CN108598652A - A kind of microwave power divider based on magnetic table phasmon - Google Patents
A kind of microwave power divider based on magnetic table phasmon Download PDFInfo
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- CN108598652A CN108598652A CN201810706910.XA CN201810706910A CN108598652A CN 108598652 A CN108598652 A CN 108598652A CN 201810706910 A CN201810706910 A CN 201810706910A CN 108598652 A CN108598652 A CN 108598652A
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- ferrite
- microwave power
- phasmon
- power divider
- magnetic
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- 229910000859 α-Fe Inorganic materials 0.000 claims abstract description 45
- 229910052751 metal Inorganic materials 0.000 claims abstract description 42
- 239000002184 metal Substances 0.000 claims abstract description 42
- 239000000523 sample Substances 0.000 claims abstract description 16
- 230000000737 periodic effect Effects 0.000 claims abstract 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 5
- 239000002223 garnet Substances 0.000 claims description 5
- 239000000463 material Substances 0.000 claims description 5
- MTRJKZUDDJZTLA-UHFFFAOYSA-N iron yttrium Chemical group [Fe].[Y] MTRJKZUDDJZTLA-UHFFFAOYSA-N 0.000 claims description 4
- 229910001172 neodymium magnet Inorganic materials 0.000 claims description 3
- 229920002635 polyurethane Polymers 0.000 claims description 3
- 239000004814 polyurethane Substances 0.000 claims description 3
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 claims description 2
- 229910001053 Nickel-zinc ferrite Inorganic materials 0.000 claims description 2
- 229910052749 magnesium Inorganic materials 0.000 claims description 2
- 239000011777 magnesium Substances 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 group [Sr] CIOAGBVUUVVLOB-UHFFFAOYSA-N 0.000 claims description 2
- 230000005389 magnetism Effects 0.000 claims 3
- 238000002955 isolation Methods 0.000 abstract description 12
- 230000015572 biosynthetic process Effects 0.000 abstract description 3
- 238000003786 synthesis reaction Methods 0.000 abstract description 3
- 238000003491 array Methods 0.000 description 5
- 230000005540 biological transmission Effects 0.000 description 5
- 238000009826 distribution Methods 0.000 description 5
- 239000006096 absorbing agent Substances 0.000 description 4
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000003780 insertion Methods 0.000 description 2
- 230000037431 insertion Effects 0.000 description 2
- 238000004088 simulation Methods 0.000 description 2
- 101100282111 Caenorhabditis elegans gap-2 gene Proteins 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 125000004122 cyclic group Chemical class 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 208000002925 dental caries Diseases 0.000 description 1
- 230000005672 electromagnetic field Effects 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 230000005415 magnetization Effects 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
- 230000002459 sustained effect Effects 0.000 description 1
- 229910052727 yttrium Inorganic materials 0.000 description 1
- VWQVUPCCIRVNHF-UHFFFAOYSA-N yttrium atom Chemical compound [Y] VWQVUPCCIRVNHF-UHFFFAOYSA-N 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 invention discloses a kind of microwave power dividers based on magnetic table phasmon, including metal cavity, coaxial input/output port, soft magnetic ferrite column and permanent magnet, metal cavity includes upper cover plate, lower cover and middle part bottom plate, soft magnetic ferrite column and permanent magnet are separately mounted to the both sides of bottom plate in the middle part of metal cavity, soft magnetic ferrite column be according to periodic arrangement at two row, section two parts region is gradually opened with parallel-segment and distance, coaxial input/output port is mounted on upper cover plate, and is opened in the middle part of parallel-segment and gradually a section edge and is connect by probe.The microwave power divider of the present invention has small, simple in structure, handling ease, low-cost advantage；And there is reverse isolation characteristic, in high power synthesis application scene, it is possible to reduce additional isolator uses, and simplifies system design；Meanwhile the power splitter of different frequency range can be obtained by changing bias magnetic field, improve the flexibility of system.
Description
Technical field
The invention belongs to microwave system field of electronic devices, are related to a kind of power divider, specifically a kind of working frequency
Adjustable wide-band microwave power divider, it is more specifically a kind of to have the adjustable micro- of reverse isolation characteristic using what ferrite was constituted
Tone.
Background technology
In modern microwave system, power divider effect is to realize and divides input microwave power according to a certain percentage
It is made into the function of two-way or multichannel, is extremely important and common component, is often simply called power splitter.Conventional power splitter at present
There are mainly of two types：One is T shape knot power splitters, and one is Wilkinson power dividers.
The former form is the T-shaped knot of the direct Y-shaped of transmission line, then adds impedance matching box and constitutes, major defect exists
There is no isolation between output port, can influence each other between two ports；
Wilkinson power divider by increasing an isolation resistance in output port, may be implemented between two output ports compared with
Good isolation, has a disadvantage in that narrower bandwidth, if can expand bandwidth using the cascade form of more piece, but area can become
Greatly.If having expanded relative bandwidth to a certain extent using the introducing slow-wave structure mode of CN105514561A and having reduced body
Product, but this cyclic slow wave structure is suitble to be operated in high band, in low-frequency range, its area is still larger.
The power splitter based on the prior art also has there are two common limitation above：On the one hand, they all do not have reversed
Isolation characteristic, i.e., output and input port are reciprocity, in the microwave high power synthesis application scene for using and presenting form, due to
The mismatch of output port, the high-power input port that can be reflected back lead to device failure, it is therefore desirable in output port plus additional
Isolating device protection input port have amplifier, increase so as to cause volume and cost；On the other hand, the work(of the prior art
Point device working frequency be it is typically fixed, it is untunable, thus system flexibility can be by certain during its use
The restriction of degree.
Invention content
Goal of the invention：Existing problem and shortage for the above-mentioned prior art, the object of the present invention is to provide a kind of work
Frequency is adjustable and has the microwave power distributor of reverse isolation characteristic.
Technical solution：For achieving the above object, the technical solution adopted by the present invention is：
Based on magnetic table phasmon, the microwave power divider constituted using accurate one-dimensional ferrite photonic crystal waveguide, packet
Include metal cavity, metal top cover plate, lower cover, soft magnetic ferrite column and permanent magnet, microwave-absorbing body, metal probe, coaxial defeated
Enter output port；Two row are located at according to the soft magnetic ferrite column that some cycles arrange in metal cavity, with bottom in the middle part of metal cavity
Plate and metal top cover plate are in close contact；There is two row cylinders parallel-segment and distance gradually to open section two parts region；Permanent magnet has two
Point, it is all located at the underface of two row soft magnetic ferrite arrays, and positioned at baseplate underside in the middle part of metal cavity；On the outside of soft magnetic ferrite
Microwave-absorbing body is disposed；There are three metal probes, is located in the middle part of the parallel-segment of two row soft magnetic ferrite arrays and gradually opens
Duan Bianyuan；There are three coaxial input/output ports, is located at metal cavity top, and coaxial inner conductor is connected with metal probe.
Further, the material of ferrite cylinder is yttrium iron garnet ferrite, magnesium Mn ferrite or nickel-zinc ferrite.
Further, the typical material of permanent magnet is strontium ferrite or barium ferrite or Nd-Fe-B permanent magnet.
Further, multiple ferrite cylinder cross sections are circle.
Further, the permanent magnet magnetic field direction below two row ferrites is opposite.
Further, microwave-absorbing body is the polyurethane sponge body of carbonyl iron filling.
The microwave power distributor for being operated in different frequency range can be obtained by changing the bias magnetic field of soft magnetic ferrite.
Operation principle：Bottom surface is fitted closely with metal cavity on soft magnetic ferrite cylinder, according to electromagnetic field image theory,
Upper and lower metal covering plays the role of vertical continuation up and down to soft magnetic ferrite, as a result, time-limited soft magnetic ferrite can be equivalent
For endless；Metal probe perpendicular to wire chamber top and bottom can encourage sustained field pattern, this pattern can be in equivalent nothing
The array surface that limit for length's soft magnetic ferrite column is constituted motivates magnetic surface phasmon；In parallel-segment, input probe is located at two row
The centre of ferrite linear array, the public passage that input electromagnetic wave is constituted along the upper and lower surface of two row ferrite linear arrays is to forward pass
It is defeated；Gradually opening section, thering is the local of magnetic surface phasmon to act on, electromagnetic wave energy gradually local to two soft magnetic ferrite linear arrays
Surface, due to the symmetry of structure and electromagnetic parameter, the power of two alignment battle array surface distributions is identical, to realize power decile.
Due in ferrite linear array magnetic surface phasmon have one way propagation characteristic, this power splitter have it is good reversely every
From characteristic；Since the energy band of magnetic surface phasmon can be regulated and controled by linear array structure parameter and bias magnetic field, can change
Become linear array cylindrical radius and cycle design power splitter, and it is certain in structural parameters, and it is soft that can utilize different permanent magnets
The different bias magnetic fields that magnetic ferrites cylinder provides realize the regulation and control of working frequency.
Advantageous effect：The present invention is used loads ferrite cylinder linear array composition microwave power divider in metal cavity
(referred to as " power splitter ").This power splitter has small, simple in structure, handling ease, low-cost advantage.Especially this
Kind power splitter has reverse isolation characteristic, in high power synthesis application scene, it is possible to reduce additional isolator uses, and simplifies system
System design；Meanwhile the power splitter of different frequency range can be obtained by changing bias magnetic field, improve the flexibility of system.This work(
The a series of of device are divided a little to provide extremely convenient condition for practical microwave system application.
Description of the drawings
Fig. 1 is the stereoscopic structure chart of the embodiment of the present invention；
Fig. 2 is the view of the top surfaces Fig. 1 uncapping；
Fig. 3 is the bottom surface uncapping view of Fig. 1；
Fig. 4 is the structural parameters schematic diagram of the embodiment of the present invention；
Fig. 5 is two output port power assignment value comparison result figures of the present invention；
Fig. 6 is present invention fl transmission and reverse isolation comparing result figure in different bias magnetic fields；
In figure：Input port 1, the first power distribution output port 2, the second power distribution output port 3, upper metal cover board
4, metal cavity 5, lower metal cover board 6, microwave-absorbing body 7, soft magnetic ferrite column 8, the first metal probe 9, the second metal probe
10, third metal probe 11, permanent magnet 12.
Specific implementation mode
In the following with reference to the drawings and specific embodiments, the present invention is furture elucidated, it should be understood that these embodiments are merely to illustrate
It the present invention rather than limits the scope of the invention, after having read the present invention, those skilled in the art are to of the invention each
The modification of kind equivalent form falls within the application range as defined in the appended claims.
Fig. 1-Fig. 3 shows the three-dimensional structure of microwave power divider of the present invention.In the implementation case, packet
Include metal cavity, soft magnetic ferrite column and permanent magnet, microwave-absorbing body, metal probe, coaxial input/output port；Fig. 1 appearances
Figure label 4 and 6 is respectively metal cover board up and down, and label 5 is metal cavity, cover board and cavity may be used screw connect or
Laser seam weld connects；Label 1 is input port, and label 2 and 3 is power distribution output port, and all of the port is SSMA standards
Connector, SSMA connectors are screwed on the cover board by flange.SSMA connectors inner wire is linked together with metal probe；Fig. 2
During top surface uncapping attempts, two row soft magnetic ferrite columns 8 are located in metal cavity, and each column ferrite cylinder is arranged according to equidistant,
It is in close contact with bottom plate in the middle part of metal cavity and metal top cover plate；Metal probe includes the first metal probe 9, the second metal probe
10 and third metal probe 11 3, it is located in the middle part of the parallel-segment of two row soft magnetic ferrite arrays and gradually opens a section edge；It is soft
Microwave-absorbing body 7 has been disposed on the outside of magnetic ferrites；During the bottom surfaces Fig. 3 uncapping attempts, permanent magnet 12 has two parts, and it is soft to be respectively positioned on two row
The underface of magnetic ferrites array, and positioned at baseplate underside in the middle part of metal cavity.
Fig. 4 shows the structural parameters schematic diagram of microwave power divider of the present invention.In the present embodiment, soft magnet
Oxysome is yttrium iron garnet ferrite, saturation magnetization 4πms=1800Gauss, permittivity ε=15.Yttrium iron garnet
Ferrite cylinder diameter of phi=2mm, interval S 1=4.4mm, two row cylinder of input terminal parallel-segment respectively have 6 cylinders, height and chamber
For intracoelomic cavity with high Hf=10mm, two row cylinder spacing Gap=6mm, gradually opening section respectively has 4 cylinders, and 45 ° of angle of inclination output end is each
There are 7 cylinders, two row cylinder spacing Gap2=24.5mm.Permanent magnet is Nd-Fe-B permanent magnet material, width Wm=6mm, height Hp
=5mm, length Lm1=26mm, Lm2=10mm, Lm3=35mm, 135 ° of middle part deflection angle degree, length L=24mm.Metal
Chamber interface is H-type, and length Lc=79mm, width Hc=47mm form two cavitys up and down, upper cavity height Hf=10mm, under
Housing depth Hm=5mm, central floor panel thickness d 0=1mm, cavity wall thickness d=4mm；Wave-absorber is carbonyl iron filled polyurethane sea
Continuous body is close to wave-absorber maximum length Ls=70.5mm, the maximum width Hs=16.5mm of yttrium iron garnet cylindrical outer side, intermediate
Partial wave-absorber length Lsi=28.5mm, width His=6.5mm, wave-absorber height is with cavity inner cavity with high Hf=10mm.
Metal top cover plate thickness 2mm, lower cover plate thickness 1mm.
Fig. 4 shows two output port power assignment value comparison result figures.The S21 of solid line and broken line representation
S31 is respectively the power transmission that output port 1 arrives output port 2 and output port 3.S parameter simulation result shows in biasing magnetic
When field is 2000Oe, power splitter centre frequency 10.25GHz, power distribution 3dB, Insertion Loss is in frequency 8.5GHz to 12GHz ranges
It is interior to be less than 2dB for 2dB or so insertion loss, realize good power dividing function.
Fig. 5 shows the present invention fl transmission and reverse isolation comparing result figure in different bias magnetic fields.Three width figures point
It is 2000Oe, 2500Oe and 3000Oe not corresponded to bias magnetic field, and each middle solid line is fl transmission characteristic curve S21, and empty
Line is backward transfer character curve S12；Longitudinal chain-dotted line identifies its respective working frequency range；From simulation result it can be seen that
This power splitter has both sides characteristic：On the one hand, within the working band in every width figure, preceding reverse transfer has larger
Difference, difference 10-20dB, this proves that this power splitter has good preceding reverse isolation characteristic；On the other hand, with biasing magnetic
Field is stepped up, and from left to right the working band of three width figures is consequently increased and can keep preferable isolation characteristic, this proof
Such power splitter has good magnetic tunable characteristic.
Claims (7)
1. a kind of microwave power divider based on magnetic table phasmon, including metal cavity, coaxial input/output port, soft magnetism
Ferrite column and permanent magnet, the metal cavity include upper cover plate, lower cover and middle part bottom plate, the soft magnetic ferrite column and forever
Magnet is separately mounted to the both sides of bottom plate in the middle part of metal cavity, and the soft magnetic ferrite column is two row according to periodic arrangement,
Section edge gradually is opened with the second tie point and third tie point, institute with the first tie point, in distance in the middle part of the parallel-segment of two row
Coaxial input/output port is stated on upper cover plate, is passed through respectively with the first tie point, the second tie point and third tie point
Probe connects.
2. the microwave power divider according to claim 1 based on magnetic table phasmon, it is characterised in that：The soft magnetism
The material of ferrite cylinder is yttrium iron garnet ferrite, magnesium Mn ferrite or nickel-zinc ferrite.
3. microwave power divider according to claim 1, it is characterised in that：The material of the permanent magnet is strontium ferrite
Or barium ferrite or Nd-Fe-B permanent magnet.
4. the microwave power divider according to claim 1 based on magnetic table phasmon, it is characterised in that：Two row soft magnetisms
There is ferrite cylinder parallel-segment and distance gradually to open section two parts region.
5. the microwave power divider according to claim 1 based on magnetic table phasmon, which is characterized in that the permanent magnet
It is symmetrical centered on bottom plate in the middle part of metal cavity with soft magnetic ferrite column.
6. the microwave power divider according to claim 1 based on magnetic table phasmon, which is characterized in that two row soft magnets
The magnetic direction of body forever below oxysome is opposite.
7. the microwave power divider according to claim 1 based on magnetic table phasmon, which is characterized in that the microwave is inhaled
Acceptor is the polyurethane sponge body of carbonyl iron filling.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| 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 |
|---|---|---|---|
| CN201810706910.XA CN108598652B (en) | 2018-07-02 | 2018-07-02 | Microwave power distributor based on magnetic surface plasmon |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108598652A true CN108598652A (en) | 2018-09-28 |
| CN108598652B CN108598652B (en) | 2023-10-24 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810706910.XA Active CN108598652B (en) | 2018-07-02 | 2018-07-02 | Microwave power distributor based on magnetic surface plasmon |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109462001A (en) * | 2018-11-01 | 2019-03-12 | 江苏师范大学 | A kind of channel-splitting filter based on co-planar waveguide Yu artificial surface phasmon |
| CN115360494A (en) * | 2022-07-15 | 2022-11-18 | 电子科技大学 | Valley-dependent photonic crystal beam splitter based on single-layer permanent magnet |
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| CN109462001A (en) * | 2018-11-01 | 2019-03-12 | 江苏师范大学 | A kind of channel-splitting filter based on co-planar waveguide Yu artificial surface phasmon |
| CN109462001B (en) * | 2018-11-01 | 2021-08-03 | 中国矿业大学 | Wave separator based on coplanar waveguide and artificial surface plasmon |
| CN115360494A (en) * | 2022-07-15 | 2022-11-18 | 电子科技大学 | Valley-dependent photonic crystal beam splitter based on single-layer permanent magnet |
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| Publication number | Publication date |
|---|---|
| CN108598652B (en) | 2023-10-24 |
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