CN106848501B - A kind of frequency selection composite material sandwich structure - Google Patents
A kind of frequency selection composite material sandwich structure Download PDFInfo
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- CN106848501B CN106848501B CN201710025172.8A CN201710025172A CN106848501B CN 106848501 B CN106848501 B CN 106848501B CN 201710025172 A CN201710025172 A CN 201710025172A CN 106848501 B CN106848501 B CN 106848501B
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- frequency
- composite material
- sandwich structure
- frequency selection
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01P—WAVEGUIDES; RESONATORS, LINES, OR OTHER DEVICES OF THE WAVEGUIDE TYPE
- H01P1/00—Auxiliary devices
- H01P1/20—Frequency-selective devices, e.g. filters
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Abstract
The present invention provides a kind of frequency selection composite material sandwich structure, the frequency selection composite material sandwich structure includes the first skinning layer, the foam sandwich laminate being set in first skinning layer, the frequency selection unit layer being set on the foam sandwich laminate and the second skinning layer being set on the frequency selection unit layer；The frequency selection unit layer includes the double-T shaped copper foil of muti-piece of carrier and the periodic arrangement formed on carrier, and every block of double-T shaped copper foil includes horizontal edge and two vertical edges being parallel to each other composition.Sandwich of the present invention is while guaranteeing high rigidity, the material that covering and core material use dielectric properties excellent, by the way that frequency selection unit layer resonance structure size, the parameter designing of shape, realization realizes that band logical, wave transmission rate are greater than 90% in 1.0~2.0GHZ, 8.0~18GHZ wavelength band.
Description
Technical field
The present invention relates to electromagnetic technology fields more particularly to a kind of frequency to select composite material sandwich structure.
Background technique
Frequency-selective surfaces are a kind of two-dimensionally periodic structures, there is certain frequency to select incident electromagnetic wave special
Property.Frequency-selective surfaces using very extensive, especially as the development of artificial electromagnetic media technology, by frequency-selective surfaces with
Electromagnetic wave transparent material combines, and can be more convenient to realize the transmission for specific frequency wave band, meet different needs.But with when
The development of generation technique, compound electromagnetic wave transparent material also require wave transparent frequency band as wide as possible other than needing to meet lightweight high-modulus, and
With interior high transmittance, Out-of-band rejection, therefore study a kind of compound with the frequency-selective surfaces penetrated in broadband, special frequency channel
Structure is of great significance.
Summary of the invention
That the object of the present invention is to provide a kind of structures is simple, be easily achieved and frequency that insertion loss is low selects composite material
Sandwich.
The purpose of the present invention is achieved through the following technical solutions:
A kind of frequency selection composite material sandwich structure, the frequency selection composite material sandwich structure includes the first covering
Layer, the foam sandwich laminate being set in first skinning layer, the frequency selection unit layer being set on the foam sandwich laminate
And it is set to the second skinning layer on the frequency selection unit layer；The frequency selection unit layer includes carrier and in carrier
The double-T shaped copper foil of the muti-piece of the periodic arrangement of upper formation, every block of double-T shaped copper foil include horizontal edge and two vertical edge groups being parallel to each other
At.
In above scheme, copper foil with a thickness of 6~20 μm.
In above scheme, the length of horizontal edge is 20mm, and the width of horizontal edge is 1mm, two copper of horizontal direction arranged adjacent
The distance between horizontal edge of foil is 1mm.
In above scheme, the length of every vertical edge is 19mm, and the distance between two vertical edges are 6mm in each copper foil, often
The distance between the bottom end of vertical edge and the horizontal edge of copper foil of vertical direction arranged adjacent are 1mm.
In above scheme, first skinning layer and the second skinning layer are that quartz glass fibre cloth enhancing cyanate ester resin is multiple
Condensation material, 0.1~0.4mm of thickness.
In above scheme, the dielectric constant of quartz glass fibre cloth enhancing cyanate ester resin composite material less than 3.6,
Dielectric loss is less than 0.006.
In above scheme, the material of the foam sandwich laminate is polymethacrylimide foam, with a thickness of 3~12mm,
Density is 40~100kg/m3。
In above scheme, less than 1.13, loss angle tangent is less than polymethacrylimide foam material dielectric constant
0.004。
In above scheme, the frequency selection composite material sandwich structure is in 1.0~2.2GHZ, 7.5~18GHZ wave band model
Interior realization band logical is enclosed, wave transmission rate is greater than 90%.
The invention has the benefit that sandwich of the present invention, while guaranteeing high rigidity, covering and core material are using Jie
The material of excellent electrical property, by frequency selection unit layer resonance structure size, the parameter designing of shape, realize 1.0~
Realize that band logical, wave transmission rate are greater than 90% or more in 2.2GHZ, 8~18GHZ wavelength band.
Detailed description of the invention
Fig. 1 is the schematic diagram of frequency selection composite material sandwich structure provided in an embodiment of the present invention.
Fig. 2 is the structural schematic diagram that frequency selection unit layer in Fig. 1 is four periods " double-T shaped ".
Fig. 3 is material wave transparent performance map prepared by embodiment 1.
Fig. 4 is material wave transparent performance map prepared by embodiment 2.
Fig. 5 is material wave transparent performance map prepared by embodiment 3.
Specific embodiment
It is further below in conjunction with specific embodiment for the contents of the present invention, technical solution and advantage is more clearly understood
Illustrate the present invention, these embodiments are merely to illustrate the present invention, and the present invention is not limited only to following embodiment.
Embodiment 1
As shown in Figure 1, it is a kind of frequency selection composite material sandwich structure provided in an embodiment of the present invention, frequency choosing
Selecting composite material sandwich structure includes the first skinning layer 1, and the foam sandwich laminate 2 being set in the first skinning layer 1 is set to foam
Frequency selection unit layer 3 on laminboard layer 2 and the second skinning layer 4 being set on frequency selection unit layer 3.
First skinning layer 1 and the second skinning layer 4 are that quartz glass fibre cloth enhances cyanate ester resin composite material, thickness
0.1~0.4mm.In the present embodiment, the first skinning layer 1 and the second skinning layer 4 are with a thickness of 0.2mm.First skinning layer 1 and second
The dielectric constant of skinning layer 4 is 3.5, and dielectric loss is 0.005.
The material of foam sandwich laminate 2 is Polymethacrylimide (PMI).Foam sandwich laminate 2 with a thickness of 3~12mm.
The dielectric constant of foam sandwich laminate 2 is no more than 1.13, and loss angle tangent is no more than 0.004.In the present embodiment, PMI bubble is selected
Foam, dielectric constant 1.10, dielectric loss 0.0038, with a thickness of 8mm.
Frequency selection unit layer 3 includes the double-T shaped copper foil of muti-piece of carrier and the periodic arrangement formed on carrier.Copper foil
With a thickness of 6~20 μm.In the present embodiment, with a thickness of 12 μm.As shown in Fig. 2, the present embodiment is " double T in four periods
Type ".Every block of double-T shaped copper foil includes horizontal edge and two vertical edges being parallel to each other composition.The length of horizontal edge is 20mm, the width of horizontal edge
Degree is 1mm, and the distance between horizontal edge of two copper foils of horizontal direction arranged adjacent is 1mm.The length of every vertical edge is 19mm,
The distance between two vertical edges are 6mm, the cross of the copper foil of the bottom end and vertical direction arranged adjacent of every vertical edge in each copper foil
The distance between side is 1mm.
The present embodiment also provides the production method of frequency selection composite material sandwich structure, specifically: first by first
The quartz glass fibre cloth enhancing cyanate ester resin prepreg and foam sandwich laminate 2 of skinning layer 1 bond together, then by frequency
Selecting unit layer 3 is bonded together by epoxy resin with foam sandwich laminate 2, finally by epoxy resin by the second skinning layer 4
Quartz glass fibre cloth enhancing cyanate ester resin prepreg and frequency selection unit layer 3 bond, obtain frequency selection composite wood
Expect sandwich.
The wave transparent performance of frequency selection composite material sandwich structure is shown in Fig. 3.The resonance frequency of this structural material is
2.76GHZ, 5.75GHZ, can effectively control the frequency bandwidth and wave transmission rate of incident electromagnetic wave, realize 1.0~
Realize that band logical, wave transmission rate are greater than 90% or more in 2.17GHZ, 7.67~18GHZ wavelength band.
Embodiment 2
The present embodiment is roughly the same with embodiment 1, the difference is that, the first skinning layer 1 and 4 thickness of the second skinning layer are about
For 0.1mm.Its wave transparent performance is shown in Fig. 4.The resonance frequency of this structural material is 2.88GHZ, 5.89GHZ, can effectively be controlled
The frequency bandwidth and wave transmission rate of incident electromagnetic wave, realization realize band in 1.0~2.26GHZ and 7.76~18GHZ wavelength band
Logical, wave transmission rate reaches 90% or more.
Embodiment 3
The present embodiment is roughly the same with embodiment 1, the difference is that, foam sandwich laminate 2 with a thickness of 4mm.Its wave transparent
Performance is shown in Fig. 5.The resonance frequency of this structural material is 2.8GHZ, 5.8GHZ, can effectively control the frequency band of incident electromagnetic wave
Band logical is realized in width and wave transmission rate, realization in 1.0~2.2GHZ and 7.8~18GHZ wavelength band, wave transmission rate reach 90% with
On.
Claims (9)
1. a kind of frequency selects composite material sandwich structure, which is characterized in that the frequency selects composite material sandwich structure packet
The first skinning layer is included, the foam sandwich laminate being set in first skinning layer, the frequency being set on the foam sandwich laminate
Selecting unit layer and the second skinning layer being set on the frequency selection unit layer；The frequency selection unit layer includes carrying
Body and the double-T shaped copper foil of the muti-piece of the periodic arrangement formed on carrier, every block of double-T shaped copper foil include horizontal edge and are parallel to each other
Two vertical edge compositions, wherein horizontal edge is connected by the horizontal sides of two T-type copper foils and is formed, and two to be parallel to each other vertical edge is located at horizontal edge
Side.
2. frequency as described in claim 1 selects composite material sandwich structure, which is characterized in that copper foil with a thickness of 6~20 μ
m。
3. frequency as described in claim 1 selects composite material sandwich structure, which is characterized in that the length of horizontal edge is 20mm,
The width of horizontal edge is 1mm, and the distance between horizontal edge of two copper foils of horizontal direction arranged adjacent is 1mm.
4. frequency as described in claim 1 selects composite material sandwich structure, which is characterized in that the length of every vertical edge is
19mm, the distance between two vertical edges are 6mm, the bottom end of every vertical edge and the copper foil of vertical direction arranged adjacent in each copper foil
The distance between horizontal edge be 1mm.
5. frequency as described in claim 1 selects composite material sandwich structure, which is characterized in that first skinning layer and the
Two skinning layer are that quartz glass fibre cloth enhances cyanate ester resin composite material, 0.1~0.4mm of thickness.
6. frequency as claimed in claim 5 selects composite material sandwich structure, which is characterized in that the quartz glass fibre cloth
Enhance the dielectric constant of cyanate ester resin composite material less than 3.6, dielectric loss is less than 0.006.
7. frequency as described in claim 1 selects composite material sandwich structure, which is characterized in that the material of the foam sandwich laminate
Material is polymethacrylimide foam, and with a thickness of 3~12mm, density is 40~100kg/m3。
8. frequency as claimed in claim 7 selects composite material sandwich structure, which is characterized in that Polymethacrylimide bubble
Foam material dielectric constant is less than 1.13, and loss angle tangent is less than 0.004.
9. frequency as described in claim 1 selects composite material sandwich structure, which is characterized in that the frequency selects composite wood
Material sandwich realizes that band logical, wave transmission rate are greater than 90% in 1.0~2.2GHZ, 8~18GHZ wavelength band.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710025172.8A CN106848501B (en) | 2017-01-13 | 2017-01-13 | A kind of frequency selection composite material sandwich structure |
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| CN201710025172.8A CN106848501B (en) | 2017-01-13 | 2017-01-13 | A kind of frequency selection composite material sandwich structure |
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| CN106848501A CN106848501A (en) | 2017-06-13 |
| CN106848501B true CN106848501B (en) | 2019-10-01 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109216930A (en) * | 2017-07-03 | 2019-01-15 | 上海东峻信息科技有限公司 | The high wave transparent frequency-selective surfaces construction design method of ultra-wide passband, wide-angle |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4121245A1 (en) * | 1991-06-27 | 1993-01-14 | Messerschmitt Boelkow Blohm | FREQUENCY SELECTIVE SURFACE STRUCTURE |
| CN103000995A (en) * | 2012-12-12 | 2013-03-27 | 洛阳双瑞橡塑科技有限公司 | Combined antenna housing |
| CN203589218U (en) * | 2013-11-26 | 2014-05-07 | 深圳光启创新技术有限公司 | Antenna |
| CN104763100A (en) * | 2015-03-06 | 2015-07-08 | 中国人民解放军国防科学技术大学 | A shelter large plate having a radar stealth function and a bulletproof function and a preparing method thereof |
| CN105789910A (en) * | 2016-04-19 | 2016-07-20 | 成都德杉科技有限公司 | Circular-polarized frequency selection surface structure |
| CN106275377A (en) * | 2016-08-30 | 2017-01-04 | 北京奇正数元科技股份有限公司 | The stressed-skin construction of a kind of small-sized unmanned plane and forming method thereof |
-
2017
- 2017-01-13 CN CN201710025172.8A patent/CN106848501B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4121245A1 (en) * | 1991-06-27 | 1993-01-14 | Messerschmitt Boelkow Blohm | FREQUENCY SELECTIVE SURFACE STRUCTURE |
| CN103000995A (en) * | 2012-12-12 | 2013-03-27 | 洛阳双瑞橡塑科技有限公司 | Combined antenna housing |
| CN203589218U (en) * | 2013-11-26 | 2014-05-07 | 深圳光启创新技术有限公司 | Antenna |
| CN104763100A (en) * | 2015-03-06 | 2015-07-08 | 中国人民解放军国防科学技术大学 | A shelter large plate having a radar stealth function and a bulletproof function and a preparing method thereof |
| CN105789910A (en) * | 2016-04-19 | 2016-07-20 | 成都德杉科技有限公司 | Circular-polarized frequency selection surface structure |
| CN106275377A (en) * | 2016-08-30 | 2017-01-04 | 北京奇正数元科技股份有限公司 | The stressed-skin construction of a kind of small-sized unmanned plane and forming method thereof |
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| CN106848501A (en) | 2017-06-13 |
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