CN105305093A - Ferrite lock type variable polarizer - Google Patents
Ferrite lock type variable polarizer Download PDFInfo
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- CN105305093A CN105305093A CN201510817324.9A CN201510817324A CN105305093A CN 105305093 A CN105305093 A CN 105305093A CN 201510817324 A CN201510817324 A CN 201510817324A CN 105305093 A CN105305093 A CN 105305093A
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- ferrite
- magnetic circuit
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- polarization
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Abstract
The invention relates to a ferrite lock type variable polarizer. The ferrite lock type variable polarizer comprises an outer magnetic circuit (1), a plated film ferrite circular rod (2) and coils (3). The outer magnetic circuit (1) is tightly and cooperatively pressed against the plated film ferrite circular rod (2) high in squareness ratio. The two pairs of coils (3) having the same number of turns and the same resistance are wound around four arc portions of the outer magnetic circuit (1). The tolerances of the inner circle and the outer circle of the outer magnetic circuit (1) are smaller than 0.02 millimeters. The reasonable lock type outer magnetic circuit is designed by means of the rectangular magnetic property of ferrite material. Through adoption of a special-purpose polarization variable excitation mode, the coils on the magnetic circuit are driven by pulse currents, and the polarization variable performance is maintained even if pulse currents are cut off. The power consumption of a system is greatly reduced.
Description
Technical field
The present invention relates to a kind of Polarization changer, particularly a kind of ferrite locking-type Polarization changer for the agile radar technology that polarizes.
Background technology
Modern phased array radar technology, except will measuring the position of multiple target, speed simultaneously, obtains target polarization information and becomes more and more important.If antenna can receive and dispatch multiple polarization within shorter change-over time, can reach jamproof object on the one hand, can also obtain more target polarization information on the other hand, effectively be identified target, polarization that Here it is is prompt becomes function.At early eighties U.S. Westinghouse Electrical Corp. just for the main force of air force fighter-bomber is developed into polarization agile radar (EAR), be equipped on B-1B and B52 fighter-bomber, the function such as automatic terrain following and low flight obstacle avoidance can be completed.EAR antenna array employs thousands of phase-shifting units, employing be Ferrite Variable Polarization phase shifter, level, vertical, circular polarization three kinds polarization can be obtained.China there is no this type of phase shifter at present and comes into operation, and along with the development of science and techniques of defence, the application of polarization agile radar is imperative.
Ferrite variable polarization phase shifter, after incident left (right side) circularly polarised wave, can export circularly polarised wave or vertical, horizontal linear polarization ripple as requested, and can control the phase shift of output polarization ripple; Otherwise, when receiving terminal inputs known circularly polarised wave or vertical, horizontal linear polarization ripple, left (right side) circularly polarised wave can be exported from incidence end, and produce the phase shift of needs.By increasing the polarization phase shift that a fixing circular polarizer also can realize line polarization wave.
The phase shift mechanism of this ferrite variable polarization phase shifter be conventional longitudinal magnetization to the Faraday rotation effect of circularly polarised wave, and its to realize the prompt key become of polarization be polarization-agile technology.Polarization-agile technology normally adopted the method continuing to add electric control to the coil on magnetic circuit in the past, once cut-off current, polarization performance will disappear, and this polarization-agile technology is non-locking-type.And Large Phased Array Radar certainly will bring great system power dissipation to continue to power up to every phase shifter, this polarization mode continuing to power up can cause the sectional dimension of device bigger than normal simultaneously, causes the appearance of the graing lobe on front and affects overall performance.
Summary of the invention
In order to overcome the above problems the invention provides a kind of energy-conservation, stability strong, the kind ferrite locking-type Polarization changer that volume is little.With the square magnetic characteristic of Ferrite Material, enclosed type external magnetic circuit reasonable in design, take special polarization excitation mode, drive the coil on magnetic circuit with pulse current, pulse current turns off, and polarization performance continues to keep, complete ferrite locking-type polarization to control, namely realize locking-type Polarization changer.
For achieving the above object, the invention provides following technical scheme: a kind of ferrite locking-type Polarization changer, it is characterized in that: comprise external magnetic circuit, plated film ferrite pole, coil, the plated film ferrite pole of high squareness ratio closely cooperates and is suppressed with external magnetic circuit, external magnetic circuit four circular arcs are wound with the coil of two groups of same number of turns same resistance respectively, and coil forms four magnetic pole field patterns according to end to end method line.Energisation mode adjusts pulse width control polarized state for adopting positive and negative magnetization state, with negative saturated mode for reset state, being chosen the state of best horizontal linear polarization, circular polarization, vertical line polarization by the pulsewidth that set is different, is transmitting-receiving reciprocity according to the known this gyromagnetic variable polarization effect of ferritic characteristics of non-reciprocity.
Described external magnetic circuit inside and outside circle tolerance is less than 2.
The present invention realizes the method for locking-type Polarization changer, outside the ferrite waveguide to plated film, add that the soft magnetism of accessory processing or square magnetic ferrites materials (being preferably the lithium ferrite material of high magnetic moment) form enclosed type magnetic circuit, by coiling on magnetic circuit, and coil is adopted to the control mode of similar circular polarization phase shifter, change the size of four magnetic pole field intensity in ferrite waveguide and then change the power of ferrite waveguide gyromagnetic variable polarization effect, the method that locking-type controls to realize locking-type Polarization changer is carried out to the polarized state that device exports.
The circuit drive method of segmentation amplitude, segmentation pulsewidth, flux feedback is adopted to control to coil in general.
On this device external magnetic circuit, winding turns is less, coil is also short, and the gap of coil and sample is larger, therefore controlling it should be larger relative to circular polarization phase shifter resetting current, set current without the need to equidistantly splitting pulsewidth, and should provide several more accurate pulsewidth to make it to realize purer circular polarization and linear polarization.
Compared with prior art, its remarkable advantage is in the present invention: the present invention adopts square magnetic material, utilizes enclosed type external magnetic circuit, achieve the design of locking-type Polarization changer.Its sectional dimension has had remarkable improvement than the non-locking-type Polarization changer continuing to power up, and can not exceed the magnetic path width of phase shifter, therefore use on front and can not produce graing lobe, and locking-type controls the power consumption also greatly reducing system.
External magnetic circuit coordinates more closely with ferrite, the circularly polarised wave that the gyromagnetic variable polarization effect produced by reasonable this locking-type of segmentation Polarization changer of aaset bit pulsewidth can make input circularly polarised wave change ovality into be less than 1.0dB, or orthogonal isolation is greater than the line polarization wave of 25dB.
Accompanying drawing explanation
Fig. 1 is ferrite locking-type Polarization changer sectional view of the present invention.
Fig. 2 is the connection type of ferrite locking-type Polarization changer magnetic circuit coil of the present invention.
Fig. 3 is one of ferrite locking-type Polarization changer of the present invention application schematic diagram.
Fig. 4 is two schematic diagrames of ferrite locking-type Polarization changer of the present invention application.
Fig. 5 is three schematic diagrames of ferrite locking-type Polarization changer of the present invention application.
Embodiment
Below in conjunction with accompanying drawing, the present invention will be further described in detail.
As shown in Figure 1, 2, the invention provides a kind of ferrite locking-type Polarization changer, comprise external magnetic circuit 1, plated film ferrite pole 2, coil 3, the plated film ferrite pole 2 of high squareness ratio closely cooperates and is suppressed with external magnetic circuit 1, external magnetic circuit 1 four circular arcs are wound with the coil 3 of two groups of same number of turns same resistance respectively, and coil forms four magnetic pole field patterns according to end to end method line.
First selecting suitable ferrite waveguide size to be diameter 7mm in 3cm frequency range typical sizes, for possessing good locking-type characteristic, the lithium ferrite material that square magnetic property is good should be selected; Be that its external magnetic circuit prepares suitable mould according to the size of waveguide diameter, adopt the lithium ferrite material of high magnetic moment to fire external magnetic circuit; After external magnetic circuit sinter molding, the technique mill of inside and outside circle mill is adopted to process the inner circle size meeting tolerance, as+0.01 ~+0.02mm; Coiling is carried out after all corner angle of rounding external magnetic circuit; Method for winding is enclose left and right with doublet cord around 10 on each circular arc, and about wire diameter 0.3mm, adopts end to end winding mode, forms differential concatenation loop (as Fig. 2).
Energisation mode is similar with the energisation mode of ferrite circular polarization phase shifter, and in figure (2), 4-5 direction powers up to saturated rear formation reset mode, then 6-5 direction is added to the pulse of an adjustable-width, makes Polarization changer be fixed on a SM set mode.Regulate the width of set pulse can obtain different SM set mode, corresponding is different output polarization characteristics with it.On microwave property, during given polarization characteristic input, different SM set mode is tested respectively to the output characteristic of locking-type Polarization changer like this, can determine that several fixing set pulse obtains the polarization needed and exports, realize the regulation performance of locking-type Polarization changer.
One of application (as shown in Figure 3): the reciprocity variable polarization phase shifter of circularly polarised wave input, input circularly polarised wave, exports variable polarization after its phase shift.Wherein adaptation 7 realizes mating of input empty waveguide and plated film ferrite jayrator; Circular polarization jayrator 9 realizes the phase shift function of this device; Locking-type Polarization changer 10 of the present invention can realize the polarizing control function of this device; Plated film ferrite jayrator is realized to the adaptation 11 of circle/square wave guide and exports mating of empty waveguide.
Two (as shown in Figure 4) of application: reciprocity locking-type Polarization changer, variable polarization output can be carried out to incident ray polarized wave.Wherein adaptation 7 realizes mating of input empty waveguide and plated film ferrite jayrator; The adaptation 11 of locking-type Polarization changer 10 of the present invention to circle/square wave guide realizes plated film ferrite jayrator and exports mating of empty waveguide;
Three (as shown in Figure 5) of application: the reciprocity variable polarization phase shifter of linear polarization input, input line polarized wave, is first converted into circularly polarised wave, then phase shift variable polarization export.Wherein adaptation 7 realizes mating of input empty waveguide and plated film ferrite jayrator; The line polarization wave of incidence is converted to circularly polarised wave by circular polarizer 8; Circular polarization jayrator 9 realizes the phase shift function of this device; The adaptation 11 of locking-type Polarization changer of the present invention 10 pairs of circular waveguides realizes plated film ferrite jayrator and exports mating of empty waveguide.
The several application example of Fig. 3 ~ Fig. 5 is all be assemblied on the ferrite bar of a plated film, and difference according to demand refills devices such as joining circular polarization jayrator, circular polarizer.
The foregoing is only the preferred embodiments of the present invention, be not restricted to the present invention, for a person skilled in the art, the present invention can have various modifications and variations.Within the spirit and principles in the present invention all, any amendment done, equivalent replacement, improvement etc., all should be included within right of the present invention.
Claims (6)
1. a ferrite locking-type Polarization changer, it is characterized in that: comprise external magnetic circuit (1), plated film ferrite pole (2), coil (3), the plated film ferrite pole (2) of high squareness ratio closely cooperates and is suppressed with external magnetic circuit (1), external magnetic circuit (1) four circular arc is wound with the coil (3) of two groups of same number of turns same resistance respectively, and coil forms four magnetic pole field patterns according to end to end method line.
2. a kind of ferrite locking-type Polarization changer according to claim 1, is characterized in that: described external magnetic circuit (1) inside and outside circle tolerance is less than 2.
3. a kind of ferrite locking-type Polarization changer according to claim 1 and 2, is characterized in that: described external magnetic circuit (1) adopts soft magnetism or square magnetic ferrites materials.
4. a kind of ferrite locking-type Polarization changer according to claim 3, is characterized in that: described square magnetic ferrites materials is the lithium ferrite material of high magnetic moment.
5. a kind of ferrite locking-type Polarization changer according to claim 1 and 2, is characterized in that: described external magnetic circuit (1) inner circle is of a size of+0.01 ~+0.02mm.
6. a kind of ferrite locking-type Polarization changer according to claim 1, is characterized in that: described each circular arc is wound with 10 turn coil (3), and the wire diameter of coil (3) is 0.3mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510817324.9A CN105305093A (en) | 2015-11-23 | 2015-11-23 | Ferrite lock type variable polarizer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510817324.9A CN105305093A (en) | 2015-11-23 | 2015-11-23 | Ferrite lock type variable polarizer |
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| Publication Number | Publication Date |
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| CN105305093A true CN105305093A (en) | 2016-02-03 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510817324.9A Pending CN105305093A (en) | 2015-11-23 | 2015-11-23 | Ferrite lock type variable polarizer |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107994346A (en) * | 2017-11-15 | 2018-05-04 | 北京无线电测量研究所 | A kind of communication in moving full-polarizer and microwave signal process method |
| CN112216937A (en) * | 2020-12-02 | 2021-01-12 | 中国电子科技集团公司第九研究所 | Faraday rotary switch |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3698008A (en) * | 1971-04-22 | 1972-10-10 | North American Rockwell | Latchable, polarization-agile reciprocal phase shifter |
| CN104377403A (en) * | 2014-11-14 | 2015-02-25 | 南京国睿微波器件有限公司 | X wave band ferrite rotating field phase shifter |
| CN205122781U (en) * | 2015-11-23 | 2016-03-30 | 南京国睿微波器件有限公司 | Ferrite locking -type pole change spinning disk atomiser |
-
2015
- 2015-11-23 CN CN201510817324.9A patent/CN105305093A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3698008A (en) * | 1971-04-22 | 1972-10-10 | North American Rockwell | Latchable, polarization-agile reciprocal phase shifter |
| CN104377403A (en) * | 2014-11-14 | 2015-02-25 | 南京国睿微波器件有限公司 | X wave band ferrite rotating field phase shifter |
| CN205122781U (en) * | 2015-11-23 | 2016-03-30 | 南京国睿微波器件有限公司 | Ferrite locking -type pole change spinning disk atomiser |
Non-Patent Citations (2)
| Title |
|---|
| 徐燕生: ""小型微波铁氧体锁式变极化器"", 《电子学报》 * |
| 胡岚等: ""铁氧体锁式可变极化移相器的设计和研究"", 《微波学报》 * |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107994346A (en) * | 2017-11-15 | 2018-05-04 | 北京无线电测量研究所 | A kind of communication in moving full-polarizer and microwave signal process method |
| CN107994346B (en) * | 2017-11-15 | 2020-03-27 | 北京无线电测量研究所 | All-polarization device for communication in motion and microwave signal processing method |
| CN112216937A (en) * | 2020-12-02 | 2021-01-12 | 中国电子科技集团公司第九研究所 | Faraday rotary switch |
| CN112216937B (en) * | 2020-12-02 | 2021-02-19 | 中国电子科技集团公司第九研究所 | Faraday rotary switch |
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Application publication date: 20160203 |