CN109768379A - A kind of dual-linear polarization ultra wide band compact aerial - Google Patents
A kind of dual-linear polarization ultra wide band compact aerial Download PDFInfo
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- CN109768379A CN109768379A CN201711101812.5A CN201711101812A CN109768379A CN 109768379 A CN109768379 A CN 109768379A CN 201711101812 A CN201711101812 A CN 201711101812A CN 109768379 A CN109768379 A CN 109768379A
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- dual
- linear polarization
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- wide band
- ultra wide
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Abstract
The invention discloses a kind of dual-linear polarization ultra wide band compact aerials.Include: two it is identical to heel the T-shaped 90 ° of right angles of Vivaldi antenna put, to heel Vivaldi antenna be single-layer medium structure, there are metal plate in dielectric layer two sides.Specifically: 1) radiation patch in Y type gradual change gap is opened, single-layer medium layer two sides are located at, the exponential fade section by playing radiation effects forms；2) Chip-R is connected to radiation patch end, and the other end is connected with parasitic patch, is located at single-layer medium two sides.3) parasitic patch loads four rectangular apertures being parallel to each other above, is located at single-layer medium layer two sides；4) feeding transmission section is different from traditional barron structure using parallel wire structure.The characteristic of compact ultra wide band, dual-linear polarization may be implemented in the present invention, and has the advantages that simple structure and convenient processing, can be produced in batches using printed circuit technique.
Description
Technical field
The invention belongs to microstrip antenna technical field, specifically a kind of dual-linear polarization ultra wide band compact aerial.
Background technique
With the development of the communication technology and electronic countermeasure technology, the requirement to antenna various aspects index is more and more harsher,
Especially to the broadband of frequency band, the integrally-built miniaturization of antenna, it is desirable that higher and higher.The beamwidth of antenna is expanded, antenna is reduced
Size, it is the following trend that frequency develops to more low frequency.Vivaldi antenna have ultra wide band, cross polarization is low, size is small,
The advantages that directional diagram stabilization, planar structure and production easy to process, but limit of the bandwidth of Vivaldi antenna by two factors
System, low-frequency cut-off frequency are mainly limited by antenna width, and the opening width of the usual antenna line of rabbet joint is equal to the one of low frequency wavelength
Half.High-frequency cut-off frequency is limited by the transformational structure of microstrip antenna turn trough line.But using antarafacial Vivaldi antenna i.e. to heel
High-frequency cut-off frequency can be improved in Vivaldi antenna.
Summary of the invention
The purpose of the present invention is to provide the dual-linear polarization ultra wide band of a kind of simple structure and convenient processing, function admirable is tight
It gathers type antenna, can be produced in batches using printed circuit technique.
The technical solution for realizing the aim of the invention is as follows: a kind of dual-linear polarization ultra wide band compact aerial, feature exist
In: two identical to be put the heel right angle in 90 ° Vivaldi antenna a, b by T-type and at a distance of 5mm, is to heel vivaldi antenna
There are metal patch a1, a2 in single-layer medium structure a3, dielectric layer two sides, and two metal patches are about main radiation direction in rotational symmetry；
Metal patch a1, a2 include parallel wire section, the radiation patch a11 and a21 that are provided with Y type gradual change gap, Chip-R a13 and
A23, parasitic patch a12 and a22；Parasitic patch a12 and a22 are loaded at the top of the two sides dielectric layer a3 respectively, two parasitic patch are opened
There are four rectangular apertures；The end radiation patch a11 and a21 is loaded with resistance a13 and a23, resistance a13 and the a23 other end respectively
It is separately connected parasitic patch a12 and a22；Two identical to be disposed vertically with equal amplitude feed heel Vivaldi antenna a, b,
To realize dual-linear polarization.
Compared with prior art, the present invention its remarkable advantage: (1) using to heel Vivaldi antenna, by traditional balun knot
Structure is changed to parallel wire and directly transmits, and structure is simple, realizes miniaturization by resistor loaded and the method for opening Y type gradual change gap,
Its overall width is only 0.21 times of the corresponding air wavelength of low frequency；(2) impedance bandwidth reaches 22.5 frequencys multiplication, realizes ultra-wide
Band；(3) transmission structure of parallel wire guarantees that its directional diagram is symmetrical and stablizes, and 3dB beam angle is in working band at 60 °
More than, and in this beam angle, 1-18GHz frequency range greatest irradiation direction gain is all larger than 0dB, and cross polarization is low；(4) T is pressed
90 ° of right angles of type are placed and at a distance of 5mm, and the good dual-linear polarization requirement of isolation is realized；(5) class microstrip line construction is applicable in it
It is produced in batches in printed circuit technique.
Detailed description of the invention
Fig. 1 is the structure chart of dual-linear polarization ultra wide band compact aerial of the present invention.
Fig. 2 is of the invention to heel vivaldi antenna.
Fig. 3 is the front view of the invention to heel vivaldi antenna.
Fig. 4 is the rearview of the invention to heel vivaldi antenna.
Fig. 5 is the standing-wave ratio VSWR result figure of dual-linear polarization ultra wide band compact aerial of the present invention.
Fig. 6 is the maximum gain result figure of dual-linear polarization ultra wide band compact aerial of the present invention.
Specific embodiment
Below in conjunction with the accompanying drawings and embodiment the invention will be further described.
In conjunction with Fig. 1, the present invention is a kind of 0.8GHz-18GHz dual-linear polarization ultra wide band compact aerial, including two parts,
As shown in Figure 1, respectively two according to T-type right angle in 90 ° put it is identical to heel Vivaldi antenna a and b.Its size is set
It is calculated as。
It is wherein single-layer medium structure a3 to heel vivaldi antenna, there are metal layer a1, a2 in dielectric layer two sides, as schemed (2) institute
Show, be made of parallel wire and exponential fade section and loading resistor and parasitic patch, is provided with Y type gap, this antarafacial Vivaldi
Antenna medium layer two sides are full symmetric, and front view and rearview are as shown in figure (3), (4).Metal layer is divided into four fractions,
Namely for the parallel wire section of transmitting effect；The exponential fade section for playing radiation effects, is provided with Y type gradual change gap, i.e., thereon
For radiation patch metal layer a11 and a21；The parasitic patch a12 and a22 of the two sides dielectric layer a3 top-loaded, two parasitic patch are equal
It is provided with four rectangular apertures；Chip-R a13 and a23 are loaded in the end radiation patch a11 and a21, the connection of the resistance other end is posted
Raw patch a12 and a22.Two it is identical to heel Vivaldi antenna be disposed vertically with equal amplitude feed and at a distance of 5mm, with reality
Existing dual-linear polarization.
As a preferred embodiment, the dielectric layer a1 is the Rogers RO3006 of dielectric constant 6.15, thickness
0.508mm。
As a preferred embodiment, the span line of the metal patch a1 and a2 is parallel wire, and the length is 20mm.
As a preferred embodiment, the radiation patch a11 and a21 has symmetrical Y type gradual change gap, slit width
Degree is 1mm.
As a preferred embodiment, the loading resistor a13 and a23 is respectively 100 ohm.
Embodiment 1
In conjunction with the structure of Fig. 1 0.8-18GHz dual-linear polarization ultra wide band compact aerial of the present invention, a 0.8-18GHz is devised
Dual-linear polarization is to heel Vivaldi antenna: band limits 0.8-18GHz；VSWR < 2.5 in the frequency range, greatest irradiation direction increase
Benefit is greater than -3.5dB.It is the Rogers RO3006 of dielectric constant 6.15, thickness to heel Vivaldi antenna medium layer a3
0.508mm。
Fig. 5 is the standing-wave ratio VSWR result figure of dual-linear polarization ultra wide band compact aerial of the present invention.The frequency range of Antenna Operation
In range 0.8-18GHz, standing-wave ratio VSWR < 2.5 meet design objective.
Fig. 6 is the maximum gain result figure of dual-linear polarization ultra wide band compact aerial of the present invention.The frequency range model of Antenna Operation
It encloses in 0.8-18GHz, the maximum gain of antenna always points to gap opening direction, and greatest irradiation direction gain is greater than -3.5dB.
Table 1 is each frequency point directional diagram and its cross polarization level of dual-linear polarization ultra wide band compact aerial of the present invention.It
In the band limits 0.8-18GHz of line work, cross polarization level, at least more than 15dB, meets within 3dB beam angle
Design objective requirement.Table 1 be respectively at 0.8GHz, 1GHz, 3GHz, 5GHz, 7GHz, 10GHz, 14GHz, 18GHz frequency point,
Theta range is the Cross polarization pattern of phi=0 ° and two sections in phi=90 ° from 0 to 360 °.
Each frequency point directional diagram of table 1
In conclusion 0.8-18GHz dual-linear polarization ultra wide band compact aerial of the present invention, using to heel Vivaldi antenna structure,
Two are put by T-type at right angle and give equal amplitude feed to heel Vivaldi antenna at a distance of 5mm, and dual-linear polarization is realized；
Loading resistor and parasitic patch, and open rectangular aperture in parasitic patch and open the Y type gap of gradual change in radiation patch, finally
Bandwidth has been expanded to low frequency, has realized ultra wide band and miniaturization；The transmission structure of parallel wire stablizes antenna radiation pattern；It is suitable
For being produced in batches with printed circuit technique；May be implemented dual-linear polarization, ultrabroad band, miniaturization characteristic.
Claims (5)
1. a kind of dual-linear polarization ultra wide band compact aerial, it is characterised in that: two it is identical to heel Vivaldi antenna a, b press T
Type right angle in 90 ° is put and at a distance of 5mm, is single-layer medium structure a3 to heel vivaldi antenna, there are metal patch in dielectric layer two sides
A1, a2, two metal patches are about main radiation direction in rotational symmetry；Metal patch a1, a2 include parallel wire section, are provided with Y type
Radiation patch a11 and a21, Chip-R a13 and a23, the parasitic patch a12 and a22 in gradual change gap；Two lateral roof dielectric layer a3
Parasitic patch a12 and a22 are loaded respectively, and two parasitic patch are provided with four rectangular apertures；The end radiation patch a11 and a21 point
It is not loaded with resistance a13 and a23, resistance a13 and the a23 other end is separately connected parasitic patch a12 and a22；Two identical right
Heel Vivaldi antenna a, b are disposed vertically with equal amplitude feed, to realize dual-linear polarization.
2. dual-linear polarization ultra wide band compact aerial according to claim 1, it is characterised in that: the dielectric layer a3 is to be situated between
The Rogers RO3006 of electric constant 6.15, thickness 0.508mm.
3. dual-linear polarization ultra wide band compact aerial according to claim 1, it is characterised in that: the metal patch a1 and
The feeding transmission section of a2 is parallel wire, and the length is 20mm.
4. dual-linear polarization ultra wide band compact aerial according to claim 1, it is characterised in that: the radiation patch a11
Symmetrical Y type gradual change gap, gap width 1mm are had with a21.
5. dual-linear polarization ultra wide band compact aerial according to claim 1, it is characterised in that: the resistance of the load
A13 and a23 is 100 ohm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711101812.5A CN109768379A (en) | 2017-11-10 | 2017-11-10 | A kind of dual-linear polarization ultra wide band compact aerial |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711101812.5A CN109768379A (en) | 2017-11-10 | 2017-11-10 | A kind of dual-linear polarization ultra wide band compact aerial |
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| Publication Number | Publication Date |
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| CN109768379A true CN109768379A (en) | 2019-05-17 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201711101812.5A Pending CN109768379A (en) | 2017-11-10 | 2017-11-10 | A kind of dual-linear polarization ultra wide band compact aerial |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111987448A (en) * | 2020-09-18 | 2020-11-24 | 上海无线电设备研究所 | Dual-polarized Vivaldi antenna |
| CN114188709A (en) * | 2021-10-22 | 2022-03-15 | 山东师范大学 | Vivaldi antenna for medical imaging and manufacturing method thereof |
| CN114927866A (en) * | 2022-05-31 | 2022-08-19 | 南京理工大学 | Ultra-wideband tightly-coupled phased array antenna with unequal interval arrangement |
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| CN201252154Y (en) * | 2008-09-17 | 2009-06-03 | 中国电子科技集团公司第三十八研究所 | Broadband double-line polarized dipole aerial array |
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| CN107317101A (en) * | 2017-05-23 | 2017-11-03 | 南京邮电大学 | It is a kind of based on parasitic patch loading technique to heel Vivaldi antennas |
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2017
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111987448A (en) * | 2020-09-18 | 2020-11-24 | 上海无线电设备研究所 | Dual-polarized Vivaldi antenna |
| CN114188709A (en) * | 2021-10-22 | 2022-03-15 | 山东师范大学 | Vivaldi antenna for medical imaging and manufacturing method thereof |
| CN114927866A (en) * | 2022-05-31 | 2022-08-19 | 南京理工大学 | Ultra-wideband tightly-coupled phased array antenna with unequal interval arrangement |
| CN114927866B (en) * | 2022-05-31 | 2024-06-07 | 南京理工大学 | Ultra-wideband tightly-coupled phased array antenna with unequal interval arrangement |
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Application publication date: 20190517 |
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