger.
Utility model content
The utility model provides a kind of antenna element and aerial array, can realize preferable radiance and resistance
Energy.
The utility model embodiment provides a kind of antenna element, including spaced top substrate layer and underlying substrate, institute
State and at least one parasitic patch is provided with top substrate layer, radiation fin and feeding network are provided with the underlying substrate, it is described
Feeding network is connected by two distributing points with two corners of the radiation fin.
Optionally, there are 90 ° of phase differences between two distributing points.
Optionally, projection of the parasitic patch on the underlying substrate at least has part weight with the radiation fin
It is folded.
Optionally, projection of the parasitic patch on the underlying substrate covers the radiating side of the radiation fin.
Optionally, it is air layer between the top substrate layer and the underlying substrate.
Optionally, the radiation fin is symmetrical relative to the center line between two distributing points.
Optionally, feeding network includes two microstrip lines being connected respectively with the distributing point, and every microstrip line is equal
It is connected between the feed placement of the distributing point and the feeding network.
Optionally, the parasitic patch is sticked in the lower surface of the top substrate layer.
The utility model also provides a kind of aerial array, including at least two antenna elements as described above.
Optionally, aerial array includes four antenna elements, and four antenna elements surround circlewise, and each institute
Antenna element is stated to be rotated by 90 ° both with respect to the adjacent antenna element；The current feed phase of the antenna element differs 90 ° successively.
The antenna element of the utility model includes spaced top substrate layer and underlying substrate, is provided with top substrate layer
At least one parasitic patch, is provided with radiation fin and feeding network on underlying substrate, feeding network passes through two distributing points and spoke
Penetrate two corners connection of piece.So antenna element can realize preferable bandwidth, gain and Circular polarization ratio characteristic etc., so that
Reach excellent radiance and impedance behavior.
Brief description of the drawings
In order to illustrate the embodiment of the utility model or the technical proposal in the existing technology more clearly, below will be to embodiment
Or attached drawing needed to be used in the description of the prior art is briefly described, it should be apparent that, drawings in the following description are
Some embodiments of the utility model, for those of ordinary skill in the art, in the premise of not making the creative labor property
Under, other attached drawings can also be obtained according to these attached drawings.
Fig. 1 is the structure diagram for the antenna element that the utility model embodiment one provides；
Fig. 2 is the side view for the antenna element that the utility model embodiment one provides；
Fig. 3 is the structure diagram of underlying substrate in the antenna element that the utility model embodiment one provides；
Fig. 4 is the matching properties schematic diagram for the antenna element that the utility model embodiment one provides；
Fig. 5 is the directional diagram for the antenna element that the utility model embodiment one provides；
Fig. 6 is that the axis for the antenna element that the utility model embodiment one provides compares directional diagram；
Fig. 7 is the different shape schematic diagram for the radiation patch that the utility model embodiment one provides；
Fig. 8 is the structure diagram for the aerial array that the utility model embodiment two provides；
Fig. 9 is the side view for the aerial array that the utility model embodiment two provides；
Figure 10 is structure diagram of the aerial array of the offer of the utility model embodiment two when not including top substrate layer；
Figure 11 is the bandwidth impedance characteristic schematic diagram for the aerial array that the utility model embodiment two provides；
Figure 12 is the E faces directional diagram for the aerial array that the utility model embodiment two provides；
Figure 13 is the H faces directional diagram for the aerial array that the utility model embodiment two provides；
Figure 14 is that the E faces axis for the aerial array that the utility model embodiment two provides compares directional diagram；
Figure 15 is that the H faces axis for the aerial array that the utility model embodiment two provides compares directional diagram；
Figure 16 is that the aerial array that the utility model embodiment two provides is schemed in the axis ratio of different frequency；
Figure 17 is the structure diagram for the antenna element that the utility model embodiment three provides；
Figure 18 is the side view for the antenna element that the utility model embodiment three provides；
Figure 19 is the structure diagram of the underlying substrate for the antenna element that the utility model embodiment three provides；
Figure 20 is the matching properties schematic diagram for the antenna element that the utility model embodiment three provides；
Figure 21 is the directional diagram for the antenna element that the utility model embodiment three provides；
Figure 22 is that the axis for the antenna element that the utility model embodiment three provides compares directional diagram；
Figure 23 is the structure diagram for the aerial array that the utility model embodiment four provides；
Figure 24 is the side view for the aerial array that the utility model embodiment four provides；
Figure 25 is the structure diagram for not including top substrate layer for the aerial array that the utility model embodiment four provides；
Figure 26 is the bandwidth standing-wave ratio schematic diagram for the aerial array that the utility model embodiment four provides；
Figure 27 is the E faces directional diagram for the aerial array that the utility model embodiment four provides；
Figure 28 is the H faces directional diagram for the aerial array that the utility model embodiment four provides.
Description of reference numerals：
1-top substrate layer；2-underlying substrate；11-parasitic patch；21-radiation fin；22-feeding network；211-spoke
Penetrate side；221-distributing point；10-antenna element；100-aerial array.
Embodiment
It is new below in conjunction with this practicality to make the purpose, technical scheme and advantage of the utility model embodiment clearer
Attached drawing in type embodiment, the technical scheme in the utility model embodiment is clearly and completely described, it is clear that is retouched
The embodiment stated is the utility model part of the embodiment, instead of all the embodiments.Based on the implementation in the utility model
Example, those of ordinary skill in the art's all other embodiments obtained without creative efforts, belongs to
The scope of the utility model protection.
Fig. 1 is the structure diagram for the antenna element that the utility model embodiment one provides.Fig. 2 is that the utility model is implemented
The side view for the antenna element that example one provides.Fig. 3 is underlying substrate in the antenna element that the utility model embodiment one provides
Structure diagram.As shown in Figure 1 to Figure 3, antenna element provided in this embodiment, including spaced top substrate layer 1 is with
Laminar substrate 2, is provided with least one parasitic patch 11 in top substrate layer 1, radiation fin 21 and transmission network is provided with underlying substrate 2
Network 22, feeding network 22 are connected by two distributing points 221 with two corners of radiation fin 21.
Specifically, antenna element is mainly used in the wireless communication of equipment, it is usually located at transceiver and electromagnetic wave
Between communication space, and the transmission of effective energy transmission and information is realized between both by electromagnetic wave, thus can
The sensor mutually changed between radiofrequency signal and electromagnetic wave with being considered as.In order to normally be communicated, the antenna of the present embodiment
Unit generally mainly includes top substrate layer 1 and the grade of underlying substrate 2 part.Wherein, main letter of the underlying substrate 2 as antenna element
Number occur part, specifically include feeding network 22 and with feeding network 22 couple radiation fin 21.Radiation fin 21 generally by
Conducting medium is made, and has specific structure, and the electric signal received can be radiated to exterior sky in the form of an electromagnetic wave
Between, or receive the electromagnetic wave from exterior space.And coupled between feeding network 22 and radiation fin 21, to realize radiation fin 21
Connection and energy transmission between signal transmitting and receiving machine, so as to allow antenna element can be between transceiver and free surrounding space
Carry out the transmission of signal.Generally, radiation fin is usually square structure.
In order to realize feed of the feeding network 22 to radiation fin 21, antenna element can have a variety of feed forms.Wherein,
In order to realize more preferable antenna performance, usual feeding network 22 can realize the feed to antenna element by the way of corner-fed.
The feeding classification such as present compared to general bottom, the corner-fed technology that distributing point 221 is located at radiator patch corner location can allow day
Line has lower section, and since corner-fed mode can allow feeding network 22 to be located at radiation fin 21 on same layer dielectric-slab,
Its cost is lower.Specifically, in the present embodiment, feeding network 22 passes through two distributing points 221, two with radiation fin 21 respectively
Corner connects, so as to fulfill the corner-fed feed of antenna element.Wherein, the corner being connected with two distributing points 221 of radiation fin 21
Either two adjacent corners or two non-conterminous corners, spoke is connected to distributing point 221 in the present embodiment
Penetrate exemplified by two adjacent corners of piece 21 and illustrate.
At this time, in order to improve the performances such as the gain of antenna and bandwidth, the top of the underlying substrate 2 of antenna element is additionally provided with
Top substrate layer 1, has certain intervals between top substrate layer 1 and underlying substrate 2, and parasitic patch 11 is provided with top substrate layer 1.
Parasitic patch 11 is generally similarly conducting medium composition, and such parasitic patch 11 sets close to radiation fin 21, but with radiation fin 21
Between not in contact with.After parasitic patch 11 receives the emittance from radiation fin 21, you can produce sensing electric current, and root
The electric field to external radiation is produced according to sensing electric current, so as to be coupled between the radiation fin 21 on underlying substrate 2, and is formed newly
Resonance, strengthens the radianting capacity of radiation fin 21, with the increasing of the bandwidth of this effective extended antenna unit and increase antenna element
Benefit.
Generally, the top substrate layer 1 of antenna element can be glass-epoxy copper-clad plate, such as FR4 copper-clad plates
Deng, such top substrate layer 1 can ensure good electrical insulation properties, make parasitic patch 11 and antenna element lower layer part point it
Between form good resonant tank.And underlying substrate 2 can also be made of similar dielectric material.
Specifically, when antenna element is to exterior space radiation electromagnetic wave, the direction in space of electric field intensity endpoint in electromagnetic wave,
Namely the polarization direction of antenna can have a variety of multi-forms.Such as linear polarization and circular polarisation etc..
It is common, when antenna unit application is when in communication of the small-sized unmanned vehicle when equipment, because the angle of antenna
The installation direction of degree is relatively fixed, and the multipath effect of electromagnetic transmission is more obvious in some cases, may cause signal
Interference.When the angle between the plane of polarization of radio wave and the earth normal face is in the cyclically-varying at 0~360 degree of angle, i.e. electricity
Field size is constant, and when direction changes over time, the track of electric field intensity end is perpendicular to propagation side caused by antenna element
To plane on be projected as a circle, be known as circular polarisation.Circular polarized antenna can give off circularly polarised wave, and circularly polarised wave can
Orthogonal constant amplitude line polarization wave on room and time is resolved into, i.e., the amplitude of two line polarization waves is equal, and phase differs
90 degree.Circularly polarised wave is inciding plane, sphere when on symmetric targets, and the polarization of its back wave can produce opposite rotation direction,
So as to orthogonal with incidence wave, so that blanketing effect is produced, thus with the ability for suppressing misty rain interference and other multipath effects.
When circularly polarised wave is radiated on the water droplet in rain, mist, since water droplet is approximate circle, so can reflect derotation to circular polarisation
Ripple, and filtered off by equipment, and the back wave of asymmetric barrier or airbound target has the circularly polarised wave component with rotation direction,
It can smoothly be detected, so can effectively reduce the interference of multipath effect, improve the reliability of detection and communication.
In the present embodiment, antenna element is circular polarized antenna.In order to make antenna element produce circularly polarised wave, antenna can be made
There are 90 ° of phase differences between two distributing points 221 in unit.So feedback can be passed through by the linear polarization signal of feeding network 22
Electricity puts 90 ° of phase differences between 221 and distributes, the two paths of signals of phase difference 90 ° equal as amplitude, this two paths of signals is through feedback
Behind 221 input to two corners of radiation fin 21 of electricity point, you can realize circularly polarized signal.
Specifically, in the present embodiment, when antenna element is circular polarized antenna, since the radiation fin 21 in antenna element is adopted
With corner-fed feeding classification, and by setting parasitic patch 11 in top substrate layer 1, it so can effectively provide the band of antenna element
The various aspects of performance such as width.Fig. 4 is the matching properties schematic diagram for the antenna element that the utility model embodiment one provides.Fig. 5 is this
The directional diagram for the antenna element that utility model embodiment one provides.Fig. 6 is the antenna element that the utility model embodiment one provides
Axis compare directional diagram.As shown in Figure 4, Figure 5 and Figure 6, antenna element provided in this embodiment has 18.1% center opposite band
Wide ratio, and gain reaches 8.2dB, the beam angle of 3dB is 70 degree, and the axis ratio in 3dB beam angles is less than 4dB, has
Wider bandwidth and preferable directional gain.
As an alternative embodiment, projection of the parasitic patch 11 on underlying substrate 2 at least has with radiation fin 21
Overlap.E.g., parasitic patch 11 and radiation fin 21 are completely overlapped, and at this time, parasitic patch 11 is on underlying substrate 2
Projection can be of similar shape size and position with radiation fin 21, so as to allow both to be completely corresponded up and down setting；Either
Parasitic patch 11 has the area than 21 bigger of radiation fin, radiation fin 21 is covered completely by the projection of parasitic patch 11.
Alternatively, projection of the parasitic patch 11 on underlying substrate 2 can also be with a part for radiation fin 21 with overlapping.This
When can make it have preferable antenna performance by adjusting the shape or relative position of parasitic patch 11 and radiation fin 21.
Further, since the radiation fin 21 of antenna element is in radiated electromagnetic wave, electromagnetic wave is mainly by radiation fin 21
A certain edge is sent, and so the edge is the radiating side 211 of radiation fin 21.Thus in order to improve parasitic patch 11 to radiation fin
21 gain effect, the radiating side 211 of projection covering radiation fin 21 of the parasitic patch 11 on underlying substrate 2.So parasitic patch
Stronger resonance can be formed between piece 11 and radiation fin 21, so as to effectively strengthen bandwidth and the gain of antenna element, ensures day
Line unit has excellent telecommunication and detectivity.
In the present embodiment, since antenna element takes corner-fed mode to be fed, thus the radiating side 211 1 of radiation fin 21
As include the one side edge away from distributing point 221, that is, the one side edge opposite with 221 position of distributing point on radiation fin 21.
The projection of parasitic patch 11 is covered in above the edge, you can stronger by coupling generation in 21 radiated electromagnetic wave of radiation fin
Resonating electric field, improve radiation fin 21 radiance.
Optionally, in order to ensure to be coupled between parasitic patch 11 and radiation fin 21 and resonance, 1 He of top substrate layer
The preferable insulation of guarantee is generally required between underlying substrate 2.It is common, can be air between top substrate layer 1 and underlying substrate 2
Layer 3, i.e., directly isolated using air.Air can be antenna element at the middle and upper levels on substrate 1 as good insulating body
Insulation is provided between radiation fin 21 in parasitic patch 11 and underlying substrate 2, allows the parasitic patch 11 in antenna element can be just
Often work, to realize better performance, avoid because between parasitic patch 11 and radiation fin 21 produce contact conducting and caused by parasitism
The situation that patch 11 fails.Meanwhile the insulating layer between top substrate layer 1 and underlying substrate 2 is used air as, as long as upper strata base
Less gap is maintained between plate 1 and underlying substrate 2, you can realize mutually insulated using air, and in top substrate layer 1 with
The insulating layer that is made of insulating materials is set between laminar substrate 2 or is dielectrically separated from the mode of component and is compared, 1 He of top substrate layer
Very small gap can be formed between underlying substrate 2, ensures that formed antenna element has less thickness, i.e. antenna list
The section of member is relatively low.When so antenna element is arranged on the outer surface of aircraft, antenna element protrudes from aircraft outer surface
Height it is relatively low, can be formed between aircraft good conformal.
Wherein, optionally, in antenna element, the width in the gap between top substrate layer 1 and underlying substrate 2, that is, institute
In the range of the thickness of the air layer 3 of formation typically 0.077 λ to 0.5 λ.Wherein, λ is the corresponding wavelength of antenna element.
As one of which preferred embodiment, 3 thickness of air layer between top substrate layer 1 and underlying substrate 2 can be with
What is set is smaller, specifically may be set in 0.077 λ.3 thickness of air layer of so top substrate layer 1 and underlying substrate 2 is smaller, because
And antenna element can also have less integral thickness, so as to fulfill relatively low antenna section.
Specifically, radiation fin 21 is symmetrical relative to the center line between two distributing points 221.At this time, the spoke in antenna element
It is that symmetrical axially symmetric structure, center line the right and left have symmetrical and consistent radiation characteristic in penetrate piece 21.Thus
Can be by the way that antenna element be simply carried out mirror image, you can realize opposite polarization.
In addition, vee gutter can also be offered in the radiating side 211 of radiation fin 21.Common, vee gutter opens up
In the middle position of radiating side 211, for radiating side 211 does not open up vee gutter, vee gutter can improve antenna
Isolation, and cause radiation fin 21 current direction it is symmetrical, realize good circular polarization characteristics.
Specifically, in the corner of radiation fin 21, there can be corner cut without the apex angle corner connected with distributing point 221.This
Sample cuts a part by radiation fin 21 without the apex angle connected with distributing point 221, can improve the standing wave of antenna element, ensures
Matching inside antenna element between each component.
Specifically, radiation patch can also have a variety of different shapes in antenna element, such as radiation patch can be
The shapes such as square, circular, annular and square corner cut.Fig. 7 be the utility model embodiment one provide radiation patch not
Similar shape schematic diagram.As shown in fig. 7, the shape of radiation patch is square in (a), radiation patch is circle in (b), spoke in (c)
Patch is penetrated as annular, and the shape of radiation patch is square in (d), and the corner cut shape that corner is cut out.In addition, radiation patch
It can also be other different shapes, be repeated no more in the present embodiment.
Generally, parasitic patch 11 also has a variety of different setting positions in top substrate layer 1.Such as parasitic patch 11
Upper surface or lower surface of top substrate layer 1 etc. can be located at.
As the optional embodiment of one of which, in order to improve the electricity of the coupling between parasitic patch 11 and radiation fin 21
, parasitic patch 11 is sticked in the lower surface of top substrate layer 1.At this time, the distance between parasitic patch 11 and radiation fin 21 are relatively near,
Stronger coupled electric field can be formed, effectively improves the bandwidth of antenna element and the gain of antenna element.
In order to realize the transmission of radiofrequency signal between radiation fin 21, feeding network 22 specifically may include two respectively with feedback
The microstrip line of 221 connection of electricity point, every microstrip line are both connected between the feed placement of distributing point 221 and feeding network 22.
Microstrip line is the microwave transmission line being made of the plain conductor band propped up on dielectric substrate.It is adapted to make the flat of microwave integrated circuit
Face structural transmission line.Compared with metal waveguide, have it is small, light-weight, service band is wide, reliability it is high with manufacture cost it is low
The advantages that.Microstrip line can be made of metal or other conductor materials.
In the present embodiment, antenna element includes spaced top substrate layer and underlying substrate, is provided with top substrate layer
At least one parasitic patch, is provided with radiation fin and feeding network on underlying substrate, feeding network passes through two distributing points and spoke
Penetrate two corners connection of piece.So antenna element can realize preferable bandwidth, gain and Circular polarization ratio characteristic etc., so that
Reach excellent radiance and impedance behavior.
Embodiment two
On the basis of the antenna element of above-described embodiment one, the utility model also provides a kind of aerial array, Neng Gouli
Preferable antenna performance is realized with the excellent bandwidth and gain characteristic of the antenna element of previous embodiment one.Fig. 8 is this practicality
The structure diagram for the aerial array that new embodiment two provides.Fig. 9 is the aerial array that the utility model embodiment two provides
Side view.Figure 10 is structural representation of the aerial array of the offer of the utility model embodiment two when not including top substrate layer
Figure.As shown in Fig. 8, Fig. 9 and Figure 10, in aerial array 100 provided in this embodiment, including at least two such as previous embodiment one
The antenna element 10, wherein, the structure and operation principle of antenna element 10 have carried out specifically in previous embodiment one
Bright, details are not described herein again.
In this way, after antenna element 10 forms aerial array 100, due to having mutiple antennas unit 10 in aerial array 100,
So antenna element 10 can be correspondingly arranged at different directions respectively, to improve the omni-directional of aerial array and reliability.
Wherein, aerial array 100 can include four antenna elements 10, and four antenna elements 10 surround circlewise, and respectively
Antenna element 10 is rotated by 90 ° both with respect to adjacent antenna units；The current feed phase of antenna element 10 differs 90 ° successively.
Specifically, as shown in figure 8, in aerial array 100, it is mutually perpendicular between adjacent antenna element 10, and from lower-left
The antenna element at angle starts, and the current feed phase of antenna element 10 lags 0 degree, 90 degree, 180 degree and 270 degree, such four days successively
Line unit 10 constitutes antenna rotation group battle array, can realize good antenna performance in all directions.
Optionally, in the aerial array 100, in order to avoid the interference between adjacent antenna units, while antenna is ensured
The integrated antenna performance of array 100, the spacing between two neighboring antenna element 10 are generally kept in 0.5 λ between 0.8 λ, its
Middle λ is the wavelength of antenna element 10.Suitable array pitch can improve the signal of antenna element 10, it is ensured that aerial array 100
Normal work.Wherein, the spacing between two neighboring antenna element 10 can remain 0.61 λ.
Figure 11 is the bandwidth impedance characteristic schematic diagram for the aerial array that the utility model embodiment two provides.Figure 12 is this reality
The E faces directional diagram of the aerial array provided with new embodiment two.As is illustrated by figs. 11 and 12, the aerial array in the present embodiment
100, its gain reaches 12dBi, and 3dB beam angles are 42 degree, and the main-side lobe ratio of antenna is more than 15dB, and front and rear ratio is more than 11dB.
Figure 13 is the H faces directional diagram for the aerial array that the utility model embodiment two provides.It has similar with Figure 12
Characteristic.
Figure 14 is that the E faces axis for the aerial array that the utility model embodiment two provides compares directional diagram.Figure 15 is that this practicality is new
The H faces axis for the aerial array that type embodiment two provides compares directional diagram.As shown in Figure 14 and Figure 15, it can be seen that in aerial array,
Axis than 3dB beam angles be more than antenna main lobe 3dB beam angles.
Figure 16 is that the aerial array that the utility model embodiment two provides is schemed in the axis ratio of different frequency.As shown in figure 16,
Aerial array has good axis ratio characteristic, and in 15.1% bandwidth, the axis ratio of antenna is less than 1dB, the axial ratio bandwidth of its 3dB
For 18.5%.
In the present embodiment, aerial array includes at least two antenna elements；Wherein antenna element is included on spaced
Laminar substrate and underlying substrate, are provided with least one parasitic patch in top substrate layer, radiation fin and feedback are provided with underlying substrate
Electric network, feeding network are connected by two distributing points with two corners of radiation fin.So aerial array can be realized preferably
Bandwidth, gain and Circular polarization ratio characteristic etc., so as to reach excellent radiance and impedance behavior.
Embodiment three
Illustrated in above-described embodiment one and embodiment two by taking antenna element is circular polarized antenna as an example.And work as antenna list
When member is linear polarized antenna, similar antenna unit structure is equally applicable to.Figure 17 is that the utility model embodiment three provides
The structure diagram of antenna element.Figure 18 is the side view for the antenna element that the utility model embodiment three provides.Figure 19 is this
The structure diagram of the underlying substrate for the antenna element that utility model embodiment three provides.As shown in Figures 17 to 19, this implementation
The antenna element that example provides equally has the antenna unit structure similar with embodiment one, that is, specifically includes on spaced
Laminar substrate 1 and underlying substrate 2, are provided with least one parasitic patch 11 in top substrate layer 1, radiation are provided with underlying substrate 2
Piece 21 and feeding network 22, feeding network 22 are connected by two distributing points 221 with two corners of radiation fin 21.
Wherein, the antenna element provided in the present embodiment, its concrete structure and operation principle and previous embodiment one with
And the antenna element in embodiment two is similar, details are not described herein again, and difference is, antenna element provided in this embodiment
In, feeding network 22 is when realizing feed, the mode using two distributing points 221 with mutually feed, i.e. two distributing points 221
Between phase difference be 0.Two such distributing point 221 is fed in the same direction using corner-fed mode to radiation fin 21, makes antenna element
Generation line polarization wave is detected and signal transmission.
Wherein, Figure 20 is the matching properties schematic diagram for the antenna element that the utility model embodiment three provides.Figure 21 is this
The directional diagram for the antenna element that utility model embodiment three provides.Figure 22 is the antenna element that the utility model embodiment three provides
Axis compare directional diagram.As shown in Figure 20, Figure 21 and Figure 22, the relative bandwidth with 15.4% of antenna element.And the increasing of antenna
Benefit is 8.2dBi, 70 degree of the 3dB beam angles in E faces.
In the present embodiment, antenna element includes spaced top substrate layer and underlying substrate, is provided with top substrate layer
At least one parasitic patch, is provided with radiation fin and feeding network on underlying substrate, feeding network passes through two distributing points and spoke
Two corners connection of piece is penetrated, phase difference of the feeding network when realizing feed between two distributing points is 0.Such antenna element
Preferable bandwidth, gain and linear polarization performance can be realized, so as to reach excellent radiance and impedance behavior.
Example IV
When antenna element is linear polarized antenna, mutiple antennas unit remains able to form the antenna similar with embodiment two
Array structure.Figure 23 is the structure diagram for the aerial array that the utility model embodiment four provides.Figure 24 is the utility model
The side view for the aerial array that example IV provides.Figure 25 is not including for the aerial array that the utility model embodiment four provides
The structure diagram of top substrate layer.It is similar with previous embodiment two as shown in Figure 23, Figure 24 and Figure 25, it is same in aerial array 200
Sample includes mutiple antennas unit 20.Wherein, the structure of antenna element 20 and operation principle be and the day in previous embodiment three
Line unit is identical, that is, specifically includes spaced top substrate layer and underlying substrate, at least one post is provided with top substrate layer
Raw patch, is provided with radiation fin and feeding network on underlying substrate, feeding network pass through two distributing points and radiation fin two
Corner connects, and has 90 ° of phase differences between two distributing points, and feeding network is fed when realizing feed using two
The mode that feeds in the same direction of point, i.e. phase difference between two distributing points is 0.Wherein, the concrete structure of antenna element is foregoing
It is described in detail in embodiment one to three, details are not described herein again.
Specifically, in the present embodiment, four antenna elements, 20 visit symmetrical above and below of aerial array 200, and spatially
It is anti-phase, the current feed phase of two antenna elements above postpones relative to the current feed phase of two following antenna elements
180 degree, to ensure the uniformity of antenna phase.
Figure 26 is the bandwidth standing-wave ratio schematic diagram for the aerial array that the utility model embodiment four provides.Figure 27 is this practicality
The E faces directional diagram for the aerial array that new embodiment four provides.Figure 28 is the aerial array that the utility model embodiment four provides
H faces directional diagram.As shown in Figure 26, Figure 27 and Figure 28, the aerial array 200 in the present embodiment, its gain reaches 12.1dBi,
The main-side lobe ratio of antenna is more than 13dB, and front and rear ratio is more than 11dB.
Include mutiple antennas unit in the present embodiment, in aerial array, antenna element includes spaced upper strata base
Plate and underlying substrate, are provided with least one parasitic patch in top substrate layer, radiation fin and transmission network are provided with underlying substrate
Network, feeding network are connected by two distributing points with two corners of radiation fin, feeding network two feeds when realizing feed
Phase difference between point is 0.So aerial array can realize preferable bandwidth, gain and linear polarization performance, so as to reach excellent
Different radiance and impedance behavior.
Finally it should be noted that：Various embodiments above is only to illustrate the technical solution of the utility model, rather than it is limited
System；Although the utility model is described in detail with reference to foregoing embodiments, those of ordinary skill in the art should
Understand：It can still modify the technical solution described in foregoing embodiments, either to which part or whole
Technical characteristic carries out equivalent substitution；And these modifications or replacement, the essence of appropriate technical solution is departed from this practicality newly
The scope of each embodiment technical solution of type.
Claims (10)
1. a kind of antenna element, it is characterised in that including spaced top substrate layer and underlying substrate, in the top substrate layer
At least one parasitic patch is provided with, radiation fin and feeding network are provided with the underlying substrate, the feeding network passes through
Two distributing points are connected with two corners of the radiation fin.
2. antenna element according to claim 1, it is characterised in that there are 90 ° of phase differences between described two distributing points.
3. antenna element according to claim 1 or 2, it is characterised in that the parasitic patch is on the underlying substrate
Projection and the radiation fin at least have and partly overlap.
4. antenna element according to claim 3, it is characterised in that throwing of the parasitic patch on the underlying substrate
Shadow covers the radiating side of the radiation fin.
5. antenna element according to claim 1 or 2, it is characterised in that the top substrate layer and the underlying substrate it
Between be air layer.
6. antenna element according to claim 1 or 2, it is characterised in that the radiation fin is relative to two feeds
Center line between point is symmetrical.
7. antenna element according to claim 1 or 2, it is characterised in that the feeding network include two respectively with institute
The microstrip line of distributing point connection is stated, every microstrip line is both connected to the feed position of the distributing point and the feeding network
Between putting.
8. antenna element according to claim 1 or 2, it is characterised in that the parasitic patch is sticked in the upper strata base
The lower surface of plate.
9. a kind of aerial array, it is characterised in that including at least two such as claim 1-8 any one of them antenna elements.
10. aerial array according to claim 9, it is characterised in that including four antenna elements, four days
Line unit surrounds circlewise, and each antenna element is rotated by 90 ° both with respect to the adjacent antenna element；The antenna element
Current feed phase differ 90 ° successively.
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721476494.6U CN207353459U (en) | 2017-11-08 | 2017-11-08 | Antenna element and aerial array |
| CN201780066009.4A CN110419144A (en) | 2017-11-08 | 2017-12-22 | Antenna element and aerial array |
| PCT/CN2017/118044 WO2019090927A1 (en) | 2017-11-08 | 2017-12-22 | Antenna unit and antenna array |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721476494.6U CN207353459U (en) | 2017-11-08 | 2017-11-08 | Antenna element and aerial array |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207353459U true CN207353459U (en) | 2018-05-11 |
Family
ID=62354084
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721476494.6U Expired - Fee Related CN207353459U (en) | 2017-11-08 | 2017-11-08 | Antenna element and aerial array |
| CN201780066009.4A Pending CN110419144A (en) | 2017-11-08 | 2017-12-22 | Antenna element and aerial array |
Family Applications After (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201780066009.4A Pending CN110419144A (en) | 2017-11-08 | 2017-12-22 | Antenna element and aerial array |
Country Status (2)
| Country | Link |
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| CN (2) | CN207353459U (en) |
| WO (1) | WO2019090927A1 (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2019090927A1 (en) * | 2017-11-08 | 2019-05-16 | 深圳市大疆创新科技有限公司 | Antenna unit and antenna array |
| CN110635230A (en) * | 2018-06-25 | 2019-12-31 | 哈尔滨工业大学（威海） | Asymmetric dual-polarized antenna device based on SICL resonant cavity circular ring gap and printed oscillator |
| CN110649378A (en) * | 2019-09-24 | 2020-01-03 | 四川省电子信息产业技术研究院有限公司 | Satellite antenna based on double-point side feed |
| CN114050410A (en) * | 2021-12-30 | 2022-02-15 | 陕西海积信息科技有限公司 | Circularly polarized antenna and reference station |
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| US6288677B1 (en) * | 1999-11-23 | 2001-09-11 | The United States Of America As Represented By The Administrator Of The National Aeronautics And Space Administration | Microstrip patch antenna and method |
| WO2005008833A1 (en) * | 2003-07-16 | 2005-01-27 | Huber + Suhner Ag | Dual polarised microstrip patch antenna |
| KR100527851B1 (en) * | 2003-12-17 | 2005-11-15 | 한국전자통신연구원 | Stacked Microstrip Antenna using Metal Sheet with Aperture |
| US8334810B2 (en) * | 2008-06-25 | 2012-12-18 | Powerwave Technologies, Inc. | Resonant cap loaded high gain patch antenna |
| CN201490330U (en) * | 2009-04-02 | 2010-05-26 | 普天首信通信设备厂（集团） | Beam-adjustable circularly polarized antenna applicable to electronic toll collection |
| CN103165988A (en) * | 2013-03-13 | 2013-06-19 | 电子科技大学 | Broadband circularly-polarized radio frequency identification (RFID) reader antenna |
| CN104157978B (en) * | 2014-05-20 | 2016-08-17 | 电子科技大学 | A kind of corner-fed high isolation dual polarized stacked microstrip antenna of modified model |
| CN204333243U (en) * | 2014-12-26 | 2015-05-13 | 航天信息股份有限公司 | A kind of micro-strip antenna array |
| CN105071047A (en) * | 2015-07-28 | 2015-11-18 | 哈尔滨工程大学 | Multi-band micro-strip antenna with expanded impedance bandwidth |
| CN205429159U (en) * | 2016-03-24 | 2016-08-03 | 天津大学 | Broadband antenna based on coplane waveguide feed |
| CN105680172A (en) * | 2016-03-24 | 2016-06-15 | 天津大学 | Coplanar waveguide feed based wide-band antenna |
| CN105720364B (en) * | 2016-04-06 | 2019-03-05 | 华南理工大学 | It is a kind of with highly selective and low-cross polarization dual polarization filter antenna |
| CN107069195A (en) * | 2016-12-28 | 2017-08-18 | 北京握奇智能科技有限公司 | A kind of circular polarization microstrip antenna |
| CN207353459U (en) * | 2017-11-08 | 2018-05-11 | 深圳市大疆创新科技有限公司 | Antenna element and aerial array |
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2017
- 2017-11-08 CN CN201721476494.6U patent/CN207353459U/en not_active Expired - Fee Related
- 2017-12-22 CN CN201780066009.4A patent/CN110419144A/en active Pending
- 2017-12-22 WO PCT/CN2017/118044 patent/WO2019090927A1/en active Application Filing
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2019090927A1 (en) * | 2017-11-08 | 2019-05-16 | 深圳市大疆创新科技有限公司 | Antenna unit and antenna array |
| CN110419144A (en) * | 2017-11-08 | 2019-11-05 | 深圳市大疆创新科技有限公司 | Antenna element and aerial array |
| CN110635230A (en) * | 2018-06-25 | 2019-12-31 | 哈尔滨工业大学（威海） | Asymmetric dual-polarized antenna device based on SICL resonant cavity circular ring gap and printed oscillator |
| CN110649378A (en) * | 2019-09-24 | 2020-01-03 | 四川省电子信息产业技术研究院有限公司 | Satellite antenna based on double-point side feed |
| CN114050410A (en) * | 2021-12-30 | 2022-02-15 | 陕西海积信息科技有限公司 | Circularly polarized antenna and reference station |
Also Published As
| Publication number | Publication date |
|---|---|
| CN110419144A (en) | 2019-11-05 |
| WO2019090927A1 (en) | 2019-05-16 |
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