CN105896070B - Divide the ultra-wideband microstrip antenna of shape based on rectangular step structure - Google Patents
Divide the ultra-wideband microstrip antenna of shape based on rectangular step structure Download PDFInfo
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- CN105896070B CN105896070B CN201610266415.2A CN201610266415A CN105896070B CN 105896070 B CN105896070 B CN 105896070B CN 201610266415 A CN201610266415 A CN 201610266415A CN 105896070 B CN105896070 B CN 105896070B
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- radiation patch
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- order fractal
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/36—Structural form of radiating elements, e.g. cone, spiral, umbrella; Particular materials used therewith
- H01Q1/38—Structural form of radiating elements, e.g. cone, spiral, umbrella; Particular materials used therewith formed by a conductive layer on an insulating support
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/50—Structural association of antennas with earthing switches, lead-in devices or lightning protectors
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q13/00—Waveguide horns or mouths; Slot antennas; Leaky-waveguide antennas; Equivalent structures causing radiation along the transmission path of a guided wave
- H01Q13/08—Radiating ends of two-conductor microwave transmission lines, e.g. of coaxial lines, of microstrip lines
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Abstract
The invention discloses a kind of ultra-wideband microstrip antennas for dividing shape based on rectangular step structure, including medium substrate, metal ground plate, radiation patch unit and impedance matching microstrip feed line, the front of medium substrate is arranged in radiation patch unit and impedance matching microstrip feed line, the back side of medium substrate is arranged in metal ground plate, radiation patch unit includes single order fractal structure, gradual change trough body structure, second order fractal structure and Transformation Matching microstrip feed line, single order fractal structure includes the first rectangular radiation patch in the arrangement of inverted steps shape, second rectangular radiation patch and third rectangular radiation patch, gradual change trough body structure is offered in the middle part of single order fractal structure, gradual change trough body structure and single order fractal structure self similarity, second order fractal structure is equipped in the middle part of gradual change trough body structure.The present invention uses new fractal structure, had both broadened antenna frequency band, and had reduced antenna volume, and realized antenna and meet ultra wide band characteristic in 3GHz-12.9GHz, while antenna structure is simple, section is low, is easily installed and integrates.
Description
Technical field
Divide shape based on rectangular step structure the present invention relates to wireless communication technology field more particularly to a kind of miniaturization
Ultra-wideband microstrip antenna.
Background technique
Antenna is one of most important component in wireless telecommunications and radar system, and performance superiority and inferiority is directly concerning whole system
Communication quality or detectivity.In recent years, with the rapid development of wireless communication, network overlay area is increasing, various
The demand of data service also sharply increases, and previous communication equipment and mode can not adapt to modern communications multi-service, high speed
The requirement of rate, high quality, Antenna Design are faced with new challenge.For the demand for development for adapting to Modern wireless communication, at present state
The research of interior outside antenna is mainly carried out towards several directions such as miniaturization, broadband and multiband.
The Antenna Design that is created as of fractals provides new approach.Fractal antenna refers to that geometry has self similarity
Property, space filling and dimension, electrical property are usually in a kind of antenna of multi-resonant characteristic.Fractal antenna is fractals and day
The product that line technology combines.Since nineteen ninety-five N.Cohen delivers first about the paper of fractal antenna, fractal antenna is ground
The upsurge studied carefully does not subtract always and has realized business application.Used fractal structure is concentrated mainly on both at home and abroad at present
On the famous fractal structures such as Sierpinski carpet, Hilbert cueve, Cantor set, and considerable work is
Optimization around these antenna carries out, and actually the type of point shape and data are infinite more, it is easily operated newly divide shape knot
Structure antenna can provide theoretical foundation for the research of micro-strip fractal antenna and data are supported.
Summary of the invention
The purpose of the present invention is to provide a kind of ultra-wideband microstrip antennas using new fractal structure.It is of the present invention
Divide the ultra-wideband microstrip antenna structure of shape simple based on rectangular step structure, can satisfy the ultra-wide within the scope of 3GHz-12.9GHz
Band characteristic requirements, fully ensure that the reliability of ultra-wideband communication system.
To achieve the above object, the technical solution adopted by the present invention is that:
Divide the ultra-wideband microstrip antenna of shape, including medium substrate, metal ground plate, radiation patch based on rectangular step structure
Medium substrate is being arranged in just in unit and impedance matching microstrip feed line, the radiation patch unit and impedance matching microstrip feed line
Face, the metal ground plate are arranged in the back side of medium substrate, and the radiation patch unit includes single order fractal structure, gradually
Become trough body structure, second order fractal structure and Transformation Matching microstrip feed line, the single order fractal structure includes arranging in inverted steps shape
The first rectangular radiation patch, the second rectangular radiation patch and the third rectangular radiation patch of column, single order fractal structure middle part open up
There are gradual change trough body structure, gradual change trough body structure and single order fractal structure self similarity, second order point is provided in the middle part of gradual change trough body structure
Shape structure.
The area of first rectangular radiation patch is 10*16mm2, the area of the second rectangular radiation patch is 3.5*
12mm2, the area of third rectangular radiation patch is 1.4*8mm2。
The gradual change trough body structure includes the first rectangle groove body, the second rectangle groove body and the third square in the arrangement of inverted steps shape
Shape groove body, the area of the first rectangle groove body are 5*8mm2, the area of the second rectangle groove body is 2.5*6mm2, third rectangle groove body
Area is 1*4mm2。
The second order fractal structure includes the 4th rectangular radiation patch, the 5th rectangular radiation patch and the 6th rectangular radiation patch
Piece, the area of the 4th rectangular radiation patch are 2.5*4mm2, the area of the 5th rectangular radiation patch is 1.5*3mm2, the 6th rectangle
The area of radiation patch is 0.6*2mm2。
Along center of antenna longitudinal direction, axial symmetry is set single order fractal structure, gradual change trough body structure and the second order fractal structure
It sets.
Length, width and the height of the medium substrate are respectively 35mm, 30mm and 1.6mm.
The metal ground plate is rectangle, and the length and width of metal ground plate is respectively 11.5mm and 30mm.
The present invention, will be in the first rectangular radiation patch of inverted steps shape arrangement, second on the basis of rectangular microstrip antenna
The single order fractal structure of rectangular radiation patch and third rectangular radiation patch composition, can be preferably real as basic radiating element
The impedance matching of existing antenna；The present invention, which utilizes, is provided with single order fractal structure middle part and the gradual change with single order fractal structure self similarity
Trough body structure has further broadened the bandwidth of antenna；The present invention is introduced in the middle part of gradual change trough body structure with gradual change trough body structure certainly
Similar second order fractal structure, changes the path of low-frequency current again, reduces low-frequency resonant frequency, while can also introduce more
Frequency resonance, to realize the ultra wide band of antenna；Overall structure of the present invention is simple, and section is low, is easily installed and integrates.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of present media substrate front side；
Fig. 2 is the structural schematic diagram of present media substrate back；
Fig. 3 is to divide the ultra-wideband microstrip antenna of shape returning in 3GHz-12.9GHz based on rectangular step structure in embodiment
Simulation result diagram is lost in wave；
Fig. 4 is to divide the ultra-wideband microstrip antenna of shape voltage in 3GHz-12.9GHz based on rectangular step structure in embodiment
The simulation result diagram of standing-wave ratio；
Fig. 5 is to divide the ultra-wideband microstrip antenna of shape special in the corresponding radiation of 3.3GHz based on rectangular step structure in embodiment
Property EH surface radiation directional diagram；
Fig. 6 is to divide the ultra-wideband microstrip antenna of shape special in the corresponding radiation of 7.2GHz based on rectangular step structure in embodiment
Property EH surface radiation directional diagram；
Fig. 7 is to divide the ultra-wideband microstrip antenna of shape in the corresponding radiation of 11.3GHz based on rectangular step structure in embodiment
Characteristic EH surface radiation directional diagram.
Specific embodiment
As shown in Figure 1 to Figure 2, a kind of ultra-wideband microstrip antenna dividing shape based on rectangular step structure of the present invention,
Including medium substrate 1, metal ground plate 2, radiation patch unit and impedance matching microstrip feed line 3.Radiation patch unit and impedance
The front of medium substrate 1 is arranged in matching microstrip feed line 3.The back side of medium substrate 1 is arranged in metal ground plate 2.The present embodiment
It based on rectangular microstrip antenna, i.e., is respectively 35mm, 30mm and 1.6mm and dielectric constant using length, width and height
For 4.4 the copper-clad plate of FR4 epoxy resin as medium substrate 1, be respectively the rectangle of 11.5mm and 30mm using length and width
Copper sheet is not only able to achieve ultra wide band characteristic as metal ground plate 2, but also can reduce the volume of antenna.
Radiation patch unit in the present invention includes single order fractal structure, gradual change trough body structure, second order fractal structure and change
Change matching microstrip feed line 4.Single order fractal structure, gradual change trough body structure and second order fractal structure are along center of antenna longitudinal direction axial symmetry
Setting.Single order fractal structure includes in the first rectangular radiation patch 5 of inverted steps shape arrangement, the second rectangular radiation patch 6 and the
Three rectangular radiation patch 7.The length L and width W of first rectangular radiation patch 5 approximate can be determined according to the following formula:
Wherein εeFor effective dielectric constant, h is thickness of dielectric layers, λ0For the wavelength of free space, c is the light velocity, εrFor medium
Relative dielectric constant.The area of the first rectangular radiation patch 5 is 10*16mm in the present embodiment2, the second rectangular radiation patch 6
Area is 3.5*12mm2, the area of third rectangular radiation patch 7 is 1.4*8mm2.Impedance matching microstrip feed line 3 is using 50 Ω's
Characteristic impedance, width can be calculated according to TXLine software, belong to the prior art, details are not described herein again.Of the invention one
Rank fractal structure uses generally rectangular grading structure, and impedance matching can be better achieved.
The present invention offers gradual change trough body structure, gradual change trough body structure and single order fractal structure in the middle part of single order fractal structure
Self similarity, including the first rectangle groove body 8, the second rectangle groove body 9 and the third rectangle groove body 10 in the arrangement of inverted steps shape, gradual change slot
Body structure can change the flow direction of electric current in radiation patch, to increase active path, further broaden the bandwidth of antenna.Its
In, self similarity is the existing noun in fractal structure, and those skilled in the art are expressly understood that its meaning, are not present in this patent
The problem of insufficient disclosure.The area of the first rectangle groove body 8 is 5*8mm in the present embodiment2, the area of the second rectangle groove body 9 is
2.5*6mm2, the area of third rectangle groove body 10 is 1*4mm2。
The present invention is provided with second order fractal structure, including the 4th rectangular radiation patch 11, in the middle part of gradual change trough body structure
Five rectangular radiation patch 12 and the 6th rectangular radiation patch 13, second order fractal structure can reduce low-frequency resonant frequency, improve day
The low frequency matching problem of line, while can realize multifrequency resonance phenomena.The area of the 4th rectangular radiation patch 11 is in this implementation
2.5*4mm2, the area of the 5th rectangular radiation patch 12 is 1.5*3mm2, the area of the 6th rectangular radiation patch 13 is 0.6*
2mm2.One end of Transformation Matching microstrip feed line 4 connects the bottom end of the 6th rectangular radiation patch 13, Transformation Matching microstrip feed line 4
The other end is connected to the second rectangular radiation patch 6, realizes the impedance matching between single order fractal structure and second order fractal structure.
As shown in Figure 3 and Figure 4, using HFSS11 software to the ultra-wide for dividing shape based on rectangular step structure in the present embodiment
Band microstrip antenna carries out simulation optimization, it is known that and return wave loss parameter S11 of the antenna in 3GHz-12.9GHz is less than -10dB,
Meet ultra wide band characteristic；Antenna voltage standing wave ratio VSWR in 3GHz-12.9GHz meets communication system engineering less than 2
It is required that.As shown in Figures 5 to 7, the face ultra-wideband microstrip antenna H of shape is divided to exist based on rectangular step structure in the present embodiment
3.3GHz, 7.2GHz and 11.3GHz keep good omnidirectional radiation characteristic.
It is of the present invention to divide the ultra-wideband microstrip antenna of shape by using new fractal structure based on rectangular step structure,
Both antenna frequency band had been broadened, antenna volume is reduced, and has realized antenna and meets ultra wide band characteristic in 3GHz-12.9GHz, together
When antenna structure it is simple, section is low, is easily installed and integrates.
Claims (7)
1. dividing the ultra-wideband microstrip antenna of shape based on rectangular step structure, including medium substrate, metal ground plate, radiation patch list
Member and impedance matching microstrip feed line, medium substrate is being arranged in just in the radiation patch unit and impedance matching microstrip feed line
The back side of medium substrate is arranged in face, the metal ground plate, it is characterised in that: the radiation patch unit includes single order
Fractal structure, gradual change trough body structure, second order fractal structure and Transformation Matching microstrip feed line, the single order fractal structure include being in
The first rectangular radiation patch, the second rectangular radiation patch and the third rectangular radiation patch of inverted steps shape arrangement, single order divide shape knot
Gradual change trough body structure, gradual change trough body structure and single order fractal structure self similarity are offered in the middle part of structure, are set in the middle part of gradual change trough body structure
It is equipped with second order fractal structure；The bottom end of one end connection second order fractal structure of Transformation Matching microstrip feed line, the feedback of Transformation Matching micro-strip
The other end of line connects the second rectangular radiation patch, realizes the impedance matching between single order fractal structure and second order fractal structure.
2. dividing the ultra-wideband microstrip antenna of shape based on rectangular step structure as described in claim 1, it is characterised in that: described
The area of one rectangular radiation patch is 10*16mm2, the area of the second rectangular radiation patch is 3.5*12 mm2, third rectangular radiation
The area of patch is 1.4*8 mm2。
3. dividing the ultra-wideband microstrip antenna of shape based on rectangular step structure as claimed in claim 2, it is characterised in that: it is described gradually
Becoming trough body structure includes in the first rectangle groove body, the second rectangle groove body and the third rectangle groove body of the arrangement of inverted steps shape, the first square
The area of shape groove body is 5*8mm2, the area of the second rectangle groove body is 2.5*6 mm2, the area of third rectangle groove body is 1*4
mm2。
4. dividing the ultra-wideband microstrip antenna of shape based on rectangular step structure as claimed in claim 3, it is characterised in that: described two
Rank fractal structure includes the 4th rectangular radiation patch, the 5th rectangular radiation patch and the 6th rectangular radiation patch, the 4th rectangle spoke
The area for penetrating patch is 2.5*4mm2, the area of the 5th rectangular radiation patch is 1.5*3 mm2, the face of the 6th rectangular radiation patch
Product is 0.6*2 mm2。
5. dividing the ultra-wideband microstrip antenna of shape based on rectangular step structure as claimed in claim 4, it is characterised in that: described
Single order fractal structure, gradual change trough body structure and second order fractal structure are symmetrical arranged along center of antenna longitudinal axis.
6. dividing the ultra-wideband microstrip antenna of shape based on rectangular step structure as claimed in claim 5, it is characterised in that: given an account of
Length, width and the height of matter substrate are respectively 35mm, 30mm and 1.6mm.
7. dividing the ultra-wideband microstrip antenna of shape based on rectangular step structure as claimed in claim 6, it is characterised in that: described
Metal ground plate is rectangle, and the length and width of metal ground plate is respectively 11.5mm and 30mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201610266415.2A CN105896070B (en) | 2016-04-26 | 2016-04-26 | Divide the ultra-wideband microstrip antenna of shape based on rectangular step structure |
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| CN201610266415.2A CN105896070B (en) | 2016-04-26 | 2016-04-26 | Divide the ultra-wideband microstrip antenna of shape based on rectangular step structure |
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| CN105896070A CN105896070A (en) | 2016-08-24 |
| CN105896070B true CN105896070B (en) | 2019-03-12 |
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Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107069218B (en) * | 2017-05-09 | 2023-06-23 | 中电科微波通信（上海）股份有限公司 | Waveguide antenna and signal receiving system |
| CN109037936A (en) * | 2018-07-27 | 2018-12-18 | 东华大学 | A kind of broadband microstrip patch antenna |
| WO2021000147A1 (en) * | 2019-06-30 | 2021-01-07 | 瑞声声学科技(深圳)有限公司 | Radiation element and antenna |
| CN112798830B (en) * | 2021-03-18 | 2021-07-02 | 深圳大学 | Switching device suitable for multi-antenna test and use method thereof |
| CN114709608A (en) * | 2022-04-13 | 2022-07-05 | 河北工业大学 | Novel ultra-wideband planar monopole antenna |
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| CN102694247A (en) * | 2012-05-08 | 2012-09-26 | 哈尔滨工程大学 | Integrated narrow band/ultra wide band cognitive radio antenna |
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| CN102694247A (en) * | 2012-05-08 | 2012-09-26 | 哈尔滨工程大学 | Integrated narrow band/ultra wide band cognitive radio antenna |
| CN102969564A (en) * | 2012-11-30 | 2013-03-13 | 华南理工大学 | Small ultra wideband band-notched antenna with controllable second-order notched bandwidth |
| CN103259086A (en) * | 2013-04-19 | 2013-08-21 | 郑州轻工业学院 | Ultra-wide bandwidth planar miniaturization micro-strip antenna |
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| 超宽带微带天线研究;贾登权;《中国优秀硕士学位论文全文数据库 信息科学辑》;20100315(第03期);第16-34、38-48页 |
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