CN2796140Y - High-order microwave composite functional material antenna of regular cell structure as square - Google Patents
High-order microwave composite functional material antenna of regular cell structure as square Download PDFInfo
- Publication number
- CN2796140Y CN2796140Y CNU200520041662XU CN200520041662U CN2796140Y CN 2796140 Y CN2796140 Y CN 2796140Y CN U200520041662X U CNU200520041662X U CN U200520041662XU CN 200520041662 U CN200520041662 U CN 200520041662U CN 2796140 Y CN2796140 Y CN 2796140Y
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- single cell
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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-order microwave composite functional material antenna of regular cell structure as square. The high-order microwave composite functional material can adopt high dielectric microwave ceramic material with composition of Sr<1-x>Ba<x>TiO<3>(X=0.05 - 0.95) which is provided with periodical electromagnetic band gap structure on the surface. The electromagnetic forbidden band structure is a planar structure which is composed by multiple square single cells. The boundary of single cells is provided with four blank bars parallel to the four edges of the single cell. The middle part of the single cell is provided with two orthogonal, interconnected and completely alternated square wave skip bands. Each end of the skip band connects with middle parts of two blank bars respectively. Other parts except blank bars and skip band of the single cell structure are conduction blocks. The utility model ensures higher radiation efficiency and increases profits through the antenna manufactured combining of periodical electromagnetic forbidden band structure, at the same time, it realizes miniaturization. It has broad application outlook in radio communication field such as GPS (f=1.575 GHz), 2G PCS (f=1.8 GHz), 3G PCS (f=1.7 - 2.1 GHz), 802.11 Bluetooth communication (f=2.4 - 2.5 GHz)and 802.16 WIMAX (f=3.4 - 3.53 GHz), etc.
Description
Technical field
It is foursquare antenna made of high dielectric microwave composite material that the utility model relates to a kind of single cell structure.
Background technology
The develop rapidly of the communication technology improves day by day to the miniaturization of communication device, the requirement of integrated level.Have high-k, high thermal stability, low-loss microwave ceramic material are because of satisfying the requirement of communication components and parts miniaturization and integrated level, and the application in various communication components and parts is more and more wider.Electromagnetic forbidden band structural material (Electromagnetic Bandgap, (EBG)), claim forbidden photon band material (Phototic Bandgap again, PBG) or photonic crystal, be new ideas and the new material that proposes later 1980s, it is to introduce the novel composite functional material that artificial periodic structure forms by periodic arrangement or in conventional dielectric material by the material of differing dielectric constant.Because the existence of periodic electromagnetism bandgap structure can not be propagated electromagnetic wave in a certain specific frequency forbidden band.In the high dielectric microwave ceramic material, introduce the photonic crystal technology, when guaranteeing that components and parts miniaturization and integrated level require, can improve the deficiency of existing efficient of high dielectric material microwave component and bandwidth aspect greatly, promote the quality of product comprehensively.As for antenna, can improve its gain greatly, radiation efficiency and bandwidth; Can improve its bandwidth and Frequency Response to filter; For resonator, can improve its Q value (quality factor).In a word, we adopt this novel high Jie's composite functional material of high dielectric microwave ceramic material and photonic crystal technological development, have wide practical use in the modern communication technology that requirements such as product miniaturization, integrated level, communication bandwidth and gain are improved day by day.
Component is Sr
1-xBa
xTiO
3The high dielectric microwave ceramic material of (X=0.05～0.95) is a common ferroelectric material, and it can be by standard ceramic preparation technology preparation.Its relative dielectric constant is 200～1200, loss angle tan δ=10
-2～10
-3And the value of its dielectric constant can be by regulating strontium barium ratio value X and change significantly, this material Gao Jie, low-loss these characteristics make it at phase shifter, have obtained extensive use in the microwave devices such as variodenser.But for antenna applications, along with the raising of dielectric constant, the surface wave loss constantly increases, the radiation efficiency of antenna also worse and worse, and bandwidth is also narrow, therefore this material is difficult to use in antenna.
Summary of the invention
The purpose of this utility model is to provide the antenna made of high dielectric microwave composite material of a kind of miniaturization, high integration, the characteristic of utilizing the periodic electromagnetism bandgap structure that electromagnetic wave can not be propagated in a certain specific frequency forbidden band makes the high dielectric microwave composite functional material can give full play to its high dielectric property.
For reaching above-mentioned purpose, the utility model adopts following technical scheme,
A kind of single cell structure is foursquare antenna made of high dielectric microwave composite material, and it is Sr that described high dielectric microwave composite functional material can adopt component
1-xBa
xTiO
3The high dielectric microwave ceramic material of (X=0.05～0.95), be provided with the periodic electromagnetism bandgap structure on its surface, the high dielectric microwave composite functional material of this band periodic electromagnetism bandgap structure both can be used as the baseplate material of various antennas, and the radiation medium that also can make antenna simultaneously uses.
In the utility model, the periodic electromagnetism forbidden band structure of ceramic surface can adopt standard photolithography process preparation or chemical plating method preparation.Metal can be selected copper, silver, aluminium, gold etc. for use.
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.
The utility model when realizing miniaturization, guarantees to have the higher width of cloth to penetrate efficient and gain by combine the antenna made from the periodic electromagnetism forbidden band structure.In GPS (frequency f=1.575GHz), (frequency f=1.8GHz), (((wireless communication field such as frequency f=3.4～3.53GHz) is with a wide range of applications 3G PCS 2G PCS for frequency f=2.4～2.5GHz) and 802.16WIMAX for frequency f=1.7～2.1GHz), 802.11 Bluetooth communications.
Description of drawings
Fig. 1 is an embodiment electromagnetic bandgap structure schematic diagram
Embodiment
A kind of single cell structure is foursquare antenna made of high dielectric microwave composite material, and it is Sr that described high dielectric microwave composite functional material adopts component
1-xBa
xTiO
3The high dielectric microwave ceramic material.With this high dielectric microwave ceramic material is medium, and at this dielectric surface manufacturing cycle electromagnetic bandgap structure, electromagnetic bandgap structure can adopt materials such as metallic copper, silver, aluminium or gold among the figure by standard photolithography process or chemical plating method.
As shown in Figure 1, 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.
By the size of physical dimension in the unit cell among the adjusting figure, realize the forbidden band frequency and the width of regulation and control composite functional material.
Claims (1)
1, a kind of single cell structure is foursquare antenna made of high dielectric microwave composite material, comprise that the surface is provided with the dielectric-slab of periodic electromagnetism bandgap structure, 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.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU200520041662XU CN2796140Y (en) | 2005-05-19 | 2005-05-19 | High-order microwave composite functional material antenna of regular cell structure as square |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU200520041662XU CN2796140Y (en) | 2005-05-19 | 2005-05-19 | High-order microwave composite functional material antenna of regular cell structure as square |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2796140Y true CN2796140Y (en) | 2006-07-12 |
Family
ID=36813887
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU200520041662XU Expired - Fee Related CN2796140Y (en) | 2005-05-19 | 2005-05-19 | High-order microwave composite functional material antenna of regular cell structure as square |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2796140Y (en) |
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2005
- 2005-05-19 CN CNU200520041662XU patent/CN2796140Y/en not_active Expired - Fee Related
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Legal Events
| 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 |