CN2796142Y - High order microwave composite functional material antenna - Google Patents
High order microwave composite functional material antenna Download PDFInfo
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- CN2796142Y CN2796142Y CNU2005200416672U CN200520041667U CN2796142Y CN 2796142 Y CN2796142 Y CN 2796142Y CN U2005200416672 U CNU2005200416672 U CN U2005200416672U CN 200520041667 U CN200520041667 U CN 200520041667U CN 2796142 Y CN2796142 Y CN 2796142Y
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- antenna
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- high dielectric
- functional material
- composite functional
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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]
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Abstract
The utility model relates to a high dielectric microwave composite functional material antenna which comprises an antenna dielectric plate which is provided with an electromagnetic band gap structure on the surface; a radiating element is also arranged on the top of the middle part of one side of the electromagnetic band gap structure of the antenna dielectric plate. The feeder line mode of the antenna is a coplanar waveguide feeder line mode; the materials of the antenna dielectric plate can be grouped into a Sr< 1-x >, Ba< x > and TiO< 3 >, wherein x is equal to 0.05-0.95. The antenna provided by the utility model has the advantage of small structure size and combines the respective advantages of the electromagnetic band gap structure and the high dielectric microwave material; the produced antenna suppresses the energy loss caused by the surface waves of the high dielectric microwave material and improves the radiation efficiency and the gain of the antenna; moreover, the technical scheme enables radiation ceramic blocks with different dielectric constants can be flexibly selected according to different antenna design requirements.
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 small-sized high dielectric microwave composite functional material.
For reaching above-mentioned purpose, the utility model adopts following technical scheme:
A kind of antenna of high dielectric microwave composite functional material, comprise that the surface is provided with the antenna medium plate of electromagnetic bandgap structure, on the middle part of dielectric-slab electromagnetic bandgap structure one side, also be provided with a radiant element, the feeder line mode of described antenna is a coplanar waveguide feeder line, and described antenna medium panel material is that component is Sr
1-xBa
xTiO
3, wherein X equals 0.05～0.95.
As a kind of optimal way of the present utility model, the feeder line of described antenna extends to medium edge from described radiant element below.
Another optimal way as electromagnetic bandgap structure, 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.
Optimal way again as electromagnetic bandgap structure, 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.
Optimal way again as electromagnetic bandgap structure, 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.
Optimal way again as electromagnetic bandgap structure, 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 are not for linking with the middle part of described bus, are separated by finedraw between adjacent two unit cells and by described wire interconnection.
As a kind of optimal way of radiant element, described radiant element is cylindric radiation ceramic piece, and its dielectric constant is between 8～100.
The utility model is carried the antenna of arch, its physical dimension is little, combine the advantage of electromagnetic bandgap structure and the advantage separately of high dielectric microwave material, the antenna of manufacturing has suppressed the energy loss that causes because of high dielectric microwave material list ground roll, the radiation efficiency and the gain that have improved antenna.In addition, this technical scheme can be selected the radiation ceramic piece of differing dielectric constant flexibly according to different Antenna Design needs.
Description of drawings
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
As shown in Figure 1, a kind of antenna of high dielectric microwave composite functional material, comprise that the surface is provided with the antenna medium plate 1 of electromagnetic bandgap structure 2 and feeder line 4, on the middle part of dielectric-slab electromagnetic bandgap structure one side, also be provided with a radiation ceramic piece 3, its dielectric constant is between 8～100, described feeder mode is a coplanar waveguide feeder line, and described antenna medium panel material is that component is Sr
1-xBa
xTiO
3, wherein X equals 0.05～0.95.The feeder line of described antenna extends to medium edge from described radiant element below.
EBG style in the present embodiment can adopt standard photoetching or chemical plating method preparation.Embodiment one to embodiment four antenna structure as mentioned above, its difference is that the surface is provided with electromagnetic bandgap structure 2, by regulating the size of unit cell physical dimension in the electromagnetic bandgap structure 2, the forbidden band frequency and the width of adjustable composite functional material.Below explanation respectively.
Embodiment one
As shown in Figure 1 and Figure 2, described electromagnetic forbidden band structure 2 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 6 in middle part and being formed by described lead 6 separated four conducting blocks 5, described lead 6 and conducting block 5 are interconnected at unit cell middle part, are separated by finedraw between adjacent two unit cells and by described wire interconnection.Plane electromagnetic forbidden band structure among the figure, its equivalence LC network for distributing, wherein Wan Qu lead 6 is equivalent to inductance and adjacent two big square conducting blocks 5 by the finedraw separation are equivalent to electric capacity.By regulating the size of a, b, w, each physical dimension of s in Fig. 2 unit cell, realize the forbidden band frequency and the width of regulation and control composite functional material.
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 are not for linking with the middle part of described bus, 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, comprise that the surface is provided with the antenna medium plate of electromagnetic bandgap structure, it is characterized in that: also be provided with a radiant element on the middle part of dielectric-slab electromagnetic bandgap structure one side, the feeder line mode of described antenna is a coplanar waveguide feeder line..
2, the antenna of high dielectric microwave composite functional material according to claim 1 is characterized in that: the feeder line of described antenna extends to medium edge from described radiant element below.
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 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.
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 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.
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 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.
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 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 are not for linking with the middle part of described bus, 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 is characterized in that: described radiant element is cylindric radiation ceramic piece.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2005200416672U CN2796142Y (en) | 2005-05-19 | 2005-05-19 | High order microwave composite functional material antenna |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2005200416672U CN2796142Y (en) | 2005-05-19 | 2005-05-19 | High order microwave composite functional material antenna |
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|---|---|
| CN2796142Y true CN2796142Y (en) | 2006-07-12 |
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| CNU2005200416672U Expired - Fee Related CN2796142Y (en) | 2005-05-19 | 2005-05-19 | High order microwave composite functional material antenna |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102013561A (en) * | 2010-09-29 | 2011-04-13 | 西安空间无线电技术研究所 | Surface plasmon polariton enhanced transmission characteristic-based microstrip antenna |
| CN101170213B (en) * | 2007-11-12 | 2011-10-05 | 杭州电子科技大学 | Low profile rear cavity ring gap one-point short circuit round polarization antenna |
| CN101179150B (en) * | 2007-11-12 | 2011-10-05 | 杭州电子科技大学 | Metallized through-hole infinitesimal disturbance based low profile back-cavity circularly polarized antenna |
-
2005
- 2005-05-19 CN CNU2005200416672U patent/CN2796142Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101170213B (en) * | 2007-11-12 | 2011-10-05 | 杭州电子科技大学 | Low profile rear cavity ring gap one-point short circuit round polarization antenna |
| CN101179150B (en) * | 2007-11-12 | 2011-10-05 | 杭州电子科技大学 | Metallized through-hole infinitesimal disturbance based low profile back-cavity circularly polarized antenna |
| CN102013561A (en) * | 2010-09-29 | 2011-04-13 | 西安空间无线电技术研究所 | Surface plasmon polariton enhanced transmission characteristic-based microstrip antenna |
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| Date | Code | Title | Description |
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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 |