CN108258434A - Ultralow section lens antenna based on ray-tracing principles and metamaterial structure - Google Patents
Ultralow section lens antenna based on ray-tracing principles and metamaterial structure Download PDFInfo
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- CN108258434A CN108258434A CN201611232706.6A CN201611232706A CN108258434A CN 108258434 A CN108258434 A CN 108258434A CN 201611232706 A CN201611232706 A CN 201611232706A CN 108258434 A CN108258434 A CN 108258434A
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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
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/50—Structural association of antennas with earthing switches, lead-in devices or lightning protectors
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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
- H01Q15/0086—Devices acting selectively as reflecting surface, as diffracting or as refracting device, e.g. frequency filtering or angular spatial filtering devices said selective devices having materials with a synthesized negative refractive index, e.g. metamaterials or left-handed materials
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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
- H01Q15/14—Reflecting surfaces; Equivalent structures
- H01Q15/22—Reflecting surfaces; Equivalent structures functioning also as polarisation filter
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Abstract
The present invention provides a kind of ultralow section lens antenna based on ray-tracing principles and metamaterial structure, including Feed Horn, twist-reflector reflecting plate, single polarization transmission array and supporting rack.Feed Horn is set to the upper surface center of twist-reflector reflecting plate, and single polarization transmission array is set to above twist-reflector reflecting plate, and supporting rack is fixedly connected respectively with Feed Horn, twist-reflector reflecting plate, single polarization transmission array；Circular array of several twist-reflector artificial magnetic conductor units are set on twist-reflector reflecting plate, circular array of several single polarization transmission array units are set in single polarization transmission array, and the area of the circular array of twist-reflector artificial magnetic conductor unit composition is less than the circular array that single polarization transmission array unit forms and two circular projections are concentric.
Description
Technical field
The present invention relates to a kind of lens antennas, particularly a kind of to be cutd open based on ray-tracing principles and the ultralow of metamaterial structure
Face lens antenna.
Background technology
In recent years, planar lens antenna was one of hot spot of microwave and millimeter wave area research.Utilize its unique space
Feed, feed is unobstructed and the characteristics such as planar array, can effectively improve the performance of antenna, reduces processing cost.
Planar lens antenna is introduced into the characteristic that its space electricity-feeding is applied in the range of Antenna Design by P.J.Kahrilas et al., is improved
The radiation efficiency and antenna gain of antenna utilize its planar design characteristic so that support construction and aerial array are simplified, drop
Low processing cost and difficulty are (referring to P.J.Kahrilas, " HAPDAR-An operational phased array
radar,”Proc.IEEE,vol.56,no.11,pp.1967–1975,Nov.1968).Meanwhile D.T.McGrath et al. is to flat
The basic conception and mentality of designing of face lens antenna, focus characteristics have carried out systematic research so that the spoke of planar lens antenna
Characteristic is penetrated to be greatly improved (referring to D.T.McGrath, " Planar three-dimensional constrained
lenses,”IEEE Trans.Antennas Propag.,vol.34,no.1,pp.46–50,Jan.1986.)。
But due to the introducing of space electricity-feeding technology so that the distance between feed antennas and planar lens aerial array
A focal length must be kept, to ensure that antenna has preferable radiation efficiency.But this can greatly increase the thickness of antenna,
Cause antenna structure volume excessive.
Invention content
The purpose of the present invention is to provide a kind of ultralow section lens days based on ray-tracing principles and metamaterial structure
Line, it under the premise of the radiation characteristic for ensureing antenna stabilization, can greatly reduce the section of antenna and reduce volume.
A kind of ultralow section lens antenna based on ray-tracing principles and metamaterial structure, including Feed Horn, polarization
Reverse reflecting plate, single polarization transmission array and supporting rack.Feed Horn is set to the upper surface center of twist-reflector reflecting plate, single
Polar transmission array is set to above twist-reflector reflecting plate, supporting rack respectively with Feed Horn, twist-reflector reflecting plate, monopole
Change transmission array to be fixedly connected；Circular array of several twist-reflector artificial magnetic conductor lists are set on twist-reflector reflecting plate
Member sets circular array of several single polarization transmission array units, twist-reflector artificial magnetic conductor in single polarization transmission array
The area of the circular array of unit composition is less than the circular array of single polarization transmission array unit composition and two circular projections are concentric.
Using above-mentioned antenna, each twist-reflector artificial magnetic conductor unit includes first medium substrate, metal floor, metal
Change through-hole, square-shaped metal patch.It is close between the first medium substrate of adjacent polarized torsion artificial magnetic conductor unit, metal floor
It is printed on the lower surface of first medium substrate, square-shaped metal patch is printed on the upper surface of first medium substrate and adjacent polarized
There are gaps, plated-through hole between the square-shaped metal patch of torsion artificial magnetic conductor unit to be located at the inside of first medium substrate
And both ends are connected respectively with square-shaped metal patch and metal floor.
Using above-mentioned antenna, square-shaped metal patch of each single polarization transmission array unit including upper strata loading U-type groove,
Second medium substrate layer, the metal layer of the middle layer loading compact photon band gap of single side, third medium substrate layer and lower floor's loading are U-shaped
The square-shaped metal patch of slot.The square-shaped metal patch of upper strata loading U-type groove is printed on the upper surface of second medium substrate layer,
The metal layer of the middle layer loading compact photon band gap of single side is located between second medium substrate layer and third medium substrate layer, lower floor
The square-shaped metal patch of loading U-type groove is printed on the lower surface of third medium substrate layer；Adjacent monopoles transmission array unit
Second medium substrate interlayer abut, the third medium substrate interlayer of adjacent monopoles transmission array unit abuts, adjacent monopoles
The metal interlevel minor matters band for changing the middle layer loading compact photon band gap of single side of transmission array unit is connected.
Compared with prior art, the present invention its remarkable advantage is：(1) it is proposed by the present invention based on ray-tracing principles and super
The ultralow section lens antenna of material structure, compared with based on common plane lens antenna, which is based on ray tracing principle,
Pass through twist-reflector reflecting plate and single polarization transmission array, thus it is possible to vary the polarization of electromagnetic wave on propagation path so that propagate
Path, which can be realized, repeatedly to be converted into, and effectively improves the electromagnetic wave propagation path from feed, it is saturating to significantly reduce plane
The height of mirror antenna, lens antenna height are only original 1/3；Meanwhile cross polarization also improves a lot；(2) it is of the invention
The ultralow section lens antenna based on ray-tracing principles and metamaterial structure proposed, still remains conventional planar lens day
The high efficiency of line and characteristics, the aperture efficiency of antenna such as simple in structure can reach 46%；(3) it is proposed by the present invention to be based on ray
The ultralow section lens antenna of following principle and metamaterial structure, simple in structure using microwave-medium plate, handling ease, weight
Relatively small, cost is relatively low.
The invention will be further described with reference to the accompanying drawings of the specification.
Description of the drawings
Fig. 1 is the graphics and side the present invention is based on ray-tracing principles and the ultralow section lens antenna of metamaterial structure
View, wherein figure (a) is graphics, figure (b) is side view.
Fig. 2 is the vertical view and side view of twist-reflector artificial magnetic conductor unit of the present invention, wherein figure (a) is vertical view,
It is side view to scheme (b).
Fig. 3 is the vertical view and side view of single polarization transmission array unit of the present invention, wherein figure (a) is loading U-type groove
The vertical view of square-shaped metal patch, figure (b) are the metal layer for loading the compact photon band gap of single side, and figure (c) is side view.
Fig. 4 is the present invention is based on the transmission of the single polarization of ray-tracing principles and the ultralow section lens antenna of metamaterial structure
Array element is in different length DyIn the case of length, curve that the amplitude and phase of transmission coefficient change with flat rate.
Fig. 5 is the single polarization transmission array list of the ultralow section lens antenna based on ray-tracing principles and metamaterial structure
Member and floor are in electromagnetic wave incidence angles degree, and the amplitude and phase of reflectance factor are with the curve of the variation of frequency.
Fig. 6 is the twist-reflector people the present invention is based on ray-tracing principles and the ultralow section lens antenna of metamaterial structure
Work magnetic conductance body unit is in electromagnetic wave incidence angles degree, and the amplitude and phase of reflectance factor are with the variation feelings of frequency
Condition.
Fig. 7 is the structural representation the present invention is based on ray-tracing principles and the ultralow section lens antenna of metamaterial structure
Figure.
Fig. 8, which is that the present invention is based on the ultralow section lens antennas of ray-tracing principles and metamaterial structure, to be operated in center frequency
During rate point, the main polarization and Cross polarization pattern in E faces and H faces, wherein figure (a) is E surface radiation directional diagrams, figure (b) is H faces
Antenna pattern.
Fig. 9 is the present invention is based on the ultralow section lens antennas of ray-tracing principles and metamaterial structure in working band
Antenna gain and the curve that changes with frequency of antenna aperture efficiency.
Specific embodiment
With reference to Fig. 1 (a) (b), the present invention is a kind of ultralow section lens based on ray-tracing principles and metamaterial structure
Antenna, including Feed Horn 1, twist-reflector reflecting plate 2, single polarization transmission array 3 and supporting rack 4, Feed Horn 1 is mounted on pole
Change the upper surface center of torsion reflecting plate 2, the top of twist-reflector reflecting plate 2 setting single polarization transmission array 3, supporting rack 4 is the bottom of from
Portion's Feed Horn 1 prolongs life to twist-reflector reflecting plate 2 and single polarization transmission array 3 successively, anti-with Feed Horn 1, twist-reflector
Penetrate plate 2, single polarization transmission array 3 is connected.
The distance between twist-reflector reflecting plate 2, single polarization transmission array 3 should cause antenna gain to maximize.
With reference to Fig. 1 (a) (b) and Fig. 2 (a) (b), twist-reflector reflecting plate 4 includes 880 circular array of twist-reflectors
Artificial magnetic conductor unit 5, wherein each twist-reflector artificial magnetic conductor unit 5 include first medium substrate 7, metal floor 8,
Plated-through hole 9, square-shaped metal patch 10, plated-through hole 9 are located at the inside of first medium substrate 7, and following table thereon
Face is connected with the metal floor 8 of square-shaped metal patch 10.Square-shaped metal patch 10 is printed on the upper table of first medium substrate 7
Face, metal floor 8 are printed on the lower surface of first medium substrate 7；Exist between adjacent twist-reflector artificial magnetic conductor unit 5
Gap.
Plated-through hole 9 sets two and the projection on square-shaped metal patch 10 is located at square-shaped metal patch 10
On diagonal so that antenna has the function of polarization circulation.
With reference to Fig. 1 (a) (b) and Fig. 3 (a) (b) (c), single polarization transmission array 4 includes 660 circular array of monopoles
Change transmission array unit 6, wherein each single polarization transmission array unit 6 includes the square-shaped metal patch of upper strata loading U-type groove
11st, second medium substrate layer 12, the middle layer loading metal layer 13 of the compact photon band gap of single side, third medium substrate layer 14, under
The square-shaped metal patch 15 of layer loading U-type groove, the square-shaped metal patch of upper strata loading U-type groove are printed on medium substrate II12
Upper surface, middle layer load the compact photon band gap of single side (referring to B.Rahmati and H.R.Hassani, " Low-
Profile SlotTransmitarray Antenna,"in IEEE Transactions on Antennas and
Propagation, vol.63, no.1, pp.174-181, Jan.2015.) metal layer 13 be located at 12 He of second medium substrate layer
Between third medium substrate layer 14, the square-shaped metal patch 15 of lower floor's loading U-type groove is printed on third medium substrate layer 14
Lower surface.
The area for the circular array that twist-reflector artificial magnetic conductor unit 5 forms is formed with single polarization transmission array unit 6
Circular array area between ratio be more than 2：3, and antenna gain is maximized.
The first medium substrate 7, second medium substrate 12, third medium substrate 14 permittivity εrBe 2.2~
10.2；7 thickness h of first medium substrateaFor 0.1mm~1mm, the thickness h of 12 third medium substrate 14 of second medium substrate is
0.1mm~0.8mm wherein λ are free space wavelength.
The long w of the square-shaped metal patch 10 is 1.5mm~8mmg；The diameter d of plated-through hole 9 for 0.2mm~
0.5mm, wherein λgMedium effective wavelength for first medium substrate 7.
The square-shaped metal patch 11 of the upper strata loading U-type groove and the square-shaped metal patch 15 of lower floor's loading U-type groove
Length of side WyAnd WxFor 3mm~5mm；The width G s of U-type groove is 0.1mm~0.5mm；Width DxAnd DyFor 1.2mm~5mm；Metal
The width G of band is 0.1mm~0.8mm；The minor matters strip width of the metal layer 13 of the middle layer loading compact photon band gap of single side
WLFor 0.1mm~0.5mm；Metal patch width WcAnd LcFor 1mm~4mm；Groove width GcFor 0.2mm~1.5mm.
Square 10 center of technology patch is to the spacing d at 9 center of plated-through holetFor 0.3~0.7mm, non metallic edge
Width g/2 be 0.1~0.4mm.
With reference to Fig. 1 (a) (b) and Fig. 3 (a) (b) (c), the ultralow section based on ray-tracing principles and metamaterial structure is saturating
The square-shaped metal of the upper strata loading U-type groove of each single polarization transmission array unit 6 is pasted in single polarization transmission array 4 in mirror antenna
The length D of the U-type groove of piece 11 and the square-shaped metal patch 15 of lower floor's loading U-type grooveyAnd DxIt is not exactly the same, along y-axis and x
The D for often arranging unit of axis arrangementyAnd DxIt is the D for often arranging unit that is inconsistent, arranging along x-axis and y-axisyAnd DxIt is from centre
With surrounding successively gradual change.
Refinement explanation is carried out to the details and working condition of the specific device of the present invention with reference to embodiment.
Embodiment
With reference to Fig. 1, Fig. 2 and Fig. 3 it is found that the planar lens antenna includes Feed Horn 1, twist-reflector reflecting plate 2, monopole
Change transmission array 3 and supporting rack 4.Twist-reflector reflecting plate 4 includes 880 circular array of twist-reflector artificial magnetic conductor lists
Member 5, wherein each twist-reflector artificial magnetic conductor unit 5 includes first medium substrate 7, metal floor 8, plated-through hole 9.
Single polarization transmission array 4 includes 660 circular array of single polarization transmission array units 6, wherein each single polarization transmission array
Column unit 6 includes the square-shaped metal patch 11, second medium substrate layer 12, middle layer loading single side of upper strata loading U-type groove
Metal layer 13, third medium substrate layer 14 and the lower floor of compact photon band gap load the square-shaped metal patch 15 of U-type groove.Wherein
First medium substrate 7,12 third medium substrate 14 of second medium substrate dielectric constant be 2.2~10.2；First medium
7 thickness h of substrateaFor 0.508mm, the thickness h of second medium substrate 12 and third medium substrate 14 is 0.2mm；Square gold
The long w for belonging to patch 10 is 2.45mm；The diameter d of plated-through hole 9 is 0.2mm；Square 10 center of technology patch to metallization
The spacing d at through-hole [9] centertFor 0.45mm, the width g/2 of non metallic edge is 0.25mm, and upper strata loads the square of U-type groove
The length of side W of metal patch 11 and the square-shaped metal patch 15 of lower floor's loading U-type grooveyAnd WxFor 3.5mm；The width G of U-type groovesFor
0.2mm；Width DxAnd DyFor 1.5mm；The width G of metal band is 0.2mm；Middle layer loads the gold of the compact photon band gap of single side
Belong to the minor matters strip width W of layer 13LFor 0.2mm；Metal patch width WcAnd LcFor 2.45mm,；Groove width GcFor 0.33mm.
With reference to Fig. 1 and Fig. 3, each single polarization transmission array list in single polarization transmission array 4 in the planar lens antenna
The U-type groove of the square-shaped metal patch 11 of the upper strata loading U-type groove of member 6 and the square-shaped metal patch 15 of lower floor's loading U-type groove
Length DyAnd DxThe D for often arranging unit that is not exactly the same, arranging along y-axis and x-axisyAnd DxIt is inconsistent, along x-axis and y
The D for often arranging unit of axis arrangementyAnd DxIt from Intermediate Gray surrounding is the gradual change from 1.3mm to 1.7mm successively to be.
With reference to Fig. 4, when plane x polarized waves impinge perpendicularly on single polarization transmission array unit 6, electromagnetic wave can be transmitted logical
Cross single polarization transmission array unit 6.The transmission phase of transmission wave can be with DyChange and consecutive variations, phase change is ranging from
100 °~-430 °, be more than 360 °, this is consistent with common transmission array unit；The transmission amplitude of transmission wave is with Dy
Change and change, working band changes to 28GHz~34GHz from 22GHz~28GHz.In working band, transmission coefficient width
Degree is more than -3dB.
With reference to Fig. 5, when y polarization planes wave is incident on single polarization transmission array unit 6 from different perspectives, plane wave can quilt
Single polarization transmission array unit 6 reflects.In the frequency range of 26.5GHz~29.5GHz, with incident angle from 0 °~
30 ° of variations, reflectance factor are more than -0.1dB；For floor, the phase of the reflectance factor of single polarization transmission array unit 6
The delay less than 20 ° can occur, the fluctuation range of phase is less than 10 °.In this case, single polarization transmission array unit 6 can
To be considered lossless and with mutually reflection.
With reference to Fig. 6, when plane wave is incident on twist-reflector artificial magnetic conductor unit 5 from different perspectives, plane wave passes through
Twist-reflector can be polarized torsion artificial magnetic conductor 5 and reflect.As incident angle increases to 30 ° from 0 °, the damage of back wave
Consumption increases to 0.3dB from 0.1dB, and 10 ° of phase fluctuation, this phase can also occur with the variation of incident angle for reflected phase
Very little is fluctuated, the performance of antenna is influenced limited.
It with reference to Fig. 7, can obtain, the y polarized electromagnetic waves 1 radiated from Feed Horn 1 can coverlet polar transmission array 3
Twist-reflector reflecting plate 2 is reflected into, 90 ° of phase change can occur by twist-reflector reflecting plate 2 for the polarized electromagnetic waves 2 of y, because
This is converted into the polarized electromagnetic waves 3 of x, is finally able to, by single polarization transmission array 3, by specific phase change, be radiated
Free space.In this process, electromagnetic wave propagation path is by repeatedly equivalent reflection so that the section of antenna obtains very big
Reduction, the distance between single polarization transmission array 3 and twist-reflector reflecting plate 2 are reduced to original 1/3.
With reference to Fig. 8 and Fig. 9, in center frequency points, radiation pattern has good symmetry, and cross polarization is small
In -30dB.It can be obtained by gain curve, antenna obtains maximum gain in 27.8GHz, size 25.6dBi,
In the range of 27.4GHz~28.8GHz, antenna gain variation is less than 1dB, and antenna efficiency can reach 46%.
As known from the above, the ultralow section lens antenna of the invention based on ray-tracing principles and metamaterial structure can
The section of antenna is largely reduced, realizes compact antenna structure, while high radiation effect is realized in wide frequency band
Rate and low cross polarization characteristics.
Claims (10)
1. a kind of ultralow section lens antenna based on ray-tracing principles and metamaterial structure, which is characterized in that including feed
Loudspeaker (1), twist-reflector reflecting plate (2), single polarization transmission array (3) and supporting rack (4)；Wherein
Feed Horn (1) is set to the upper surface center of twist-reflector reflecting plate (2),
Single polarization transmission array (3) is set to above twist-reflector reflecting plate (2),
Supporting rack (4) is fixedly connected respectively with Feed Horn (1), twist-reflector reflecting plate (2), single polarization transmission array (3)；
Circular array of several twist-reflector artificial magnetic conductor units (5) are set on twist-reflector reflecting plate (2),
Circular array of several single polarization transmission array units (6) are set in single polarization transmission array (3),
The area of the circular array of twist-reflector artificial magnetic conductor unit (5) composition is less than single polarization transmission array unit (6) group
Into circular array area and two circular projections it is concentric.
2. antenna according to claim 1, which is characterized in that each twist-reflector artificial magnetic conductor unit (5) includes
One medium substrate (7), metal floor (8), plated-through hole (9), square-shaped metal patch (10)；Wherein
It is close between the first medium substrate (7) of adjacent polarized torsion artificial magnetic conductor unit (5),
Metal floor (8) is printed on the lower surface of first medium substrate (7),
Square-shaped metal patch (10) is printed on the upper surface of first medium substrate (7) and adjacent polarized torsion artificial magnetic conductor list
There are gap between the square-shaped metal patch (10) of first (5),
Plated-through hole (9) positioned at the inside of first medium substrate (7) and both ends respectively with square-shaped metal patch (10) and gold
Possession plate (8) is connected.
3. antenna according to claim 2, which is characterized in that plated-through hole (9) sets two and in square-shaped metal
Projection on patch (10) is located on the diagonal of square-shaped metal patch (10).
4. antenna according to claim 1, which is characterized in that each single polarization transmission array unit (6) adds including upper strata
Carry the gold of square-shaped metal patch (11), second medium substrate layer (12), middle layer the loading compact photon band gap of single side of U-type groove
Belong to the square-shaped metal patch (15) of layer (13), third medium substrate layer (14) and lower floor's loading U-type groove；Wherein
The square-shaped metal patch (11) of upper strata loading U-type groove is printed on the upper surface of second medium substrate layer (12),
The metal layer (13) of the middle layer loading compact photon band gap of single side is positioned at second medium substrate layer (12) and third medium base
Between plate layer (14),
The square-shaped metal patch (15) of lower floor's loading U-type groove is printed on the lower surface of third medium substrate layer (14)；
It is abutted between the second medium substrate layer (12) of adjacent monopoles transmission array unit (6),
It is abutted between the third medium substrate layer (14) of adjacent monopoles transmission array unit (6),
Minor matters item between the metal layer (13) of the middle layer loading compact photon band gap of single side of adjacent monopoles transmission array unit (6)
Band is connected.
5. the antenna according to Claims 2 or 3, which is characterized in that the permittivity ε of first medium substrate I (7)rIt is
2.2~10.2, thickness haFor 0.1mm~1mm.
6. the antenna according to Claims 2 or 3, which is characterized in that square technology patch (10) center is logical to metallization
The spacing d at hole (9) centertFor 0.3~0.7mm, the width g/2 of non metallic edge is 0.1~0.4mm.
7. antenna according to claim 4, which is characterized in that second medium substrate layer (12), third medium substrate layer
(14) permittivity εrIt is 2.2~10.2, thickness h is 0.1mm~0.8mm.
8. the antenna according to Claims 2 or 3, which is characterized in that the long w of square-shaped metal patch (10) for 1.5mm~
8mm, the diameter d of plated-through hole (9) is 0.2mm~0.5mm.
9. antenna according to claim 4, which is characterized in that upper strata loading U-type groove square-shaped metal patch (11) and
The length of side W of the square-shaped metal patch (15) of lower floor's loading U-type grooveyAnd WxFor 3mm~5mm, the width G of U-type groovesFor 0.1mm~
0.5mm, width DxAnd DyFor 1.2mm~5mm, the width G of metal band is 0.1mm~0.8mm；Middle layer loading single side is compact
The minor matters band W of the metal layer (13) of photon band gapLWidth is 0.1mm~0.5mm, metal patch width WcAnd LcFor 1mm~
3mm, groove width GcFor 0.2mm~1.5mm.
10. the antenna according to claim 4 or 8, which is characterized in that each single polarization passes in single polarization transmission array (4)
The square-shaped metal patch (11) of the upper strata loading U-type groove of defeated array element (6) and the square-shaped metal patch of lower floor's loading U-type groove
The length D of the U-type groove of piece (15)yAnd DxIt is not exactly the same, DyAnd DxFrom intermediate gradual change successively around.
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| CN109728446A (en) * | 2018-12-28 | 2019-05-07 | 浙江大学 | The active super surface dielectric lens antenna with holes of two-dimensional scanning varactor |
| CN109873252A (en) * | 2019-04-03 | 2019-06-11 | 浙江大学 | The active super surface electromagnetic lens antenna of circular polarisation varactor |
| CN110783692A (en) * | 2019-11-05 | 2020-02-11 | Oppo广东移动通信有限公司 | Antenna array and electronic equipment |
| CN111541031A (en) * | 2020-04-16 | 2020-08-14 | 华南理工大学 | Broadband low-profile transmission array antenna and wireless communication equipment |
| CN112421227A (en) * | 2020-11-23 | 2021-02-26 | 西安电子科技大学 | Broadband double-layer metal transmission array antenna with polarization rotation characteristic |
| CN117578084A (en) * | 2024-01-17 | 2024-02-20 | 南京理工大学 | Low-profile all-metal folding transmission array antenna |
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| ALIREZA FOROOZESH, MEMBER: "Investigation Into the Application of Artificial Magnetic Conductors to Bandwidth Broadening,Gain Enhancement and Beam Shaping of Low Profile and Conventional Monopole Antennas", 《IEEE TRANSACTIONS ON ANTENNAS AND PROPAGATION》 * |
| BAHMAN RAHMATI AND HAMID R. HASSANI: "Low-Profile Slot Transmitarray Antenna", 《IEEE TRANSACTIONS ON ANTENNAS AND PROPAGATION》 * |
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| CN109873252A (en) * | 2019-04-03 | 2019-06-11 | 浙江大学 | The active super surface electromagnetic lens antenna of circular polarisation varactor |
| CN109873252B (en) * | 2019-04-03 | 2020-07-21 | 浙江大学 | Circularly polarized varactor active super-surface electromagnetic lens antenna |
| CN110783692A (en) * | 2019-11-05 | 2020-02-11 | Oppo广东移动通信有限公司 | Antenna array and electronic equipment |
| CN110783692B (en) * | 2019-11-05 | 2021-03-23 | Oppo广东移动通信有限公司 | Antenna array and electronic equipment |
| CN111541031A (en) * | 2020-04-16 | 2020-08-14 | 华南理工大学 | Broadband low-profile transmission array antenna and wireless communication equipment |
| CN111541031B (en) * | 2020-04-16 | 2021-08-10 | 华南理工大学 | Broadband low-profile transmission array antenna and wireless communication equipment |
| CN112421227A (en) * | 2020-11-23 | 2021-02-26 | 西安电子科技大学 | Broadband double-layer metal transmission array antenna with polarization rotation characteristic |
| CN112421227B (en) * | 2020-11-23 | 2021-11-16 | 西安电子科技大学 | Broadband double-layer metal transmission array antenna with polarization rotation characteristic |
| CN117578084A (en) * | 2024-01-17 | 2024-02-20 | 南京理工大学 | Low-profile all-metal folding transmission array antenna |
| CN117578084B (en) * | 2024-01-17 | 2024-04-23 | 南京理工大学 | Low-profile all-metal folding transmission array antenna |
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