CN107069238A - Polarized rotation blade unit and polarized rotation piece - Google Patents
Polarized rotation blade unit and polarized rotation piece Download PDFInfo
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- CN107069238A CN107069238A CN201611232564.3A CN201611232564A CN107069238A CN 107069238 A CN107069238 A CN 107069238A CN 201611232564 A CN201611232564 A CN 201611232564A CN 107069238 A CN107069238 A CN 107069238A
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- paster
- polarized rotation
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- blade unit
- slab
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Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q21/00—Antenna arrays or systems
- H01Q21/24—Combinations of antenna units polarised in different directions for transmitting or receiving circularly and elliptically polarised waves or waves linearly polarised in any direction
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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
- H01Q3/00—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system
- H01Q3/02—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system using mechanical movement of antenna or antenna system as a whole
- H01Q3/04—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system using mechanical movement of antenna or antenna system as a whole for varying one co-ordinate of the orientation
- H01Q3/06—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system using mechanical movement of antenna or antenna system as a whole for varying one co-ordinate of the orientation over a restricted angle
Abstract
This application discloses a kind of polarized rotation blade unit with high polarization rotation efficiency, polarized rotation blade unit in this programme, including middle dielectric-slab, the metal base plate positioned at dielectric-slab bottom and the metal patch positioned at dielectric-slab top, described metal patch includes two chip units being centrosymmetric integrally connected, each chip unit includes the first paster and the second paster that head and the tail integrally connect from inside to outside, and the first paster and the second paster include straight fragment and intersect to form sagittate two caudas section with straight fragment.The invention also discloses a kind of polarized rotation piece constituted using above-mentioned polarized rotation blade unit, the polarized rotation piece has low RCS decrements characteristic.
Description
Technical field
The present invention relates to communication technical field, the stealthy skill of antenna in Electromagnetic Field and Microwave Technology field is further related to
Art.
Background technology
Stealth technology be it is hidden oneself in order to avoid being found by enemy, strengthen the weight of assault ability and self-protection ability with this
Means are wanted, are indispensable parts in hyundai electronicses informationization, and receive everybody great attention, in modern army
In occupation of vital status in thing.At present, no longer it has been stranded for RCS (RCS) decrement of aircraft in itself
Difficulty, still, carry-on antenna can produce very big RCS, therefore, the thunder of antenna in certain angular field of view
Compel up to scattering section decrement to be solved.The Radar cross-section redu-ction requirement of antenna is real on the basis of antenna performance is unaffected
It is existing, presently mainly reduce the RCS of antenna using polarized rotation piece, this design to polarized rotation piece has
Higher requirement.
These years, the research on polarized rotation piece is more and more, such as makes polarized rotation with split-ring resonator
Reflector plate, above-mentioned polarized rotation reflector plate can 77% bandwidth of operation (77% bandwidth described here is relative bandwidth,
That is (f1-f2)/(2f0), wherein f1It is the upper limiting frequency of bandwidth of operation, f2It is lower frequency limit, f0=(f1+f2Polarization is realized in)/2)
Specific rotation is more than 56%, and when split-ring resonator is connected with a metal disk, the bandwidth of operation of polarized rotation reflector plate then may be used
80% is reached, Unfortunately, their polarized rotation rates in respective whole bandwidth of operation only have 50%, polarized rotation
Rate is relatively low.
The content of the invention
An object of the present invention is to provide a kind of polarized rotation blade unit with high polarization rotation efficiency.
Polarized rotation blade unit in this programme, including middle dielectric-slab, positioned at dielectric-slab bottom metal base plate with
And the metal patch positioned at dielectric-slab top, described metal patch includes two paster lists being centrosymmetric integrally connected
Member, each chip unit includes the first paster and the second paster that head and the tail integrally connect from inside to outside, the first paster and second
Paster includes straight fragment and intersects to form sagittate two caudas section with straight fragment.
Further, the upper surface of the dielectric-slab is square, and the metal patch is diagonal with dielectric-slab upper surface
Line is Axisymmetric Distributed Line, and two caudas section of first paster and the second paster is parallel with two sides of dielectric-slab respectively.
Further, the antenna model thickness based on the antenna structure design to be reduced, the thickness of the dielectric-slab
For 3.6mm, relative dielectric constant is 2.65, and loss tangent angle is 0.001.
Further, the length of side of the dielectric-slab upper surface is 6mm, two caudas section and the dielectric-slab upper table of the second paster
The distance on surface side side is 0.2mm.
Further, the length of two caudas section of second paster is 2mm, the length of two caudas section of the first paster
Spend for 1.8mm, the width of the cauda section of the first paster and the second paster is 0.4mm, and the end of the cauda section of the first paster is arrived
The distance of the symmetrical centre of the metal patch is 1.7mm.
Above-mentioned design, which just can guarantee that, reaches higher polarized rotation rate in the bandwidth of operation of polarized rotation blade unit.
Further, the working frequency of the polarized rotation blade unit is 5.7-17.5GHz, in above-mentioned working frequency
Polarized rotation efficiency is more than 80%.
The technical advantage of the present invention is that the working band of designed polarized rotation blade unit is 5.7-17.5GHz, in work
More than 80% can be reached by making the polarized rotation efficiency in frequency band, and there is polarized rotation blade unit of the invention higher polarization to revolve
Transfer efficient.
It is a further object of the present invention to provide a kind of polarized rotation piece with low radar scattering cross section characteristic, including it is multiple
Polarized rotation piece module, each described polarized rotation piece module is rotated by 90 ° to form the polarization rotation successively along same direction of rotation
Rotor, each polarized rotation piece module is arranged in grid-like polarized rotation blade unit, each polarized rotation piece including ranks
The quantity of polarized rotation blade unit in module is represented by following formula：
N=m2, wherein n be polarized rotation blade unit quantity, m be grid side polarized rotation piece quantity, m be more than etc.
In 1；
Wherein, described polarized rotation blade unit include middle dielectric-slab, positioned at dielectric-slab bottom metal base plate with
And the metal patch positioned at dielectric-slab top, the metal patch in polarized rotation blade unit in each polarized rotation piece module
Towards all same, described metal patch includes two chip units being centrosymmetric integrally connected, each chip unit
Include the first paster and the second paster that head and the tail integrally connect from inside to outside, the first paster and the second paster include straight fragment
Sagittate two caudas section is intersected to form with straight fragment.
Further, the upper surface of the dielectric-slab is square, and the metal patch is diagonal with dielectric-slab upper surface
Line is Axisymmetric Distributed Line, and two caudas section of first paster and the second paster is parallel with two sides of dielectric-slab respectively.
Further, the length of side of the dielectric-slab upper surface is 6mm, two caudas section and the dielectric-slab upper table of the second paster
The distance on surface side side is 0.2mm.
Further, the length of two caudas section of second paster is 2mm, the length of two caudas section of the first paster
Spend for 1.8mm, the width of the cauda section of the first paster and the second paster is 0.4mm, and the end of the cauda section of the first paster is arrived
The distance of the symmetrical centre of the metal patch is 1.7mm.
The present invention technical advantage be：Polarized rotation piece designed by the present invention has low radar scattering cross section characteristic.It is logical
Cross experimental verification to show, the polarized rotation piece that the present invention is designed is applied to around micro-strip paster antenna, micro-strip can ensured
The decrement of significant RCS is realized on the basis of paster antenna radiation characteristic is unaffected, the radar in working band
The decrement of scattering section has been up to 15dB.
Brief description of the drawings
Fig. 1 is the front view of polarized rotation blade unit in the embodiment of the present invention；
Fig. 2 is the top view of polarized rotation blade unit in Fig. 1；
Fig. 3 is the reflectance factor analogous diagram of polarized rotation blade unit in Fig. 2；
Fig. 4 is the polarized rotation rate PCR result figures of polarized rotation blade unit in Fig. 2；
Fig. 5 is x polarization incidence waves and the electric field intensity figure of its back wave；
Fig. 6 is the array junctions composition one of polarized rotation blade unit in Fig. 2；
Fig. 7 is the array junctions composition two of polarized rotation blade unit in Fig. 2；
Fig. 8 is the RCS comparison diagrams of array junctions composition two and reference surface in array junctions composition one, Fig. 7 in Fig. 6；
Fig. 9 is the front view of the micro-strip paster antenna using coaxial feeding in the embodiment of the present invention；
Figure 10 is the top view of the micro-strip paster antenna using coaxial feeding in Fig. 8；
Figure 11 is the micro-strip paster antenna top view that polarized rotation blade unit is sticked in the present invention；
Figure 12 be stick in Figure 11 the micro-strip paster antenna of polarized rotation blade unit and the S11 curve ratios of reference antenna compared with
Figure；
Figure 13 is the increasing of micro-strip paster antenna and reference antenna in xoz faces direction that polarized rotation blade unit is sticked in Figure 11
Beneficial comparison diagram；
Figure 14 is the increasing of micro-strip paster antenna and reference antenna in yoz faces direction that polarized rotation blade unit is sticked in Figure 11
Beneficial comparison diagram；
Figure 15 is that the micro-strip paster antenna and reference antenna that polarized rotation blade unit is sticked in Figure 11 hang down in x direction polarizations ripple
Straight incident mono- static RCS comparison diagram；
Figure 16 is that the micro-strip paster antenna and reference antenna that polarized rotation blade unit is sticked in Figure 11 hang down in y direction polarizations ripple
Straight incident mono- static RCS comparison diagram；
Figure 17 be stick in Figure 11 polarized rotation blade unit micro-strip paster antenna and reference antenna it is oblique by x direction polarization ripples
Mono- static RCS when incident compares figure；
Figure 18 be stick in Figure 11 polarized rotation blade unit micro-strip paster antenna and reference antenna it is oblique by y direction polarization ripples
Mono- static RCS when incident compares figure.
Embodiment
Below by embodiment, the present invention is further detailed explanation：
Reference in Figure of description 1 and accompanying drawing 2：Dielectric-slab 1, metal patch 2, chip unit 21, the first paster
211st, cauda section 2111, straight fragment 2112, metal base plate 3.
The polarized rotation blade unit structure of the present embodiment as depicted in figs. 1 and 2, including middle dielectric-slab, positioned at medium
The metal base plate of plate bottom and the metal patch positioned at dielectric-slab top, what described metal patch integrally connected including two
The chip unit being centrosymmetric, each chip unit includes the first paster that head and the tail integrally connect from inside to outside and the second patch
Piece, the first paster and the second paster include straight fragment and intersect to form sagittate two caudas section with straight fragment.Further
Dielectric-slab in ground, the present embodiment is in rectangular-shape, and the upper surface of the dielectric-slab is square, and the metal patch is to be situated between
The diagonal of scutum upper surface be Axisymmetric Distributed Line, first paster and the second paster two caudas section respectively with dielectric-slab
Two sides are parallel.
Further, the thickness t of the dielectric-slab is 3.6mm, the relative dielectric constant ε of dielectric-slabrFor 2.65, loss is just
Corner cut tan δ are 0.001.The length of side p of the dielectric-slab upper surface is 6mm, two caudas section and the dielectric-slab upper table of the second paster
The distance on surface side side is g0.2mm.The length a of two caudas section of second paster is 2mm, two caudas section of the first paster
Length b be 1.8mm, the width w of the cauda section of the first paster and the second paster is 0.4mm, the cauda section of the first paster
End is 1.7mm apart from dt to the symmetrical centre of the metal patch.
In order to verify the polarized rotation efficiency of above-mentioned polarized rotation blade unit, with ansoft HFSS 13.0 to above-mentioned polarization
Rotation blade unit is emulated.First, define same polarization and cross polarization represents x direction polarizations incidence wave to x directions respectively
Reflectance factor and x direction polarizations incidence wave are represented with Rxx and Rxx respectively to the reflectance factor in y directions.X direction polarizations ripple is allowed to hang down
On the straight polarized rotation blade unit incided designed by the present embodiment, simulation result is as shown in Figure 3.
It can be seen that occur in that three resonant frequency points in curve, be respectively 6GHz, 10.3GHz and
16.58GHz.In these three Frequency points, Rxx is almost 0, and Rxy is almost 1, is illustrated in these three resonance points, x direction polarizations
Incidence wave has almost been completely converted into y direction polarization back waves by irradiating the polarized rotation blade unit described in the present embodiment, i.e.,
The polarised direction of incidence wave have rotated 90 degree by the reflection of polarized rotation blade unit.
In order to which the RCS that polarized rotation blade unit in the present embodiment is expanded on further reduces principle, with first resonant frequency
Exemplified by point (as shown in Figure 3), i.e., when above-mentioned polarized rotation blade unit is operated in 6GHz, as shown in figure 5, when x direction polarization ripples
When (incident electric fields along x directions) Ei vertical irradiations are on polarized rotation blade unit, Ei can be decomposed into is respectively with x-axis angle
E on 45 ° and -135 ° of directionsiuAnd Eiv.Due to electric resonance, above-mentioned polarized rotation blade unit can be regarded as one in v directions
Perfect electric conductor, therefore ErvAnd EivIt is anti-phase.However, due to magnetic resonance, above-mentioned polarized rotation blade unit can in u direction
To be considered as a high impedance surface, then EruAnd EiuIt is same phase.Using Vector modulation, polarization incidence wave has thus been obtained
Impinge perpendicularly on the polarization back wave electric field intensity of polarized rotation blade unit back reflection.According to above-mentioned analysis, when identical x polarization
When incidence wave is respectively radiated on the polarized rotation blade unit of two symmetrical structures, the phase of obtained polarization back wave electric field intensity
Potential difference is 180 °.So, the in opposite direction of two electric fields, numerical value are identical, will cancel out each other, it is achieved thereby that RCS reduces.Erv
And EivIt is the reflected field and incident electric fields in v directions respectively.EruAnd EiuIt is the reflected field and incident electric fields of u direction respectively.
For the efficiency of the polarization conversion that preferably describes the polarized rotation blade unit disclosed in the present embodiment, definition polarization
Specific rotation (polarization conversion ratio, abbreviation PCR) represents the polarization conversion efficiency of polarized rotation piece,
Its specific definition is PCR=| Rxy |2/(|Rxx|2+|Rxy|2).Fig. 4 gives the present embodiment polarized rotation blade unit
The simulation result figure of polarized rotation rate.It can be seen that from 5.7-17.5GHz, polarized rotation rate be held at 80% with
On.And in three resonant frequency points, polarized rotation rate can then reach more than 97%, the polarized rotation piece of the design is thus proved
Unit has higher polarized rotation efficiency.
It is made up of as shown in fig. 7, the present embodiment also discloses one kind polarized rotation blade unit as there is shown in figs. 1 and 2
Polarized rotation piece, including multiple polarized rotation piece modules, the present embodiment is by taking four polarized rotation piece modules as an example, respectively A1
Module, A2 modules, A3 modules and A4 modules, each polarized rotation piece module are rotated by 90 ° to form institute successively along same direction of rotation
Polarized rotation piece is stated, each polarized rotation piece module is arranged in grid-like polarized rotation blade unit, Mei Geji including ranks
The quantity for changing the polarized rotation blade unit in revolving fragment module is represented by following formula：
N=m2, wherein n be polarized rotation blade unit quantity, m be grid side polarized rotation piece quantity, m be more than etc.
In 1；Preferred m is that 4, n is 16 in the present embodiment.
Wherein, described polarized rotation blade unit include middle dielectric-slab, positioned at dielectric-slab bottom metal base plate with
And the metal patch positioned at dielectric-slab top, the metal patch in polarized rotation blade unit in each polarized rotation piece module
Towards all same, described metal patch includes two chip units being centrosymmetric integrally connected, each chip unit
Include the first paster and the second paster that head and the tail integrally connect from inside to outside, the first paster and the second paster include straight fragment
Sagittate two caudas section is intersected to form with straight fragment.
Further, the dielectric-slab of the polarized rotation blade unit in above-mentioned polarized rotation piece is in rectangular-shape, and is given an account of
The upper surface of scutum is square, and the metal patch is using the diagonal of dielectric-slab upper surface as Axisymmetric Distributed Line, first patch
Two caudas section of piece and the second paster is parallel with two sides of dielectric-slab respectively.Further, the thickness t of the dielectric-slab
For 3.6mm, the relative dielectric constant ε of dielectric-slabrFor 2.65, loss tangent angle tan δ are 0.001.The dielectric-slab upper surface
Length of side p is 6mm, and the two caudas section and the distance of dielectric-slab upper surface side of the second paster are g0.2mm.Second paster
The length a of two cauda sections is 2mm, and the length b of two caudas section of the first paster is 1.8mm, the first paster and the second paster
The width w of cauda section be 0.4mm, the distance of the end of the cauda section of the first paster to the symmetrical centre of the metal patch
Dt is 1.7mm.
In order to analyze the Monostatic RCS (Monostatic of the polarized rotation blade unit described in the present embodiment
RCS), from there is provided a kind of polarized rotation of comparative example unlike the polarized rotation piece (be referred to as structure two) described in the present embodiment
Piece, referred to as structure one, as shown in fig. 6, the polarized rotation piece of the comparative example it is different from the polarized rotation piece that the present embodiment is provided it
Place is only that：Each polarized rotation piece module is in the polarized rotation piece for being used to contrast described in ranks arrangement form, i.e. polarized rotation
The direction of metal patch on blade unit is consistent.
The metallic plate for being 48*48mm with a size is tied as reference surface, the mono- static RCS emulation of structure one and structure two
Fruit is as shown in Figure 8.It can be seen that structure two has low RCS characteristics compared to reference surface.However, structure one does not show
The RCS decrement contributions of work.Therefore, the RCS that structure two can be applied to micro-strip paster antenna reduces.
In addition, the present embodiment also discloses a kind of micro-strip paster antenna of coaxial feeding (i.e. claims of the present invention
In microstrip antenna body).According to the design requirement of polarized rotation blade unit as illustrated in figs. 1 and 2, i.e. known media plate
Thickness t is 3.6mm, relative dielectric constant εr=2.65, loss tangent angle tan δ=0.001, as shown in Figure 9 and Figure 10, design
The length L=19mm of the radiation patch of the micro-strip paster antenna gone out, width W=26.5mm, feed position L1=5.5mm, are situated between
The length and width of matter substrate is W1=2*W=53mm, and coaxial line inner core radius is r1=0.6mm, and external diameter is r2=
1.5mm, working frequency f=4.3GHz.In Fig. 9,4 represent reference ground, and 5 represent coaxial feeder.
It is known that using the array arrangement mode of structure two, it is possible to achieve significant RCS decrements.Therefore, described
On the basis of micro-strip paster antenna, by polarized rotation blade unit with the identical mode of structure two (i.e. each polarized rotation piece mould
Block is rotated by 90 ° successively along same direction of rotation) array is attached to around the paster of micro-strip paster antenna, and it is referred to as micro-strip of the present invention and pastes
Chip antenna.
Specific structure as shown in figure 11, sticks four groups of polarized rotation piece moulds around the radiation patch of micro-strip paster antenna
Block, polarized rotation piece module is L-shaped, and every group of polarized rotation piece module includes the polarized rotation blade unit of 12 ranks arrangements,
Each group polarized rotation piece module is arranged along same direction of rotation in 90 degree of rotations, and polarized rotation piece module is located at two of inner side
Side is parallel with two sides of radiation patch respectively.The distance between two neighboring polarized rotation piece module is 4.2mm.This reality
Apply the basic material of medium in example identical with the material of the dielectric-slab of the polarized rotation blade unit.
The RCS reducing techniques of micro-strip paster antenna disclosed in the present embodiment, including herein below：Select a microstrip antenna
Body；The polarized rotation blade unit of multiple structure and parameter all sames is selected, each polarized rotation blade unit includes centre
Dielectric-slab, the metal base plate for sticking dielectric-slab bottom and the metal patch for being pasted on dielectric-slab top, the metal patch of selection
Including two chip units being centrosymmetric integrally connected, each chip unit includes head and the tail from inside to outside and integrally connected
The first paster and the second paster, the first paster and the second paster include straight fragment and intersected to form with straight fragment sagittate
Two cauda sections；
Multiple polarized rotation blade units of above-mentioned selection are divided into multigroup, multigroup polarized rotation piece module, every group of pole is formed
Change the polarized rotation blade unit in revolving fragment module to arrange in ranks, and make the metal patch in each polarized rotation piece module
Direction it is consistent；
Above-mentioned multigroup polarized rotation piece module is sticked around the radiation patch of microstrip antenna body, makes each group polarization rotation
Rotor module is arranged along same direction of rotation in 90 degree of rotations.
RCS decrement principle is as follows in the present embodiment:
Wherein, σ is RCS value, and R is the E from can scatter with a distance from the scattering object of electromagnetic waveiRepresent plane of incidence electromagnetic wave
Electric-field intensity, EsIt is the electric-field intensity of the scattered wave of scattering object transmitting.And polarized rotation blade unit can be by the side of scattered wave
To being rotated by 90 °, so the scattered wave between adjacent polarized revolving fragment module among Figure 10 can be real in the range of certain angle
Now offset, i.e. EsReduce, then RCS value also reduces.
In order to illustrate that there is the micro-strip paster antenna that polarized rotation blade unit is sticked disclosed in the present embodiment significant RCS to subtract
Contracting, special reference antenna (parameter and the micro-strip paster antenna in the present embodiment with not sticking the emulation of the polarized rotation blade unit
Unanimously) contrasted.
Utilize its Reduce shrinkage effect of HFSS simulating, verifyings.The simulation result of S parameter (i.e. reflectance factor) is as shown in figure 12, in figure
It can be seen that, compared with the centre frequency of emulation is 4.3GHz reference antenna, the Antenna Operation is in 4.29GHz.With emulation
Reference antenna centre frequency is compared, and frequency, which becomes, turns to 0.1%, and this is considered as an acceptable value.In addition, producing 10dB resistances
The change of anti-bandwidth is not obvious, therefore, and the polarized rotation blade unit influences negligible to the resonant frequency of micro-strip paster antenna.
The directional diagram of two antennas is contrasted as shown in Figure 13 and Figure 14, from the figure, it can be seen that being pasted around reference antenna
Apply after polarized rotation blade unit, the gain of two antennas has almost no change, this is all in tolerance interval.Therefore, this
It is enough to illustrate, polarized rotation blade unit is to the micro-strip paster antenna disclosed in sticking the present embodiment around micro-strip paster antenna
Gain effects are very little.
In order to prove the feasibility of reduction micro-strip paster antenna RCS methods presented above, reference antenna and the present invention are micro-
Mono- static RCS simulation result with paster antenna is as shown in Figure 15 and Figure 16.From the figure, it can be seen that when x directions and y direction polarizations
When ripple is impinged perpendicularly on micro-strip paster antenna of the present invention respectively, significant RCS decrements are all realized.Especially, when frequency exists
The Reduce shrinkage effect more than 15dB has been reached during 11.5GHz or so.
Although worst RCS directions are when incidence wave vertical irradiation, also necessary analysis is oblique in polarized wave
Situation when incident.Figure 17 and Figure 18 are illustrated when micro-strip paster antenna of the present invention is operated in 11GHz, and incidence angle is asynchronous
RCS.It is concluded that：RCS can only reach decrement in the range of -45 °~45° angle degree.
The present invention devises the efficient polarized rotation blade unit of a comparison first, then by the way that its array is polarization
Revolving fragment module, then the polarized rotation piece module is rotated by 90 ° successively along same direction of rotation, polarized rotation piece is formed, is reached
Low RCS characteristics are arrived.On the basis of designing herein, the micro-strip paster antenna of a use same media substrate is devised again, will
Polarized rotation piece with low RCS characteristics sticks on around the radiation patch of micro-strip paster antenna to reduce Antenna/RCS, is used in combination
HFSS has carried out simulating, verifying.As a result show, the method can ensure that micro-strip paster antenna is impregnable in its radiance
On the basis of realize significant RCS decrement.
Above-described is only that the known general knowledge such as concrete structure and characteristic is not made herein in embodiments of the invention, scheme
Excessive description, technical field that the present invention belongs to is all before one skilled in the art know the applying date or priority date
Ordinary technical knowledge, can know prior arts all in the field, and with using normal experiment hand before the date
The ability of section, one skilled in the art can improve and implement under the enlightenment that the application is provided with reference to self-ability
This programme, some typical known features or known method should not implement the application as one skilled in the art
Obstacle.It should be pointed out that for those skilled in the art, without departing from the structure of the invention, can also make
Go out several modifications and improvements, these should also be considered as protection scope of the present invention, these effects implemented all without the influence present invention
Fruit and practical applicability.The scope of protection required by this application should be based on the content of the claims, the tool in specification
Body embodiment etc. records the content that can be used for explaining claim.
Claims (10)
1. a kind of polarized rotation blade unit, including middle dielectric-slab, the metal base plate positioned at dielectric-slab bottom and positioned at Jie
The metal patch on scutum top, it is characterised in that described metal patch includes two patches being centrosymmetric integrally connected
Blade unit, each chip unit includes the first paster and the second paster that integrally connect of head and the tail from inside to outside, the first paster and
Second paster includes straight fragment and intersects to form sagittate two caudas section with straight fragment.
2. polarized rotation blade unit according to claim 1, it is characterised in that：The upper surface of the dielectric-slab is pros
Shape, the metal patch is using the diagonal of dielectric-slab upper surface as Axisymmetric Distributed Line, two of first paster and the second paster
Cauda section is parallel with two sides of dielectric-slab respectively.
3. polarized rotation blade unit according to claim 1, it is characterised in that：The thickness of the dielectric-slab is 3.6mm, phase
It is 2.65 to dielectric constant, loss tangent angle is 0.001.
4. polarized rotation blade unit according to claim 2, it is characterised in that：The length of side of the dielectric-slab upper surface is
6mm, the two caudas section and the distance of dielectric-slab upper surface side of the second paster are 0.2mm.
5. polarized rotation blade unit according to claim 4, it is characterised in that：Two caudas section of second paster
Length is 2mm, and the length of two caudas section of the first paster is 1.8mm, the width of the cauda section of the first paster and the second paster
It is 0.4mm, the end of the cauda section of the first paster to the distance of the symmetrical centre of the metal patch is 1.7mm.
6. polarized rotation blade unit according to claim 2, it is characterised in that：The work frequency of the polarized rotation blade unit
Rate is 5.7-17.5GHz, and the polarized rotation efficiency in above-mentioned working frequency is more than 80%.
7. a kind of polarized rotation piece, it is characterised in that：Including multiple polarized rotation piece modules, each described polarized rotation piece module
It is rotated by 90 ° to form the polarized rotation piece successively along same direction of rotation, each polarized rotation piece module includes ranks and arranged
Into grid-like polarized rotation blade unit, the quantity of the polarized rotation blade unit in each polarized rotation piece module is by following public affairs
Formula is represented：
N=m2, wherein n is the quantity of polarized rotation blade unit, and m is the polarized rotation piece quantity of grid side, and m is more than or equal to 1；
Wherein, described polarized rotation blade unit includes middle dielectric-slab, the metal base plate positioned at dielectric-slab bottom and position
The direction of the metal patch in polarized rotation blade unit in metal patch in dielectric-slab top, each polarized rotation piece module
All same, described metal patch includes two chip units being centrosymmetric integrally connected, and each chip unit is wrapped
Include the first paster and the second paster that integrally connect of head and the tail from inside to outside, the first paster and the second paster include straight fragment and with
Straight fragment intersects to form sagittate two caudas section.
8. polarized rotation piece according to claim 7, it is characterised in that the upper surface of the dielectric-slab is square, institute
Metal patch is stated using the diagonal of dielectric-slab upper surface as Axisymmetric Distributed Line, two caudas section of first paster and the second paster
It is parallel with two sides of dielectric-slab respectively.
9. polarized rotation piece according to claim 8, it is characterised in that the length of side of the dielectric-slab upper surface is 6mm, the
The two caudas section and the distance of dielectric-slab upper surface side of two pasters are 0.2mm.
10. polarized rotation piece according to claim 9, it is characterised in that the length of two caudas section of second paster
Spend for 2mm, the length of two caudas section of the first paster is 1.8mm, the width of the cauda section of the first paster and the second paster is equal
For 0.4mm, the end of the cauda section of the first paster to the distance of the symmetrical centre of the metal patch is 1.7mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611232564.3A CN107069238A (en) | 2016-12-28 | 2016-12-28 | Polarized rotation blade unit and polarized rotation piece |
Applications Claiming Priority (1)
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109841961A (en) * | 2019-03-24 | 2019-06-04 | 西安电子科技大学 | Multi-beam Bimirror antenna based on super surface |
| CN109980359A (en) * | 2019-03-24 | 2019-07-05 | 西安电子科技大学 | The low RCS antenna in broadband based on polarization conversion surface |
| CN110265780A (en) * | 2019-06-20 | 2019-09-20 | 南京航空航天大学 | A kind of Stealthy reflector Antenna cover of intermediate frequency broadband wave transparent, high and low frequency polarization conversion |
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| CN102176537A (en) * | 2011-01-17 | 2011-09-07 | 西安电子科技大学 | Antenna for reducing radar scattering cross section |
| CN104701613A (en) * | 2015-03-14 | 2015-06-10 | 西安电子科技大学 | Low-RCS (radar cross section) microstrip patch antenna based on polarization conversion |
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| CN102176537A (en) * | 2011-01-17 | 2011-09-07 | 西安电子科技大学 | Antenna for reducing radar scattering cross section |
| CN104701613A (en) * | 2015-03-14 | 2015-06-10 | 西安电子科技大学 | Low-RCS (radar cross section) microstrip patch antenna based on polarization conversion |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109841961A (en) * | 2019-03-24 | 2019-06-04 | 西安电子科技大学 | Multi-beam Bimirror antenna based on super surface |
| CN109980359A (en) * | 2019-03-24 | 2019-07-05 | 西安电子科技大学 | The low RCS antenna in broadband based on polarization conversion surface |
| CN109841961B (en) * | 2019-03-24 | 2020-06-05 | 西安电子科技大学 | Multi-beam double-mirror antenna based on super surface |
| CN109980359B (en) * | 2019-03-24 | 2024-04-16 | 西安电子科技大学 | Broadband low-RCS antenna based on polarization conversion surface |
| CN110265780A (en) * | 2019-06-20 | 2019-09-20 | 南京航空航天大学 | A kind of Stealthy reflector Antenna cover of intermediate frequency broadband wave transparent, high and low frequency polarization conversion |
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