CN114421104B - 90-degree nonreciprocal phase shifter - Google Patents
90-degree nonreciprocal phase shifter Download PDFInfo
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- CN114421104B CN114421104B CN202111499683.6A CN202111499683A CN114421104B CN 114421104 B CN114421104 B CN 114421104B CN 202111499683 A CN202111499683 A CN 202111499683A CN 114421104 B CN114421104 B CN 114421104B
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- magnetic circuit
- ferrite
- circuit board
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01P—WAVEGUIDES; RESONATORS, LINES, OR OTHER DEVICES OF THE WAVEGUIDE TYPE
- H01P1/00—Auxiliary devices
- H01P1/18—Phase-shifters
- H01P1/19—Phase-shifters using a ferromagnetic device
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D30/00—Reducing energy consumption in communication networks
- Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks
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Abstract
The embodiment of the invention discloses a 90-degree nonreciprocal phase shifter, which comprises a waveguide, wherein the waveguide comprises two rectangular waveguide cavities arranged side by side; each rectangular waveguide cavity is provided with a magnetic circuit assembly; the magnetic circuit assembly includes: a first ferrite bonded to a top wall of the rectangular waveguide cavity; a second ferrite bonded to the bottom wall of the rectangular waveguide cavity; a first magnetic circuit board combined and fixed on the side wall of the rectangular waveguide cavity; two ends of the first magnetic circuit board are respectively and tightly attached to the first ferrite and the second ferrite; combining a first permanent magnet fixed on the upper surface of the waveguide; a second permanent magnet fixed on the lower surface of the waveguide; and the second magnetic circuit board is U-shaped and is combined and fixed with the first permanent magnet and the second permanent magnet respectively on the surface of one side of the second magnetic circuit board, which is far away from the waveguide. The problems of increased device loss, high peak power ignition and the like caused by nonlinear effects of ferrite can be solved.
Description
Technical Field
The present invention relates to the field of phase shifters. And more particularly to a 90 ° nonreciprocal phase shifter.
Background
Microwave ferrites appear at a certain working magnetic field at ferromagnetic formants, which are generally demarcated by the ferromagnetic formants, and are distinguished into low-field devices and high-field devices. The ferrite of the low-field device works below the ferromagnetic resonance peak, the required working magnetic field is low, and the magnetic field generated by the external permanent magnet is easy to achieve. However, the ferrite of the low-field device has a certain threshold in the aspect of bearing microwave power, if the applied microwave power is higher than the threshold, the ferrite has nonlinear effect, loss is increased sharply, device performance is reduced, and even high-power sparking damage occurs. The ferrite of the high-field device is not provided with a microwave power threshold value and a nonlinear effect because the ferrite works above a ferromagnetic resonance peak. However, because of the high working magnetic field required, the magnitude of the magnetic field generated by the externally applied permanent magnet is generally difficult to achieve.
The four-end difference phase shift circulator consists of a 3dB bridge, a magic T and a 90-degree nonreciprocal phase shifter, and is widely applied to high-power microwave systems due to the large capacity of the borne microwave power. The 90-degree nonreciprocal phase shifter is a core component of the four-terminal difference phase shift circulator and mainly comprises a double waveguide cavity, upper and lower layers of ferrite, upper and lower layers of permanent magnets, an outer cavity magnetic circuit board and the like.
Because of the large gap between the upper and lower ferrite layers and the large magnetic resistance, the magnetic field leakage generated by the upper and lower permanent magnets is serious, and the ferrite can be magnetized to a low field area generally, the maximum microwave power capacity of the 90-degree nonreciprocal phase shifter cannot exceed the threshold value when the ferrite has nonlinear effect, and the threshold value is far lower than the maximum power theoretical value which can be born by the four-terminal difference phase shift circulator. Therefore, the nonlinear effect of the ferrite operating in a low field severely restricts the further improvement of the four-terminal difference phase shift circulator in power capacity.
Disclosure of Invention
In order to solve the problems, the invention provides a 90-degree nonreciprocal phase shifter to solve the problems of increased device loss, high peak power ignition and the like caused by nonlinear effect of ferrite
In order to achieve the above purpose, the invention adopts the following technical scheme:
a 90 ° nonreciprocal phase shifter comprising:
the waveguide comprises two rectangular waveguide cavities arranged side by side and a common partition plate positioned between the two rectangular waveguide cavities;
each rectangular waveguide cavity is provided with a magnetic circuit assembly;
the magnetic circuit assembly includes:
a first ferrite bonded and fixed to a top wall of the rectangular waveguide cavity;
a second ferrite bonded and fixed to the bottom wall of the rectangular waveguide cavity;
a first magnetic circuit board combined and fixed on the side wall of the rectangular waveguide cavity;
two ends of the first magnetic circuit board are respectively and tightly attached to the first ferrite and the second ferrite;
a first permanent magnet fixed on the upper surface of the waveguide is combined, and the first permanent magnet is arranged corresponding to the first ferrite;
a second permanent magnet fixed on the lower surface of the waveguide is combined, and the second permanent magnet is arranged corresponding to the second ferrite; and
the second magnetic circuit board is U-shaped, and the second magnetic circuit board is combined and fixed with the surface of one side of the first permanent magnet and the second permanent magnet, which is far away from the waveguide, respectively.
In addition, preferably, the waveguide is a non-magnetic metal piece, and is made of copper or aluminum.
Furthermore, preferably, the second magnetic circuit board and the side wall of the waveguide are fixed by screw combination.
In addition, preferably, the first magnetic circuit board is made of a magnetically permeable metal material.
In addition, preferably, the material of the first magnetic circuit board is pure iron or No. 10 steel.
Furthermore, it is preferable that the first magnetic circuit board is disposed along the E-plane.
Furthermore, preferably, one end of the first ferrite and the second ferrite far away from the common partition board is clung to the side wall of the rectangular waveguide cavity.
The beneficial effects of this application are as follows:
to the technical problem that exists among the prior art, this application embodiment provides a 90 non-reciprocal phase shifter, first magnetic circuit board and first ferrite, the second ferrite of setting in rectangular waveguide intracavity, first permanent magnet, second permanent magnet and second magnetic circuit board have constituted a magnetic circuit closed structure together, the air gap total length of this magnetic circuit closed circuit is only the upper end and the lower end wall thickness of rectangular waveguide chamber, consequently the magnetic resistance is very little, the magnetic leakage is little, the permanent magnet can magnetize ferrite to more than the ferromagnetic formant, realize high-field work, avoid the nonlinear effect of ferrite of low-field work, peak power capacity has been improved. In addition, the 90-degree non-reciprocal phase shifter provided by the embodiment greatly reduces the length of an air gap and magnetic leakage by adding the first magnetic circuit board, so that ferrite can be magnetized to a region above a ferromagnetic resonance peak, high-field operation is realized, nonlinear effect of the ferrite under low-field operation is avoided, and peak power capacity is higher than that of the 90-degree non-reciprocal phase shifter under low-field operation.
Drawings
The following describes the embodiments of the present invention in further detail with reference to the drawings.
Fig. 1 shows a schematic structure of a 90 ° nonreciprocal phase shifter according to an embodiment of the present invention.
Fig. 2 shows an exploded schematic view of a 90 ° nonreciprocal phase shifter provided by an embodiment of the present invention.
Detailed Description
In order to more clearly illustrate the present invention, the present invention will be further described with reference to preferred embodiments and the accompanying drawings. Like parts in the drawings are denoted by the same reference numerals. It is to be understood by persons skilled in the art that the following detailed description is illustrative and not restrictive, and that this invention is not limited to the details given herein.
In the description of the present application, it should be noted that the azimuth or positional relationship indicated by the terms "upper", "lower", etc. are based on the azimuth or positional relationship shown in the drawings, and are merely for convenience of description of the present application and simplification of the description, and are not indicative or implying that the apparatus or element in question must have a specific azimuth, be configured and operated in a specific azimuth, and thus should not be construed as limiting the present application. Unless specifically stated or limited otherwise, the terms "mounted," "connected," and "coupled" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; 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 terms in this application will be understood by those of ordinary skill in the art as the case may be.
It should also be noted that in the description of the present application, relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.
In order to overcome the defects of the prior art, the embodiment of the invention provides a 90 ° nonreciprocal phase shifter, which is shown in fig. 1 and 2, wherein the 90 ° nonreciprocal phase shifter comprises a waveguide 1 and a magnetic circuit assembly 2, the waveguide 1 comprises two rectangular waveguide cavities 3 arranged side by side and a common partition plate 4 positioned between the two rectangular waveguide cavities 3, the shape and the size of the two rectangular waveguide cavities 3 are identical, and the cross section of the rectangular waveguide cavity 3 is a standard rectangular waveguide caliber: the broad side is a, and the narrow side is b. In this embodiment, the magnetic circuit assembly comprises two groups of magnetic circuit assemblies 2, and each rectangular waveguide cavity 3 is configured with one group of magnetic circuit assemblies 2; the two sets of magnetic circuit assemblies 2 are symmetrically arranged with respect to said common diaphragm 4.
In one embodiment, the magnetic circuit assembly 2 comprises two ferrites, two permanent magnets and two magnetic circuit plates. Specifically, the mounting positions of the respective constituent parts of the magnetic circuit assembly 2 are described by taking one of the rectangular waveguide cavities as an example. Two ferrites are adhered to the inside of the rectangular waveguide cavity 3, namely a first ferrite 21 adhered to the top wall of the inside of the rectangular waveguide cavity 3 and a second ferrite 22 adhered to the bottom wall of the inside of the rectangular waveguide cavity 3, wherein the first ferrite 21 and the second ferrite 22 are oppositely arranged. The two permanent magnets are adhered to the outside of the rectangular waveguide cavity 3, namely, are arranged on the outer surface of the waveguide, namely, are respectively a first permanent magnet 23 adhered to the upper surface 11 of the waveguide 1 and a second permanent magnet 24 adhered to the lower surface 12 of the waveguide 1, wherein the first permanent magnet 23 corresponds to the position of the first ferrite 21, and the second permanent magnet 24 corresponds to the position of the second ferrite 22. The two magnetic circuit boards are respectively a first magnetic circuit board 25 arranged in the rectangular waveguide cavity 3 and a second magnetic circuit board 26 arranged outside the rectangular waveguide cavity 3, the first magnetic circuit board 25 is arranged on the side wall 30 inside the rectangular waveguide cavity 3, and the upper end and the lower end of the first magnetic circuit board 25 are respectively tightly attached to and connected with one side surface of the first ferrite 21 and the second ferrite 22, which are far away from the upper wall surface and the lower wall surface of the rectangular waveguide cavity 3. The second magnetic circuit board 26 is a U-shaped magnetic circuit board, the second magnetic circuit board 26 is disposed outside the rectangular waveguide cavity 3, and the inner wall of the second magnetic circuit board 26 is adhered and fixed to one side surface of the first permanent magnet 23 and the second permanent magnet 24, which is far away from the outer surface of the waveguide 1, respectively. The first magnetic circuit board 25, the first ferrite 21, the second ferrite 22, the first permanent magnet 23, the second permanent magnet 24 and the second magnetic circuit board 26 together form a magnetic circuit closed structure, and the total length of an air gap of the magnetic circuit closed loop is only the thickness of the upper end and the lower end wall of the rectangular waveguide cavity 3, so that the magnetic resistance is very small, the magnetic leakage is small, the permanent magnet can magnetize the ferrite above a ferromagnetic resonance peak, high-field work is realized, the nonlinear effect of the ferrite working in a low field is avoided, and the peak power capacity is improved.
In one embodiment, the waveguide 1 is a non-magnetically conductive metal piece, and the material of the waveguide 1 is copper or aluminum.
In a specific embodiment, the second magnetic circuit board 26 and the waveguide wall of the waveguide 1 are fixed by screw bonding.
In a specific embodiment, the first magnetic circuit board 25 is made of a magnetically permeable metal material.
In a preferred embodiment, the first magnetic circuit board 25 is made of pure iron or No. 10 steel.
In one embodiment, the first magnetic circuit board 25 is placed along the E-plane.
In one embodiment, the ends of the first ferrite 21 and the second ferrite 22 remote from the common partition 4 are in close proximity to the side wall 30 inside the rectangular waveguide cavity 3.
The 90-degree non-reciprocal phase shifter provided in this embodiment greatly reduces the length of the air gap and reduces the magnetic leakage by adding the first magnetic circuit board 25, so that the ferrite can be magnetized to the area above the ferromagnetic resonance peak, and high-field operation is realized, thereby avoiding the nonlinear effect of the ferrite under low-field operation, and enabling the peak power capacity to be higher than that of the 90-degree non-reciprocal phase shifter under low-field operation.
It should be understood that the foregoing examples of the present invention are provided merely for clearly illustrating the present invention and are not intended to limit the embodiments of the present invention, and that various other changes and modifications may be made therein by one skilled in the art without departing from the spirit and scope of the present invention as defined by the appended claims.
Claims (7)
1. A 90 ° nonreciprocal phase shifter, comprising:
the waveguide comprises two rectangular waveguide cavities which are arranged side by side left and right and a common partition plate positioned between the two rectangular waveguide cavities;
each rectangular waveguide cavity is provided with a magnetic circuit assembly;
the magnetic circuit assembly includes:
a first ferrite bonded and fixed to a top wall of the rectangular waveguide cavity;
a second ferrite bonded and fixed to the bottom wall of the rectangular waveguide cavity;
a first magnetic circuit board combined and fixed on the side wall of the rectangular waveguide cavity;
two ends of the first magnetic circuit board are respectively and tightly attached to the first ferrite and the second ferrite;
a first permanent magnet fixed on the upper surface of the waveguide is combined, and the first permanent magnet is arranged corresponding to the first ferrite;
a second permanent magnet fixed on the lower surface of the waveguide is combined, and the second permanent magnet is arranged corresponding to the second ferrite; and
the second magnetic circuit board is U-shaped, and the second magnetic circuit board is combined and fixed with the surface of one side of the first permanent magnet and the second permanent magnet, which is far away from the waveguide, respectively.
2. The 90 ° non-reciprocal phase shifter of claim 1, wherein the waveguide is a non-magnetically permeable metal piece, made of copper or aluminum.
3. The 90 ° non-reciprocal phase shifter of claim 1, wherein the second magnetic circuit board is fixed with the side wall of the waveguide by a screw bond.
4. The 90 ° non-reciprocal phase shifter of claim 1, wherein the material of the first magnetic circuit board is magnetically permeable metal material.
5. The 90 ° non-reciprocal phase shifter of claim 4, wherein the first magnetic circuit board is pure iron or No. 10 steel.
6. The 90 ° non-reciprocal phase shifter of claim 1, wherein the first magnetic circuit board is disposed along the E-plane.
7. The 90 ° non-reciprocal phase shifter of claim 1, wherein the ends of the first ferrite and the second ferrite distal from the common baffle abut the sidewalls of the rectangular waveguide cavity.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111499683.6A CN114421104B (en) | 2021-12-09 | 2021-12-09 | 90-degree nonreciprocal phase shifter |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202111499683.6A CN114421104B (en) | 2021-12-09 | 2021-12-09 | 90-degree nonreciprocal phase shifter |
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| CN114421104A CN114421104A (en) | 2022-04-29 |
| CN114421104B true CN114421104B (en) | 2023-05-05 |
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Citations (3)
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| CN205723883U (en) * | 2016-06-22 | 2016-11-23 | 南京国睿微波器件有限公司 | A kind of microwave ferrite linear polarization nonreciprocal phase shifter |
| CN107706491A (en) * | 2017-08-17 | 2018-02-16 | 西北核技术研究所 | A kind of compact four ports waveguide differential phase shift circulator |
| CN208674330U (en) * | 2018-08-03 | 2019-03-29 | 中国航空工业集团公司雷华电子技术研究所 | A kind of latching Dual Mode Reciprocal Ferrite Phase Shifter |
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| US6407646B1 (en) * | 2000-03-23 | 2002-06-18 | Ray M. Johnson | Distributed three port stacked waveguide circulator |
| US20020044714A1 (en) * | 2000-10-16 | 2002-04-18 | Henry Hung | Multiple wavelength Michelson interferometer switch |
| JP4144606B2 (en) * | 2005-05-18 | 2008-09-03 | 三菱電機株式会社 | Ferrite phase shifter |
| CN202444044U (en) * | 2012-01-19 | 2012-09-19 | 成都信息工程学院 | Waveguide circulator |
| CN202534762U (en) * | 2012-04-28 | 2012-11-14 | 成都泰格微波技术股份有限公司 | C-band high-power circulator |
| CN107331966B (en) * | 2017-07-21 | 2020-05-01 | 电子科技大学 | High-power second-order and N-order Butler matrix based on rectangular waveguide |
| CN107623156A (en) * | 2017-09-07 | 2018-01-23 | 北京无线电测量研究所 | A kind of bicyclic nonreciprocal ferrite phase shifter of plated film |
| CN112448107A (en) * | 2020-12-02 | 2021-03-05 | 西安电子工程研究所 | 90-degree electric control ferrite phase shifter |
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2021
- 2021-12-09 CN CN202111499683.6A patent/CN114421104B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN205723883U (en) * | 2016-06-22 | 2016-11-23 | 南京国睿微波器件有限公司 | A kind of microwave ferrite linear polarization nonreciprocal phase shifter |
| CN107706491A (en) * | 2017-08-17 | 2018-02-16 | 西北核技术研究所 | A kind of compact four ports waveguide differential phase shift circulator |
| CN208674330U (en) * | 2018-08-03 | 2019-03-29 | 中国航空工业集团公司雷华电子技术研究所 | A kind of latching Dual Mode Reciprocal Ferrite Phase Shifter |
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| CN114421104A (en) | 2022-04-29 |
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