CN209448026U - Temperature control frequency based on water selects wave-absorber - Google Patents
Temperature control frequency based on water selects wave-absorber Download PDFInfo
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- CN209448026U CN209448026U CN201920050567.8U CN201920050567U CN209448026U CN 209448026 U CN209448026 U CN 209448026U CN 201920050567 U CN201920050567 U CN 201920050567U CN 209448026 U CN209448026 U CN 209448026U
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 27
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Abstract
The utility model discloses the temperature control frequencies based on water to select wave-absorber, belongs to stealthy field.Cross gap type metal layer (3) including the arrangement of upper layer container (1), middle aqueous layer (2), underlying substrate (4) and the underlying substrate (4) upper surface period.The upper layer container keeps structure consistent with the cross gap type metal layer (3) that underlying substrate upper surface is arranged, and the two constitutes closed structure；The middle aqueous layer is then filled in the closed structure.The utility model constructs suction wave/wave transparent integral structure, and meet impedance matching condition, reaches the small performance indicator of transmission window Insertion Loss by combining frequency-selective surfaces with this electromagnetism wave height lossy medium of water.The utility model is regulated and controled using the dispersion characteristics of water as Research foundation by the temperature to water, and the hot tunability energy of electro-magnetic wave absorption frequency band is obtained.
Description
Technical field
The utility model relates to a kind of, and the temperature control frequency based on water selects wave-absorber, is a kind of high loss Jie specifically
The adjustable type frequency of matter composition selects wave-absorber, belongs to stealth technology field.
Background technique
With the development and progress of stealth technology, radar antenna system and various radio frequencies on stealthy aircraft platform are passed
Sensor becomes the main contributions source of radar cross section (RCS), and stealth technology extremely closes the Stealth Fighter of aircraft entirety
It is important.But front end of the radar antenna as information exchange, it is necessary to assure itself normal transceiving electromagnetic wave cannot be applied directly
Stealthy Technology coats the methods of radar absorbing to realize its stealth technology.And currently, use both at home and abroad is most wide
General stealth technology is frequency-selective surfaces (FSS) technology.
FSS is the patch or gap array of a kind of periodic arrangement, generally lossless structure, it and electromagnetic wave phase interaction
With the filter responses such as band logical, band resistance can be shown, it is a spatial filter for its essence, is widely used in stealthy thunder
Up in the design of antenna house, for reducing the RCS of system.Antenna house wherein based on bandpass-type FSS design, often through conformal
The reflection of electromagnetic wave of out-of-band transmission to other directions is reduced back scattering by technology；This often leads to the contracting of target mono- static RCS
Subtract, and cannot effectively reduce dual station RCS, really stealthy purpose is not achieved.In order to improve this disadvantage, the reflection outside band is reduced
The concept of characteristic, electromagnetism Meta Materials wave-absorber is introduced into the design of antenna house, forms the wave-absorber with frequency selective characteristic.
This kind absorbs and the periodic structure transparent to certain frequency bands certain frequency bands, is referred to as the wave-absorber for having transmission window.It is this
Frequency selection wave-absorber realizes the transparent and stealthy dual function of frequency band, therefore has broad application prospects.
With the continuous development of the prior art, the outer absorption-type electromagnetism metamaterial frequency selection structure of tunable band is studied for inhaling
There is higher practical value for the application such as wave, stealthy and polarization conversion, it is also the following electromagnetism supernormal medium frequency choosing
Select an important hot spot of wave-absorber research.Traditional frequency selection wave-absorber is mostly more with resistance element or high impedance surface etc.
Layer labyrinth realizes suction wave/wave transparent integrated design, and traditional tunable frequency selection wave-absorber is more to carry
Based on pin diode, but bring the problems such as structure is complicated, difficulty of processing is big, cabling is cumbersome.Therefore, the utility model passes through ground
Most commonly used resource is distributed on ball --- water provides a kind of tunable frequency selection wave-absorber of high lossy medium composition；Relatively
For traditional structure, save the cost, prepares convenient and simple structure, realizes electromagnetism more uniquely to a greater degree
The tunability energy of wave absorption band.
Utility model content
Purpose of utility model: being directed to above-mentioned background technique, the utility model be intended to provide it is a kind of it is novel, electromagnetic performance is excellent
Tunable type frequency select wave-absorber, overcome above-mentioned problems of the prior art.
In order to solve the above-mentioned technical problem, the utility model devises the selection wave-absorber of the temperature control frequency based on water, described
Cellular construction includes the ten of upper layer container 1, middle aqueous layer 2, underlying substrate 4 and the arrangement of 4 upper surface period of the underlying substrate
Word slot type metal layer 3；The upper layer container 1 and the cross gap type metal layer 3 of arrangement keep structural integrity, while upper layer
The prominent cross partition in the lower surface of container 1, extends at cross gap type metal layer 3, and then constitute closed structure, described
Middle aqueous layer 2 is then filled in the closed structure.
The utility model carries out horizontal, longitudinal periodic arrangement by inhaling wave to the frequency selection based on water, guarantees
It is connected to everywhere inside the middle aqueous layer 2 of the cellular construction, more properly utilizes the flow behavior of water；Simultaneously as closed
The shape of structure, middle aqueous layer 2 are scattered in four rectangular blocks such as upper left, upper right, lower-left, bottom right by centrality in filling；
Each rectangular block is connected with the rectangular block in adjacent three cellular constructions, constitutes high loss resonant cavity, realizes
Electromagnetic wave wide-band absorbent properties based on water.
The cross gap type metal layer 3 that the utility model is etched by underlying substrate 4 and its front surface realizes frequency choosing
The function of selecting: meeting the loss-free transmission of certain special frequency channel, to generate low-loss transmission window；But the frequency range outside to passband
Play the role of metal backing, so that incident electromagnetic energy is preferably lost by the water with electromagnetism wave height drain performance
Fall, and then constructs suction wave/wave transparent integrated structure design.
The utility model has the beneficial effects that:
(1), the utility model passes through the high drain performance of water, provides a kind of tunable type frequency of multilayer dielectricity composition
Select wave-absorber；For the lumps components such as traditional frequency selection wave-absorber loading resistor, inductance, the utility model
Viewpoint is novel, great innovation and structure is more simple, prepares more convenient；
(2), the utility model is by combining water with frequency-selective surfaces, in the premise for guaranteeing good impedance match
Under, by adjusting structural parameters, the reflection of incidence wave is reduced, realizes the suction wave/wave transparent integrated structure design haveing excellent performance；
(3), the utility model is showed by the dispersion characteristics of water when coolant-temperature gage (0 DEG C~100 DEG C) changes
The uniquely electromagnetic performance of " passband is constant, and it is adjustable to inhale wavestrip ", is more bonded in stealthy system " intelligence " selection.
(4), the utility model meets wide-angle performance, for TE, TM electromagnetic wave of the oblique incidence within the scope of 0 °~45 °,
It inhales the suction wave rate that wave frequency section is able to maintain 80%, i.e. S11、S21Respectively less than -10dB；Its passband frequency range still keeps good transmittance
Energy；
Detailed description of the invention
Fig. 1 is the temperature control frequency selection wave-absorber periodic structure schematic three dimensional views that the utility model is designed based on water；
Fig. 2 is the structural side view of temperature control frequency selection wave-absorber one unit of the utility model based on water；
Fig. 3 is the layered structure schematic diagram of temperature control frequency selection one unit of wave-absorber of the utility model based on water.
Fig. 4 is wave transparent/suction wave profile of the utility model based on the temperature control frequency selection wave-absorber of water in room temperature.
Specific embodiment
The utility model is described in further detail with reference to the accompanying drawing.
Embodiment: with reference to Fig. 1-3 describe be respectively the utility model proposes frequency select wave-absorber periodic structure three
Tie up side view, the hierarchical diagram of schematic diagram and single structure.
As shown in Fig. 2, structure designed by the utility model is followed successively by underlying substrate 4 from the bottom up, table on underlying substrate
Cross gap type metal layer 3, middle aqueous layer 2 and the upper layer container 1 of face period arrangement.The Zhou Changwei 20mm of entire cellular construction,
Whole height is 5.218mm.Underlying substrate 4 uses the F4B medium material that relative dielectric constant is 0.001 for 2.65 loss angle tangents
Material, thickness is 0.5mm；The cross gap type metal layer 3 of the period arrangement is cross metal slit, with a thickness of
0.018mm, the width in cross gap are 3mm, length 18mm.Upper layer container 1 uses newest 3D printing technique, uses Jie
Electric constant is 2.88, and the epoxy phenolic resin printing consumables that loss angle tangent is 0.04 prints required central cross and engraves
Empty shape；While the airtightness in order to guarantee structure from bottom to up, the prominent cross partition in 1 lower surface of upper layer container extend to
At the surface of cross gap type metal layer 3, therefore the thickness of cross partition is the thickness of middle aqueous layer, and spacer width is
0.5mm.That fill in the closed structure of total composition is Water (Debye Model), and water chamber is with a thickness of 0.9mm.Such as
Shown in Fig. 4, be the utility model designed by structure electromagnetic parameter curve, inhale wave rate 80% or more frequency range be 8.33~
15.2GHz, the band limits of transmission window are 5.17~6.88GHz, and minimum insertion loss is 0.76dB；Used in wherein
Water (Debye Model) work is in room temperature (25 DEG C) and a normal atmosphere pressure.
The structure of frequency-selective surfaces is not limited to this in the utility model, can be designed to circular ring shape, side annular,
The slot types structure such as Jerusalem cross can also design the patch-types structure such as squarely, cross, can also design in pairs
Layer or multi-layer-coupled type frequency-selective surfaces.Medium substrate can use low-loss Rogers 5880 or low relative dielectric constant
Medium etc., upper layer container also not necessarily use photosensitive resin material, are also possible to class ABS material, nylon, glass fibre material
Material, as long as material electromagnetic consumable is higher, relative dielectric constant and thickness meet good impedance match.
The above-mentioned description to example is that the utility model can be understood and applied for the ease of those of ordinary skill in the art.
Person skilled in the art obviously readily can make various modifications, and General Principle application described herein to these
Into other embodiments without carrying out creative labor.Therefore, the utility model is not limited to embodiment here, this field
Technical staff's announcement according to the present utility model, the improvement made for the utility model and modification all should be in the utility model
Protection scope within.
Claims (3)
1. the temperature control frequency based on water selects wave-absorber, which is characterized in that including upper layer container (1), middle aqueous layer (2), lower layer
Substrate (4) and underlying substrate (4) upper surface period arrangement cross gap type metal layer (3)；The upper layer container (1) and arrangement
Cross gap type metal layer (3) keep structural integrity, the two constitute closed structure；The middle aqueous layer (2) is then filled in
In the closed structure, overall construction design realizes suction wave/wave transparent integration, while meeting impedance matching condition and transmissive window
Mouth low insertion loss requirement；The cellular construction keeps structure consistent from upper layer container (1) to cross gap type metal layer (3)
Property, central cross shape hollow out shape is presented, meets passband and inhales the position neighbouring relations of wavestrip.
2. the temperature control frequency according to claim 1 based on water selects wave-absorber, it is characterised in that: the middle aqueous layer
(2) it is filled between upper layer container (1) and cross gap type metal layer (3)；The electromagnetic property as specific to water, in coolant-temperature gage
When (0 DEG C~100 DEG C) change, frequency selection wave-absorber shows the electricity of uniquely " passband is constant, and it is adjustable to inhale wavestrip "
Magnetic property is more bonded in stealthy system " intelligence " selection.
3. the temperature control frequency according to claim 1 based on water selects wave-absorber, it is characterised in that: the cellular construction
The length and width P of upper layer container (1) is 20mm, and thickness h 1 is 3.8mm；The length and width M of the middle aqueous layer (2) is 20mm, thickness
H2 is 0.8mm, and the length of central cross type hollow out is 19mm, width 4mm；The thickness h 3 of the underlying substrate (4) is
0.5mm；The cross gap type metal layer (3) of underlying substrate (4) the front surface arrangement, gap width w is 3mm, and length l is
18mm；Due to the consistency of its cellular construction, the length of upper layer container (1) the central cross type hollow out is l, width w.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920050567.8U CN209448026U (en) | 2019-01-11 | 2019-01-11 | Temperature control frequency based on water selects wave-absorber |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920050567.8U CN209448026U (en) | 2019-01-11 | 2019-01-11 | Temperature control frequency based on water selects wave-absorber |
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| Publication Number | Publication Date |
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| CN209448026U true CN209448026U (en) | 2019-09-27 |
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| CN201920050567.8U Expired - Fee Related CN209448026U (en) | 2019-01-11 | 2019-01-11 | Temperature control frequency based on water selects wave-absorber |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109509989A (en) * | 2019-01-11 | 2019-03-22 | 南京航空航天大学 | A kind of heat adjustable frequency selection wave-absorber based on water |
| CN112086758A (en) * | 2020-09-14 | 2020-12-15 | 重庆大学 | Double-control broadband terahertz wave absorber based on Dirac semimetal and water |
| CN113346249A (en) * | 2021-06-10 | 2021-09-03 | 西安电子科技大学 | Water-based interlayer super-surface adjustable coherent wave absorber |
-
2019
- 2019-01-11 CN CN201920050567.8U patent/CN209448026U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109509989A (en) * | 2019-01-11 | 2019-03-22 | 南京航空航天大学 | A kind of heat adjustable frequency selection wave-absorber based on water |
| CN112086758A (en) * | 2020-09-14 | 2020-12-15 | 重庆大学 | Double-control broadband terahertz wave absorber based on Dirac semimetal and water |
| CN112086758B (en) * | 2020-09-14 | 2021-12-28 | 重庆大学 | Double-control broadband terahertz wave absorber based on Dirac semimetal and water |
| CN113346249A (en) * | 2021-06-10 | 2021-09-03 | 西安电子科技大学 | Water-based interlayer super-surface adjustable coherent wave absorber |
| CN113346249B (en) * | 2021-06-10 | 2022-07-12 | 西安电子科技大学 | Water-based interlayer super-surface adjustable coherent wave absorber |
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| CF01 | Termination of patent right due to non-payment of annual fee | ||
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Granted publication date: 20190927 |