CN205028990U - Low intermodulation waveguide junction circulator - Google Patents
Low intermodulation waveguide junction circulator Download PDFInfo
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- CN205028990U CN205028990U CN201520757521.1U CN201520757521U CN205028990U CN 205028990 U CN205028990 U CN 205028990U CN 201520757521 U CN201520757521 U CN 201520757521U CN 205028990 U CN205028990 U CN 205028990U
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Abstract
The utility model discloses a low intermodulation waveguide junction circulator adopts split type waveguide chamber, and the waveguide intracavity is equipped with two ferrites and a dielectric slab, and all edges of ferrite, dielectric slab carry out circular chamfer and handle, the utility model discloses an intermodulation performance of waveguide junction circulator is improved by a wide margin, and the intermodulation interference signal power reduction range of production exceedes 30dB.
Description
Technical field
The utility model relates to a kind of waveguide junction circulator of field of microwave communication, particularly relates to a kind of low intermodulation waveguide junction circulator.
Background technology
In Modern Communication System, no matter be civilian or military communication field, due to the communication expansion of region and the increase of transmission information amount, require that communication system is towards the future development of the larger power output of high frequency, current communication frequency application is up to 100GHz.As everyone knows, more than in the system of 30GHz, coaxial, band line, microstrip structure microwave device basic size may need in units of um, and its difficulty of processing is large, bears power little, test difficulty.So the application of Wave guide system has extremely huge advantage, but along with the increase of system power, the non-linear intermodulation interference signal produced in system may be multiplied, circulator is due to the characteristic of its ferrimagnet, it is the device the most easily producing Intermodulation Interference, current common waveguide circulator adopts Y shape section type structure without product, as the circulator of Chinese Industrial Standards (CIS) model BJ70 specification, under input power 10W condition, third order intermodulation is about-110dBc (intermodulation interference signal power is-70dBm), can not practical requirement.
Utility model content
Technical problem to be solved in the utility model reduces the Intermodulation Interference problem of common waveguide circulator.
For solving described technical problem above, the low intermodulation waveguide junction circulator of one described in the utility model, adopts split type waveguide cavity, described split type waveguide cavity comprises upper cavity 1 and lower chamber 2, upper cavity 1 and lower chamber 2 use screw fastening, form a Y shape joint formula waveguide cavity, in described waveguide cavity, lower surface is arranged with circular hole 3, lower circular hole, in waveguide cavity, brace table is provided with inside lower surface, lower support platform 7, goes up ferrite 4 from top to bottom in described waveguide cavity successively, PTFE medium sheet 5, lower ferrite 6, described upper ferrite 4, PTFE medium sheet 5, lower ferrite 6 and upper brace table, adopt between lower support platform 7 that hyperthermia drying is gluing to be connect, described upper brace table, upper ferrite 4, PTFE medium sheet 5, lower ferrite 6, lower support platform 7 is triangle, and its seamed edge is equipped with rounded corners, is provided with permanent magnet 8 successively outside described waveguide cavity upper surface circular hole 3, upper cover plate 9, is provided with lower permanent magnet 10 outside waveguide cavity lower surface circular hole successively, lower cover 11.
The technical scheme be more preferably is, the flange face of described waveguide cavity is provided with the high boss of 0.1mm to 0.2mm outside waveguide mouth.
In the utility model, dieelctric sheet is not only played a supporting role to two panels ferrite, simultaneously, when ferrite magnetizes under permanent magnet magnetic field action, while guarantee ferrite magnetizing field strength, add the electrical distance between two panels ferrite, largely reduce the intermodulation that magnetic material causes; Brace table, ferrite, dieelctric sheet all carry out chamfered, avoid the appearance of acute angle to produce intermodulation product; In addition, waveguide cavity flange face is provided with the high boss of 0.1mm to 0.2mm outside waveguide mouth, make circulator and other device contacts faces less and evenly.
Adopt the technical solution of the utility model, the waveguide junction circulator of BJ70 specification, under input power 10W condition, third order intermodulation is less than-140dBc (intermodulation interference signal power is less than-100dBm).Achieve the effect of extraordinary reduction intermodulation, completely can practical requirement.
Accompanying drawing explanation
Fig. 1 is low intermodulation waveguide junction circulator outline drawing
Fig. 2 is low intermodulation circulator exploded view
Wherein: 1, upper cavity, 2, lower chamber, 3, upper circular hole, 4, upper ferrite, 5, PTFE medium sheet, 6, lower ferrite, 7, lower support platform, 8, upper permanent magnet, 9, upper cover plate, 10, lower permanent magnet, 11, lower cover.
Embodiment
Illustrate how to implement the utility model below in conjunction with accompanying drawing.
As shown in Figure 2, adopt the low intermodulation waveguide junction circulator of one of Chinese Industrial Standards (CIS) BJ70, adopt split type waveguide cavity, described split type waveguide cavity comprises upper cavity 1 and lower chamber 2, upper cavity 1 and lower chamber 2 use screw fastening, form a Y shape joint formula waveguide cavity, in described waveguide cavity, lower surface is arranged with circular hole 3, lower circular hole, in waveguide cavity, brace table is provided with inside lower surface, lower support platform 7, goes up ferrite 4 from top to bottom in described waveguide cavity successively, PTFE medium sheet 5, lower ferrite 6, described upper ferrite 4, PTFE medium sheet 5, lower ferrite 6 and upper brace table, adopt between lower support platform 7 that hyperthermia drying is gluing to be connect, described upper brace table, upper ferrite 4, PTFE medium sheet 5, lower ferrite 6, lower support platform 7 is triangle, and its seamed edge is equipped with rounded corners, is provided with permanent magnet 8 successively outside described waveguide cavity upper surface circular hole 3, upper cover plate 9, is provided with lower permanent magnet 10 outside waveguide cavity lower surface circular hole successively, lower cover 11, the flange face of described waveguide cavity is provided with the high boss of 0.1mm to 0.2mm outside waveguide mouth.
This specific embodiment, adopt the waveguide junction circulator of BJ70 specification, under input power 10W condition, third order intermodulation is less than-140dBc (intermodulation interference signal power is less than-100dBm), achieve the effect of extraordinary reduction intermodulation, completely can practical requirement.
Claims (2)
1. one kind low intermodulation waveguide junction circulator, adopt split type waveguide cavity, described split type waveguide cavity comprises upper cavity (1) and lower chamber (2), upper cavity (1) and lower chamber (2) use screw fastening, form a Y shape joint formula waveguide cavity, in described waveguide cavity, lower surface is arranged with circular hole (3), lower circular hole, in waveguide cavity, brace table is provided with inside lower surface, lower support platform (7), goes up ferrite (4) from top to bottom in described waveguide cavity successively, PTFE medium sheet (5), lower ferrite (6), described upper ferrite (4), PTFE medium sheet (5), lower ferrite (6) and upper brace table, adopt between lower support platform (7) that hyperthermia drying is gluing to be connect, described upper brace table, upper ferrite (4), PTFE medium sheet (5), lower ferrite (6), lower support platform (7) is triangle, and its seamed edge is equipped with rounded corners, and described waveguide cavity upper surface circular hole (3) outside is provided with permanent magnet (8) successively, upper cover plate (9), is provided with lower permanent magnet (10) successively outside waveguide cavity lower surface circular hole, lower cover (11).
2. the low intermodulation waveguide junction circulator of one according to claim 1, is characterized in that, the flange face of described waveguide cavity is provided with the high boss of 0.1mm to 0.2mm outside waveguide mouth.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520757521.1U CN205028990U (en) | 2015-09-25 | 2015-09-25 | Low intermodulation waveguide junction circulator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520757521.1U CN205028990U (en) | 2015-09-25 | 2015-09-25 | Low intermodulation waveguide junction circulator |
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| Publication Number | Publication Date |
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| CN205028990U true CN205028990U (en) | 2016-02-10 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201520757521.1U Active CN205028990U (en) | 2015-09-25 | 2015-09-25 | Low intermodulation waveguide junction circulator |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106207348A (en) * | 2016-08-30 | 2016-12-07 | 江苏贝孚德通讯科技股份有限公司 | A kind of waveguide junction circulator |
| CN106785283A (en) * | 2017-02-21 | 2017-05-31 | 南京广顺电子技术研究所 | Three port co-planar waveguide circulators |
-
2015
- 2015-09-25 CN CN201520757521.1U patent/CN205028990U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106207348A (en) * | 2016-08-30 | 2016-12-07 | 江苏贝孚德通讯科技股份有限公司 | A kind of waveguide junction circulator |
| CN106207348B (en) * | 2016-08-30 | 2022-03-29 | 江苏贝孚德通讯科技股份有限公司 | Waveguide circulator |
| CN106785283A (en) * | 2017-02-21 | 2017-05-31 | 南京广顺电子技术研究所 | Three port co-planar waveguide circulators |
| CN106785283B (en) * | 2017-02-21 | 2022-04-01 | 南京广顺电子技术研究所有限公司 | Three-port coplanar waveguide circulator |
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| C14 | Grant of patent or utility model | ||
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| CP01 | Change in the name or title of a patent holder |
Address after: 211132, No. three, No. seven, Tangshan industrial concentration area, Tangshan District, Jiangsu, Nanjing, Jiangning Patentee after: Nanjing Guangshun Electronic Technology Research Institute Co.,Ltd. Address before: 211132, No. three, No. seven, Tangshan industrial concentration area, Tangshan District, Jiangsu, Nanjing, Jiangning Patentee before: NANJING GUANGSHUN ELECTRONIC TECHNOLOGY Research Institute |
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| CP01 | Change in the name or title of a patent holder |