CN109713443B - SIW antenna array loaded with butterfly-like left-handed material units - Google Patents
SIW antenna array loaded with butterfly-like left-handed material units Download PDFInfo
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- CN109713443B CN109713443B CN201910011840.0A CN201910011840A CN109713443B CN 109713443 B CN109713443 B CN 109713443B CN 201910011840 A CN201910011840 A CN 201910011840A CN 109713443 B CN109713443 B CN 109713443B
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- 239000000463 material Substances 0.000 title claims abstract description 83
- 239000002184 metal Substances 0.000 claims abstract description 34
- 238000005192 partition Methods 0.000 claims abstract description 9
- 230000000737 periodic effect Effects 0.000 claims abstract description 5
- 239000000758 substrate Substances 0.000 claims abstract description 4
- 239000010410 layer Substances 0.000 claims description 13
- 230000005855 radiation Effects 0.000 claims description 9
- 239000003989 dielectric material Substances 0.000 claims description 8
- 229910003460 diamond Inorganic materials 0.000 claims description 5
- 239000010432 diamond Substances 0.000 claims description 5
- 230000007547 defect Effects 0.000 claims description 3
- 239000011229 interlayer Substances 0.000 claims description 2
- 238000004891 communication Methods 0.000 abstract description 8
- 230000008878 coupling Effects 0.000 abstract description 7
- 238000010168 coupling process Methods 0.000 abstract description 7
- 238000005859 coupling reaction Methods 0.000 abstract description 7
- 238000002955 isolation Methods 0.000 description 14
- 238000010586 diagram Methods 0.000 description 7
- 238000003491 array Methods 0.000 description 5
- 238000013461 design Methods 0.000 description 4
- 238000011161 development Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000000704 physical effect Effects 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D30/00—Reducing energy consumption in communication networks
- Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks
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Abstract
The invention discloses a SIW antenna array loaded with butterfly-like left-handed material units, and relates to the field of wireless communication. An antenna element of a SIW antenna array loaded with butterfly-like left-handed material elements comprising: the top dielectric plate (1), the middle dielectric plate (2) and the bottom dielectric plate (3) are bonded to form the three-layer dielectric plate; the top dielectric plate (1) is provided with a metal patch (4), the middle layer (2) is provided with a U-shaped metal patch (5), and the bottom dielectric plate (3) is provided with a circle of periodic metal through holes (6) embedded into the dielectric substrate along the edge; two antenna units are linearly arranged and share a row of metal through holes; a partition wall (7) is erected between the two antenna elements, and the left-hand material elements (8, 8') are arranged in a 2X 3 array on the partition wall (7). The SIW antenna array loaded with the butterfly-like left-handed material units obviously reduces the coupling degree between the antenna units.
Description
Technical Field
The invention discloses a SIW antenna array for loading butterfly-shaped left-handed material units, belongs to the field of wireless communication, and relates to a SIW antenna array for loading butterfly-shaped left-handed material units.
Background
Left-hand materials are the most classical metamaterials and are defined as having both negative permittivity and negative permeability in certain frequency bands. Is composed of artificial unit structures with periodic dimensions much smaller than the operating wavelength, and such materials can exhibit extraordinary physical properties that are not possessed by natural materials.
With the rapid development of information technology, wireless communication technology can transmit and exchange information anytime and anywhere because it is not constrained by geographical environment, and is widely applied to the aspects of people's life and social development, and meanwhile, the diversification of wireless communication modes greatly facilitates people's life and work. In a wireless communication system which is visible everywhere, information is often transmitted through wireless electromagnetic waves, and an antenna is an important component in the wireless communication system, and the efficiency and quality of wireless communication are intuitively affected by the quality of the antenna. With the rapid growth of various communication systems today, the desire of the industry for achieving multiple performances and indexes of antennas simultaneously is increasing, and good performance parameters need to develop more novel and specific structures in the design of antennas, and high-quality plates are needed to support the antenna design, so that it is obvious that the cost of antennas is improved dramatically in an intangible way. However, the metamaterial can be used for solving the problem, and the loading of the metamaterial can be designed to control the cost of manufacturing the antenna and improve multiple performance parameters of the antenna, so that the metamaterial and the antenna are effectively combined, and the research on improving the performance parameters of the antenna has profound value and significance.
In recent years, many scholars have made substantial progress in applying metamaterials to antenna designs. The metamaterial is used as a brand new artificial electromagnetic material, has a series of peculiar physical properties such as negative refractive index, negative group velocity, inverse Doppler effect and the like, and can be applied to the traditional antenna design to remarkably improve the working performance of the antenna, such as gain improvement, bandwidth increase, miniaturization, realization of multiple frequency bands, reduction of coupling among antennas and the like. It is worth noting that the novel antenna based on the metamaterial not only can improve one index, but also can improve a plurality of indexes.
According to the SIW antenna array loaded with the butterfly-like left-handed material units, the butterfly-like left-handed material or the deformed butterfly-like left-handed material is loaded to serve as the isolation wall between the antenna units, so that isolation between the antennas is remarkably improved, and compared with the loading of the butterfly-like left-handed material, the isolation is higher.
The content of the invention is searched by the literature, and the same disclosure report as the invention is not found.
Disclosure of Invention
The invention aims to provide a SIW antenna array loaded with butterfly-like left-handed material units. The invention relates to an antenna unit of a SIW antenna array loaded with butterfly-like left-handed material units, which comprises: the top dielectric plate (1), the middle dielectric plate (2) and the bottom dielectric plate (3) are formed by bonding the three dielectric plates; the top dielectric plate (1) is provided with a metal patch (4) with a gap, the middle layer (2) is provided with a U-shaped metal patch (5), the bottom dielectric plate (3) is provided with a metal ground and a circle of periodic metal through holes (6) embedded into the dielectric substrate along the edge; the antenna units are arranged in a linear arrangement mode, and in order to reduce the size of the antenna, the two antenna units share a row of metal through holes; a partition wall (7) is erected between the two antenna units, and butterfly-like left-hand material units (8) or deformed butterfly-like left-hand material units (8') are placed on both sides of the partition wall in a 2×3 array arrangement.
The butterfly-like left-handed material unit (8) in the SIW antenna array loaded with the butterfly-like left-handed material unit comprises a dielectric plate (14) and a butterfly-like patch (15) printed on the dielectric plate (14); the butterfly-like patch (15) is composed of a patch (11, 11 ') with two wings like a butterfly, a hollowed diamond patch (12) in the middle and two hollowed trapezoid patches (13, 13 ') in the middle of the two wings of the patch (11, 11 '); the butterfly-like two-wing patches (11, 11 ') are symmetrically arranged along the middle diamond-shaped patches (12) and are opened towards the outer sides (16, 16 '), the lengths of the sides of the hollowed-out diamond-shaped patches (12) are equal, the two hollowed-out trapezoid-shaped patches (13, 13 ') in the middle of the two-wing patches (11, 11 ') are symmetrically arranged along the middle diamond-shaped patches (12), and the opening directions towards the inner sides (17, 17 ') are opposite to the opening directions of the two-wing patches, and the opening sizes are the same. The middle hollowed regular hexagonal diamond-shaped patches (12) are filled, and the rest of the regular hexagonal diamond-shaped patches are unchanged to obtain deformed butterfly-like left-handed material units (8').
The antenna unit of the SIW antenna array loaded with the butterfly-shaped left-handed material unit adopts coaxial feed to the top metal sheet (4), and three parts of radiation are respectively an upper metal patch (4), a middle metal patch (5) and gaps around the upper metal patch; due to the addition of the middle layer metal patch (5), the bandwidth is obviously widened, and the defect of narrow SIW bandwidth is overcome.
According to the SIW antenna array for loading the butterfly-like left-handed material units, the butterfly-like left-handed material or the deformed butterfly-like left-handed material is loaded to serve as a separation wall between the antenna units, so that the isolation between the antennas is remarkably improved, and the isolation is higher when the butterfly-like left-handed material is loaded and deformed than when the butterfly-like left-handed material is loaded.
The invention has the advantages of small size, simple structure, easy processing, high gain, low loss and the like.
Drawings
FIG. 1 is a schematic diagram of a SIW antenna array
Fig. 2 is a schematic diagram of a SIW antenna unit structure
FIG. 3 is a diagram of a butterfly-like and butterfly-like deformed left-handed material unit
FIG. 4S 11 contrast plot of a SIW antenna array loaded versus unloaded left-handed material elements
FIG. 5S 21 contrast plot of a SIW antenna array loaded versus unloaded left-handed material elements
Fig. 6 is a diagram of a SIW antenna array with a comparison of the patterns of loaded and unloaded left-handed material elements
Fig. 7 is a graph comparing radiation efficiency of loaded and unloaded left-handed material elements of the SIW antenna array.
Detailed Description
The present invention will be described in detail with reference to the accompanying drawings.
As shown in fig. 1 to 3, an antenna unit in a SIW antenna array loaded with butterfly-like left-hand material units according to the present invention includes: the top dielectric plate (1), the middle dielectric plate (2) and the bottom dielectric plate (3) are formed by bonding the three dielectric plates; the top dielectric plate (1) is provided with a metal patch (4) with a gap, the middle layer (2) is provided with a U-shaped metal patch (5), the bottom dielectric plate (3) is provided with a metal ground and a circle of periodic metal through holes (6) embedded into the dielectric substrate along the edge; the antenna units are arranged in a linear arrangement mode, and in order to reduce the size of the antenna, the two antenna units share a row of metal through holes; a partition wall (7) is erected between the two antenna units, and butterfly-like left-handed material units (8) or deformed butterfly-like left-handed material units (8') are arranged on two sides of the partition wall in a 2X 3 array arrangement mode; the butterfly-like left-handed material unit (8) is similar to a butterfly in overall outline, the middle of the butterfly-like left-handed material unit is a hollowed diamond, the middle of each wing is provided with two hollowed trapezoids with inward openings, the periphery of each wing is provided with a butterfly outline, the hollow trapezoids are opposite to the internal hollowed trapezoids, the regular hexagons in the middle are filled, and the rest of the butterfly-like left-handed material unit (8') is deformed.
The butterfly-like left-handed material unit (8) in the SIW antenna array loaded with the butterfly-like left-handed material unit comprises a dielectric plate (14) and a butterfly-like patch (15) printed on the dielectric plate (14); the butterfly-like patch (15) is composed of a patch (11, 11 ') with two wings like a butterfly, a hollowed diamond patch (12) in the middle and two hollowed trapezoid patches (13, 13 ') in the middle of the two wings of the patch (11, 11 '); the butterfly-like two-wing patches (11, 11 ') are symmetrically arranged along the middle diamond-shaped patches (12) and are opened towards the outer sides (16, 16 '), the lengths of the sides of the hollowed-out diamond-shaped patches (12) are equal, the two hollowed-out trapezoid-shaped patches (13, 13 ') in the middle of the two-wing patches (11, 11 ') are symmetrically arranged along the middle diamond-shaped patches (12), and the opening directions towards the inner sides (17, 17 ') are opposite to the opening directions of the two-wing patches, and the opening sizes are the same. The middle hollowed regular hexagonal diamond-shaped patches (12) are filled, and the rest of the regular hexagonal diamond-shaped patches are unchanged to obtain deformed butterfly-like left-handed material units (8').
The antenna unit of the SIW antenna array loaded with the butterfly-shaped left-handed material unit adopts coaxial feed to the top metal sheet (4), and three parts of radiation are respectively an upper metal patch (4), a middle metal patch (5) and gaps around the upper metal patch; due to the addition of the middle layer metal patch (5), the bandwidth is obviously widened, and the defect of narrow SIW bandwidth is overcome.
According to the SIW antenna array for loading the butterfly-like left-handed material units, the butterfly-like left-handed material or the deformed butterfly-like left-handed material is loaded to serve as a separation wall between the antenna units, so that the isolation between the antennas is remarkably improved, and the isolation is higher when the butterfly-like left-handed material is loaded and deformed than when the butterfly-like left-handed material is loaded.
The SIW antenna array loaded with the butterfly-like left-handed material unit is characterized in that a top dielectric plate (1) adopts a dielectric constant of 2.94, rogers RT/Duroid6002 dielectric material, and the size of the dielectric plate is 26.274 mm x 22.778 x 1.524mm; the interlayer dielectric plate (2) adopts a RogersRT/Duroid6002 dielectric material with a dielectric constant of 2.94 and a loss tangent of 0.0012, and the size of the dielectric material is 26.278mm x 22.778 x 0.762mm; the bottom dielectric plate (3) adopts a Rogers RT/Duroid6002 dielectric material with a dielectric constant of 2.94 and a loss tangent of 0.0012, and the size of the bottom dielectric plate is 26.278 x 23.778 x 0.762mm; an FR4 dielectric plate with the thickness of 0.8mm is adopted between two antenna units as a wall body loaded by left-handed materials, and the size of the loaded left-handed materials is 5 multiplied by 5mm 2 。
The invention has the advantages of small size, simple structure, easy processing, high gain, low loss and the like.
By means of simulation software, multiple adjustment experiments are carried out on the antenna, an S11 comparison diagram of three SIW antenna arrays which are not loaded with different left-hand material units is given in FIG. 4, and according to the diagram, the working bandwidth of the antenna array loaded with the butterfly-like left-hand material is 12.07GHz-15.15GHz, the S11 value at the first resonance frequency point of 12.45GHz is-22.6 dB, the S11 value at the second resonance frequency point of 14.72GHgz is-24.9 dB, the working bandwidth is slightly narrowed compared with the working bandwidth before the left-hand material is loaded, and the resonance frequencies of the two resonance points are moved to the central frequency point of the working frequency band, so that the S11 of the central frequency point of the working frequency band is obviously improved compared with the S11 without the left-hand material; the working bandwidth of the SIW antenna array loaded with the deformed butterfly-shaped left-handed material units is 12.02GHz-15.24GHz, the first resonance frequency point is 12.44GHz, the S11 value at the first resonance frequency point is 33dB, the frequency point of the second resonance point is 14.73GHz, the S11 value at the second resonance frequency point is 23.5dB, the working bandwidth of the antenna array is almost unchanged from the working bandwidths of the two front antenna arrays and the positions of the resonance points by comparison, better impedance matching is obtained at the first resonance point, and meanwhile, the S11 near the center frequency of the working frequency band of the antenna array is improved remarkably, because better isolation is obtained among the antenna units.
As shown in the S21 comparison diagram of the three SIW antenna arrays with different left-handed material units unloaded and loaded in fig. 5, the coupling degree between the antenna units is obviously reduced after the butterfly-like left-handed material is loaded compared with that before the loading, and is smaller than 25.4dB in the whole working frequency band, and the isolation degree is reduced by 5.2dB compared with that of the antenna units with no left-handed material; the SIW antenna array loaded with the deformed butterfly-shaped left-handed material unit obtains the lowest isolation, S21 of the SIW antenna array is below-31.9 dB in the whole working frequency band, the coupling degree of the SIW antenna array is reduced by 6.5dB compared with the SIW antenna array loaded with the deformed butterfly-shaped left-handed material unit, and the coupling degree of the SIW antenna array is reduced by 11.23dB compared with the SIW antenna array not loaded with the butterfly-shaped left-handed material unit, so that good isolation among the antenna units is realized, and the coupling degree among the antenna units is remarkably reduced.
As shown in the comparison of the patterns of the three SIW antenna arrays loaded with different left-handed material units and unloaded with fig. 6, where (a) is xoz-sided pattern and (b) is yoz-sided pattern, we can see from the figure that the loaded butterfly-like left-handed material antenna array reduces the coupling degree between the antennas, so that the gain of the antenna array is significantly higher than that of the unloaded left-handed material antenna array in the maximum direction of the pattern, the gain of the SIW antenna array loaded with butterfly-like left-handed material is 9.35dB, the gain of the SIW antenna array loaded with butterfly-like left-handed material is increased by 1.65dB compared with that of the SIW antenna array not loaded with butterfly-like left-handed material isolation wall, and the gain of the SIW antenna array loaded with deformed butterfly-like left-handed material isolation wall is up to 9.98dB.
As shown in fig. 7, which shows the comparison of the radiation efficiency of three SIW antenna arrays loaded with different left-handed material units, we can clearly see that the radiation efficiency of the antenna array loaded with butterfly-like left-handed material is slightly lower than that before being loaded, but the radiation efficiency is still kept above 90% in the whole working frequency band. The radiation efficiency of the SIW antenna array loaded with the deformed butterfly-shaped left-handed material floats up and down at 91% in the working frequency band, which is quite similar to the SIW antenna array loaded with the butterfly-shaped left-handed material, because the left-handed material for isolation is added, the radiation efficiency of the antenna is slightly affected, but the overall performance of the whole antenna array is not affected.
Claims (3)
1. The utility model provides a SIW antenna array of loading class butterfly left hand material unit which characterized in that: the antenna unit of the SIW antenna array includes: the top dielectric plate (1), the middle dielectric plate (2) and the bottom dielectric plate (3) are formed by bonding the three dielectric plates; the top layer dielectric plate (1) is provided with an upper layer metal patch (4) with a gap, the middle layer dielectric plate (2) is provided with a U-shaped metal patch (5), the bottom layer dielectric plate (3) is provided with a metal ground and a circle of periodic metal through holes (6) embedded into the dielectric substrate along the edge; the antenna units are arranged in a linear arrangement mode, and in order to reduce the size of the antenna, the two antenna units share a row of metal through holes; a partition wall (7) is erected between the two antenna units, and butterfly-like left-handed material units (8) are arranged on two sides of the partition wall in a 2X 3 array manner;
the butterfly-like left-handed material unit (8) loaded on the partition wall (7) between the two antenna units comprises a dielectric plate (14) and a butterfly-like patch (15) printed on the dielectric plate (14); the butterfly-like patch (15) is composed of a patch (11, 11 ') with two wings like a butterfly, a hollowed diamond patch (12) in the middle and two hollowed trapezoid patches (13, 13 ') in the middle of the two wings of the patch (11, 11 '); the butterfly-like two-wing patches (11, 11 ') are symmetrically arranged along the middle diamond-shaped patch (12) and open towards the outer sides (16, 16'); the length of each side of the hollowed-out diamond patch (12) is equal; two hollowed trapezoid patches (13, 13 ') in the middle of the two wing patches (11, 11 ') are symmetrically arranged along the diamond-shaped patches (12) in the middle, and are opened inwards (17, 17 '), the opening direction is opposite to the opening direction of the two wing patches, and the opening sizes are the same;
the radiation efficiency of the antenna array after being loaded with the butterfly-like left-handed material is kept above 90% in the whole working frequency band.
2. A SIW antenna array loaded with butterfly-like left-handed material elements as claimed in claim 1, wherein: the antenna unit adopts coaxial feed to an upper layer metal patch (4), and three parts radiate, namely an upper layer metal patch (4), a middle layer U-shaped metal patch (5) and gaps around the upper layer metal patch; as the U-shaped metal patch (5) of the middle layer is added, the bandwidth is obviously widened, and the defect of narrow SIW bandwidth is overcome.
3. A SIW antenna array loaded with butterfly-like left-handed material elements as claimed in claim 1, wherein: the top dielectric plate (1) is made of a dielectric material with a dielectric constant of 2.94 and a Rogers RT/Duroid6002, and has a size of 26.278mm x 22.778mm x 1.524mm; the interlayer dielectric plate (2) adopts a Rogers RT/Duroid6002 dielectric material with a dielectric constant of 2.94 and a loss tangent of 0.0012, and the size of the dielectric material is 26.278mm x 22.778mm x 0.762mm; the bottom dielectric plate (3) adopts a RogersRT/Duroid6002 dielectric material with a dielectric constant of 2.94 and a loss tangent of 0.0012, and the size of the bottom dielectric plate is 26.278mm x 23.778mm x 0.762mm; an FR4 dielectric plate with the thickness of 0.8mm is adopted between two antenna units as a wall body loaded by left-handed materials, and the size of the loaded left-handed materials is 5 multiplied by 5mm 2 。
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| CN109713443B true CN109713443B (en) | 2024-02-02 |
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| CN115189124B (en) * | 2022-07-12 | 2024-01-30 | 南通至晟微电子技术有限公司 | E-plane low-cross-coupling patch linear array antenna |
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| CN1874059A (en) * | 2005-05-31 | 2006-12-06 | 西北工业大学 | Medium base plate of left hand material in use for highly sensitive antenna of handset |
| CN205944428U (en) * | 2016-08-26 | 2017-02-08 | 桂林电子科技大学 | Loading graphite alkene decoupling network's microstrip array antenna |
| CN209675484U (en) * | 2019-01-07 | 2019-11-22 | 云南大学 | A kind of SIW aerial array of loading classes butterfly left-handed material unit |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| DE102004028432A1 (en) * | 2003-06-13 | 2004-12-30 | QEST Quantenelektronische Systeme Tübingen GmbH Sitz Böblingen | Superconducting quanta interference antenna has circuit elements within a thermally insulated area |
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| CN1874059A (en) * | 2005-05-31 | 2006-12-06 | 西北工业大学 | Medium base plate of left hand material in use for highly sensitive antenna of handset |
| CN205944428U (en) * | 2016-08-26 | 2017-02-08 | 桂林电子科技大学 | Loading graphite alkene decoupling network's microstrip array antenna |
| CN209675484U (en) * | 2019-01-07 | 2019-11-22 | 云南大学 | A kind of SIW aerial array of loading classes butterfly left-handed material unit |
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| Title |
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| Jing Xiang等.A broadband SIW antenna array at ku band with a low mutual coupling.《2018 IEEE MTT-S International Wireless Symposium (IWS)》.2018,第I-IV部分. * |
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