CN114256570B - C-band high-power ferrite rapid full polarizer - Google Patents
C-band high-power ferrite rapid full polarizer Download PDFInfo
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- CN114256570B CN114256570B CN202111524263.9A CN202111524263A CN114256570B CN 114256570 B CN114256570 B CN 114256570B CN 202111524263 A CN202111524263 A CN 202111524263A CN 114256570 B CN114256570 B CN 114256570B
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- ferrite
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01P—WAVEGUIDES; RESONATORS, LINES, OR OTHER DEVICES OF THE WAVEGUIDE TYPE
- H01P1/00—Auxiliary devices
- H01P1/165—Auxiliary devices for rotating the plane of polarisation
- H01P1/17—Auxiliary devices for rotating the plane of polarisation for producing a continuously rotating polarisation, e.g. circular polarisation
- H01P1/174—Auxiliary devices for rotating the plane of polarisation for producing a continuously rotating polarisation, e.g. circular polarisation using a magnetic element
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q15/00—Devices for reflection, refraction, diffraction or polarisation of waves radiated from an antenna, e.g. quasi-optical devices
- H01Q15/24—Polarising devices; Polarisation filters
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- Variable-Direction Aerials And Aerial Arrays (AREA)
Abstract
The invention discloses a C-band high-power ferrite rapid full polarizer, which comprises a square hollow magnetic circuit board, wherein a waveguide tube is arranged in the magnetic circuit board, a ferrite sheet is arranged on the inner wall of the waveguide tube, the ferrite sheet on the outer wall of the waveguide tube is recessed inwards, two ends of the waveguide tube are respectively connected with orthogonal mode couplers, four variable polarization section four magnetic poles are respectively arranged in the middle of four sides of the inner wall of one side of the magnetic circuit board, variable polarization section exciting coils are wound on the four magnetic poles, the variable polarization section exciting coils are connected with a polarization power supply after being connected in parallel in a staggered mode, four corners of the inner wall of one side of the magnetic circuit board are respectively provided with phase-shifting section four magnetic poles, phase-shifting section exciting coils are wound on the four magnetic poles, and the phase-shifting section exciting coils are connected with the phase power supply after being connected in parallel in a staggered mode. The C-band high-power ferrite rapid full polarizer provided by the invention can improve the polarization switching speed of the full polarizer and the bearing power of the full polarizer.
Description
Technical Field
The invention relates to a C-band high-power ferrite rapid full polarizer, and belongs to the technical field of radar polarization.
Background
Although the research on polarization information in radar echo starts in the fifties, no hot spot is formed, and in recent decades, with the development of threats such as stealth targets, electronic interference, classification and target identification, the utilization and research of the polarization information are brought to important positions and become a leading-edge technology of new technology development of radar.
There are many methods for realizing the application of the polarization-changing technology at present, and the ferrite polarization-changing technology has been paid attention to. In the 80-90S of the last century, the developed and designed single ferrite electric control variable polarizer is successfully applied to national 'long-range number' airborne precision measurement radar, vehicle-mounted target range precision measurement radar, X-band navigation radar, 8-millimeter low-elevation angle measurement radar and full-band (L, S, C and X) low-orbit satellite monopulse broadband ground information reconnaissance radar antenna feeder receiving branches, and multi-polarization receiving is converted into single-polarization output. The application of the polarization changing technology enhances the radar target detection and natural interference resistance. However, the development requirement of the polarization-varying technology of the modern polarization radar is full polarization operation (all variable polarization), which requires operation in various forms (various polarizations), various attitudes (different elliptical axis inclination angles) and different polarization rotation directions, and requires independent polarization variation for receiving and transmitting. Therefore, the new full-polarization-domain electric control polarization changing technology has very important significance undoubtedly on the research of the polarization changing problem of the existing polarization radar and the improvement of the actual combat capability of the radar.
The microwave ferrite electric control full polarization technology has wide application frequency range, the working frequency is 0.8-40 GHz (L, S, C, X, ku and Ka wave bands), and the microwave ferrite electric control full polarization technology provides better technical support for new technical development and application (anti-interference, electronic reconnaissance and the like) of modern radars in future.
How to solve the difficult problem that the polarization of the radar is fixed or single, improve the antijamming capability of the radar is the urgent problem faced at present, therefore, must be equipped with and changed the polarization (or all polarization) controlling device between feeder line system and aerial, make the radar work in many polarization modes, polarization agile radar once find a certain polarization is interfered by enemy, change the polarization mode work of the aerial rapidly, achieve the goal of inhibiting various polarization interference, change polarization (or all polarization) antijamming technique have broad application prospects and very high popularization and application value, play a great role in the war of the complicated electromagnetic environment in the future.
The prior art polarizers suffer from technical drawbacks in terms of polarization switching speed and polarizer withstand power. In the aspect of polarization switching speed, the existing polarizer has low polarization switching speed which is 5-10 ms, and is difficult to meet the application in continuous tracking, interference resistance and other functions. In the aspect of power, the existing polarizer has low bearing power due to the structure and the like, the peak power is 500-600 kw, and the average power is 1kw, so that the polarizer is difficult to meet various applications in a high-power scene.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provide a C-band high-power ferrite rapid full polarizer, which can improve the polarization switching speed of the full polarizer and the bearing power of the full polarizer.
In order to solve the technical problems, the technical scheme adopted by the invention is as follows:
the utility model provides a quick complete polarizer of C wave band high power ferrite, includes square hollow magnetic circuit board, be provided with the waveguide pipe in the magnetic circuit board, the waveguide pipe inner wall is provided with the ferrite piece, the both ends of waveguide pipe even have the orthomode coupler respectively, the four sides middle part of magnetic circuit board one side inner wall is provided with the section four magnetic poles of becoming polarized respectively, the winding has the section excitation coil of becoming polarized on the four magnetic poles, it is connected with the polarization power supply to become the crisscross parallelly connected back of section excitation coil of polarized, the four corners department of magnetic circuit board one side inner wall is provided with the section four magnetic poles of shifting phase respectively, the winding has the section excitation coil of shifting phase on the second coil post, it is connected with the phase power supply to shift the crisscross parallelly connected back of section excitation coil of shifting phase.
Lie in on the waveguide pipe outer wall ferrite piece position is inside sunken, the depressed place the thickness of waveguide pipe is 0.5 0.1mm.
The waveguide tube is characterized in that a heat dissipation channel is formed in a concave position of the outer wall of the waveguide tube, the depth of the heat dissipation channel is 0.5 +/-0.1 mm, and a cooling fin or a water cooling device is arranged in the heat dissipation channel.
And conductive adhesive is uniformly filled between the ferrite sheet and the waveguide tube.
The waveguide tube is characterized in that first square connecting parts are arranged at two ends of the waveguide tube, a second square connecting part is arranged at the connecting end of the orthogonal mode coupler, and the waveguide tube is connected with the orthogonal mode coupler through the first square connecting parts and the second square connecting parts.
The ferrite sheet is made of yttrium gadolinium tin indium garnet.
The invention has the beneficial effects that: the invention provides a C-band high-power ferrite rapid full polarizer, which improves the magnetic conductivity, reduces the eddy current effect, reduces the lag time, improves the polarization conversion speed of the full polarizer and further improves the performance of a variable polarizer by designing a waveguide tube structure and designing the thickness of a waveguide tube in contact with four magnetic pole heads to be 0.5 +/-0.1 mm; the radiating fin devices or the water cooling devices are arranged on the four walls of the waveguide tube, so that the radiating performance of the device can be improved, and the bearing power of the full polarizer can be improved; conductive adhesive is uniformly filled between the ferrite sheet and the waveguide, so that the heat conduction characteristic of the full polarizer is improved, the heat dissipation is accelerated, and the bearing power of the full polarizer is improved.
Drawings
FIG. 1 is a schematic perspective view of a C-band high power ferrite fast full polarizer according to the present invention;
FIG. 2 is a schematic diagram of a transverse cross-sectional configuration of the polarizer location of FIG. 1;
FIG. 3 is a schematic diagram of a transverse cross-sectional structure of the differential phase shifter location of FIG. 1;
fig. 4 is a structural schematic diagram of a C-band high-power ferrite fast full polarizer of the present invention.
The reference numbers in the figures are as follows: 1-a magnetic circuit board; a 2-quadrature mode coupler; 3-a variable polarization section exciting coil; 4-a waveguide tube; a 5-ferrite sheet; 6-phase shift section exciting coil; 11-heat dissipation holes; 12-four magnetic poles of variable polarization sections; 13-phase shift section four magnetic poles.
Detailed Description
The present invention is further described with reference to the accompanying drawings, and the following examples are only for clearly illustrating the technical solutions of the present invention, and should not be taken as limiting the scope of the present invention.
As shown in figure 4, the invention discloses a C-band high-power ferrite rapid full polarizer, which comprises six parts, namely two orthogonal mode couplers, a variable polarizer (V), a phase shifter (phi), a polarization power supply, a phase shifting power supply and the like, wherein the variable polarizer (V) section has the function of completing variable polarization amplitude adjustment, the phase shifter (phi) section completes phase adjustment, and a four-magnetic-pole magnetization field is configured on a ferrite square waveguide or a circular waveguide to complete the full polarization function, and the structure of the ferrite rapid full polarizer is integrally designed and is compact. The invention utilizes the novel electric control device designed by the birefringence effect in the ferrite waveguide to control the magnitude of the external magnetization field of the ferrite segment, so that vertical polarized waves, horizontal polarized waves, left and right circularly polarized waves or any elliptically polarized waves can be transmitted in the waveguide tube (square waveguide or circular waveguide), and the novel electric control device can also be used as a rapid high-power polarization switch, any high-low power distributor, any high-low power synthesizer and the like.
The specific structure of the invention is shown in fig. 1 to 3, and comprises a square hollow magnetic circuit board 1, wherein the magnetic circuit board 1 is provided with a heat dissipation hole 11. A waveguide tube 4 is arranged in the magnetic circuit board 1, and the waveguide tube 4 is a square waveguide or a circular waveguide. In the present embodiment, the waveguide 4 is preferably a square waveguide. The inner wall of the waveguide 4 is provided with ferrite pieces 5.
The both ends of waveguide tube 4 even have orthogonal mode coupler 2 respectively, and the both ends of waveguide tube 4 are provided with first square connecting portion, and 2 link of orthogonal mode coupler is provided with the square connecting portion of second, connects through first square connecting portion and the square connecting portion of second between waveguide tube 4 and the orthogonal mode coupler 2.
Four sides of the inner wall of one side of the magnetic circuit board 1 are respectively provided with a variable polarization section four-magnetic pole 12, a variable polarization section exciting coil 3 is wound on the variable polarization section four-magnetic pole 12, the magnetic circuit board 1, the variable polarization section four-magnetic pole 12, the variable polarization section exciting coil 3, a waveguide tube 4 and a ferrite sheet 5 form a variable polarizer, and the variable polarization section exciting coil 3 is connected with a polarization power supply. Four corners of the inner wall of one side of the magnetic circuit board 1 are respectively provided with a phase-shifting section four-magnetic pole 13, the phase-shifting section four-magnetic pole 13 is wound with a phase-shifting section exciting coil 6, the magnetic circuit board 1, the phase-shifting section four-magnetic pole 13, the phase-shifting section exciting coil 6, the waveguide tube 4 and the ferrite sheet 5 form a differential phase shifter, and the phase-shifting section exciting coil 6 is connected with a phase power supply. When the high-frequency signal is input from the left end or the right end of the vertical polarized wave or the horizontal polarized wave, the right end or the left end can obtain full-polarization output.
The ferrite sheet 5 is made of yttrium gadolinium tin indium garnet type microwave ferrite materials with low loss, high figure of merit and high temperature stability, which is a key basis for realizing a full polarizer with high peak value and average power capacity, and under the high-power working environment, each state of the full polarizer works stably and the phase drift is very small.
The working principle of the C-band high-power ferrite rapid full polarizer is as follows: the working principle of a full polarizer is clearly described by using a polarization transformation matrix in the form of a polarization matrix
Let phi = phi x -φ y Obtaining a variable polarization matrix T expression without considering the dual-mode initial phase for the dual-mode phase difference, wherein T is a matrix, the receiving and transmitting polarization satisfies the reciprocity, and when the input polarized wave is in a horizontal polarized wave (1, 0) form, the output polarized wave is (cos alpha e) -jφ ,sinα) T Thus, a range of value ranges can be analyzed, and there is a domain of definition that (φ + π/2) ∈ (- π/2+ π/2, π/2+ π/2) = (0, π) when α is positively magnetized and (φ - π/2) ∈ (- π/2- π/2, π/2- π/2) = (- π, 0) when α is negatively magnetized. The above conditions are satisfied in the full polarization domain, and the full polarizer can realize full polarization transformation, i.e. input/output polarization is in a mirror relationship (or reciprocal relationship).
The variable polarization propagation constant (differential phase shift) calculation expression is as follows: the variable polarization propagation constant (differential phase shift) is analyzed by perturbation value to obtain a delta beta expression as
Wherein a, t and w are respectively square waveguide side length (cm), ferrite thickness (cm) and width (cm), k is off-diagonal component of tensor permeability of the ferrite material, and μ is permeability, the design parameters are determined by the formula, and after the working frequency is determined, the physical parameters of the ferrite material are saturation magnetization 4 π Ms =1050Gs (gauss), working line width Δ H =80oe (oersted), ferrite dielectric constant ε =14.5, and electric loss tangent factor tg σ =1.5 × 10 -4 Curie temperature T c =250 ℃, and μ =1 when saturated magnetization is operated, so
The width w =2.8cm, the thickness t =0.3cm, the side length a =3.7cm of the microwave square waveguide, and the parameters of the above formula are substituted into the formula delta beta to calculate, then the variable polarization difference phase shift delta phi = delta beta x 57 degree/cm (unit length difference phase shift), the variable polarization difference phase shift section requires delta phi =180 degrees, and the phase shift section length is long
It is an important basis for designing the polarization-variable phase-shifting section and the phase-shifting section.
The electrical performance indexes of the C-band high-power ferrite fast full polarizer designed by the invention are shown in the table 1:
TABLE 1C-band high-power ferrite full-polarizer electrical performance
According to the high-power ferrite full polarizer, the position, located on the ferrite sheet 5, on the outer wall of the waveguide tube 4 is inwards recessed, the thickness of the waveguide tube 4 at the recessed position is generally 0.5 +/-0.1 mm, and meanwhile, the rising edge and the falling edge of excitation magnetization pulse current are added with peaking pulse current, so that the value of polarization conversion speed when vertical polarization waves are converted into horizontal polarization waves is smaller than 1.5ms, and the high-power ferrite full polarizer is rapidly converted; a heat dissipation channel is formed at the sunken part of the outer wall of the waveguide tube 4, the depth of the heat dissipation channel is 0.5 +/-0.1 mm, and a heat dissipation sheet or a water cooling device is arranged in the heat dissipation channel, so that the heat dissipation performance of the device can be improved, and the bearing power of the full polarizer can be improved; conductive adhesive is uniformly filled between the ferrite sheet 5 and the waveguide tube 4, so that the heat conduction characteristic of the full polarizer is improved, the heat dissipation is accelerated, and the bearing power of the full polarizer is improved; in addition, the cooling device can be arranged outside the complete machine of the full polarizer, so that the power performance of the full polarizer is further improved.
The above description is only of the preferred embodiments of the present invention, and it should be noted that: it will be apparent to those skilled in the art that various modifications and adaptations can be made without departing from the principles of the invention, and such modifications and adaptations are intended to be within the scope of the invention.
Claims (7)
1. A C-band high-power ferrite fast full polarizer is characterized in that: including square hollow magnetic circuit board (1), be provided with wave guide (4) in magnetic circuit board (1), wave guide (4) inner wall is provided with ferrite piece (5), be located on wave guide (4) outer wall ferrite piece (5) position is inside sunken, the depressed place the thickness of wave guide (4) is 0.5 +/-0.1 mm, the both ends of wave guide (4) link respectively has orthogonal mode coupler (2), the four sides middle part of magnetic circuit board (1) one side inner wall is provided with variable polarization section four magnetic pole (12) respectively, the winding has variable polarization section exciting coil (3) on variable polarization section four magnetic pole (12), variable polarization section exciting coil (3) are crisscross parallelly connected back and are connected with the polarization power supply, the four corners department of magnetic circuit board (1) one side inner wall is provided with phase shift section four magnetic pole (13) respectively, phase shift section exciting coil (6) have on the phase shift section four magnetic pole (13), phase shift section exciting coil (6) are connected with the phase supply after crisscross parallelly connected.
2. The C-band high-power ferrite fast full polarizer of claim 1, characterized in that: the waveguide tube (4) is a square waveguide or a circular waveguide with a radiating fin device.
3. The C-band high power ferrite fast full polarizer of claim 1, characterized in that: the waveguide tube (4) outer wall sunken position forms heat dissipation channel, heat dissipation channel's degree of depth is 0.5 0.1mm, be provided with fin or water cooling plant in the heat dissipation channel.
4. The C-band high power ferrite fast full polarizer of claim 1, characterized in that: and conductive adhesive is uniformly filled between the ferrite sheet (5) and the waveguide tube (4).
5. The C-band high power ferrite fast full polarizer of claim 1, characterized in that: the magnetic circuit board (1) is provided with heat dissipation holes (11).
6. The C-band high-power ferrite fast full polarizer of claim 1, characterized in that: the waveguide tube coupling structure is characterized in that first square connecting portions are arranged at two ends of the waveguide tube (4), second square connecting portions are arranged at connecting ends of the orthogonal mode couplers (2), and the waveguide tube (4) is connected with the orthogonal mode couplers (2) through the first square connecting portions and the second square connecting portions.
7. The C-band high power ferrite fast full polarizer of claim 1, characterized in that: the ferrite sheet (5) is made of yttrium gadolinium tin indium garnet.
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203747044U (en) * | 2014-02-25 | 2014-07-30 | 南京国睿微波器件有限公司 | Microwave ferrite all-polarizer |
| 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 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| GB787522A (en) * | 1955-05-05 | 1957-12-11 | Marconi Wireless Telegraph Co | Improvements in or relating to frequency and phase shifters and modulators for very high frequency electro-magnetic waves |
| RU2249281C2 (en) * | 2003-05-22 | 2005-03-27 | Колесников Валерий Львович | Phased-array antenna element |
| 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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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203747044U (en) * | 2014-02-25 | 2014-07-30 | 南京国睿微波器件有限公司 | Microwave ferrite all-polarizer |
| 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 |
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