CN103594790A - Metamaterial plate, reflector antenna system and electromagnetic wave reflection adjusting method - Google Patents
Metamaterial plate, reflector antenna system and electromagnetic wave reflection adjusting method Download PDFInfo
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- CN103594790A CN103594790A CN201310554971.6A CN201310554971A CN103594790A CN 103594790 A CN103594790 A CN 103594790A CN 201310554971 A CN201310554971 A CN 201310554971A CN 103594790 A CN103594790 A CN 103594790A
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Abstract
The embodiment of the invention discloses a metamaterial plate, a reflector antenna system and an electromagnetic wave reflection adjusting method. In the reflector antenna system containing a feed source and the metamaterial plate, firstly, phase position distribution of electromagnetic waves on the surface of the metamaterial plate is obtained according to the electromagnetic wave transmitting rule of the feed source, then, the size and interval of holes in the metamaterial plate are adjusted, and therefore the transmitting phase positions of the electromagnetic waves reflected from the surface of the metamaterial plate are made to be equal. Divergence of electromagnetic wave signals in the form of spherical waves is converted into remote divergence in the form of plane waves. A reflector of the reflector antenna system is not limited by the formulary of the paraboloid of revolution any more, an ultra-thin antenna is obtained through plane metamaterials instead, and space is saved.
Description
Technical field
The present invention relates to antenna technology, relate in particular to a kind of super plate of material, reflector antenna system and reflection of electromagnetic wave control method.
Background technology
For Prime Focus Antenna, the feed of offset-fed antenna and the installation site of tuner be not vertical with center of antenna tangent plane and cross on the straight line of center of antenna.Therefore, offset-fed antenna does not have the impact of feed shade, and under the identical prerequisite of antenna area, machining accuracy, receive frequency, the gain of offset-fed antenna is greater than Prime Focus Antenna.But common microwave antenna system now, no matter Prime Focus Antenna or offset-fed antenna, they are all the cross sections of the paraboloid of revolution, just the position difference of intercepting.Prime Focus Antenna is the paraboloid of revolution by the part curved surface intercepting with the concentric face of cylinder of paraboloid of revolution rotating shaft, and offset-fed antenna is the part curved surface that the paraboloid of revolution is intercepted by the face of cylinder with paraboloid of revolution rotating shaft decentraction.
In addition, the feed of Prime Focus Antenna and offset-fed antenna and the installation site of tuner must be in the focuses of the paraboloid of revolution.This is that characteristic by the paraboloid of revolution determines.
But traditional reflector antenna is parabolic antenna, the object profile of this parabolic antenna is comparatively heavy, and the section of antenna is higher.Due in Practical Project field, the volume to antenna often, weight, sections etc. have strict demand even to limit, and this traditional parabolic reflector surface antenna is also impracticable.
Along with the appearance of super material, people start to replace traditional parabolic antenna by super plate of material gradually, and still, existing super plate of material can't reflect the sphere electromagnetic wave of offset-fed feed transmitting in parallel wave mode.
Summary of the invention
Embodiment of the present invention technical problem to be solved is, for higher, the super material antenna of parabolic antenna heaviness and section in prior art, cannot spherical wave be modulated to by reflection to the defect of parallel wave again, a kind of super plate of material, reflector antenna system and reflection of electromagnetic wave control method are provided, can realize ultrathin antenna, and reflected beam can be adjusted to parallel wave.
In order to solve the problems of the technologies described above, the embodiment of the present invention provides a kind of super plate of material, feed communication connection with emitting electromagnetic wave, described super plate of material comprises at least one super sheet of material, described super sheet of material comprise substrate and be opened in described suprabasil and for regulating the hole that is transmitted into the electromagnetic outgoing phase place in described super plate of material so that described super plate of material by the electromagnetic wave of described feed transmitting with identical outgoing phase reflection.
In super plate of material of the present invention, described super plate of material is parallel to each other and equal stacking forming of super sheet of material in the form of sheets by a plurality of.
In super plate of material of the present invention, described substrate is made by ceramic material, macromolecular material, ferroelectric material or ferrite material.
Correspondingly, the present invention also provides a kind of reflector antenna system, comprises the feed for emitting electromagnetic wave, it is characterized in that, described reflector antenna system also comprises the super plate of material described in above any one, and described super plate of material is installed in the caustic district of described feed.
In reflector antenna system of the present invention, described feed comprises a plurality of primary radiators of arranging with phase array array way.
In reflector antenna system of the present invention, described primary radiator comprises horn antenna, or Waveguide slot antenna, or microstrip antenna, wherein, described a plurality of primary radiator comprises one or more in described horn antenna, described Waveguide slot antenna, described microstrip antenna.
In reflector antenna system of the present invention, described reflector antenna system also comprises the rear end feeding network with described feed communication connection, and wherein, described rear end feeding network regulates the electromagnetic wave beam of described feed transmitting for realizing.
In reflector antenna system of the present invention, described rear end feeding network comprises the radio circuit consisting of phase shifter, amplifier.
In reflector antenna system of the present invention, described reflector antenna system also comprises structural connection, for connecting described super plate of material and described feed.
On the other hand, the present invention also provides a kind of reflection of electromagnetic wave control method, comprising:
In the reflector antenna system described in above any one, according to the rule of feed emitting electromagnetic wave, obtain the PHASE DISTRIBUTION that electromagnetic wave arrives super plate of material surface;
Regulate size and the spacing in the hole in super plate of material, the electromagnetic outgoing phase place that described super plate of material surface reflection goes out is equated.
In reflection of electromagnetic wave control method of the present invention, also comprise: emulation in advance obtains the hole of various sizes and spacing to the electromagnetic reflection compensation phase place of different frequency Arg(S11), generate hole data storehouse;
Wherein, the size in the hole in the super plate of material of described adjusting and spacing specifically comprise the equal step of electromagnetic outgoing phase place that described super plate of material surface reflection goes out:
According to described electromagnetic wave, arrive the phase place on described super plate of material surface
and the electromagnetic wave outgoing phase place that obtains of expectation
calculating meets relational expression
reflection compensation phase place;
According to the described reflection compensation phase place calculating, in described hole data storehouse, search size and the spacing in corresponding hole;
In described super plate of material, offer the hole of corresponding size and spacing.
Implement the embodiment of the present invention, there is following beneficial effect: the super plate of material that the embodiment of the present invention provides, reflector antenna system and reflection of electromagnetic wave control method, by offer hole in super plate of material, according to the size in hole and spacing, regulate the duty ratio of super plate of material and air, thereby electromagnetic wave signal has been realized from diffusing to the transformation with plane wave form long-distance transmissions with spherical wave form; Its reflecting surface no longer sticks to the fixed pattern of the paraboloid of revolution, and change, with the super material of flat board, makes the ultra-thin flat plane antenna of structure, has saved space.
Accompanying drawing explanation
In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, to the accompanying drawing of required use in embodiment or description of the Prior Art be briefly described below, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skills, do not paying under the prerequisite of creative work, can also obtain according to these accompanying drawings other accompanying drawing.
Fig. 1 is the structural representation of the reflector antenna system that provides of the embodiment of the present invention;
Fig. 2 is the structural representation of the wafer of the super plate of material that provides of one embodiment of the invention;
Fig. 3 is the flow chart of the reflection of electromagnetic wave control method that provides of one embodiment of the invention.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is clearly and completely described, obviously, described embodiment is only the present invention's part embodiment, rather than whole embodiment.Embodiment based in the present invention, those of ordinary skills, not making the every other embodiment obtaining under creative work prerequisite, belong to the scope of protection of the invention.
As electromagnetic a kind of, light is when passing glass, because the wavelength of light (400-700 nanometer) is far longer than the size (0.1 nanometer) of atom, we can describe the response of glass to light by the details parameter of the univers parameter (such as refractive index) of glass rather than the atom of composition glass.Accordingly, at research material, to other electromagnetic waves in the response such as microwave, in material, any yardstick can be with the univers parameter dielectric constant of material to electromagnetic effect much smaller than the structure of electromagnetic wavelength
and magnetic permeability
describe.And dielectric constant and the magnetic permeability as tensor determined electromagnetic response by each micro-structural in pervasive situation.If distributed by any dielectric constant and the magnetic permeability that makes material there are us to need the design of micro-structural in material, so concerning electromagnetic wave, we in fact " creations " a kind of nature also non-existent new material, namely super material.
Fig. 1 is the structural representation of the reflector antenna system 1 that provides of one embodiment of the invention; Fig. 2 is the structural representation of the wafer of the super plate of material 11 that provides of one embodiment of the invention.Reflector antenna system 1 can comprise feed 12 and super plate of material 11, and super plate of material 11 is arranged in the caustic district of feed 12.
Super plate of material 11 is as the reflecting surface of reflector antenna system 1, with feed 12 communication connections of emitting electromagnetic wave.Super plate of material 11 is installed in the caustic district of described feed 12, and one side arranges towards described feed 12, and another side dorsad described feed 12 arranges.
Super plate of material 11 comprises at least one super sheet of material, described super sheet of material comprises substrate and is opened in described substrate and for regulating the hole that is transmitted into the electromagnetic outgoing phase place in described super plate of material 11, so that the electromagnetic wave that described super plate of material 11 is launched feed 12 is with identical outgoing phase reflection.Particularly, super sheet of material can be divided into a plurality of wafers as shown in Figure 2, and each wafer comprises respectively substrate 111 and is opened in the hole 112 in substrate 111, in each substrate 111, can offer a hole 112.By regulating size and the spacing in each hole 112, can regulate the duty ratio of super plate of material and air, thereby can make feed 12 be transmitted into electromagnetic wave in described super plate of material 11 with identical outgoing phase reflection.
Particularly, emulation in advance obtains 112 pairs, the hole electromagnetic reflection compensation phase place of the different frequency Arg(S11 of various sizes, various spacing), generate hole data storehouse.Suppose that the phase place that feed 12 is transmitted into the incident electromagnetic wave on super plate of material 11 surfaces is
the electromagnetic phase place of outgoing on super plate of material 11 surfaces that expectation obtains is
the size in each hole in super plate of material 11 and arranging, all meets
Wherein, substrate 111 can adopt ceramic material, macromolecular material, ferroelectric material, ferrite material or ferromagnetic material to make.Above-mentioned macromolecular material can be polytetrafluoroethylene.The electrical insulating property of polytetrafluoroethylene is very good, and therefore can electromagnetic electric field not produced and be disturbed, and there is good chemical stability, corrosion resistance, long service life, the base material adhering to as metal micro structure is good selection.Certainly, above-mentioned macromolecular material is the composite material such as FR-4, F4b also.
Preferably, super plate of material 11 can be parallel to each other and equal stacking forming of super sheet of material in the form of sheets by a plurality of.That is to say, super plate of material 11 integral body can be regarded a plurality of cube wafers as and be formed by stacking along three-dimensional X-Y-Z direction.Because super plate of material self need exert an influence to electromagnetic wave, conventionally the size of each wafer equate and be required response electromagnetic wavelength 1/10th.The response of 11 pairs of electromagnetic fields of super plate of material depends primarily on the response of each wafer to electromagnetic field, and when wafer quantity is abundant, thereby each wafer will superpose and from macroscopic view, change each physical characteristic of incident electromagnetic wave the response of electromagnetic field.
In the present embodiment, antenna system 1 can also comprise structural connection (not shown in FIG.), for connecting super plate of material 11 and feed 12.Particularly, described structural connection can be used in the relative position that regulates super plate of material 11 and feed 12.Structural connection can be made by metal or nonmetallic materials.By structural connection, can make antenna system 1 be applicable to some specific functions, such as forming monopulse antenna, multi-beam antenna, frequency scan antenna, spectrum reuse antenna, multifrequency community antenna etc.
Although Fig. 2 shows manhole 112, the present invention is not limited to the hole of this character, and in other embodiments of the invention, hole 112 can also be the through hole of any desired configuration such as square opening, irregular hole.In an embodiment of the present invention, preferably hole 112 is set to manhole, because the more convenient processing of manhole and control.When using above-described reflector antenna system 1, can adopt the reflection of electromagnetic wave control method shown in Fig. 3 to be reconstructed wave beam, as shown in Figure 3, the method comprises:
S301, according to the rule of feed 12 emitting electromagnetic waves, obtain the PHASE DISTRIBUTION that electromagnetic wave arrives super plate of material 11 surfaces.Wherein, the rule of feed 12 emitting electromagnetic waves is normally known, according to the rule of feed 12 emitting electromagnetic waves, can obtain the PHASE DISTRIBUTION that electromagnetic wave arrives super plate of material 11 surfaces by the mode of calculating or experiment test, suppose that the phase place of the incident electromagnetic wave on super plate of material 11 surfaces is
Size and the spacing in the hole 112 in S302, the super plate of material 11 of adjusting, equate the electromagnetic outgoing phase place that described super plate of material 11 surface reflections go out.Particularly, emulation in advance obtains 112 pairs, the hole electromagnetic reflection compensation phase place of the different frequency Arg(S11 of various sizes, various spacing), generate hole data storehouse; The electromagnetic wave phase place on the super plate of material surface obtaining according to step S301
and the electromagnetic wave outgoing phase place that obtains of expectation
calculating meets relational expression
reflection compensation phase place; According to the reflection compensation phase place calculating, in hole data storehouse, search size and the spacing in corresponding hole 112; In super plate of material 11, offer the hole 112 of corresponding size and spacing.
Certainly, the selection of substrate 111 also can impact the reflection compensation ability of super plate of material 11, therefore, conventionally understands the material of chosen in advance substrate 111.In addition, also can in step S502, to base material, regulate, step is similar with the property parameters of adjustment hole 112.
The super plate of material that the embodiment of the present invention provides, reflector antenna system and reflection of electromagnetic wave control method, by offer hole in super plate of material, according to the size in hole and spacing, regulate the duty ratio of super plate of material and air, thereby electromagnetic wave signal has been realized from diffusing to the transformation with plane wave form long-distance transmissions with spherical wave form; Its reflecting surface no longer sticks to the fixed pattern of the paraboloid of revolution, and changes with the super material of flat board, thereby makes the ultra-thin flat plane antenna of structure, has saved space.
One of ordinary skill in the art will appreciate that all or part of flow process realizing in above-described embodiment method, to come the hardware that instruction is relevant to complete by computer program, described program can be stored in a computer read/write memory medium, this program, when carrying out, can comprise as the flow process of the embodiment of above-mentioned each side method.Wherein, described storage medium can be magnetic disc, CD, read-only store-memory body (Read-Only Memory, ROM) or random store-memory body (Random Access Memory, RAM) etc.
Above disclosed is only a kind of preferred embodiment of the present invention, certainly can not limit with this interest field of the present invention, one of ordinary skill in the art will appreciate that all or part of flow process that realizes above-described embodiment, and the equivalent variations of doing according to the claims in the present invention, still belong to the scope that invention is contained.
Claims (11)
1. a super plate of material, feed communication connection with emitting electromagnetic wave, it is characterized in that, described super plate of material comprises at least one super sheet of material, described super sheet of material comprise substrate and be opened in described suprabasil and for regulating the hole that is transmitted into the electromagnetic outgoing phase place in described super plate of material so that described super plate of material by the electromagnetic wave of described feed transmitting with identical outgoing phase reflection.
2. super plate of material as claimed in claim 1, is characterized in that, described super plate of material is parallel to each other and equal stacking forming of super sheet of material in the form of sheets by a plurality of.
3. super plate of material as claimed in claim 1, is characterized in that, described substrate is made by ceramic material, macromolecular material, ferroelectric material or ferrite material.
4. a reflector antenna system, comprises the feed for emitting electromagnetic wave, it is characterized in that, described reflector antenna system also comprises the super plate of material as described in any one in claim 1-3, and described super plate of material is installed in the caustic district of described feed.
5. reflector antenna system as claimed in claim 4, is characterized in that, described feed comprises a plurality of primary radiators of arranging with phase array array way.
6. reflector antenna system as claimed in claim 5, it is characterized in that, described primary radiator comprises horn antenna, or Waveguide slot antenna, or microstrip antenna, wherein, described a plurality of primary radiator comprises one or more in described horn antenna, described Waveguide slot antenna, described microstrip antenna.
7. reflector antenna system as claimed in claim 4, it is characterized in that, described reflector antenna system also comprises the rear end feeding network with described feed communication connection, and wherein, described rear end feeding network regulates the electromagnetic wave beam of described feed transmitting for realizing.
8. reflector antenna system as claimed in claim 7, is characterized in that, described rear end feeding network comprises the radio circuit consisting of phase shifter, amplifier.
9. reflector antenna system as claimed in claim 4, is characterized in that, described reflector antenna system also comprises structural connection, for connecting described super plate of material and described feed.
10. a reflection of electromagnetic wave control method, is characterized in that, comprising:
In reflector antenna system in as claim 4-9 as described in any one, according to the rule of feed emitting electromagnetic wave, obtain the PHASE DISTRIBUTION that electromagnetic wave arrives super plate of material surface;
Regulate size and the spacing in the hole in super plate of material, the electromagnetic outgoing phase place that described super plate of material surface reflection goes out is equated.
11. reflection of electromagnetic wave control methods as claimed in claim 10, is characterized in that, described method also comprises: emulation in advance obtains the hole of various sizes and spacing to the electromagnetic reflection compensation phase place of different frequency Arg(S11), generate hole data storehouse;
Wherein, the size in the hole in the super plate of material of described adjusting and spacing specifically comprise the equal step of electromagnetic outgoing phase place that described super plate of material surface reflection goes out:
According to described electromagnetic wave, arrive the phase place on described super plate of material surface
and the electromagnetic wave outgoing phase place that obtains of expectation
calculating meets relational expression
reflection compensation phase place;
According to the described reflection compensation phase place calculating, in described hole data storehouse, search size and the spacing in corresponding hole;
In described super plate of material, offer the hole of corresponding size and spacing.
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| CN104466406A (en) * | 2014-12-10 | 2015-03-25 | 上海交通大学 | Plasma-based electric phase modulation surface antenna |
| CN104979642A (en) * | 2014-04-02 | 2015-10-14 | 启碁科技股份有限公司 | Multi-band antenna and multi-band antenna configuration method |
| CN105162489A (en) * | 2015-08-24 | 2015-12-16 | 联想(北京)有限公司 | Communication equipment |
| CN105552556A (en) * | 2015-12-28 | 2016-05-04 | 西安电子科技大学 | Orbital angular momentum vortex wave beam generation apparatus and method |
| CN105680162A (en) * | 2016-01-19 | 2016-06-15 | 西安电子科技大学 | Method for generating multiple orbital angular momentum beams |
| CN106249057A (en) * | 2016-07-28 | 2016-12-21 | 西安空间无线电技术研究所 | A kind of large-scale around focus rotation beam scanning antennas radiation characteristic equivalent detecting method |
| CN109633619A (en) * | 2019-01-08 | 2019-04-16 | 湖南赛博诺格电子科技有限公司 | A kind of radar system based on information Super-material antenna |
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| CN104979642B (en) * | 2014-04-02 | 2018-01-09 | 启碁科技股份有限公司 | Multifrequency antenna and multifrequency antenna collocation method |
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| CN109633619A (en) * | 2019-01-08 | 2019-04-16 | 湖南赛博诺格电子科技有限公司 | A kind of radar system based on information Super-material antenna |
| CN109904939A (en) * | 2019-04-11 | 2019-06-18 | 清华大学 | Tracing type wireless charging device and method |
| CN109904939B (en) * | 2019-04-11 | 2020-08-25 | 清华大学 | Tracking type wireless charging device and method |
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Application publication date: 20140219 |