CN204407519U - A kind of double frequency Meta Materials wave-absorber - Google Patents
A kind of double frequency Meta Materials wave-absorber Download PDFInfo
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- CN204407519U CN204407519U CN201520074184.6U CN201520074184U CN204407519U CN 204407519 U CN204407519 U CN 204407519U CN 201520074184 U CN201520074184 U CN 201520074184U CN 204407519 U CN204407519 U CN 204407519U
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Abstract
The utility model provides a kind of double frequency Meta Materials wave-absorber, by the underlying metal film set gradually from bottom to top, middle lossy medium layer and top-level metallic film composition, underlying metal film, bonded to each other between middle lossy medium layer and top-level metallic film, described underlying metal film is all-metal film, top-level metallic film comprises metal ring and forms with the metal Fang Huan being positioned at metal ring, the center of round metal Ring current distribution and metal side's Ring current distribution and middle lossy medium layer and the center of underlying metal film are point-blank, and four of metal Fang Huan angles are right against the mid point on four limits of middle lossy medium layer respectively.The Meta Materials wave-absorber that the utility model provides has high suction ripple rate, and polarize insensitive and wide-angle characteristic, and have two wave absorbed crest value points.
Description
Technical field
The utility model relates to a kind of Meta Materials wave-absorber, particularly relates to a kind of double frequency Meta Materials wave-absorber.
Background technology
Radar absorbing is that a class effectively can absorb incident electromagnetic wave, significantly reduces the functional material of target-echo intensity, significantly can reduce the RCS of target, thus improve its Stealth Fighter.Traditional radar absorbing also exists the shortcomings such as thick, heavy, poor stability, and application is limited by very large.
Meta Materials refers to some artificial composite structures with the extraordinary physical property not available for natural material or composite material.Meta Materials wave-absorber, also known as Meta Materials absorbent structure, as a kind of new artificial electromagnetic material, because having, structure is simple, ultra-thin, volume is little and inhale ripple rate advantages of higher, receives the extensive concern of scientific research personnel in recent years, and expands correlative study to it.From the electromagnetic coupled resonance characteristic of Landy in 2008 based on Meta Materials, propose first by electrical resonator, lossy medium and metal micro-strip line form there is the Meta Materials absorbent structure of perfect microwave absorbing property since, the research of Meta Materials absorbent structure achieves and develops fast.
At present, researcher has proposed a variety of Meta Materials absorbent structure, the such as Meta Materials absorbent structure of the insensitive absorbent structure of various polarization and wide-angle, but the working frequency range of these absorbent structures is limited in one-segment, but current microwave device is just towards the future development of multiband.Therefore, be necessary to design a kind of double frequency Meta Materials absorbent structure.
Summary of the invention
The purpose of this utility model is to provide a kind of double frequency Meta Materials wave-absorber with polarize insensitive and wide-angle characteristic working in two-band.
The purpose of this utility model is achieved in that by the underlying metal film set gradually from bottom to top, middle lossy medium layer and top-level metallic film composition, underlying metal film, bonded to each other between middle lossy medium layer and top-level metallic film, described underlying metal film is all-metal film, top-level metallic film comprises metal ring and forms with the metal Fang Huan being positioned at metal ring, the center of round metal Ring current distribution and metal side's Ring current distribution and middle lossy medium layer and the center of underlying metal film are point-blank, and four of metal Fang Huan angles are right against the mid point on four limits of middle lossy medium layer respectively.
The utility model also comprises some architectural features like this:
1. the material of underlying metal film, metal ring and metal Fang Huan is metallic copper, and middle lossy medium layer is FR4 medium, and dielectric constant is 4.4, and loss tangent is 0.02.
2. the length of underlying metal film is equal with width with the length of middle lossy medium layer respectively with width.
Compared with prior art, the beneficial effects of the utility model are: the top-level metallic film of the double frequency Meta Materials wave-absorber structure that (1) the utility model proposes is made up of two kinds of structures, metal Fang Huan and metal ring respectively, these two kinds of structures can produce two different electromagnetic resonance points, thus can realize the wave-absorbing effect of double frequency.(2) underlying metal film of the double frequency Meta Materials wave-absorber structure that the utility model proposes is all-metal construction, adopt this structure can ensure without Electromgnetically-transparent, the electromagnetic wave entering into wave-absorber inside is all lost under the effect of dielectric loss and ohmic loss.(3) the double frequency Meta Materials wave-absorber structure that the utility model proposes is symmetrical structure, can absorb the electromagnetic wave of any polarisation angles, also can absorb the electromagnetic wave of different polarization type simultaneously.(4) the double frequency Meta Materials wave-absorber structure that the utility model proposes has high feature of inhaling ripple rate, and for the electromagnetic wave of vertical incidence, the utility model all can reach more than 99% in the suction ripple rate of two working frequency points.(5) the double frequency Meta Materials wave-absorber structure that the utility model proposes has the characteristic of wide-angle, and when electromagnetic incident angle is increased to 50 degree, the utility model still can remain on more than 74% in the suction ripple rate of two working frequency points.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model;
Fig. 2 (A) is front view of the present utility model, and Fig. 2 (B) is end view of the present utility model;
Fig. 3 is the suction ripple rate schematic diagram of the utility model to TE, TM polarized electromagnetic wave of vertical incidence;
The suction ripple rate schematic diagram of Fig. 4 to be the utility model to oblique firing angle be TE, TM polarized electromagnetic wave of 20 °;
The suction ripple rate schematic diagram of Fig. 5 to be the utility model to oblique firing angle be TE, TM polarized electromagnetic wave of 40 °;
The suction ripple rate schematic diagram of Fig. 6 to be the utility model to oblique firing angle be TE, TM polarized electromagnetic wave of 50 °.
Embodiment
Below in conjunction with accompanying drawing and embodiment, the utility model is described in further detail.
Composition graphs 1, Fig. 2 (A) and Fig. 2 (B), the utility model is by the underlying metal film 1 set gradually from bottom to top, middle lossy medium layer 2 and top-level metallic film composition, underlying metal film 1, bonded to each other between middle lossy medium layer 2 and top-level metallic film, also namely underlying metal film 1 of the present utility model and top-level metallic film are attached at the both sides of middle lossy medium layer 2 respectively, described underlying metal film 1 is all-metal film, without engraved structure, top-level metallic film comprises metal ring 3 and forms with the metal side's ring 4 being positioned at metal ring 3, the center of the center of metal ring 3 and the center of metal side's ring 4 and middle lossy medium layer 2 and the center of underlying metal film 1 are point-blank, and four of metal side's ring 4 angles are right against the mid point on four limits of middle lossy medium layer 3 respectively.Also namely top-level metallic film of the present utility model comprises metal ring 3 and metal side's ring 4 two kinds of structures, metal side's ring 4 is positioned at the inside of metal ring 3, both central points are at same position, and central point is just in time in the center of cellular construction, the comparatively middle lossy medium layer 2 of metal side's ring 4 and underlying metal film 1, have rotated 45 degree, the corner of metal side's ring 4 is on horizontal line and vertical curve respectively, and alternatively four angles of metal side's ring 4 are right against the mid point on four limits of middle lossy medium layer 2 respectively.These two kinds different structures (metal ring 3 and metal side's ring 4) can produce two electromagnetic resonance points, thus obtain the effect that double frequency-band inhales ripple.Meanwhile, the utility model is symmetrical structure, can absorb the electromagnetic wave of any polarisation angles.
The material of underlying metal film 1, metal ring 3 and metal side's ring 4 is metallic coppers, and middle lossy medium layer 2 is FR4 media, and dielectric constant is 4.4, and loss tangent is 0.02, is of a size of 10.25mm*10.25mm*0.61mm.The length of underlying metal film 1 and width are equal with width with the length of middle lossy medium layer 2 respectively.Specifically, underlying metal film 1 of the present utility model, metal ring 3 and metal Fang Huan adopt lithographic technique to be etched in the both sides up and down of middle lossy medium layer 2, also namely on underlying metal film 1, middle lossy medium layer 2 is had, middle lossy medium layer is pasted with metal ring 3 and metal side's ring 4, the internal diameter of metal ring 3 is 4.05mm, external diameter is 4.5mm, and the length of side of metal side's ring 4 is 4mm, and width is 1.05mm.And the structure of double frequency Meta Materials wave-absorber described in the utility model is a wave-absorber cellular construction, re-uses after can carrying out permutation and combination as requested.
Fig. 3 to Fig. 6 is the suction ripple rate curve figure of double frequency Meta Materials wave-absorber provided by the utility model, can find out that from three figure the double frequency Meta Materials wave-absorber that the utility model provides all reaches more than 99% in the suction ripple rate of 6.3GHz and 13.01GHz two frequency to TE, TM polarized wave, simultaneously when incident angle is increased to 50 degree, inhale ripple rate and still remain on more than 74%.
Claims (3)
1. a double frequency Meta Materials wave-absorber, by the underlying metal film set gradually from bottom to top, middle lossy medium layer and top-level metallic film composition, underlying metal film, bonded to each other between middle lossy medium layer and top-level metallic film, it is characterized in that: described underlying metal film is all-metal film, top-level metallic film comprises metal ring and forms with the metal Fang Huan being positioned at metal ring, the center of round metal Ring current distribution and metal side's Ring current distribution and middle lossy medium layer and the center of underlying metal film are point-blank, and four of metal Fang Huan angles are right against the mid point on four limits of middle lossy medium layer respectively.
2. a kind of double frequency Meta Materials wave-absorber according to claim 1, it is characterized in that: the material of underlying metal film, metal ring and metal Fang Huan is metallic copper, middle lossy medium layer is FR4 medium, and dielectric constant is 4.4, and loss tangent is 0.02.
3. a kind of double frequency Meta Materials wave-absorber according to claim 1 and 2, is characterized in that: the length of underlying metal film and width are equal with width with the length of middle lossy medium layer respectively.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201520074184.6U CN204407519U (en) | 2015-02-02 | 2015-02-02 | A kind of double frequency Meta Materials wave-absorber |
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| CN201520074184.6U CN204407519U (en) | 2015-02-02 | 2015-02-02 | A kind of double frequency Meta Materials wave-absorber |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104638382A (en) * | 2015-02-02 | 2015-05-20 | 哈尔滨工程大学 | Dual-frequency metamaterial wave absorber |
| CN105071049A (en) * | 2015-09-01 | 2015-11-18 | 哈尔滨工程大学 | Bidirectional meta-material absorber |
| CN105811118A (en) * | 2016-03-16 | 2016-07-27 | 深圳光启高等理工研究院 | Antenna |
| CN108732748A (en) * | 2018-06-04 | 2018-11-02 | 哈尔滨工业大学 | Mostly band Meta Materials absorber design method based on enhancing high order resonance mould absorptivity |
| CN109273863A (en) * | 2017-07-18 | 2019-01-25 | 中国航空工业集团公司济南特种结构研究所 | A kind of three frequency absorbent structure of Meta Materials based on EMR electromagnetic resonance |
-
2015
- 2015-02-02 CN CN201520074184.6U patent/CN204407519U/en not_active Withdrawn - After Issue
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104638382A (en) * | 2015-02-02 | 2015-05-20 | 哈尔滨工程大学 | Dual-frequency metamaterial wave absorber |
| CN104638382B (en) * | 2015-02-02 | 2017-10-31 | 哈尔滨工程大学 | A kind of double frequency Meta Materials wave-absorber |
| CN105071049A (en) * | 2015-09-01 | 2015-11-18 | 哈尔滨工程大学 | Bidirectional meta-material absorber |
| CN105811118A (en) * | 2016-03-16 | 2016-07-27 | 深圳光启高等理工研究院 | Antenna |
| CN105811118B (en) * | 2016-03-16 | 2019-08-20 | 深圳光启高等理工研究院 | A kind of antenna |
| US10784574B2 (en) | 2016-03-16 | 2020-09-22 | Kuang-Chi Institute Of Advanced Technology | Antenna |
| CN109273863A (en) * | 2017-07-18 | 2019-01-25 | 中国航空工业集团公司济南特种结构研究所 | A kind of three frequency absorbent structure of Meta Materials based on EMR electromagnetic resonance |
| CN108732748A (en) * | 2018-06-04 | 2018-11-02 | 哈尔滨工业大学 | Mostly band Meta Materials absorber design method based on enhancing high order resonance mould absorptivity |
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Legal Events
| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20150617 Effective date of abandoning: 20171031 |