CN103730736B - Circularly polarized high-gain and low-profile resonant antenna - Google Patents
Circularly polarized high-gain and low-profile resonant antenna Download PDFInfo
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- CN103730736B CN103730736B CN201410005744.2A CN201410005744A CN103730736B CN 103730736 B CN103730736 B CN 103730736B CN 201410005744 A CN201410005744 A CN 201410005744A CN 103730736 B CN103730736 B CN 103730736B
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Abstract
A circularly polarized high-gain and low-profile resonant antenna comprises a resonant cavity and a linear polarization feed source which is located in the resonant cavity; the resonant cavity comprises a metal plate and a dielectric substrate which are parallel to each other; a plurality of cross gaps are cyclically formed in two orthogonal directions of the metal plate to form the partially reflecting surface; a plurality of rectangular metal patches are cyclically arranged in two orthogonal directions of the upper surface of the dielectric substrate which is opposite to the metal plate to form an artificial magnetic conductor; the lower surface of the dielectric substrate is provided with a ground plate; the metal plate, the dielectric substrate and the ground plate are fixedly connected through fasteners. According to the circularly polarized high-gain and low-profile resonant antenna, the problem that the antenna performance is affected by the feed complexity and the mutual coupling between units due to the feed network and unit array arrangement mode of the existing high-gain circularly polarized antenna is solved.
Description
Technical field
The present invention relates to a kind of high-gain aerial, the high-gain low-profile resonant antenna of more particularly, to a kind of circular polarisation.
Background technology
The fields such as modern radar, satellite communication typically require the circular polarized antenna using higher gain.Typically require employing
Feeding network is realizing amplitude and the phase condition of circular polarisation.On the other hand, generally adopt unit group to realize higher gain
The mode of battle array, the problem therefore brought is the impact of the complicated mutually symplectic antenna performance and between unit of feed.
Content of the invention
Goal of the invention：In order to overcome the deficiencies in the prior art, the present invention provides a kind of high-gain of circular polarisation low
Profile resonant antenna, solves existing high-gain circular polarized antenna by the way of feeding network and unit group battle array, brings feed
The problem of complicated mutual coupling antenna performance and between unit.
For solving above-mentioned technical problem, the technical solution used in the present invention is：
A kind of high-gain low-profile resonant antenna of circular polarisation, the linear polarization feedback including resonator cavity and in resonator cavity
Source, described resonator cavity includes metallic plate arranged in parallel and medium substrate, the cycle on two orthogonal directions of metallic plate
Some cross gaps constituting portion is set and divides reflecting surface, in two orthogonal sides of the medium substrate upper surface relative with metallic plate
The some rectangular metal pasters of cycle setting constitute artificial magnetic conductor upwards, arrange earth plate in the lower surface of medium substrate, described
Metallic plate, medium substrate and earth plate are connected by securing member.
The cross gap of described composition partially reflecting surface Cycle Length in 2 orthogonal directions is equal；Described structure
The length in two orthogonal gaps in across gap is unequal, and width is equal.
The rectangular metal paster of described composition artificial magnetic conductor Cycle Length in 2 orthogonal directions, rectangle gold
The Cycle Length belonging to paster short side direction is less than the Cycle Length of long side direction.
The polarised direction of described linear polarization feed and the long side of rectangular metal paster or short side direction angle at 45 °.
The distance between described earth plate and partially reflecting surface meet d=(1/4+n/2) λ0Condition, wherein λ0For in
The free space wavelength of frequency of heart electromagnetic wave, n=0,1,2....
Beneficial effects of the present invention：1st, the present invention eliminates conventional circular polarization antenna compared with existing circular polarized antenna
Feeding network, longitudinal size is little, and structure is simpler；2nd, the present invention is passed through partially reflective surface and is put down with partially reflecting surface
The artificial magnetic conductor of row constitutes resonator cavity, and using resonance characteristic so that not needing to adopt array structure, gain can get significantly
Raising；3rd, the polarised direction of linear polarization feed of the present invention becomes 45 degree of folders with the long side of rectangular metal paster or short side direction
Angle, the electromagnetic wave that is, linear polarization feed radiates always can be analyzed to the electromagnetic wave of two polarization orthogonal, and its direction is respectively parallel to square
The long side of shape metal patch and minor face, the partially reflecting surface being made up of cross gap is artificial with what rectangular metal paster was constituted
Magnetic conductor constitutes resonator cavity together, and both provide suitable reflected phase between the electromagnetic wave of two polarization orthogonal poor respectively, permissible
Adjust the reflected phase frequency response of partially reflecting surface by adjusting cross metal slit along the length on two-dimensional direction, pass through
The long side adjusting rectangular metal paster to adjust the reflected phase frequency response of artificial magnetic conductor with bond length, realizes line polarization wave
It is transformed to circularly polarised wave, realize low section and high-gain simultaneously.
Brief description
Fig. 1 is the general structure schematic diagram of the present invention.
Fig. 2 be the present invention side view.
Fig. 3 is the structural representation of the partially reflecting surface of the present invention.
Fig. 4 is the structural representation of the partially reflecting surface periodic unit of the present invention.
Fig. 5 is the structural representation of the artificial magnetic conductor of the present invention.
Fig. 6 is the structural representation of the artificial magnetic conductor periodic unit of the present invention.
Fig. 7 is the position view of linear polarization feed.
Fig. 8 is the reflection coefficient chart of the present invention.
Fig. 9 is the axle of the present invention than frequency response curve figure.
Figure 10 is the gain frequency response curve figure of the present invention.
Figure 11 is the horizontal radiation pattern of the present invention.
Figure 12 is the elevation radiation patytern of the present invention.
Specific embodiment
Below in conjunction with the accompanying drawings the present invention is further described.
As shown in Fig. 1,2,3 and 5, a kind of high-gain low-profile resonant antenna of circular polarisation, including resonator cavity 2 and be located at
Linear polarization feed 1 in resonator cavity 2, described resonator cavity 2 includes metallic plate 22 arranged in parallel and medium substrate 21, in gold
Belong to some cross gaps 23 of cycle setting on two orthogonal directions of plate 22 and constitute partially reflecting surface, with metallic plate 22 phase
To medium substrate 21 upper surface two orthogonal directions on some rectangular metal pasters 24 of cycle setting constitute artificial magnetic conductors,
Earth plate 25 is set in the lower surface of medium substrate 21, the distance between earth plate 25 and partially reflecting surface meet d=(1/4+
n/2)λ0Condition, wherein λ0Centered on frequency electromagnetic free space wavelength, n=0,1,2..., described metallic plate 22, be situated between
Matter substrate 21 and earth plate 25 are connected by securing member 26.
As shown in figure 4, the cross gap 23 of the described composition partially reflecting surface cycle in 2 orthogonal directions is long
Degree is equal, is P, and the length constituting two orthogonal gaps in cross gap 23 is respectively SxAnd Sy, width is Sw, and
Gap length is unequal.
As shown in fig. 6, the rectangular metal paster 24 of the described composition artificial magnetic conductor cycle in 2 orthogonal directions is long
Degree, the Cycle Length P of rectangular metal paster 24 short side directionyCycle Length P less than long side directionx, wherein PxCentered on
0.2～0.3 times of the free space wavelength of frequency electromagnetic, the long side of rectangular metal paster 24 and the length of minor face are respectively lx
And ly.
The polarised direction of linear polarization feed 1 of above-described resonant antenna and the long side of rectangular metal paster 24 or minor face
Direction angle at 45 °, the electromagnetic wave that is, linear polarization feed radiates always can be analyzed to the electromagnetic wave of two polarization orthogonal, and its direction is divided
The not long side parallel to rectangular metal paster 24 and minor face, the partially reflecting surface being made up of cross gap 23 and rectangular metal
The artificial magnetic conductor that paster 24 is constituted constitutes resonator cavity 2 together, and both provide suitable between the electromagnetic wave of two polarization orthogonal respectively
Reflected phase poor, can by adjust cross gap 23 adjust the anti-of partially reflecting surface along the length on two-dimensional direction
Penetrate phase place frequency response, adjust the reflected phase frequency of artificial magnetic conductor by the long side and bond length adjusting rectangular metal paster 24
Ring, realize for line polarization wave being transformed to circularly polarised wave, realize low section and high-gain simultaneously.
The design process of each structural parameters for convenience of description, given structural parameters：The l of rectangular metal paster 24x=
4mm,ly=2.5mm, along the Cycle Length P of long side directionx=5mm, along the Cycle Length P of short side directiony=3.6mm, cross
The Cycle Length P=11mm, S in gap 23x=10.5mm, Sy=7.2mm, the wide S of seamw=2mm, mid frequency f=14GHz, ground connection
Plate 25 and the distance between partially reflecting surface 5.5mm, meet:Wherein λ0Centered on frequency electromagnetic freely empty
Between wavelength.The high frequencies such as the Microwave Studio CST of HFSS, CST company from such as Ansoft company of simulation software emulate
Software, on computers analog simulation obtain：Axle shown in reflection coefficient chart as shown in Figure 8, Fig. 9 compares frequency response curve
Gain frequency response curve figure shown in figure, Figure 10, the horizontal radiation pattern shown in Figure 11, the elevation radiation patytern shown in Figure 12.With
On the curve that obtains obtain under prescribed conditions in fact, if changing structural parameters can also obtain similar curve.
Linear polarization feed 1 for ease of the circular polarisation present invention can be made up of microband paste or its modification structures, this
The linear polarization feed 1 of structure is fitted in the upper surface of the medium substrate 21 relative with metallic plate 22, medium substrate 21 upper surface its
Remaining place along the long side of rectangle and short side direction periodic arrangement some rectangular metal paster 24, as shown in Figure 7.
The above be only the preferred embodiment of the present invention it should be pointed out that：Ordinary skill people for the art
For member, under the premise without departing from the principles of the invention, some improvements and modifications can also be made, these improvements and modifications also should
It is considered as protection scope of the present invention.
Claims (6)
1. a kind of circular polarisation high-gain low-profile resonant antenna it is characterised in that：Including resonator cavity (2) and positioned at resonator cavity
(2) the linear polarization feed (1) in, described resonator cavity (2) includes metallic plate (22) arranged in parallel and medium substrate (21),
On two orthogonal directions of metallic plate (22), the more than one cross gap (23) of cycle setting constitutes partially reflecting surface,
On two orthogonal directions of medium substrate (21) upper surface relative with metallic plate (22), the cycle arranges more than one rectangle
Metal patch (24) constitutes artificial magnetic conductor, in lower surface setting earth plate (25) of medium substrate (21), described metallic plate
(22), medium substrate (21) and earth plate (25) are connected by securing member (26).
2. a kind of circular polarisation according to claim 1 high-gain low-profile resonant antenna it is characterised in that：Described composition
The cross gap (23) of partially reflecting surface Cycle Length in 2 orthogonal directions is equal.
3. a kind of circular polarisation according to claim 2 high-gain low-profile resonant antenna it is characterised in that：Described composition
The length in two orthogonal gaps in cross gap (23) is unequal, and width is equal.
4. a kind of circular polarisation according to claim 1 high-gain low-profile resonant antenna it is characterised in that：Described composition
The rectangular metal paster (24) of artificial magnetic conductor Cycle Length in 2 orthogonal directions, rectangular metal paster (24) is short
The Cycle Length of edge direction is less than the Cycle Length of long side direction.
5. a kind of circular polarisation according to claim 1 or 4 high-gain low-profile resonant antenna it is characterised in that：Described
The long side of the polarised direction of linear polarization feed (1) and rectangular metal paster (24) or short side direction angle at 45 °.
6. a kind of circular polarisation according to claim 1 high-gain low-profile resonant antenna it is characterised in that：Described ground connection
The distance between plate (25) and partially reflecting surface meet d=(1/4+n/2) λ0Condition, wherein λ0Centered on frequency electromagnetic
Free space wavelength, n=0,1,2....
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| CN201410005744.2A CN103730736B (en) | 2014-01-07 | 2014-01-07 | Circularly polarized high-gain and low-profile resonant antenna |
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| CN201410005744.2A CN103730736B (en) | 2014-01-07 | 2014-01-07 | Circularly polarized high-gain and low-profile resonant antenna |
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| CN103730736B true CN103730736B (en) | 2017-02-08 |
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| CN104124523A (en) * | 2014-07-24 | 2014-10-29 | 南京理工大学 | Stub loaded artificial magnetic conductor based high gain microstrip antenna |
| CN104836033A (en) * | 2015-04-17 | 2015-08-12 | 中国电子科技集团公司第四十一研究所 | Artificial magnetic conductor reflection chamber for broadband plane helix antenna |
| CN105428815B (en) * | 2015-12-29 | 2018-11-06 | 南京逸然电子科技有限公司 | A kind of wide band high-gain low-profile resonant antenna of all-metal |
| CN106876972A (en) * | 2017-02-28 | 2017-06-20 | 山东大学 | Sub-wavelength resonance cavity circularly polarized antenna |
| CN107069201A (en) * | 2017-02-28 | 2017-08-18 | 山东大学 | Sub-wavelength cavity antenna based on magnetic single-negative material |
| CN106898868A (en) * | 2017-02-28 | 2017-06-27 | 山东大学 | Large scale sub-wavelength cavity antenna based on magnetic single-negative material |
| CN106876896A (en) * | 2017-02-28 | 2017-06-20 | 山东大学 | Circular polarized antenna |
| US11342658B2 (en) | 2018-01-22 | 2022-05-24 | Kyocera Corporation | Repeater |
| EP3843210A4 (en) * | 2018-08-24 | 2022-04-27 | Kyocera Corporation | Structure, antenna, wireless communication module, and wireless communication device |
| CN111043955B (en) * | 2019-09-23 | 2021-08-10 | 上海航天测控通信研究所 | Laminated quasi-optical feed network structure and adjusting method thereof |
| CN110718770A (en) * | 2019-09-29 | 2020-01-21 | 山西大学 | Full-polarization reconfigurable MIMO antenna |
| CN110808461B (en) * | 2019-11-22 | 2021-11-05 | 东南大学 | Low-profile holographic imaging antenna based on Fabry-Perot resonant cavity type structure |
| CN112490689B (en) * | 2020-11-23 | 2022-04-22 | 重庆邮电大学 | C-band resonator antenna constructed by artificial magnetic conductor structure |
| CN113113770B (en) * | 2021-04-30 | 2024-03-19 | 广州智讯通信系统有限公司 | Antenna adopting polarization sensitive molded line-circular polarization converter |
| CN113659331B (en) * | 2021-08-16 | 2022-07-26 | 东南大学 | Low-profile high-gain resonant antenna based on solar cell |
| CN114374098B (en) * | 2021-12-23 | 2022-12-06 | 西安电子科技大学 | Cavity monopole subarray antenna with adjustable broadband low-profile AMC wave beam |
| CN115101914B (en) * | 2022-06-30 | 2023-07-21 | 中国电子科技集团公司第三十八研究所 | Cavity antenna array with low profile and flexible caliber |
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Application publication date: 20140416 Assignee: CHANGSHU HONGBO COMMUNICATION TECHNOLOGY CO., LTD. Assignor: Southeast University Contract record no.: 2017320000053 Denomination of invention: Circularly polarized high-gain and low-profile resonant antenna Granted publication date: 20170208 License type: Exclusive License Record date: 20170310 |
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