CN221632830U - Waveguide isolator - Google Patents
Waveguide isolator Download PDFInfo
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- CN221632830U CN221632830U CN202323637444.XU CN202323637444U CN221632830U CN 221632830 U CN221632830 U CN 221632830U CN 202323637444 U CN202323637444 U CN 202323637444U CN 221632830 U CN221632830 U CN 221632830U
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- 238000004891 communication Methods 0.000 claims abstract description 33
- 229910000859 α-Fe Inorganic materials 0.000 claims description 19
- 229910000831 Steel Inorganic materials 0.000 claims description 11
- 239000010959 steel Substances 0.000 claims description 11
- 238000005452 bending Methods 0.000 claims description 8
- 239000012212 insulator Substances 0.000 claims description 7
- 230000005540 biological transmission Effects 0.000 description 4
- 230000006698 induction Effects 0.000 description 4
- 238000002955 isolation Methods 0.000 description 4
- 230000007547 defect Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000000670 limiting effect Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000002829 reductive effect Effects 0.000 description 2
- 230000008054 signal transmission Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000002401 inhibitory effect Effects 0.000 description 1
- 230000002452 interceptive effect Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000036961 partial effect Effects 0.000 description 1
- 239000004810 polytetrafluoroethylene Substances 0.000 description 1
- 229920001343 polytetrafluoroethylene Polymers 0.000 description 1
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Abstract
The utility model discloses a waveguide isolator, comprising: the upper waveguide cover plate is fixedly connected with the lower waveguide cavity; the lower waveguide cavity includes: the first cavity, the second cavity and the third cavity; one end of the first cavity, one end of the second cavity and one end of the third cavity are connected, so that the first cavity, the second cavity and the third cavity form a communicating cavity; the other end of the first cavity is opened and is used as an output port of the waveguide isolator; the other end of the second cavity is connected with a waveguide input cavity, one end of the waveguide input cavity is connected with the communication cavity, and the other end of the waveguide input cavity is opened and serves as a waveguide input port of the waveguide isolator; the other end of the third cavity is open and serves as a load port of the waveguide isolator. The utility model can prevent signal interference and can solve the application requirements of inconsistent input and output calibers of the waveguide.
Description
Technical Field
The invention relates to a waveguide isolator, and belongs to the technical field of waveguide radio frequency communication equipment.
Background
Electromagnetic wave propagation in a waveguide is a limitation due to the waveguide structure. When an electromagnetic wave enters from one end of the waveguide, the electromagnetic wave may reflect back and forth in the waveguide without a waveguide isolator, potentially interfering with other signals or devices in the waveguide.
For applications requiring strict unidirectional propagation and isolation, such as radio frequency communication systems, lasers, etc., it is desirable that the electromagnetic wave in the waveguide propagate in only one direction and that no reflection occurs.
Waveguide isolators are devices for controlling and isolating the propagation of electromagnetic waves in waveguides, using specific waveguide structures and techniques for controlling magnetic fields, such that the propagation of electromagnetic waves in the waveguide is unidirectional, are widely used in high frequency electronics and communication systems.
Under the condition that the input caliber and the output caliber of the waveguide are inconsistent, the conventional waveguide isolator needs to rely on a switching device and has the defects of large volume, poor isolation efficiency and high cost.
Disclosure of utility model
The utility model aims to overcome the defects in the prior art, and provides a waveguide isolator which can prevent signal interference and can solve the application requirements of inconsistent input and output calibers of waveguides. In order to achieve the above purpose, the utility model is realized by adopting the following technical scheme:
The invention provides a waveguide isolator, comprising: the upper waveguide cover plate is fixedly connected with the lower waveguide cavity;
the lower waveguide cavity includes: the first cavity, the second cavity and the third cavity;
One end of the first cavity, one end of the second cavity and one end of the third cavity are connected, so that the first cavity, the second cavity and the third cavity form a communicated cavity;
The other end of the first cavity is opened and is used as an output port of the waveguide isolator;
The other end of the second cavity is connected with a waveguide input cavity, one end of the waveguide input cavity is connected with the communication cavity, and the other end of the waveguide input cavity is opened and serves as a waveguide input port of the waveguide isolator;
the other end of the third cavity is open and serves as a load port of the waveguide isolator.
Optionally, the communication department of first cavity, second cavity and third cavity is equipped with first center step, the top of first center step is equipped with the second center step, the top of second center step is equipped with the recess, be equipped with ferrite in the recess, ferrite is used for keeping apart electric current and suppressing high frequency noise.
Optionally, an insulator covers the surface of the ferrite, and the insulator compresses the ferrite in the recess through a debugging cover plate.
Optionally, a magnetic steel hole is formed in the upper waveguide cover plate, and the magnetic steel hole is in clearance fit with the second center step; a permanent magnet is arranged in the magnetic steel hole and used for enabling the ferrite to be positioned in the magnetic steel hole.
Optionally, the second center step is connected with the first center step through a fixing pin.
Optionally, the first cavity is composed of a plurality of cavity segments, the center lines of the plurality of cavity segments are parallel, so that the first cavity has a bend.
Optionally, a cavity section with an opening in the plurality of cavity sections is an output opening section, and a cavity section connected with one end of the second cavity and one end of the third cavity is a communication section; the caliber of the cavity sections from the communication section to the output opening section is gradually increased, specifically: the length and/or width of the rectangle from the communication section to the longitudinal section of the output opening section increases gradually, and the longitudinal section is a surface perpendicular to the direction from the communication section to the output opening section.
Optionally, the second cavity is formed by a plurality of cavity sections into an L-shaped bending structure; the outer side edge of the L-shaped bending structure is gradually bent, and the inner side edge is right-angle bent.
Optionally, a cavity section connected with the waveguide input cavity in the plurality of cavity sections is an input section, and a cavity section connected with one end of the first cavity and one end of the third cavity is a communication section; the caliber of the cavity sections from the communication section to the input section increases gradually.
Optionally, a load is disposed at the third cavity, and the load is used for absorbing residual power in the waveguide and preventing reflected waves from being generated.
Compared with the prior art, the waveguide isolator provided by the embodiment of the utility model has the following beneficial effects:
The waveguide isolator of the present utility model comprises: the upper waveguide cover plate is fixedly connected with the lower waveguide cavity; the lower waveguide cavity includes: the first cavity, the second cavity and the third cavity; one end of the first cavity, one end of the second cavity and one end of the third cavity are connected; the other end of the first cavity is opened and is used as an output port of the waveguide isolator; the other end of the second cavity is connected with a waveguide input cavity, and the other end of the waveguide input cavity is opened and is used as a waveguide input port of the waveguide isolator; the other end of the third cavity is open and serves as a load port of the waveguide isolator. The waveguide isolator provided by the utility model adopts a structure, so that the transmission loss of electromagnetic waves in the waveguide isolator can be increased, the reflection is reduced, the isolation effect is improved, the signal interference is prevented, the transmission of signals is ensured, and the waveguide is protected;
The ferrite is arranged at the connection part of the first cavity, the second cavity and the third cavity and is used for isolating current and inhibiting high-frequency noise, and the ferrite has the characteristics of high magnetic induction intensity and high magnetic saturation magnetic field, has stability and heat resistance and can enhance the magnetic induction intensity;
The first cavity is provided with the bending structure, the second cavity is formed by a plurality of cavity sections into an L-shaped bending structure, so that the input end and the output end of the waveguide isolator are not in the same straight line, and the application requirements of some nonlinear transmission scenes can be met;
According to the utility model, the caliber of the first cavity is increased from the communication section to the plurality of cavity sections of the output opening section, and the caliber of the second cavity is increased from the communication section to the plurality of cavity sections of the input section, so that the performance of the waveguide isolator can be ensured without increasing the volume of the waveguide isolator, and the application requirements of inconsistent input and output calibers of the waveguide can be solved; the waveguide isolator has the advantages of small volume, wide applicability and low cost.
Drawings
Fig. 1 is a block diagram of a waveguide isolator according to an embodiment of the present utility model.
In the figure:
1. An insulator; 2. a ferrite; 3. a first center step; 4. a second center step; 5. a fixing pin; 6. a load; 7. a first cavity; 8. a second cavity; 9. a waveguide input cavity; 10. and a third cavity.
Detailed Description
The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
In the description of the present utility model, it should be noted that the terms "upper/lower", "inner", "outer", "front", "rear", "both ends", "one end", "the other end", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the apparatus or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model. Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present utility model, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "configured/arranged," "coupled," "connected," and the like are to be construed broadly and include, for example, "connected," either fixedly, detachably, or integrally; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.
A waveguide isolator, comprising: the upper waveguide cover plate is fixedly connected with the lower waveguide cavity.
As shown in fig. 1, the lower waveguide cavity includes: a first cavity 7, a second cavity 8 and a third cavity 10. One end of the first cavity 7, one end of the second cavity 8 and one end of the third cavity 10 are connected such that the first cavity 7, the second cavity 8 and the third cavity 10 form a communicating cavity. The other end of the first cavity 7 is open and serves as an output port of the waveguide isolator. The other end of the second cavity 8 is connected with a waveguide input cavity 9, one end of the waveguide input cavity 9 is connected with the communicating cavity, and the other end of the waveguide input cavity 9 is open and serves as a waveguide input port of the waveguide isolator. The other end of the third cavity 10 is opened, and is used as a load port of the waveguide isolator, a load 6 is arranged at the third cavity 10, and the load 6 is used for absorbing residual power in the waveguide and preventing reflected waves.
The waveguide isolator of the embodiment adopts a structure, so that the transmission loss of electromagnetic waves in the waveguide isolator can be increased, reflection is reduced, isolation effect is improved, signal interference is prevented, signal transmission is ensured, and the waveguide is protected.
As shown in fig. 1, a first center step 3 is arranged at the communication position of the first cavity 7, the second cavity 8 and the third cavity 10, and a second center step 4 is arranged at the top of the first center step 3. In the present embodiment, as shown in fig. 1, the first center step 3 and the second center step 4 are triangular, and the second center step 4 is connected to the first center step 3 by fixing pins 5 provided in three directions of the triangle.
The top of the second center step 4 is provided with a recess, and ferrite 2 is arranged in the recess, and the ferrite 2 is used for isolating current and suppressing high-frequency noise. The ferrite 2 has the characteristics of high magnetic induction intensity and high magnetic saturation field, has stability and heat resistance, and can strengthen the magnetic induction intensity.
As shown in fig. 1, the surface of the ferrite 2 is covered with an insulator 1, and the insulator 1 compresses the ferrite 2 in the recess through the debugging cover plate. The upper waveguide cover plate is provided with a magnetic steel hole which can be in clearance fit with the second center step 4. A permanent magnet is arranged in the magnetic steel hole and is used for enabling the ferrite 2 to be positioned in the magnetic steel hole.
In the present embodiment, the material of the insulator 1 is PTFE.
The first cavity 7 is composed of a plurality of cavity sections, the center lines of which are parallel, so that the first cavity 7 has a bend. In this embodiment, as shown in fig. 1, the first cavity 7 is composed of two cavity segments, the center lines of which are parallel, and have a partial area overlapping.
The cavity section with the opening in the plurality of cavity sections of the first cavity 7 is an output opening section, and the cavity sections connected with one end of the second cavity 8 and one end of the third cavity 10 are communication sections. The caliber of the cavity sections from the communication section to the output opening section is gradually increased, specifically: the length and/or width of the rectangle increases from the communication section to the longitudinal section of the output opening section, wherein the longitudinal section is the face perpendicular to the direction of the communication section to the output opening section.
In the present embodiment, as shown in fig. 1, the diameters of the plurality of cavity sections of the first cavity 7 from the communication section to the output opening section are increased, and the length of the rectangle of the longitudinal section is increased.
The second cavity 8 is formed by a plurality of cavity sections and is of an L-shaped bending structure; the outer side edge of the L-shaped bending structure is gradually bent, and the inner side edge is right-angle bent. In this embodiment, as shown in fig. 1, the second cavity 8 is composed of two cavity segments, the center lines of which are perpendicular. The outer side edge of the L-shaped bending structure is gradually bent, and the inner side edge is right-angle bent.
The cavity sections of the plurality of cavity sections of the second cavity 8, which are connected with the waveguide input cavity 9, are input sections, and the cavity sections connected with one end of the first cavity 7 and one end of the third cavity 10 are communication sections; the caliber of the cavity sections from the communication section to the input section increases.
In this embodiment, the first cavity 7 has a bent structure, and the second cavity 8 has an L-shaped bent structure, so that the input end and the output end of the waveguide isolator are not in a straight line, and the application requirements of some nonlinear transmission scenes can be satisfied.
In the embodiment, the caliber of the first cavity 7 from the communication section to the plurality of cavity sections of the output opening section is increased, and the caliber of the second cavity 8 from the communication section to the plurality of cavity sections of the input section is increased, so that the performance of the waveguide isolator can be ensured without increasing the volume of the waveguide isolator, and the application requirements of inconsistent input and output calibers of the waveguide can be solved; the waveguide isolator has the advantages of small volume, wide applicability and low cost.
In the description of the present utility model, unless otherwise indicated, the meaning of "a plurality" is two or more; the terms "upper," "lower," "left," "right," "inner," "outer," "front," "rear," "head," "tail," and the like are used as an orientation or positional relationship based on that shown in the drawings, merely to facilitate description of the utility model and to simplify the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the utility model. Furthermore, the terms "first," "second," "third," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present utility model, it should be noted that, unless explicitly specified and limited otherwise, the terms "connected," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.
Although the present utility model has been described with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described, or equivalents may be substituted for elements thereof, and any modifications, equivalents, improvements and changes may be made without departing from the spirit and principles of the present utility model.
Claims (10)
1. A waveguide isolator, comprising: the upper waveguide cover plate is fixedly connected with the lower waveguide cavity;
the lower waveguide cavity includes: the first cavity, the second cavity and the third cavity;
One end of the first cavity, one end of the second cavity and one end of the third cavity are connected, so that the first cavity, the second cavity and the third cavity form a communicated cavity;
The other end of the first cavity is opened and is used as an output port of the waveguide isolator;
The other end of the second cavity is connected with a waveguide input cavity, one end of the waveguide input cavity is connected with the communication cavity, and the other end of the waveguide input cavity is opened and serves as a waveguide input port of the waveguide isolator;
the other end of the third cavity is open and serves as a load port of the waveguide isolator.
2. The waveguide isolator as claimed in claim 1, wherein a first center step is provided at a communication position of the first cavity, the second cavity and the third cavity, a second center step is provided at a top of the first center step, a recess is provided at a top of the second center step, and ferrite is provided in the recess, and the ferrite is used for isolating current and suppressing high frequency noise.
3. The waveguide isolator of claim 2, wherein the surface of the ferrite is covered with an insulator that compresses the ferrite within the recess through a tuning cover plate.
4. The waveguide isolator as in claim 2, wherein the upper waveguide cover plate has a magnet steel hole therein, the magnet steel hole being in clearance fit with the second center step; a permanent magnet is arranged in the magnetic steel hole and used for enabling the ferrite to be positioned in the magnetic steel hole.
5. The waveguide isolator of claim 2, wherein the second center step is connected to the first center step by a fixed pin.
6. The waveguide isolator of claim 1, wherein the first cavity is comprised of a plurality of cavity segments, the centerlines of the plurality of cavity segments being parallel such that the first cavity has a bend.
7. The waveguide isolator as claimed in claim 6, wherein a cavity section having an opening among the plurality of cavity sections is an output opening section, and a cavity section connected to one end of the second cavity and one end of the third cavity is a communication section; the caliber of the cavity sections from the communication section to the output opening section is gradually increased, specifically: the length and/or width of the rectangle from the communication section to the longitudinal section of the output opening section increases gradually, and the longitudinal section is a surface perpendicular to the direction from the communication section to the output opening section.
8. The waveguide isolator of claim 1, wherein the second cavity is comprised of a plurality of cavity segments in an L-bend configuration; the outer side edge of the L-shaped bending structure is gradually bent, and the inner side edge is right-angle bent.
9. The waveguide isolator as claimed in claim 8, wherein a cavity section of the plurality of cavity sections connected to the waveguide input cavity is an input section, and a cavity section connected to one end of the first cavity and one end of the third cavity is a communication section; the caliber of the cavity sections from the communication section to the input section increases gradually.
10. The waveguide isolator of claim 1, wherein a load is provided at the third cavity, the load being configured to absorb residual power in the waveguide to prevent reflected waves.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202323637444.XU CN221632830U (en) | 2023-12-29 | 2023-12-29 | Waveguide isolator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202323637444.XU CN221632830U (en) | 2023-12-29 | 2023-12-29 | Waveguide isolator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN221632830U true CN221632830U (en) | 2024-08-30 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202323637444.XU Active CN221632830U (en) | 2023-12-29 | 2023-12-29 | Waveguide isolator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN221632830U (en) |
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2023
- 2023-12-29 CN CN202323637444.XU patent/CN221632830U/en active Active
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