CN108390136A - The method for realizing strange mould artificial surface phasmon guided wave based on complementary trapezoidal shape slot - Google Patents
The method for realizing strange mould artificial surface phasmon guided wave based on complementary trapezoidal shape slot Download PDFInfo
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- CN108390136A CN108390136A CN201810061840.7A CN201810061840A CN108390136A CN 108390136 A CN108390136 A CN 108390136A CN 201810061840 A CN201810061840 A CN 201810061840A CN 108390136 A CN108390136 A CN 108390136A
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- artificial surface
- surface phasmon
- trapezoidal shape
- shape slot
- strange mould
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01P—WAVEGUIDES; RESONATORS, LINES, OR OTHER DEVICES OF THE WAVEGUIDE TYPE
- H01P1/00—Auxiliary devices
- H01P1/20—Frequency-selective devices, e.g. filters
- H01P1/201—Filters for transverse electromagnetic waves
- H01P1/203—Strip line filters
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Abstract
The invention belongs to microwave integrated circuits and device arts, disclose a kind of method that strange mould artificial surface phasmon guided wave is realized based on complementary trapezoidal shape slot, the dispersion characteristics of complementary trapezoidal shape slot structure are analyzed using Mode-solving techniques, the artificial surface phasmon of simulated optical frequency range naturally occurring, by the microstrip transition structure for building strange mould excitation, having devised in microwave frequency band there is intense beam to tie up effect and can support the artificial surface phasmon waveguide of strange mould transmission, and full-wave electromagnetic emulation is carried out, demonstrate its strange mould high efficiency of transmission effect in the artificial surface phasmon of microwave frequency band.The strange mould artificial surface phasmon waveguide of the present invention has the characteristics that thin efficiency of transmission height, thickness, light weight and easy processing, is had broad application prospects in novel microwave integrated circuit and devices field.
Description
Technical field
The invention belongs to microwave integrated circuits and device arts, more particularly to a kind of complementary trapezoidal shape slot that is based on to realize very
The method of mould artificial surface phasmon guided wave.
Background technology
Surface phasmon (surface plasmonpolaritons, SPPs) is a kind of surface electromagnetic wave, according to Mike
This Wei equation group derives it is found that it is present on the opposite two media interface of dielectric constant.Due in visible light frequency band, gold
Accessory has negative dielectric constant, and internal free electron is in plasma state, so there is under natural conditions in metal surface
Surface phasmon.But at lower frequencies, such as microwave frequency band, metal shows as perfect electric conductor rather than plasma
Body.In order to which in the following excitating surface phasmon of infrared frequency, the concept of plasma Meta Materials is come into being.Existing one kind
Ultra-thin plasma ripple structure can be supported similar to surface of visible light frequency band etc. in microwave and terahertz wave band from sharp
Member transmission, is referred to as artificial surface phasmon.But it is base mostly based on this theoretical artificial surface phasmon transmission
In even mould, the research for encouraging and transmitting about strange mould artificial surface phasmon is fewer and fewer.For existing technical solution,
There are the big defects of transmission loss, and can only could be encouraged by increasing other structures or changing the method for waveguide type at present
Unusual mould.The present invention can reduce transmission loss, bound stronger, can effectively reduce crosstalk in systems, conformal etc.
Application aspect has huge application prospect.
In conclusion problem of the existing technology is:Artificial surface phasmon transmission at present is based on even mould mostly
, the research for encouraging and transmitting about strange mould artificial surface phasmon is fewer and fewer.
Invention content
In view of the problems of the existing technology, the present invention provides one kind realizing strange mould artificial surface based on complementary trapezoidal shape slot
The method of phasmon guided wave.
The invention is realized in this way a kind of side realizing strange mould artificial surface phasmon guided wave based on complementary trapezoidal shape slot
Method, the method for realizing strange mould artificial surface phasmon guided wave based on complementary trapezoidal shape slot analyze complementation using Mode-solving techniques
The dispersion characteristics of trapezoid groove structure, the artificial surface phasmon of simulated optical frequency range naturally occurring;Build the micro- of strange mould excitation
Band transition structure obtains in microwave frequency band there is intense beam to tie up effect and can support the artificial surface phasmon wave of strange mould transmission
It leads.
Further, described to realize the method for strange mould artificial surface phasmon guided wave using complementation based on complementary trapezoidal shape slot
Trapezoid groove structure.
Further, the method for realizing strange mould artificial surface phasmon guided wave based on complementary trapezoidal shape slot uses micro-strip-
The feed structure of line of rabbet joint coupled mode composition.
Another object of the present invention is to provide be based on complementary trapezoidal shape slot described in one kind to realize strange mould artificial surface etc. from sharp
The artificial surface phasmon waveguiding structure of the method for first guided wave, the artificial surface phasmon waveguiding structure are provided with:
Complementary trapezoidal shape slot unit;
The complementary trapezoidal shape slot cellular construction is made of two dovetail grooves of mirror symmetry.
Further, the trapezoidal groove depth is d=5mm, and the spacing of complementary structure is g=1.5mm;The upper bottom of dovetail groove
Respectively a1=0.6mm, a2=3mm;The period of cellular construction is p=5mm.
Strange mould artificial surface etc. being realized based on complementary trapezoidal shape slot using described another object of the present invention is to provide a kind of
The plasma Meta Materials of method from excimer guided wave.
The artificial surface phasmon transmission line of complementary structure provided by the invention, cellular construction on the metal line of rabbet joint by carving
The complementary dovetail groove composition of erosion two, according to eigen mode simulation analysis dispersion characteristics it is found that its dispersion curve is increased with frequency
It is gradually deviated from light and levels off to specific cutoff frequency.Show that artificial surface etc. may be implemented in structure proposed by the invention
From polariton modes.Compared to traditional rectangular groove structure, stronger field containment effect may be implemented in trapezoid groove structure.
The present invention utilizes the energisation mode that micro-strip is coupled with the line of rabbet joint, its strange mould pattern is encouraged on the line of rabbet joint, passes through gradual change
Trapezoidal groove and the line of rabbet joint line width gradually to broaden realize impedance matching and the wave vector of the line of rabbet joint and artificial surface phasmon structure
Match.
Compared with prior art, the present invention has following advantage:
The present invention realizes the strange mould transmission form of artificial surface phasmon of microwave frequency band, field using complementary trapezoidal shape slot structure
It is apparent to fetter effect, is conducive to integrated low crosstalk artificial surface phasmon device circuitry;Feed structure is simple, easy to process,
It is at low cost, it is light-weight.Traditional strange mould feed structure needs complicated feeding network to realize impedance matching.In contrast, this hair
The bright single layer microstrip structure fabrication processes used are relatively easy, not only save cost, but also avoid complex process steps initiation
Mismachining tolerance.
The present invention has efficient broadband characteristic.In frequency range from low frequency to cutoff frequency, the transmission of artificial surface phasmon
The transmission coefficient of line is more than -1.5dB and reflectance factor is less than -10dB, shows its efficient broadband characteristic.It is of the present invention
Dielectric substrate thickness is only 0.813mm, therefore entire array has the characteristics that frivolous, can be obtained in the limited project of many weight
To being widely applied very much.
The Novel manual electromagnetic material of the present invention refers to a kind of extraordinary physical property with not available for natural medium
Artificial composite structure or Composite Media reach the mesh of control material electromagnetic property by changing cellular construction and its space arrangement
's;By its cellular construction of engineer, the electricity such as effective dielectric constant, magnetic conductivity, refractive index, the wave impedance of material can be controlled
Magnetic parameter realizes the property that material does not have existing for nature.
Description of the drawings
Fig. 1 is the side provided in an embodiment of the present invention that strange mould artificial surface phasmon guided wave is realized based on complementary trapezoidal shape slot
Method flow chart.
Fig. 2 is the artificial surface phasmon waveguide of complementary trapezoidal shape ripple struction provided in an embodiment of the present invention and specific knot
Structure scale diagrams.
Fig. 3 is the color of the corresponding artificial surface phasmon waveguide of different trapezoidal bottom edge lengths provided in an embodiment of the present invention
Non-dramatic song line contrast schematic diagram.
Fig. 4 is that conventional microstrip circuit provided in an embodiment of the present invention and the changeover portion of artificial surface phasmon waveguide are illustrated
Figure.
Fig. 5 is the full-wave simulation S parameter schematic diagram of artificial surface phasmon transition structure provided in an embodiment of the present invention.
Fig. 6 is the Electric Field Simulation near field of artificial surface phasmon waveguide provided in an embodiment of the present invention at different frequencies
Schematic diagram.
Specific implementation mode
In order to make the purpose , technical scheme and advantage of the present invention be clearer, with reference to embodiments, to the present invention
It is further elaborated.It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, it is not used to
Limit the present invention.
The present invention realizes that artificial surface phasmon transmits using complementary trapezoidal shape slot, and waveguide is arrived by even mould micro-strip excitation
Transition realizes the strange mould excitation of artificial surface phasmon, is used for the surface wave transmission of microwave frequency band, belongs to novel artificial electromagnetism
Material Field.
The application principle of the present invention is explained in detail below in conjunction with the accompanying drawings.
As shown in Figure 1, provided in an embodiment of the present invention realize that strange mould artificial surface phasmon is led based on complementary trapezoidal shape slot
The method of wave includes the following steps:
S101:The dispersion characteristics of complementary trapezoidal shape slot structure, simulated optical frequency range naturally occurring are analyzed using Mode-solving techniques
Artificial surface phasmon;
S102:The microstrip transition structure for building strange mould excitation, obtains in microwave frequency band there is intense beam to tie up effect and can prop up
Hold the artificial surface phasmon waveguide of strange mould transmission.
The application principle of the present invention is further described below in conjunction with the accompanying drawings.
Fig. 2 is novel artificial surface plasmon waveguide structure size schematic diagram proposed by the present invention.Complementary trapezoidal shape slot
Cellular construction is made of two dovetail grooves of mirror symmetry, and the position relationship of structure has a groove depth d=5mm, between complementary structure
It is respectively a1=0.6mm away from the upper bottom for g=1.5mm, dovetail groove, the period of a2=3mm. cellular constructions is p=5mm.
The position effect of wherein parameter designing is the cutoff frequency that can be used for adjusting artificial surface phasmon.
Fig. 3 is that have different base widths using what the eigen mode solver in business software CST microwave studios acquired
The corresponding dispersion curve of cellular construction of a2.With the comparison of the dispersion curve of light it is found that all its dispersion curves of notching construction
Light is deviated considerably from frequency increase and levels off to respectively different cutoff frequency, shows that trapezoid groove structure has artificial surface
The distinctive field containment effect of phasmon.And compared to general rectangular groove structure, the field containment ability of trapezoid groove structure is more
Add significantly.
Fig. 4 is the feed and transition structure of novel plasma waveguide provided by the invention.The feed of micro-strip-line of rabbet joint coupling
Mode can encourage apparent strange mould pattern to be realized by the line of rabbet joint line width of gradual change and the groove of gradient on the line of rabbet joint
Impedance matching between different transmission line structures and pattern conversion.
Novel artificial surface obtained using the full-wave simulation of CST microwave studios etc. is set forth from sharp in Fig. 5, Fig. 6
Corresponding electric field near field distribution figure under the scattering parameter S21 and S11 and 3GHz, 4GHz, 5GHz and 6GHz of first waveguide.By emulating
As a result it is found that transmission coefficient S21 is in passband can reach -1.5dB and reflectance factor S11 is less than -10dB, show it in passband
Interior good transmission characteristic.Near field distribution figure can significantly observe the field containment effect of artificial surface phasmon, and
Electric field fragrance on the waveguiding structure of mirror symmetry is just the opposite, shows the exactly strange mould of its transmission.
The present invention is by realizing the artificial surface of microwave frequency band in the metal etch groove for being printed on ultra-thin medium substrate
The transmission of phasmon, and complementary structure can support efficient strange mould transmission.Pass through dovetail groove known to eigen mode emulation
The dispersion characteristics of structure are fairly obvious, and compared to traditional rectangular groove structure, the field containment effect of surface phasmon is more
Obviously, thus it is advantageously implemented the highly integrated of circuit.The changeover portion being made of the groove structure of depth-graded is in the even mould of transmission
Micro-strip and the artificial surface phasmon of the strange mould of transmission between serve as the effect of impedance matching and pattern conversion.Micro-strip-the line of rabbet joint
Coupling strange mould energisation mode it is simple in structure, broadband and efficiently.Numerical Simulation Results also show provided by the invention based on mutual
The artificial surface phasmon waveguide for mending trapezoid groove structure has higher efficiency of transmission.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all essences in the present invention
All any modification, equivalent and improvement etc., should all be included in the protection scope of the present invention made by within refreshing and principle.
Claims (6)
1. a kind of method for realizing strange mould artificial surface phasmon guided wave based on complementary trapezoidal shape slot, which is characterized in that the base
In the method that complementary trapezoidal shape slot realizes strange mould artificial surface phasmon guided wave complementary trapezoidal shape slot knot is analyzed using Mode-solving techniques
The dispersion characteristics of structure, the artificial surface phasmon of simulated optical frequency range naturally occurring;Build the microstrip transition knot of strange mould excitation
Structure obtains in microwave frequency band there is intense beam to tie up effect and can support the artificial surface phasmon waveguide of strange mould transmission.
2. the method for realizing strange mould artificial surface phasmon guided wave based on complementary trapezoidal shape slot as described in claim 1, special
Sign is, described to realize the method for strange mould artificial surface phasmon guided wave using complementary dovetail groove knot based on complementary trapezoidal shape slot
Structure.
3. the method for realizing strange mould artificial surface phasmon guided wave based on complementary trapezoidal shape slot as described in claim 1, special
Sign is, described to realize the method for strange mould artificial surface phasmon guided wave using micro-strip-line of rabbet joint coupling based on complementary trapezoidal shape slot
The feed structure of form composition.
4. a kind of people of method that realizing strange mould artificial surface phasmon guided wave based on complementary trapezoidal shape slot as described in claim 1
Work surface plasmon waveguide structure, which is characterized in that the artificial surface phasmon waveguiding structure is provided with:
Complementary trapezoidal shape slot unit;
The complementary trapezoidal shape slot cellular construction is made of two dovetail grooves of mirror symmetry.
5. artificial surface phasmon waveguiding structure as claimed in claim 4, which is characterized in that the trapezoidal groove depth is d=
The spacing of 5mm, complementary structure are g=1.5mm;The upper bottom of dovetail groove is respectively a1=0.6mm, a2=3mm;Cellular construction
Period be p=5mm.
6. a kind of realizing strange mould artificial surface phasmon using described in claims 1 to 3 any one based on complementary trapezoidal shape slot
The plasma Meta Materials of the method for guided wave.
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Cited By (5)
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CN109244609A (en) * | 2018-09-11 | 2019-01-18 | 区庆元 | A kind of square groove structure microwave filter with dual band operation characteristic |
CN109742503A (en) * | 2019-01-11 | 2019-05-10 | 东南大学 | Based on the cross talk restraining method and structure between artificial SPP transmission line and microstrip line |
CN109768384A (en) * | 2019-01-23 | 2019-05-17 | 西安电子科技大学 | Based on odd mould artificial surface phasmon broadband end-on-fire antenna, wireless communication system |
CN113488751A (en) * | 2021-06-24 | 2021-10-08 | 电子科技大学 | Rectangular waveguide-artificial surface plasmon polariton transition structure |
CN115097216A (en) * | 2022-06-20 | 2022-09-23 | 广东柏兹电子科技有限公司 | Dispersion curve measuring method and system of artificial surface plasmon transmission line |
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Cited By (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN109244609A (en) * | 2018-09-11 | 2019-01-18 | 区庆元 | A kind of square groove structure microwave filter with dual band operation characteristic |
CN109244609B (en) * | 2018-09-11 | 2019-10-29 | 区庆元 | A kind of square groove structure microwave filter with dual band operation characteristic |
CN109742503A (en) * | 2019-01-11 | 2019-05-10 | 东南大学 | Based on the cross talk restraining method and structure between artificial SPP transmission line and microstrip line |
CN109742503B (en) * | 2019-01-11 | 2021-04-27 | 东南大学 | Crosstalk suppression method and structure between transmission line and microstrip line based on artificial SPP |
CN109768384A (en) * | 2019-01-23 | 2019-05-17 | 西安电子科技大学 | Based on odd mould artificial surface phasmon broadband end-on-fire antenna, wireless communication system |
CN113488751A (en) * | 2021-06-24 | 2021-10-08 | 电子科技大学 | Rectangular waveguide-artificial surface plasmon polariton transition structure |
CN113488751B (en) * | 2021-06-24 | 2022-06-03 | 电子科技大学 | Rectangular waveguide-artificial surface plasmon polariton transition structure |
CN115097216A (en) * | 2022-06-20 | 2022-09-23 | 广东柏兹电子科技有限公司 | Dispersion curve measuring method and system of artificial surface plasmon transmission line |
CN115097216B (en) * | 2022-06-20 | 2024-06-21 | 广东柏兹电子科技有限公司 | Dispersion curve measurement method and system for artificial surface plasmon transmission line |
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