CN108682968A - A kind of super clip surface corner reflection surface antenna of the low RCS of three wave beam of single feed - Google Patents
A kind of super clip surface corner reflection surface antenna of the low RCS of three wave beam of single feed Download PDFInfo
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- CN108682968A CN108682968A CN201810476109.0A CN201810476109A CN108682968A CN 108682968 A CN108682968 A CN 108682968A CN 201810476109 A CN201810476109 A CN 201810476109A CN 108682968 A CN108682968 A CN 108682968A
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q19/00—Combinations of primary active antenna elements and units with secondary devices, e.g. with quasi-optical devices, for giving the antenna a desired directional characteristic
- H01Q19/10—Combinations of primary active antenna elements and units with secondary devices, e.g. with quasi-optical devices, for giving the antenna a desired directional characteristic using reflecting surfaces
- H01Q19/106—Combinations of primary active antenna elements and units with secondary devices, e.g. with quasi-optical devices, for giving the antenna a desired directional characteristic using reflecting surfaces using two or more intersecting plane surfaces, e.g. corner reflector antennas
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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
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q15/00—Devices for reflection, refraction, diffraction or polarisation of waves radiated from an antenna, e.g. quasi-optical devices
- H01Q15/0006—Devices acting selectively as reflecting surface, as diffracting or as refracting device, e.g. frequency filtering or angular spatial filtering devices
- H01Q15/0013—Devices acting selectively as reflecting surface, as diffracting or as refracting device, e.g. frequency filtering or angular spatial filtering devices said selective devices working as frequency-selective reflecting surfaces, e.g. FSS, dichroic plates, surfaces being partly transmissive and reflective
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Abstract
The present invention proposes the super clip surface corner reflection surface antenna of the low RCS of three wave beam of single feed a kind of,The multi-beam characteristic of beam position Independent adjustable is realized by loading super surface,Effectively weaken antenna scattering intensity simultaneously,Including by first medium plate,The three face angle structures that second medium plate and third dielectric-slab are spliced,The lateral surface of three blocks of dielectric-slabs is printed with three pieces of metallic plates respectively,The medial surface of three blocks of dielectric-slabs is respectively printed with the symmetric metal ring structure of periodic arrangement,Symmetric metal ring structure is for realizing three beam features and reduces the RCS of antenna,It is provided with spherical wave feed on the outside of three faces angle structure bore face,And the supporting rod by being connect with three vertex on three face angle structure bore faces is fixed,The dimensional parameters of each becket by its position coordinate value,The coordinate value of spherical wave feed and the incident angle of incident electromagnetic wave determine.The present invention has beam position Independent adjustable and low RCS characteristics, can be used for wireless communication field.
Description
Technical field
The invention belongs to antenna technical fields, are related to a kind of multi-beam reflection surface antenna, and in particular to a kind of list feed three
The super clip surface corner reflection surface antenna of the low RCS of wave beam, can be used for wireless communication field.
Technical background
Multi-beam antenna technology can cover extensive transmission region with high-gain, in satellite communication, radar-reconnaissance, electronics
The demand in the fields such as confrontation constantly expands, and becomes next-generation satellite antenna, multi-target tracking radar and universe electronic countermeasure system
The important development direction of system.Multibeam antenna is divided into three classes according to the unusual of Wave beam forming principle, i.e. planar phased array day
Line, reflector antenna and lens antenna；Difference according to feed and reflecting surface form can be divided into single feed multibeam antenna, more feedbacks
Source multibeam antenna.Wherein Planar Phased Array Antenna is typical more feed multibeam antennas, and lens antenna is generally using single feedback
Source multi-beam mechanism.The phased array antenna high compared to cost and the serious lens antenna of dielectric loss, reflector antenna because
To have the advantages such as of simple structure and low cost, in being most widely used for multibeam antenna field.Reflector antenna exists simultaneously
More flexible in Multibeam synthesis mechanism, common antenna form has single feed single port diametric plane multibeam antenna, single more mouthfuls of feed
Diametric plane multibeam antenna, more feed single port diametric plane multibeam antennas, the more bore face multibeam antennas of more feeds.Wherein, single feed
Single port diametric plane multibeam antenna has higher research and application value due to having structure type the simplest.
Angle reflecting surface is due to its special three-dimensional planar structure, in terms of the single feed single port diametric plane multibeam antenna of structure
With natural advantage.However since specific radiation focus point, the radiated wave sent out from feed antenna is not present in angle reflecting surface
Beam can not achieve good calibration, and the promotion of gain is extremely limited.On the other hand, the angle design of reflecting surface can also cause strong
Back scattering.2016, Authorization Notice No. was CN 104103910B, a kind of entitled " optimization of single port diameter multibeam antenna
The patent application of design method " discloses a kind of single port diametric plane multi-beam reflection surface antenna, is set by the figuration to reflecting surface
Meter, effectively improves the gain of antenna, however its multi-beam performance is realized by the form of feed array, and more feeds are belonged to
Single port diametric plane multibeam antenna type, antenna structure is complex, and can not effectively weaken the scattering properties of itself.
When building single feed single port diametric plane multibeam antenna using angle reflecting surface, it is necessary to not destroy reflecting surface fundamental form
Under the premise of formula, performance improvement is carried out to antenna reflective face, while should try to drop in the case where not influencing antenna radiation performance
The intrinsic strong scattering characteristic of low angle reflecting surface.
Invention content
It is an object of the invention in view of the deficiency of the prior art, propose a kind of low RCS of three wave beam of single feed
Super clip surface corner reflection surface antenna, by printing super surface cell on three Reflector Panels, from the electricity of each reflective surface
Magnetic wave beam position can be independently determined, and realize the three beam-formings radiation of arbitrary beam position, while reduce antenna
RCS。
To achieve the above object, the technical solution that the present invention takes is：
A kind of super clip surface corner reflection surface antenna of the low RCS of three wave beam of single feed, including be situated between by first medium plate 1, second
The three face angle structures that scutum 2 and third dielectric-slab 3 are spliced, the lateral surface of the first medium plate 1 are printed with the first gold medal
Belong to bottom plate 4, the lateral surface of the second medium plate 2 is printed with the second metal base plate 5, the lateral surface print of the third dielectric-slab 3
Be formed with third metal base plate 6, be provided with spherical wave feed 7 on the outside of the three faces angle structure bore face, and by with three faces
The supporting rod 8 of three vertex connection on angle structure bore face is fixed；It is respectively printed on the medial surface of three blocks of dielectric-slabs
The face battle array structure being made of the symmetric metal ring structure 9 of multiple periodic arrangements, for realizing three beam features and reduces antenna
RCS, the size of the symmetric metal ring structure 9 is coordinate value by its position, 7 position of spherical wave feed
Coordinate value and incident electromagnetic wave incident angle determine.
The super clip surface corner reflection surface antenna of the low RCS of three wave beam of above-mentioned single feed a kind of, the three faces angle structure, wherein
First medium plate 1, second medium plate 2 it is identical with the structure of third dielectric-slab 3, plate face shape is isosceles right triangle,
And it is vertical two-by-two.
The super clip surface corner reflection surface antenna of the low RCS of three wave beam of above-mentioned single feed a kind of, the symmetric metal ring structure 9,
Using a length of w in outside1, a length of w of inner edge2Square-shaped metal ring structure, pass through and adjust outer length of side w1With interior length of side w2Size,
Realize phase compensation of the becket to incidence wave, phase compensation valueCalculation formula be：
Wherein, k0For wave number in free space, riFor spherical wave feed phase center away from i-th of symmetric metal ring element
The distance at center；(ui,vi) it is the position coordinates of i-th symmetric metal ring structure center in uov planes, for first medium plate,
Uov planes are xoy planes, and for second medium plate, uov planes are yoz planes, and for third dielectric-slab, uov planes are zox
Plane；For the plane wave beam direction being emitted from jth dielectric-slab medial surface, and be emitted from three dielectric-slab medial surfaces
Beam direction is identical or different.
The super clip surface corner reflection surface antenna of the low RCS of three wave beam of above-mentioned single feed a kind of, the spherical wave feed 7 use
Rectangle standard waveguide structure, phase center are located at waveguide bore face center, when installation, the phase of the spherical wave feed 7
Center is located on the vertex to the extended line of bore face central point line of three face angle structures.
The super clip surface corner reflection surface antenna of the low RCS of three wave beam of above-mentioned single feed a kind of, the spherical wave feed 7, phase
To the distance in three face angle structure bore faces, determining principle is at position center：First, the spherical surface electricity that the spherical wave feed 7 radiates
Magnetic wave answers full illumination to enter in three face angle reflecting surface bore faces；Second is that the spherical electromagnetic wave that the spherical wave feed 7 radiates,
The irradiated area on each Reflector Panel surface is maximum.
Compared with prior art, the present invention haing the following advantages：
1, the present invention is made each by independently designing the super surface cell structure for loading on three mirror surfaces
Incident spherical wave from feed is calibrated to the high directional plane reflected beam being independently emitted by reflecting surface respectively, with the prior art
It compares, realizes the multi-beam performance based on single feed single port diametric plane and the arbitrary Independent adjustable of single beam position, improve more
The applicability of beam antenna.
2, the present invention changes the anti-of conventional three face angle slotted-type reflector surface plate surfaces by way of loading super surface cell
Phase characteristic is penetrated, under the premise of ensureing that antenna gain effectively improves, significantly reduce dissipating for antenna in broadband range
Penetrate characteristic.
3, the present invention only need to load one layer of super surface in the mirror surface of angle reflector antenna, can realize three wave beams
Radiation characteristic, without changing feed form and reflector shape, compared with prior art, the overall structure of antenna is simpler.
Description of the drawings
Fig. 1 is the overall structure diagram of the embodiment of the present invention；
Fig. 2 is the super surface cell structural schematic diagram of the embodiment of the present invention；
Fig. 3 is the reflected phase distribution map in 1 mirror surface region of the embodiment of the present invention；
Fig. 4 is the three-dimensional gain effect figure of the embodiment of the present invention 1；
Fig. 5 is the three-dimensional gain effect figure of the embodiment of the present invention 2；
Fig. 6 is the three-dimensional gain effect figure of the embodiment of the present invention 3；
Fig. 7 is the two dimensional gain curve graph of the embodiment of the present invention 1 and embodiment 3；
Fig. 8 is the three-dimensional RCS design sketch for the three face angle reflector antennas for not loading super surface；
Fig. 9 is the three-dimensional RCS design sketch of the embodiment of the present invention 1；
Figure 10 is RCS contrast curve of the embodiment of the present invention 1 in Ku wave bands before and after the super surface of load.
Specific implementation mode
Below in conjunction with drawings and examples, invention is further described in detail.
Embodiment 1, the beam direction that the present embodiment is emitted from three dielectric-slab medial surfaces are identical.
Referring to Fig.1, the present invention include first medium plate 1, second medium plate 2, third dielectric-slab 3, the first metal base plate 4,
Second metal base plate 5, third metal base plate 6, spherical wave feed 7, supporting rod 8 and symmetric metal ring structure 9.
The first medium plate 1, second medium plate 2, third dielectric-slab 3 plate face shape be isosceles right triangle, and
It is identical as the first metal base plate 4, the second metal base plate 5, the plate face shape of third metal base plate 6 respectively, three pieces of dielectric-slab splicings
It is vertical into a three face angle structures, and two-by-two.
First metal base plate 4, the second metal base plate 5, third metal base plate 6 are all made of metallic copper material, in order to improve this
The structural strength of invention, thickness 0.5mm；First medium plate 1, second medium plate 2, third dielectric-slab 3 are all made of FR4 materials,
Thickness is 1mm, and upper surface is printed with the symmetric metal ring structure 9 of M × (1+M)/2 periodic arrangement, cycle length of arranging
For a；The a length of a of waist × (1+M) in the isosceles right-angled triangle plate face, bottom edge is a length of
Theoretically as M >=55, i.e. the electric size of the angle reflecting surface length of side reaches 10 λ or more, and super surface is for wave beam
Regulating effect is best, and the length of side of isosceles right triangle metal base plate is more than 300mm at this time；In view of by Computer Simulation item
Part limits, and the embodiment of the present invention only takes M=25, i.e. the electric size of the angle reflecting surface length of side is only 5 λ, at this time corresponding first gold medal
Belong to bottom plate 4, the second metal base plate 5, third metal base plate 6 the length of side be 98.8mm.
The spherical wave feed 7, using WR62 rectangle standard waveguide structures, the phase center of the spherical wave feed 7 is located at
Waveguide bore face center, when installation, the phase center of the spherical wave feed 7 be located at from three face angles reflect vertexs of surface to
On the extended line of three face angle reflecting surface bore face central point connecting lines；The phase center position of the spherical wave feed 7 of the present embodiment
It is 65mm to set at a distance from three face angle reflection vertexs of surface.The spherical wave feed 7 by with three face angle reflecting surface bore faces
Three vertex connection three supporting rods 8 fix.
The spherical wave feed 7, for phase center at a distance from three face angle reflecting surface unit bore faces, what is determined is main
Principle is：First, allowing the spherical wave that spherical wave feed 7 radiates to cover region as much as possible, so that more super surface cell ginsengs
With to regulation and control beam phase during, this is conducive to the improvement of radiation beam directionality；Second is that the position of spherical wave feed 7,
Three face angles should not should not be exposed outside by the spherical electromagnetic wave of its radiation too far away from the bore face of three face angle reflecting surface units
The bore face edge of reflecting surface unit；Third, the spherical electromagnetic wave that the spherical wave feed 7 radiates, is incident in each Reflector Panel
Incidence angle should be as small as possible, and incidence angle is bigger, and the precision that super surface regulates and controls beam phase is lower, and error is bigger.
The symmetric metal ring structure 9, as shown in Fig. 2, using a length of w in outside1, a length of w of inner edge2Square-shaped metal ring
Structure, using copper product, thickness 0.017mm, the cycle length a=3.8mm to arrange at equal intervals；By adjusting outer length of side w1
With interior length of side w2Size and electromagnetic wave incident angle, can obtain under incidence angles degree, through different sizes
Symmetric metal ring structure 9 reflect after back wave phase distribution；Then combine each symmetric metal ring being calculated by formula
The phase compensation numerical value of 9 position of structure, you can determine the outer length of side w of each symmetric metal ring structure 91With interior length of side w2
Accurate dimension, to realize phase compensation of the becket to incidence wave in structure.
The symmetric metal ring structure 9 carries out the regulation and control of phase on two dimensions, provides incidence wave
Phase compensation valueIt is the coordinate value and the symmetric metal ring structure 9 by 9 position of symmetric metal ring structure
What the corresponding 7 position coordinate value of spherical wave feed of three face angle reflecting surface units at place determined.
Assuming that reflecting surface is the square-shaped planar being located in xoy planes, using the geometric center of entire reflecting surface as coordinate
The incidence wave of origin, spherical wave feed 7 is incident downwards along z-axis negative direction, and the greatest irradiation direction of feed is directed at the several of reflecting surface
What center.Assuming that i-th of 9 center of symmetric metal ring structure is (x in the position coordinates of xoy planesi,yi), then phase compensation value
Calculation formula be：
Wherein, k0For wave number in free space, riFor spherical wave feed 7 phase center away from i-th of symmetric metal ring element
The distance at center；For plane wave exit direction, θjWithThe respectively angle of plane wave exit direction and z-axis and x-axis.
Further, the k in formula0riExpression converts perpendicular to symmetric metal ring element table the spherical wave from spherical wave feed 7 to
The phase number compensated required for the plane wave of face outgoing；Second partIt indicates to be formed and give
It is fixedThe phase being further compensate for required for plane wave on direction.Work as j=1, when 2,3,It is indicated respectively from
The beam direction of one dielectric-slab 1, second medium plate 2 and the outgoing of 3 medial surface of third dielectric-slab,
The radiation direction of three wave beams of the present invention is respectively by being printed on first medium plate 1, second medium plate 2 and third
The symmetric metal ring structure 9 of 3 upper surface of dielectric-slab is individually determined, and beam radiation direction is inclined with respective reflection facial plane in 15 °
Oblique angle, i.e.,The reflected phase numeric distribution of three mirror surfaces is with reference to Fig. 3 institutes
Show, the data in dotted line frame are valid data, and the variation of color represents the difference of reflected phase, are built according to phase number distribution
Found super surface cell array.
The three face angle structure of right angle that the present invention mentions has strong backward radar scattering characteristic, is commonly applied to radar
Calibration and maritime search and rescue.In the present invention, the load on super surface is so that the phase distribution on metal mirror surface is disturbed, to make
It must be incident to the plane electromagnetic wave of three face angle structure medial surfaces, cannot be returned along original route, but to all directions incoherent scattering,
To significantly reduce the RCS of three face angle structure of right angle.
Embodiment 2, the beam direction that the present embodiment is emitted from three dielectric-slab medial surfaces are different.
The structure of the present embodiment is identical with embodiment 1, differs only in the symmetric metal of three dielectric-slab medial surfaces
The size of ring structure 9 is different, so that the beam direction being emitted from three pieces of dielectric-slab medial surfaces is different, respectively
Embodiment 3, the beam direction that the present embodiment is emitted from three dielectric-slab medial surfaces are identical.
In the present embodiment, first medium plate 1, second medium plate 2, third dielectric-slab 3, the first metal base plate 4, the second metal
The radiation side of bottom plate 5, the shape of third metal base plate 6 and quantity, the model of spherical wave feed 7 and quantity and three wave beams
ToIt is same as Example 1.
By one times of the antenna reflective face dimension enlargement of embodiment 1, the upper surface of three blocks of dielectric-slabs is printed with the present embodiment
The symmetric metal ring structure 9 of the periodic arrangement of 50 × (1+50)/2=1275, arrangement cycle length a are constant；The isosceles are straight
Waist a length of 3.8 × (1+50)=193.8mm of angle triangle plate face, electric size is close to reach 10 λ, a length of 274.1mm in bottom edge.
The phase center of spherical wave feed 7, which is similarly positioned in from three face angles, reflects vertex of surface to three face angle reflecting surface bores
On the extended line of face central point connecting line, and it is 142mm at a distance from three face angle reflection vertexs of surface.
Since antenna opening diametric plane expands, theoretically the antenna gain of embodiment 3 and beam-forming characteristic should be significantly better than
Embodiment 1.
Below by way of emulation experiment, the technique effect of the present invention is described further.
1, simulated conditions and content.
Below based on the emulation experiment that the embodiment of the present invention is carried out, Ansoft HFSS full-wave simulation softwares is utilized to complete.
Emulation 1, emulates three-dimensional radiation gain of the embodiment of the present invention 1 under 15GHz frequencies, simulation result is such as
Shown in Fig. 4.
Emulation 2, emulates three-dimensional radiation gain of the embodiment of the present invention 2 under 15GHz frequencies, simulation result is such as
Shown in Fig. 5.
Emulation 3, emulates three-dimensional radiation gain of the embodiment of the present invention 3 under 15GHz frequencies, simulation result is such as
Shown in Fig. 6.
Emulation 4, the two-dimensional radiation gain curve of the difference embodiment of the present invention 1 and the embodiment of the present invention 3 under 15GHz frequencies
It is emulated, is takenPlane, simulation result are as shown in Figure 7.
Emulation 5, is emulated to not loading the three-dimensional RCS of three face angle reflector antennas on super surface, takes work frequency
Rate is the plane wave incidence of 15GHz, and incident direction is θ=45 °,Simulation result is as shown in Figure 8.
Emulation 6, emulates the three-dimensional RCS of the embodiment of the present invention 1, and it is that the plane wave of 15GHz enters to take working frequency
It penetrates, incident direction is θ=45 °,Simulation result is as shown in Figure 9.
Emulation 7, RCS of the difference embodiment of the present invention 1 in the Ku wave bands (12GHz~18GHz) before and after loading super surface
Numerical curve is emulated, and it is θ=45 ° to take incident plane wave direction,Frequency interval takes 1GHz, and simulation result is such as
Shown in Figure 10.
2, analysis of simulation result.
With reference to Fig. 4, the embodiment of the present invention 1 forms the apparent wave beam of three beams, and beam radiation direction and reason in space
It is consistent by design result,Gain has obtained effective control in the other direction simultaneously
It makes, the maximum gain on aerial radiation direction has reached 13.9dBi.
With reference to Fig. 5, the embodiment of the present invention 2 forms the significant wave beam of three beams, compared with Example 1, three in space
The beam position of wave beam is simultaneously asymmetric, respectively
This result is that meet, has also absolutely proved that three beam features of the present invention are independently to be adjusted by three pieces of Reflector Panels with Theoretical Design
What control was realized, and by the load on super surface, the collimated beam of sound reflected from three panel surfaces can be directed toward three each not phases
Same direction.
With reference to Fig. 6, the embodiment of the present invention 3 equally existsDirection on form
The apparent pencil beam of three beams, compared to embodiment 1, due to one times of antenna reflective face larger, the main lobe gain of antenna
Significantly improve, maximum gain has reached 18.0dBi, and beam angle obviously narrows, directionality more preferably, beam radiation direction with implement
The simulation result of example 1 is consistent.Simultaneously because the expansion of antenna opening diametric plane, feed occlusion effect weakens so that secondary lobe gain is
Decline.
It is the beam alignmetn characteristic of the super surface texture of further contrast verification, respectively to the embodiment of the present invention 1 with reference to Fig. 7
It is emulated, is taken with two-dimensional radiation gain curve of the embodiment 3 under 15GHz frequenciesPlane is used as emulation plane,
Observe the beam gain effect on one of direction.Behind the super surface of load, two embodiments form in θ=15 ° direction
The beam position of maximum gain, it is consistent with Theoretical Design result, while the secondary lobe gain in other directions is effectively suppressed, no matter
From the angle contrast of directionality or gain characteristic, the simulated effect of embodiment 3 is significantly better than embodiment 1.
With reference to Fig. 8, for the embodiment of the present invention 1 when not loading super surface texture, reflecting surface structure is 90 ° of a standard
Corner reflector, thus incidence wave most energy after reflective surface are returned along original route, from three-dimensional RCS design sketch,
It can be seen that on the direction opposite with incident direction, forms and significantly scatter strong point, RCS numerical value highests, namely it is backward
Scattering is most strong.
With reference to Fig. 9, the embodiment of the present invention 1 is due to being loaded with super surface texture so that the reflected phase hair on Reflector Panel
Raw to change, for incident plane wave, the mutation of these phases shows as typical randomness, it is thus possible to by backward energy
Disorderly to scattering everywhere, so that back scattering numerical value is greatly lowered, it is strong without apparent scatter echo on design sketch
Point.
Referring to Fig.1 0, the Broadband RCS reduced character of the embodiment of the present invention 1 is investigated, is with Ku wave bands (12GHz~18GHz)
Example carries out emulation experiment, and it is θ=45 ° to take incident plane wave direction,Frequency interval 1GHz.Day when not loading super surface
The backward RCS numerical value of line is up at 18GHz in -2.0dBsm~3.5dBsm, the minimum -2.0dBsm at 14GHz
3.1dBsm；Behind the super surface of load, the backward RCS numerical value of antenna is greatly reduced, the minimum -21.7dBsm at 15GHz, than not
Decline about 23.5dBsm when loading super surface；Being up to -3.5dBsm in 18GHz, declining about when than not loading super surface
6.7dBsm.In entire Ku wavelength bands, the backward RCS numeric ratios of three beam antenna of list feed are put down when not loading super surface
Reduce about 13.8dBsm, illustrate super surface is loaded with significant Broadband RCS reduced character.
Above description is only the preferred embodiment of the present invention, is not limited the invention, for the general of this field
For logical technical staff, the several modifications and improvements that can be made under the premise of not departing from innovation thinking of the present invention, but this
A little change all belongs to the scope of protection of the present invention.
Claims (5)
1. the super clip surface corner reflection surface antenna of the low RCS of three wave beam of single feed a kind of, it is characterised in that：Including by first medium plate
(1), the three face angle structures that second medium plate (2) and third dielectric-slab (3) are spliced, the first medium plate (1) it is outer
Side is printed with the first metal base plate (4), and the lateral surface of the second medium plate (2) is printed with the second metal base plate (5), described
The lateral surface of third dielectric-slab (3) is printed with third metal base plate (6), is provided on the outside of the three faces angle structure bore face
Spherical wave feed (7), and the supporting rod (8) by being connect with three vertex on three face angle structure bore faces is fixed；It is described
The face battle array knot being made of the symmetric metal ring structure (9) of multiple periodic arrangements is respectively printed on the medial surface of three blocks of dielectric-slabs
Structure for realizing three beam features and reduces the RCS of antenna, and the size of the symmetric metal ring structure (9) is by where it
What the incident angle of the coordinate value of position, the coordinate value of spherical wave feed (7) position and incident electromagnetic wave determined.
2. the super clip surface corner reflection surface antenna of the low RCS of three wave beam of single feed according to claim 1 a kind of, feature exist
In, the three faces angle structure, first medium plate (1) therein, second medium plate (2) and third dielectric-slab (3) structure phase
Together, plate face shape is isosceles right triangle, and vertical two-by-two.
3. the super clip surface corner reflection surface antenna of the low RCS of three wave beam of single feed according to claim 2 a kind of, feature exist
In the symmetric metal ring structure (9), using a length of w in outside1, a length of w of inner edge2Square-shaped metal ring structure, pass through adjusting
Outer length of side w1With interior length of side w2Size, realize compensation to incident wave phase, phase compensation valueCalculation formula be：
Wherein, k0For wave number in free space, riFor spherical wave feed phase center away from i-th of symmetric metal ring element center
Distance；(ui,vi) it is position coordinates of i-th of symmetric metal ring structure center in uov planes, for first medium plate, uov
Plane is xoy planes, and for second medium plate, uov planes are yoz planes, and for third dielectric-slab, uov planes are flat for zox
Face；For the plane wave beam direction being emitted from jth dielectric-slab medial surface, and the wave being emitted from three dielectric-slab medial surfaces
Shu Fangxiang is identical or different.
4. the super clip surface corner reflection surface antenna of the low RCS of three wave beam of single feed according to claim 1 a kind of, feature exist
In the spherical wave feed (7), using rectangle standard waveguide structure, phase center is located at waveguide bore face center, peace
When dress, the phase center of the spherical wave feed (7) is located at the vertex of three face angle structures to the extension of bore face central point line
On line.
5. the super clip surface corner reflection surface antenna of the low RCS of three wave beam of single feed according to claim 4 a kind of, feature exist
In, the spherical wave feed (7), the distance of phase center to three face angle structure bore faces, determining principle is：When institute
The spherical electromagnetic wave for stating spherical wave feed (7) radiation answers full illumination to enter in three face angle reflecting surface bore faces；Second is that the ball
The spherical electromagnetic wave of surface wave feed (7) radiation, the irradiated area on each Reflector Panel surface are maximum.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201810476109.0A CN108682968B (en) | 2018-05-17 | 2018-05-17 | Single-feed three-beam low-RCS super-surface included angle reflector antenna |
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| CN201810476109.0A CN108682968B (en) | 2018-05-17 | 2018-05-17 | Single-feed three-beam low-RCS super-surface included angle reflector antenna |
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| CN108682968B CN108682968B (en) | 2020-08-04 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113839211A (en) * | 2021-08-30 | 2021-12-24 | 电子科技大学 | Cassegrain monopulse antenna based on planar array structure |
| CN115036703A (en) * | 2022-06-14 | 2022-09-09 | 电子科技大学 | RCS reduction dihedral angle structure based on phase cancellation and design method thereof |
| CN116243285A (en) * | 2023-03-03 | 2023-06-09 | 江苏科技大学 | Multi-angle reflector with adjustable acoustic super surface |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| US4843396A (en) * | 1984-11-21 | 1989-06-27 | Canadian Patents And Development Limited/Societe Canadienne Des Brevets Et D'expolitation Limitee | Trihedral radar reflector |
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| US4843396A (en) * | 1984-11-21 | 1989-06-27 | Canadian Patents And Development Limited/Societe Canadienne Des Brevets Et D'expolitation Limitee | Trihedral radar reflector |
| CN102646871A (en) * | 2012-04-27 | 2012-08-22 | 深圳光启创新技术有限公司 | Multiaerial system |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113839211A (en) * | 2021-08-30 | 2021-12-24 | 电子科技大学 | Cassegrain monopulse antenna based on planar array structure |
| CN115036703A (en) * | 2022-06-14 | 2022-09-09 | 电子科技大学 | RCS reduction dihedral angle structure based on phase cancellation and design method thereof |
| CN115036703B (en) * | 2022-06-14 | 2023-08-25 | 电子科技大学 | RCS shrinkage dihedral angle structure based on phase cancellation and design method thereof |
| CN116243285A (en) * | 2023-03-03 | 2023-06-09 | 江苏科技大学 | Multi-angle reflector with adjustable acoustic super surface |
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| CN108682968B (en) | 2020-08-04 |
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