CN106249058A - A kind of holographic reflections battle array Compact Range - Google Patents
A kind of holographic reflections battle array Compact Range Download PDFInfo
- Publication number
- CN106249058A CN106249058A CN201610608751.0A CN201610608751A CN106249058A CN 106249058 A CN106249058 A CN 106249058A CN 201610608751 A CN201610608751 A CN 201610608751A CN 106249058 A CN106249058 A CN 106249058A
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- array antenna
- reflective array
- feed
- plane wave
- compact range
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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
-
- 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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- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Electromagnetism (AREA)
- Computer Networks & Wireless Communication (AREA)
- Radar, Positioning & Navigation (AREA)
- Remote Sensing (AREA)
- Aerials With Secondary Devices (AREA)
Abstract
The present invention relates to a kind of holographic reflections battle array Compact Range, it is made up of feed, reflective array antenna and heel teeth, feed is just presenting vertical irradiation reflective array antenna, the spherical wave that feed is sent by reflective array antenna is plane wave at proximity correction, and 'go'gage layout and heel teeth suppress edge diffraction, produce specific plane wave dead zone to meet antenna radiation pattern or the far field condition demand of target RCS test.The present invention to the machining accuracy of reflective array antenna than traditional reflecting surface order of magnitude lower, use print structure, portable construction, making is simple, be easily installed, manufacturing cost can be reduced, be suitable for building at low cost millimeter wave the radiation of submillimeter wave wave band or scattering test system.
Description
Technical field
The present invention relates to Compact Range technology, particularly to a kind of new holographic reflective array Compact Range, it is mainly used in milli
Metric wave submillimeter wave test, can meet antenna radiation pattern or target RCS test far field condition demand.
Background technology
Along with millimeter wave the fast development of submillimeter wave technology, millimeter wave the demand of Sub-MM Wave Antenna test the most urgent
Cut.Traditional near field, all there is the defect being difficult to overcome in outdoor far field in terms of millimeter wave test.Compact Range technology is at millimeter wave
Antenna measurement technology has irreplaceable important function.Traditional reflective surface antenna is limited by the restriction of machining accuracy,
It is applied to submillimeter region more difficulty or manufacturing cost the highest.
Summary of the invention
The technology of the present invention solves problem: overcome the deficiencies in the prior art, it is provided that a kind of holographic reflections battle array Compact Range, permissible
Substitute traditional parabola Compact Range, be applied to millimeter wave submillimeter wave test;The holographic reflections battle array that the present invention proposes tightens
, to the machining accuracy of reflective array antenna than traditional reflecting surface order of magnitude lower, use print structure, portable construction, system
Make simple, be easily installed, manufacturing cost can be reduced, be suitable for building at low cost millimeter wave the radiation of submillimeter wave wave band
Or scattering test system.
The present invention adopts the following technical scheme that a kind of holographic reflections battle array Compact Range to reach foregoing invention purpose, including:
Feed, reflective array antenna and heel teeth;Heel teeth is positioned at reflective array antenna edge;Feed is positioned at reflective array antenna overcentre, vertically
Irradiating reflective array antenna, utilize the Fresnel region of reflective array antenna near-field thermal radiation, the spherical wave sent by feed is converted into inclination
The plane wave of outgoing, and by reflective array antenna bore layout and heel teeth suppression edge diffraction, produce plane wave dead zone, to meet
Antenna radiation pattern or the far field condition demand of target RCS test.
The position of described feed is fixed, and the polarised direction of feed is adjustable.
Described reflective array antenna, make use of the near field Fresnel region of reflective array antenna.
Described feed is set to focal length to reflective array antenna distance, and focal length is defined as burnt footpath with the ratio of the reflective array antenna length of side
Ratio, burnt footpath ratio is set to 1.5~2, and appropriateness focal length design is blocked and the reflection of near normal excitation reflective array antenna to avoid feed
Array element, moderate compression controls place and takes up an area size and position, plane wave dead zone to promote plane wave quiet zone performance.
The angle, θ of the plane wave of described inclination outgoing is 30~40 degree, and choosing of θ value is moderate, and too heavy caliber tilts to throw
Shadow is serious, and bore utilization rate reduces;The least 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;Described plane wave dead zone is rectangle
Bore shape.
Described reflective array antenna bore cloth exchange line uses square to rotate 30~60 degree.
Reflected phase can be finely controlled by the reflective array unit of described reflective array antenna, makes reflective array antenna bore
Energy utilization efficiency is high.
The principle of the present invention is as follows: the present invention exists based on reflective array antenna and principle of holography, the spherical wave sent by feed
Proximity correction is plane wave, and reflective array antenna and feed therefore can be utilized to build a kind of new holographic reflective array Compact Range,
Meet antenna radiation pattern or the far field condition demand of target RCS test.
Reflective array antenna is made up of reflective array unit, and reflective array unit has phase place modulating properties, uses broadband anti-
Penetrate array element.As it is shown in figure 1, reflective array unit 4 is turned 45 degree of rectangles by inside and outer annular forms, both meet ratio and close
System, this unit uses double resonance design, simultaneously at the middle air layer 5 that added of dielectric substrate 7 and earth plate 8 to increase bandwidth, its
Middle R is the spacing between reflective array unit 4, and L is outer annular length, and W is outer annular width,For the inner rectangular anglec of rotation
Degree, inner rectangular a size of 0.5*L-W, h1 are the thickness of dielectric substrate 7, and h2 is the thickness of air layer 5.By changing reflective array
Unit outer annular size L carries out the regulation and control of phase place, and it is interval that the phase place of regulation and control covers 0-2 π.So each unit can be to incident ball
The phase place of face ripple carries out finely regulating, is corrected to plane wave, and promotes the energy utilization efficiency of system.
Fig. 2 is Ka band broadband reflector element phase place change curve at different frequencies, and wherein abscissa is reflective array
Outer annular size L of unit 4, vertical coordinate is the phase place regulation and control angle under different L dimension parameters, passes through formula:
Realize holographic fixing wavefront record, reflective array realizes the digitalized intervention record of spherical wave and plane wave, calculate
Going out the phase place that should regulate and realize with corresponding dimension cells, in formula, F is focal length, 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 place of reflective array unit regulating record on bore
The spheric wave front of history Section 1 will be compensated by feed excitation, and remaining Section 2 is by the plane wave for desired reconstruction render
Before, closely radiation propagation is to Fresnel region, and the edge diffraction controlling array bore affects, to form the flat of the phases such as quasi-constant amplitude
Ripple dead zone, face.
The present invention is relative to the advantage of prior art: the holographic Compact Range of the present invention as a kind of novel Compact Range,
Traditional parabola Compact Range can be substituted, be applied to millimeter wave submillimeter wave test;The holographic reflections battle array that the present invention proposes is tight
Contracting field, to the machining accuracy of reflective array antenna than traditional reflecting surface order of magnitude lower, use print structure, portable construction,
Make simple, be easily installed, manufacturing cost can be reduced, be suitable for building at low cost millimeter wave the spoke of submillimeter wave wave band
Penetrate or scatter test system.
Accompanying drawing explanation
Fig. 1 is reflective array cellular construction figure;Wherein the left side is reflective array unit top view, and right figure is that reflective array cell side regards
Figure;
Fig. 2 is Ka band broadband reflector element phase place change curve at different frequencies;
Fig. 3 is the structural representation of the present invention;
Fig. 4 is the holographic reflections battle array Compact Range bore schematic layout pattern of the present invention.
Detailed description of the invention
Below in conjunction with the accompanying drawings and detailed description of the invention is discussed in detail the present invention.
As it is shown on figure 3, reflective array antenna 9 is made up of, no reflective array unit 4, dielectric substrate 7, air layer 5 and earth plate 8
The ability that electromagnetic wave regulates phase place with the reflector element 4 of size is different, and the making of reflective array antenna 9 can use
PCB technology manufactures.
The function of reflective array antenna 9 be the spherical wave that feed is sent be plane wave at proximity correction.
Feed 1 is just presenting vertical irradiation reflective array antenna 9, it is ensured that bore uniform irradiation, and Spherical wave approximation vertical irradiation owns
Reflective array unit 4.
Holographic reflections battle array Compact Range focal length 3 is set to 1.5 times of reflective array antenna length of sides.
Holographic reflections battle array Compact Range uses the bore layout that square rotates 45 degree, and this layout can effectively make edge diffraction pair
The impact in plane wave dead zone 2 reduces.
The edge of holographic reflections battle array Compact Range uses heel teeth to process, and heel teeth 6 can reduce edge diffraction level, improve 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.
After the position in holographic reflections battle array Compact Range plane wave dead zone 2 is chosen at distance 2 times of bores of reflective array antenna.
A preferred embodiment of the present invention: system structure schematic diagram as shown in Figure 3.The excitation of Ka wave band feed source is vertical shines
Penetrate reflective array.Design center frequency is 32GHz, and system can be operated in 28GHz~36GHz frequency range, dead zone beam position
Can become by frequency.Reflective array antenna is operated in Ka wave band, 50 × 50 wavelength of caliber size, and being structured the formation by reflector element can calibration sphere
Ripple.Feed can be selected for corrugated horn, and wave beam minor level is low, and phase center is stable.Reflective array uses square to turn 45 degree of layouts,
Edge uses heel teeth to process.
What the present invention did not elaborated partly belongs to techniques well known.
Claims (7)
1. a holographic reflections battle array Compact Range, it is characterised in that: include feed, reflective array antenna and heel teeth;Heel teeth is positioned at reflection
Array antenna edge;Feed is positioned at reflective array antenna overcentre, vertical irradiation reflective array antenna, utilizes reflective array antenna near field spoke
The Fresnel region penetrated, the spherical wave sent by feed is converted into the plane wave of outgoing, and by reflective array antenna bore cloth
Office and heel teeth suppress edge diffraction, produce plane wave dead zone, to meet antenna radiation pattern or the far field condition need of target RCS test
Ask.
A kind of holographic reflections battle array Compact Range the most according to claim 1, it is characterised in that: the position of described feed is fixed,
The polarised direction of feed is adjustable.
A kind of holographic reflections battle array Compact Range the most according to claim 1, it is characterised in that: described feed is to reflective array antenna
Distance is set to focal length, and focal length is defined as burnt footpath ratio with the ratio of the reflective array antenna length of side, and burnt footpath ratio is set to 1.5~2, appropriateness focal length
Design with avoid feed block and near normal excitation reflective array antenna reflective array unit, moderate compression control place take up an area
Size and position, plane wave dead zone are to promote plane wave quiet zone performance.
A kind of holographic reflections battle array Compact Range the most according to claim 1, it is characterised in that: the plane wave of described inclination outgoing
AngleIt is 30~40 degree,Choosing of value is moderate, and too heavy caliber oblique projection is serious, and bore utilization rate reduces;The least feedback
The plane wave dead zone of outgoing can be blocked in source.
A kind of holographic reflections battle array Compact Range the most according to claim 1, it is characterised in that: described generation plane wave dead zone
After 2 times of bores of positional distance reflective array antenna;Described plane wave dead zone is rectangular aperture shape.
A kind of holographic reflections battle array Compact Range the most according to claim 1, it is characterised in that: described reflective array antenna bore cloth
Exchange line uses square to rotate 30~60 degree.
A kind of holographic reflections battle array Compact Range the most according to claim 1, it is characterised in that: the reflection of described reflective array antenna
Reflected phase can be finely controlled by array element, and the energy utilization efficiency making reflective array antenna bore is high.
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Cited By (11)
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 |
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 |
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 |
CN108539436A (en) * | 2018-04-18 | 2018-09-14 | 北京航空航天大学 | A kind of broadband reflection battle array deflation field device of the off-axis low-angle offset-fed of wide-angle |
CN108631046A (en) * | 2018-01-31 | 2018-10-09 | 北京航空航天大学 | A kind of quasi-plane wave generator and generation method based on array antenna |
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 |
CN110609330A (en) * | 2019-09-06 | 2019-12-24 | 北京理工大学 | Sparse array real-beam electric scanning rapid imaging system |
CN112748414A (en) * | 2020-12-24 | 2021-05-04 | 中国航空工业集团公司沈阳飞机设计研究所 | Wave absorbing screen for target RCS measurement |
CN112909574A (en) * | 2021-02-09 | 2021-06-04 | 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 |
CN113030597A (en) * | 2019-12-24 | 2021-06-25 | 川升股份有限公司 | Antenna measurement system integrating far field and shrinking distance field |
CN113219244A (en) * | 2021-05-07 | 2021-08-06 | 北京航空航天大学 | Ultra-wide band plane wave generating system |
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Cited By (16)
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 |
CN108631046A (en) * | 2018-01-31 | 2018-10-09 | 北京航空航天大学 | A kind of quasi-plane wave generator and generation method based on array antenna |
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 |
CN108539436A (en) * | 2018-04-18 | 2018-09-14 | 北京航空航天大学 | A kind of broadband reflection battle array deflation field device of the off-axis low-angle offset-fed of wide-angle |
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 |
CN110609330A (en) * | 2019-09-06 | 2019-12-24 | 北京理工大学 | Sparse array real-beam electric scanning rapid imaging system |
CN113030597A (en) * | 2019-12-24 | 2021-06-25 | 川升股份有限公司 | Antenna measurement system integrating far field and shrinking distance field |
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 |
CN112748414A (en) * | 2020-12-24 | 2021-05-04 | 中国航空工业集团公司沈阳飞机设计研究所 | Wave absorbing screen for target RCS measurement |
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 |
CN112909574A (en) * | 2021-02-09 | 2021-06-04 | 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 |
CN113219244A (en) * | 2021-05-07 | 2021-08-06 | 北京航空航天大学 | Ultra-wide band plane wave generating system |
CN113219244B (en) * | 2021-05-07 | 2022-08-30 | 北京航空航天大学 | Ultra-wide band plane wave generating system |
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