CN101505001A - Tree shaped microstrip antenna - Google Patents
Tree shaped microstrip antenna Download PDFInfo
- Publication number
- CN101505001A CN101505001A CNA2009100585048A CN200910058504A CN101505001A CN 101505001 A CN101505001 A CN 101505001A CN A2009100585048 A CNA2009100585048 A CN A2009100585048A CN 200910058504 A CN200910058504 A CN 200910058504A CN 101505001 A CN101505001 A CN 101505001A
- Authority
- CN
- China
- Prior art keywords
- antenna
- trunk
- tree
- circuit board
- printed circuit
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Landscapes
- Details Of Aerials (AREA)
- Waveguide Aerials (AREA)
Abstract
The invention discloses a dendriform microstrip antenna which is characterized in that the antenna is manufactured on a printed circuit board by printing technology; the printed circuit board consists of a feeding and radiation unit (1), a medium layer (2) and a metal stratum (3); the feeding and radiation unit (1) of the antenna consists of a trunk (4) and a plurality of branches (6); the trunk is an antenna feeding unit and adopts a microstrip transmission line structure; one end of the trunk is positioned at the edge of the printed circuit board; the end is a feeding port of the antenna; the trunk comprises an impedance transition section (5) to realize the impedance matching of the antenna; a plurality of the branches grow out from the impedance transition section (5) of the trunk; the branches form the radiation unit of the antenna; the branch has any extension angle and length; the medium layer (2) is arranged between the metal stratum (3) and the radiation unit (1); and the metal stratum and the corresponding part of the trunk are coated with the metal layer. The dendriform microstrip antenna has the advantages of broadband, simple manufacture and low cost.
Description
Technical field
The present invention relates to a kind of tree-shaped microstrip antenna, belong to the field of antenna in the wireless device.
Background technology
Antenna is the critical component in the wireless device, and it is bearing the effect of power conversion function and directed radiation or reception, directly determines the efficient of electromagnetic energy in the space transmission, influences whole wireless system work effect.Flourish along with the mobile communication cause proposed many special and requirements harshness to antenna performance.For example in wireless communication system, require antenna will possess broadband, structure miniaturization, processing and fabricating simple in structure, easily in enormous quantities and performance such as with low cost simultaneously.Traditional antenna type is difficult to satisfy simultaneously above-mentioned all properties requirement.
Tree is a large amount of class plants that exist of nature, inspired by its form, and Antenna Design person have designed tree-shaped antenna, have obtained some achievements at aspects such as antenna broadband, miniaturizations:
1. based on the fractal tree antenna of fractal theory development, comprise multiclass such as the fractal tree antenna of y-bend, the fractal tree antenna of trident, three-dimensional fractal tree, existing metal wire antenna structure also has microstrip structure.Utilize fractal theory to design fractal tree antenna, its structure comparison rule, structural parameters are less, so the Antenna Design difficulty that reduces, but its structure degree of freedom is not high, has certain topical type on antenna performance improves.
2. Antenna Design person adopts the metal wire antenna structure, has designed the tree-shaped antenna that the three-dimensional structure degree of freedom is arranged.But antenna processing relates to metal machining, the three-dimensional structure degree of freedom cause difficult processing with exactly to the location of the branch in the tree-shaped antenna, so difficulty of processing is big, is unfavorable for tree-shaped antenna wide popularization and application in engineering.
Tree-shaped antenna has more research report, as: " IEEE TRANSACTIONS ON ANTENNAS ANDPROPAGATION " the 8th phases 25 volume (2004) paper " Miniature Reconfigurable Three-Dimensional FractalTree Antennas " has reduced the fractal tree antenna structure of three-dimensional monopole size by the method that terminal point loads; " ELECTRONICS LETTERS " the 25th phases 32 volume (2008) paper " Multiband properties of a fractal treeantenna generated by electrochemical deposition " utilizes the electro-deposition technology to realize a kind of fractal tree antenna of multiband of two dimension; " IEEE TRANSACTIONS ON ANTENNAS AND PROPAGATION " the 4th phases 55 volume (2008) paper " Study of an Electrochemically-Deposited 3-DRandom Fractal Tree-MonopoleAntenna " utilizes the electro-deposition technology to realize the fractal tree antenna of three-dimensional multiband.(MIT has adopted genetic Algorithm Design in Sep.1997) and has adopted the tree-shaped antenna of metal wire antenna structure D.S.Linden at its doctor's thesis " Automated Design and Optimization of Wire Antennas using Genetic Algorithms ".But the antenna processing and manufacturing difficulty is big, not wide popularization and application in engineering.
Summary of the invention
The objective of the invention is provides a kind of novel tree-like microstrip antenna at the deficiencies in the prior art.Be characterized in adopting microstrip structure and printing technology to make the tree-shaped antenna of two-dimension plane structure.
The object of the invention is realized by following technical measures:
Tree-shaped microstrip antenna
Tree-shaped microstrip antenna adopt printing technology be produced on a printed circuit board (Printed Circuit Board, PCB) on; Printed circuit board (PCB) is made of feed and radiating element layer, dielectric layer and metal stratum; The feed of antenna and radiating element layer are made up of trunk and some branches; Trunk is the antenna feed unit, adopts microstrip transmission line structure, and an end of trunk is positioned at the edge of pcb board, this end is an antenna current feed port, trunk comprises one section transformer section, and the gradual change of this section metal line-width realizes Antenna Impedance Matching to realize the antenna feed impedance conversion; Grow some branches from the impedance transition mechanism section of trunk, branch is formed the radiating element of antenna, and branch can have and extends angle and length arbitrarily; Be provided with dielectric layer between metal stratum and the radiating element; In the metal stratum with trunk counterpart plating layer, for feed element provides metal ground.
Trunk and branch are that the metal wire of different in width is formed.
Dielectric layer is polytetrafluoroethylene or epoxy resin.
The present invention has following advantage:
1. tree-shaped microstrip antenna adopts printing technology to be made in printed circuit board (PCB), does not need metal machining.Have the machining accuracy height, advantage such as with low cost and in light weight, simultaneously process time short, help producing in enormous quantities.
2. tree-shaped microstrip antenna is a two-dimension plane structure, branch has development length and angle arbitrarily in the radiating element, the overall structure degree of freedom is big, can provide more utilized structural parameters for Antenna Design, so that realize good radiances such as broadband, miniaturization.
Description of drawings
Fig. 1 is the end view of tree-shaped microstrip antenna three-decker
Fig. 2 is tree-shaped microstrip antenna feed and radiating element layer front view
Fig. 3 is a tree-shaped microstrip antenna metal stratum front view
Fig. 4 is the feed port reflection coefficient test curve of tree-shaped microstrip antenna
1. feed and radiating element layer, 2. dielectric layer, 3. metal stratum, 4. trunk, 5. impedance transition mechanism section 6. branches of trunk
Embodiment
Below by embodiment the present invention is carried out concrete description, be necessary to be pointed out that at this present embodiment only is used for invention is further specified, can not be interpreted as limiting the scope of the invention.The person skilled in the art in this field can make some nonessential improvement and adjustment according to the content of the invention described above.
Embodiment:
The overall structure of tree-shaped microstrip antenna is shown in Fig. 1～3, and tree-shaped microstrip antenna is printed on the printed circuit board.This printed circuit board (PCB) is divided into the double layer of metal overlay: i.e. radiating element layer 1 and metal stratum 3 and one deck dielectric layer 2, and the dielectric layer of printed circuit board (PCB) is a polytetrafluoroethylmaterial material, and relative dielectric constant is 2.65, and thickness is 1mm.
The structural parameters of tree-shaped microstrip antenna obtain by tree growth competition algorithm (optimized Algorithm of tree growth course in a kind of simulating nature circle).Optimizing the structural parameters that obtain is:
At the radiating element layer, trunk 4 comprises that a segment length is 5mm, and width is the transmission line section of 2.842mm, and characteristic impedance is 50 ohm, and connecting a segment length again is 29.77mm, and width is faded to the impedance transition mechanism section of 0.6243mm by 2.842mm.The trunk of being made up of transmission line section and impedance transition mechanism section has constituted the feed element of tree-shaped microstrip antenna.Branch as antenna radiation unit has comprised 12 branches altogether, and its broadband is 0.6243mm, and the coordinate parameters of branch position is detailed to be shown in Table 1.
On the metal stratum, with as the corresponding part of the trunk of antenna feed unit coated metal, as the metal ground of feed element.The width on metal ground is consistent with the dielectric-slab width, and length is trunk length, i.e. 34.77mm.
According to the said structure parameter, processing and fabricating antenna model and carried out performance test.Test result sees for details shown in Figure 4, the result show the S11 of this tree-shaped microstrip antenna＜-the 10dB frequency range from 2.45GHz to 4.45GHz, reached 56.73%, show that this antenna has the impedance bandwidth of non-constant width, promptly possesses the ultra broadband service behaviour.
Table 1: the coordinate parameters of the branch position of tree-shaped microstrip antenna
Claims (3)
1. tree-shaped microstrip antenna, it is characterized in that this antenna adopts printing technology to be produced on the printed circuit board, printed circuit board (PCB) is made of with dielectric layer (2) and metal stratum (3) feed and radiating element (1), and the feed of antenna and radiating element (1) are made up of trunk (4) and some branches (6); Trunk is the antenna feed unit, adopts microstrip transmission line structure, and an end of trunk is positioned at the edge of printed circuit board (PCB), and this end is the feed port of antenna, comprises in the trunk that one section impedance transition mechanism section (5) realizes Antenna Impedance Matching; (5)s grew some branches, and branch is formed the radiating element of antenna, and branch has any extension angle and length from the impedance transition mechanism section of trunk; Be provided with dielectric layer (2) between metal stratum (3) and the radiating element (1); Metal stratum and trunk counterpart plating layer.
2. tree-shaped according to claim 1 microstrip antenna is characterized in that trunk (4) and branch (6) the metal wire composition for different in width.
3. tree-shaped according to claim 1 microstrip antenna is characterized in that dielectric layer (2) is polytetrafluoroethylene or epoxy resin.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2009100585048A CN101505001A (en) | 2009-03-05 | 2009-03-05 | Tree shaped microstrip antenna |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2009100585048A CN101505001A (en) | 2009-03-05 | 2009-03-05 | Tree shaped microstrip antenna |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101505001A true CN101505001A (en) | 2009-08-12 |
Family
ID=40977158
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2009100585048A Pending CN101505001A (en) | 2009-03-05 | 2009-03-05 | Tree shaped microstrip antenna |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101505001A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106299665A (en) * | 2016-09-23 | 2017-01-04 | 厦门大学 | There is the plane trident shape ultra-wideband antenna of trap characteristic |
| CN106785403A (en) * | 2017-01-09 | 2017-05-31 | 成都信息工程大学 | Two-band 5G microstrip antennas |
| CN114914684A (en) * | 2022-07-18 | 2022-08-16 | 长沙盈芯半导体科技有限公司 | A line-divided tree antenna and its design method |
-
2009
- 2009-03-05 CN CNA2009100585048A patent/CN101505001A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106299665A (en) * | 2016-09-23 | 2017-01-04 | 厦门大学 | There is the plane trident shape ultra-wideband antenna of trap characteristic |
| CN106299665B (en) * | 2016-09-23 | 2022-10-28 | 厦门大学 | Planar trident-shaped ultra-wideband antenna with trapped wave characteristic |
| CN106785403A (en) * | 2017-01-09 | 2017-05-31 | 成都信息工程大学 | Two-band 5G microstrip antennas |
| CN114914684A (en) * | 2022-07-18 | 2022-08-16 | 长沙盈芯半导体科技有限公司 | A line-divided tree antenna and its design method |
| CN114914684B (en) * | 2022-07-18 | 2022-10-21 | 长沙盈芯半导体科技有限公司 | A line-divided tree antenna and its design method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102738580B (en) | Ultra-wideband monopole antenna with expanded horizontal plane open circuit section and semi-oval slot | |
| CN203503788U (en) | Microstrip antenna | |
| CN101345343A (en) | Left hand material microstrip antenna with branch shaped structure of X waveband | |
| CN105680172A (en) | Coplanar waveguide feed based wide-band antenna | |
| CN101540435A (en) | S waveband arborization left-handed material microstrip antenna | |
| CN103311663B (en) | Higher-order improved dendriform fractal ultra-wideband trapped wave antenna with load hole | |
| CN101505001A (en) | Tree shaped microstrip antenna | |
| CN104900996A (en) | Ultra wide band monopole antenna with trap characteristic | |
| CN106505309A (en) | Present array antenna in a kind of gap loaded microstrip side | |
| CN112993555B (en) | Sierpinski-like fractal ultra-wideband antenna and design method thereof | |
| CN209344311U (en) | A kind of C-band wide band high-gain microstrip antenna | |
| CN101626110A (en) | Novel C-band microstrip antenna with negative permeability material | |
| CN103414017A (en) | Double dipole directional antenna based on same-phase power divider feeding | |
| CN202662792U (en) | Double-triangle microstrip antenna | |
| CN202905935U (en) | Small high-performance chip antenna | |
| Barapatre et al. | Design of UWB circular monopole antenna with enhanced bandwidth | |
| CN202662811U (en) | Circular slotted dual-frequency microstrip antenna | |
| CN101494314B (en) | Antenna structure | |
| CN112751172B (en) | High-gain directional radiation double-frequency receiving antenna for collecting radio frequency energy | |
| CN204361264U (en) | Double-frequency antenna unit | |
| CN203434282U (en) | Rectangular ring H shape microstrip antenna | |
| CN205069862U (en) | Printing antenna of falling F suitable for bluetooth communication | |
| CN111416199B (en) | Multi-band vehicle-mounted communication antenna | |
| CN209329144U (en) | A kind of miniaturization monopole antenna | |
| CN203398280U (en) | A symmetric spiral double-frequency microstrip antenna |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20090812 |