CN204271221U - A kind of ultra broadband dicyclo high power ferrite phase shifter - Google Patents
A kind of ultra broadband dicyclo high power ferrite phase shifter Download PDFInfo
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- CN204271221U CN204271221U CN201420684362.2U CN201420684362U CN204271221U CN 204271221 U CN204271221 U CN 204271221U CN 201420684362 U CN201420684362 U CN 201420684362U CN 204271221 U CN204271221 U CN 204271221U
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Abstract
A kind of ultra broadband dicyclo high power ferrite phase shifter, belongs to phase shifter field.This phase shifter comprises dieelctric sheet, ferrite and waveguide, and the upper surface of dieelctric sheet and lower surface are respectively equipped with 2 layers of ferrite successively, is installed with excitation wire in 2 layers of ferrite, is provided with one-level matched media and second degree matches medium in the inner chamber of described waveguide; The two ends of described dieelctric sheet are connected with second degree matches medium with one-level matched media all successively with described ferritic two ends.This phase shifter band bandwidth reaches 33%, loss is less than 1dB, standing-wave ratio is less than 1.5, phase shift is greater than 420 °, this dicyclo ferrite phase shifter is owing to have employed the version loading ceramic dielectric in the middle of two ferrite cores simultaneously, has high power ability to bear, inserts that consumption is low, bandwidth, processing criticizes the high advantage of the rate of manufacturing a finished product.
Description
Technical field
The utility model relates to phase shifter field, is specifically related to a kind of ultra broadband dicyclo high power ferrite phase shifter.
Background technology
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.
In order to adapt to the trend that ferrite phase shifter bandwidth of operation develops to broadband, the research carrying out ultra broadband phase shifter seems particularly important.
Prior art field, because the dielectric constant of Ferrite Material is about 15, conventional single-stage coupling usually can be selected the medium of dielectric constant about 6 to carry out partly filling waveguide and realize coupling, and usual single-stage coupling can cover the bandwidth of 8%.But along with the upgrading of radar bandwidth requirement, only adjust media size and do not change dielectric constant, even if do the even more multistage coupling of two-stage coupling, also the bandwidth (very eurypalynous bandwidth of a device can only accomplish 20% at most) of ferrite device cannot be increased considerably, multistage coupling also can bring device size to strengthen simultaneously, the problems such as poor reliability.
For this reason, inventors performed series of experiment research, adopt dielectric constant be 3.5 ~ 4.5 low loss dielectric material and dielectric constant be 7 ~ 11 dielectric material mates.By selecting the combination of the described dielectric constant of such one-level matched media and the dielectric constant of second degree matches medium, make band bandwidth >=33% of the phase shifter of technical solutions of the utility model.
Thisly low Jie's low loss dielectric material is taked to carry out the method for designing of Broadband Matching, its all band can be applied to, to greatly improve the coupling bandwidth of existing waveguide class ferrite device, the various field of bandwidth realization being particularly advantageous in various submatrix monostatic radar will have important application.
The beneficial effects of the utility model:
Technical solutions of the utility model by dielectric constant be 3.5 ~ 4.5 low loss dielectric material and dielectric constant be 7 ~ 11 dielectric material mates, obtain band bandwidth and reach 33%, loss is less than 1dB, standing-wave ratio is less than 1.5, phase shift is greater than 420 °, this dicyclo ferrite phase shifter is owing to have employed the version loading ceramic dielectric in the middle of two ferrite cores simultaneously, has high power ability to bear, inserts that consumption is low, bandwidth, processing criticizes the high advantage of the rate of manufacturing a finished product.
Utility model content
The dicyclo high power ferrite phase shifter that the purpose of this utility model is to provide a kind of ultrabroad band, loss is little, power capacity is large.
The purpose of this utility model can be achieved through the following technical solutions:
A kind of ultra broadband dicyclo high power ferrite phase shifter, this phase shifter comprises dieelctric sheet, ferrite and waveguide, the upper surface of dieelctric sheet and lower surface are respectively equipped with 2 layers of ferrite successively, excitation wire is installed with in 2 layers of ferrite, be provided with one-level matched media and second degree matches medium in the inner chamber of described waveguide, the two ends of described dieelctric sheet are connected with second degree matches medium with one-level matched media all successively with described ferritic two ends; Wherein the dielectric constant of one-level matched media is greater than the dielectric constant of second degree matches medium.
The dielectric constant of the one-level matched media described in technical solutions of the utility model is 7 ~ 11, and the dielectric constant of second degree matches medium is 3.5 ~ 4.5; The dielectric constant of preferred one-level matched media is 10.5 ~ 11, and the dielectric constant of second degree matches medium (6) is 3.5 ~ 4.
Wherein, one-level matched media preparation method according to Chinese Patent Application No. for: disclosed in the patent of 03129113.9, content prepares; The preparation method of second degree matches medium according to Chinese Patent Application No. for: disclosed in the patent of 201310723586.X, content prepares.
Waveguide described in technical solutions of the utility model is copper metal waveguide.
Ferrite described in technical solutions of the utility model is ferrite straight-flanked ring.
Dieelctric sheet (1) described in technical solutions of the utility model is ceramic dielectric sheet, and the dielectric constant of ceramic dielectric sheet is 6.7.
Ultra broadband dicyclo high power ferrite phase shifter described in technical solutions of the utility model, belongs to the nonreciprocal formula ferrite phase shifter of linear polarization.This phase shifter adopts a kind of novel two-stage matching process, adopt respectively dielectric constant be 3.5 ~ 4.5 low loss dielectric material and dielectric constant be 7 ~ 11 dielectric material mates, the mode of this coupling is different from conventional certain media and fills matching of waveguide, and second degree matches of the present invention is all that all dielectric fills matching of waveguide method.
Obtain ferrite by the two-stage matching process described in technical solutions of the utility model to load (dielectric constant is 14) and mate bandwidth more than 30% between waveguide with air waveguide.Ferrite Material described in technical solutions of the utility model adopts high squareness ratio high power garnet material, and the Ferrite Material index of this phase shifter final choice is as follows: 4 π M
s=650Gs, squareness ratio>=0.82, Δ H
k=10Oe, IL≤0.8.
Accompanying drawing explanation
Fig. 1 is ultra broadband dicyclo high power ferrite phase shifter structural representation.
1-dieelctric sheet, 2-ferrite, 3-waveguide, 4-excitation wire, 5-one-level matched media, 6-second degree matches medium.
Embodiment
Below in conjunction with embodiment, this utility model is described further, but protection range of the present utility model is not limited thereto:
As shown in Figure 1, a kind of ultra broadband dicyclo high power ferrite phase shifter, this phase shifter comprises dieelctric sheet (1), ferrite (2) and waveguide (3), the upper surface of dieelctric sheet (1) and lower surface are respectively equipped with 2 layers of ferrite (2) successively, excitation wire (4) is installed with in 2 layers of ferrite (2), be provided with one-level matched media (5) and second degree matches medium (6) in the inner chamber of described waveguide (3), wherein the dielectric constant of one-level matched media (5) is greater than the dielectric constant of second degree matches medium (6); The two ends of described dieelctric sheet (1) are connected with second degree matches medium (6) with one-level matched media (5) all successively with the two ends of described ferrite (2).The dielectric constant of one-level matched media (5) preferably described is further 10.9, and the dielectric constant of second degree matches medium (6) is 3.85.Waveguide (3) in technical solution of the present invention is copper metal waveguide; Described ferrite (2) is ferrite straight-flanked ring; Described dieelctric sheet (1) is ceramic dielectric sheet, and the dielectric constant of ceramic dielectric sheet is 6.7.
Under the state of 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 core.When radio-frequency field is by phase shift section, owing to there being the existence of positive and negative circularly polarised wave in ferrite, the magnetic permeability of positive and negative circularly polarised wave is different, thus produces differential phase shift.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.In matching section, the reflection that ferrite phase shifting section causes to empty waveguide because of change in the instantaneous impedance should be reduced as far as possible.Adopt two-stage quarter-wave medium coupling, realize coupling in >=33% frequency bandwidth.
5 of these technical solutions of the utility model phase shifters are tested, interpretation of result: band bandwidth >=33%, loss is less than 1dB, standing-wave ratio is less than 1.5, phase shift is greater than 420 °, this dicyclo ferrite phase shifter is owing to have employed the version loading ceramic dielectric in the middle of two ferrite cores simultaneously, has high power ability to bear, inserts that consumption is low, bandwidth, processing criticizes the high advantage of the rate of manufacturing a finished product.
In addition, the inventor of these technical solutions of the utility model has also carried out following contrast experiment, and concrete outcome is as shown in table 1:
Table 1 Different matching medium and various combination are on the impact of band bandwidth
| First order coupling dielectric constant | Second level coupling dielectric constant | Band bandwidth | |
| The coupling of technical solution of the present invention | ε r1＝10.9 | ε r2＝3.85 | 33％ |
| Contrast experiment combines (1) | ε r1＝10.9 | —— | 8％ |
| Contrast experiment combines (2) | ε r1＝3.85 | —— | 6％ |
| Prior art combination (1) | ε r1＝6 | —— | 8％ |
| Prior art combination (2) | ε r1＝6 | ε r2＝6 | 15％ |
| Prior art combination (3) | ε r1＝10.9 | ε r2＝6 | 20％ |
Claims (6)
1. a ultra broadband dicyclo high power ferrite phase shifter, this phase shifter comprises dieelctric sheet (1), ferrite (2) and waveguide (3), the upper surface of dieelctric sheet (1) and lower surface are respectively equipped with 2 layers of ferrite (2) successively, excitation wire (4) is installed with in 2 layers of ferrite (2), it is characterized in that: in the inner chamber of described waveguide (3), be provided with one-level matched media (5) and second degree matches medium (6), the two ends of described dieelctric sheet (1) are connected with second degree matches medium (6) with one-level matched media (5) all successively with the two ends of described ferrite (2), wherein the dielectric constant of one-level matched media (5) is greater than the dielectric constant of second degree matches medium (6).
2. ultra broadband dicyclo high power ferrite phase shifter according to claim 1, it is characterized in that: the dielectric constant of the one-level matched media (5) of described one-level matched media (5) is 7 ~ 11, the dielectric constant of second degree matches medium (6) is 3.5 ~ 4.5.
3. ultra broadband dicyclo high power ferrite phase shifter according to claim 2, it is characterized in that: the dielectric constant of described one-level matched media (5) is 10.5 ~ 11, the dielectric constant of second degree matches medium (6) is 3.5 ~ 4.
4. ultra broadband dicyclo high power ferrite phase shifter according to claim 1, is characterized in that: waveguide (3) is copper metal waveguide.
5. ultra broadband dicyclo high power ferrite phase shifter according to claim 1, is characterized in that: described ferrite (2) is ferrite straight-flanked ring.
6. ultra broadband dicyclo high power ferrite phase shifter according to claim 1, it is characterized in that: described dieelctric sheet (1) is ceramic dielectric sheet, the dielectric constant of ceramic dielectric sheet is 6.7.
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104393376A (en) * | 2014-11-14 | 2015-03-04 | 南京国睿微波器件有限公司 | Ultra-wide-band double-ring high-power ferrite phase shifter |
| CN105356015A (en) * | 2015-08-11 | 2016-02-24 | 西北核技术研究所 | Ferrite phase shifter used for X waveband |
| CN106972226A (en) * | 2017-05-31 | 2017-07-21 | 北京无线电测量研究所 | One kind miniaturization ferrite phase shifter |
| CN110783667A (en) * | 2019-10-31 | 2020-02-11 | 西北核技术研究院 | Remanence ferrite phase shifter with flat plate structure |
| CN113206361A (en) * | 2021-04-14 | 2021-08-03 | 北京无线电测量研究所 | Ferrite phase shifter |
-
2014
- 2014-11-14 CN CN201420684362.2U patent/CN204271221U/en active Active
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104393376A (en) * | 2014-11-14 | 2015-03-04 | 南京国睿微波器件有限公司 | Ultra-wide-band double-ring high-power ferrite phase shifter |
| CN105356015A (en) * | 2015-08-11 | 2016-02-24 | 西北核技术研究所 | Ferrite phase shifter used for X waveband |
| CN105356015B (en) * | 2015-08-11 | 2019-07-19 | 西北核技术研究所 | A kind of ferrite phase shifter for X-band |
| CN106972226A (en) * | 2017-05-31 | 2017-07-21 | 北京无线电测量研究所 | One kind miniaturization ferrite phase shifter |
| CN106972226B (en) * | 2017-05-31 | 2019-09-06 | 北京无线电测量研究所 | A kind of miniaturization ferrite phase shifter |
| CN110783667A (en) * | 2019-10-31 | 2020-02-11 | 西北核技术研究院 | Remanence ferrite phase shifter with flat plate structure |
| CN110783667B (en) * | 2019-10-31 | 2021-07-02 | 西北核技术研究院 | Remanence ferrite phase shifter with flat plate structure |
| CN113206361A (en) * | 2021-04-14 | 2021-08-03 | 北京无线电测量研究所 | Ferrite phase shifter |
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