CN108899637A - A kind of High-Power Microwave mould relay antenna based on diffraction periodic structure - Google Patents
A kind of High-Power Microwave mould relay antenna based on diffraction periodic structure Download PDFInfo
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- CN108899637A CN108899637A CN201810724194.8A CN201810724194A CN108899637A CN 108899637 A CN108899637 A CN 108899637A CN 201810724194 A CN201810724194 A CN 201810724194A CN 108899637 A CN108899637 A CN 108899637A
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- antenna
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- power microwave
- periodic structure
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/36—Structural form of radiating elements, e.g. cone, spiral, umbrella; Particular materials used therewith
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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
- H01Q15/242—Polarisation converters
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q21/00—Antenna arrays or systems
- H01Q21/06—Arrays of individually energised antenna units similarly polarised and spaced apart
- H01Q21/22—Antenna units of the array energised non-uniformly in amplitude or phase, e.g. tapered array or binomial array
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q21/00—Antenna arrays or systems
- H01Q21/29—Combinations of different interacting antenna units for giving a desired directional characteristic
- H01Q21/293—Combinations of different interacting antenna units for giving a desired directional characteristic one unit or more being an array of identical aerial elements
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- Aerials With Secondary Devices (AREA)
- Variable-Direction Aerials And Aerial Arrays (AREA)
Abstract
The invention discloses a kind of High-Power Microwave mould relay antenna based on diffraction periodic structure, belongs to microwave antenna art field.The antenna is made of Feed and antenna array, and Feed is a kind of mode exciter that can produce axisymmetry mode, and is fed using positive feedback mode to antenna array；Antenna array is that the transmission units periodic arrangement that multiple multilayer grooved sheet metals are formed by stacking up and down forms.The sheet metal that inventive antenna uses fluting to stitch compares conventional microstrip array antenna as radiation front, and power capacity greatly improves；Any axisymmetry mode can be converted into single linear polarization mode, have a wide range of applications field；Also have that high-gain, low section, structure be simple, the advantages such as easy to process simultaneously.
Description
Technical field
The invention belongs to microwave antenna art fields, and in particular to a kind of High-Power Microwave mould based on diffraction periodic structure
Relay antenna.
Background technique
High-Power Microwave refers to the pulse peak power of microwave in 100MW or more, and frequency is within the scope of 0.5~300GHz
Electromagnetic wave, due to its own outstanding feature and advantage, High-Power Microwave technology is quickly grown in recent years, national defence, it is civilian and
The fields such as scientific research all show huge prospect.High-power microwave source be core devices in High Power Microwave System it
One.Most high-power microwave sources have rotational symmetry export structure, therefore the mode that they are generated is mostly axisymmetry mode.
For example, exporting TEM coaxial mould using relativistic klystron of Coaxial extractor etc., and use axially extracted relativistic backward wave oscillator etc.
Export circular waveguide TM01Mould.Either TEM mould or TM01Mould, it is most of since open circles cone cell is presented in their far-field distribution
Energy does not focus in axial direction, is unfavorable for space and transmits at a distance.In practical applications, usually by TEM coaxial mould and circle
Waveguide TM01Mould is converted to circular waveguide TE11Mould or quasi- Gaussian mode.
For this problem, 2005, Zhang Yuwen et al. was in document " combined TM01-TE11The conversion of bending circular waveguide mode
(Zhang Yuwen, Shu Ting, Yuan is at defending the combined TM of for device research "01-TE11Bending circular waveguide mode converter study [J] light laser with
The particle beams, 2005,17 (1):A kind of TM is proposed in 117-120)01-TE11Bending circular waveguide mode converter, the mode converter
It by using combined structure, realizes output port and is overlapped with input port axis, but its transformation chain passes by length, size mistake
Greatly, it is unable to satisfy the requirement of entire Transmission system miniaturization.
2012, Xianrong Zhang et al. proposed a Vlasov Mode-transducing antenna for working in 220GHz
(ZhangX,Wang Q,ChengY,et al.Design ofa 220GHzVlasov(antenna)mode converter
[C].International Workshop on Microwave and Millimeter Wave Circuits and
System Technology.IEEE,2012:1-2), which can be by TM03Gaussian model subject to mould conversion,
190-250GHz range Internal conversion is greater than 80%, and antenna gain is up to 31.8dB.But above-mentioned Vlasov mode conversion
Aerial radiation direction changes with the variation of frequency, and larger with axis angle, is unable to satisfy microwave output still along axial direction
It is required that being of limited application.
2017, Zhao Jianing et al. was in a kind of patent " new ant algorithms converting antenna based on planar structure " (application number：
CN201710219562.9, date of application：2017.04.06 data of publication of application：2017.08.11 publication number：
CN107039781A propose that a kind of plane reflection array pattern converting antenna, the antenna can realize any tune of unit phase in)
Section, but the disadvantage is that there are feeds to block, and use medium as unit substrate, it is easy to happen dielectric loss and dielectric breakdown,
It is unfavorable for applying in High-Power Microwave.
In short, presently used mode converter exists on the whole, aperture efficiency is lower, volume is larger, is of limited application
The problems such as.
Summary of the invention
The invention proposes a kind of High-Power Microwave mould relay antenna based on diffraction periodic structure, the antenna have high increase
The advantages that benefit, low section, structure are simple, easy to process.
The technical solution adopted by the present invention is that：
A kind of High-Power Microwave mould relay antenna based on diffraction periodic structure, is made of Feed and antenna array.Institute
Stating Feed is one mode driver, which can produce axisymmetry mode, and using positive feedback mode pair
Antenna array is fed；The antenna array is that multiple transmission units periodic arrangements form, and the transmission units are multilayer
Slotted metal thin plate is formed by stacking up and down.
Further, gap can be the shapes such as cross, rectangle, ellipse on the slotted metal thin plate.
Further, the multilayer grooved sheet metal passes through support construction between layers and is provided with air layer interval.
Further, the antenna array can be round, rectangular, regular hexagon etc..
Using the twist-reflector principle of electric field, by adjusting the rotation angle and size of the slotted seam of each unit, to change
The polarization direction of incident electromagnetic wave, and then obtain through required field distribution after antenna array, it thus can be by feed spoke
The mode of injection is converted to the output mode of setting, realizes the mode conversion function of High-Power Microwave.Meanwhile being issued when feed
When electromagnetic wave is irradiated to each radiating element on antenna array from feed phase center, due to each unit on feed to antenna array
Distance it is different so that there are certain wave path-differences for each unit on antenna array, the received electromagnetic wave of each unit institute is caused to exist
Different spatial phase delays.It is rationally mended using theory of geometric optics by adjusting the dimensional parameters of the slotted seam of each unit
The phase difference caused by the incidence wave issued by feed reaches antenna array each unit spatial distance difference is repaid, is made through antenna
Plane wave front is presented in the electromagnetic wave that front gives off, and finally synthesizes the pen type wave beam of high-gain, and will be high according to the direction of setting
Power microwave directed radiation is gone out, and the directed radiation function of High-Power Microwave is completed.
The beneficial effects of the invention are as follows：
1, the High-Power Microwave mould relay antenna based on diffraction periodic structure has high-gain, low section, structure simple, easy
In advantages such as processing.
2, the High-Power Microwave mould relay antenna based on diffraction periodic structure can be converted to any axisymmetry mode
Single linear polarization mode, has a wide range of applications field.
3, the High-Power Microwave mould relay antenna based on diffraction periodic structure uses the sheet metal of fluting seam as radiation battle array
Face, compares conventional microstrip array antenna, and power capacity greatly improves.
Detailed description of the invention
High-Power Microwave mould relay antenna overall structure figure in Fig. 1 the present embodiment；
Designed cellular construction schematic diagram (a) top view (b) front view in Fig. 2 the present embodiment；
The transmission phase and transmission amplitude curve of designed unit in Fig. 3 the present embodiment；
TM in Fig. 4 the present embodiment01The field distribution schematic diagram of mould；
Single linear polarization field distribution schematic diagram in Fig. 5 the present embodiment；
Designed 16 × 16 rectangular front figure in Fig. 6 the present embodiment；
TM in Fig. 7 the present embodiment01Mode exciter radiated electric field distribution map (a) x- polarization components (b) y- polarization components；
The radiated electric field distribution map of designed antenna in Fig. 8 the present embodiment；
Normalization antenna pattern of the designed antenna at center frequency point 10GHz in Fig. 9 the present embodiment.
Specific embodiment
Purpose, advantage and technical solution in order to better illustrate the present invention, below in conjunction with specific embodiment, to the present invention
It is further elaborated.It should be noted that specific examples presented below, which functions only as explaining in detail, illustrates effect of the invention,
It is not intended to limit the present invention.
The present embodiment is a kind of by TM01The high power based on diffraction periodic structure that mould is converted to single linear polarization mode is micro-
Wave mould relay antenna, overall structure figure is as shown in Figure 1, antenna is made of Feed 1, antenna array 2 and bracket 3, the primary
Feed is TM01Mode exciter, driver bore are 80mm, are set to right above antenna array 2 by bracket 3, using positive feedback
Mode feeds antenna array.The antenna array is structured the formation by 256 transmission units according to 16 × 16, and mode is periodical to arrange
It arranges.In the present embodiment, the transmission units structural schematic diagram refers to Fig. 2, it is identical with cross by four layers
The sheet metal in shape gap forms, gap width 2.2mm, and carries out round corner treatment to cross gap both ends, to increase
The power capacity of antenna.Unit period P=16.3mm passes through support construction between adjacent two layers sheet metal and thickness H=is arranged
The air layer of 6.7mm.The sheet metal uses lightweight aluminium, thickness t=1mm, in the case where guaranteeing power capacity
Mitigate the overall weight of antenna as far as possible.
The directed radiation function of High-Power Microwave may be implemented in antenna in the present embodiment, by rationally designing on the direction y
Slot the length ly stitched, can compensate the incidence wave issued by feed and reach antenna array each unit spatial distance difference
Caused phase difference makes the electromagnetic wave through radiation front show plane wave front, and then realizes the orientation of High-Power Microwave
Radiation.Fig. 3 is the transmission phase and transmission amplitude curve of designed unit in the present embodiment, as seen from the figure, in ly from 14.1mm
Into 16.1mm variation range, the Phase-Shifting Characteristics curvilinear motion of unit is gentle, meets 360 degree of variation ranges, and transimission power is equal
Within -1dB, there is preferable transmission characteristic.
Meanwhile the antenna in the present embodiment may be implemented TM01Mould is converted to single linear polarization mode, realizes that high power is micro-
The mode conversion function of wave.TM01The field distribution schematic diagram of mould as shown in figure 4, by figure it can be seen that, TM01The electric field of mould point
Axial symmetry is presented in cloth, and electric field line dissipates in circular waveguide cross section from center around.Single linear polarization field distribution signal
Figure is as shown in figure 5, the direction of electric field line unanimously, is gradually reduced from center to two sides.According to twist-reflector principle, in the present embodiment
In, according to the length ly for seam of slotting on the above-mentioned fixed direction y, rationally design seam of slotting on the direction x in each unit
Length lx, that is, guarantee through radiation front after phase difference of the electric field on two components be 180 degree, while according to radiation front on
TM01The field distribution of mode rationally designs the rotation angle of unit, the twist-reflector of microwave can be realized, and then realize high power
The mode conversion function of microwave.
According to above-mentioned analysis, the present embodiment devises one 16 × 16 square-shaped radiation front, as shown in fig. 6, designed
Square-shaped radiation front side length is 260.8mm.Antenna feed uses TM01Mode exciter, radiated electric field distribution as shown in fig. 7,
As seen from the figure, electric field is axisymmetricly distributed.In order to further illustrate the overall performance of antenna designed in the present embodiment,
Fig. 8 illustrates the radiated electric field distribution map of antenna, and as seen from the figure, electric field shows the single linear polarization distribution of rule, and field
It is gradually reduced around by center by force.According to aerial radiation field distribution, the single line pole after conversion is calculated using program
The polarization purity of change mode reaches 96.8%, this shows that antenna designed in the present embodiment realizes efficient mode conversion
Function.As shown in figure 9, antenna gain is 22.5dB, main lobe is axisymmetricly distributed the normalization antenna pattern of antenna.
The present invention is suitable for the directed radiation and mode conversion, the power capacity of antenna and designed unit of High-Power Microwave
The enhanced intensity factor with feed to be radiated the maximum field strength on antenna array related, it is assumed that the enhanced intensity factor of unit is n,
Then n can be obtained by formula (1)：
Wherein, E1There is no maximum field strength when sheet metal, E in cellular construction2For there are four layers of metals in cellular construction
Maximum field strength when thin plate.Assuming that the maximum field strength that feed input power is radiated on antenna array when being 1W is E, hit in vacuum
Wearing field strength is Emax, then the power capacity P of antennamaxIt can be acquired by formula (2)：
According to unit designed in embodiment, feed input power is radiated the maximum field strength E on antenna array when being 1W
=4467.42V/m, since inventive antenna is usually applied in vacuum system, therefore taking disruptive field intensity in vacuum is Emax=
500kV/cm, it is 125MW that the power capacity that the present embodiment antenna reaches, which is calculated, according to formula (2), has reached expected purpose
And effect, this illustrates that the present invention can be used for directed radiation and the mode conversion of High-Power Microwave, is High-Power Microwave Net long wave radiation
Provide a kind of new technological approaches.
The foregoing examples are merely illustrative of the technical concept and features of the invention, be served only for that the present invention is specifically described,
So that one of ordinary skilled in the art is can understand the content of the present invention and implement it accordingly, protection of the invention can not be limited with this
Range.Equivalent change or modification made by all contents according to the present invention, should be covered by the protection scope of the present invention.
Claims (4)
1. a kind of High-Power Microwave mould relay antenna based on diffraction periodic structure, is made of Feed and antenna array；
The Feed is one mode driver, which generates axisymmetry mode, and using positive feedback side
Formula feeds antenna array；The antenna array is that multiple transmission units periodic arrangements form, and the transmission units are
Multilayer grooved sheet metal is formed by stacking up and down.
2. a kind of High-Power Microwave mould relay antenna based on diffraction periodic structure as described in claim 1, it is characterised in that：Institute
Stating gap on slotted metal thin plate is cross or rectangle or ellipse.
3. a kind of High-Power Microwave mould relay antenna based on diffraction periodic structure as described in claim 1, it is characterised in that：Institute
It states multilayer grooved sheet metal and passes through support construction between layers and be provided with air layer interval.
4. a kind of High-Power Microwave mould relay antenna based on diffraction periodic structure as described in claim 1, it is characterised in that：Institute
Stating antenna array is round or rectangular or regular hexagon.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810724194.8A CN108899637A (en) | 2018-07-04 | 2018-07-04 | A kind of High-Power Microwave mould relay antenna based on diffraction periodic structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810724194.8A CN108899637A (en) | 2018-07-04 | 2018-07-04 | A kind of High-Power Microwave mould relay antenna based on diffraction periodic structure |
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Cited By (6)
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| CN109904630A (en) * | 2019-01-18 | 2019-06-18 | 西安电子科技大学 | A kind of no medium focused transmission array antenna |
| CN110233339A (en) * | 2019-06-05 | 2019-09-13 | 西安电子科技大学 | A kind of low section transmission array antenna |
| WO2020155498A1 (en) * | 2019-01-31 | 2020-08-06 | 深圳市威富通讯技术有限公司 | Multiple-input multiple-output antenna and system |
| GB2587828A (en) * | 2019-01-31 | 2021-04-14 | Shenzhen Wave Telecommunication Tech Co Ltd | Multiple-Input Multiple-Output Antenna and System |
| CN114284654A (en) * | 2021-11-23 | 2022-04-05 | 电子科技大学 | Special-shaped grating loaded circular waveguide TM01-TE01Mode converter |
| CN115332816A (en) * | 2022-08-23 | 2022-11-11 | 南京理工大学 | Reflective array antenna based on all-metal polarization torsion reflection unit |
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| CN109904630A (en) * | 2019-01-18 | 2019-06-18 | 西安电子科技大学 | A kind of no medium focused transmission array antenna |
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| CN114284654A (en) * | 2021-11-23 | 2022-04-05 | 电子科技大学 | Special-shaped grating loaded circular waveguide TM01-TE01Mode converter |
| CN115332816A (en) * | 2022-08-23 | 2022-11-11 | 南京理工大学 | Reflective array antenna based on all-metal polarization torsion reflection unit |
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Application publication date: 20181127 |