CN209088063U - A kind of three-dimensional mirror image tree fractal ring dipole ultra-wide band antenna - Google Patents
A kind of three-dimensional mirror image tree fractal ring dipole ultra-wide band antenna Download PDFInfo
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- CN209088063U CN209088063U CN201822051244.9U CN201822051244U CN209088063U CN 209088063 U CN209088063 U CN 209088063U CN 201822051244 U CN201822051244 U CN 201822051244U CN 209088063 U CN209088063 U CN 209088063U
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- fractal ring
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Abstract
The utility model relates to a kind of three-dimensional mirror image tree fractal ring dipole ultra-wide band antennas, the antenna includes three-layer thin-film matrix, it is covered in the positive tree fractal ring dipole induced radiation patch of first layer film matrix, it is covered in the positive tree fractal ring dipole feed radiation patch of second layer film matrix, it is covered in the positive tree fractal ring dipole induced radiation patch of third layer film matrix, it is covered in the barium titanate thin slice at the third layer film matrix back side, it is covered in the permalloy coating at the barium titanate thin slice back side, radianting capacity is strong, stable and reliable working performance, performance redundancy is larger, electromagnetic signal interference around can be effective against, with ultrabroad band working performance, the second generation can be completely covered to the 5th third-generation mobile communication frequency range, radio frequency identification frequency range, ultra-wideband communications frequency range and mobile digital TV frequency range.
Description
Technical field
The utility model relates to a kind of three-dimensional mirror image tree fractal ring dipole ultra-wide band antennas.
Background technique
Wireless communication technique is one of 21 century most important supportive technology, be most widely used at present, technology the most
Mature wireless communication system is mobile communication system, radio-frequency recognition system, ultra-wideband communication system and mobile digital TV system
System, their working frequency range is all located at microwave frequency band, other than working frequency is different, communication terminal that they are used, communication
Agreement, operating mode are all much like, have very big integration potentiality.
It is trend of the times that 21 century wireless communication technique develops that more net unifications are compatible with multiband.If by mobile communication
Mobile phone, radio-frequency identification reader/writer, ultra-wideband communications terminal, mobile digital TV equipment combine, it will be able to be had both
Making and receiving calls, mobile Internet access, read-write radio-frequency identification card, ultra wide band high speed sending and receiving data, watches mobile digital TV at transmitting-receiving short message
The more net in-one intelligent terminals of microwave frequency band of equal multiple functions.China's Generation Mobile Telecommunication System frequency range used at present is GSM system
0.905~0.915 GHz of formula, 0.950~0.960 GHz, 1.710~1.785 GHz, 1.805~1.880 ghz bands；The
3 g mobile communication frequency range is 1.880~1.920 GHz of TD-SCDMA standard, 2.010~2.025 GHz, 2.300~2.400
1.920~1.980 GHz of ghz band and WCDMA standard, 2.110~2.170 ghz bands；Forth generation mobile communication frequency range is
2.570~2.620 ghz band of TD-LTE standard.The 5th third-generation mobile communication that will be come into operation divides there are three candidate frequency range
Not are as follows: 3.300~3.400 GHz, 4.400~4.500 GHz, 4.800~4.990 GHz.There are three main for radio-frequency recognition system
The working frequency range wanted: 0.902~0.928 GHz, 2.400~2.4835 GHz, 5.725~5.875 GHz.Radio ultra wide band system
Working frequency range is 3.100~10.600 GHz.Mobile digital TV system working frequency range is 11.700~12.200 GHz.Microwave
The more net integral terminal antennas of frequency range need to be completely covered above-mentioned all working frequency range, and radianting capacity is strong, and stable working performance can
It leans on, performance redundancy is larger.The more net integral terminal equipment needs of microwave frequency band and mobile communication base station, surpass radio-frequency identification reader/writer
Broadband connections base station, mobile digital TV transmitting-receiving station carry out wireless communication, and will receive the interference of the microwave signal source of multiple frequency ranges,
This requires the more net integral terminal antennas of microwave frequency band can be effective against electromagnetic signal interference around.
Utility model content
In view of the deficiencies in the prior art, the technical problem to be solved by the utility model is to provide a kind of three-dimensional mirror image trees point
Shape ring dipole ultra-wide band antenna, is not only simple in structure, and convenient and efficient.
In order to solve the above-mentioned technical problem, the technical solution of the utility model is: a kind of three-dimensional mirror image tree fractal ring dipole
Sub- ultra-wide band antenna, the antenna include three-layer thin-film matrix, are covered in the positive tree fractal ring dipole of first layer film matrix
Sub- induced radiation patch is covered in second layer film matrix positive tree fractal ring dipole feed radiation patch, is covered in the
The positive tree fractal ring dipole induced radiation patch of three-layer thin-film matrix, the barium titanate for being covered in the third layer film matrix back side
Thin slice, the permalloy coating for being covered in the barium titanate thin slice back side.
Preferably, the tree fractal ring dipole induced radiation patch and tree fractal ring dipole feed radiation patch structure
It is completely the same, all it is made of two symmetrical tree fractal ring dipole radiation arms.
Preferably, the tree fractal ring dipole radiation arm is the feeder line of 3.5mm ± 0.1mm and tree fractal ring group by length
Be 0.5mm ± 0.05mm at, tree fractal ring dipole radiation arm line width, the size in tree fractal ring region be 13mm ± 0.1mm ×
14mm±0.1mm。
Preferably, the tree fractal ring in the tree fractal ring dipole radiation arm uses tetracyclic ring structure, four edges
It is identical along shape.
Preferably, the four edges of the tree fractal ring in the tree fractal ring dipole radiation arm are along the tree using at least 2 ranks
Fractal structure.
Preferably, it is offered in the symmetrical center line of two radiation arms of the tree fractal ring dipole feed radiation patch
Open gap is equipped with antenna feed point in the two sides of open gap.
Preferably, three-layer thin-film matrix structure is consistent, is all polyethylene terephthalate (PET) film matrix, shape
Shape is rectangle, and size is 29mm ± 0.1mm × 15mm ± 0.1mm, with a thickness of 0.2mm ± 0.02mm, relative dielectric constant 4.5
±0.1。
Preferably, the barium titanate thin slice is microwave frequency band low-loss barium titanate thin slice, and shape is rectangle, and size is
29mm ± 0.1mm × 15mm ± 0.1mm, with a thickness of 0.3mm ± 0.1mm, relative dielectric constant is 100 ± 5.
Preferably, the size of the permalloy coating is identical as the size of barium titanate thin slice, permalloy used be by
78% nickel, 21% iron, 1% niobium, tantalum, titanium, aluminium composition high rigidity high magnetic permeability permalloy；The tree fractal ring is even
Extremely son feed radiation patch and tree fractal ring dipole induced radiation patch is printed by graphene conductive ink.
Compared with prior art, the utility model has the following beneficial effects: radianting capacity is strong, stable working performance can
It leans on, performance redundancy is larger, can be effective against electromagnetic signal interference around, have ultrabroad band working performance, can cover completely
The lid second generation is to the 5th third-generation mobile communication frequency range, radio frequency identification frequency range, ultra-wideband communications frequency range and mobile digital TV frequency range.
The utility model is described in more detail with reference to the accompanying drawings and detailed description.
Detailed description of the invention
Fig. 1 is that the tree of the utility model embodiment divides the iteration rule schematic diagram of shape.
Fig. 2 is the construction signal set fractal ring dipole induced radiation patch and set fractal ring dipole feed radiation patch
Figure.
Fig. 3 is the layering cross section structure schematic diagram of antenna entirety.
Fig. 4 is the return loss (S of the utility model embodiment11) performance map.
Specific embodiment
In order to make the above-mentioned features and advantages of the utility model more obvious and understandable, special embodiment below, and cooperate attached drawing,
It is described in detail below.
As shown in Fig. 1 ~ 4, a kind of three-dimensional mirror image tree fractal ring dipole ultra-wide band antenna, which includes three-layer thin-film
Matrix is covered in the positive tree fractal ring dipole induced radiation patch of first layer film matrix, is covered in the second layer film base
The positive tree fractal ring dipole feed radiation patch of matter is covered in the positive tree fractal ring dipole sense of third layer film matrix
Answer radiation patch, the barium titanate thin slice for being covered in the third layer film matrix back side, the perm conjunction for being covered in the barium titanate thin slice back side
Gold plate.
In the utility model embodiment, the tree fractal ring dipole induced radiation patch and tree fractal ring dipole feedback
Electric radiation paster structure is completely the same, is all made of two symmetrical tree fractal ring dipole radiation arms.
In the utility model embodiment, the tree fractal ring dipole radiation arm is the feedback of 3.5mm ± 0.1mm by length
Line and tree fractal ring composition, tree fractal ring dipole radiation arm line width are 0.5mm ± 0.05mm, and the size in tree fractal ring region is
13mm±0.1mm×14mm±0.1mm。
In the utility model embodiment, the tree fractal ring in the tree fractal ring dipole radiation arm uses tetracyclic ring
Structure, four edges are identical along shape.
In the utility model embodiment, the four edges edge of the tree fractal ring in the tree fractal ring dipole radiation arm makes
With the tree fractal structure of at least 2 ranks.
In the utility model embodiment, the tree fractal ring dipole feeds the symmetrical of two radiation arms of radiation patch
Open gap is offered on center line, is equipped with antenna feed point in the two sides of open gap.
In the utility model embodiment, three-layer thin-film matrix structure is consistent, is all polyethylene terephthalate (PET)
Film matrix, shape are rectangle, and size is 29mm ± 0.1mm × 15mm ± 0.1mm, with a thickness of 0.2mm ± 0.02mm, relatively
Dielectric constant is 4.5 ± 0.1；The chemical stability of polyethylene terephthalate (PET) film is very good, can be with oil resistant, resistance to
Diluted acid, resistance to diluted alkaline, resistance to most of solvents can be worked normally within the temperature range of -70 DEG C to 150 DEG C, be used it as
Antenna host material, it is ensured that antenna has stable physics and chemical property.
In the utility model embodiment, the barium titanate thin slice is microwave frequency band low-loss barium titanate thin slice, shape
For rectangle, size is 29mm ± 0.1mm × 15mm ± 0.1mm, with a thickness of 0.3mm ± 0.1mm, relative dielectric constant is 100 ±
5；Barium titanate is a kind of strong dielectric compound with high dielectric constant and low-dielectric loss, is capable of forming effective electric field shielding
Layer prevents interference of the external electrical field to aerial radiation.The alloy that permalloy is made of nickel and iron, nickeliferous 78%, iron content 21%,
And the permalloy of niobium, tantalum, titanium, aluminium is added, high rigidity and high magnetic permeability are had both, can effectively shield external magnetic field to antenna spoke
The influence penetrated, and mechanical protection is provided for antenna structure.By barium titanate thin slice together with permalloy electroplated coating combination, Ke Yiyou
Effect prevents interference of the antenna ambient electromagnetic field to aerial radiation, guarantees that antenna has and relatively resists the interference of surrounding electromagnetic signal by force
Ability.
In the utility model embodiment, the size of the permalloy coating is identical as the size of barium titanate thin slice, institute
With permalloy be by 78% nickel, 21% iron, 1% niobium, tantalum, titanium, aluminium composition high rigidity high magnetic permeability permalloy；
The tree fractal ring dipole feed radiation patch and tree fractal ring dipole induced radiation patch are printed by graphene conductive ink
It makes；Graphene has very high electron mobility, and it is big to be fabricated to the radio-frequency current intensity that can pass through after conductive ink, with stone
The radio-frequency current intensity of inner antenna can be enhanced in black alkene printing conductive ink aerial radiation patch, improves aerial radiation intensity.
Graphene conductive ink is free of metal, and corrosion can be effectively prevented in printed antenna radiation patch.
A kind of application of three-dimensional mirror image tree fractal ring dipole ultra-wide band antenna, the three-dimensional mirror image tree fractal ring are even
Extremely sub- ultra-wide band antenna be applied to mobile communication antenna, RFID antenna, ultra-wideband antenna, mobile digital TV antenna,
Fractal ring dipole antenna, three-dimensional mirror image structural antenna, in strong anti-interference antenna.
In the utility model embodiment, the gain with higher of loop aerial structure and good broadband operation energy
Power is well suited for for designing dipole antenna.Tetracyclic ring has efficient size compression effect, using it as dipole antenna
The Miniaturization Design of dipole antenna may be implemented in the main structure of radiation arm.Tree fractal structure is a kind of " growth type " point shape
Structure uses high-order tree fractal structure as edge, forms tetracyclic ring antenna, and the self-similarity that can use fractal structure makes
The radio-frequency current of inner antenna is uniformly distributed, and guarantees that antenna has biggish bandwidth of operation；This patent divides shape quadrangle using tree
Main radiating structure of the ring as dipole antenna guarantees that antenna has biggish work using the self-similarity of high-order fractal structure
Make bandwidth, utilizes the Miniaturization Design for the High Performance Size compression realization antenna for dividing shape tetracyclic ring.Feed radiation patch above and
Two pieces of induced radiation patches of lower section form the mirror compensated structure in three-dimensional space, effectively enhance the radiation energy of antenna entirety
Power.Use polyethylene terephthalate (PET) film as antenna host material, it is ensured that antenna has good temperature
Adaptability, corrosion resistance and stable Wuli-Shili-Renli system approach.It is plated in the antenna structure using barium titanate thin slice and permalloy
Layer, can effectively prevent interference of the antenna ambient electromagnetic field to aerial radiation.Use graphene conductive ink printed antenna
Radiation patch, corrosion can be effectively prevented and improve aerial radiation intensity.
In the utility model embodiment, tree divides the iteration rule of shape as shown in Fig. 1 of Figure of description.Tree divides the first of shape
Beginning structure respectively grows two perpendicular to dipole on its top using two dipole arms as " trunk " for dipole antenna
Arm, " branch " that length is dipole arm half, constitute 1 rank tree fractal structure；It is pushed up at 2 " branches " of 1 rank tree fractal structure
End respectively grows two perpendicular to " branch ", " twig " that length is " branch " half, constitutes 2 rank tree fractal structures；In 2 ranks
It is the " micro- of " twig " half that 4 " twig " tops of tree fractal structure, which respectively grow two perpendicular to " twig ", length,
Branch " constitutes 3 rank tree fractal structures.Continue iteration according to the method, then high-order tree fractal structure can be obtained.Use high-order
Fractal structure is set as edge, forms tetracyclic ring antenna, the self-similarity that can use fractal structure makes penetrating for inner antenna
Frequency balanced current distribution guarantees that antenna has biggish bandwidth of operation, while utilizing and the High Performance Size of shape tetracyclic ring is divided to compress
Effect realizes the Miniaturization Design of antenna.
It sets fractal ring dipole induced radiation patch and sets the structure such as specification of fractal ring dipole feed radiation patch
Shown in Fig. 2 of attached drawing.Mirror compensated structure is a kind of using induced radiation principle, improves the improvement of dipole antenna radiation performance
Structure.The feed radiation arm of mirror compensated structure size structure and antenna is completely the same.If antenna nearby there are metallic conductor,
For metallic conductor because the effect of the electromagnetic field generated by antenna will evoke electric current, this induced current also can excite electromagnetism in space
, secondary field can be called.The field of space any point is all the field that directly excites of antenna to be superimposed with secondary field.Work as dipole
When length determines, as long as rationally adjusting active dipole at a distance from mirror compensated structure, so that it may make in mirror compensated structure
Electric current on electric current and active dipole antenna arm has same or similar phase.At this moment, the field of space any point is all antenna
The in-phase stacking of the secondary field of the field directly excited and the excitation of mirror compensated structure, the radiance of antenna will obtain biggish mention
It is high.Two pieces of tree fractal ring dipole induced radiation patches above and below tree fractal ring dipole feed radiation patch can be seen
Work is the mirror compensated structure in three-dimensional space, they can effectively enhance the radianting capacity of antenna entirety.
The layering cross section structure of antenna entirety is as shown in Fig. 3 of Figure of description.Polyethylene terephthalate (PET) is thin
The chemical stability of film is very good, can be with oil resistant, resistance to diluted acid, resistance to diluted alkaline, resistance to most of solvents, in -70 DEG C to 150 DEG C of temperature
It can be worked normally in range, use it as antenna host material, it is ensured that antenna has stable physics and chemically
Matter.Barium titanate is a kind of strong dielectric compound with high dielectric constant and low-dielectric loss, is capable of forming effective electric field screen
Layer is covered, interference of the external electrical field to aerial radiation is prevented.The alloy that permalloy is made of nickel and iron, nickeliferous 78%, iron content
21%, and the permalloy of niobium, tantalum, titanium, aluminium is added, high rigidity and high magnetic permeability are had both, can effectively shield external magnetic field to day
The influence of beta radiation, and mechanical protection is provided for antenna structure.It, can by barium titanate thin slice together with permalloy electroplated coating combination
Effectively to prevent interference of the antenna ambient electromagnetic field to aerial radiation, guarantees that antenna has and relatively resist surrounding electromagnetic signal by force
Interference performance.
This antenna uses tree point shape tetracyclic ring as the main radiating structure of dipole antenna, divides shape knot using high-order
The self-similarity of structure guarantees that antenna has biggish bandwidth of operation, realizes antenna using dividing the High Performance Size of shape tetracyclic ring to compress
Miniaturization Design.Antenna measured result shows that the working band range of this antenna is 0.402~17.268GHz, work belt
Width is 16.866GHz, and bandwidth octave is 42.96, is below -10dB, echo in entire working band internal antenna return loss
Loss minimum value is -45.12dB.When this antenna is placed near radio-frequency signal source, radiance is basically unchanged, can be normal
Work.Measured result shows, this antenna completely cover 0.902~0.928GHz, 0.905~0.915GHz, 0.950~
0.960GHz, 1.710~1.785GHz, 1.805~1.880GHz, 1.880~1.920GHz, 1.920~1.980GHz,
2.010~2.025GHz, 2.110~2.170GHz, 2.300~2.400GHz, 2.400~2.4835GHz, 2.570~
2.620GHz, 3.300~3.400GHz, 4.400~4.500GHz, 4.800~4.990GHz, 5.725~5.875GHz,
The second generations such as 3.100~10.600GHz, 11.700~12.200GHz are to the 5th third-generation mobile communication all standard all workings frequency
Section, radio frequency identification frequency range, ultra-wideband communications frequency range and mobile digital TV frequency range.
With for mobile communication system, radio-frequency recognition system, ultra-wideband communication system, mobile digital TV system routine
Antenna compares, this antenna has the advantages that prominent and significant effect: this Antenna Operation bandwidth is close to 17GHz, and bandwidth is again
Sound interval has been more than 40, has ultrabroad band ability to work very outstanding；Most of region of this antenna in working band,
Return loss minimum value is below -40dB, and radiance is stablized, and return loss value fluctuates very little, and the radianting capacity of antenna is strong
And performance redundancy is larger；This antenna can be effective against electromagnetic signal interference around, guarantee the channel radio of multiple working frequency range
Letter signal has higher transmission quality.
Fig. 4 of Figure of description gives the return loss (S of the utility model embodiment11) performance map.It can from Fig. 4
Out, measured result is shown, the working band range of this antenna is 0.402~17.268GHz, bandwidth of operation 16.866GHz,
Bandwidth octave be 42.96, entire working band internal antenna return loss be below -10dB, return loss minimum value be -
45.12dB.When this antenna is placed near radio-frequency signal source, radiance is basically unchanged, and can be worked normally.This antenna
Radianting capacity is strong, and stable and reliable working performance, performance redundancy is larger, can be effective against electromagnetic signal interference around, has super
The second generation can be completely covered to the 5th third-generation mobile communication frequency range, radio frequency identification frequency range, ultra-wideband communications in broadband operation performance
Frequency range and mobile digital TV frequency range are expected to be used widely in the more net integrating systems of microwave frequency band.
The utility model is not limited to above-mentioned preferred forms, anyone can obtain under the enlightenment of the utility model
Other various forms of three-dimensional mirror image tree fractal ring dipole ultra-wide band antennas out.It is all according to present utility model application the scope of the patents
The equivalent changes and modifications done should all belong to the covering scope of the utility model.
Claims (9)
1. a kind of three-dimensional mirror image tree fractal ring dipole ultra-wide band antenna, it is characterised in that: the antenna includes three-layer thin-film base
Matter is covered in the positive tree fractal ring dipole induced radiation patch of first layer film matrix, is covered in second layer film matrix
Positive tree fractal ring dipole feed radiation patch is covered in the positive tree fractal ring dipole induction of third layer film matrix
Radiation patch, the barium titanate thin slice for being covered in the third layer film matrix back side, the permalloy for being covered in the barium titanate thin slice back side
Coating.
2. three-dimensional mirror image tree fractal ring dipole ultra-wide band antenna according to claim 1, it is characterised in that: the tree
Fractal ring dipole induced radiation patch and tree fractal ring dipole feed radiation patch structure are completely the same, all symmetrical by two
Tree fractal ring dipole radiation arm composition.
3. three-dimensional mirror image tree fractal ring dipole ultra-wide band antenna according to claim 2, it is characterised in that: the tree
Fractal ring dipole radiation arm is made of the feeder line that length is 3.5mm ± 0.1mm and tree fractal ring, sets fractal ring dipole radiation
Arm line width is 0.5mm ± 0.05mm, and the size in tree fractal ring region is 13mm ± 0.1mm × 14mm ± 0.1mm.
4. three-dimensional mirror image tree fractal ring dipole ultra-wide band antenna according to claim 2, it is characterised in that: the tree
Tree fractal ring in fractal ring dipole radiation arm uses tetracyclic ring structure, and four edges are identical along shape.
5. three-dimensional mirror image tree fractal ring dipole ultra-wide band antenna according to claim 2, it is characterised in that: the tree
The four edges of tree fractal ring in fractal ring dipole radiation arm are along the tree fractal structure using at least 2 ranks.
6. three-dimensional mirror image tree fractal ring dipole ultra-wide band antenna according to claim 1, it is characterised in that: the tree
Open gap is offered in the symmetrical center line of two radiation arms of fractal ring dipole feed radiation patch, in open gap
Two sides are equipped with antenna feed point.
7. -6 any three-dimensional mirror image tree fractal ring dipole ultra-wide band antenna according to claim 1, it is characterised in that:
Three-layer thin-film matrix structure is consistent, is all polyethylene terephthalate (PET) film matrix, and shape is rectangle, and size is
29mm ± 0.1mm × 15mm ± 0.1mm, with a thickness of 0.2mm ± 0.02mm, relative dielectric constant is 4.5 ± 0.1.
8. -6 any three-dimensional mirror image tree fractal ring dipole ultra-wide band antenna according to claim 1, it is characterised in that:
The barium titanate thin slice is microwave frequency band low-loss barium titanate thin slice, and shape is rectangle, and size is 29mm ± 0.1mm × 15mm
± 0.1mm, with a thickness of 0.3mm ± 0.1mm, relative dielectric constant is 100 ± 5.
9. -6 any three-dimensional mirror image tree fractal ring dipole ultra-wide band antenna according to claim 1, it is characterised in that:
The size of the permalloy coating is identical as the size of barium titanate thin slice；Tree fractal ring dipole feed radiation patch and
Tree fractal ring dipole induced radiation patch is printed by graphene conductive ink.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201822051244.9U CN209088063U (en) | 2018-12-07 | 2018-12-07 | A kind of three-dimensional mirror image tree fractal ring dipole ultra-wide band antenna |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822051244.9U CN209088063U (en) | 2018-12-07 | 2018-12-07 | A kind of three-dimensional mirror image tree fractal ring dipole ultra-wide band antenna |
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| Publication Number | Publication Date |
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| CN209088063U true CN209088063U (en) | 2019-07-09 |
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ID=67126536
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| CN201822051244.9U Expired - Fee Related CN209088063U (en) | 2018-12-07 | 2018-12-07 | A kind of three-dimensional mirror image tree fractal ring dipole ultra-wide band antenna |
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| Country | Link |
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2018
- 2018-12-07 CN CN201822051244.9U patent/CN209088063U/en not_active Expired - Fee Related
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Granted publication date: 20190709 Termination date: 20211207 |