CN208820040U - 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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- CN208820040U CN208820040U CN201821031695.XU CN201821031695U CN208820040U CN 208820040 U CN208820040 U CN 208820040U CN 201821031695 U CN201821031695 U CN 201821031695U CN 208820040 U CN208820040 U CN 208820040U
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Abstract
The utility model provides a kind of microwave power divider 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 plate and middle part bottom plate, soft magnetic ferrite column and permanent magnet are separately mounted to the two sides of bottom plate in the middle part of metal cavity, soft magnetic ferrite column be according to periodic arrangement at two column, section two parts region is gradually opened with parallel-segment and distance, coaxial input/output port is mounted on upper cover plate, and in the middle part of parallel-segment and is gradually opened section edge and is connect by probe.The microwave power divider of the utility model is with small in size, structure is simple, 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 by changing the available different frequency range of 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 technique
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 at T-shaped knot of the direct Y-shaped of transmission line, is then constituted plus impedance matching box, and 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 work 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 reversely
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, so as to cause volume and increased costs；On the other hand, the function of the prior art
Point device working frequency be it is typically fixed, it is untunable, thus system flexibility will receive centainly in its use process
The restriction of degree.
Summary of the invention
Goal of the invention: it is directed to the above-mentioned problems of the prior art and deficiency, 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 are as follows:
Based on magnetic table phasmon, the microwave power divider constituted using quasi- one-dimensional ferrite photonic crystal waveguide, packet
Include metal cavity, metal top cover plate, lower cover plate, soft magnetic ferrite column and permanent magnet, microwave-absorbing body, metal probe, coaxial defeated
Enter output port；Two column are located in metal cavity according to the soft magnetic ferrite column that some cycles arrange, with bottom in the middle part of metal cavity
Plate and metal top cover plate are in close contact；There is two column 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 column soft magnetic ferrite arrays, and be located 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 column 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 magnetic field of permanent magnet below two column ferrites is contrary.
Further, microwave-absorbing body is the polyurethane sponge body of carbonyl iron filling.
Change microwave power distributor of the available work of bias magnetic field in different frequency range of soft magnetic ferrite.
Working 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；Sustained field mode can be motivated perpendicular to the metal probe of wire chamber top and bottom, this mode 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, inputs probe and be located at two column
The centre of ferrite linear array, the public passage that input electromagnetic wave is constituted along the upper and lower surface of two column 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 equal part.
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 will receive the regulation of linear array structure parameter and bias magnetic field, can change
Modified line battle array cylindrical radius and cycle design power splitter, and in the certain situation of structural parameters, it is soft for can use different permanent magnets
The different bias magnetic fields that magnetic ferrites cylinder provides realize the regulation of working frequency.
The utility model has the advantages that 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 is with small in size, structure is simple, 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 by changing the available different frequency range of bias magnetic field, improve the flexibility of system.This function
The a series of of device are divided a little to provide very convenient condition for practical microwave system application.
Detailed description of the invention
Fig. 1 is the stereoscopic structure chart of the embodiment of the present invention；
Fig. 2 is the view that lid is removed in the top surface Fig. 1；
Fig. 3 is that lid view is removed in the bottom surface of Fig. 1；
Fig. 4 and Fig. 5 is the structural parameters schematic diagram of the embodiment of the present invention；
Fig. 6 is the cross-sectional view of Fig. 5；
Fig. 7 is two output port power assignment value comparison result figures of the invention；
Fig. 8, Fig. 9 and Figure 10 are 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 embodiment
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 the present invention has been read, 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 appearance
Figure label 4 and 6 is respectively metal cover board up and down, and label 5 is metal cavity, cover board and cavity can use screw connect or
The connection of laser seam weld；Label 1 is input port, and label 2 and 3 is power distribution output port, and all of the port is SSMA standard
Connector, SSMA connector are screwed on the cover board by flange.SSMA connector inner conductor is linked together with metal probe；Fig. 2
Top surface goes lid to attempt, and two column soft magnetic ferrite columns 8 are located in metal cavity, each column ferrite cylinder according to equidistantly arranging,
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 column soft magnetic ferrite arrays and gradually opens Duan Bianyuan；It is soft
Microwave-absorbing body 7 has been disposed on the outside of magnetic ferrites；Fig. 3 goes bottom surface lid to attempt, and permanent magnet 12 has two parts, it is soft to be respectively positioned on two column
The underface of magnetic ferrites array, and it is located at baseplate underside in the middle part of metal cavity.
Fig. 4, Fig. 5 and Fig. 6 show the structural parameters schematic diagram of microwave power divider of the present invention.The present embodiment
In, soft magnetic ferrite is yttrium iron garnet ferrite, saturation magnetization 4πms=1800Gauss, permittivity ε=15.Yttrium
Iron garnet ferrite cylinder diameter of phi=2mm, 1=4.4mm of interval S, two column cylinder of input terminal parallel-segment respectively have 6 cylinders, high
Degree is with cavity inner cavity with high Hf=10mm, and two column cylinder spacing Gap=6mm, gradually opening section respectively has 4 cylinders, 45 ° of tilt angle outputs
Respectively there are 7 cylinders, two column cylinder spacing Gap2=24.5mm in end.Permanent magnet is Nd-Fe-B permanent magnet material, width Wm=6mm, height
Hp=5mm, length Lm1=26mm, Lm2=10mm, Lm3=35mm, 135 ° of degree of deflection angle of middle part, length are L=24mm.Wire chamber
Body interface is H-type, and length Lc=79mm, width Hc=47mm form two cavitys up and down, upper cavity height Hf=10mm, lower chamber
Height Hm=5mm, central floor panel 0=1mm of thickness d, cavity wall thickness d=4mm；Wave-absorber is carbonyl iron filled polyurethane cavernous body, tightly
Paste wave-absorber maximum length Ls=70.5mm of yttrium iron garnet cylindrical outer side, maximum width Hs=16.5mm, the suction of middle section
Wave body length Lsi=28.5mm, width His=6.5mm, wave-absorber height and cavity inner cavity are the same as high Hf=10mm.Metal top cover plate thickness
Spend 2mm, lower cover plate thickness 1mm.
Fig. 7 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 2000 Oe, power splitter centre frequency 10.25GHz, power distribution 3dB, Insertion Loss is in frequency 8.5GHz to 12GHz model
It is less than 2dB in enclosing for 2dB or so insertion loss, realizes good power dividing function.
Fig. 8, Fig. 9 and Figure 10 show the present invention fl transmission and reverse isolation comparing result in different bias magnetic fields
Figure.It is 2000 Oe, 2500 Oe and 3000 Oe that three width figures, which have respectively corresponded bias magnetic field, and each middle solid line is fl transmission spy
Linearity curve S21, and dotted line is backward transfer character curve S12；Longitudinal chain-dotted line identifies its respective working frequency range；From imitative
True result can be seen that this power splitter has both sides characteristic: on the one hand, preceding reversed within the working band in every width figure
Transmission has larger difference, and difference 10-20dB, this proves that this power splitter has good preceding reverse isolation characteristic；Another party
Face, as bias magnetic field is stepped up, from left to right the working band of three width figures be consequently increased and also be able to maintain preferably every
From characteristic, this proves that such power splitter has good magnetic tunable characteristic.
Claims (6)
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 plate and middle part bottom plate, the soft magnetic ferrite column and forever
Magnet is separately mounted to the two sides of bottom plate in the middle part of metal cavity, and the soft magnetic ferrite column is two column according to periodic arrangement,
Section edge is gradually 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 column
It states coaxial input/output port to be mounted on upper cover plate, pass through respectively with the first tie point, the second tie point and third tie point
Probe connection.
2. the microwave power divider according to claim 1 based on magnetic table phasmon, it is characterised in that: the soft magnetism
Ferrite column is yttrium iron garnet ferrite, magnesium Mn ferrite or nickel-zinc ferrite.
3. the microwave power divider according to claim 1 based on magnetic table phasmon, it is characterised in that: the permanent magnetism
Body is strontium ferrite, 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 column soft magnetisms
There is ferrite column 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 magnetism
Body 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 column soft magnetisms
The magnetic direction of body forever below ferrite is opposite.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821031695.XU CN208820040U (en) | 2018-07-02 | 2018-07-02 | A kind of microwave power divider based on magnetic table phasmon |
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| CN201821031695.XU CN208820040U (en) | 2018-07-02 | 2018-07-02 | A kind of microwave power divider based on magnetic table phasmon |
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| CN208820040U true CN208820040U (en) | 2019-05-03 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108598652A (en) * | 2018-07-02 | 2018-09-28 | 南京工业职业技术学院 | A kind of microwave power divider based on magnetic table phasmon |
| CN111092281A (en) * | 2019-09-10 | 2020-05-01 | 南京邮电大学 | Four-order coupling resonator filter based on artificial magnetic conductor |
-
2018
- 2018-07-02 CN CN201821031695.XU patent/CN208820040U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108598652A (en) * | 2018-07-02 | 2018-09-28 | 南京工业职业技术学院 | A kind of microwave power divider based on magnetic table phasmon |
| CN108598652B (en) * | 2018-07-02 | 2023-10-24 | 南京工业职业技术学院 | Microwave power distributor based on magnetic surface plasmon |
| CN111092281A (en) * | 2019-09-10 | 2020-05-01 | 南京邮电大学 | Four-order coupling resonator filter based on artificial magnetic conductor |
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