CN100566015C - A kind of wide-frequency-band double-way-band incongruous medium transmission wire - Google Patents
A kind of wide-frequency-band double-way-band incongruous medium transmission wire Download PDFInfo
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- CN100566015C CN100566015C CNB2006100100471A CN200610010047A CN100566015C CN 100566015 C CN100566015 C CN 100566015C CN B2006100100471 A CNB2006100100471 A CN B2006100100471A CN 200610010047 A CN200610010047 A CN 200610010047A CN 100566015 C CN100566015 C CN 100566015C
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Abstract
A kind of wide-frequency-band double-way-band incongruous medium transmission wire, it relates to the anisotropic media technical field, and it has solved, and existing anisotropic media transmission line electricity size is big, the problem of processing difficulties, cost height, narrow bandwidth.Anisotropic media transmission line of the present invention is made of a plurality of anisotropic media units in series, the centre of the upper surface of ground floor dielectric-slab (1) is etched with a metal band (1-1) along the Y direction in each anisotropic media unit, and the first square aperture becket (1-3) and the second square aperture becket (1-2) are that symmetry axis is symmetrical arranged with metal band (1-1); The centre of the upper surface of second layer dielectric-slab (2) is etched with third party's shape opening becket (2-1) and square opening becket (2-2) along directions X; Underlying metal paper tinsel (3) is provided with two identical and be interconnected square through holes.Anisotropic media transmission line of the present invention has the bilateral frequency bandwidth characteristics, and unit volume is little, handling ease, with low cost, and bandwidth is wide, loss is little.
Description
Technical field
The present invention relates to the anisotropic media technical field.
Background technology
Anisotropic media is the artificial electromagnetic medium of a kind of novel periodic structure of phase late 1990s appearance, it has the dielectric constant of negative value and the magnetic permeability of negative value simultaneously, cause the electromagnetic electric field E that in this medium, propagates, magnetic field H and wave vector k three constitute left-handed system, rather than follow the right-hand rule of conventional medium, anisotropic media so it is otherwise known as.The notion blank of anisotropic media need be traced back to the sixties in 20th century, the physicist Veselago of the former Soviet Union studies it first theoretically, and foretold that anisotropic media has a series of unconventional electromagnetic propertys, comprise: left hand characteristic, the negative refraction characteristic, contrary Doppler effect, contrary Cerenkov radiation effect etc.Because occurring in nature is not found anisotropic media,, the anisotropic media theory rests on theoretical aspect so lacking experiment confirm in after this nearly 30 years time always.Smith passed through thin wire array and opening side's ring array rational deployment have been produced anisotropic media for the first time in history based on the result of study of Pendry in 2000, and this breakthrough achievement makes the research in this field enter substantial period.Yet above-mentioned anisotropic media because of its complex structure, narrow bandwidth, loss is big and bulky problem makes it apart from practical application bigger gap be arranged.
Based on this situation, a lot of scholars launch research at novel anisotropic media design aspect.Up to the present there has been the anisotropic media of multiple new structure to be designed, manufactured out, comprising the transmission line structure anisotropic media, construction unit is the anisotropic media of Ω shape, the anisotropic media of opening side's ring structure, construction unit is the anisotropic media of S type, two S shapes, construction unit is the anisotropic media of spiral type, and anisotropic media that constitutes etc. is alternated by CLSs and CLLs.Though the new structure of anisotropic media emerges in an endless stream, but they can reduce two big classes: a class is based on the improvement or the derived structure of opening side's ring structure of Smith professor, the another kind of transmission line structure anisotropic media that is based on improves or derived structure, especially it is to be noted, the transmission line structure anisotropic media is employed with a kind of form with transmission line of anisotropic media electromagnetic property more owing to it, so its anisotropic media transmission line that is otherwise known as.The relative bandwidth of initial anisotropic media very narrow (about 0.5%), size big (about 0.2 wavelength), and be unsuitable for processing, performance has had very big improvement through the improvement that continues and after deriving.For example the construction unit that was proposed in 2005 by scholars such as Chen Kangsheng is the left-handed medium of two S shapes, and its working band is from 10～16GHz, and relative bandwidth reaches 46%; People such as Smith passed through to optimize SRRs and thin wire size in 2004, had designed the low-loss left-handed medium of unit loss less than 0.3dB.Yet regrettably still there is bigger restriction in these construction units in application facet, because for the negative permittivity and the negative magnetoconductivity that can inspire cellular construction, these cellular constructions all have strict requirement to the direction in electric field and magnetic field, cause these anisotropic media unit only to obtain shooting condition easily in the application scenario of cavity body structure, application scenario for microwave or millimeter-wave planar circuit devcie is then convenient not as the anisotropic media transmission line, yet the electric size of this cellular construction is bigger, have in addition near 0.2 wavelength.Traditional anisotropic media transmission line is consistent with early stage anisotropic media in itself.Because in the equivalent electric circuit of transmission line structure, usually can access the equivalent inductance and the equivalent capacity in parallel of series connection, they have represented the effective permeability and the effective dielectric constant of transmission line in fact, as long as therefore can realize the equivalent inductance of negative value and the equivalent capacity of negative value with transmission line, and negative inductance is exactly electric capacity in essence, on the negative capacitive nature is exactly inductance, just can realize left hand transmission line as long as therefore can realize the electric capacity of series connection and inductance in parallel in the equivalent electric circuit of transmission line.But equivalent capacity that obtains to connect and equivalent inductance in parallel also are not easy, and some anisotropic media transmission line is in order to obtain them even by expensive technological means such as LTCC at present.
Summary of the invention
Existing anisotropic media transmission line electricity size is big in order to solve, the problem of processing difficulties, cost height, narrow bandwidth, the invention provides a kind of wide-frequency-band double-way-band incongruous medium transmission wire.
Wide-frequency-band double-way-band incongruous medium transmission wire of the present invention is made of at least one anisotropic media unit, and each anisotropic media unit is made of ground floor dielectric-slab, second layer dielectric-slab and the punching press of underlying metal paper tinsel together; The centre of the upper surface of described ground floor dielectric-slab is etched with a metal band along the Y direction, the centre of the upper surface of described ground floor dielectric-slab is etched with the first square aperture becket and the second square aperture becket along directions X, the shape of the described first square aperture becket and the second square aperture becket is the shape that a square metal ring removes the remaining symmetry of the part on a limit, described first square aperture becket and the described second square aperture becket are that symmetry axis is symmetrical arranged with described metal band, and the described dorsad metal band of opening of the described first square aperture becket and the second square aperture becket, the lower surface of described ground floor dielectric-slab contacts with the upper surface of second layer dielectric-slab; The centre of the upper surface of described second layer dielectric-slab is etched with third party's shape opening becket and square opening becket along directions X, the shape of described third party's shape opening becket and square opening becket is the shape that a square metal ring removes the remaining symmetry of the part on a limit, described third party's shape opening becket be positioned at the described first square aperture becket under, and third party's shape opening becket is opposite with the opening direction of the first square aperture becket, described square opening becket be positioned at the described second square aperture becket under, and the opening direction of the square opening becket and the second square aperture becket is opposite, and the lower surface of described second layer dielectric-slab contacts with the upper surface of described underlying metal paper tinsel; Described underlying metal paper tinsel is provided with the square through hole that two sizes are identical and be interconnected, two square through holes of described underlying metal paper tinsel lay respectively at described third party's shape opening becket and square opening becket under, described directions X is vertical mutually with described Y direction.When the anisotropic media transmission line was made of two and two above anisotropic media unit, a plurality of anisotropic medias unit was cascaded mutually along the length direction of metal band, and promptly a plurality of anisotropic medias unit is cascaded mutually along the Y direction.
The present invention has realized the split ring resonator structure on space structure, the underlying metal paper tinsel is imperfect ground structure, is a kind of development form of photonic band gap structure.The present invention can realize by traditional PCB processing technology, is fit to low-cost production in enormous quantities fully.Anisotropic media transmission line of the present invention has the bilateral frequency bandwidth characteristics, and unit volume is little, handling ease, with low cost, and bandwidth is wide, loss is little, and it has a good application prospect on the microwave and millimeter wave circuit devcie.
Description of drawings
Fig. 1 is side, an anisotropic media of the present invention unit structural representation, Fig. 2 is an anisotropic media of the present invention unit perspective view, Fig. 3 is the structural representation of ground floor dielectric-slab 1 of the present invention, Fig. 4 is the structural representation of second layer dielectric-slab 2 of the present invention, and Fig. 5 is the structural representation of underlying metal paper tinsel 3 of the present invention.
Embodiment
Embodiment one: referring to Fig. 1 to Fig. 5, the wide-frequency-band double-way-band incongruous medium transmission wire of this embodiment is made of a plurality of anisotropic medias unit, each anisotropic media unit is made of ground floor dielectric-slab 1, second layer dielectric- slab 2 and 3 punching presses of underlying metal paper tinsel together, as shown in Figure 2; As shown in Figure 3, the centre of the upper surface of described ground floor dielectric-slab 1 is etched with a metal band 1-1 along the Y direction, the centre of the upper surface of described ground floor dielectric-slab 1 is etched with the first square aperture becket 1-3 and the second square aperture becket 1-2 along directions X, the shape of the described first square aperture becket 1-3 and the second square aperture becket 1-2 is the shape that a square metal ring removes the remaining symmetry of the part on a limit, the shape of the described first square aperture becket described third party's shape opening becket 2-1 and square opening becket 2-2 is the shape that a square metal ring removes the remaining symmetry of the part on a limit, 1-3 and the described second square aperture becket 1-2 are that symmetry axis is symmetrical arranged with described metal band 1-1, and the described dorsad metal band 1-1 of opening of the described first square aperture becket 1-3 and the second square aperture becket 1-2, the lower surface of described ground floor dielectric-slab 1 contacts with the upper surface of second layer dielectric-slab 2; As shown in Figure 4, the centre of the upper surface of described second layer dielectric-slab 2 is etched with third party's shape opening becket 2-1 and square opening becket 2-2 along directions X, the shape of described third party's shape opening becket 2-1 and square opening becket 2-2 is the shape that a square metal ring removes the remaining symmetry of the part on a limit, described third party's shape opening becket 2-1 be positioned at the described first square aperture becket 1-3 under, and 2-1 is opposite with the opening direction of the first square aperture becket 1-3 for third party's shape opening becket, described square opening becket 2-2 be positioned at the described second square aperture becket 1-2 under, and the opening direction of the square opening becket 2-2 and the second square aperture becket 1-2 is opposite, and the lower surface of described second layer dielectric-slab 2 contacts with the upper surface of described underlying metal paper tinsel 3; As shown in Figure 5, described underlying metal paper tinsel 3 is provided with the square through hole that two sizes are identical and be interconnected, two square through holes of described underlying metal paper tinsel 3 lay respectively at described third party's shape opening becket 2-1 and square opening becket 2-2 under, described directions X is vertical mutually with described Y direction; A plurality of anisotropic medias unit is cascaded mutually along the length direction of metal band 1-1, and promptly a plurality of anisotropic medias unit is cascaded mutually along the Y direction.Described metal band 1-1 is the copper metal band; The described first square aperture becket 1-3, the second square aperture becket 1-2, third party's shape opening becket 2-1 and square opening becket 2-2 are copper metal Fang Huan.The described first square aperture becket 1-3, the second square aperture becket 1-2, third party's shape opening becket 2-1 and square opening becket 2-2's is big or small identical.Three cross sections that described ground floor dielectric-slab 1, second layer dielectric-slab 2 and underlying metal paper tinsel 3 are cut into by the XY plane respectively are three squares that size is identical.
In this embodiment, described ground floor dielectric-slab 1 employing relative dielectric constant is 10.2 RT-Duroid dielectric-slab; Described second layer dielectric-slab 2 employing relative dielectric constants are Teflon (Teflon) dielectric-slabs of 2.54; The bandwidth d of all square aperture beckets
1=0.35～0.45mm, extended distance d
2Length d on=0.70～0.80mm, the directions X
3=3.10～3.20mm; Described ground floor dielectric-slab 1 and second layer dielectric-slab 2 are respectively 0.585～0.685mm and 0.49～0.59mm along the thickness of Z direction; As shown in Figure 5, the square through hole that is connected on the described underlying metal paper tinsel 3 is of a size of d
4=0.2～0.3mm, d
5=2.45～2.55mm, d
6=1.15～1.25mm.The anisotropic media transmission line of this embodiment has two passbands, and it is in 4.90～5.9GHz and 6～10GHz respectively, and its relative bandwidth is respectively 18.3% and 50%, and its electricity is of a size of 0.09 at the centre frequency place.
Embodiment two: this embodiment with the difference of embodiment one is: as shown in Figure 3, and the described dorsad metal band 1-1 of opening of the described first square aperture becket 1-3 and the second square aperture becket 1-2; As shown in Figure 4, described third party's shape opening becket 2-1 is relative with the opening of square opening becket 2-2.Other compositions are identical with embodiment one with annexation.
Claims (6)
1, a kind of wide-frequency-band double-way-band incongruous medium transmission wire, it is characterized in that described anisotropic media transmission line is made of at least one anisotropic media unit, each anisotropic media unit is made of ground floor dielectric-slab (1), second layer dielectric-slab (2) and underlying metal paper tinsel (3) punching press together; The centre of the upper surface of described ground floor dielectric-slab (1) is etched with a metal band (1-1) along the Y direction, the centre of the upper surface of described ground floor dielectric-slab (1) is etched with the first square aperture becket (1-3) and the second square aperture becket (1-2) along directions X, the shape of the described first square aperture becket (1-3) and the second square aperture becket (1-2) is the shape that a square metal ring removes the remaining symmetry of the part on a limit, described first square aperture becket (1-3) and the described second square aperture becket (1-2) are that symmetry axis is symmetrical arranged with described metal band (1-1), and the described dorsad metal band of opening (1-1) of the described first square aperture becket (1-3) and the second square aperture becket (1-2), the lower surface of described ground floor dielectric-slab (1) contacts with the upper surface of second layer dielectric-slab (2); The centre of the upper surface of described second layer dielectric-slab (2) is etched with third party's shape opening becket (2-1) and square opening becket (2-2) along directions X, the shape of described third party's shape opening becket (2-1) and square opening becket (2-2) is the shape that a square metal ring removes the remaining symmetry of the part on a limit, described third party's shape opening becket (2-1) be positioned at the described first square aperture becket (1-3) under, and third party's shape opening becket (2-1) is opposite with the opening direction of the first square aperture becket (1-3), described square opening becket (2-2) be positioned at the described second square aperture becket (1-2) under, and the opening direction of the square opening becket (2-2) and the second square aperture becket (1-2) is opposite, and the lower surface of described second layer dielectric-slab (2) contacts with the upper surface of described underlying metal paper tinsel (3); Described underlying metal paper tinsel (3) is provided with the square through hole that two sizes are identical and be interconnected, two square through holes of described underlying metal paper tinsel (3) lay respectively at described third party's shape opening becket (2-1) and square opening becket (2-2) under, described directions X is vertical mutually with described Y direction.
2, a kind of wide-frequency-band double-way-band incongruous medium transmission wire according to claim 1, it is characterized in that a plurality of anisotropic medias unit is cascaded mutually along the length direction of metal band (1-1) when the anisotropic media transmission line is made of two and two above anisotropic media unit.
3, a kind of wide-frequency-band double-way-band incongruous medium transmission wire according to claim 1 is characterized in that described metal band (1-1) is the copper metal band.
4, a kind of wide-frequency-band double-way-band incongruous medium transmission wire according to claim 1 is characterized in that the described first square aperture becket (1-3), the second square aperture becket (1-2), third party's shape opening becket (2-1) and square opening becket (2-2) all are copper metal Fang Huan.
5, a kind of wide-frequency-band double-way-band incongruous medium transmission wire according to claim 1 is characterized in that the big or small identical of the described first square aperture becket (1-3), the second square aperture becket (1-2), third party's shape opening becket (2-1) and square opening becket (2-2).
6, a kind of wide-frequency-band double-way-band incongruous medium transmission wire according to claim 1 is characterized in that three cross sections that described ground floor dielectric-slab (1), second layer dielectric-slab (2) and underlying metal paper tinsel (3) are cut into by the XY plane respectively are three squares that size is identical.
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| Application Number | Priority Date | Filing Date | Title |
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| CNB2006100100471A CN100566015C (en) | 2006-05-17 | 2006-05-17 | A kind of wide-frequency-band double-way-band incongruous medium transmission wire |
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| CNB2006100100471A CN100566015C (en) | 2006-05-17 | 2006-05-17 | A kind of wide-frequency-band double-way-band incongruous medium transmission wire |
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| CN100566015C true CN100566015C (en) | 2009-12-02 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JP5045349B2 (en) * | 2007-10-01 | 2012-10-10 | パナソニック株式会社 | Left-handed filter |
| CN102354815B (en) * | 2011-09-22 | 2013-12-25 | 中国人民解放军空军工程大学 | Broadband low-consumption left-handed material based on inclined triangular opening paired loops |
| CN106568401B (en) * | 2016-10-27 | 2019-02-19 | 浙江大学 | A kind of device for realizing reversed Doppler effect |
| CN112310649B (en) * | 2020-11-09 | 2021-07-16 | 电子科技大学 | Ultralow-profile low-scattering ultra-wideband phased array based on electromagnetic metamaterial loading |
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Non-Patent Citations (4)
| Title |
|---|
| 一种新型人工异向介质结构的设计和仿真. 皇甫江涛，冉立新，陈抗生.浙江大学学报(工学版)，第39卷第4期. 2005 |
| 一种新型人工异向介质结构的设计和仿真. 皇甫江涛，冉立新，陈抗生.浙江大学学报(工学版)，第39卷第4期. 2005 * |
| 高斯波束在异向介质棱镜中的折射. 陈红胜，皇甫江涛，冉立新，章献民，陈抗生，孔金瓯.浙江大学学报(工学版)，第38卷第12期. 2004 |
| 高斯波束在异向介质棱镜中的折射. 陈红胜，皇甫江涛，冉立新，章献民，陈抗生，孔金瓯.浙江大学学报(工学版)，第38卷第12期. 2004 * |
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