CN106249058B - A kind of holographic reflections battle array Compact Range - Google Patents
A kind of holographic reflections battle array Compact Range Download PDFInfo
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- CN106249058B CN106249058B CN201610608751.0A CN201610608751A CN106249058B CN 106249058 B CN106249058 B CN 106249058B CN 201610608751 A CN201610608751 A CN 201610608751A CN 106249058 B CN106249058 B CN 106249058B
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- array antenna
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R29/00—Arrangements for measuring or indicating electric quantities not covered by groups G01R19/00 - G01R27/00
- G01R29/08—Measuring electromagnetic field characteristics
- G01R29/10—Radiation diagrams of antennas
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S7/00—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00
- G01S7/02—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00 of systems according to group G01S13/00
- G01S7/41—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00 of systems according to group G01S13/00 using analysis of echo signal for target characterisation; Target signature; Target cross-section
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- Electromagnetism (AREA)
- Computer Networks & Wireless Communication (AREA)
- Radar, Positioning & Navigation (AREA)
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- Aerials With Secondary Devices (AREA)
Abstract
The present invention relates to a kind of holographic reflections battle array Compact Ranges, it is made of feed, reflective array antenna and heel teeth, feed is just presenting vertical irradiation reflective array antenna, the spherical wave that reflective array antenna issues feed is plane wave in proximity correction, and edge diffraction is inhibited by bore layout and heel teeth, specific plane wave dead zone is generated to meet the far field condition demand of antenna radiation pattern or target RCS test.The present invention is to the machining accuracy of reflective array antenna an order of magnitude lower than traditional reflecting surface, using print structure, portable construction, production is simple, is easily installed, manufacturing cost can be reduced, be suitable for constructing at low cost millimeter wave submillimeter wave wave band radiation or scattering test macro.
Description
Technical field
The present invention relates to field technology is tightened, in particular to a kind of new holographic reflective array Compact Range, which are mainly applied to millis
Metric wave submillimeter wave test, can satisfy antenna radiation pattern or target RCS test far field condition demand.
Background technique
With millimeter wave submillimeter wave technology fast development, millimeter wave Sub-MM Wave Antenna test demand increasingly compel
It cuts.Traditional near field, outdoor far field have the defects that be difficult to overcome in terms of millimeter wave test.Tighten field technology in millimeter wave
There is irreplaceable important function in antenna measurement technology.Traditional reflective surface antenna is limited by the limitation of machining accuracy,
It is too high applied to submillimeter region more difficulty or manufacturing cost.
Summary of the invention
Technology of the invention solves the problems, such as: a kind of holographic reflections battle array Compact Range is overcome the deficiencies of the prior art and provide, it can be with
Substitute traditional paraboloid Compact Range, be applied to millimeter wave submillimeter wave test；Holographic reflections battle array proposed by the present invention tightens
, an order of magnitude lower than traditional reflecting surface to the machining accuracy of reflective array antenna, using print structure, portable construction, system
Make it is simple, be easily installed, manufacturing cost can be reduced, be suitable for constructing at low cost millimeter wave submillimeter wave wave band radiation
Or scattering test macro.
The present invention adopts the following technical scheme that a kind of holographic reflections battle array Compact Range in order to achieve the above object of the invention, comprising:
Feed, reflective array antenna and heel teeth；Heel teeth is located at reflective array antenna edge；Feed is located at reflective array antenna overcentre, vertically
Reflective array antenna is irradiated, using the Fresnel region of reflective array antenna near-field thermal radiation, converts inclination for the spherical wave that feed issues
The plane wave of outgoing, and edge diffraction is inhibited by reflective array antenna bore layout and heel teeth, plane wave dead zone is generated, to meet
Antenna radiation pattern or the far field condition demand of target RCS test.
The position of the feed is fixed, and the polarization direction of feed is adjustable.
The near field Fresnel region of reflective array antenna is utilized in the reflective array antenna.
The feed is set as focal length to reflective array antenna distance, and focal length and the ratio of reflective array antenna side length are defined as burnt diameter
It is set to 1.5~2 than, burnt diameter ratio, appropriate focal length design blocks reflection near normal excitation reflective array antenna to avoid feed
Array element, moderate compression take up an area size and plane wave dead zone position to control place to promote plane wave quiet zone performance.
The angle, θ of the plane wave of the inclination outgoing is 30~40 degree, and the selection of θ value wants moderate, and too heavy caliber inclination is thrown
Shadow is serious, and bore utilization rate reduces；Too small feed can block the plane wave dead zone of outgoing.
After described generation plane wave dead zone 2 times of bores of positional distance reflective array antenna；The plane wave dead zone is rectangle
Bore shape.
The reflective array antenna bore cloth exchange line is using 30~60 degree of square rotation.
The reflective array unit of the reflective array antenna can finely control reflected phase, make reflective array antenna bore
Energy utilization efficiency is high.
The principle of the present invention is as follows: the present invention is based on reflective array antennas and principle of holography, and the spherical wave that feed issues is existed
Proximity correction is plane wave, therefore can use reflective array antenna and feed constructs a kind of new holographic reflective array Compact Range,
Meet the far field condition demand of antenna radiation pattern or target RCS test.
Reflective array antenna is made of reflection array element, and reflection array element has phase modulating properties, anti-using broadband
Penetrate array element.As shown in Figure 1, reflection array element 4 turns 45 degree of rectangles by inside and outer annular forms, the two meets ratio pass
System, which is designed using double resonance, while having added air layer 5 to increase bandwidth among dielectric substrate 7 and earth plate 8,
Middle R is the spacing reflected between array element 4, and L is outer annular length, and W is outer annular width,For inner rectangular rotation angle
Degree, inner rectangular are the thickness of dielectric substrate 7 having a size of 0.5*L-W, h1, and h2 is the thickness of air layer 5.By changing reflective array
Unit outer annular size L carries out the regulation of phase, and the phase of regulation covers the section 0-2 π.So each unit can be to incident ball
The phase of surface wave carries out finely regulating, is corrected to plane wave, and the energy utilization efficiency of lifting system.
Fig. 2 is the phase change curve of Ka band broadband reflector element at different frequencies, and wherein abscissa is reflective array
The outer annular size L of unit 4, ordinate are that the phase under different L dimension parameters regulates and controls angle, pass through formula:
It realizes holographic fixing wavefront record, realizes that the digitalized intervention of spherical wave and plane wave records on reflective array, calculate
The phase that should adjust out simultaneously realizes that F is focal length in formula with corresponding dimension cells, and λ is wavelength, and θ is plane wave exit direction.Again
When irradiating reflective array bore realization holography development wavefront reconstruction by feed, the phase of reflective array unit regulating record on bore
The spheric wave front of history first item will be motivated by feed and be compensated, and remaining Section 2 will be for the plane wave of desired reconstruction render
Before, short distance radiation propagation to Fresnel region, and the edge diffraction for controlling array bore influences, to form the flat of the phases such as quasi- constant amplitude
Surface wave dead zone.
The present invention compared with the existing technology the advantages of be: holographic Compact Range of the invention as a kind of novel Compact Range,
Traditional paraboloid Compact Range can be substituted, be applied to millimeter wave submillimeter wave test；Holographic reflections battle array proposed by the present invention is tight
Contracting field, an order of magnitude lower than traditional reflecting surface to the machining accuracy of reflective array antenna, using print structure, portable construction,
Production is simple, is easily installed, and can reduce manufacturing cost, be suitable for constructing at low cost millimeter wave submillimeter wave wave band spoke
Penetrate or scatter test macro.
Detailed description of the invention
Fig. 1 is reflective array cellular construction figure；Wherein the left side is reflection array element top view, and right figure is reflective array unit side view
Figure；
Fig. 2 is the phase change curve of Ka band broadband reflector element at different frequencies；
Fig. 3 is structural schematic diagram of the invention；
Fig. 4 is holographic reflections battle array Compact Range bore schematic layout pattern of the invention.
Specific embodiment
With reference to the accompanying drawing and the present invention is discussed in detail in specific embodiment.
As shown in figure 3, reflective array antenna 9 is made of reflection array element 4, dielectric substrate 7, air layer 5 and earth plate 8, no
Reflector element 4 with size is different the ability of the adjusting phase of electromagnetic wave, and the production of reflective array antenna 9 can use
PCB technology manufactures.
The function of reflective array antenna 9 be by feed issue spherical wave proximity correction be plane wave.
The just feedback vertical irradiation reflective array antenna 9 of feed 1, guarantees that bore uniform irradiation, Spherical wave approximation vertical irradiation are all
Reflect array element 4.
Holographic reflections battle array Compact Range focal length 3 is set as 1.5 times of reflective array antenna side lengths.
Holographic reflections battle array Compact Range rotates 45 degree of bore layout using square, which can effectively make edge diffraction pair
The influence in plane wave dead zone 2 reduces.
The edge of holographic reflections battle array Compact Range is handled using heel teeth, and heel teeth 6 can reduce edge diffraction level, improves plane wave
The performance in dead zone 2.
Heel teeth 6 is isosceles triangle shape, and the height of heel teeth 6 is 6.5 wavelength, and width is two wavelength.
The position in holographic reflections battle array Compact Range plane wave dead zone 2 is chosen at after 2 times of bores of reflective array antenna.
A preferred embodiment of the present invention: system structure diagram as shown in Figure 3.The excitation of Ka wave band feed source is vertical to shine
Penetrate reflective array.Design center frequency is 32GHz, and system can work in 28GHz~36GHz frequency range, dead zone beam position
It can frequency change.Reflective array antenna work is in Ka wave band, and 50 × 50 wavelength of caliber size, being structured the formation by reflector element can calibration spherical surface
Wave.Corrugated horn can be selected in feed, and wave beam minor level is low, and phase center is stablized.Reflective array turns 45 degree of layouts using square,
Edge is handled using heel teeth.
What the present invention did not elaborated partly belongs to techniques well known.
Claims (5)
1. a kind of holographic reflections battle array Compact Range, it is characterised in that: including feed, reflective array antenna and heel teeth；Heel teeth is located at reflection
Array antenna edge；Feed is located at reflective array antenna overcentre, and vertical irradiation reflective array antenna utilizes reflective array antenna near field spoke
The Fresnel region penetrated converts the spherical wave that feed issues to the plane wave of inclination outgoing, and passes through reflective array antenna bore cloth
Office and heel teeth inhibit edge diffraction, generate plane wave dead zone, to meet the far field condition need of antenna radiation pattern or target RCS test
It asks；
The angle, θ of the plane wave of the inclination outgoing is 30~40 degree；
The reflective array antenna bore cloth exchange line is using 30~60 degree of square rotation.
2. a kind of holographic reflections battle array Compact Range according to claim 1, it is characterised in that: the position of the feed is fixed,
The polarization direction of feed is adjustable.
3. a kind of holographic reflections battle array Compact Range according to claim 1, it is characterised in that: the feed to reflective array antenna
Distance is set as focal length, and focal length and the ratio of reflective array antenna side length are defined as burnt diameter ratio, and burnt diameter ratio is set to 1.5~2, appropriate focal length
Design with avoid feed block near normal excitation reflective array antenna reflection array element, moderate compression come control place land occupation
Size and plane wave dead zone position are to promote plane wave quiet zone performance.
4. a kind of holographic reflections battle array Compact Range according to claim 1, it is characterised in that: the generation plane wave dead zone
After 2 times of bores of positional distance reflective array antenna；The plane wave dead zone is rectangular aperture shape.
5. a kind of holographic reflections battle array Compact Range according to claim 1, it is characterised in that: the reflection of the reflective array antenna
Array element can finely control reflected phase, keep the energy utilization efficiency of reflective array antenna bore high.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201610608751.0A CN106249058B (en) | 2016-07-28 | 2016-07-28 | A kind of holographic reflections battle array Compact Range |
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| CN201610608751.0A CN106249058B (en) | 2016-07-28 | 2016-07-28 | A kind of holographic reflections battle array Compact Range |
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| CN106249058A CN106249058A (en) | 2016-12-21 |
| CN106249058B true CN106249058B (en) | 2019-01-25 |
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Families Citing this family (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107611623A (en) * | 2017-07-21 | 2018-01-19 | 西安普腾电子科技有限公司 | A kind of high efficiency tightens radiation field of aerial and target scattering test system |
| CN107884629A (en) * | 2017-10-31 | 2018-04-06 | 北京航空航天大学 | A kind of antenna feeder formula tightens field device |
| CN107727946A (en) * | 2017-11-08 | 2018-02-23 | 北京航空航天大学 | Tighten field device in a kind of single reflection face of high cross polarization isolation |
| CN108631046B (en) * | 2018-01-31 | 2020-01-21 | 北京航空航天大学 | Quasi-plane wave generator based on array antenna and generation method |
| CN108539436B (en) * | 2018-04-18 | 2020-10-02 | 北京航空航天大学 | Wide-angle off-axis small-angle offset-fed broadband reflection array compact field device |
| CN108693653A (en) * | 2018-05-04 | 2018-10-23 | 上海机电工程研究所 | Radio frequency holographic transmission/light reflection formula Shared aperture composite plane wave-field simulation device |
| CN110609330B (en) * | 2019-09-06 | 2021-03-26 | 北京理工大学 | Sparse array real-beam electric scanning rapid imaging system |
| CN113030597B (en) * | 2019-12-24 | 2024-05-17 | 川升股份有限公司 | Antenna measuring system integrating far field and distance-reducing field |
| CN112748414B (en) * | 2020-12-24 | 2024-02-23 | 中国航空工业集团公司沈阳飞机设计研究所 | Wave absorbing screen for measuring target RCS |
| CN112909574B (en) * | 2021-02-09 | 2022-09-20 | 中国科学院光电技术研究所 | Dual-frequency large-angle scanning film reflective array antenna based on sub-wavelength structure |
| CN113219244B (en) * | 2021-05-07 | 2022-08-30 | 北京航空航天大学 | Ultra-wide band plane wave generating system |
| CN114563630A (en) * | 2022-02-28 | 2022-05-31 | 西安电子科技大学 | Compact range device based on microstrip patch reflective array antenna |
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