CN108598652B - Microwave power distributor based on magnetic surface plasmon - Google Patents
Microwave power distributor based on magnetic surface plasmon Download PDFInfo
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- CN108598652B CN108598652B CN201810706910.XA CN201810706910A CN108598652B CN 108598652 B CN108598652 B CN 108598652B CN 201810706910 A CN201810706910 A CN 201810706910A CN 108598652 B CN108598652 B CN 108598652B
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- soft magnetic
- ferrite
- metal cavity
- microwave power
- permanent magnet
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- 229910052751 metal Inorganic materials 0.000 claims abstract description 49
- 239000002184 metal Substances 0.000 claims abstract description 49
- 229910000859 α-Fe Inorganic materials 0.000 claims abstract description 48
- 239000000523 sample Substances 0.000 claims abstract description 16
- 239000006096 absorbing agent Substances 0.000 claims description 11
- 238000003491 array Methods 0.000 claims description 10
- 239000002223 garnet Substances 0.000 claims description 5
- MTRJKZUDDJZTLA-UHFFFAOYSA-N iron yttrium Chemical compound [Fe].[Y] MTRJKZUDDJZTLA-UHFFFAOYSA-N 0.000 claims description 5
- QJVKUMXDEUEQLH-UHFFFAOYSA-N [B].[Fe].[Nd] Chemical compound [B].[Fe].[Nd] QJVKUMXDEUEQLH-UHFFFAOYSA-N 0.000 claims description 3
- 229910001172 neodymium magnet Inorganic materials 0.000 claims description 3
- 229910001053 Nickel-zinc ferrite Inorganic materials 0.000 claims description 2
- JMXCGRZQBOMCBD-UHFFFAOYSA-N magnesium;iron(3+);manganese(2+);oxygen(2-) Chemical compound [O-2].[O-2].[O-2].[O-2].[O-2].[Mg+2].[Mn+2].[Fe+3].[Fe+3] JMXCGRZQBOMCBD-UHFFFAOYSA-N 0.000 claims description 2
- AJCDFVKYMIUXCR-UHFFFAOYSA-N oxobarium;oxo(oxoferriooxy)iron Chemical compound [Ba]=O.O=[Fe]O[Fe]=O.O=[Fe]O[Fe]=O.O=[Fe]O[Fe]=O.O=[Fe]O[Fe]=O.O=[Fe]O[Fe]=O.O=[Fe]O[Fe]=O AJCDFVKYMIUXCR-UHFFFAOYSA-N 0.000 claims description 2
- 229910052712 strontium Inorganic materials 0.000 claims description 2
- CIOAGBVUUVVLOB-UHFFFAOYSA-N strontium atom Chemical compound [Sr] CIOAGBVUUVVLOB-UHFFFAOYSA-N 0.000 claims description 2
- 238000002955 isolation Methods 0.000 abstract description 13
- 230000002441 reversible effect Effects 0.000 abstract description 11
- 230000015572 biosynthetic process Effects 0.000 abstract description 4
- 238000003786 synthesis reaction Methods 0.000 abstract description 4
- 238000013461 design Methods 0.000 abstract description 3
- 238000012545 processing Methods 0.000 abstract description 2
- 230000005540 biological transmission Effects 0.000 description 7
- 230000007547 defect Effects 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 239000004020 conductor Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000000737 periodic effect Effects 0.000 description 2
- 229920002635 polyurethane Polymers 0.000 description 2
- 239000004814 polyurethane Substances 0.000 description 2
- 238000004088 simulation Methods 0.000 description 2
- 208000033999 Device damage Diseases 0.000 description 1
- 229910001035 Soft ferrite Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005315 distribution function Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005684 electric field Effects 0.000 description 1
- 230000005672 electromagnetic field Effects 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 230000005415 magnetization Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000004038 photonic crystal Substances 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01P—WAVEGUIDES; RESONATORS, LINES, OR OTHER DEVICES OF THE WAVEGUIDE TYPE
- H01P5/00—Coupling devices of the waveguide type
- H01P5/12—Coupling devices having more than two ports
- H01P5/16—Conjugate devices, i.e. devices having at least one port decoupled from one other port
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01P—WAVEGUIDES; RESONATORS, LINES, OR OTHER DEVICES OF THE WAVEGUIDE TYPE
- H01P5/00—Coupling devices of the waveguide type
- H01P5/12—Coupling devices having more than two ports
Abstract
The application discloses a microwave power distributor based on a magnetic surface plasmon, which comprises a metal cavity, a coaxial input/output port, a soft magnetic ferrite column and a permanent magnet, wherein the metal cavity comprises an upper cover plate, a lower cover plate and a middle bottom plate, the soft magnetic ferrite column and the permanent magnet are respectively arranged on two sides of the middle bottom plate of the metal cavity, the soft magnetic ferrite column is two rows which are arranged according to a period and is provided with two partial areas of a parallel section and a distance gradually-opened section, the coaxial input/output port is arranged on the upper cover plate, and the coaxial input/output port is connected with the middle part of the parallel section and the edge of the gradually-opened section through probes. The microwave power distributor has the advantages of small volume, simple structure, easy processing and low cost; the device has reverse isolation characteristics, can reduce the use of additional isolators in high-power synthesis application scenes, and simplifies the system design; meanwhile, the power dividers with different frequency bands can be obtained by changing the bias magnetic field, so that the flexibility of the system is improved.
Description
Technical Field
The application belongs to the field of electronic devices of microwave systems, and relates to a power distributor, in particular to a broadband microwave power distributor with adjustable working frequency, and more particularly relates to an adjustable microwave power distributor which is composed of ferrite and has reverse isolation characteristics.
Background
In modern microwave systems, the power divider is a very important and commonly used component, often referred to as a power divider, for the purpose of dividing the input microwave power into two or more paths according to a certain ratio. Currently, conventional power dividers mainly have two types: one is a T-junction power divider and the other is a Wilkinson power divider.
The former is formed by directly branching a transmission line to form a T-shaped junction and then adding an impedance matcher, and has the main defects that the output ports are not isolated, and the two ports can be mutually influenced;
the wilkinson power divider can realize better isolation between two output ports by adding an isolation resistor at the output port, and has the defect of narrower bandwidth, and if a multi-section cascade connection mode is adopted, the bandwidth can be expanded, but the area can be enlarged. If the mode of introducing the slow wave structure of CN105514561A is adopted, the relative bandwidth is expanded to a certain extent and the volume is reduced, but the periodic slow wave structure is suitable for working in a high frequency band, and the area is still larger in a low frequency band.
The above prior art based power splitters also have two common limitations: on the one hand, the microwave high-power synthesis device has no reverse isolation characteristic, namely the output port and the input port are reciprocal, and in the application scene of microwave high-power synthesis in a parallel feed mode, high power can be reflected back to the input port to cause device damage due to mismatch of the output port, so that an amplifier for protecting the input port by adding an additional isolation device to the output port is needed, and the volume and the cost are increased; on the other hand, the working frequency of the power divider in the prior art is generally fixed and not tunable, so that the flexibility of the system is limited to a certain extent in the use process.
Disclosure of Invention
The application aims to: aiming at the problems and the defects of the prior art, the application aims to provide a microwave power divider with adjustable working frequency and reverse isolation characteristic.
The technical scheme is as follows: in order to achieve the aim of the application, the application adopts the following technical scheme:
based on magnetic surface plasmon, a microwave power distributor formed by utilizing quasi-one-dimensional ferrite photonic crystal waveguide comprises a metal cavity, a metal upper cover plate, a metal lower cover plate, a soft magnetic ferrite column, a permanent magnet, a microwave absorber, a metal probe and a coaxial input/output port; two rows of soft magnetic ferrite columns which are arranged according to a certain period are positioned in the metal cavity and are in close contact with the middle bottom plate and the upper metal cover plate of the metal cavity; the two columns are provided with two partial areas of parallel sections and distance gradually-opened sections; the permanent magnet is provided with two parts, is positioned under the two rows of soft magnetic ferrite arrays and is positioned at the lower side of the bottom plate in the middle of the metal cavity; a microwave absorber is arranged at the outer side of the soft magnetic ferrite; the metal probes are three and are respectively positioned at the middle part of the parallel section and the edge of the involute section of the two rows of soft magnetic ferrite arrays; the coaxial input/output ports are three and are positioned at the upper part of the metal cavity, and the coaxial inner conductor of the coaxial input/output ports is connected with the metal probe.
Further, the ferrite cylinder is made of yttrium iron garnet ferrite, magnesium manganese ferrite or nickel zinc ferrite.
Further, the typical material of the permanent magnet is strontium ferrite or barium ferrite or neodymium iron boron permanent magnet.
Further, the plurality of ferrite cylinders are circular in cross section.
Further, the magnetic fields of the permanent magnets below the two rows of ferrites are opposite in direction.
Further, the microwave absorber is a carbonyl iron filled polyurethane sponge.
The microwave power divider working in different frequency bands can be obtained by changing the bias magnetic field of the soft magnetic ferrite.
Working principle: the upper and lower bottom surfaces of the soft magnetic ferrite cylinder are tightly attached to the metal cavity, and the upper and lower metal surfaces have the effect of extending vertically from top to bottom on the soft magnetic ferrite according to the electromagnetic field mirror image principle, so that the soft magnetic ferrite with limited length can be equivalent to infinite length; the metal probes vertical to the upper surface and the lower surface of the metal cavity can excite a constant electric field mode, and the mode can excite magnetic surface plasmons on the surface of an array formed by equivalent infinite-length soft magnetic ferrite columns; in the parallel section, an input probe is positioned in the middle of the two rows of ferrite linear arrays, and input electromagnetic waves are transmitted forwards along a public channel formed by the upper surface and the lower surface of the two rows of ferrite linear arrays; in the involute section, the electromagnetic wave energy is gradually localized to the surfaces of the two soft magnetic ferrite linear arrays under the local action of the magnetic surface plasmons, and the power distributed on the surfaces of the two linear arrays is the same due to the symmetry of the structure and electromagnetic parameters, so that the power equally dividing is realized. The magnetic surface plasmon in the ferrite linear array has unidirectional propagation characteristics, so that the power divider has good reverse isolation characteristics; because the energy band of the magnetic surface plasmon can be regulated and controlled by the linear array structural parameters and the bias magnetic field, the radius of the linear array cylinder and the periodic design power divider can be changed, and under the condition of certain structural parameters, the regulation and control of the working frequency can be realized by utilizing different bias magnetic fields provided by different permanent magnets for the soft magnetic ferrite cylinder.
The beneficial effects are that: the application adopts a microwave power distributor (called as a power distributor for short) formed by loading ferrite cylindrical linear arrays in a metal cavity. The power divider has the advantages of small volume, simple structure, easy processing and low cost. Particularly, the power divider has reverse isolation characteristics, and can reduce the use of an additional isolator and simplify the system design in a high-power synthesis application scene; meanwhile, the power dividers with different frequency bands can be obtained by changing the bias magnetic field, so that the flexibility of the system is improved. A series of such power splitters provides a somewhat convenient condition for practical microwave system applications.
Drawings
FIG. 1 is a perspective view showing the appearance of an embodiment of the present application;
FIG. 2 is a top view of FIG. 1 with the top surface removed;
FIG. 3 is a bottom side uncapping view of FIG. 1;
FIG. 4 is a schematic diagram of structural parameters of an embodiment of the present application;
FIG. 5 is a graph showing the comparison of two output port power allocation values according to the present application;
FIG. 6 is a graph of the comparison of forward transmission and reverse isolation under different bias magnetic fields according to the present application;
in the figure: input port 1, first power distribution output port 2, second power distribution output port 3, upper metal cover plate 4, metal cavity 5, lower metal cover plate 6, microwave absorber 7, soft magnetic ferrite post 8, first metal probe 9, second metal probe 10, third metal probe 11, permanent magnet 12.
Detailed Description
The present application is further illustrated in the accompanying drawings and detailed description which are to be understood as being merely illustrative of the application and not limiting of its scope, and various modifications of the application, which are equivalent to those skilled in the art upon reading the application, will fall within the scope of the application as defined in the appended claims.
Fig. 1 to 3 show three-dimensional structures of microwave power splitters according to the present application. In the embodiment, the device comprises a metal cavity, a soft magnetic ferrite column, a permanent magnet, a microwave absorber, a metal probe and a coaxial input/output port; in the external appearance of fig. 1, reference numerals 4 and 6 are respectively an upper metal cover plate and a lower metal cover plate, reference numeral 5 is a metal cavity, and the cover plates and the cavity can be connected by adopting screw connection or laser seam welding; reference numeral 1 denotes an input port, reference numerals 2 and 3 denote power distribution output ports, all ports are SSMA standard connectors, and SSMA connectors are fixed on a cover plate through flanges by screws. The SSMA joint inner conductor and the metal probe are connected into a whole; in the top surface uncapping attempt of fig. 2, two rows of soft magnetic ferrite columns 8 are positioned in a metal cavity, and each row of ferrite columns is arranged at equal intervals and is in close contact with a middle bottom plate and a metal upper cover plate of the metal cavity; the metal probes comprise a first metal probe 9, a second metal probe 10 and a third metal probe 11 which are respectively positioned at the middle part and the edge of the involute of the parallel sections of the two rows of soft magnetic ferrite arrays; a microwave absorber 7 is arranged outside the soft magnetic ferrite; in the bottom decoating attempt of fig. 3, the permanent magnet 12 has two parts, both of which are located directly under the two rows of soft ferrite arrays, and are located on the underside of the middle bottom plate of the metal cavity.
Fig. 4 shows a schematic diagram of structural parameters of the microwave power divider according to the present application. In this embodiment, the soft magnetic ferrite is yttrium iron garnet ferrite, and its saturation magnetization is 4pi ms=1800 Gauss, and dielectric constant ε=15. The diameter phi of the yttrium iron garnet ferrite cylinder is=2 mm, the interval S1=4.4 mm, the two columns of cylinders of the parallel section of the input end are respectively provided with 6 cylinders, the height of the parallel section is as high as the height of the cavity inner cavity Hf=10 mm, the interval Gap between the two columns is=6 mm, the gradually-opened section is respectively provided with 4 cylinders, the output end with the inclination angle of 45 degrees is respectively provided with 7 cylinders, and the interval Gap between the two columns is 2=24.5 mm. The permanent magnet is neodymium iron boron permanent magnet material, width wm=6mm, high hp=5mm, length lm1=26mm, lm2=10mm, lm3=35mm, and its middle deflection angle 135 °, length l=24mm. The metal cavity interface is H-shaped, the length lc=79 mm, the width hc=47 mm forms an upper cavity and a lower cavity, the upper cavity height Hf=10 mm, the lower cavity height Hm=5 mm, the thickness d0=1 mm of the middle bottom plate and the cavity wall thickness d=4 mm; the wave absorber is carbonyl iron filled polyurethane sponge, the maximum length ls=70.5 mm, the maximum width hs=16.5 mm of the wave absorber closely attached to the outer side of the yttrium iron garnet cylinder, the length lsi=28.5 mm, the width his=6.5 mm of the wave absorber at the middle part, and the height of the wave absorber is equal to the height hf=10 mm of the inner cavity of the cavity. The thickness of the metal upper cover plate is 2mm, and the thickness of the lower cover plate is 1mm.
Fig. 4 shows a graph of the comparison of two output port power allocation values. S21 identified by the solid line and S31 identified by the dotted line are power transmissions from output port 1 to output port 2 and output port 3, respectively. S parameter simulation results show that when the bias magnetic field is 2000Oe, the center frequency of the power divider is 10.25GHz, the power distribution is 3dB, the insertion loss is about 2dB and less than 2dB within the range of the frequency from 8.5GHz to 12GHz, and a good power distribution function is realized.
Fig. 5 shows a graph of the forward transmission and reverse isolation contrast results of the present application at different bias magnetic fields. The three graphs respectively correspond to the bias magnetic fields of 2000Oe, 2500Oe and 3000Oe, wherein the solid lines in each graph are the forward transmission characteristic curves S21, and the broken lines are the reverse transmission characteristic curves S12; the longitudinal dash-dot lines identify their respective operating frequency bands; from the simulation results, the power divider has two characteristics: on the one hand, within the operating frequency band in each figure, the forward and reverse transmissions have a large difference, the difference of which is 10-20dB, which proves that the power divider has good forward and reverse isolation characteristics; on the other hand, as the bias magnetic field is gradually increased, the working frequency bands of the three graphs from left to right are also increased, and good isolation characteristics can be maintained, so that the power divider has good magnetic adjustable characteristics.
Claims (6)
1. The microwave power distributor based on the magnetic surface plasmon comprises a metal cavity, a coaxial input/output port, soft magnetic ferrite columns and a permanent magnet, wherein the metal cavity comprises an upper cover plate, a lower cover plate and a middle bottom plate, the soft magnetic ferrite columns and the permanent magnet are respectively arranged on two sides of the middle bottom plate of the metal cavity, the soft magnetic ferrite columns are two rows which are equidistantly arranged, a first connecting point is arranged in the middle of a parallel section of each of the two rows, a second connecting point and a third connecting point are arranged at the edge of a distant involute, the two rows of soft magnetic ferrite columns are positioned in the metal cavity, and each row of soft magnetic ferrite columns are arranged at equal intervals and are in close contact with the middle bottom plate of the metal cavity and the metal upper cover plate; a microwave absorber is arranged at the outer side of the soft magnetic ferrite column; the permanent magnet has two parts, all is located two and is listed as soft magnetic ferrite post arrays under, and is located metal cavity middle part bottom plate downside, coaxial input output port installs on the upper cover plate, and with first tie point, second tie point and third tie point through the probe connection respectively.
2. The magnetic meter plasmon-based microwave power splitter of claim 1 wherein: the soft magnetic ferrite column is made of yttrium iron garnet ferrite, magnesium manganese ferrite or nickel zinc ferrite.
3. A microwave power divider as recited in claim 1, wherein: the permanent magnet is made of strontium ferrite or barium ferrite or neodymium iron boron permanent magnet.
4. The magnetic meter plasmon-based microwave power splitter of claim 1 wherein: the two columns of soft magnetic ferrite posts have two partial areas of parallel sections and distance gradually-opened sections.
5. The microwave power divider based on the magnetic surface plasmon according to claim 1, wherein the permanent magnet and the soft magnetic ferrite column are symmetrical with the middle bottom plate of the metal cavity as the center.
6. The microwave power divider based on magnetic surface plasmons according to claim 1, wherein the directions of permanent magnetic fields under the two rows of soft magnetic ferrites are opposite.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201810706910.XA CN108598652B (en) | 2018-07-02 | 2018-07-02 | Microwave power distributor based on magnetic surface plasmon |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201810706910.XA CN108598652B (en) | 2018-07-02 | 2018-07-02 | Microwave power distributor based on magnetic surface plasmon |
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| CN108598652A CN108598652A (en) | 2018-09-28 |
| CN108598652B true CN108598652B (en) | 2023-10-24 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109462001B (en) * | 2018-11-01 | 2021-08-03 | 中国矿业大学 | Wave separator based on coplanar waveguide and artificial surface plasmon |
| CN115360494B (en) * | 2022-07-15 | 2023-05-23 | 电子科技大学 | Valley-dependent photonic crystal beam splitter based on single-layer permanent magnet |
Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1330021A (en) * | 1972-06-05 | 1973-09-12 | Gen Electric Co Ltd | Microwave power-limiting devices |
| CN1121252A (en) * | 1994-05-02 | 1996-04-24 | 松下电器产业株式会社 | Magnetoresistance effect device, and magnetoresistance effect type head, memory device, and amplifying device using the same |
| JP2004219415A (en) * | 2002-12-27 | 2004-08-05 | Rikogaku Shinkokai | Surface plasmon excitating multilayer particulates, dispersed body of the same and method for manufacturing the same |
| DE102007031841A1 (en) * | 2007-07-08 | 2009-01-15 | Imst Gmbh | Multi-band coupler structure for e.g. power splitter, has surface plasmon polariton gap wave guide with common layer of metal across entire coupling area, where metallic layer has thickness less than preset value |
| CN102856622A (en) * | 2012-09-21 | 2013-01-02 | 东南大学 | Directional coupler on basis of spoof surface plasmon polariton |
| CN102946006A (en) * | 2012-11-15 | 2013-02-27 | 南京大学 | Magnetic adjustable antenna based on substrate integrated waveguide |
| CN105846115A (en) * | 2016-04-07 | 2016-08-10 | 南京大学 | Pattern-reconfigurable directional radiation antenna |
| CN106129563A (en) * | 2016-07-08 | 2016-11-16 | 中国人民解放军空军工程大学 | A kind of based on WAVEGUIDE LOADED ferritic adjustable microwave isolator |
| CN106953149A (en) * | 2017-04-12 | 2017-07-14 | 南京大学 | Microwave isolator based on ferrite magnetic linkage |
| JP2017152781A (en) * | 2016-02-22 | 2017-08-31 | 国立大学法人京都工芸繊維大学 | Non-reciprocal metamaterial transmission line device and antenna device |
| CN208820040U (en) * | 2018-07-02 | 2019-05-03 | 南京工业职业技术学院 | A kind of microwave power divider based on magnetic table phasmon |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7010183B2 (en) * | 2002-03-20 | 2006-03-07 | The Regents Of The University Of Colorado | Surface plasmon devices |
| WO2012014984A1 (en) * | 2010-07-28 | 2012-02-02 | 国立大学法人京都工芸繊維大学 | Microwave resonator |
-
2018
- 2018-07-02 CN CN201810706910.XA patent/CN108598652B/en active Active
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1330021A (en) * | 1972-06-05 | 1973-09-12 | Gen Electric Co Ltd | Microwave power-limiting devices |
| CN1121252A (en) * | 1994-05-02 | 1996-04-24 | 松下电器产业株式会社 | Magnetoresistance effect device, and magnetoresistance effect type head, memory device, and amplifying device using the same |
| JP2004219415A (en) * | 2002-12-27 | 2004-08-05 | Rikogaku Shinkokai | Surface plasmon excitating multilayer particulates, dispersed body of the same and method for manufacturing the same |
| DE102007031841A1 (en) * | 2007-07-08 | 2009-01-15 | Imst Gmbh | Multi-band coupler structure for e.g. power splitter, has surface plasmon polariton gap wave guide with common layer of metal across entire coupling area, where metallic layer has thickness less than preset value |
| CN102856622A (en) * | 2012-09-21 | 2013-01-02 | 东南大学 | Directional coupler on basis of spoof surface plasmon polariton |
| CN102946006A (en) * | 2012-11-15 | 2013-02-27 | 南京大学 | Magnetic adjustable antenna based on substrate integrated waveguide |
| JP2017152781A (en) * | 2016-02-22 | 2017-08-31 | 国立大学法人京都工芸繊維大学 | Non-reciprocal metamaterial transmission line device and antenna device |
| CN105846115A (en) * | 2016-04-07 | 2016-08-10 | 南京大学 | Pattern-reconfigurable directional radiation antenna |
| CN106129563A (en) * | 2016-07-08 | 2016-11-16 | 中国人民解放军空军工程大学 | A kind of based on WAVEGUIDE LOADED ferritic adjustable microwave isolator |
| CN106953149A (en) * | 2017-04-12 | 2017-07-14 | 南京大学 | Microwave isolator based on ferrite magnetic linkage |
| CN208820040U (en) * | 2018-07-02 | 2019-05-03 | 南京工业职业技术学院 | A kind of microwave power divider based on magnetic table phasmon |
Non-Patent Citations (4)
| Title |
|---|
| Circulator Based on Spoof Surface Plasmon Polaritons;Tianshuo Qiu 等;《IEEE Antennas and Wireless Propagation Letters》;第16卷;全文 * |
| 磁光颗粒介质的表面等离激元共振效应;黄志芳;《中国优秀硕士学位论文全文数据库 工程科技Ⅰ辑》;全文 * |
| 磁性光子晶体非互易传输特性研究;李镇;《中国博士学位论文全文数据库 基础科学辑》;全文 * |
| 表面等离激元与磁表面等离激元;王振林 等;《物理》(第10期);全文 * |
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