CN105024115A - Microwave phase shifter - Google Patents
Microwave phase shifter Download PDFInfo
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- CN105024115A CN105024115A CN201510430504.1A CN201510430504A CN105024115A CN 105024115 A CN105024115 A CN 105024115A CN 201510430504 A CN201510430504 A CN 201510430504A CN 105024115 A CN105024115 A CN 105024115A
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Abstract
The invention provides a microwave phase shifter. The microwave phase shifter comprises a first medium sheet, a second medium sheet, a metal sheet, ferrites and a waveguide. The first medium sheet, the second medium sheet and the metal sheet are successively limited and are bonded and fixed through a conductive adhesive. A groove is formed in the surface of the second medium sheet in a dug manner. A microstrip line is pasted to the surface of the first medium sheet. Nematic liquid crystals are injected into a cavity formed by the groove and the first medium sheet. The outer surface of the first medium sheet and the outer surface of the second medium sheet are respectively provided with at least two layers of ferrites, and the ferrites are internally provided with excitation leads. The first medium sheet, the second medium sheet, the metal sheet and the ferrites are respectively arranged in an inner cavity of the waveguide. Two ends of the waveguide are respectively provided with first matching mediums and second matching mediums. Two ends of each of the first medium sheet and the second medium sheet are in contact with the first matching mediums, and two ends of each ferrite are in contact with the second matching medium, wherein the dielectric constant of the first matching medium is larger than that of the second matching medium. The microwave phase shifter is capable of realizing phase shifting in an ultra-wideband microwave frequency range.
Description
Technical field
The present invention relates to microwave device technology field, particularly relate to a kind of microwave phase shifter.
Background technology
Phase shifter is a kind of device regulated the phase place of ripple, all has a wide range of applications at radar, missile attitude control, accelerator, communication and instrument field.Current ferrite device is widely used in various radar system, and wherein waveguide class Microwave Iron Oxide Elements occupy half of the country.Inactive phased array radar and submatrix Connectors for Active Phased Array Radar system all need to use a large amount of this kind of devices.Waveguide class ferrite device can realize the control of amplitude or phase place in antenna feeder to the microwave signal passed through, but must be realized mating of ferrite waveguide and empty waveguide by certain medium adaptation.Along with the development of Radar Technology, wideband operation has become the trend of development, and waveguide class Microwave Iron Oxide Elements consistent since the ordinary matches mode that adopts become the bottleneck of influential system bandwidth gradually, cause the problem existed in quality factor, tuning ratio, tuned speed, the linearity etc. more or less.
Summary of the invention
The technical problem that the present invention mainly solves is to provide a kind of microwave phase shifter, can realize phase shift under ultra-wideband microwave frequency range.
For solving the problems of the technologies described above, the technical scheme that the present invention adopts is: provide a kind of microwave phase shifter, comprise first medium sheet, second medium sheet, sheet metal, ferrite and waveguide, described first medium sheet, second medium sheet and sheet metal are stacked gradually and are adhesively fixed by conducting resinl, the surface of the adjacent described first medium sheet of described second medium sheet digs fluted, the corresponding described groove in the surface of the adjacent described second medium sheet of described first medium sheet has been sticked microstrip line, nematic crystal is injected with in the cavity that described groove and described first medium sheet surround, the outer surface of described first medium sheet and the outer surface of described sheet metal are respectively equipped with at least two-layer ferrite successively, excitation wire is equipped with in described ferrite, described first medium sheet, second medium sheet, sheet metal, ferrite is all arranged in the inner chamber of described waveguide, the two ends of described waveguide are respectively equipped with the first matched media and the second matched media, the two ends of described first medium sheet and described second medium sheet contact with described first matched media, described ferritic two ends contact with described second matched media, wherein, the dielectric constant of described first matched media is greater than the dielectric constant of described second matched media.
Preferably, described first medium sheet and described second medium sheet are potsherd.
Preferably, the material of described waveguide is copper.
Be different from the situation of prior art, the invention has the beneficial effects as follows: utilize nematic crystal when not biasing and biasing, the dielectric anisotropy change produced realizes the object of phase shift, thus phase shift can be realized under ultra-wideband microwave frequency range, compare traditional phase shifter, have that operating frequency is high, operating voltage is lower, insert consumption low, miniaturized, cheap, produce rate of finished products advantages of higher in batches.
Accompanying drawing explanation
Fig. 1 is the structural representation of embodiment of the present invention phase shifter.
Fig. 2 is the structural representation of the first medium sheet of embodiment of the present invention phase shifter, second medium sheet and sheet metal.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, be clearly and completely described the technical scheme in the embodiment of the present invention, obviously, described embodiment is only a part of embodiment of the present invention, instead of whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art, not making the every other embodiment obtained under creative work prerequisite, belong to the scope of protection of the invention.
In the lump see Fig. 1 and Fig. 2, the microwave phase shifter of the present embodiment comprises first medium sheet 1, second medium sheet 2, sheet metal 3, ferrite 4 and waveguide 5.
Wherein, first medium sheet 1, second medium sheet 2 and sheet metal 3 are stacked gradually and are adhesively fixed by conducting resinl, second medium sheet 2 adjacent first medium sheet 1 surface digs fluted 21, surperficial respective slot 21 place of first medium sheet 1 adjacent second medium sheet 2 has been sticked microstrip line 11, nematic crystal is injected with in the cavity that groove 21 and first medium sheet 1 surround, the outer surface of first medium sheet 1 and the outer surface of sheet metal 3 are respectively equipped with at least two-layer ferrite 4 successively, excitation wire is equipped with in ferrite 4, first medium sheet 1, second medium sheet 2, sheet metal 3, ferrite 4 is all arranged in the inner chamber of waveguide 5, the two ends of waveguide 5 are respectively equipped with the first matched media 6 and the second matched media 7, the two ends of first medium sheet 1 and second medium sheet 2 contact with the first matched media 6, the two ends of ferrite 4 contact with the second matched media 7, wherein, the dielectric constant of the first matched media 6 is greater than the dielectric constant of the second matched media 7.
During microwave phase shifter work, excitation wire connects drive circuit, and when an electric current passes through it, produce cross magnetization field, the magnetic line of force forms loop in ferrite 4.When radio-frequency field is by phase shift section, owing to there being the existence of positive and negative circularly polarised wave in ferrite 4, the magnetic permeability of positive and negative circularly polarised wave is different, thus produces differential phase shift.Microwave phase shifter works under locking-type state, and it can be operated in the arbitrary state between positive and negative magnetization state.Operating conditions controls to have been come by drive circuit.Meanwhile, owing to have employed nematic crystal as electrooptical material, utilize nematic crystal when not biasing and biasing, the dielectric anisotropy change of generation can realize the object of phase shift.
In the present embodiment, first medium sheet 1 and second medium sheet 2 are potsherd, and the material of waveguide 5 is copper.
By the way, the microwave phase shifter of the embodiment of the present invention utilizes nematic crystal when not biasing and biasing, the dielectric anisotropy change produced realizes the object of phase shift, thus phase shift can be realized under ultra-wideband microwave frequency range, compare traditional phase shifter, have that operating frequency is high, operating voltage is lower, insert consumption low, miniaturized, cheap, produce rate of finished products advantages of higher in batches.
The foregoing is only embodiments of the invention; not thereby the scope of the claims of the present invention is limited; every utilize specification of the present invention and accompanying drawing content to do equivalent structure or equivalent flow process conversion; or be directly or indirectly used in other relevant technical fields, be all in like manner included in scope of patent protection of the present invention.
Claims (3)
1. a microwave phase shifter, it is characterized in that, comprise first medium sheet, second medium sheet, sheet metal, ferrite and waveguide, described first medium sheet, second medium sheet and sheet metal are stacked gradually and are adhesively fixed by conducting resinl, the surface of the adjacent described first medium sheet of described second medium sheet digs fluted, the corresponding described groove in the surface of the adjacent described second medium sheet of described first medium sheet has been sticked microstrip line, nematic crystal is injected with in the cavity that described groove and described first medium sheet surround, the outer surface of described first medium sheet and the outer surface of described sheet metal are respectively equipped with at least two-layer ferrite successively, excitation wire is equipped with in described ferrite, described first medium sheet, second medium sheet, sheet metal, ferrite is all arranged in the inner chamber of described waveguide, the two ends of described waveguide are respectively equipped with the first matched media and the second matched media, the two ends of described first medium sheet and described second medium sheet contact with described first matched media, described ferritic two ends contact with described second matched media, wherein, the dielectric constant of described first matched media is greater than the dielectric constant of described second matched media.
2. microwave phase shifter according to claim 1, is characterized in that, described first medium sheet and described second medium sheet are potsherd.
3. microwave phase shifter according to claim 1, is characterized in that, the material of described waveguide is copper.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510430504.1A CN105024115A (en) | 2015-07-21 | 2015-07-21 | Microwave phase shifter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510430504.1A CN105024115A (en) | 2015-07-21 | 2015-07-21 | Microwave phase shifter |
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| Publication Number | Publication Date |
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| CN105024115A true CN105024115A (en) | 2015-11-04 |
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| CN201510430504.1A Pending CN105024115A (en) | 2015-07-21 | 2015-07-21 | Microwave phase shifter |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108181745A (en) * | 2018-02-08 | 2018-06-19 | 京东方科技集团股份有限公司 | A kind of liquid crystal phase shifter, phase-moving method and preparation method thereof |
| CN108490706A (en) * | 2018-04-13 | 2018-09-04 | 京东方科技集团股份有限公司 | Liquid crystal phase shifter and its manufacturing method, liquid crystal antenna and electronic device |
| CN108598631A (en) * | 2018-04-19 | 2018-09-28 | 合肥工业大学 | A kind of reflective dual-layered liquid crystal phase-shifting unit based on patterned Graphene electrodes |
| CN111416191A (en) * | 2020-03-31 | 2020-07-14 | 苏治国 | Preparation method of broadband phase-adjustable phase shifter based on variable dielectric constant substrate |
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| US5451567A (en) * | 1994-03-30 | 1995-09-19 | Das; Satyendranath | High power ferroelectric RF phase shifter |
| WO2011036243A1 (en) * | 2009-09-25 | 2011-03-31 | Technische Universität Darmstadt | Phase shifter for high-frequency signals |
| US20140022029A1 (en) * | 2011-11-14 | 2014-01-23 | Anatoliy Volodymyrovych GLUSHCHENKO | Nanoparticle-enhanced liquid crystal radio frequency phase shifter |
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| CN104466307A (en) * | 2014-11-24 | 2015-03-25 | 电子科技大学 | Phase shifter |
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2015
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| US5451567A (en) * | 1994-03-30 | 1995-09-19 | Das; Satyendranath | High power ferroelectric RF phase shifter |
| WO2011036243A1 (en) * | 2009-09-25 | 2011-03-31 | Technische Universität Darmstadt | Phase shifter for high-frequency signals |
| US20140022029A1 (en) * | 2011-11-14 | 2014-01-23 | Anatoliy Volodymyrovych GLUSHCHENKO | Nanoparticle-enhanced liquid crystal radio frequency phase shifter |
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Non-Patent Citations (2)
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| DI JIANG等: "Compact phase shifter based on highly anisotropic liquid crystals for microwave frequency", 《ELECTRONIC LETTERS》 * |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108181745A (en) * | 2018-02-08 | 2018-06-19 | 京东方科技集团股份有限公司 | A kind of liquid crystal phase shifter, phase-moving method and preparation method thereof |
| CN108181745B (en) * | 2018-02-08 | 2020-08-25 | 京东方科技集团股份有限公司 | Liquid crystal phase shifter, phase shifting method and manufacturing method thereof |
| US10866466B2 (en) | 2018-02-08 | 2020-12-15 | Boe Technology Group Co., Ltd. | Liquid crystal phase shifter, phase shifting method, and method of fabricating the liquid crystal phase shifter |
| CN108490706A (en) * | 2018-04-13 | 2018-09-04 | 京东方科技集团股份有限公司 | Liquid crystal phase shifter and its manufacturing method, liquid crystal antenna and electronic device |
| CN108490706B (en) * | 2018-04-13 | 2024-04-02 | 京东方科技集团股份有限公司 | Liquid crystal phase shifter, manufacturing method thereof, liquid crystal antenna and electronic device |
| CN108598631A (en) * | 2018-04-19 | 2018-09-28 | 合肥工业大学 | A kind of reflective dual-layered liquid crystal phase-shifting unit based on patterned Graphene electrodes |
| CN108598631B (en) * | 2018-04-19 | 2020-10-23 | 合肥工业大学 | Reflective double-layer liquid crystal phase-shifting unit based on patterned graphene electrode |
| CN111416191A (en) * | 2020-03-31 | 2020-07-14 | 苏治国 | Preparation method of broadband phase-adjustable phase shifter based on variable dielectric constant substrate |
| CN111416191B (en) * | 2020-03-31 | 2021-08-13 | 苏治国 | Preparation method of broadband phase-adjustable phase shifter based on variable dielectric constant substrate |
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Application publication date: 20151104 |
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