CN107884629A - A kind of antenna feeder formula tightens field device - Google Patents
A kind of antenna feeder formula tightens field device Download PDFInfo
- Publication number
- CN107884629A CN107884629A CN201711048020.6A CN201711048020A CN107884629A CN 107884629 A CN107884629 A CN 107884629A CN 201711048020 A CN201711048020 A CN 201711048020A CN 107884629 A CN107884629 A CN 107884629A
- Authority
- CN
- China
- Prior art keywords
- reflecting surface
- antenna feeder
- formula
- compact range
- feed
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- 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
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/12—Supports; Mounting means
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q19/00—Combinations of primary active antenna elements and units with secondary devices, e.g. with quasi-optical devices, for giving the antenna a desired directional characteristic
- H01Q19/10—Combinations of primary active antenna elements and units with secondary devices, e.g. with quasi-optical devices, for giving the antenna a desired directional characteristic using reflecting surfaces
- H01Q19/12—Combinations of primary active antenna elements and units with secondary devices, e.g. with quasi-optical devices, for giving the antenna a desired directional characteristic using reflecting surfaces wherein the surfaces are concave
- H01Q19/13—Combinations of primary active antenna elements and units with secondary devices, e.g. with quasi-optical devices, for giving the antenna a desired directional characteristic using reflecting surfaces wherein the surfaces are concave the primary radiating source being a single radiating element, e.g. a dipole, a slot, a waveguide termination
Abstract
The invention discloses a kind of antenna feeder formula to tighten field device, and the device is mainly made up of Compact Range reflecting surface, adaptive location feed, laser tracker and microwave dark room.Compact Range reflecting surface is quadratic surface, and reflecting surface size increase causes reflecting surface two dimension bending amount of bias to add up and into quadratic power increase, will malformation and long-term creep caused by aggravation deadweight, the structural stability and type face precision of reflection surface system can be reduced.The antenna feeder formula that the present invention announces tightens field device, and formula structure of being lain after reflecting surface use, feed is laid out using antenna feeder formula, is advantageous to be lifted the structural stability and type face precision of ultra-large Compact Range reflection surface system, the plane wave mass in lifting Compact Range dead zone.
Description
Technical field
The present invention relates to the technical field of Compact Range, the antenna feeder formula of more particularly to a kind of high stability tightens field device, always
It is laid out in body structure using antenna feeder formula, main purpose is to lift the stability of Compact Range structural system, reduces ultra-large deflation
Field structure designs and manufacture difficulty, lifts the plane wave mass and long-time stability in ultra-large Compact Range dead zone, particularly suitable
Exceed 30m ultra-large type Compact Range in reflecting surface scale.
Background technology
As extensive, mass electronic is equipped, such as full-scale actual load aircraft and large-scale Shipborne Phased Array Radar
The demand equipped and safeguarded, the demand of the full-scale Radar Target Scatter of accurate measurement and large aperture antenna is increasingly urgent.Tradition
Single reflection face Compact Range, present to generally use formula offset-fed layout, reflecting surface is leans forward or lain on one's side formula structure.Dead zone size exceedes
30m ultra-large reflecting surface bending biasing jib-length nearly reaches 8m, and the torque that leans forward of ground feedback layout reflecting surface, which will reduce, to be tied
The stability of construction system, it is unfavorable for overcoming back frame structure caused by deadweight to deform in short-term and long-term creep, is unfavorable for ensureing reflection
The type face mechanical precision and dead zone plane wave performance of plane system.In addition, ultra-large Compact Range will increase reflecting surface and feed is whole
The Project Realization difficulty and manufacturing cost of body location base, it is difficult to it is non-homogeneous caused by non-homogeneous carrying to tackle concrete foundation
Sedimentation, cause dead zone deterioration so as to further result in feed defocusing irradiation Compact Range reflecting surface.
The content of the invention
It is an object of the invention to：It is proposed that a kind of antenna feeder formula tightens field device, feed is using the layout irradiation reflection of antenna feeder formula
Face, the formula of lying reduces the influence that reflecting surface is conducted oneself with dignity to structural stability and type face precision after Compact Range is, laser tracker is real-time
The drift of relative position between feed and reflecting surface is monitored, carrys out adaptive location feed and adjusts to the focus of reflecting surface.
The present invention adopts the following technical scheme that to reach foregoing invention purpose：
A kind of antenna feeder formula tightens field device, the Compact Range mainly lain after formula reflection surface system, antenna feeder formula feed system, swash
Light tracing measurement system and microwave dark room composition, feed system is using formula reflecting surface of being lain after the layout irradiation of antenna feeder formula, by what is sent
Spherical wave collimation is plane wave, and feed tracks prison in real time with the non-homogeneous drift of reflecting surface mounting structure and basis by laser
Control, is realized to the optimal irradiation of reflecting surface by adaptive equalization positioning.
Wherein, described antenna feeder formula Compact Range reflecting surface is lain formula structure after using, and ground is presented into formula offset-fed Compact Range reflecting surface
Lean forward biasing caused by backrest cantilever design be improved as lower support, overcome deadweight to cause by the center of gravity for moving down reflection surface system
The torque that leans forward, so as to improve its structural stability.
Wherein, laser tracker monitors reflecting surface and changed with the drift of feed system relative position in real time, adaptive location feedback
Source realizes that reflecting surface is irradiated in best match, is advantageous to be lifted the stability of Compact Range structural system.Described antenna feeder formula Compact Range
Feed and reflecting surface installation foundation be difficult to integration, there is the factor of non-homogeneous drift in mutual alignment, using laser tracker
Monitoring geometric position dynamic change in real time, the focus of adaptive location feed to reflecting surface.
Wherein, the edge of described Compact Range reflecting surface mouth face design, is not limited to the specific boundary form of reflecting surface,
Handled including sawtooth or curling.To suppress interference of the edge diffraction to dead zone.
Wherein, described antenna feeder formula tightens field system and is installed in microwave dark room, and the absorbing material of each sidewalls is through type selecting
With the optimization of layout, optimal low ambient level is realized.
Wherein, described antenna feeder formula Compact Range system core function is to form ultra-large plane wave dead zone, is not limited to
The concrete application of the electromagnetic radiation of special-purpose, scattering or other simulated measurements.
The principle of the present invention is as follows：
It is the centre of gravity design based on reflecting surface structure that the antenna feeder formula of the present invention, which tightens field device, lifts ultra-large deflation
The stability of field structure system, improve the type face precision of accurate reflection surface system, lift dead zone plane wave mass.Centre of gravity designs
Principle be by the bending of ultra-large offset-fed reflecting surface biasing, formula of being lain after layout, backrest primary load bearing is by the cantilevered that leans forward
Optimize and revise as lower support structure, reduce the tilting moment that leaned forward caused by deadweight, improve the stability of structural system.Antenna feeder
Between formula feed and reflecting surface precision-matched positioning, by laser track in real time monitoring, and with feed adaptive location device shape
Into closed-loop system, the best match irradiation of antenna feeder formula feed is realized, forms ultra-large constant amplitude equiphase plane ripple dead zone.
The present invention compared with prior art the advantages of be：
(1) present invention improves the structural stability for tightening field system, and it is dark to be particularly suitable for large-scale or ultra-large type Compact Range
Chamber system.Instant invention overcomes traditional ground feedback offset-feed type Compact Range layout, and ultra-large reflecting surface, which will excessively lean forward, to be caused
Larger tilting moment.Because the reflecting surface bending biasing of ultra-large reflecting surface offset-fed asymmetric layout increase can exceed 8m,
The great tilting moment that deadweight and biasing are formed, dramatically reduces the stability of structural system, offsetting its influence needs to mend
Engineering difficulty and manufacturing cost can also be increased by repaying design.
(2) adaptive feed alignment system of the invention, real-time monitoring reflecting surface and antenna feeder feed are tracked by laser
Relative position changes, and Adaptive matching is positioned at the focus of reflecting surface, solves reflecting surface and feed mounting structure basis is difficult to one
Non-uniform Settlement caused by body drifts about.
Brief description of the drawings
Fig. 1 is antenna feeder formula Compact Range device schematic side view；
Fig. 2 is to tighten the positive front view in field device bore face；
Fig. 3 is rear dead zone side view in tightening field device bore face with before；
Fig. 4 is to tighten the horizontal wire spoke distributed mutually figure (300MHz) in dead zone in field device；
Fig. 5 is to tighten the vertical wire spoke distributed mutually figure (300MHz) in dead zone in field device；
Reference implication is in figure：
In Fig. 1：1 be single reflection face Compact Range reflecting surface, 2 be antenna feeder formula Compact Range feed adaptive location device, 3
It is truss-like Compact Range back frame structure for the feed of Compact Range, 4,5 be measurement feed and the tracking of the laser of reflecting surface relative position
Instrument, 6 be microwave dark room ground, and 7 be Devices to test in Compact Range dead zone, and 8 be wall after microwave dark room, and 9 be installation antenna feeder formula feed
Microwave dark room ceiling, 10 be microwave dark room front wall.
In Fig. 3：101 be after lie formula Compact Range reflecting surface, 301 be the feed of antenna feeder formula Compact Range, and 11 be the quiet of Compact Range
Area.
In Fig. 4 and Fig. 5：Phase is that the phase (deg.) of dead zone field is distributed, and Magnitude is the normalization width of dead zone field
Spend (dB) distribution, working frequency 300MHz, transversal respectively positioned at center dead zone horizontal line (x position [m]) and vertically
Line (y position [m]).
Embodiment
Below in conjunction with the accompanying drawings and specific embodiment further illustrates the present invention.
A preferred embodiment of the present invention：
Antenna feeder formula as shown in Figure 1 tightens field device, including the reflecting surface 1 of single reflection face Compact Range, antenna feeder formula Compact Range
Feed adaptive location device 2, the feed 3 of Compact Range, truss-like Compact Range back frame structure 4, measurement feed and reflecting surface phase
To wall 8, installation day after Devices to test 7, microwave dark room in the laser tracker 5 of position, microwave dark room ground 6, Compact Range dead zone
The microwave dark room ceiling 9 and microwave dark room front wall 10 of feedback formula feed, wherein,
It is dark that the reflecting surface 1 of the Compact Range in described single reflection face by truss-like Compact Range back frame structure 4 is fixed on microwave
Room front wall 10 is desired plane wave wavefront to correct driving source wave-front conversion, the formula of lying is consolidated after reflecting surface uses nearby
It is fixed, microwave dark room ceiling 9 of its focus positioned at installation antenna feeder formula feed.
The feed 3 of described Compact Range, the reflecting surface focal point of darkroom ceiling 9 is installed on, is finally being waited for system
Initial wave source is provided when forming plane wave in effect dead zone.Single reflection face is tightened field system and is laid out using antenna feeder formula, and main purpose is
The stability of Compact Range structural system is lifted, reduces ultra-large Compact Range structural design and manufacturing difficulty, lifting is ultra-large
The plane wave mass and long-time stability in Compact Range dead zone.
Described measurement feed and the laser tracker 5 of reflecting surface relative position, are fixed on darkroom ground, laser tracker
Monitoring reflecting surface changes with the drift of feed system relative position in real time, and adjusts feed in real time by feed adaptive location device
In the focus of reflecting surface, the stability of lifting Compact Range quiet zone performance.
Each metope of described microwave dark room, ground, the wall of ceiling lay absorbing material, absorbing material through type selecting with
The optimization of layout, to realize optimal low ambient level.
Positioned at the dead zone for tightening field system, the electromagnetic wave in the region has puts down Devices to test 7 in described Compact Range dead zone
The characteristic of face ripple, available for antenna/RCS tests.
The wide 60m of the size of reflecting surface 1, the high 35m, focal length 65m of single reflection face Compact Range, empty summit raise 1.5m, single reflection
16,1 or so sawtooth of reflecting surface, the upper and lower heel teeth 28 of face Compact Range, left and right heel teeth length 3.2m, upper and lower heel teeth length 3.2m.
Lowest operating frequency 300MHz, the electric size of the reflecting surface 1 of single reflection face Compact Range are about 35~60 times of wavelength, heel teeth length
3.2 times of wavelength, caliber size and edge sawtooth length meet the low-frequency limit requirement of Compact Range.
The darkroom size for installing Compact Range is wide 75m × high 40m × long 140m, and dead zone is centrally located at darkroom centre-height,
The wide 40m of dead zone size, high 20m, long 40m, horizontal bore utilization rate about 70%, vertical direction bore utilization rate about 60%.
The most preceding last amount of bias of the tangent bend of the paraboloid of revolution closely reaches 8m, as shown in figure 3,101 be after lie formula Compact Range reflecting surface, 301
It is the dead zone of Compact Range for the feed of antenna feeder formula Compact Range, 11.Formula structure of being lain after reflecting surface layout use is advantageous to improve reflection
The force-bearing situation and long-time stability of device structural system.
The Compact Range lowest operating frequency of this example specifications is 300MHz, and have that low frequency extends to 150MHz can
Can, but the layout specially treated of absorbing material need to be arranged to feed MIRROR SITE, main beam is done with suppressing mirror image defocusing wave beam
Disturb.Because limited in VHF band absorbing material performance, the dual station mirror image beam that large angle incidence motivates especially is tilted, even if
When wall covering suction ripple processing is still similar with desired metallic plane, mirror reflection forms the defocusing irradiation to reflecting surface, causes to put down
There are the spectral components faced upward in face wave angle spectrum cracking, and disturbs the normal wave beam in dead zone.
The Compact Range maximum operating frequency suggestion of this example specifications is 18GHz, meets the testing requirement of conventional microwave band,
And the possibility that high frequency extends to 40GHz be present, then the monolithic devices face precision of reflector structure system need to reach 75 microns.High frequency
Performance depends primarily on the precision and stability of reflecting surface structure system, and antenna feeder formula layout designs advantageously ensure that ultra-large tight
The high frequency performance of contracting field system.
What the present invention did not elaborated partly belongs to techniques well known.
Claims (6)
1. a kind of antenna feeder formula tightens field device, it is characterised in that：The device is mainly by Compact Range reflecting surface, adaptive location feed
And microwave dark room composition, feed system is using formula reflecting surface of being lain after the layout irradiation of antenna feeder formula, the spherical wave collimation that will be sent
For plane wave, feed tracks monitoring in real time with the non-homogeneous drift of reflecting surface mounting structure and basis by laser, by adaptive equalization
Position to realize to the optimal irradiation of reflecting surface.
2. a kind of antenna feeder formula as claimed in claim 1 tightens field device, it is characterised in that：Described antenna feeder formula Compact Range reflection
Face is lain formula structure after using, and the backrest cantilever design caused by ground is presented into the biasing of leaning forward of formula offset-fed Compact Range reflecting surface is improved as down
Support, the center of gravity by moving down reflection surface system overcomes the torque that leaned forward caused by deadweight, so as to improve its structural stability.
3. a kind of antenna feeder formula as claimed in claim 1 tightens field device, it is characterised in that：Laser tracker monitors reflection in real time
Face changes with the drift of feed system relative position, and adaptive location feed realizes that reflecting surface is irradiated in best match, is advantageous to be lifted
The stability of Compact Range structural system.
4. a kind of antenna feeder formula as claimed in claim 1 tightens field device, it is characterised in that：Described antenna feeder formula tightens field system
Edge treated, specific curling or sawtooth processing are not limited to, to suppress interference of the edge diffraction to dead zone.
5. a kind of antenna feeder formula as claimed in claim 1 tightens field device, it is characterised in that：Described antenna feeder formula tightens field system
It is installed in microwave dark room, optimization of the absorbing material through type selecting with layout of each sidewalls, realizes optimal low ambient level.
6. a kind of antenna feeder formula as claimed in claim 1 tightens field device, it is characterised in that：Described antenna feeder formula tightens field system
Core Feature is to form ultra-large plane wave dead zone, and the electromagnetic radiation, scattering or other emulation for being not limited to special-purpose are surveyed
The concrete application of amount.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711048020.6A CN107884629A (en) | 2017-10-31 | 2017-10-31 | A kind of antenna feeder formula tightens field device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711048020.6A CN107884629A (en) | 2017-10-31 | 2017-10-31 | A kind of antenna feeder formula tightens field device |
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| Publication Number | Publication Date |
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| CN107884629A true CN107884629A (en) | 2018-04-06 |
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| CN201711048020.6A Pending CN107884629A (en) | 2017-10-31 | 2017-10-31 | A kind of antenna feeder formula tightens field device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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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| Publication number | Priority date | Publication date | Assignee | Title |
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