CN109728433A - Four spiral slit Fractal array ultra-wide band antennas - Google Patents
Four spiral slit Fractal array ultra-wide band antennas Download PDFInfo
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Abstract
The present invention relates to a kind of four spiral slit Fractal array ultra-wide band antennas, it is characterised in that: including film matrix, the antenna ground plate for being covered in the positive four spiral slit Fractal array feed radiation patch of film matrix, being covered in the film matrix back side, the potassium tantalate-niobate thin slice for being covered in antenna ground back, the iron-base nanometer crystal alloy coating for being covered in the potassium tantalate-niobate thin slice back side；The present invention provides a kind of with sufficient performance redundancy and stronger anti-interference ability, size is small, radiation intensity is high, stable and reliable working performance, with ultrabroad band ability to work, 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 present invention relates to mobile communication antenna fields, and in particular to a kind of four spiral slit Fractal array ultrabroad band days
Line.
Background technique
Together by system combination similar in multiple working frequency range, more net unifications and multisystem fusion are realized, is channel radio
One of the important trend of letter technology development.At the beginning of 21 century so far, line communication technology development is swift and violent, constantly has new wireless communication to answer
It is come into operation with system.Mobile communication system, radio-frequency recognition system, ultra-wideband communication system, mobile digital TV system are mesh
Preceding use scope most extensively, the maximum wireless communications application system of development potentiality, they all work in microwave frequency band, Working mould
It is formula, communication protocol, similar with the requirement of base station equipment to terminal device, have and biggish integrates potentiality.
By mobile communication system, radio-frequency recognition system, ultra-wideband communication system, mobile digital TV system globe area one
It rises, more nets unification of microwave frequency band may be implemented.More net integrating systems require antenna to have multiband compatibility function.China is current
The Generation Mobile Telecommunication System frequency range used be 0.905~0.915 GHz of GSM standard, 0.950~0.960 GHz, 1.710~
1.785 GHz, 1.805~1.880 ghz bands；3G (Third Generation) Moblie frequency range is TD-SCDMA standard 1.880~1.920
GHz, 1.920~1.980 GHz of 2.010~2.025 GHz, 2.300~2.400 ghz bands and WCDMA standard, 2.110~
2.170 ghz band；Forth generation mobile communication frequency range is 2.570~2.620 ghz band of TD-LTE standard.Will put into makes
5th third-generation mobile communication there are three candidate frequency range, be respectively as follows: 3.300~3.400 GHz, 4.400~4.500 GHz,
4.800~4.990 GHz.Radio-frequency recognition system is there are three main working frequency range: 0.902~0.928 GHz, 2.400~
2.4835 GHz, 5.725~5.875 GHz.The working frequency range of radio ultra wide band system is 3.100~10.600 GHz.Mobile number
Television system working frequency range is 11.700~12.200 GHz.Microwave frequency band mostly net unification antenna needs to be completely covered above-mentioned all
Working frequency range has sufficient performance redundancy and stronger anti-interference ability, and size is small, and radiation intensity is high, stable working performance
Reliably.
Summary of the invention
In view of this, the purpose of the present invention is to provide a kind of four spiral slit Fractal array ultra-wide band antennas, it can
The second generation is 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.
To achieve the above object, the present invention adopts the following technical scheme:
A kind of four spiral slit Fractal array ultra-wide band antennas, it is characterised in that: including film matrix, it is covered in film matrix
Positive four spiral slit Fractal array feed radiation patch, is covered in day at the antenna ground plate for being covered in the film matrix back side
The potassium tantalate-niobate thin slice of line ground connection back, the iron-base nanometer crystal alloy coating for being covered in the potassium tantalate-niobate thin slice back side.
Further, four spiral slit Fractal array feed radiation patch be by four spiral slit point shape miniature antennas by
According to the aerial array of rectangular array structural arrangement composition.
Further, the four spiral slit point shape miniature antenna be having a size of ± 0.1 mm of mm × 4.4 of 4.4 mm ±
The rectangular area of 0.1 mm carries out four spiral slit fractal iterations and obtains.
Further, four spiral slit divides shape miniature antenna to use four spiral slit fractal structures of at least 2 ranks.
Further, each four spiral slit, which is divided, is equipped with antenna feed point at the bottom edge center of shape miniature antenna.
Further, the film matrix is polyethylene terephthalate (PET) film matrix, and shape is rectangle,
Size is ± 0.1 mm of ± 0.1 mm of mm × 20 of 20 mm, with a thickness of ± 0.02 mm of 0.2 mm.
Further, the potassium tantalate-niobate thin slice is microwave frequency band low-loss potassium tantalate-niobate thin slice, and shape is rectangle, ruler
Very little is ± 0.1 mm of ± 0.1 mm of mm × 20 of 20 mm, and with a thickness of ± 0.1 mm of 0.3 mm, relative dielectric constant is 200 ± 5.
Further, the four spiral slit Fractal array feed radiation patch includes that 4 rows 4 arrange totally 16 four spiral slits
Divide shape miniature antenna.
A kind of building side of four spiral slit fractal structures of 2 ranks of four spiral slit Fractal array ultra-wide band antenna
Method, comprising the following steps:
The initial configuration of S1: four spiral slit fractal structure of step is square, is divided into 11 row, 11 column, 121 small pros
Shape;
Step S2: the 2nd row the 6th column, the 7th column, the 8th column, the 9th are arranged, and the 3rd row the 2nd column, the 3rd column, the 4th column, the 6th column, the 9th arrange,
4th row the 2nd column, the 4th column, the 6th column, the 8th column, the 9th column, the 5th row the 2nd column, the 6th column, the 6th row the 2nd column, the 3rd column, the 4th column, the
5 arrange, the 6th arranges, the 7th arranges, the 8th arranges, the 9th arranges, the 10th arranges, and the 7th row the 6th arranges, the 10th arranges, eighth row the 3rd arranges, the 4th arranges, the 6th arranges,
8th column, the 10th column, the 9th row the 3rd column, the 6th column, the 8th column, the 9th column, the 10th column, the 10th row the 3rd column, the 4th column, the 5th column, the 6th
Column, totally 41 small squares are cut out, and form four spiral slits, are left the square area of 80 equal parts, are obtained 1 rank, four spiral seam
Gap fractal structure；
Step S3: by 80 square areas of 1 rank, four spiral slit fractal structure, four spiral slit point shapes is done again respectively and are changed
In generation, then obtains 2 rank, four spiral slit fractal structure.
Compared with the prior art, the invention has the following beneficial effects:
The present invention has excellent ultrabroad band ability to work and anti-interference ability, can be completely covered the second generation to the 5th generation and move
Dynamic communications band, radio frequency identification frequency range, ultra-wideband communications frequency range and mobile digital TV frequency range, size is small, and radiation intensity is high, work
Make stable and reliable for performance, performance redundancy abundance.
Detailed description of the invention
Fig. 1 is the four advanced schematic diagrames of spiral slit fractal structure of the invention；
Fig. 2 is the structural schematic diagram of film matrix of the present invention；
Fig. 3 is the structural schematic diagram of four spiral slit fractal antennas of the invention；
Fig. 4 is overall structure of the present invention；
Fig. 5 is the return loss (S of the embodiment of the present invention11) performance map.
Specific embodiment
The present invention will be further described with reference to the accompanying drawings and embodiments.
Fig. 1 is please referred to, the present invention provides a kind of four spiral slit Fractal array ultra-wide band antennas, it is characterised in that: packet
Film matrix is included, the positive four spiral slit Fractal array feed radiation patch of film matrix is covered in, is covered in film matrix
The antenna ground plate at the back side, is covered in the potassium tantalate-niobate thin slice back side at the potassium tantalate-niobate thin slice for being covered in antenna ground back
Iron-base nanometer crystal alloy coating.The four spiral slit Fractal array feed radiation patch is by four spiral slit point shape miniature antennas
The aerial array formed according to rectangular array structural arrangement.The four spiral slit point shape miniature antenna be having a size of 4.4 mm ±
The rectangular area of ± 0.1 mm of the mm of 0.1 mm × 4.4 carries out four spiral slit fractal iterations and obtains.Four spiral slit point
Shape miniature antenna uses four spiral slit fractal structures of at least 2 ranks.
In the present embodiment, each four spiral slit, which is divided at the bottom edge center of shape miniature antenna, is equipped with antenna feed
Point.
In the present embodiment, the film matrix is polyethylene terephthalate (PET) film matrix, and shape is square
Shape, size is ± 0.1 mm of ± 0.1 mm of mm × 20 of 20 mm, with a thickness of ± 0.02 mm of 0.2 mm.
In the present embodiment, the potassium tantalate-niobate thin slice is microwave frequency band low-loss potassium tantalate-niobate thin slice, and shape is square
Shape, size is ± 0.1 mm of ± 0.1 mm of mm × 20 of 20 mm, with a thickness of ± 0.1 mm of 0.3 mm, relative dielectric constant 200
±5。
In the present embodiment, as shown in Fig. 2, four spiral slit Fractal array feed radiation patch includes that 4 rows 4 column are total
16 four spiral slits divide shape miniature antenna.The relative dielectric constant of some zonule of digital representation in Fig. 2.Each film matrix is small
The relative dielectric constant in region is along film matrix length and width both direction gradual change；The smallest zonule of relative dielectric constant is located at
The film matrix upper left corner, relative dielectric constant 16.0；The maximum zonule of relative dielectric constant is located at film matrix bottom right
Angle, relative dielectric constant 22.0；The relative dielectric constant of each film matrix zonule is according to from left to right, from top to bottom
Sequence gradually increase, the difference of the relative dielectric constant of two neighboring film matrix zonule is 1.0.
In the present embodiment, the size of the iron-base nanometer crystal alloy coating is identical as the size of potassium tantalate-niobate thin slice, institute
It is a small amount of niobium, copper, silicon, boron element to be added, using made of fast solidification technology based on ferro element with iron-base nanometer crystal alloy
Amorphous state low-loss high-permeability alloy material.The layering cross section structure of antenna entirety is as shown in Fig. 4 of Figure of description.Tantalum niobium
Sour potassium is a kind of high dielectric constant low-loss compound for having good thermal stability, chemical stability, mechanical stability, energy
Efficient electric field shielding layer is enough formed, prevents external electrical field from interfering Antenna Operation.Iron-base nanometer crystal alloy is a kind of ideal height
Performance soft magnetic materials has superhigh magnetic conductivity, good corrosion resistance and magnetic stability, extremely low loss, can effectively prevent outer
Interference of the boundary magnetic field to Antenna Operation.It, can be effective by potassium tantalate-niobate thin slice together with iron-base nanometer crystal alloy electroplated coating combination
Prevent interference of the antenna ambient electromagnetic field to aerial radiation.
In the present embodiment, the aerial radiation patch and antenna ground plate are printed by graphene conductive ink.Stone
Black alkene 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 graphene conductive
The radio-frequency current intensity of inner antenna can be enhanced in ink printed antenna radiation patch, improves aerial radiation intensity.Graphene is led
Electric ink is free of metal, and corrosion can be effectively prevented in printed antenna radiation patch.
A kind of building side of four spiral slit fractal structures of 2 ranks of four spiral slit Fractal array ultra-wide band antenna
Method, comprising the following steps:
The initial configuration of S1: four spiral slit fractal structure of step is square, is divided into 11 row, 11 column, 121 small pros
Shape;
Step S2: the 2nd row the 6th column, the 7th column, the 8th column, the 9th are arranged, and the 3rd row the 2nd column, the 3rd column, the 4th column, the 6th column, the 9th arrange,
4th row the 2nd column, the 4th column, the 6th column, the 8th column, the 9th column, the 5th row the 2nd column, the 6th column, the 6th row the 2nd column, the 3rd column, the 4th column, the
5 arrange, the 6th arranges, the 7th arranges, the 8th arranges, the 9th arranges, the 10th arranges, and the 7th row the 6th arranges, the 10th arranges, eighth row the 3rd arranges, the 4th arranges, the 6th arranges,
8th column, the 10th column, the 9th row the 3rd column, the 6th column, the 8th column, the 9th column, the 10th column, the 10th row the 3rd column, the 4th column, the 5th column, the 6th
Column, totally 41 small squares are cut out, and form four spiral slits, are left the square area of 80 equal parts, are obtained 1 rank, four spiral seam
Gap fractal structure；
Step S3: by 80 square areas of 1 rank, four spiral slit fractal structure, four spiral slit point shapes is done again respectively and are changed
In generation, then obtains 2 rank, four spiral slit fractal structure.
In the present embodiment, four spiral slit structures are made of four completely the same spiral slits of shape, each spiral
Gap is rotatably arranged by the rectilinear slot that 4 length are gradually reduced, and the angle between adjacent two rectilinear slots is right angle.
The length of every rectilinear slot is different, and working frequency range when radiation is also different, and the radiation of 4 rectilinear slots is superimposed, can be with shape
At the biggish Radiation work frequency range of a bandwidth of operation.The radiation superposition of four spiral slit, it is ensured that four spiral slit knots
Structure has biggish radiation intensity.Four spiral slit fractal structures are a kind of completely new " embedded " gap fractal iteration modes, simultaneous
Have the advantages of four spiral slits and " embedded " gap fractal structure, there is excellent broadband operation ability.In Antenna Design
It is middle to divide shape using this " embedded " gap, aerial radiation patch global shape, size and external radiation seam can not changed
In the case where gap, is introduced inside aerial radiation patch and divide shape gap structure, the case where not changing Antenna Operation centre frequency
Under, make that there is uniform current distribution inside aerial radiation patch using a point self-similarity for shape gap structure, guarantees antenna tool
There is stable ultrabroad band working performance.
The foregoing is merely presently preferred embodiments of the present invention, all equivalent changes done according to scope of the present invention patent with
Modification, is all covered by the present invention.
Claims (9)
1. a kind of four spiral slit Fractal array ultra-wide band antennas, it is characterised in that: including film matrix, it is covered in film base
The positive four spiral slit Fractal array feed radiation patch of matter, is covered in the antenna ground plate for being covered in the film matrix back side
The potassium tantalate-niobate thin slice of antenna ground back, the iron-base nanometer crystal alloy coating for being covered in the potassium tantalate-niobate thin slice back side.
2. four spiral slit Fractal array ultra-wide band antenna according to claim 1, it is characterised in that: four spiral
The day that Fractal array feed radiation patch in gap is made of four spiral slit point shape miniature antennas according to rectangular array structural arrangement
Linear array.
3. four spiral slit Fractal array ultra-wide band antenna according to claim 2, it is characterised in that: four spiral
Gap point shape miniature antenna is to carry out four spiral seams in the rectangular area having a size of ± 0.1 mm of ± 0.1 mm of mm × 4.4 of 4.4 mm
Gap fractal iteration and obtain.
4. four spiral slit Fractal array ultra-wide band antenna according to claim 2, it is characterised in that: four spiral
Gap divides shape miniature antenna to use four spiral slit fractal structures of at least 2 ranks.
5. four spiral slit Fractal array ultra-wide band antenna according to claim 2, it is characterised in that: described each four
Spiral slit, which is divided, is equipped with antenna feed point at the bottom edge center of shape miniature antenna.
6. four spiral slit Fractal array ultra-wide band antenna according to claim 1, it is characterised in that: the film base
Matter be polyethylene terephthalate (PET) film matrix, shape be rectangle, size be ± 0.1 mm of mm × 20 of 20 mm ±
0.1 mm, with a thickness of ± 0.02 mm of 0.2 mm.
7. four spiral slit Fractal array ultra-wide band antenna according to claim 1, it is characterised in that: the tantalum niobic acid
Potassium thin slice be microwave frequency band low-loss potassium tantalate-niobate thin slice, shape be rectangle, size be ± 0.1 mm of mm × 20 of 20 mm ±
0.1 mm, with a thickness of ± 0.1 mm of 0.3 mm, relative dielectric constant is 200 ± 5.
8. four spiral slit Fractal array ultra-wide band antenna according to claim 2, it is characterised in that: four spiral
Fractal array feed radiation patch in gap includes that totally 16 four spiral slits divide shape miniature antenna to 4 rows 4 column.
9. four spiral slits of 2 ranks of four spiral slit Fractal array ultra-wide band antenna according to claim 4 divide shape
The construction method of structure, which comprises the following steps:
The initial configuration of S1: four spiral slit fractal structure of step is square, is divided into 11 row, 11 column, 121 small pros
Shape;
Step S2: the 2nd row the 6th column, the 7th column, the 8th column, the 9th are arranged, and the 3rd row the 2nd column, the 3rd column, the 4th column, the 6th column, the 9th arrange,
4th row the 2nd column, the 4th column, the 6th column, the 8th column, the 9th column, the 5th row the 2nd column, the 6th column, the 6th row the 2nd column, the 3rd column, the 4th column, the
5 arrange, the 6th arranges, the 7th arranges, the 8th arranges, the 9th arranges, the 10th arranges, and the 7th row the 6th arranges, the 10th arranges, eighth row the 3rd arranges, the 4th arranges, the 6th arranges,
8th column, the 10th column, the 9th row the 3rd column, the 6th column, the 8th column, the 9th column, the 10th column, the 10th row the 3rd column, the 4th column, the 5th column, the 6th
Column, totally 41 small squares are cut out, and form four spiral slits, are left the square area of 80 equal parts, are obtained 1 rank, four spiral seam
Gap fractal structure；
Step S3: by 80 square areas of 1 rank, four spiral slit fractal structure, four spiral slit point shapes is done again respectively and are changed
In generation, then obtains 2 rank, four spiral slit fractal structure.
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2019
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| US20050231434A1 (en) * | 2002-05-01 | 2005-10-20 | The Regents Of The University Of Michigan | Slot antenna |
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| US20180059505A1 (en) * | 2016-08-23 | 2018-03-01 | Samsung Electronics Co., Ltd. | Optical modulating device, beam steering device, and system employing the same |
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