CN207098039U - Propagating Tree cross composite fractal antenna - Google Patents
Propagating Tree cross composite fractal antenna Download PDFInfo
- Publication number
- CN207098039U CN207098039U CN201720226352.8U CN201720226352U CN207098039U CN 207098039 U CN207098039 U CN 207098039U CN 201720226352 U CN201720226352 U CN 201720226352U CN 207098039 U CN207098039 U CN 207098039U
- Authority
- CN
- China
- Prior art keywords
- fractal
- propagating tree
- propagating
- cross
- antenna
- 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.)
- Active
Links
Abstract
A kind of Propagating Tree cross composite fractal antenna is the utility model is related to, it includes substrate and is covered in the radiation patch of substrate front side；The radiation patch is Propagating Tree cross composite fractal structure；The Propagating Tree cross composite fractal structure uses Propagating Tree fractal structure as basic structure, and the small square-shaped metal region inside basic structure is substituted with cross fractal structure.The purpose of this utility model be to provide a kind of size is small, the return loss minimum value in working band is less than 20dB, can be completely covered the 5th third-generation mobile communication three candidate's frequency ranges Propagating Tree cross composite fractal antenna.
Description
Technical field
It the utility model is related to a kind of Propagating Tree-cross composite fractal antenna.
Background technology
Nowadays, mobile communication technology is constantly updated at an unprecedented rate in made rapid progress, GSM
Regenerate.5th Generation Mobile Communication System will come into operation before and after the year two thousand twenty, and it is in spectrum width, data transmission bauds etc.
There is larger advantage, can meet the needs of mobile data flow rapid growth in coming 10 years.2015, international telecommunication
Alliance determines that three candidate's frequency ranges of the 5th third-generation mobile communication are：3.300~3.400GHz, 4.400~4.500GHz and
4.800~4.990GHz.
The antenna that can launch and receive mobile communication wireless signal is the important component of GSM, antenna
Performance have considerable influence to the overall performance of GSM.Performance requirement of 5th Generation Mobile Communication System to antenna
It is：Size is sufficiently small, can put mobile terminal into；Radiance is good, working band internal antenna return loss minimum value be less than-
20dB；Bandwidth of operation is big, antenna operating band need cover the 5th third-generation mobile communication three candidate's frequency ranges 3.300~
3.400GHz, 4.400~4.500GHz and 4.800~4.990GHz.
The content of the invention
The purpose of this utility model be to provide a kind of size is small, the return loss minimum value in working band be less than-
20dB, can be completely covered the 5th third-generation mobile communication three candidate's frequency ranges Propagating Tree-cross composite fractal antenna.
The purpose of this utility model is achieved through the following technical solutions：A kind of Propagating Tree-cross composite fractal antenna, it is wrapped
Include substrate and be covered in the radiation patch of substrate front side；The radiation patch is Propagating Tree-cross composite fractal structure；It is described
Propagating Tree-cross composite fractal structure uses Propagating Tree fractal structure as basic structure, the small square inside basic structure
Metallic region is substituted with cross fractal structure；The Propagating Tree fractal structure that the Propagating Tree-cross composite fractal structure uses is
At least structure of 3 ranks；The cross fractal structure that the Propagating Tree-cross composite fractal structure uses is the structure of at least 2 ranks；
In the iterative process of Propagating Tree fractal structure, its prototype structure is dipole antenna；Using two dipole arms as " trunk ",
Its top respectively grows two perpendicular to dipole arm, " branch " that length is dipole arm half, forms 1 rank Propagating Tree and divides shape
Structure；It is " branch " respectively to grow two perpendicular to " branch ", length on 4 " branch " tops of 1 rank Propagating Tree fractal structure
" twig " of half, form 2 rank Propagating Tree fractal structures；In 8 each lifes in " twig " top of 2 rank Propagating Tree fractal structures
Two are grown perpendicular to " twig ", " the micro- branch " that length is " twig " half, forms 3 rank Propagating Tree fractal structures.
Preferably, the Propagating Tree-cross composite fractal structure uses the Propagating Tree fractal structure of at least 3 ranks.
Preferably, the Propagating Tree-cross composite fractal structure uses the cross fractal structure of at least 2 ranks.
Preferably, open gap is offered in the vertical symmetrical center line of the radiation patch, in the both sides of open gap
It is respectively provided with an antenna feed point.
Preferably, the substrate is low-loss microwave ceramics substrate, and its relative dielectric constant is 5~8.
Preferably, the substrate is shaped as rectangle, and size is 22mm ± 1mm × 22mm ± 1mm, thickness be 0.5mm~
1mm。
Preferably, the Propagating Tree-cross composite fractal radiation patch overall size be 20mm ± 0.1mm × 11mm ±
0.1mm。
Preferably, the material of the aerial radiation paster is copper, silver, gold or aluminium.
For prior art, the utility model has the advantage of：Existing fractal antenna is monomer fractal structure, only
The outer edge for having antenna is folded according to a kind of fractal iteration mode, and inner antenna space has no carry out fractal iteration, day
The self-similarity of line is confined near edge curve.And Propagating Tree-cross composite fractal structure of the utility model design will be raw
Long tree fractal structure and cross fractal structure are combined, and the edge curve and internal structure of antenna all have self-similarity, radio frequency
Electric current more can uniformly be distributed in whole composite fractal radiation patch, and antenna has larger bandwidth of operation, completely
It disclosure satisfy that performance requirement of the 5th Generation Mobile Communication System to antenna.
Brief description of the drawings
Fig. 1 is 0 rank Propagating Tree fractal structure.
Fig. 2 is 1 rank Propagating Tree fractal structure.
Fig. 3 is 2 rank Propagating Tree fractal structures.
Fig. 4 is 3 rank Propagating Tree fractal structures.
Fig. 5 is 0 rank cross fractal structure.
Fig. 6 is 1 rank cross fractal structure.
Fig. 7 is 2 rank cross fractal structures.
Fig. 8 is a kind of structural representation of embodiment of the utility model radiation patch.
Fig. 9 is the return loss (S of embodiment illustrated in fig. 811) performance map, the abscissa in figure represents frequency Frequency
(GHz), ordinate represents return loss intensity (The return loss of the antenna (dB)).
Label declaration：1 substrate, 2 radiation patch, 3 open gaps.
Embodiment
The utility model content is described in detail with reference to Figure of description and embodiment：
A kind of Propagating Tree-cross composite fractal antenna, it includes substrate and is covered in the radiation patch of substrate front side；Institute
It is Propagating Tree-cross composite fractal structure to state radiation patch；The Propagating Tree-cross composite fractal structure divides shape using Propagating Tree
As basic structure, the small square-shaped metal region inside basic structure is substituted structure with cross fractal structure；The Propagating Tree-
The Propagating Tree fractal structure that cross composite fractal structure uses is the structure of at least 3 ranks；The Propagating Tree-cross composite fractal
The cross fractal structure that structure uses is the structure of at least 2 ranks.
Fig. 1 to Fig. 4 is the iterative process schematic diagram of Propagating Tree fractal structure.In the iterative process of Propagating Tree fractal structure
In, its prototype structure is dipole antenna；Using two dipole arms as " trunk ", respectively grown on its top two perpendicular to
Dipole arm, " branch " that length is dipole arm half, form 1 rank Propagating Tree fractal structure；In 1 rank Propagating Tree fractal structure
4 " branch " tops respectively grow two perpendicular to " branch ", length be " branch " half " twig ", form 2 ranks life
Long tree fractal structure；Respectively grown on 8 " twig " tops of 2 rank Propagating Tree fractal structures two perpendicular to " twig ",
Length is " micro- branch " of " twig " half, forms 3 rank Propagating Tree fractal structures.Continue iteration according to the method, then may be used
Obtain high-order Propagating Tree fractal structure.
Fig. 5 to Fig. 7 is the iterative process schematic diagram of cross fractal structure.In the iterative process of cross fractal structure, its
Prototype structure is square；Prototype structure is divided into 3 row, 3 row, 9 small squares, by the upper left corner, the lower left corner, the upper right corner, the right side
Four small squares of inferior horn are cut out, and are left the square area of 5 deciles, are then obtained 1 rank cross fractal structure；By 1 rank cross
5 square areas of fractal structure do cross fractal iteration again respectively, then obtain 2 rank cross fractal structures.According to this side
Method continues iteration, then can obtain high-order cross fractal structure.
The Propagating Tree fractal structure of the Propagating Tree-cross composite fractal structure use at least 3 ranks and at least cross of 2 ranks
Fractal structure.
The radiation patch is made up of two symmetrical radiation arms, is offered in the vertical symmetrical center line of two radiation arms
Open gap, an antenna feed point is respectively provided with the both sides of open gap.
The substrate is low-loss microwave ceramics substrate, and its relative dielectric constant is 5~8.The substrate is shaped as square
Shape, size are 22mm ± 1mm × 22mm ± 1mm, and thickness is 0.5mm~1mm.
The Propagating Tree-cross composite fractal radiation patch overall size is 20mm ± 0.1mm × 11mm ± 0.1mm.
The material of the radiation patch is copper, silver, gold or aluminium.
A specific embodiment of the present utility model is given below：
The present embodiment is provided with substrate 1 and is covered in the positive radiation patch 2 of substrate 1, the structure of radiation patch 2 such as Fig. 8 institutes
Show.The utility model embodiment uses the 3 rank Propagating Tree fractal structure conducts that size is 20mm ± 0.1mm × 11mm ± 0.1mm
Basic structure, the small square area that its internal 64 size is 1mm × 1mm is substituted with 2 rank cross fractal structures, constituted
The radiation patch 2 of Propagating Tree-cross composite fractal structure.
Open gap 3 is offered in the vertical symmetrical center line of the radiation patch 2, is respectively set in the both sides of open gap 3
There is an antenna feed point.
Substrate 1 is low-loss microwave ceramics substrate, and its relative dielectric constant is 5~8.Substrate 1 is shaped as rectangle, size
It is 22mm ± 1mm × 22mm ± 1mm, thickness is 0.5mm~1mm.
From fig. 9, it can be seen that measured result shows that the operating center frequency of this antenna is 4.01GHz, Antenna Operation is frequently
Band scope is 3.233~5.257GHz, bandwidth of operation 2.024GHz, all low in whole working band internal antenna return loss
In -10dB, return loss minimum value is -43.19dB.Measured result shows, this antenna completely covers 3.300~
Candidate's frequency range of these three the 5th third-generation mobile communications of 3.400GHz, 4.400~4.500GHz and 4.800~4.990GHz.
The utility model has the advantages of following prominent and significant effect：Antenna size is small, thickness is low, includes medium base
Antenna overall dimensions including plate are only 22mm × 22mm × 0.5mm, and the antenna belongs to ultrathin antenna, can be put into various small-sized
Mobile communication equipment in；Antenna radiation performance is good, and working band internal antenna return loss minimum value reaches -43.19dB, is better than
Conventional design requirement of the working band internal antenna return loss minimum value less than -20 dB；Antenna Operation bandwidth reaches
2.024GHz, not only completely covers three candidate's frequency ranges of the 5th third-generation mobile communication, and have larger performance redundancy.Therefore,
The utility model antenna performance is excellent, is had broad application prospects in the 5th Generation Mobile Communication System.
Claims (7)
- A kind of 1. Propagating Tree-cross composite fractal antenna, it is characterised in that：It includes substrate and is covered in the spoke of substrate front side Penetrate paster；The radiation patch is Propagating Tree-cross composite fractal structure；The Propagating Tree-cross composite fractal structure uses As basic structure, the small square-shaped metal region inside basic structure is substituted Propagating Tree fractal structure with cross fractal structure； The Propagating Tree fractal structure that the Propagating Tree-cross composite fractal structure uses is the structure of at least 3 ranks；The Propagating Tree-ten The cross fractal structure that word composite fractal structure uses is the structure of at least 2 ranks；In the iterative process of Propagating Tree fractal structure, Its prototype structure is dipole antenna；Using two dipole arms as " trunk ", two are respectively grown on its top perpendicular to idol Extremely sub- arm, " branch " that length is dipole arm half, form 1 rank Propagating Tree fractal structure；In 1 rank Propagating Tree fractal structure 4 " branch " tops respectively grow two perpendicular to " branch ", " twig " that length is " branch " half, form the growth of 2 ranks Set fractal structure；Two are respectively grown on 8 " twig " tops of 2 rank Propagating Tree fractal structures perpendicular to " twig ", length " the micro- branch " for " twig " half is spent, forms 3 rank Propagating Tree fractal structures.
- 2. Propagating Tree according to claim 1-cross composite fractal antenna, it is characterised in that：The radiation patch is erected Open gap is offered on to symmetrical center line, an antenna feed point is respectively provided with the both sides of open gap.
- 3. Propagating Tree according to claim 1-cross composite fractal antenna, it is characterised in that：The substrate is low-loss Microwave ceramics substrate.
- 4. Propagating Tree according to claim 3-cross composite fractal antenna, it is characterised in that：The microwave ceramics substrate Relative dielectric constant be 5~8.
- 5. Propagating Tree-cross composite fractal antenna according to claim 1-4 any one, it is characterised in that：The base Plate is shaped as rectangle, and size is 22mm ± 1mm × 22mm ± 1mm, and thickness is 0.5mm~1mm.
- 6. Propagating Tree-cross composite fractal antenna according to claim 1-4 any one, it is characterised in that：The life Long tree-cross composite fractal radiation patch overall size is 20mm ± 0.1mm × 11mm ± 0.1mm.
- 7. Propagating Tree-cross composite fractal antenna according to claim 1-4 any one, it is characterised in that：The spoke The material for penetrating paster is copper, silver, gold or aluminium.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720226352.8U CN207098039U (en) | 2017-03-09 | 2017-03-09 | Propagating Tree cross composite fractal antenna |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720226352.8U CN207098039U (en) | 2017-03-09 | 2017-03-09 | Propagating Tree cross composite fractal antenna |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207098039U true CN207098039U (en) | 2018-03-13 |
Family
ID=61549507
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720226352.8U Active CN207098039U (en) | 2017-03-09 | 2017-03-09 | Propagating Tree cross composite fractal antenna |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207098039U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106876880A (en) * | 2017-03-09 | 2017-06-20 | 厦门大学嘉庚学院 | Propagating Tree cross composite fractal antenna |
| CN110649393A (en) * | 2019-09-29 | 2020-01-03 | 厦门大学嘉庚学院 | Tree-shaped growth type array ultra-wideband antenna |
-
2017
- 2017-03-09 CN CN201720226352.8U patent/CN207098039U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106876880A (en) * | 2017-03-09 | 2017-06-20 | 厦门大学嘉庚学院 | Propagating Tree cross composite fractal antenna |
| CN110649393A (en) * | 2019-09-29 | 2020-01-03 | 厦门大学嘉庚学院 | Tree-shaped growth type array ultra-wideband antenna |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Haraz et al. | Design of a 28/38 GHz dual-band printed slot antenna for the future 5G mobile communication Networks | |
| CN105161847B (en) | Wide band high-gain circular polarized antenna | |
| CN110048228A (en) | One type Sierpinski fractal ultra wide band antenna | |
| CN106898873A (en) | A kind of Fractal array composite helical antenna | |
| CN205595445U (en) | Compound fractal mobile communication antenna of cantor - ming kefusiji | |
| CN207098039U (en) | Propagating Tree cross composite fractal antenna | |
| CN104681995A (en) | Microstrip antenna based on Sierpinski carpet fractal structure | |
| CN106911009B (en) | Photonic crystal fractal array antenna for mobile communication | |
| CN209461638U (en) | A kind of broadband double frequency 5G antenna of feed microstrip line | |
| CN105680171B (en) | All-around top absorbing antenna with broadband split pole trap characteristic | |
| CN203103501U (en) | Concentric dual-circle-shaped microstrip antenna | |
| CN106876880A (en) | Propagating Tree cross composite fractal antenna | |
| CN208078165U (en) | The compound ultra-wide band antenna structure of hexagonal array based on Xie Erbinsi matrix components | |
| CN206180107U (en) | Cross -shaped structure compound fractal antenna of xie erbinsiji | |
| CN109546345A (en) | A kind of miniature ultra wide band hexagonal antenna dividing shape based on kock | |
| CN103311663A (en) | Higher-order improved dendriform fractal ultra-wideband trapped wave antenna with load hole | |
| CN102280702A (en) | Very broadband multiterminal feed printing one pole antenna | |
| CN205211954U (en) | Filtering antenna that can restrain high frequency harmonic | |
| CN104022343B (en) | Multiband aerial | |
| CN204067574U (en) | A kind of Compact type broadband octangle slot antenna | |
| CN205264858U (en) | Compound fractal mobile communication antenna of xie erbinsiji - hilbert | |
| CN205646143U (en) | Triple compound fractal mobile communication antenna | |
| CN204834853U (en) | High bandwidth planar antenna | |
| CN209045760U (en) | A kind of cross-shaped patch antenna | |
| CN106898872A (en) | A kind of composite fractal ultra-wideband antenna |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |