CN209561593U - A kind of K-band waveguide isolator - Google Patents
A kind of K-band waveguide isolator Download PDFInfo
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- CN209561593U CN209561593U CN201920457581.XU CN201920457581U CN209561593U CN 209561593 U CN209561593 U CN 209561593U CN 201920457581 U CN201920457581 U CN 201920457581U CN 209561593 U CN209561593 U CN 209561593U
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Abstract
The utility model proposes a kind of K-band waveguide isolators, it include: wave-guide cavity wave, ferrite, absorber, load cavity, the wave-guide cavity wave includes upper cavity and lower chamber, it is oppositely arranged in the lower end surface of upper cavity and the upper surface of the lower chamber, and a pair of of ferrite is further respectively had at relative position, upper permanent magnet by magnetic loop upper piece be pressed in upper cavity upper magnetic field it is intracavitary, lower permanent magnet is intracavitary by the lower magnetic field that the bottom sheet of magnetic loop is pressed in lower chamber, absorber is set in the load port, and absorber is pressed in the load port by load cavity.The utility model can not only play a supporting role to this pair of of ferrite using the design of metal matching step and circular metal matching step, when ferrite sheet can also be made to magnetize under the magnetic fields of permanent magnet piece, while guaranteeing ferrite sheet magnetizing field strength, the electrical distance between two panels ferrite sheet is increased, thus effectively extended products frequency bandwidth.
Description
Technical field
The utility model relates to isolator technical field, in particular to a kind of K-band waveguide isolator.
Background technique
Isolator is a kind of nonreciprocal two-port Microwave Iron Oxide Elements.It only allows electromagnetic wave unidirectionally to pass through, negative side
Very big decaying can be generated to the electromagnetic wave of transmission, is usually used in being isolated between feed and load, reflection of electromagnetic wave is eliminated and causes
Frequency drift etc. influence.The standing-wave ratio, protection feed and transmitting-receiving of machine system can be effectively improved in practice
The effects of duplexing.
With the development of communication technology, wideband, high performance isolator have been the directions of research and innovation, in waveguide isolator
Common triangle map step has been unable to meet present demand.
Utility model content
The purpose of this utility model aims to solve at least one of described technological deficiency.
For this purpose, frequency is high, broader bandwidth, just the purpose of this utility model is that proposing a kind of K-band waveguide isolator
In installation, indices are met the quality standard, and meet the needs of present.
To achieve the goals above, the utility model provides a kind of K-band waveguide isolator, comprising: wave-guide cavity wave, iron oxygen
Body, absorber, load cavity, the wave-guide cavity wave includes upper cavity and lower chamber, and the upper cavity is set to the lower chamber
Top, be oppositely arranged in the lower end surface of upper cavity and the upper surface of the lower chamber, and further respectively had at relative position
A pair of of ferrite, the upper surface of the upper cavity are equipped with upper permanent magnet, and upper permanent magnet by magnetic loop upper piece be pressed in
The upper magnetic field of cavity is intracavitary, and the lower end surface of the lower chamber is equipped with lower permanent magnet, and the bottom sheet that lower permanent magnet passes through magnetic loop
The lower magnetic field for being pressed in lower chamber is intracavitary, and load port is additionally provided on the upper surface of the lower chamber, is set in the load port
Absorber is set, and absorber is pressed in the load port by load cavity.
Preferably, the wave-guide cavity wave uses Y-junction formula structure, and the Y-junction formula structure is by first port, second end
Mouth, load port composition, and the first port, second port, load port are all disposed within the upper surface of lower chamber.
In any of the above-described scheme preferably, the magnetic loop upper piece with the bottom sheet of magnetic loop pass through connection sheet company
It connects, and connection sheet is fixed by screw and the upper cavity, the lower chamber.
In any of the above-described scheme preferably, the lower end surface of the upper cavity is equipped with Y type metal and matches step.
In any of the above-described scheme preferably, the upper surface of the lower chamber is equipped with Y type metal and matches step.
In any of the above-described scheme preferably, Y type metal matching step center is provided with circular metal
With step, the circular metal matching step is for fixing ferrite.
In any of the above-described scheme preferably, the load cavity pass through screw respectively with the upper cavity and lower chamber
Side fix.
In any of the above-described scheme preferably, the ferrite selects circular ferrite.
In any of the above-described scheme preferably, the absorber is ramp type absorber.
In any of the above-described scheme preferably, the outer wall of the load cavity is provided with cooling fin.
The K-band waveguide isolator of the utility model has the advantages that
1, the waveguide cavity of basic forming is not used in the utility model, and uses split type waveguide cavity, by connection sheet and
Load cavity 11 upper cavity 2 and lower chamber 6 is fixed, it is easy to disassemble, additionally it is possible to reduce leakage field to reduce magnetic material to being
The influence of other equipment in system.
2, the utility model improves radiating efficiency in order to avoid load overheat, and the outer wall of load cavity 11 is provided with heat dissipation
Piece.
3, the utility model is equipped with Y type metal on the lower end surface of upper cavity and/or the upper surface of lower chamber and matches step.
Y type metal matching step center is provided with circular metal matching step, and circular metal matching step is for fixing ferrite；
It can not only be played a supporting role to this pair of of ferrite using the design that metal matches step and circular metal matching step, also
When ferrite sheet can be made to magnetize under the magnetic fields of permanent magnet piece, while guaranteeing ferrite sheet magnetizing field strength,
The electrical distance between two panels ferrite sheet is increased, thus effectively extended products frequency bandwidth.
4, the utility model determines the transmission characteristic of device due to ferrite material and size, in order to make the Curie of device
Temperature is high, and temperature stability is good, and ferrite is circular ferrite, and uses resistance to power ferrite material, so that device has height
Frequently, wideband, high impedance, low-loss feature.
5, in order to improve stability, index and high reliablity of the device under limiting temperature, absorber is the utility model
Ramp type absorber, and the inclination of absorber is face-up.
The additional aspect of the utility model and advantage will be set forth in part in the description, partially will be from following description
In become obvious, or recognized by the practice of the utility model.
Detailed description of the invention
The above-mentioned and/or additional aspect and advantage of the utility model from the description of the embodiment in conjunction with the following figures will
Become obvious and be readily appreciated that, in which:
Fig. 1 is the explosive view of the utility model；
Fig. 2 is the assembling figure of the utility model；
In figure, 1, upper permanent magnet；2, upper cavity；3, magnetic loop；4, ferrite；5, metal matches step；6, lower chamber；7,
First port；8, lower permanent magnet；9, load port；10, absorber；11, cavity is loaded；12, second port；13, circular metal
Match step；
Specific embodiment
The embodiments of the present invention are described below in detail, examples of the embodiments are shown in the accompanying drawings, wherein from beginning
Same or similar element or element with the same or similar functions are indicated to same or similar label eventually.Below by ginseng
The embodiment for examining attached drawing description is exemplary, it is intended to for explaining the utility model, and should not be understood as to the utility model
Limitation.
The utility model provides a kind of K-band waveguide isolator, as shown in Figs. 1-2, comprising: wave-guide cavity wave, ferrite 4,
Absorber 10, load cavity 11, wave-guide cavity wave includes upper cavity 2 and lower chamber 6, and upper cavity 2 is set to the top of lower chamber 6,
It is oppositely arranged in the lower end surface of upper cavity 2 and the upper surface of lower chamber 6, and further respectively has a pair of of ferrite at relative position
4, the upper surface of upper cavity 2 is equipped with upper permanent magnet 1, and upper permanent magnet 1 by magnetic loop 3 upper piece be pressed in the upper of upper cavity 2
Magnetic field is intracavitary, and the lower end surface of lower chamber 6 is equipped with lower permanent magnet 8, and lower permanent magnet 8 is pressed in down by the bottom sheet of magnetic loop 3
The lower magnetic field of cavity 6 is intracavitary, and load port 9 is additionally provided on the upper surface of lower chamber 6, and absorber 10 is arranged in load port 9, and
Absorber 10 is pressed in load port 9 by load cavity 11.
Wave-guide cavity wave uses Y-junction formula structure, and Y-junction formula structure is by first port 7, second port 12,9 groups of load port
At, and first port 7, second port 12, load port 9 are all disposed within the upper surface of lower chamber 6.
Working principle: the Y-junction formula structure that wave-guide cavity wave uses, Y-junction formula structure i.e. three end waveguide Y junction circulators can
Regard the device that three identical waveguides are coupled with wave-guide cavity wave by larger coupling aperture as.I.e. by first port input TE10 wave into
The TM110 standing wave of the magnetic field magnetic field Qiang Hexia chamber is excited after entering wave-guide cavity wave, if without applied bias field, this pair of of ferrite
Without magnetization, which the energies such as can couple in second port and load port, if this pair of ferritic size is closed
Suitable, applied bias magnetic direction and size are suitable, and because of gyromagnetic effect, the field distribution in chamber can be 30 ° around center axis rotation, so that chamber
Two transverse magnetic closed curve constant amplitude reverse phases at load port of middle standing wave, microwave electromagnetic field is coupled only to second port at this time,
Similarly, the electromagnetic wave of second port input is coupled only to load port, and the electromagnetic wave of load port input is coupled only to first end
Mouthful, to realize function of going in ring.
In another embodiment of the utility model, magnetic loop 3 upper piece with the bottom sheet of magnetic loop 3 pass through connection sheet company
Connect, and connection sheet is fixed by screw and upper cavity 2, lower chamber 6, wherein magnetic loop 3 upper piece, bottom sheet and connection sheet one
Molding, it is U-shaped.Load cavity 11 is fixed with upper cavity 2 and the side of lower chamber 6 respectively by screw.
The waveguide cavity of basic forming is not used in the utility model, and uses split type waveguide cavity, by connection sheet and bears
Carry cavity 11 upper cavity 2 and lower chamber 6 is fixed, it is easy to disassemble, additionally it is possible to reduce leakage field to reduce magnetic material to system
The influence of middle other equipment.
In another embodiment of the utility model, the lower end surface of upper cavity 2 and/or the upper surface of lower chamber 6 are equipped with Y
Type metal matches step 5.Y type metal matching 5 center of step is provided with circular metal matching step 13, circular metal matching
Step 13 is also used to adjust frequency and bandwidth for fixing ferrite 4.
Another embodiment of the utility model is, since ferrite material and size determine the transmission characteristic of device,
In order to keep the Curie temperature of device high, temperature stability is good, and ferrite 4 selects circular ferrite 4.And use resistance to power ferrite
Material, so that device has the characteristics that high frequency, wideband, high impedance, low-loss.
Another embodiment of the utility model is, in order to improve stability of the device under limiting temperature, index and can
By property height, absorber 10 is ramp type absorber 10, and the inclination of absorber 10 is face-up.
Another embodiment of the utility model is, in order to avoid load overheat, to improve radiating efficiency, load cavity 11
Outer wall is provided with cooling fin.
The key technical indexes of the K-band waveguide isolator of the utility model is as follows:
| Frequency range | 17.5-20.4GHz |
| Forward loss | 0.25dB |
| Reverse anchor jam nut | 20dB |
| Standing-wave ratio | 1.20 |
| Temperature range | - 40~+85 DEG C |
| Storage temperature | - 55~+100 DEG C |
Although the embodiments of the present invention have been shown and described above, it is to be understood that above-described embodiment is
Illustratively, it should not be understood as limiting the present invention, those skilled in the art are not departing from the utility model
Principle and objective in the case where above-described embodiment can be changed in the scope of the utility model, modify, replace and
Modification.The scope of the utility model is by appended claims and its equivalent limits.
Claims (10)
1. a kind of K-band waveguide isolator, comprising: wave-guide cavity wave, ferrite, absorber, load cavity, which is characterized in that institute
Stating wave-guide cavity wave includes upper cavity and lower chamber, and the upper cavity is set to the top of the lower chamber, in the lower end of upper cavity
Face and the upper surface of the lower chamber are oppositely arranged, and a pair of of ferrite is further respectively had at relative position, the upper cavity
Upper surface be equipped with upper permanent magnet, and upper permanent magnet by magnetic loop upper piece be pressed in upper cavity upper magnetic field it is intracavitary, it is described
The lower end surface of lower chamber is equipped with lower permanent magnet, and lower permanent magnet is pressed in the lower magnetic field chamber of lower chamber by the bottom sheet of magnetic loop
It is interior, it is additionally provided with load port on the upper surface of the lower chamber, absorber is set in the load port, and will by load cavity
Absorber is pressed in the load port.
2. K-band waveguide isolator as described in claim 1, which is characterized in that the wave-guide cavity wave uses Y-junction formula knot
Structure, the Y-junction formula structure are made of first port, second port, load port, and the first port, second port, negative
Load port is all disposed within the upper surface of lower chamber.
3. K-band waveguide isolator as described in claim 1, which is characterized in that the magnetic loop upper piece with magnetic loop
Bottom sheet is connected by connection sheet, and connection sheet is fixed by screw and the upper cavity, the lower chamber.
4. K-band waveguide isolator as described in claim 1, which is characterized in that the lower end surface of the upper cavity is equipped with Y type
Metal matches step.
5. K-band waveguide isolator as described in claim 1, which is characterized in that the upper surface of the lower chamber is equipped with Y type
Metal matches step.
6. K-band waveguide isolator as described in claim 4 or 5, which is characterized in that the Y type metal matches step center
Position is provided with circular metal matching step, and the circular metal matching step is for fixing ferrite.
7. K-band waveguide isolator as described in claim 1, which is characterized in that the load cavity by screw respectively with
The side of the upper cavity and lower chamber is fixed.
8. K-band waveguide isolator as described in claim 1, which is characterized in that the ferrite selects circular ferrite.
9. K-band waveguide isolator as described in claim 1, which is characterized in that the absorber is ramp type absorber.
10. K-band waveguide isolator as described in claim 1, which is characterized in that the outer wall of the load cavity is provided with scattered
Backing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920457581.XU CN209561593U (en) | 2019-04-04 | 2019-04-04 | A kind of K-band waveguide isolator |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201920457581.XU CN209561593U (en) | 2019-04-04 | 2019-04-04 | A kind of K-band waveguide isolator |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114628874A (en) * | 2020-12-11 | 2022-06-14 | 华为技术有限公司 | Signal isolator and microwave outdoor unit |
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2019
- 2019-04-04 CN CN201920457581.XU patent/CN209561593U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114628874A (en) * | 2020-12-11 | 2022-06-14 | 华为技术有限公司 | Signal isolator and microwave outdoor unit |
| CN114628874B (en) * | 2020-12-11 | 2023-09-12 | 华为技术有限公司 | Signal isolator and microwave outdoor unit |
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