CN215771494U - Waveguide circulator with harmonic suppression - Google Patents
Waveguide circulator with harmonic suppression Download PDFInfo
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- CN215771494U CN215771494U CN202122435021.4U CN202122435021U CN215771494U CN 215771494 U CN215771494 U CN 215771494U CN 202122435021 U CN202122435021 U CN 202122435021U CN 215771494 U CN215771494 U CN 215771494U
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- harmonic suppression
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Abstract
The utility model discloses a waveguide circulator with harmonic suppression, which comprises an upper shell, a lower shell and two waveguide coaxial adapters, wherein the lower shell is in threaded connection with a plurality of mounting screws, the lower shell is fixedly connected with the upper shell through the plurality of mounting screws, a standard waveguide port is arranged on the outer side of the joint of the upper shell and the lower shell, and a Y-shaped waveguide cavity is arranged in the middle of the joint of the upper shell and the lower shell. So that the second harmonic generated by the power amplifier can be effectively inhibited.
Description
Technical Field
The utility model relates to the technical field of waveguide circulators, in particular to a waveguide circulator with harmonic suppression.
Background
The circulator is a device for realizing unidirectional annular transmission of electromagnetic waves, and is used in modern radars and multipath communication. In the field of satellite communication, a waveguide circulator is used for broadband signal shunting; the isolator is formed by the waveguide circulator and the load at the rear end of the power amplifier to realize reverse isolation of signals, so that the short circuit or the open circuit of the power amplifier is protected; and the isolation switch can be used as a receiving and transmitting switch to realize the effective isolation of a receiving and transmitting system. Ferrite material is used as medium, and has ring-shaped characteristic by applying constant magnetic field. If the direction of the magnetic bias is changed, the circular direction is also changed. The principle of the circulator is still that the magnetic field deflects the anisotropic property of ferrite material, and the circulator can be divided into the following parts according to the implementation form of a transmission line: microstrip type, stripline type, coaxial type, and waveguide type. Wherein the most strip line type and the most waveguide type power capacity.
Most of the waveguide circulators with harmonic suppression in the market at present have a bandpass or lowpass filter cascaded at one end of a Y-type waveguide circulator to suppress the second harmonic generated by a power amplifier. This tends to increase the volume and weight of the circulator. Not only does the increase in volume and weight of the device increase the processing cost, but the bulky large device also increases the probability of bidding failure.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a waveguide circulator with harmonic suppression, which aims to solve the problem that most of the waveguide circulators with harmonic suppression in the market currently proposed in the background art are connected with a band-pass or low-pass filter in series at one end of a Y-shaped waveguide circulator to achieve the purpose of suppressing the second harmonic generated by a power amplifier. This tends to increase the volume and weight of the circulator. The increased size and weight of the device not only increases the processing cost, but also the heavy and large device increases the probability of bidding failure.
In order to achieve the purpose, the utility model provides the following technical scheme: a waveguide circulator with harmonic suppression comprises an upper shell, a lower shell and two waveguide coaxial adapters, wherein the lower shell is in threaded connection with a plurality of mounting screws, the lower shell is fixedly connected with the upper shell through the mounting screws, a standard waveguide port is formed in the outer side of the joint of the upper shell and the lower shell, a Y-shaped waveguide cavity is formed in the middle of the joint of the upper shell and the lower shell, two regular-triangular metal matching blocks are arranged in the center of the Y-shaped waveguide cavity, circular low-loss ferrite is pasted at the centers of the opposite sides of the two regular-triangular metal matching blocks, metal matching cylinders are arranged at three corners of the two regular-triangular metal matching blocks, the two metal matching cylinders correspond to each other in pairs, harmonic suppression pins are arranged on two sides of each corresponding metal matching cylinder, and the waveguide coaxial adapters are installed on two sides of the top end of the upper shell, go up the middle part on casing top and the middle part of casing bottom down and all seted up circular recess, two the inside of circular recess all installs samarium cobalt permanent magnet, two samarium cobalt permanent magnet polarity is placed relatively.
Preferably, the two regular triangle metal matching blocks are respectively connected with the upper shell and the lower shell.
Preferably, the six metal matching cylinders respectively face six corners of the two regular triangle metal matching blocks, and two ends of the six metal matching cylinders are respectively connected with the upper shell and the lower shell.
Preferably, the periphery of the standard waveguide port is provided with a plurality of mounting holes.
Preferably, the standard waveguide port is communicated with one end of the Y-shaped waveguide cavity, and the two waveguide coaxial adapters extend to the other two ends of the Y-shaped waveguide cavity respectively.
Preferably, the periphery of the two circular grooves is provided with a plurality of uniformly distributed fixing screws, and the two circular grooves are fixedly connected with the cover plate through the plurality of fixing screws.
Compared with the prior art, the utility model has the beneficial effects that: the waveguide circulator can normally realize unidirectional annular transmission by adjusting the circular low-loss ferrite, the regular triangle metal matching block and the metal matching cylinder, realize second harmonic suppression by adjusting the position and the size of the harmonic suppression pin, and increase the suppression degree by increasing the number of the harmonic suppression pins, thereby effectively suppressing the second harmonic generated by a power amplifier under the condition of ensuring that the size and the weight of the waveguide circulator are not changed.
Drawings
FIG. 1 is a side view of the present invention;
FIG. 2 is a schematic view of the internal structure of the present invention;
fig. 3 is a cross-sectional view of the present invention.
In the figure: 1. an upper housing; 2. a lower housing; 3. a regular triangular metal matching block; 4. a metal matching cylinder; 5. a harmonic suppression pin; 6. a circular low-loss ferrite; 7. a cover plate; 8. a waveguide coaxial adapter; 9. a standard waveguide port; 10. a set screw; 11. a samarium cobalt permanent magnet; 12. mounting holes; 13. a circular groove; 14. mounting screws; 15. and a Y-shaped waveguide cavity.
Detailed Description
The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.
Referring to fig. 1-3, the present invention provides a waveguide circulator with harmonic suppression, which comprises an upper housing 1, a lower housing 2 and two waveguide coaxial adapters 8, wherein the lower housing 2 is in threaded connection with a plurality of mounting screws 14, the lower housing 2 is fixedly connected with the upper housing 1 through the plurality of mounting screws 14, the upper housing 1 and the lower housing 2 are fixedly mounted through the plurality of mounting screws 14, so that the upper housing 1 and the lower housing 2 are tightly attached to ensure normal transmission of electromagnetic waves without leakage, a standard waveguide port 9 is formed at the outer side of the joint of the upper housing 1 and the lower housing 2, a Y-shaped waveguide cavity 15 is formed at the middle of the joint of the upper housing 1 and the lower housing 2, two regular triangular metal matching blocks 3 are arranged at the center of the Y-shaped waveguide cavity 15, a circular low-loss ferrite 6 is adhered to the centers of the opposite sides of the two regular triangular metal matching blocks 3, the circular low-loss ferrite 6 is located at the center of the regular triangular metal matching blocks 3, as the metal matching block is of a circular design and is symmetrical at 360 degrees, mismatching caused by inconsistency of angles can be avoided, three corners of two regular triangle metal matching blocks 3 are provided with metal matching cylinders 4, the two metal matching cylinders 4 correspond pairwise, the six metal matching cylinders 4 ensure symmetry of upper and lower electromagnetic fields, power capacity is improved, two sides of each two corresponding metal matching cylinders 4 are provided with harmonic suppression pins 5, the six harmonic suppression pins 5 can effectively suppress second harmonics, and short circuit pins suppress second harmonicsThe second harmonic principle is as follows: waveguide circulator at fundamental frequency f0Above is TE10Mode ring transmission, but at the second harmonic 2f0Up through a circulator and then TE10Conversion to TE20The mode, six short circuit pins, is used for inhibiting the second harmonic TE on the basis of not influencing the fundamental frequency main mode transmission20The transmission of mode, thereby realize the harmonic suppression, coaxial adapter 8 of waveguide is all installed to the both sides on 1 top of last casing, waveguide circulator has standard waveguide port 9 and two coaxial adapter 8 of waveguide, the design performance has been guaranteed in three device integration processing, and the cost is reduced, circular slot 13 has all been seted up at the middle part on 1 top of last casing and the middle part of casing 2 bottom down, samarium cobalt permanent magnet 11 is all installed to the inside of two circular slot 13, 11 polarity of two samarium cobalt permanent magnets are placed relatively, two samarium cobalt permanent magnets 11 set up in the circular slot 13 internal polarity that upper casing 1 and casing 2 surface central point put and set up relatively, provide invariable magnetic bias for the ferrite.
Two regular triangle metal matching blocks 3 are respectively connected with an upper shell 1 and a lower shell 2, the upper shell 1 and the lower shell 2 are respectively fixed with the two regular triangle metal matching blocks 3, six metal matching cylinders 4 are respectively dead against six corners of the two regular triangle metal matching blocks 3, two ends of the six metal matching cylinders 4 are respectively connected with the upper shell 1 and the lower shell 2, and the upper shell 1 and the lower shell 2 are fixed with the six metal matching cylinders 4.
The periphery of the standard waveguide port 9 is provided with a plurality of mounting holes 12, the standard waveguide port 9 is connected with a waveguide joint through the plurality of mounting holes 12, the standard waveguide port 9 is communicated with one end of the Y-shaped waveguide cavity 15, the two waveguide coaxial adapters 8 respectively extend to the other two ends of the Y-shaped waveguide cavity 15, the waveguide circulator is provided with the standard waveguide port 9 and the two waveguide coaxial adapters 8, the three devices are integrally processed, the design performance is guaranteed, and the cost is reduced.
The periphery of two circular grooves 13 all is equipped with a plurality of evenly distributed's set screw 10, and two circular grooves 13 all are through a plurality of set screw 10 and 7 fixed connection of apron, and two apron 7 pass through set screw 10 and last casing 1 and lower casing 2 fixed connection, protect two samarium cobalt permanent magnets 11.
When the embodiment of the application is used: the upper shell 1 and the lower shell 2 are fixedly installed through a plurality of installation screws 14, so that the upper shell 1 and the lower shell 2 are tightly attached to ensure that the normal transmission of electromagnetic waves is not leaked, a Y-shaped waveguide cavity 15 is arranged in the middle of the joint of the upper shell 1 and the lower shell 2, two regular triangle metal matching blocks 3 are arranged at the Y-shaped part of the Y-shaped waveguide cavity 15, the matching bandwidth can be greatly increased through the two regular triangle metal matching blocks 3, 360-degree symmetry of the ferrite can be ensured when the regular triangle metal matching blocks 3 are attached by selecting the circular low-loss ferrite 6, the debugging difficulty caused by the deviation of the attaching direction is avoided, six metal matching cylinders 4 and the upper shell 1 and the lower shell 2 are processed together, the debugging difficulty is further reduced, harmonic suppression pins 5 are added at two sides of each pair of the metal matching cylinders 4 and are used for suppressing a higher mode generated after the Y-shaped waveguide circulator passes through the circular low-loss ferrite 6, therefore, the second harmonic is effectively inhibited, the two samarium-cobalt permanent magnets 11 are respectively arranged outside the waveguide cavity, the polarities of the two samarium-cobalt permanent magnets are opposite, constant magnetic bias is provided for the circular low-loss ferrite 6, the waveguide circulator is provided with a standard waveguide port 9 and two waveguide coaxial adapters 8, the three waveguide ports of the waveguide circulator are integrally processed, the design performance is guaranteed, and the cost is reduced.
Although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that various changes in the embodiments and/or modifications of the utility model can be made, and equivalents and modifications of some features of the utility model can be made without departing from the spirit and scope of the utility model.
Claims (6)
1. The utility model provides a take waveguide circulator of harmonic suppression, includes upper casing (1), lower casing (2) and two waveguide coaxial adapter (8), its characterized in that: the lower shell (2) is in threaded connection with a plurality of mounting screws (14), the lower shell (2) is fixedly connected with the upper shell (1) through the plurality of mounting screws (14), a standard waveguide port (9) is formed in the outer side of the joint of the upper shell (1) and the lower shell (2), a Y-shaped waveguide cavity (15) is formed in the middle of the joint of the upper shell (1) and the lower shell (2), two regular-triangular metal matching blocks (3) are arranged at the center of the Y-shaped waveguide cavity (15), circular low-loss ferrites (6) are adhered to the centers of the two opposite sides of the regular-triangular metal matching blocks (3), metal matching cylinders (4) are arranged at three corners of the two regular-triangular metal matching blocks (3), the two metal matching cylinders (4) correspond to each other, and harmonic suppression pins (5) are arranged on two sides of each two corresponding metal matching cylinders (4), go up the both sides on casing (1) top and all install waveguide coaxial adapter (8), round slot (13), two have all been seted up at the middle part on last casing (1) top and the middle part of casing (2) bottom down the inside of round slot (13) all installs samarium cobalt permanent magnet (11), two samarium cobalt permanent magnet (11) polarity is placed relatively.
2. A waveguide circulator with harmonic suppression as claimed in claim 1 wherein: the two regular triangle metal matching blocks (3) are respectively connected with the upper shell (1) and the lower shell (2).
3. A waveguide circulator with harmonic suppression as claimed in claim 1 wherein: six metal matching cylinders (4) are respectively opposite to six corners of the two regular triangle metal matching blocks (3), and two ends of the six metal matching cylinders (4) are respectively connected with the upper shell (1) and the lower shell (2).
4. A waveguide circulator with harmonic suppression as claimed in claim 1 wherein: and a plurality of mounting holes (12) are formed in the periphery of the standard waveguide port (9).
5. A waveguide circulator with harmonic suppression as claimed in claim 1 wherein: the standard waveguide port (9) is communicated with one end of the Y-shaped waveguide cavity (15), and the two waveguide coaxial adapters (8) respectively extend to the other two ends of the Y-shaped waveguide cavity (15).
6. A waveguide circulator with harmonic suppression as claimed in claim 1 wherein: the periphery of the two circular grooves (13) is provided with a plurality of uniformly distributed fixing screws (10), and the two circular grooves (13) are fixedly connected with the cover plate (7) through the plurality of fixing screws (10).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122435021.4U CN215771494U (en) | 2021-10-11 | 2021-10-11 | Waveguide circulator with harmonic suppression |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122435021.4U CN215771494U (en) | 2021-10-11 | 2021-10-11 | Waveguide circulator with harmonic suppression |
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| Publication Number | Publication Date |
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| CN215771494U true CN215771494U (en) | 2022-02-08 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202122435021.4U Active CN215771494U (en) | 2021-10-11 | 2021-10-11 | Waveguide circulator with harmonic suppression |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115513626A (en) * | 2022-11-03 | 2022-12-23 | 南京天朗防务科技有限公司 | High-power annular filter |
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2021
- 2021-10-11 CN CN202122435021.4U patent/CN215771494U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115513626A (en) * | 2022-11-03 | 2022-12-23 | 南京天朗防务科技有限公司 | High-power annular filter |
| CN115513626B (en) * | 2022-11-03 | 2023-03-24 | 南京天朗防务科技有限公司 | High-power annular filter |
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