CN2821887Y - High dielectric microvave composite function material antenna - Google Patents
High dielectric microvave composite function material antenna Download PDFInfo
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- CN2821887Y CN2821887Y CNU2005200416583U CN200520041658U CN2821887Y CN 2821887 Y CN2821887 Y CN 2821887Y CN U2005200416583 U CNU2005200416583 U CN U2005200416583U CN 200520041658 U CN200520041658 U CN 200520041658U CN 2821887 Y CN2821887 Y CN 2821887Y
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- unit cell
- antenna
- high dielectric
- unit cells
- electromagnetic
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01P—WAVEGUIDES; RESONATORS, LINES, OR OTHER DEVICES OF THE WAVEGUIDE TYPE
- H01P1/00—Auxiliary devices
- H01P1/20—Frequency-selective devices, e.g. filters
- H01P1/2005—Electromagnetic photonic bandgaps [EPB], or photonic bandgaps [PBG]
Abstract
The utility model relates to an antenna made of high dielectric microwave composite function materials. The utility model is orderly provided with a high dielectric ceramic plate and a microwave dielectric plate from top to bottom; the middle part of the upper surface of the high dielectric ceramic plate is provided with a radiation pasting sheet; an electromagnetic band-gap structure is arranged around the radiation pasting sheet; the middle part of the microwave dielectric plate is provided with a gap; a metal ground is arranged around the gap; the lower surface of the microwave dielectric plate is provided with a feed line which extends from the middle part. Owing to the existence of the electromagnetic band-gap structure, energy loss caused by surface wave propagation can be inhibited; the radiation efficiency and the gain of the antenna are improved. Because the technical scheme of the utility model uses five kinds of the small-size electromagnetic band-gap structures, the size under the same frequency is reduced by 30 % to 60% by comparing with a T. Ihob structure under the conditions of the same frequency and the same total body geometric size; the number of usable unit cells is increased, and the number of unit cells is increased. Therefore, the characteristic of an electromagnetic forbidden band structure material for inhibiting electromagnetic wave propagation can be effectively performed.
Description
Technical field
The utility model relates to a kind of antenna, particularly a kind of antenna of high dielectric microwave composite functional material.
Background technology
Antenna, as the requisite key components of mobile product, characteristics such as its radiation efficiency, directivity, bandwidth and impedance matching will produce a very large impact communication products.The antenna for base station aspect, smart antenna (Smart Antenna) becomes current research focus because of improving the availability of frequency spectrum greatly, increasing power system capacity and base station range effectively under the situation that frequency spectrum resource crowds day by day.On portable terminals such as mobile phone, telescopic antenna is because of big, the difficult integrated market of will progressively fading out of its size.Replace will be can be built-in resoant antenna and high-permitivity ceramics antenna.Resoant antenna adopts air to make medium usually, and antenna structure mostly is " shape of falling F ", and its major advantage is that bandwidth is big, cost is low.That the high-permitivity ceramics antenna then has is simple in structure, be easy to processing, be suitable for multiband work and be easy to characteristics such as integrated, has very big development potentiality in the 3G mobile communication.Consider in the following 4G communication the multi-antenna technology (MIMO technology) that adopts, but the requirement to the size of antenna and integration will further improve, even thereby built-in air dielectric antenna commonly used at present be subjected to size restrictions also to be difficult in portable terminal to realize multi-antenna technology.
The further miniaturization of antenna; unavoidably will use high dielectric constant materials; but adopt common high dielectric material can cause the reduction of antenna radiation efficiency usually; one of effective way that solves this contradiction is to introduce artificial periodic electromagnetism bandgap structure (EBG) in common high dielectric material, or adopts the high dielectric material height Jie composite functional material synthetic with the low dielectric material with electromagnetic bandgap structure.In this novel composite functional material, because the existence of periodic electromagnetism bandgap structure can not be propagated electromagnetic wave in a certain specific frequency forbidden band, thereby it can be used as good antenna substrate material and suppresses the energy loss that causes because of surface wave, improves the radiation efficiency and the gain of antenna.And the raising of radiation efficiency will make speech quality higher, and increase the useful life of battery of mobile phone, and the conversation and the stand-by time of mobile phone are longer.Meanwhile, because the backward radiation that causes because of surface wave is suppressed, reduced the infringement (brain be good microwave absorbing material) of mobile phone radiation so greatly to human body.In addition, when this novel composite functional material is used for antenna array or multiaerial system, also can reduce the mutual coupling between the antenna element, strengthen the isolation between the antenna element, the overall dimension of antenna is reduced, thereby be convenient in littler volumetric spaces, realize multi-antenna technology, make portable terminal adopt many antenna scheme to become possibility in following 3G/4G communication.
Summary of the invention
The purpose of this utility model is to provide a kind of antenna of high dielectric microwave composite functional material.
A kind of antenna of high dielectric microwave composite functional material, be followed successively by high-permitivity ceramics plate, microwave-medium plate from top to bottom, described high-permitivity ceramics plate upper surface middle part is provided with radiation card sheet, around the described radiation card sheet is electromagnetic bandgap structure, described microwave-medium plate middle part is provided with the slit, around the described slit is metal ground, and described microwave-medium plate lower surface is provided with the extended feeder line from the middle part.It is Sr that described antenna medium panel material can be selected component for use
1-xBa
xTiO
3Material, wherein X equals 0.05～0.95.
As another kind of optimal way of the present utility model, described feeder line is perpendicular to described slit.
As another optimal way of the present utility model, described electromagnetic forbidden band structure is the planar structure that a plurality of square unit cells are formed, described unit cell is by being arranged at unit cell mutually perpendicular two bending wire in middle part and being formed by four conducting blocks that described conductor separation is opened, described lead and conducting block are interconnected at unit cell middle part, are separated by finedraw between adjacent two unit cells and by described wire interconnection.
As another optimal way of the present utility model, described electromagnetic forbidden band structure is the planar structure that a plurality of square unit cells are formed, described unit cell edge is provided with four blank bars that are parallel to the unit cell four edges, described unit cell middle part is provided with the square waveform blank tape of two orthogonal and interconnected one-periods, the two ends of each described blank tape are communicated with the middle part of two described blank bars respectively, and the part of described single cell structure except that blank bar and blank tape is conducting block.
As another optimal way of the present utility model, described electromagnetic forbidden band structure is the planar structure that a plurality of square unit cells are formed, described unit cell edge is provided with four buss that are parallel to the unit cell four edges, described unit cell middle part is provided with the square waveform conductive strips of two orthogonal and interconnected one-periods, and the two ends of each described conductive strips are communicated with the middle part of two described buss respectively.
As another optimal way of the present utility model, described electromagnetic forbidden band structure is the planar structure that a plurality of regular hexagon unit cells are formed, described unit cell is formed perpendicular to three leads of three groups of parallel opposite side of unit cell with by six conducting blocks that described three conductor separation are opened by being arranged at unit cell middle part, described lead and conducting block are interconnected at unit cell middle part, are separated by finedraw between adjacent two unit cells and by described wire interconnection.
As another optimal way of the present utility model, described electromagnetic forbidden band structure is the planar structure that a plurality of regular hexagon unit cells are formed, described unit cell is formed with six buss that are arranged at three groups of parallel opposite side of described unit cell edge perpendicular to three leads of three groups of parallel opposite side of unit cell by being arranged at the unit cell middle part, described three leads are interconnected at the unit cell middle part, the two ends of each described lead link with the middle part of described bus respectively, are separated by finedraw between adjacent two unit cells and by described wire interconnection.
The existence of electromagnetic bandgap structure around the radiation card sheet can suppress the energy loss that causes because of surface wave propagation, the radiation efficiency and the gain that improve antenna greatly.Because radiation card sheet and electromagnetic bandgap structure are positioned at same surface, can adopt photoetching or PCB technology once-forming, preparation process is greatly simplified, and makes stability in batches, and repeatability greatly improves.In addition, because technical solutions of the utility model have adopted five kinds of undersized electromagnetic bandgap structures, under the measure-alike condition of same frequency and overall geometry, compare with the structure of T.Ihob, size dwindles 30 ~ 60% under the same frequency, available unit cell number increases greatly, and the unit cell number increases, and making electromagnetic forbidden band structural material suppress this characteristic of electromagnetic wave propagation can more effectively bring into play.
Fig. 1 is the utility model embodiment one antenna structure view
Fig. 2 is semi-simple born of the same parents' structural representation of Fig. 1 embodiment one electromagnetic bandgap structure
Fig. 3 is embodiment two electromagnetic bandgap structure schematic diagrames
Fig. 4 is embodiment three electromagnetic bandgap structure schematic diagrames
Fig. 5 is embodiment four electromagnetic bandgap structure schematic diagrames
Fig. 6 is embodiment four electromagnetic bandgap structure unit cell schematic diagrames
Fig. 7 is embodiment five electromagnetic bandgap structure schematic diagrames
Fig. 8 is embodiment five electromagnetic bandgap structure unit cell schematic diagrames
Embodiment
Embodiment one
As shown in Figure 1, a kind of antenna of high dielectric microwave composite functional material, be followed successively by high-permitivity ceramics plate 1, microwave-medium plate 2 from top to bottom, described high-permitivity ceramics plate upper surface middle part is provided with radiation card sheet 5, the copper pool that described radiation card sheet 5 can adopt photoetching to get on, around the described radiation card sheet is electromagnetic bandgap structure 4, described microwave-medium plate middle part is provided with slit 6, around the described slit is metal ground 3, the described metal ground 3 general copper materials that adopt, described microwave-medium plate lower surface is provided with the extended feeder line 7 from the middle part.Described feeder line 7 is perpendicular to described slit 6.
Wherein said antenna medium panel material is that component is Sr
1-xBa
xTiO
3, wherein X equals 0.05～0.95.The dielectric constant that described microwave-medium plate is can adopt polytetrafluoroethylene as this microwave-medium plate between 1～20.
Described electromagnetic forbidden band structure is the planar structure that a plurality of square unit cells are formed, described unit cell is by being arranged at unit cell mutually perpendicular two bending wire 22 in middle part and being formed by described lead 22 separated four conducting blocks 21, described lead 22 and conducting block 21 are interconnected at unit cell middle part, are separated by finedraw between adjacent two unit cells and interconnected by described lead 22.By regulating the size of unit cell a, b, w, each physical dimension of s among Fig. 2, realize the forbidden band frequency and the width of regulation and control composite functional material.The forbidden band frequency and the width principle of embodiment two to four regulation and control composite functional materials are identical.Therefore omit associated description, only indicate electromagnetic forbidden band structure.
Embodiment two
As shown in Figure 3, described electromagnetic forbidden band structure is the planar structure that a plurality of square unit cells are formed, described unit cell edge is provided with four blank bars that are parallel to the unit cell four edges, described unit cell middle part is provided with the square waveform blank tape of two orthogonal and interconnected one-periods, the two ends of each described blank tape are communicated with the middle part of two described blank bars respectively, and the part of described single cell structure except that blank bar and blank tape is conducting block.
Embodiment three
As shown in Figure 4, described electromagnetic forbidden band structure is the planar structure that a plurality of square unit cells are formed, described unit cell edge is provided with four buss that are parallel to the unit cell four edges, described unit cell middle part is provided with the square waveform conductive strips of two orthogonal and interconnected one-periods, and the two ends of each described conductive strips are communicated with the middle part of two described buss respectively.
Embodiment four
As Fig. 5, shown in Figure 6, described electromagnetic forbidden band structure is the planar structure that a plurality of regular hexagon unit cells are formed, described unit cell is formed perpendicular to three leads of three groups of parallel opposite side of unit cell with by six conducting blocks that described three conductor separation are opened by being arranged at unit cell middle part, described lead and conducting block are interconnected at unit cell middle part, are separated by finedraw between adjacent two unit cells and by described wire interconnection.
Embodiment five
As Fig. 7, shown in Figure 8, described electromagnetic forbidden band structure is the planar structure that a plurality of regular hexagon unit cells are formed, described unit cell is formed with six buss that are arranged at three groups of parallel opposite side of described unit cell edge perpendicular to three leads of three groups of parallel opposite side of unit cell by being arranged at the unit cell middle part, described three leads are interconnected at the unit cell middle part, the two ends of each described lead link with the middle part of described bus respectively, are separated by finedraw between adjacent two unit cells and by described wire interconnection.
Claims (7)
1, a kind of antenna of high dielectric microwave composite functional material, be followed successively by high-permitivity ceramics plate, microwave-medium plate from top to bottom, it is characterized in that: described high-permitivity ceramics plate upper surface middle part is provided with radiation card sheet, around the described radiation card sheet is electromagnetic bandgap structure, described microwave-medium plate middle part is provided with the slit, around the described slit is metal ground, and described microwave-medium plate lower surface is provided with the extended feeder line from the middle part.
2, the antenna of high dielectric microwave composite functional material according to claim 1 is characterized in that: described feeder line is perpendicular to described slit.
3, the antenna of high dielectric microwave composite functional material according to claim 1 and 2, it is characterized in that: described electromagnetic forbidden band structure is the planar structure that a plurality of square unit cells are formed, described unit cell is by being arranged at unit cell mutually perpendicular two bending wire in middle part and being formed by four conducting blocks that described conductor separation is opened, described lead and conducting block are interconnected at unit cell middle part, are separated by finedraw between adjacent two unit cells and by described wire interconnection.
4, the antenna of high dielectric microwave composite functional material according to claim 1 and 2, it is characterized in that: described electromagnetic forbidden band structure is the planar structure that a plurality of square unit cells are formed, described unit cell edge is provided with four blank bars that are parallel to the unit cell four edges, described unit cell middle part is provided with the square waveform blank tape of two orthogonal and interconnected one-periods, the two ends of each described blank tape are communicated with the middle part of two described blank bars respectively, and the part of described single cell structure except that blank bar and blank tape is conducting block.
5, the antenna of high dielectric microwave composite functional material according to claim 1 and 2, it is characterized in that: described electromagnetic forbidden band structure is the planar structure that a plurality of square unit cells are formed, described unit cell edge is provided with four buss that are parallel to the unit cell four edges, described unit cell middle part is provided with the square waveform conductive strips of two orthogonal and interconnected one-periods, and the two ends of each described conductive strips are communicated with the middle part of two described buss respectively.
6, the antenna of high dielectric microwave composite functional material according to claim 1 and 2, it is characterized in that: described electromagnetic forbidden band structure is the planar structure that a plurality of regular hexagon unit cells are formed, described unit cell is formed perpendicular to three leads of three groups of parallel opposite side of unit cell with by six conducting blocks that described three conductor separation are opened by being arranged at unit cell middle part, described lead and conducting block are interconnected at unit cell middle part, are separated by finedraw between adjacent two unit cells and by described wire interconnection.
7, the antenna of high dielectric microwave composite functional material according to claim 1 and 2, it is characterized in that: described electromagnetic forbidden band structure is the planar structure that a plurality of regular hexagon unit cells are formed, described unit cell is formed with six buss that are arranged at three groups of parallel opposite side of described unit cell edge perpendicular to three leads of three groups of parallel opposite side of unit cell by being arranged at the unit cell middle part, described three leads are interconnected at the unit cell middle part, the two ends of each described lead link with the middle part of described bus respectively, are separated by finedraw between adjacent two unit cells and by described wire interconnection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2005200416583U CN2821887Y (en) | 2005-05-19 | 2005-05-19 | High dielectric microvave composite function material antenna |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2005200416583U CN2821887Y (en) | 2005-05-19 | 2005-05-19 | High dielectric microvave composite function material antenna |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2821887Y true CN2821887Y (en) | 2006-09-27 |
Family
ID=37018441
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2005200416583U Expired - Fee Related CN2821887Y (en) | 2005-05-19 | 2005-05-19 | High dielectric microvave composite function material antenna |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2821887Y (en) |
-
2005
- 2005-05-19 CN CNU2005200416583U patent/CN2821887Y/en not_active Expired - Fee Related
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |