CN109728432A - Gradual change square gap fractal array ultra wide band antenna - Google Patents
Gradual change square gap fractal array ultra wide band antenna Download PDFInfo
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Abstract
The invention provides a gradient square slot fractal array ultra-wideband antenna, wherein an antenna radiation patch is distributed at the radiation surface of the ultra-wideband antenna; the overlooking shape of the antenna radiation patch is formed by arranging a plurality of array element antennas in the same plane; an array element antenna radiation patch is arranged at the radiation surface of the array element antenna; the shape of the array element antenna radiation patch in the downward view direction is a gradually-changed square slit fractal pattern; the array element antenna radiation patches are arranged in a criss-cross mode at the radiation surface of the ultra-wideband antenna to form a gradually-changed square slot fractal array; an antenna feed point is arranged at the center of the bottom edge of the array element antenna radiation patch; the invention can completely cover second-generation to fifth-generation mobile communication frequency bands, radio frequency identification frequency bands, ultra-wideband communication frequency bands and mobile digital television frequency bands, has outstanding ultra-wideband working capability and anti-electromagnetic interference capability, and has high working stability, small size, high radiation intensity and large performance redundancy.
Description
Technical field
The present invention relates to the rectangular gap Fractal array ultra-wide band antennas of antenna technical field, especially gradual change.
Background technique
More net unification techniques be by the similar wireless communications application system combination of a variety of working principles together, to realize work
Make frequency range, base station equipment, handheld terminal to share, saves communication device resources, play one kind of communication equipment effect to greatest extent
New technology is wirelessly communicated, is the most important trend of new century Development of Wireless Communications.Mobile communication system, surpasses radio-frequency recognition system
Wide-band communication system, mobile digital TV system are all to have developed into the wireless communications application system of ripe microwave frequency band, work
Working frequency is close, and the requirement to base station equipment and terminal device has biggish versatility, is expected to realize microwave frequency band by integration
More nets unification.
More net integrating systems require antenna to have multiband compatibility function.China's Generation Mobile Telecommunication System frequency used at present
Section is 0.905~0.915 GHz of GSM standard, 0.950~0.960 GHz, 1.710~1.785 GHz, 1.805~1.880
Ghz band；3G (Third Generation) Moblie frequency range be 1.880~1.920 GHz of TD-SCDMA standard, 2.010~2.025 GHz,
1.920~1.980 GHz of 2.300~2.400 ghz bands 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 has
Three candidate frequency ranges, are respectively as follows: 3.300~3.400 GHz, 4.400~4.500 GHz, 4.800~4.990 GHz.Radio frequency is known
There are three main working frequency range for other system: 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 digital TV system working frequency range is 11.700
~12.200 GHz.The more net in-one device antennas of microwave frequency band need to be completely covered above-mentioned all working frequency range, and ultrabroad band
Ability to work and anti-electromagnetic interference capability are prominent, and job stability is high, and size is small, radiation intensity is high, performance redundancy is big.
Summary of the invention
The present invention proposes the rectangular gap Fractal array ultra-wide band antenna of gradual change, and the second generation can be completely covered to the 5th generation
Mobile communication frequency range, radio frequency identification frequency range, ultra-wideband communications frequency range and mobile digital TV frequency range, ultrabroad band ability to work and
Anti-electromagnetic interference capability is prominent, and job stability is high, and size is small, radiation intensity is high, performance redundancy is big.
The present invention uses following technical scheme.
Gradual change rectangular gap Fractal array ultra-wide band antenna is laid with antenna at the radiating surface of the ultra-wide band antenna
Radiation patch；The vertical view of the aerial radiation patch is arranged in same a plane to shape by multiple array-element antennas；It is described
Array-element antenna radiation patch is equipped at array-element antenna radiating surface；The vertical view of the array-element antenna radiation patch to shape be gradual change side
Shape gap fractal pattern；It is rectangular that the array-element antenna radiation patch is arranged in formation gradual change at ultra-wide band antenna radiating surface in length and breadth
Gap Fractal array；Antenna feed point is equipped at the bottom edge center of the array-element antenna radiation patch.
The rectangular gap Fractal array of gradual change at the ultra-wide band antenna radiating surface, the rectangular gap in array are pressed from one
The sequence of side to the other side is gradually increased, and the working frequency range in each rectangular gap is different, and multiple work are in the rectangular of different frequency range
The radiating bands in gap are superimposed to form the bandwidth of operation of the ultra-wide band antenna.
The array-element antenna radiation patch and array-element antenna earth plate of the array-element antenna radiating surface are by graphene conductive ink
It prints.
The ultra-wide band antenna includes film matrix, is covered in the positive aerial radiation patch of film matrix, is covered in
The antenna ground plate at the film matrix back side, the potassium tantalate-niobate thin slice for being covered in antenna ground back, to be covered in potassium tantalate-niobate thin
The iron-base nanometer crystal alloy coating at the piece back side.
The array-element antenna is that shape miniature antenna is divided in rectangular nested gap；The vertical view of shape miniature antenna is divided in the rectangular nested gap
It is the rectangular gap fractal structure of gradual change of 2 ranks to shape, the rectangular gap fractal structure of the gradual change of 2 rank is in square area
It carries out the rectangular gap fractal iteration of gradual change and obtains.
The rectangular gap fractal structure of gradual change is having a size of ± 0.05 mm's of ± 0.05 mm of mm × 4.55 of 4.55 mm
Square area is through result obtained from 2 rank fractal iterations；The step of 2 rank fractal iteration is；
A1, initial square area is subjected to the rectangular gap fractal iteration of 1 rank gradual change, square area is divided into 13 rows 13
169 small squares of column remove 42 small squares of specific ranks, are left the square area of 127 equal parts, then obtain 1
The rectangular gap fractal structure of rank gradual change；
The specific ranks it is small square include the 2nd row the 2nd column, the 6th column, the 7th column, the 10th column, the 11st column, the 12nd column,
3rd row the 6th column, the 7th column, the 10th column, the 11st column, the 12nd column,
4th row the 10th column, the 11st column, the 12nd column,
6th row the 2nd column, the 6th column, the 7th column, the 10th column, the 11st column, the 12nd column,
7th row the 6th column, the 7th column, the 10th column, the 11st column, the 12nd column,
The column of eighth row the 10th, the 11st column, the 12nd column,
10th row the 2nd column, the 6th column, the 7th column, the 10th column, the 11st column, the 12nd column,
11st row the 6th column, the 7th column, the 10th column, the 11st column, the 12nd column,
12nd row the 10th column, the 11st column, the 12nd arrange totally 42 small squares；
A2, to remaining 127 square areas after the rectangular gap fractal iteration of 1 rank gradual change, respectively again by step described in A1
The rectangular gap fractal iteration of gradual change is carried out, then obtains the rectangular gap fractal structure of gradual change of 2 ranks.
The film matrix arranges totally 16 zonules by least 4 rows 4 and forms, the opposite dielectric of each film matrix zonule
Constant 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,
Its relative dielectric constant is 20.0；The maximum zonule of relative dielectric constant is located at the film matrix lower right corner, and opposite dielectric is normal
Number is 26.0；The relative dielectric constant of each film matrix zonule is gradually increased according to sequence from left to right, from top to bottom,
The difference of the relative dielectric constant of two neighboring film matrix zonule is 1.0.
The film matrix is with the molding film matrix of polyethylene terephthalate, and shape is rectangle, and 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.
The potassium tantalate-niobate thin slice is to have the potassium tantalate-niobate thin slice of low-loss feature in microwave frequency band, 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。
The size of the iron-base nanometer crystal alloy coating is identical as the size of potassium tantalate-niobate thin slice, and iron based nano crystal used closes
Gold is to add a small amount of niobium, copper, silicon, boron element based on ferro element, uses the height of amorphous state low-loss made of fast solidification technology
Permeability magnetic alloy material.
This antenna proposed by the present invention mutually ties the rectangular gap structure of gradual change and " embedded " gap fractal iteration mode
It closes, devises the rectangular gap point shape array-element antenna of gradual change, be superimposed and divide shape using the radiation in the rectangular gap of multiple size gradations
The self-similarity of structure guarantees that array-element antenna has biggish bandwidth of operation；Multiple array-element antennas are arranged according to rectangular array structure
Column composition aerial array, the radiation of array-element antenna is superimposed, makes array antenna while having biggish bandwidth of operation and stronger
Radiation intensity, antenna have biggish performance redundancy；It is thin using the polyethylene terephthalate (PET) of relative dielectric constant gradual change
Film guarantees that antenna has good thermal adaptability, corrosion resistance and stable physics, chemistry special as antenna host material
Property, and further increase using principle of stacking the radiance and bandwidth performance of array antenna.Tantalum niobium is used in the antenna structure
Sour potassium thin slice and iron-base nanometer crystal alloy coating can effectively improve the ability that antenna resists external electromagnetic field interference.Use stone
The radiation patch of black alkene printing conductive ink antenna can be effectively prevented corrosion and improve aerial radiation intensity.
Antenna measured result shows that the working band range of this antenna is 0.412~16.344 GHz, and bandwidth of operation is
15.932 GHz, bandwidth octave are 39.67, are below -10 dB, echo damage in entire working band internal antenna return loss
Consumption minimum value is -49.37 dB.This antenna anti-electromagnetic interference capability is prominent, can be normal when being placed near radio-frequency signal source
Radiation work.This antenna completely covers 0.902~0.928 GHz, 0.905~0.915 GHz, 0.950~0.960
GHz, 1.710~1.785 GHz, 1.805~1.880 GHz, 1.880~1.920 GHz, 1.920~1.980 GHz, 2.010
~2.025 GHz, 2.110~2.170 GHz, 2.300~2.400 GHz, 2.400~2.4835 GHz, 2.570~2.620
GHz, 3.300~3.400 GHz, 4.400~4.500 GHz, 4.800~4.990 GHz, 5.725~5.875 GHz, 3.100
The second generations such as~10.600 GHz, 11.700~12.200 GHz to all standard all working frequency ranges of the 5th third-generation mobile communication,
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 performance redundancy is larger, in working frequency range
Most of regions, the return loss value of antenna is both less than -45 dB, and antenna return loss minimum value is down to -49.37 dB, work
The return loss value variation made in frequency range is steady, fluctuates very little, ensure that wireless communication signals have higher transmission quality；This
The bandwidth of operation of antenna has ultrabroad band ability to work very outstanding close to 40 close to 16 GHz, bandwidth octave；This day
Line has excellent interference free performance, can be placed at mobile communication base station, radio-frequency identification reader/writer, ultra-wideband communications transmitter,
The radio-frequency signal sources such as mobile digital TV transmitter nearby work normally, and antenna radiation performance is unaffected.
In the present invention, rectangular gap size in the rectangular gap structure of gradual change is gradually increased according to sequence from left to right,
Different rectangular gap side lengths is different, and working frequency range is different, and radiation of multiple work in the rectangular gap of different frequency range is superimposed upon
Together, it ensure that antenna has biggish bandwidth of operation.The rectangular gap fractal structure of gradual change is a kind of completely new " embedded " seam
Gap fractal iteration mode has both the rectangular gap of gradual change and the advantages of " embedded " gap fractal structure, has excellent broadband
Ability to work.Divide shape using this " embedded " gap in Antenna Design, aerial radiation patch entirety shape can not changed
In the case where shape, size and external radiation gap, is introduced inside aerial radiation patch and divide shape gap structure, do not changing antenna
In the case where operating center frequency, make that there is uniform electricity inside aerial radiation patch using a point self-similarity for shape gap structure
Flow distribution guarantees that antenna has stable ultrabroad band working performance.
The single rectangular gap of gradual change divides the bandwidth of operation of shape miniature antenna although larger, but radiation intensity is weaker, the present invention
Aerial array is formed according to rectangular array structural arrangement with the rectangular gap point shape miniature antenna of multiple gradual changes, can allow their radiation
It is superimposed, further enhance the radiation intensity of antenna.
The present invention uses polyethylene terephthalate (PET) film as antenna host material, poly terephthalic acid second
The chemical stability of diester (PET) film is very good, can be arrived with oil resistant, resistance to diluted acid, resistance to diluted alkaline, resistance to most of solvents at -70 DEG C
It can be worked normally within the temperature range of 150 DEG C, it is ensured that antenna has stable physics and chemical property.
In the present invention, the PET film matrix of relative dielectric constant gradual change can be divided into the multiple zonules of multiple lines and multiple rows, often
The relative dielectric constant of a film matrix zonule is along film matrix length and width both direction gradual change, each film matrix cell
The relative dielectric constant in domain is gradually increased according to sequence from left to right, from top to bottom；Using this in array antenna design
After the film matrix of relative dielectric constant gradual change, the matrix relative dielectric constant of each array-element antenna is different from, therefore each
The working frequency points of array-element antenna are different；When the working frequency points of different array-element antennas are closer to, their radiation and work frequency
Band can be overlapped mutually, and a radiation intensity and all biggish working band of bandwidth of operation be formed, to improve the spoke of array antenna
Penetrate performance and bandwidth performance.
In the present invention, antenna ground back is covered in potassium tantalate-niobate thin slice；The potassium tantalate-niobate thin slice back side is covered with iron
Based Nanocrystalline Alloys coating；Potassium tantalate-niobate is a kind of Gao Jie for having good thermal stability, chemical stability, mechanical stability
Electric constant low-loss compound is capable of forming efficient electric field shielding layer, prevents external electrical field from interfering Antenna Operation.Iron-based nanometer
Peritectic alloy is a kind of ideal high-performance soft magnetic materials, has superhigh magnetic conductivity, good corrosion resistance and magnetic stability, extremely low
Loss, can effectively prevent interference of the external magnetic field to Antenna Operation.By potassium tantalate-niobate thin slice and iron-base nanometer crystal alloy coating
It combines, can effectively prevent interference of the antenna ambient electromagnetic field to aerial radiation.
Detailed description of the invention
The present invention is described in more detail with reference to the accompanying drawings and detailed description:
Attached drawing 1 is schematic diagram of the invention；
Attached drawing 2 is the hierarchical diagram of antenna of the present invention；
Attached drawing 3 is the schematic diagram of the secondary fractal iteration of the present invention；
Attached drawing 4 is the schematic diagram of the relative dielectric constant in each region of the film matrix of inventive antenna；
Attached drawing 5 is return loss of the invention (S11) performance map
In figure: 1- aerial radiation patch；2- array-element antenna；3- antenna ground plate；4- film matrix；5- potassium tantalate-niobate thin slice；6-
Iron-base nanometer crystal alloy coating.
Specific embodiment
As shown in Figs. 1-5, the rectangular gap Fractal array ultra-wide band antenna of gradual change, the radiating surface of the ultra-wide band antenna
Place is laid with aerial radiation patch 1；The vertical view of the aerial radiation patch to shape by multiple array-element antennas 2 in same a plane
It arranges；Array-element antenna radiation patch is equipped at the array-element antenna radiating surface；The vertical view of the array-element antenna radiation patch
It is the rectangular gap fractal pattern of gradual change to shape；The array-element antenna radiation patch is arranged in ultra-wide band antenna radiating surface in length and breadth
Place forms the rectangular gap Fractal array of gradual change；Antenna is equipped at the bottom edge center of the array-element antenna radiation patch to feed
Point.
The rectangular gap Fractal array of gradual change at the ultra-wide band antenna radiating surface, the rectangular gap in array are pressed from one
The sequence of side to the other side is gradually increased, and the working frequency range in each rectangular gap is different, and multiple work are in the rectangular of different frequency range
The radiating bands in gap are superimposed to form the bandwidth of operation of the ultra-wide band antenna.
The array-element antenna radiation patch and array-element antenna earth plate of the array-element antenna radiating surface are by graphene conductive ink
It prints.
The ultra-wide band antenna includes film matrix 4, is covered in the positive aerial radiation patch 1 of film matrix, pastes
The film matrix back side antenna ground plate 3, be covered in antenna ground back potassium tantalate-niobate thin slice 5, be covered in tantalum niobic acid
The iron-base nanometer crystal alloy coating 6 at the potassium thin slice back side.
The array-element antenna is that shape miniature antenna is divided in rectangular nested gap；The vertical view of shape miniature antenna is divided in the rectangular nested gap
It is the rectangular gap fractal structure of gradual change of 2 ranks to shape, the rectangular gap fractal structure of the gradual change of 2 rank is in square area
It carries out the rectangular gap fractal iteration of gradual change and obtains.
The rectangular gap fractal structure of gradual change is having a size of ± 0.05 mm's of ± 0.05 mm of mm × 4.55 of 4.55 mm
Square area is through result obtained from 2 rank fractal iterations；The step of 2 rank fractal iteration is；
A1, initial square area is subjected to the rectangular gap fractal iteration of 1 rank gradual change, square area is divided into 13 rows 13
169 small squares of column remove 42 small squares of specific ranks, are left the square area of 127 equal parts, then obtain 1
The rectangular gap fractal structure of rank gradual change；
The specific ranks it is small square include the 2nd row the 2nd column, the 6th column, the 7th column, the 10th column, the 11st column, the 12nd column,
3rd row the 6th column, the 7th column, the 10th column, the 11st column, the 12nd column,
4th row the 10th column, the 11st column, the 12nd column,
6th row the 2nd column, the 6th column, the 7th column, the 10th column, the 11st column, the 12nd column,
7th row the 6th column, the 7th column, the 10th column, the 11st column, the 12nd column,
The column of eighth row the 10th, the 11st column, the 12nd column,
10th row the 2nd column, the 6th column, the 7th column, the 10th column, the 11st column, the 12nd column,
11st row the 6th column, the 7th column, the 10th column, the 11st column, the 12nd column,
12nd row the 10th column, the 11st column, the 12nd arrange totally 42 small squares；
A2, to remaining 127 square areas after the rectangular gap fractal iteration of 1 rank gradual change, respectively again by step described in A1
The rectangular gap fractal iteration of gradual change is carried out, then obtains the rectangular gap fractal structure of gradual change of 2 ranks.
The film matrix arranges totally 16 zonules by least 4 rows 4 and forms, the opposite dielectric of each film matrix zonule
Constant 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,
Its relative dielectric constant is 20.0；The maximum zonule of relative dielectric constant is located at the film matrix lower right corner, and opposite dielectric is normal
Number is 26.0；The relative dielectric constant of each film matrix zonule is gradually increased according to sequence from left to right, from top to bottom,
The difference of the relative dielectric constant of two neighboring film matrix zonule is 1.0.
The film matrix is with the molding film matrix of polyethylene terephthalate, and shape is rectangle, and 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.
The potassium tantalate-niobate thin slice is to have the potassium tantalate-niobate thin slice of low-loss feature in microwave frequency band, 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。
The size of the iron-base nanometer crystal alloy coating is identical as the size of potassium tantalate-niobate thin slice, and iron based nano crystal used closes
Gold is to add a small amount of niobium, copper, silicon, boron element based on ferro element, uses the height of amorphous state low-loss made of fast solidification technology
Permeability magnetic alloy material.
Claims (10)
1. the rectangular gap Fractal array ultra-wide band antenna of gradual change, it is characterised in that: at the radiating surface of the ultra-wide band antenna
It is laid with aerial radiation patch；The vertical view of the aerial radiation patch is arranged in same a plane to shape by multiple array-element antennas
It forms；Array-element antenna radiation patch is equipped at the array-element antenna radiating surface；The vertical view of the array-element antenna radiation patch is to shape
Shape is the rectangular gap fractal pattern of gradual change；The array-element antenna radiation patch is arranged in shape at ultra-wide band antenna radiating surface in length and breadth
At the rectangular gap Fractal array of gradual change；Antenna feed point is equipped at the bottom edge center of the array-element antenna radiation patch.
2. the rectangular gap Fractal array ultra-wide band antenna of gradual change according to claim 1, it is characterised in that: the ultra-wide
The rectangular gap Fractal array of gradual change at frequency-band antenna radiating surface, the rectangular gap in array is by the sequence from side to the other side
It is gradually increased, the working frequency range in each rectangular gap is different, and radiating bands of multiple work in the rectangular gap of different frequency range are folded
It is added together the bandwidth of operation to form the ultra-wide band antenna.
3. the rectangular gap Fractal array ultra-wide band antenna of gradual change according to claim 1, it is characterised in that: the array element
The array-element antenna radiation patch and array-element antenna earth plate in aerial radiation face are printed by graphene conductive ink.
4. the rectangular gap Fractal array ultra-wide band antenna of gradual change according to claim 1, it is characterised in that: the ultra-wide
The day that frequency-band antenna includes film matrix, is covered in the positive aerial radiation patch of film matrix, is covered in the film matrix back side
Line earth plate, the potassium tantalate-niobate thin slice for being covered in antenna ground back, the iron-based nanometer for being covered in the potassium tantalate-niobate thin slice back side
Peritectic alloy coating.
5. the rectangular gap Fractal array ultra-wide band antenna of gradual change according to claim 4, it is characterised in that: the array element
Antenna is that shape miniature antenna is divided in rectangular nested gap；The rectangular nested gap divide the vertical view of shape miniature antenna to shape be 2 ranks gradually
Become rectangular gap fractal structure, the rectangular gap fractal structure of the gradual change of 2 rank is to carry out the rectangular seam of gradual change in square area
Gap fractal iteration and obtain.
6. the rectangular gap Fractal array ultra-wide band antenna of gradual change according to claim 5, it is characterised in that: it is described gradually
Becoming rectangular gap fractal structure is the square area having a size of ± 0.05 mm of ± 0.05 mm of mm × 4.55 of 4.55 mm through 2 ranks
Result obtained from fractal iteration；The step of 2 rank fractal iteration is；
A1, initial square area is subjected to the rectangular gap fractal iteration of 1 rank gradual change, square area is divided into 13 rows 13
169 small squares of column remove 42 small squares of specific ranks, are left the square area of 127 equal parts, then obtain 1
The rectangular gap fractal structure of rank gradual change；
The specific ranks it is small square include the 2nd row the 2nd column, the 6th column, the 7th column, the 10th column, the 11st column, the 12nd column,
3rd row the 6th column, the 7th column, the 10th column, the 11st column, the 12nd column,
4th row the 10th column, the 11st column, the 12nd column,
6th row the 2nd column, the 6th column, the 7th column, the 10th column, the 11st column, the 12nd column,
7th row the 6th column, the 7th column, the 10th column, the 11st column, the 12nd column,
The column of eighth row the 10th, the 11st column, the 12nd column,
10th row the 2nd column, the 6th column, the 7th column, the 10th column, the 11st column, the 12nd column,
11st row the 6th column, the 7th column, the 10th column, the 11st column, the 12nd column,
12nd row the 10th column, the 11st column, the 12nd arrange totally 42 small squares；
A2, to remaining 127 square areas after the rectangular gap fractal iteration of 1 rank gradual change, respectively again by step described in A1
The rectangular gap fractal iteration of gradual change is carried out, then obtains the rectangular gap fractal structure of gradual change of 2 ranks.
7. the rectangular gap Fractal array ultra-wide band antenna of gradual change according to claim 6, it is characterised in that: the film
Matrix arranges totally 16 zonules by least 4 rows 4 and forms, and the relative dielectric constant of each film matrix zonule 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, and relative dielectric constant is
20.0；The maximum zonule of relative dielectric constant is located at the film matrix lower right corner, relative dielectric constant 26.0；Each film
The relative dielectric constant of matrix zonule is gradually increased according to sequence from left to right, from top to bottom, two neighboring film matrix
The difference of the relative dielectric constant of zonule is 1.0.
8. the rectangular gap Fractal array ultra-wide band antenna of gradual change according to claim 7, it is characterised in that: described thin
Membrane matrix is with the molding film matrix of polyethylene terephthalate, and shape is rectangle, size be ± 0.1 mm of 20 mm ×
± 0.1 mm of 20 mm, with a thickness of ± 0.02 mm of 0.2 mm.
9. the rectangular gap Fractal array ultra-wide band antenna of gradual change according to claim 8, it is characterised in that: the tantalum
Potassium niobate thin slice is to have a potassium tantalate-niobate thin slice of low-loss feature in microwave frequency band, and shape is rectangle, size be 20 mm ±
± 0.1 mm of the mm of 0.1 mm × 20, with a thickness of ± 0.1 mm of 0.3 mm, relative dielectric constant is 200 ± 5.
10. the rectangular gap Fractal array ultra-wide band antenna of gradual change according to claim 9, it is characterised in that: the iron
The size of Based Nanocrystalline Alloys coating is identical as the size of potassium tantalate-niobate thin slice, and iron-base nanometer crystal alloy used is to be with ferro element
It is main, a small amount of niobium, copper, silicon, boron element are added, amorphous state low-loss high-permeability alloy material made of fast solidification technology is used
Material.
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110571536A (en) * | 2019-09-30 | 2019-12-13 | 厦门大学嘉庚学院 | Gradient Defect Patch Fractal Array Antenna in Terahertz Band |
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| CN110571536B (en) * | 2019-09-30 | 2021-01-29 | 厦门大学嘉庚学院 | Patch Fractal Array Antenna with Gradient Defects in Terahertz Band |
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