CN103151619A - Broadband composite wave-absorbing structure based on frequency selective surfaces - Google Patents
Broadband composite wave-absorbing structure based on frequency selective surfaces Download PDFInfo
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Abstract
The invention relates to a broadband composite wave-absorbing structure based on frequency selective surfaces. The broadband composite wave-absorbing structure based on the frequency selective surfaces is composed of three layers of dielectric materials and two layers of frequency selective surfaces. As shown in the picture, blank parts represent dielectric layers, dash parts represent the frequency selective surfaces. A first layer frequency selective surface is placed between a first dielectric layer and a second dielectric layer, and a second frequency selective surface is placed between the second dielectric layer and a third dielectric layer. The broadband composite wave-absorbing structure based on he frequency selective surfaces has a super broadband characteristic and good wave-absorbing effect.
Description
Technical field
The present invention relates to a kind of composite wave-absorbing structure that comprises frequency-selective surfaces, this structure has bandwidth, inhales the strong characteristics of ripple.
Background technology
Frequency-selective surfaces is a kind of two-dimensionally periodic structure, has certain frequency selective characteristic for the electromagnetic wave of incident.The application of frequency-selective surfaces is very extensive, especially along with the development of artificial electromagnetic medium technology, frequency-selective surfaces is combined with absorbing material, thereby can realize more easily that the impedance matching condition improves the suction ripple usefulness of absorbing material.But along with the progress of artificial electromagnetic medium technology, composite wave-suction material is light except requiring, thin, also require to inhale the ripple frequency band wide as far as possible, study therefore that a kind of to have a wide band frequency-selective surfaces composite construction significant.
Summary of the invention
For solving the deficiency on prior art, the present invention proposes a kind of wide band composite wave-absorbing structure that has.It is by the following technical solutions:
The composite wave-absorbing structure is comprised of three layers of dielectric layer and the two-layer frequency-selective surfaces be close to, and wherein two-layer frequency-selective surfaces is embedded in respectively between three layers of dielectric layer.The ground floor frequency-selective surfaces is between ground floor medium and second layer medium, and second layer frequency-selective surfaces is between second layer medium and the 3rd layer of medium.The ground floor frequency-selective surfaces is band flow-through frequency-selective surfaces, and second layer frequency-selective surfaces is band resistance type frequency-selective surfaces, and second layer medium is the magnetic loss material, and the 3rd layer of medium is the dielectric loss material.
Further, the thickness of ground floor medium is 0.1mm to 4.6mm.
The present invention utilizes the design principle of impedance matching rule and frequency-selective surfaces, by compound multilayered medium material and Multilayer Frequency-Selective Surfaces, reach and widens bandwidth, inhales the strong purpose of ripple.
Description of drawings
Fig. 1 is composite wave-absorbing structure side view
Fig. 2 (a) is the logical frequency-selective surfaces structural representation of ring belt
Fig. 2 (b) annulus cell size schematic diagram
Fig. 3 (a) side of being endless belt resistance frequency-selective surfaces structural representation
The square ring element size of Fig. 3 (b) schematic diagram
Fig. 4 (a) is the logical frequency-selective surfaces structural representations of four leg loading unit bands
Fig. 4 (b) is four leg loading unit size schematic diagrames
Fig. 5 (a) is three leg loading unit band resistance frequency-selective surfaces structural representations
Fig. 5 (b) is three leg loading unit size schematic diagrames
Fig. 6 ~ 8 are the composite construction test result of Fang Huan and annulus for frequency-selective surfaces
Fig. 9 is that frequency-selective surfaces is the composite construction test result of four leg loading units and three leg loading units
Embodiment
1. the composite wave-absorbing structure is comprised of three layers of dielectric layer and the two-layer frequency-selective surfaces be close to, as shown in Figure 1.It is 1.07 that the ground floor dielectric material can be selected dielectric constant, and loss is 0 material, and thickness is 0.1mm; It is 5 that second layer dielectric material can be selected magnetic permeability, and magnetic loss angle just is being cut to 0.5 magnetic loss material, and thickness of dielectric layers is 2mm; It is 5 that the 3rd layer of dielectric material can be selected dielectric constant, and dielectric loss angle tangent is 0.5 dielectric loss material, and thickness is 2mm.The ground floor frequency-selective surfaces is selected ring belt flow-through frequency-selective surfaces, as shown in Fig. 2 (a).Total transmissivity can occur at a certain frequency range electromagnetic wave in band flow-through frequency-selective surfaces.As shown in Fig. 2 (b), outer ring diameter R
1Be 5mm, interior ring diameter R
2Be 4.2mm, the black region between outer toroid and interior annulus represents metal cladding, and the passband frequency range of this frequency-selective surfaces is 8GHz to 15GHz.The second layer frequency-selective surfaces side of selecting endless belt resistance type frequency-selective surfaces is as shown in Fig. 3 (a).Total reflection can occur at a certain frequency range electromagnetic wave in band resistance type frequency-selective surfaces.As shown in Fig. 3 (b), the ring length of side a of foreign side
1Be 9.2mm, interior side's ring length of side a
2Be 9.1mm, the black region between foreign side's ring and interior Fang Huan represents metal cladding, and the stopband frequency range of this frequency-selective surfaces is 7GHz to 10GHz.Frequency-selective surfaces is all square arrangement, and the arrangement cycle is 10mm.The test compound structure is inhaled ripple usefulness as shown in Figure 6, and this composite construction is inhaled in 8.1GHz to 17.3GHz ultrabroad band scope more than ripple usefulness all reaches 10dB as seen from the figure, has shown wave-absorbing effect and super broadband properties preferably.
2. the composite wave-absorbing structure is comprised of three layers of dielectric layer and the two-layer frequency-selective surfaces be close to, as shown in Figure 1.It is 1.07 that the ground floor dielectric material can be selected dielectric constant, and loss is 0 material, and thickness is 2mm; It is 5 that second layer dielectric material can be selected magnetic permeability, and magnetic loss angle just is being cut to 0.5 magnetic loss material, and thickness of dielectric layers is 2mm; It is 5 that the 3rd layer of dielectric material can be selected dielectric constant, and dielectric loss angle tangent is 0.5 dielectric loss material, and thickness is 2mm.The ground floor frequency-selective surfaces is selected ring belt flow-through frequency-selective surfaces, as shown in Fig. 2 (a).Total transmissivity can occur at a certain frequency range electromagnetic wave in band flow-through frequency-selective surfaces.As shown in Fig. 2 (b), outer ring diameter R
1Be 5mm, interior ring diameter R
2Be 4.2mm, the black region between outer toroid and interior annulus represents metal cladding, and the passband frequency range of this frequency-selective surfaces is 8GHz to 15GHz.The second layer frequency-selective surfaces side of selecting endless belt resistance type frequency-selective surfaces is as shown in Fig. 3 (a).Total reflection can occur at a certain frequency range electromagnetic wave in band resistance type frequency-selective surfaces.As shown in Fig. 3 (b), the ring length of side a of foreign side
1Be 9.2mm, interior side's ring length of side a
2Be 9.1mm, the black region between foreign side's ring and interior Fang Huan represents metal cladding, and the stopband frequency range of this frequency-selective surfaces is 7GHz to 10GHz.Frequency-selective surfaces is all square arrangement, and the arrangement cycle is 10mm.The test compound structure is inhaled ripple usefulness as shown in Figure 7, and this composite construction is inhaled in 8GHz to 16GHz ultrabroad band scope more than ripple usefulness all reaches 10dB as seen from the figure, has shown wave-absorbing effect and super broadband properties preferably.
3. the composite wave-absorbing structure is comprised of three layers of dielectric layer and the two-layer frequency-selective surfaces be close to, as shown in Figure 1.It is 1.07 that the ground floor dielectric material can be selected dielectric constant, and loss is 0 material, and thickness is 4.6mm; It is 5 that second layer dielectric material can be selected magnetic permeability, and magnetic loss angle just is being cut to 0.5 magnetic loss material, and thickness of dielectric layers is 2mm; It is 5 that the 3rd layer of dielectric material can be selected dielectric constant, and dielectric loss angle tangent is 0.5 dielectric loss material, and thickness is 2mm.The ground floor frequency-selective surfaces is selected ring belt flow-through frequency-selective surfaces, as shown in Fig. 2 (a).Total transmissivity can occur at a certain frequency range electromagnetic wave in band flow-through frequency-selective surfaces.As shown in Fig. 2 (b), outer ring diameter R
1Be 5mm, interior ring diameter R
2Be 4.2mm, the black region between outer toroid and interior annulus represents metal cladding, and the passband frequency range of this frequency-selective surfaces is 8GHz to 15GHz.The second layer frequency-selective surfaces side of selecting endless belt resistance type frequency-selective surfaces is as shown in Fig. 3 (a).Total reflection can occur at a certain frequency range electromagnetic wave in band resistance type frequency-selective surfaces.As shown in Fig. 3 (b), the ring length of side a of foreign side
1Be 9.2mm, interior side's ring length of side a
2Be 9.1mm, the black region between foreign side's ring and interior Fang Huan represents metal cladding, and the stopband frequency range of this frequency-selective surfaces is 7GHz to 10GHz.Frequency-selective surfaces is all square arrangement, and the arrangement cycle is 10mm.The test compound structure is inhaled ripple usefulness as shown in Figure 8, and this composite construction is inhaled in 7.6GHz to 15.9GHz ultrabroad band scope more than ripple usefulness all reaches 10dB as seen from the figure, has shown wave-absorbing effect and super broadband properties preferably.
The composite wave-absorbing structure is comprised of three layers of dielectric layer and the two-layer frequency-selective surfaces be close to, as shown in Figure 1.It is 1.07 that the ground floor dielectric material can be selected dielectric constant, and loss is 0 material, and thickness is 0.5mm; It is 5 that second layer dielectric material can be selected magnetic permeability, and magnetic loss angle just is being cut to 0.5 magnetic loss material, and thickness of dielectric layers is 2.5mm; It is 5 that the 3rd layer of dielectric material can be selected dielectric constant, and dielectric loss angle tangent is 0.5 dielectric loss material, and thickness is 2mm.The ground floor frequency-selective surfaces is selected four leg loading unit band flow-through frequency-selective surfaces, as shown in Fig. 4 (a).Total transmissivity can occur at a certain frequency range electromagnetic wave in band flow-through frequency-selective surfaces.As shown in Fig. 4 (b), outer shroud length of side m
1Be 9.8mm, outer ring width n
1Be 4mm, interior ring length of side m
2Be 5mm, interior ring width n
2Be 2mm, the black region between outer shroud and interior ring represents metal cladding, and the passband frequency range of this frequency-selective surfaces is 2.5GHz to 6.5GHz.Second layer frequency-selective surfaces is selected three leg loading unit band resistance type frequency-selective surfaces, as shown in Fig. 5 (a).Total reflection can occur at a certain frequency range electromagnetic wave in band resistance type frequency-selective surfaces.As shown in Fig. 5 (b), outer shroud brachium l
1Be 3.75mm, outer ring width b
1Be 2mm, interior ring brachium l
2Be 4.02mm, interior ring width b
2Be 1mm, the black region between foreign side's ring and interior Fang Huan represents metal cladding, and the stopband frequency range of this frequency-selective surfaces is 9.5GHz to 12.5GHz.Frequency-selective surfaces is all square arrangement, and the arrangement cycle is 10mm.The test compound structure is inhaled ripple usefulness as shown in Figure 9, and this composite construction is inhaled in 7.4GHz to 14.7GHz ultrabroad band scope more than ripple usefulness all reaches 10dB as seen from the figure, has shown wave-absorbing effect and super broadband properties preferably.
Claims (2)
1. wideband composite wave-absorbing structure based on frequency-selective surfaces, it is characterized in that: comprise three layers of dielectric layer and the two-layer frequency-selective surfaces be close to, wherein two-layer frequency-selective surfaces is embedded in respectively between three layers of dielectric layer; The ground floor frequency-selective surfaces is band flow-through frequency-selective surfaces, and second layer frequency-selective surfaces is band resistance type frequency-selective surfaces, and second layer medium is the magnetic loss material, and the 3rd layer of medium is the dielectric loss material.
2. the wideband composite wave-absorbing structure based on frequency-selective surfaces according to claim 1, it is characterized in that: the thickness of ground floor medium is 0.1mm to 4.6mm.
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Cited By (18)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103700951A (en) * | 2014-01-10 | 2014-04-02 | 中国科学院长春光学精密机械与物理研究所 | Composite media double-layer FSS (Frequency Selective Surface) structure SRR (Split Ring Resonator) metal layer ultra-light and thin wave-absorbing material |
| CN103715513A (en) * | 2014-01-17 | 2014-04-09 | 中国科学院光电技术研究所 | Broadband wave-absorbing material based on sub-wavelength metal structures |
| CN103943967A (en) * | 2014-03-26 | 2014-07-23 | 中国科学院长春光学精密机械与物理研究所 | Ultrathin metallic resistance composite multi-frequency wave-absorbing material |
| CN104051826A (en) * | 2014-06-12 | 2014-09-17 | 中国科学院长春光学精密机械与物理研究所 | Asymmetric double-layer band pass frequency selective surface |
| CN104167576A (en) * | 2014-08-27 | 2014-11-26 | 中国舰船研究设计中心 | Large-bandwidth and small-size periodic unit frequency selective surface structure |
| CN104409804A (en) * | 2014-12-03 | 2015-03-11 | 南京邮电大学 | Frequency selective surface with switching characteristic and design method |
| CN104682010A (en) * | 2013-12-03 | 2015-06-03 | 深圳光启创新技术有限公司 | Wave-transparent meta-material |
| CN106469858A (en) * | 2015-08-21 | 2017-03-01 | 深圳光启尖端技术有限责任公司 | A kind of wave-absorber structure |
| CN106856263A (en) * | 2015-12-08 | 2017-06-16 | 中国航空工业集团公司雷华电子技术研究所 | A kind of Meta Materials absorbent structure based on electromagnetic wave absorbing material and multilayer resistive film |
| CN107069234A (en) * | 2017-04-18 | 2017-08-18 | 中国电子科技集团公司第三十八研究所 | A kind of ultra wide band inhales ripple narrow band transmission electromagnetic bandgap structure and its application |
| CN107171043A (en) * | 2017-06-02 | 2017-09-15 | 南京航空航天大学 | Improve ultra-wide band connection frequency selection surface and its design method of angle stability |
| CN107464968A (en) * | 2016-06-02 | 2017-12-12 | 波音公司 | Compact frequency selective surface composite construction |
| CN107706537A (en) * | 2017-09-28 | 2018-02-16 | 东南大学 | Wave surface is inhaled based on the ultra-thin electromagnetic of graphene and frequency-selective surfaces |
| CN107946763A (en) * | 2017-12-26 | 2018-04-20 | 航天科工武汉磁电有限责任公司 | One kind inhales ripple wave transparent integration metamaterial antenna cover and its application |
| EP3329750A4 (en) * | 2015-07-30 | 2018-08-22 | Laird Technologies, Inc. | Frequency selective structures for emi mitigation |
| CN108493623A (en) * | 2018-04-23 | 2018-09-04 | 南京大学 | Sub-wavelength stratiform three-dimensional broadband absorbent structure based on loss-type frequency-selective surfaces |
| CN110718766A (en) * | 2019-10-23 | 2020-01-21 | 武汉灵动时代智能技术股份有限公司 | Active frequency selective surface structure |
| CN111799571A (en) * | 2020-07-22 | 2020-10-20 | 福州大学 | Narrowband terahertz nonreciprocal wave absorber based on sandwich structure |
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| CN104682010A (en) * | 2013-12-03 | 2015-06-03 | 深圳光启创新技术有限公司 | Wave-transparent meta-material |
| CN103700951A (en) * | 2014-01-10 | 2014-04-02 | 中国科学院长春光学精密机械与物理研究所 | Composite media double-layer FSS (Frequency Selective Surface) structure SRR (Split Ring Resonator) metal layer ultra-light and thin wave-absorbing material |
| CN103700951B (en) * | 2014-01-10 | 2015-12-02 | 中国科学院长春光学精密机械与物理研究所 | Complex media double-deck FSS structure SRR metal level ultra-thin absorbing material |
| CN103715513A (en) * | 2014-01-17 | 2014-04-09 | 中国科学院光电技术研究所 | Broadband wave-absorbing material based on sub-wavelength metal structures |
| CN103715513B (en) * | 2014-01-17 | 2016-03-30 | 中国科学院光电技术研究所 | A kind of wideband wave absorbing material based on second wavelength metallic structure |
| CN103943967B (en) * | 2014-03-26 | 2016-03-02 | 中国科学院长春光学精密机械与物理研究所 | Ultrathin metallic resistance composite multi-frequency absorbing material |
| CN103943967A (en) * | 2014-03-26 | 2014-07-23 | 中国科学院长春光学精密机械与物理研究所 | Ultrathin metallic resistance composite multi-frequency wave-absorbing material |
| CN104051826A (en) * | 2014-06-12 | 2014-09-17 | 中国科学院长春光学精密机械与物理研究所 | Asymmetric double-layer band pass frequency selective surface |
| CN104167576A (en) * | 2014-08-27 | 2014-11-26 | 中国舰船研究设计中心 | Large-bandwidth and small-size periodic unit frequency selective surface structure |
| CN104409804A (en) * | 2014-12-03 | 2015-03-11 | 南京邮电大学 | Frequency selective surface with switching characteristic and design method |
| CN104409804B (en) * | 2014-12-03 | 2017-06-09 | 南京邮电大学 | A kind of frequency-selective surfaces and method for designing with switching characteristic |
| EP3329750A4 (en) * | 2015-07-30 | 2018-08-22 | Laird Technologies, Inc. | Frequency selective structures for emi mitigation |
| CN106469858A (en) * | 2015-08-21 | 2017-03-01 | 深圳光启尖端技术有限责任公司 | A kind of wave-absorber structure |
| CN106469858B (en) * | 2015-08-21 | 2022-09-30 | 深圳光启尖端技术有限责任公司 | Wave absorber structure |
| CN106856263A (en) * | 2015-12-08 | 2017-06-16 | 中国航空工业集团公司雷华电子技术研究所 | A kind of Meta Materials absorbent structure based on electromagnetic wave absorbing material and multilayer resistive film |
| CN107464968A (en) * | 2016-06-02 | 2017-12-12 | 波音公司 | Compact frequency selective surface composite construction |
| CN107464968B (en) * | 2016-06-02 | 2020-09-18 | 波音公司 | Frequency selective surface composite structure |
| CN107069234A (en) * | 2017-04-18 | 2017-08-18 | 中国电子科技集团公司第三十八研究所 | A kind of ultra wide band inhales ripple narrow band transmission electromagnetic bandgap structure and its application |
| CN107171043A (en) * | 2017-06-02 | 2017-09-15 | 南京航空航天大学 | Improve ultra-wide band connection frequency selection surface and its design method of angle stability |
| CN107171043B (en) * | 2017-06-02 | 2020-01-21 | 南京航空航天大学 | Ultra-wide passband frequency selective surface with improved angular stability |
| CN107706537A (en) * | 2017-09-28 | 2018-02-16 | 东南大学 | Wave surface is inhaled based on the ultra-thin electromagnetic of graphene and frequency-selective surfaces |
| CN107946763B (en) * | 2017-12-26 | 2020-07-03 | 航天科工武汉磁电有限责任公司 | Wave-absorbing and wave-transmitting integrated metamaterial antenna housing and application thereof |
| CN107946763A (en) * | 2017-12-26 | 2018-04-20 | 航天科工武汉磁电有限责任公司 | One kind inhales ripple wave transparent integration metamaterial antenna cover and its application |
| CN108493623A (en) * | 2018-04-23 | 2018-09-04 | 南京大学 | Sub-wavelength stratiform three-dimensional broadband absorbent structure based on loss-type frequency-selective surfaces |
| CN108493623B (en) * | 2018-04-23 | 2020-11-24 | 南京大学 | Sub-wavelength layered three-dimensional broadband wave-absorbing structure based on loss type frequency selective surface |
| CN110718766A (en) * | 2019-10-23 | 2020-01-21 | 武汉灵动时代智能技术股份有限公司 | Active frequency selective surface structure |
| CN110718766B (en) * | 2019-10-23 | 2021-07-13 | 武汉灵动时代智能技术股份有限公司 | Active frequency selective surface structure |
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Application publication date: 20130612 |