CN205051004U - Reflecting antenna - Google Patents
Reflecting antenna Download PDFInfo
- Publication number
- CN205051004U CN205051004U CN201520546819.8U CN201520546819U CN205051004U CN 205051004 U CN205051004 U CN 205051004U CN 201520546819 U CN201520546819 U CN 201520546819U CN 205051004 U CN205051004 U CN 205051004U
- Authority
- CN
- China
- Prior art keywords
- feed
- curved surface
- reflecting
- principal reflection
- panel
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Landscapes
- Aerials With Secondary Devices (AREA)
Abstract
The utility model discloses a reflecting antenna. Wherein, this reflecting antenna includes: the feed for the transmission electromagnetic wave, vice reflection curved surface is located feed radiation mouthful one side for compose shape to the electromagnetic wave, and the principal reflection panel, be located the opposite side that the feed radiated the mouth for to composing the electromagnetic wave modulate after the shape, make the electromagnetic wave after making have the same phase place. The utility model provides a low technical problem of the utilization ratio of the dull and stereotyped reflective array panel of antenna among the prior art.
Description
Technical field
The utility model relates to field of antenna, in particular to a kind of reflecting antenna.
Background technology
Along with the fast development of communication technology of satellite, the application of reflecting antenna is more and more extensive.Reflecting antenna is made up of feed and dull and stereotyped reflective array.Wherein, the planar array that is made up of the microband paste unit be printed in a large number on dielectric substrate of flat reflective array.The operation principle of reflecting antenna is: the electromagnetic wave launched by feed arrives each unit on flat reflective array along different transmission path, the in-field that transmission path difference causes different units to receive has different space phases, by each unit of appropriate design, make it make different phase compensation to different in-fields, allow mirror field on antenna opening diametric plane, form required same-phase wavefront.
The feed of existing reflecting antenna adopts loudspeaker direct irradiation, and its radiation modality can be divided into vertical irradiation (just presenting) and oblique incidence (offset-fed) two kinds.During Feed Horn oblique incidence square plate reflective array panel of the prior art in electromagnetic wave power distribution, the power density that the isopleth of-10dB to represent on flat reflective array panel herein reduces to 1/10th of radiosity maximum, wherein ,-10dB isopleth is an ellipse when Feed Horn oblique incidence square plate reflective array panel.In order to obtain the utilance of as far as possible large plate reflective array panel, this ellipse is inscribed within square plate reflective array panel, the area at square plate reflective array panel corner place is not utilized, and electromagnetic power density is not equally distributed on whole square plate reflective array panel, the power of square plate reflective array face plate edge is also uncontrollable, the sidelobe level of antenna will be caused so likely not meet International Satellite Organization for antenna sidelobe envelope specification, namely the sidelobe level of antenna cannot exceed-14dB, simultaneously, electromagnetic power density skewness on whole flat reflective array panel also will cause can not being optimized the optimum phase modulating performance of flat reflective array panel.In addition, no matter existing reflecting antenna adopts just is being presented or offset-fed mode, and feed all can have blocking to a certain degree to the electromagnetic wave that flat reflective array panel sends, and reduces the overall efficiency of antenna.
For the problem that the utilance of the flat reflective array panel of antenna in prior art is low, at present effective solution is not yet proposed.
Utility model content
The utility model provides a kind of reflecting antenna, with the technical problem that the utilance of the flat reflective array panel at least solving antenna in prior art is low.
According to an aspect of the present utility model, provide a kind of reflecting antenna, comprising: feed, for emitting electromagnetic wave; Secondary reflecting curved surface, is positioned at feed radiation port side, for carrying out figuration to electromagnetic wave; And principal reflection panel, being positioned at the opposite side of feed radiation port, for modulating the electromagnetic wave after figuration, making the electromagnetic wave after modulating have identical phase place.
Further, secondary reflecting curved surface is umbrella curved surface.
Further, the middle part of secondary reflecting curved surface is concave surface and caves in feed direction.
Further, secondary reflecting curved surface is divided into the subsurface of multiple seamless link each other, and the public connecting portion of multiple subsurface is the middle part of secondary reflecting curved surface.
Further, each subsurface is concave surface and caves in feed direction.
Further, the cross section of secondary reflecting curved surface is polygon, and polygonal each limit is curve and to polygonal center curvature.
Further, the juncture area of adjacent two subsurfaces is convex surface and caves in the direction away from feed.
Further, principal reflection panel comprises: multiple phasing unit, wherein, has identical phase place by the electromagnetic wave after each phasing unit adjusted in multiple phasing unit controls figuration.
Further, principal reflection panel is Meta Materials Reflector Panel.
Further, Meta Materials Reflector Panel comprises: medium substrate; Be arranged on multiple conduction geometries on medium substrate surface; And be arranged on medium substrate with the reflector on relative another surface of conduction geometry.
Further, reflector is metal level.
Further, the shape of Meta Materials Reflector Panel is rectangle.
Further, the point on secondary reflecting curved surface meets following relation: tan (θ+ψ)/2=d ρ/(ρ d ρ); And KP (θ, φ) dA (θ, φ)=G
f(ψ, θ) dA
f(ψ, θ), wherein, K is preset constant, and the point on secondary reflecting curved surface is the point under polar coordinate system, and ρ is the footpath, pole of the point on secondary reflecting curved surface, and φ is the polar angle of the point on secondary reflecting curved surface, and the origin of coordinates of polar coordinate system is the phase center of feed, G
f(ψ, θ) is feed directional diagram, the differential bin that P (θ, φ) is reflection direction figure for reflection direction figure, dA (θ, φ), dA
f(ψ, θ) be the differential bin of feed directional diagram, ψ is incidence angle, θ is angle of reflection, incidence angle is the angle of the axis of electromagnetic incident direction and feed, angle of reflection is the angle of the axis of electromagnetic reflection direction and feed, and incidence angle and angle of reflection are determined by the size of principal reflection panel and the first distance, and the first distance is the distance between feed and principal reflection panel.
Further, the electromagnetic power density on principal reflection panel after figuration distributes ringwise, and wherein, the external boundary of annular is inscribed within the border of principal reflection panel, and the projection of feed on principal reflection panel drops in the inner boundary of annular.
Further, the electromagnetic power density after figuration is uniformly distributed in the region of annular spread.
Further, feed is connected with principal reflection panel by link.
Further, link is circular waveguide tube or support bar, and feed is along circular waveguide tube or support bar axially mobilizable setting.
In the utility model, reflecting antenna comprises feed, principal reflection panel and subreflector plate, wherein, subreflector plate is determined by the size of principal reflection panel and the distance between feed and principal reflection panel, by subreflector plate, figuration is carried out to the electromagnetic wave that feed sends, make the electromagnetic power density after reflexing to the figuration on principal reflection panel in annular spread equably, reach the object improving principal reflection panel utilization, thus achieve the technique effect improving reflecting antenna overall efficiency, and then the technical problem that the utilance of flat reflective array panel solving antenna in prior art is low.
Accompanying drawing explanation
Accompanying drawing described herein is used to provide further understanding of the present utility model, and form a application's part, schematic description and description of the present utility model, for explaining the utility model, is not formed improper restriction of the present utility model.In the accompanying drawings:
Fig. 1 is the schematic diagram of the reflecting antenna according to the utility model embodiment;
Fig. 2 a is the oblique elevational schematic view of the Feed Horn according to the utility model embodiment;
Fig. 2 b is the oblique schematic top plan view of the Feed Horn according to the utility model embodiment;
Fig. 2 c is the generalized section of the Feed Horn according to the utility model embodiment;
Fig. 3 is the schematic diagram of incidence angle according to the utility model embodiment and angle of reflection;
Fig. 4 a is the schematic diagram of the secondary reflecting curved surface according to the utility model first embodiment;
Fig. 4 b is the schematic top plan view of the secondary reflecting curved surface according to the utility model first embodiment;
Fig. 5 a is the schematic diagram of the secondary reflecting curved surface according to the utility model second embodiment;
Fig. 5 b is the schematic top plan view of the secondary reflecting curved surface according to the utility model second embodiment; And
Fig. 6 is the flow chart of the method for designing of reflecting antenna according to the utility model embodiment.
Embodiment
The utility model scheme is understood better in order to make those skilled in the art person, below in conjunction with the accompanying drawing in the utility model embodiment, technical scheme in the utility model embodiment is clearly and completely described, obviously, described embodiment is only the embodiment of the utility model part, instead of whole embodiments.Based on the embodiment in the utility model, those of ordinary skill in the art are not making the every other embodiment obtained under creative work prerequisite, all should belong to the scope of the utility model protection.
It should be noted that, term " first ", " second " etc. in specification of the present utility model and claims and above-mentioned accompanying drawing are for distinguishing similar object, and need not be used for describing specific order or precedence.Should be appreciated that the data used like this can be exchanged in the appropriate case, so as embodiment of the present utility model described herein can with except here diagram or describe those except order implement.In addition, term " comprises " and " having " and their any distortion, intention is to cover not exclusive comprising, such as, contain those steps or unit that the process of series of steps or unit, method, system, product or equipment is not necessarily limited to clearly list, but can comprise clearly do not list or for intrinsic other step of these processes, method, product or equipment or unit.
According to the utility model embodiment, provide a kind of reflecting antenna.Fig. 1 is the schematic diagram of the reflecting antenna according to the utility model embodiment, and as shown in Figure 1, the reflecting antenna of this embodiment comprises: feed 10, secondary reflecting curved surface 20 and principal reflection panel 30.
Feed 10, for emitting electromagnetic wave.Feed 10 in this embodiment is Feed Horn, Fig. 2 a is the oblique elevational schematic view of the Feed Horn according to the utility model embodiment, Fig. 2 b is the oblique schematic top plan view of the Feed Horn according to the utility model embodiment, Fig. 2 c is the generalized section of the Feed Horn according to the utility model embodiment, as Fig. 2 a, Fig. 2 b, shown in Fig. 2 c, Feed Horn can comprise the feed section 31, transition change section 32 and the radiation port section 33 that connect successively, wherein, feed section center is provided with metal partion (metp) 34.The radiation port of Feed Horn is circular, and Feed Horn is upper and lower about himself central axis, left and right is all symmetrical, so greatly optimizes the performance of the transmitting Homogeneous Electromagnetic Wave of Feed Horn.Feed Horn can be existing special-shaped flare angle variation differential mode loudspeaker, and the radiation port of Feed Horn can be circular, and the radiation port of Feed Horn also can be octagon.
Secondary reflecting curved surface 20, be positioned at feed 10 radiation port side, for carrying out figuration to electromagnetic wave, wherein, secondary reflecting curved surface 20 is the curved surfaces determined by the size of principal reflection panel 30 and the distance between feed 10 and principal reflection panel 30.
Alternatively, the point on secondary reflecting curved surface 20 meets following relation: tan (θ+ψ)/2=d ρ/(ρ d ρ); And KP (θ, φ) dA (θ, φ)=G
f(ψ, θ) dA
f(ψ, θ), wherein, K is preset constant, and the point on secondary reflecting curved surface is the point under polar coordinate system, and ρ is the footpath, pole of the point on secondary reflecting curved surface, and φ is the polar angle of the point on secondary reflecting curved surface, and the origin of coordinates of polar coordinate system is the phase center of feed, G
f(ψ, θ) is feed directional diagram, the differential bin that P (θ, φ) is reflection direction figure for reflection direction figure, dA (θ, φ), dA
fthe differential bin that (ψ, θ) is feed directional diagram.Fig. 3 is the schematic diagram of incidence angle according to the utility model embodiment and angle of reflection, as shown in Figure 3, ψ is incidence angle, θ is angle of reflection, incidence angle is the angle of the axis of electromagnetic incident direction and feed, angle of reflection is the angle of the axis of electromagnetic reflection direction and feed, and incidence angle and angle of reflection are determined by the size of principal reflection panel and the first distance, and the first distance is the distance between feed and principal reflection panel.
Secondary reflecting curved surface 20 is Irregular Boundary Surface, and each point on secondary reflecting curved surface 20 all meets above-mentioned relation.According to the difference of the design requirement of reality, the size of principal reflection panel and the distance between feed from principal reflection panel different, correspondingly, the shape of secondary reflecting curved surface 20 also can be different.Such as, Fig. 4 a is the schematic diagram of the secondary reflecting curved surface according to the utility model first embodiment, Fig. 4 b is the schematic top plan view of the secondary reflecting curved surface according to the utility model first embodiment, Fig. 5 a is the schematic diagram of the secondary reflecting curved surface according to the utility model second embodiment, Fig. 5 b is the schematic top plan view of the secondary reflecting curved surface according to the utility model second embodiment, Fig. 4 a, Fig. 4 b and Fig. 5 a, secondary reflecting curved surface shown in Fig. 5 b is determine according to the size of two kinds of different principal reflection panels and the distance between feed and principal reflection panel the secondary reflecting curved surface that obtains respectively.As shown in Fig. 4 a, Fig. 4 b, Fig. 5 a and Fig. 5 b, secondary reflecting curved surface 20 is in umbrella curved surface, and it can be divided into the subsurface of multiple seamless link each other, and the public connecting portion of multiple subsurface is the middle part of secondary reflecting curved surface 20.The middle part of secondary reflecting curved surface 20 is concave surface and caves in feed 10 direction.Each subsurface in multiple subsurfaces of secondary reflecting curved surface 20 is concave surface and caves in feed direction, and the juncture area of adjacent two subsurfaces is convex surface and caves in the direction away from feed.The cross section of secondary reflecting curved surface 20 is polygon, and polygonal each limit is curve and to polygonal center curvature.Secondary reflecting curved surface shown in Fig. 4 a, Fig. 4 b, Fig. 5 a and Fig. 5 b is the preferred embodiment of the secondary reflecting curved surface of the utility model, according to the size of principal reflection panel and the distance between feed and principal reflection panel, secondary reflecting curved surface in the utility model can also have multiple different shape, illustrates no longer one by one herein.
As shown in Figure 1, the phase center of the feed 10 in this embodiment is positioned in the focus of secondary reflecting curved surface 20, is connected between feed 10 with secondary reflecting curved surface 20 by interface components such as Metallic rod.The electromagnetic wave irradiation that feed 10 in the reflecting antenna of this embodiment sends is to secondary reflecting curved surface 20, by controlling the space coordinates of each point on secondary reflecting curved surface 20, realize secondary reflecting curved surface 20 pairs of electromagnetic waves and carry out figuration, the electromagnetic wave after figuration is reflexed on principal reflection panel 30 according to demand direction.In order to improve the efficiency of reflecting antenna, secondary reflecting curved surface 20 in this embodiment carries out figuration by according to following demand to electromagnetic wave: the electromagnetic power density on principal reflection panel after figuration is uniformly distributed, and the electromagnetic power density after figuration is distributed on whole principal reflection panel as best one can, to reach the effect improving principal reflection panel utilization.
Principal reflection panel 30, is positioned at the opposite side of feed 10 radiation port, has identical phase place for adjusting the electromagnetic wave after figuration.Principal reflection panel 30 in this embodiment is Meta Materials Reflector Panel, and the shape of Meta Materials Reflector Panel is rectangle, and the such as length of side is the square Meta Materials Reflector Panel of 1.2 meters.Meta Materials Reflector Panel can comprise: medium substrate; Be arranged on multiple conduction geometries on medium substrate one surface; And be arranged on medium substrate with the reflector on relative another surface of conduction geometry, wherein, reflector is metal level.The principal reflection panel of this embodiment adopts the Meta Materials Reflector Panel possessing conduction geometry and metallic reflector, be conducive to accurate analysis principal reflection panel to power on the phase information of field intensity, with the electromagnetic wave effectively controlling the reflection of principal reflection panel, there is identical phase place, thus reach the gain of raising reflecting antenna, improve the technique effect of reflecting antenna overall efficiency.Meanwhile, adopt the Meta Materials Reflector Panel possessing conduction geometry and metallic reflector as principal reflection panel, also can improve the intensity of principal reflection panel reflection electromagnetic wave, and then the intensity that raising reflecting antenna transmits.Alternatively, the feed 10 in this embodiment is connected with principal reflection panel 30 by link, and wherein, link can be circular waveguide tube, also can be miscellaneous part, such as support bar.Feed 10 is arranged along the axis at principal reflection panel 30 center, and and principal reflection panel 30 interval arrange, make to have certain distance between feed 10 and principal reflection panel 30, this distance determines shape and the size of secondary reflecting curved surface jointly with the size of principal reflection panel.Feed 10 is along the mobilizable setting in circular waveguide tube direction, and object is the distance in order to adjust flexibly between feed 10 and principal reflection panel 30, and then calculates more satisfactory secondary reflecting curved surface, reaches the object improving principal reflection panel utilization.
Alternatively, the reflecting antenna of this embodiment also comprises: regulate support, and wherein, regulate support installing in one end of link, principal reflection panel 30 is arranged on the other end of link.Regulate support along the mobilizable setting in circular waveguide tube direction, and feed 10 is arranged on and regulates on support, so namely support can be regulated to regulate distance between feed 10 and principal reflection panel 30 by adjustment.
Alternatively, the reflecting antenna of this embodiment adopts the burnt method of just presenting of ring, and by one structure integrated to feed 10 and secondary reflecting curved surface 20, this structure becomes figuration subreflector ring-focus feed.Figuration subreflector ring-focus feed comprises feed 10 and secondary reflecting curved surface 20, and figuration subreflector ring-focus feed is positioned at the overcentre of principal reflection panel 30, is connected with principal reflection panel 30 by link (such as circular waveguide tube or support bar).Figuration subreflector ring-focus feed is also arranged along the axis at principal reflection panel 30 center, and and principal reflection panel 30 interval arrange, and along the mobilizable setting in circular waveguide tube direction, the distance between figuration subreflector ring-focus feed and principal reflection panel can be regulated so easily.Feed 10 and secondary reflecting curved surface 20 are integrated in a structure by this embodiment, i.e. figuration subreflector ring-focus feed, reduce the size of reflecting antenna to a certain extent, simultaneously, be conducive to avoiding the electromagnetic wave from the reflection of principal reflection panel to be blocked by feed or secondary reflecting curved surface, improve the overall efficiency of reflecting antenna.
Alternatively, the electromagnetic power density on the principal reflection panel 30 of the reflecting antenna of this embodiment after figuration is in annular spread equably.Electromagnetic power density on principal reflection panel 30 after figuration distributes ringwise, and is uniformly distributed in annular region.Wherein, the external boundary of annular is inscribed within the border of principal reflection panel 30, and the projection of feed 10 on principal reflection panel 30 drops in the inner boundary of annular.Alternatively, the projection of secondary reflecting curved surface 20 on principal reflection panel 30 falls to also dropping in annular inner boundary.Feed 10 and the projection of secondary reflecting curved surface 20 on principal reflection panel 30 drop in the inner boundary of annular, object be in order to ensure the figuration that principal reflection panel 30 is launched after electromagnetic wave do not blocked by any object (such as feed 10, secondary reflecting curved surface 20), thus reach the effect improving reflecting antenna gain.
Different or between feed 10 from principal reflection panel 30 the distance of the size of principal reflection panel 30 is different, will determine the difference of the shape and size of secondary reflecting curved surface 20.The distribution of electromagnetic power density after the figuration that electromagnetic wave obtains after different secondary reflecting curved surface 20 figurations on principal reflection panel 30 is different.The reflecting antenna of this embodiment can improve the effective rate of utilization of principal reflection panel, the electromagnetic power density after figuration can be controlled be uniformly distributed on principal reflection panel, reach and improve reflecting antenna gain, reduce sidelobe level and optimize the effect of phase place adjustment performance.
Alternatively, the principal reflection panel 30 in this embodiment is made up of multiple phasing unit, wherein, has identical phase place by the electromagnetic wave after each phasing unit adjusted in multiple phasing unit controls figuration.The electromagnetic wave sent by principal reflection panel adjustment reflecting antenna has identical phase place, is conducive to strengthening antenna signal strength, improves the efficiency of antenna.
The reflecting antenna of this embodiment comprises feed, secondary reflecting curved surface and principal reflection panel, wherein, secondary reflecting curved surface can be determined according to the size of principal reflection panel and the distance between feed and principal reflection panel, make the electromagnetic power density after by secondary reflecting curved surface figuration on principal reflection panel in annular spread equably, the problem that the utilance of the flat reflective array panel of antenna in prior art is low is solved by the reflecting antenna of this embodiment, and then reach raising antenna gain, reduce sidelobe level and optimize the technique effect of phase place adjustment performance.
According to the utility model embodiment, provide a kind of method for designing of reflecting antenna, it should be noted that, can perform in the computer system of such as one group of computer executable instructions in the step shown in the flow chart of accompanying drawing, and, although show logical order in flow charts, in some cases, can be different from the step shown or described by order execution herein.
Fig. 6 is the flow chart of the method for designing of reflecting antenna according to the utility model embodiment, reflecting antenna in the method is any one the optional or preferred reflecting antenna in the utility model embodiment, as shown in Figure 6, the method for designing of this reflecting antenna comprises the steps:
Step S102, obtains size and first distance of principal reflection panel, and wherein, the first distance is the distance between feed and principal reflection panel.
According to actual design requirement, the size of principal reflection panel and the distance between feed and principal reflection panel can adjust.The size of principal reflection panel comprises shape and the size of principal reflection panel.Principal reflection panel in the method for designing of the reflecting antenna of this embodiment is preferably Meta Materials Reflector Panel, and the shape of this Meta Materials Reflector Panel is preferably rectangle, such as, and the square Meta Materials Reflector Panel of the length of side 1.2 meters.Feed in reflecting antenna is connected with principal reflection panel by link (such as circular waveguide tube), feed is arranged along the axis of principal reflection face plate center, and and principal reflection panel interval arrange, and feed is along the mobilizable setting in link direction, feed is arranged on link direction by this embodiment movably, and then reaches the object of the distance between flexible feed and principal reflection panel.
Step S104, according to size and the secondary reflecting curved surface of the first distance calculating of principal reflection panel, wherein, secondary reflecting curved surface is used for the electromagnetic wave figuration launched feed, principal reflection panel is used for modulating the electromagnetic wave after figuration, makes the electromagnetic wave after modulating have identical phase place.
The size of principal reflection panel and the distance between feed and principal reflection panel are as the data foundation obtaining secondary reflecting curved surface, and the size of different principal reflection panels or the distance between different feeds and principal reflection panel, will determine different secondary reflecting curved surfaces.The method for designing of the reflecting antenna of this embodiment calculates secondary reflecting curved surface according to the size of principal reflection panel and the distance between feed and principal reflection panel, be uniformly distributed on principal reflection panel in order to the electromagnetic power density controlled after secondary reflecting curved surface figuration, and be distributed on whole principal reflection panel as best one can, to realize the effect improving principal reflection panel utilization.
Alternatively, calculate secondary reflecting curved surface according to the size of principal reflection panel and the distance between feed and principal reflection panel to comprise the following steps:
Step S1, according to the size of principal reflection panel and the distance determination incidence angle between feed and principal reflection panel and angle of reflection, as shown in Figure 3, incidence angle is the angle of the axis of electromagnetic incident direction and feed, and angle of reflection is the angle of the axis of electromagnetic reflection direction and feed.
Step S2, sets up the first equation and the second equation respectively according to incidence angle and angle of reflection.Wherein, the first equation is equation corresponding to geometric optics principle of reflection, i.e. tan (θ+ψ)/2=d ρ/(ρ d ρ), wherein, ψ is incidence angle, and θ is angle of reflection, ρ is the footpath, pole under polar coordinate system, and the origin of coordinates of polar coordinate system is the phase center of feed.Second equation is equation corresponding to conservation of energy principle, i.e. KP (θ, φ) dA (θ, φ)=G
f(ψ, θ) dA
f(ψ, θ), wherein, G
f(ψ, θ) is feed directional diagram, the differential bin that P (θ, φ) is reflection direction figure for reflection direction figure, dA (θ, φ), dA
fthe differential bin that (ψ, θ) is feed directional diagram, φ is the polar angle under polar coordinate system, and K is preset constant, tries to achieve according to incident power is equal with reflection power.
Step S3, obtains secondary reflectivity curve by the first equation and the second solving simultaneous equation.The coordinate figure that what the equation corresponding according to geometric optics principle of reflection and solving simultaneous equation corresponding to conservation of energy principle obtained is under one group of polar coordinate system, namely can obtain a curve, i.e. secondary reflectivity curve by connecting this group coordinate figure.
Step S4, obtains secondary reflecting curved surface by revolute reflectivity curve.Secondary reflecting curved surface is being obtained with the secondary reflectivity curve that rotates a circle on the direction of principal reflection panel parallel.
The method for designing of the reflecting antenna of this embodiment is utilized to obtain secondary reflecting curved surface according to the size of principal reflection panel and the distance between feed and principal reflection panel.The electromagnetic wave irradiation that feed in reflecting antenna sends is to secondary reflecting curved surface, by controlling the space coordinates of each point on secondary reflecting curved surface, realize secondary reflecting curved surface and figuration is carried out to electromagnetic wave, the electromagnetic wave after figuration is reflexed on principal reflection panel according to demand direction.In order to improve the efficiency of reflecting antenna, secondary reflecting curved surface in this embodiment carries out figuration by according to following demand to electromagnetic wave: the electromagnetic power density on principal reflection panel after figuration is uniformly distributed, and electromagnetic power density after figuration is as far as possible large is distributed on principal reflection panel, to reach the effect improving principal reflection panel utilization.
Alternatively, distributed ringwise on principal reflection panel by the electromagnetic power density after the secondary reflecting curved surface figuration in the method for designing of the reflecting antenna of this embodiment, and be uniformly distributed in annular region.Wherein, the external boundary of annular is inscribed within the border of principal reflection panel, the projection of feed on principal reflection panel drops in the inner boundary of annular, and the projection of secondary reflecting curved surface on principal reflection panel also drops in the inner boundary of annular, ensure that the electromagnetic wave after the figuration that principal reflection panel is launched is not blocked by any object (such as feed, secondary reflecting curved surface), thus reach the effect improving reflecting antenna gain.
Alternatively, the principal reflection panel in this embodiment is Meta Materials Reflector Panel, and Meta Materials Reflector Panel comprises: medium substrate; Be arranged on multiple conduction geometries on medium substrate one surface; And be arranged on medium substrate with the reflector on relative another surface of conduction geometry, wherein, reflector is metal level.Principal reflection panel is used for modulating the electromagnetic wave after figuration, makes the electromagnetic wave after modulating have identical phase place.Principal reflection panel is made up of multiple phasing unit, and the electromagnetic wave after adjustment modulation has identical phase place and comprises: obtain the phase information that principal reflection panel raises the electromagnetic electric field strength after making; The each phasing unit in multiple phasing unit is adjusted according to phase information; And control each phasing unit reflection modulation after electromagnetic wave there is identical phase place.The electromagnetic wave sent by principal reflection panel adjustment reflecting antenna has identical phase place, is conducive to strengthening antenna signal strength, improves the efficiency of antenna.
Step S106, obtains reflecting antenna by feed, secondary reflecting curved surface and principal reflection panel.
The method for designing of the reflecting antenna of this embodiment obtains secondary reflecting curved surface according to the size of principal reflection panel and the distance between feed and principal reflection panel, this secondary reflecting curved surface can according to demand to electromagnetic wave figuration, makes the electromagnetic power density after figuration on principal reflection panel in annular spread equably.By the control method of the reflecting antenna of the utility model embodiment, solve the problem that the utilance of the flat reflective array panel of antenna in prior art is low, thus reach raising antenna gain and efficiency, reduce sidelobe level and optimize the technique effect of phase-modulation performance.
Above-mentioned the utility model embodiment sequence number, just to describing, does not represent the quality of embodiment.
In above-described embodiment of the present utility model, the description of each embodiment is all emphasized particularly on different fields, in certain embodiment, there is no the part described in detail, can see the associated description of other embodiments.
The above is only preferred implementation of the present utility model; it should be pointed out that for those skilled in the art, under the prerequisite not departing from the utility model principle; can also make some improvements and modifications, these improvements and modifications also should be considered as protection range of the present utility model.
Claims (17)
1. a reflecting antenna, is characterized in that, comprising:
Feed, for emitting electromagnetic wave;
Secondary reflecting curved surface, is positioned at described feed radiation port side, for carrying out figuration to described electromagnetic wave; And
Principal reflection panel, is positioned at the opposite side of described feed radiation port, for modulating the electromagnetic wave after figuration, makes the electromagnetic wave after modulating have identical phase place.
2. reflecting antenna according to claim 1, is characterized in that, described secondary reflecting curved surface is umbrella curved surface.
3. reflecting antenna according to claim 1 and 2, is characterized in that, the middle part of described secondary reflecting curved surface is concave surface and caves in described feed direction.
4. reflecting antenna according to claim 3, is characterized in that, described secondary reflecting curved surface is divided into the subsurface of multiple seamless link each other, and the public connecting portion of multiple subsurface is the middle part of described secondary reflecting curved surface.
5. reflecting antenna according to claim 4, is characterized in that, each described subsurface is concave surface and caves in described feed direction.
6. reflecting antenna according to claim 4, is characterized in that, the cross section of described secondary reflecting curved surface is polygon, and described polygonal each limit is curve and to described polygonal center curvature.
7. reflecting antenna according to claim 4, is characterized in that, the juncture area of adjacent two subsurfaces is convex surface and caves in the direction away from described feed.
8. reflecting antenna according to claim 1, is characterized in that, described principal reflection panel comprises:
Multiple phasing unit, wherein, has identical phase place by the electromagnetic wave after each phasing unit adjusted in described multiple phasing unit controls figuration.
9. reflecting antenna according to claim 1, is characterized in that, described principal reflection panel is Meta Materials Reflector Panel.
10. reflecting antenna according to claim 9, is characterized in that, described Meta Materials Reflector Panel comprises:
Medium substrate;
Be arranged on multiple conduction geometries on medium substrate surface; And
Be arranged on the reflector on another surface relative with described conduction geometry of medium substrate.
11. reflecting antennas according to claim 10, is characterized in that, described reflector is metal level.
12. reflecting antennas according to any one of claim 9-11, it is characterized in that, the shape of described Meta Materials Reflector Panel is rectangle.
13. reflecting antennas according to claim 1, is characterized in that, the point on described secondary reflecting curved surface meets following relation:
Tan θ+ψ)/2=d ρ/ρ d ρ); And
KP(θ,φ)dA(θ,φ)＝G
f(ψ,θ)dA
f(ψ,θ)，
Wherein, K is preset constant, and the point on described secondary reflecting curved surface is the point under polar coordinate system, and ρ is the footpath, pole of the point on described secondary reflecting curved surface, and φ is the polar angle of the point on described secondary reflecting curved surface, and the origin of coordinates of described polar coordinate system is the phase center of described feed,
G
f(ψ, θ) is feed directional diagram, P (θ, φ) for reflection direction figure, dA (θ, φ) be the differential bin of described reflection direction figure, dA
h(ψ, θ) be the differential bin of described feed directional diagram, ψ is incidence angle, θ is angle of reflection, described incidence angle is the angle of the axis of electromagnetic incident direction and described feed, described angle of reflection is the angle of the axis of electromagnetic reflection direction and described feed, and described incidence angle and described angle of reflection are determined by the size of described principal reflection panel and the first distance, and described first distance is the distance between described feed and described principal reflection panel.
14. reflecting antennas according to claim 1, is characterized in that,
Electromagnetic power density on described principal reflection panel after described figuration distributes ringwise,
Wherein, the external boundary of described annular is inscribed within the border of described principal reflection panel, and the projection of described feed on described principal reflection panel drops in the inner boundary of described annular.
15. reflecting antennas according to claim 14, is characterized in that, the electromagnetic power density after described figuration is uniformly distributed in the region of described annular spread.
16. reflecting antennas according to claim 1, is characterized in that, described feed is connected with described principal reflection panel by link.
17. reflecting antennas according to claim 16, is characterized in that, described link is circular waveguide tube or support bar, and described feed is along described circular waveguide tube or support bar axially movable setting.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520546819.8U CN205051004U (en) | 2015-07-24 | 2015-07-24 | Reflecting antenna |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520546819.8U CN205051004U (en) | 2015-07-24 | 2015-07-24 | Reflecting antenna |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205051004U true CN205051004U (en) | 2016-02-24 |
Family
ID=55344549
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520546819.8U Active CN205051004U (en) | 2015-07-24 | 2015-07-24 | Reflecting antenna |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205051004U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107039780A (en) * | 2015-07-24 | 2017-08-11 | 深圳光启高等理工研究院 | Reflecting antenna and its design method |
| CN111211404A (en) * | 2020-03-23 | 2020-05-29 | 成都华芯天微科技有限公司 | Low-profile scannable planar reflective array antenna system with rotating subreflector and scanning method |
-
2015
- 2015-07-24 CN CN201520546819.8U patent/CN205051004U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107039780A (en) * | 2015-07-24 | 2017-08-11 | 深圳光启高等理工研究院 | Reflecting antenna and its design method |
| CN107039780B (en) * | 2015-07-24 | 2023-12-15 | 深圳光启高等理工研究院 | Reflection antenna and design method thereof |
| CN111211404A (en) * | 2020-03-23 | 2020-05-29 | 成都华芯天微科技有限公司 | Low-profile scannable planar reflective array antenna system with rotating subreflector and scanning method |
| CN111211404B (en) * | 2020-03-23 | 2024-05-14 | 成都华芯天微科技有限公司 | Low-profile scannable planar reflective array antenna system with rotary sub-reflecting surface and scanning method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105680162B (en) | Orbital angular momentum multi-beam production method | |
| CN107039780A (en) | Reflecting antenna and its design method | |
| CN102790284B (en) | A kind of antenna assembly and reflecting plate thereof with multiple border | |
| CN106486784A (en) | Mirror antenna array and beam sweeping method | |
| CN107134861A (en) | Emission system, wireless charging system and the signal processing method of wireless charging system | |
| CN103022726A (en) | Full-airspace-covering beamforming phased array antenna (PAA) | |
| CN106685484A (en) | Near field simulator | |
| EP3531508A1 (en) | Reflective array antenna and communication device | |
| CN111987473B (en) | Vortex multi-beam super-surface Cassegrain antenna with reconfigurable polarization | |
| CN205051004U (en) | Reflecting antenna | |
| CN103050782B (en) | Multi-beam plane patch lens antenna | |
| CN109841961A (en) | Multi-beam Bimirror antenna based on super surface | |
| EP3863117A1 (en) | Reflectarray antenna for enhanced wireless communication coverage area | |
| CN110444874A (en) | Millimeter wave directional diagram reconstructable aerial based on graphene | |
| CN109950704A (en) | It is a kind of for close coupling wideband phased array antenna with interior RCS control method | |
| CN110429390A (en) | The four conformal reflector antennas of wave beam rotational field based on super surface | |
| CN205900801U (en) | Utensil moves effect mutually and surface form radiation pattern's disk -type antenna | |
| CN112886284A (en) | Radiation unit directional diagram regulating structure and regulating method | |
| CN108511914A (en) | Coated by dielectric realizes the convergent device and method of wide bandwidth base station antenna wave beam | |
| CN110139287A (en) | A kind of millimeter wave indoor passive covering method | |
| CN109346843A (en) | A kind of space one-dimensional scanning lens antenna and its beam sweeping method based on Parabolic Phase distribution | |
| US10727606B2 (en) | System and method for fine-tuning electromagnetic beams | |
| CN203871465U (en) | Omnidirectional ceiling antenna | |
| CN110783705B (en) | Electromagnetic super-surface unit and corresponding antenna | |
| CN208272144U (en) | Coated by dielectric realizes the convergent device of wide bandwidth base station antenna wave beam |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |