CN104638378A - Antenna baffle board and low-profile antenna - Google Patents
Antenna baffle board and low-profile antenna Download PDFInfo
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- CN104638378A CN104638378A CN201310566093.XA CN201310566093A CN104638378A CN 104638378 A CN104638378 A CN 104638378A CN 201310566093 A CN201310566093 A CN 201310566093A CN 104638378 A CN104638378 A CN 104638378A
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Abstract
An antenna baffle board comprises at least one metamaterial plate layer, each metamaterial plate layer comprises a base plate and a plurality of conductive geometric structures arrayed on the base plate, and one side of the base plate with the conductive geometric structures is a reflecting surface of the antenna baffle board. Each conductive geometric structure comprises two H-shaped structures crossly distributed, middle beams of the H-shaped structures are perpendicular mutually, and the conductive geometric structures are configured to enable the distance between the antenna baffle board and the antenna body to be smaller than one fourth of wavelength of antenna electromagnetic waves, and the field intensity of the electromagnetic waves reflected by the antenna reflecting board and electromagnetic waves of the antenna body directly radiated to the space is strongest. A low-profile antenna comprises an antenna body and the antenna baffle board. The antenna baffle board and the antenna body are arranged in parallel and spaced. The antenna adopting the antenna baffle board can reduce profile and increase gains.
Description
Technical field
The present invention relates to antenna technology, particularly relate to a kind of antenna-reflected plate and low profile antenna.
Background technology
The antenna body of existing antenna to the electromagnetic wave of reflecting plate radiation after baffle reflection, can superpose with the electromagnetic wave to space radiation, when antenna body and reflecting plate spacing quarter-wave, two electromagnetic wave phase places are identical, the radio field intensity in vertical exit direction is the strongest, for this reason, antenna body relative reflection plate height is confined to fixed wave length, causes the section of antenna higher.
Summary of the invention
The object of the invention is to overcome the higher problem of prior art antenna section, a kind of antenna-reflected plate and the low profile antenna with this reflecting plate are provided.
For achieving the above object, the present invention is by the following technical solutions:
A kind of antenna-reflected plate, comprise at least one metamaterial sheet, each metamaterial sheet comprises substrate and array arrangement multiple conduction geometries on the substrate, the side that described substrate has a described conduction geometry is the reflecting surface of described antenna-reflected plate, described conduction geometry comprises two I-shape constructions of transverse and longitudinal arranged crosswise, the intermediate beam of described two I-shape constructions is mutually vertical, under described conduction geometry is configured and makes the spacing of described antenna-reflected plate and antenna body be less than the quarter-wave situation of antenna electric magnetic wave, the field intensity that electromagnetic wave after the reflection of described antenna-reflected plate and antenna body superpose directly to the electromagnetic wave of space radiation is the strongest.
Further, described substrate is divided into multiple metamaterial unit, wherein each metamaterial unit is placed with a described conduction geometry.
Further, in described conduction geometry, top margin and the base of an I-shape construction are not connected mutually with the top margin of another I-shape construction and base, are formed in four angle tool square non-close structures jaggy.
Further, the length of the top margin of described two I-shape constructions, base and intermediate beam is 0 ~ 100mm.
Further, described conduction geometry is copper, aluminium, iron, gold, silver, ITO, graphite or carbon nano-tube material.
Further, the live width of described conduction geometry is 0.01mm ~ 10mm.
Further, the length of each metamaterial unit and width are 1mm ~ 150mm.
Further, described substrate is F4B, FR4, pottery, polytetrafluoroethylene, ferroelectric, iron oxygen or ferromagnetic material plate.
A kind of antenna, comprise antenna body and any one antenna-reflected plate aforementioned, described antenna-reflected plate and antenna body be arranged in parallel and keep at a certain distance away.
Further, described antenna is half-wave dipole antenna.
Further, the length of described antenna body is 50mm ~ 500mm, and the area of described antenna-reflected plate is 50mm*50mm ~ 500mm*500mm, and the spacing of described antenna body and described antenna-reflected plate is 2.5mm ~ 25mm.
The present invention adopts metamaterial sheet as antenna-reflected plate, metamaterial sheet has unique conduction geometry, by arranging the array of two I-shaped conduction geometries of transverse and longitudinal arranged crosswise at antenna-reflected plate, the Meta Materials reflecting plate formed has high impedance surface characteristic, can significantly strengthen incoming electromagnetic wave reflection phase modulation ability, control the reflected wave of reflecting plate and the phase difference of incident wave, by conduction geometry, under spacing antenna-reflected plate being arranged in antenna-reflected plate and antenna body is less than quarter-wave situation, the field intensity that electromagnetic wave and antenna body after the reflection of antenna-reflected plate superpose directly to the electromagnetic wave of space radiation is the strongest, thus it is best when making antenna body be less than quarter-wave relative to the height of reflecting plate, the section of antenna can be reduced thus.Meanwhile, this antenna-reflected plate also can improve the directivity of electromagenetic wave radiation, and significantly improves the gain of antenna.
Accompanying drawing explanation
Fig. 1 is the individual layer metamaterial sheet structural representation in the embodiment of the present invention;
Fig. 2 is the multi-layer metamaterial lamellar structure schematic diagram in the embodiment of the present invention;
Fig. 3 is the conduction geometry arrangement schematic diagram in the embodiment of the present invention;
Fig. 4 and Fig. 5 is the conduction geometry schematic diagram in the embodiment of the present invention;
Fig. 6 is the half-wave dipole antenna structural representation of the embodiment of the present invention
Fig. 7 uses the reflecting plate of the embodiment of the present invention and uses the gain contrast figure of antenna in all directions of traditional reflective plate.
Embodiment
Below in conjunction with accompanying drawing, embodiments of the invention are elaborated.It is emphasized that following explanation is only exemplary, instead of in order to limit the scope of the invention and apply.
Meta Materials is a kind of artificial composite structure material with extraordinary physical property not available for natural material, by the ordered arrangement to conduction geometry, can change relative dielectric constant and the magnetic permeability of in space often.Meta Materials can realize refractive index that common material cannot possess, impedance and wave penetrate capability within the specific limits, thus can effectively control electromagnetic wave propagation characteristic.The present invention is based on the Super-material antenna reflecting plate of conduction geometry, the high impedance surface characteristic utilizing conduction geometry to bring strengthens incoming electromagnetic wave reflection phase modulation ability, control the phase difference of reflected wave and incident wave, offset the space quadrature of different profile antenna, make under the spacing of antenna-reflected plate and antenna body is less than quarter-wave situation, the field intensity that the electromagnetic wave after the reflection of antenna-reflected plate and antenna body superpose directly to the electromagnetic wave of space radiation is the strongest; Meanwhile, the directivity of electromagenetic wave radiation can also be improved, improve the gain of antenna.
As depicted in figs. 1 and 2, embodiments of the invention provide a kind of antenna-reflected plate, and it comprises at least one metamaterial sheet 1, and each metamaterial sheet 1 comprises substrate 10 and array arrangement conduction geometry 20 on the substrate 10.
Fig. 1 has a metamaterial sheet 1 to be described for reflecting plate.Reflecting plate shown in Fig. 2 has multiple metamaterial sheet 1, and each metamaterial sheet 1 superposes along the direction perpendicular to lamella, and is assembled into one by modes such as mechanical connection, welding or bondings.When actual design, can adopt two substrates, and conduct electricity geometry array arrangement wherein on a substrate, another substrate covers conduction geometry, is folded in by conduction geometry between two substrates, can reaches object of the present invention equally.Such as adopt 3 laminar substrates, two-layer conduction geometry is intervally arranged between 3 laminar substrates.In like manner, adopt 5 laminar substrates, 3 layers of conduction geometry are intervally arranged between 5 laminar substrates.The concrete quantity of the present invention to metamaterial sheet does not limit.Usually, when meeting performance, a metamaterial sheet just can use as Meta Materials reflecting plate.The conduction geometry place plane of array arrangement is parallel with electromagnetic Electric and magnetic fields direction, vertical with incoming electromagnetic direction of wave travel.
As shown in Figure 3, the substrate 10 in metamaterial sheet 1 can be divided into multiple metamaterial unit, each metamaterial unit is placed with a conduction geometry 20.The division number of the metamaterial unit shown in figure is only signal, not as limitation of the present invention.
As shown in Fig. 3, Fig. 4 and Fig. 5, in one embodiment of the invention, each conduction geometry comprises two I-shape constructions of transverse and longitudinal arranged crosswise, and intermediate beam c, d of described two I-shape constructions are mutually vertical.Preferably, in described conduction geometry, top margin and base e, f of an I-shape construction are not connected mutually with the top margin of another I-shape construction and base e, f, are formed to be square on the whole but on four angle tool non-close structures jaggy.Preferably, the length of the top margin of described two I-shape constructions, base e, f and intermediate beam c, d can be 0 ~ 100mm, but is less than length/width a, the b of metamaterial unit.I-shape construction is made up of the wire with default live width.Described wire is preferably copper wire.Live width wiry can be 0.01mm ~ 10mm.The length a of each metamaterial unit and width b can be 1mm ~ 150mm.
The conduction above-mentioned shape of geometry and live width make reflecting plate realize the characteristic of high impedance surface, and it between 0 ~ pi, thus can utilize this phase modulation ability to reduce the section of antenna to electromagnetic reflection phase modulation ability.
Numerical value in above embodiment is only example, and in actual applications, can adjust according to actual demand, the present invention is not restricted this.
Metamaterial sheet can be processed by double-sided copper-clad dielectric-slab.In one embodiment of the invention, substrate 10 is obtained by F4B or FR4 composite material.Conduction geometry 20 leads to overetched mode at substrate towards the side of antenna body and adheres on the substrate 10, certainly conduction geometry 20 also can adopt plating, bore quarter, photoetching, electronics quarter or ion quarter etc. mode adhere on the substrate 10.Substrate 10 also can adopt other materials to make, and such as pottery, polytetrafluoroethylene, ferroelectric material, ferrite material or ferromagnetic material are made.Conduction geometry 20 adopts copper cash to make, and the electric conducting materials such as silver-colored line, ITO, graphite or carbon nano-tube can certainly be adopted to make.
The present invention also provides a kind of antenna, and comprise antenna body and antenna-reflected plate as described above, antenna-reflected plate and antenna body be arranged in parallel and keep at a certain distance away.Antenna can be but be not limited to half-wave dipole antenna.Antenna body can be such as but not limited to plate.The length of antenna body is 50mm ~ 500mm, and the area of antenna-reflected plate is 50mm*50mm ~ 500mm*500mm, and the spacing of antenna body and described antenna-reflected plate is 2.5mm ~ 25mm.As shown in Figure 6, in a specific embodiment, the length I of dipole antenna body is 50mm, and the area of reflecting plate is 50mm*50mm, and the spacing h of antenna body and reflecting plate is 12.5mm, and the electromagenetic wave radiation direction of antenna as shown by the directional arrows a in the diagram.The spacing distance of antenna body and reflecting plate can be very little, therefore greatly reduced the section of antenna.As it will be appreciated by those skilled in the art that, antenna also can comprise radiation source, feed element etc. usually, and the present invention is not restricted this.Antenna is by purposes can being but being not limited to WLAN antenna.
Fig. 7 shows the Meta Materials reflecting plate using the embodiment of the present invention and the antenna direction plus comparison diagram of antenna in all directions using traditional reflective plate, dotted line 1 represents gain when using conventional metals reflecting plate, and solid line 2 represents gain when using Meta Materials reflecting plate of the present invention.As can be seen from the comparison result, adopt the Meta Materials reflecting plate of the embodiment of the present invention, the gain of antenna have also been obtained obvious lifting.
Above content is in conjunction with concrete preferred implementation further description made for the present invention, can not assert that specific embodiment of the invention is confined to these explanations.For general technical staff of the technical field of the invention, without departing from the inventive concept of the premise, some simple deduction or replace can also be made, all should be considered as belonging to protection scope of the present invention.
Claims (11)
1. an antenna-reflected plate, it is characterized in that, comprise at least one metamaterial sheet, each metamaterial sheet comprises substrate and array arrangement multiple conduction geometries on the substrate, the side that described substrate has a described conduction geometry is the reflecting surface of described antenna-reflected plate, described conduction geometry comprises two I-shape constructions of transverse and longitudinal arranged crosswise, the intermediate beam of described two I-shape constructions is mutually vertical, described conduction geometry is configured and makes under the spacing of described antenna-reflected plate and antenna body is less than the quarter-wave situation of antenna electric magnetic wave, the field intensity that electromagnetic wave after the reflection of described antenna-reflected plate and antenna body superpose directly to the electromagnetic wave of space radiation is the strongest.
2. antenna-reflected plate according to claim 1, is characterized in that, described substrate is divided into multiple metamaterial unit, wherein each metamaterial unit is placed with a described conduction geometry.
3. antenna-reflected plate according to claim 1, it is characterized in that, in described conduction geometry, top margin and the base of an I-shape construction are not connected mutually with the top margin of another I-shape construction and base, are formed in four angle tool square non-close structures jaggy.
4. antenna-reflected plate according to claim 3, is characterized in that, the length of the top margin of described two I-shape constructions, base and intermediate beam is 0 ~ 100mm.
5. antenna-reflected plate according to claim 1, is characterized in that, described conduction geometry is copper, aluminium, iron, gold, silver, ITO, graphite or carbon nano-tube material.
6. antenna-reflected plate according to claim 5, is characterized in that, the live width of described conduction geometry is 0.01mm ~ 10mm.
7. the antenna-reflected plate according to any one of claim 1 to 6, is characterized in that, the length of each metamaterial unit and width are 1mm ~ 150mm.
8. the antenna-reflected plate according to any one of claim 1 to 6, is characterized in that, described substrate is F4B, FR4, pottery, polytetrafluoroethylene, ferroelectric, iron oxygen or ferromagnetic material plate.
9. a low profile antenna, is characterized in that, comprise antenna body and the antenna-reflected plate as described in any one of claim 1 ~ 8, described antenna-reflected plate and antenna body be arranged in parallel and keep at a certain distance away.
10. low profile antenna according to claim 9, is characterized in that, described antenna is half-wave dipole antenna.
11. low profile antennas according to claim 10, it is characterized in that, the length of described antenna body is 50mm ~ 500mm, and the area of described antenna-reflected plate is 50mm*50mm ~ 500mm*500mm, and the spacing of described antenna body and described antenna-reflected plate is 2.5mm ~ 25mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201310566093.XA CN104638378A (en) | 2013-11-13 | 2013-11-13 | Antenna baffle board and low-profile antenna |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310566093.XA CN104638378A (en) | 2013-11-13 | 2013-11-13 | Antenna baffle board and low-profile antenna |
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| CN104638378A true CN104638378A (en) | 2015-05-20 |
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| CN201310566093.XA Pending CN104638378A (en) | 2013-11-13 | 2013-11-13 | Antenna baffle board and low-profile antenna |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109314310A (en) * | 2016-06-20 | 2019-02-05 | Ls美创有限公司 | Car antenna |
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| US4743919A (en) * | 1986-10-07 | 1988-05-10 | Hughes Aircraft Company | Microwave frequency selective surface having fibrous ceramic body |
| CN102593594A (en) * | 2012-02-29 | 2012-07-18 | 深圳光启创新技术有限公司 | Off-set feed type satellite television antenna and satellite television receiving system thereof |
| CN102721863A (en) * | 2012-07-11 | 2012-10-10 | 上海聚星仪器有限公司 | Multi-frequency signal measurement method for microwave measurement line |
| CN103268985A (en) * | 2013-04-24 | 2013-08-28 | 同济大学 | Electromagnetic wave beam regulating and controlling device |
| CN103296419A (en) * | 2012-03-02 | 2013-09-11 | 深圳光启创新技术有限公司 | Broadband metamaterial antenna housing and antenna system |
| CN103367881A (en) * | 2013-07-16 | 2013-10-23 | 北京邮电大学 | High-gain G-shaped dual-frequency monopole antenna with loaded dual-frequency AMC reflection plate |
| CN203553362U (en) * | 2013-11-13 | 2014-04-16 | 深圳光启创新技术有限公司 | Antenna reflecting plate and low profile antenna |
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2013
- 2013-11-13 CN CN201310566093.XA patent/CN104638378A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4743919A (en) * | 1986-10-07 | 1988-05-10 | Hughes Aircraft Company | Microwave frequency selective surface having fibrous ceramic body |
| CN102593594A (en) * | 2012-02-29 | 2012-07-18 | 深圳光启创新技术有限公司 | Off-set feed type satellite television antenna and satellite television receiving system thereof |
| CN103296419A (en) * | 2012-03-02 | 2013-09-11 | 深圳光启创新技术有限公司 | Broadband metamaterial antenna housing and antenna system |
| CN102721863A (en) * | 2012-07-11 | 2012-10-10 | 上海聚星仪器有限公司 | Multi-frequency signal measurement method for microwave measurement line |
| CN103268985A (en) * | 2013-04-24 | 2013-08-28 | 同济大学 | Electromagnetic wave beam regulating and controlling device |
| CN103367881A (en) * | 2013-07-16 | 2013-10-23 | 北京邮电大学 | High-gain G-shaped dual-frequency monopole antenna with loaded dual-frequency AMC reflection plate |
| CN203553362U (en) * | 2013-11-13 | 2014-04-16 | 深圳光启创新技术有限公司 | Antenna reflecting plate and low profile antenna |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109314310A (en) * | 2016-06-20 | 2019-02-05 | Ls美创有限公司 | Car antenna |
| US10873127B2 (en) | 2016-06-20 | 2020-12-22 | Ls Mtron Ltd. | Vehicular antenna |
| CN109314310B (en) * | 2016-06-20 | 2021-08-20 | Ls美创有限公司 | Vehicle-mounted antenna |
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Application publication date: 20150520 |