CN115101944B - Single-passband metamaterial frequency selective surface wave absorbing structure - Google Patents
Single-passband metamaterial frequency selective surface wave absorbing structure Download PDFInfo
- Publication number
- CN115101944B CN115101944B CN202210745689.5A CN202210745689A CN115101944B CN 115101944 B CN115101944 B CN 115101944B CN 202210745689 A CN202210745689 A CN 202210745689A CN 115101944 B CN115101944 B CN 115101944B
- Authority
- CN
- China
- Prior art keywords
- patch
- length
- metal
- edge
- resonant
- 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.)
- Active
Links
- 239000002184 metal Substances 0.000 claims abstract description 132
- 229910052751 metal Inorganic materials 0.000 claims abstract description 132
- 239000000758 substrate Substances 0.000 claims abstract description 22
- WYTGDNHDOZPMIW-RCBQFDQVSA-N alstonine Natural products C1=CC2=C3C=CC=CC3=NC2=C2N1C[C@H]1[C@H](C)OC=C(C(=O)OC)[C@H]1C2 WYTGDNHDOZPMIW-RCBQFDQVSA-N 0.000 claims abstract description 18
- 239000011159 matrix material Substances 0.000 claims abstract description 10
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 13
- 229910052802 copper Inorganic materials 0.000 claims description 13
- 239000010949 copper Substances 0.000 claims description 13
- 238000010521 absorption reaction Methods 0.000 abstract description 15
- 238000010586 diagram Methods 0.000 description 11
- 230000009977 dual effect Effects 0.000 description 7
- 239000006096 absorbing agent Substances 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 3
- 239000000470 constituent Substances 0.000 description 2
- 230000010354 integration Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000000712 assembly Effects 0.000 description 1
- 238000000429 assembly Methods 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 230000010287 polarization Effects 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q17/00—Devices for absorbing waves radiated from an antenna; Combinations of such devices with active antenna elements or systems
- H01Q17/008—Devices for absorbing waves radiated from an antenna; Combinations of such devices with active antenna elements or systems with a particular shape
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q15/00—Devices for reflection, refraction, diffraction or polarisation of waves radiated from an antenna, e.g. quasi-optical devices
- H01Q15/0006—Devices acting selectively as reflecting surface, as diffracting or as refracting device, e.g. frequency filtering or angular spatial filtering devices
- H01Q15/0013—Devices acting selectively as reflecting surface, as diffracting or as refracting device, e.g. frequency filtering or angular spatial filtering devices said selective devices working as frequency-selective reflecting surfaces, e.g. FSS, dichroic plates, surfaces being partly transmissive and reflective
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q15/00—Devices for reflection, refraction, diffraction or polarisation of waves radiated from an antenna, e.g. quasi-optical devices
- H01Q15/0006—Devices acting selectively as reflecting surface, as diffracting or as refracting device, e.g. frequency filtering or angular spatial filtering devices
- H01Q15/0086—Devices acting selectively as reflecting surface, as diffracting or as refracting device, e.g. frequency filtering or angular spatial filtering devices said selective devices having materials with a synthesized negative refractive index, e.g. metamaterials or left-handed materials
Landscapes
- Control Of Motors That Do Not Use Commutators (AREA)
Abstract
The invention relates to a single-passband metamaterial frequency selective surface wave absorbing structure, which comprises the following components: the double-meander line resonant assembly and the metal stub resonant assembly are respectively arranged on two sides of the dielectric substrate; the metal stub resonant assembly comprises a plurality of metal patches which are arranged at intervals and are arranged in a matrix form; the double-serpentine resonant assembly comprises a plurality of double-serpentine resonant units arranged in a matrix form; each double meander line resonant cell includes a first resonant cell and a second resonant cell; the first resonance unit comprises a serpentine wire metal patch, a first spiral wire metal patch and a second spiral wire metal patch; the serpentine metal patch includes two vertical edge patches, two horizontal edge patches and a hypotenuse patch. The first spiral line metal patch and the second spiral line metal patch are centrally symmetrical; the second resonance unit and the first resonance unit have the same structure and are axisymmetric. By arranging the layout of the bevel edge, the spiral line and the like, the overall performance of the frequency selective surface is improved, namely the bandwidth and the wave absorption rate are improved.
Description
Technical Field
The invention relates to the technical field of microwaves, in particular to a novel metamaterial frequency selective surface structure with a single passband.
Background
The frequency selective surface (Frequency Selective Surface, FSS) is composed of a large number of regularly arranged metal unit resonant assemblies on the dielectric substrate or open-pore slits on the metal screen, wherein the shape, arrangement mode of the structural units and conductivity of the dielectric can influence the characteristic of structural frequency selection. The frequency selection surface has strong selection characteristics for electromagnetic waves with different working frequencies, different polarization modes and different incidence angles. Since the frequency selective surface has a good spatial filtering characteristic, it is widely used in the military and wireless communication fields.
Among them, the study of metamaterials (METAMATERIAL, MM) belongs to one branch of the frequency selective surface study. Metamaterials generally refer to artificially designed sub-wavelength composite electromagnetic structure materials, and have singular electromagnetic properties which are not available in the materials in nature, such as negative refraction, inverse Doppler, inverse Cherenkov, perfect lenses and the like.
The radar radio frequency stealth and electronic information system electromagnetic compatibility shielding system has the advantages of compact structure, light weight, ultra-thin structure, easiness in integration with electronic equipment and the like, becomes a research hotspot in the fields of radar radio frequency stealth and electronic information system electromagnetic compatibility and shielding, and has a relatively high application value. The working principle of the metamaterial absorber is that the working frequency band is arranged on a stop band of a frequency selection surface, so that the absorption, energy conversion and dissipation of electromagnetic signals are facilitated.
The traditional frequency selective surface, in particular to the frequency selective surface wave absorber, has certain defects such as large volume, large integration difficulty, relatively poor wave absorbing performance and the like, so that the working performance of the traditional frequency selective surface wave absorber is greatly limited.
Disclosure of Invention
The invention aims to provide a single-passband metamaterial frequency selective surface wave-absorbing structure so as to realize the high wave-absorbing performance of a larger passband of a specific frequency band.
In order to achieve the above object, the present invention provides the following solutions:
A single passband metamaterial frequency selective surface wave absorbing structure comprising: the double-meander line resonant assembly and the metal stub resonant assembly are respectively arranged on two sides of the dielectric substrate;
the metal stub resonant assembly comprises a plurality of metal patches which are arranged at intervals, and all the metal patches are arranged in a matrix form;
The double-serpentine resonant assembly comprises a plurality of double-serpentine resonant units, and all the double-serpentine resonant units are arranged in a matrix form; the double-meander line resonant units are in one-to-one correspondence with the metal patches and are respectively arranged on two sides of the dielectric substrate;
each double-meander line resonant cell includes a first resonant cell and a second resonant cell;
The first resonance unit comprises a serpentine wire metal patch, a first spiral wire metal patch and a second spiral wire metal patch;
the serpentine line metal patch comprises a first vertical edge patch, a second vertical edge patch, a first horizontal edge patch, a second horizontal edge patch and a bevel edge patch;
the first vertical edge patch is parallel to the second vertical edge patch; the first transverse edge patch and the second transverse edge patch are parallel;
One end of the first vertical edge patch is connected with the starting point of the first spiral line metal patch; the other end of the first vertical edge patch is connected with one end of the first horizontal edge patch, the other end of the first horizontal edge patch is connected with one end of the second horizontal edge patch through the bevel edge patch, and the other end of the second horizontal edge patch is connected with one end of the second vertical edge patch; the other end of the second vertical edge patch is connected with the starting point of the second spiral line metal patch;
The first spiral line metal patch is positioned between the first vertical edge patch and the bevel edge patch;
The second spiral line metal patch is positioned between the second vertical edge patch and the bevel edge patch;
the first spiral line metal patch and the second spiral line metal patch are centrosymmetric along the center of the bevel edge patch;
The second resonance unit and the first resonance unit have the same structure, the hypotenuse patch of the first resonance unit is intersected with the hypotenuse patch of the second resonance unit, and the second resonance unit and the first resonance unit are axisymmetric along a horizontal line where the intersection points of the two hypotenuse patches are located.
Optionally, the metal patch is a rectangular copper metal patch;
The length of the transverse edge of the rectangular copper metal patch is 2.6mm, and the length of the vertical edge of the rectangular copper metal patch is 11.8mm.
Optionally, defining a side away from the hypotenuse patch as a first side and a side near the hypotenuse patch as a second side;
the length of the first side of the first vertical edge patch is 1.7mm, and the length of the second side of the first vertical edge patch is 1.1mm;
the length of the first side of the second vertical edge patch is 1.7mm, and the length of the second side of the second vertical edge patch is 1.1mm;
The upper side length of the first transverse edge patch is 1.81mm, and the lower side length of the first transverse edge patch is 0.74mm;
the upper side length of the second transverse edge patch is 0.74mm, and the lower side length of the second transverse edge patch is 1.81mm;
The length of each of the two sides of the bevel edge patch is 3.5mm.
Optionally, the hypotenuse patch of the first resonant unit is tilted by 14 ° with respect to the vertical.
Optionally, the width of each edge patch of the serpentine wire metal patch is 0.6mm; the patch width of the first spiral line metal patch is 0.1mm.
Optionally, the first spiral wire metal patch is a square spiral wire metal patch.
Optionally, the first spiral wire metal patch is a square spiral wire metal patch wound around three circles and clockwise.
Optionally, the first spiral metal patch includes a first side, a second side, a third side, a fourth side, a fifth side, a sixth side, a seventh side, an eighth side and a ninth side, which are sequentially connected end to end; the starting point of the first edge is connected with the lower side of the first vertical edge;
The length of the lower side of the first edge is 0.7mm, and the length of the upper side of the first edge is 0.6mm;
The first side of the second edge is 0.85mm in length, and the second side of the second edge is 1.05mm in length;
The upper side length of the third side is 0.65mm, and the lower side length of the third side is 0.45mm;
the length of the first side of the fourth side is 0.9mm, and the length of the second side of the fourth side is 0.7mm;
the length of the upper side of the fifth side is 0.3mm, and the length of the lower side of the fifth side is 0.5mm;
The length of the first side of the sixth side is 0.55mm, and the length of the second side of the sixth side is 0.75mm;
the upper side length of the seventh side is 0.35mm, and the lower side length of the seventh side is 0.15mm;
the length of the first side of the eighth side is 0.6mm, and the length of the second side of the eighth side is 0.4mm;
the length of the upper side of the ninth side is 0.1mm, and the length of the lower side of the ninth side is 0.2mm.
Optionally, the method comprises the following steps: the thickness of the meander line metal patch was 0.0118mm.
Optionally, the dielectric substrate has a relative dielectric constant of 4.4, and the dielectric substrate has a thickness of 0.2mm.
According to the specific embodiment provided by the invention, the invention discloses the following technical effects:
The invention relates to a single-passband metamaterial frequency selective surface wave absorbing structure, which comprises the following components: the double-meander line resonant assembly and the metal stub resonant assembly are respectively arranged on two sides of the dielectric substrate; the metal stub resonant assembly comprises a plurality of metal patches which are arranged at intervals and are arranged in a matrix form; the double-serpentine resonant assembly comprises a plurality of double-serpentine resonant units arranged in a matrix form; the double-meander line resonance units are in one-to-one correspondence with the metal patches and are respectively arranged on two sides of the dielectric substrate; each double meander line resonant cell includes a first resonant cell and a second resonant cell; the first resonance unit comprises a serpentine wire metal patch, a first spiral wire metal patch and a second spiral wire metal patch; the serpentine line metal patch comprises a first vertical edge patch, a second vertical edge patch, a first horizontal edge patch, a second horizontal edge patch and a bevel edge patch; the first spiral line metal patch is positioned between the first vertical edge patch and the bevel edge patch; the first spiral line metal patch and the second spiral line metal patch are centrally symmetrical; the second resonance unit and the first resonance unit have the same structure and are axisymmetric. The invention generates resonance wave absorption in a single passband through the interaction of the double meander line resonance component, the discontinuous metal stub resonance component and the dielectric substrate, and improves the overall performance of the frequency selective surface, namely the bandwidth and the wave absorption rate through arranging the layout of bevel edges, spiral lines and the like.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings that are needed in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is an overall schematic diagram of a single passband metamaterial frequency selective surface structure as provided in embodiment 1 of the present invention;
FIG. 2 is a schematic diagram of the array and connection pattern of the discontinuous metal patch side provided in embodiment 1 of the present invention;
FIG. 3 is a schematic view of a single passband metamaterial frequency selective surface structure unit (back side) and dimensions as provided in example 1 of the present invention;
FIG. 4 is a schematic diagram of an array and connection of the two meander line resonant cell side provided in embodiment 1 of the present invention;
FIG. 5 is a first schematic diagram of a dual serpentine resonant unit according to embodiment 1 of the present invention;
Fig. 6 is a schematic structural diagram of a discontinuous rectangular metal patch according to embodiment 1 of the present invention;
FIG. 7 is a second schematic diagram of a dual serpentine resonant unit according to embodiment 1 of the present invention;
FIG. 8 is a third schematic diagram of a dual serpentine resonant unit according to embodiment 1 of the present invention;
Fig. 9 is a schematic diagram of a reflection characteristic S11 parameter curve of a single passband metamaterial frequency selective surface structure in each frequency band provided in embodiment 1 of the present invention;
fig. 10 is a schematic diagram of a transmission characteristic S21 parameter curve of a single-passband metamaterial frequency selective surface structure in each frequency band provided in embodiment 1 of the present invention;
Fig. 11 is a schematic diagram of a wave-absorbing characteristic parameter curve of a single-passband metamaterial frequency selective surface structure in each frequency band provided in embodiment 1 of the present invention.
Reference numerals:
1: a dual meander line resonant cell; 11: a serpentine wire metal patch; 12: a first helical wire metal patch; 13: a second helical wire metal patch; 2: a metal patch; 3: a dielectric substrate.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
The invention aims to provide a single-passband metamaterial frequency selective surface wave absorbing structure, which realizes a frequency selective function through a double-serpentine-line and discontinuous rectangular metal short line double-layer structure, and improves the overall performance (bandwidth and wave absorbing rate) of the frequency selective surface through the measures of arranging oblique edges, constructing spiral lines and the like.
In order that the above-recited objects, features and advantages of the present invention will become more readily apparent, a more particular description of the invention will be rendered by reference to the appended drawings and appended detailed description.
Example 1
As shown in fig. 1, the present embodiment provides a single passband metamaterial frequency selective surface wave absorbing structure, including: the dielectric substrate 3 and the double-meander line resonant assembly and the metal stub resonant assembly are respectively arranged on two sides of the dielectric substrate 3.
The dielectric substrate is an FR4 substrate, the relative dielectric constant of the dielectric substrate 3 is 4.4, and the thickness of the dielectric substrate 3 is 0.2mm.
As shown in fig. 2, the metal stub resonant assembly is a discontinuous metal stub resonant assembly, and includes a plurality of metal patches 2 arranged at intervals, where all the metal patches 2 are arranged in a matrix form and are discontinuously distributed; the rectangular metal patches are made of copper, the discontinuous rectangular metal patches comprise single discontinuous copper rectangular metal patches, and each metal patch 2 is arranged at the center of the corresponding frequency selective surface structure unit. The frequency selective surface structure unit comprises a double meander line resonant unit 1 and corresponding rectangular metal patches. The single-passband high-absorption metamaterial frequency selective surface wave-absorbing structure is composed of a plurality of periodically distributed frequency selective surface structure units. The metal patch 2 can also be applied with other types of metal according to actual requirements.
As shown in fig. 3, the length of the transverse side of the rectangular copper metal patch is 2.6mm, and the length of the vertical side of the rectangular copper metal patch is 11.8mm. The frequency selective surface structure unit size was 4.20mm by 12.00mm.
As shown in fig. 4, the dual meander line resonant assembly includes a plurality of dual meander line resonant cells 1, all of the dual meander line resonant cells 1 being arranged in a matrix form; the double meander line resonant unit 1 includes two meander line metal patches which are centrosymmetric and have four turns, and microstrip line copper metal patches which have narrow spiral lines arranged at both ends of the meander line metal patches. The double-meander line resonance units 1 are in one-to-one correspondence with the metal patches 2 and are respectively arranged on two sides of the dielectric substrate 3; as shown in fig. 5 and 6.
As shown in fig. 7 and 8, each of the double meander line resonant cells 1 includes a first resonant cell and a second resonant cell;
the first resonance unit comprises a meander line metal patch 11, a first spiral line metal patch 12 and a second spiral line metal patch 13;
The serpentine wire metal patch 11 includes a first vertical edge patch b 1, a second vertical edge patch b 2, a first lateral edge patch a 1, a second lateral edge patch a 2, and a hypotenuse patch c;
The first vertical edge patch b 1 is parallel to the second vertical edge patch b 2; the first transverse edge patch a 1 and the second transverse edge patch a 2 are parallel;
One end of the first vertical edge patch b 1 is connected with the starting point of the first spiral line metal patch 12; the other end of the first vertical edge patch b 1 is connected with one end of the first horizontal edge patch a 1, the other end of the first horizontal edge patch a 1 is connected with one end of the second horizontal edge patch a 2 through the inclined edge patch c, and the other end of the second horizontal edge patch a 2 is connected with one end of the second vertical edge patch b 2; the other end of the second vertical edge patch b 2 is connected with the starting point of the second spiral line metal patch 13;
Defining a side far from the bevel patch c as a first side and a side close to the bevel patch c as a second side;
the first side length of the first vertical edge patch b 1 is 1.7mm, and the second side length of the first vertical edge patch b 1 is 1.1mm;
the first side length of the second vertical edge patch b 2 is 1.7mm, and the second side length of the second vertical edge patch b 2 is 1.1mm;
the upper side length of the first transverse edge patch a 1 is 1.81mm, and the lower side length of the first transverse edge patch a 1 is 0.74mm;
the upper side length of the second transverse edge patch a 2 is 0.74mm, and the lower side length of the second transverse edge patch a 2 is 1.81mm;
The length of both sides of the bevel edge patch c is 3.5mm. The structural dimensions of the sides of the serpentine metal patch 11 may be adjusted according to actual requirements. The hypotenuse patch c of the first resonant unit is tilted by 14 ° with respect to the vertical. As shown in fig. 8, the angle of inclination of the hypotenuse of the first resonant unit with respect to the vertical direction is α 2, the angle of inclination of the hypotenuse of the second resonant unit with respect to the vertical direction is α 1,α1 and α 2 are both 14 °
The width of each edge patch of the serpentine wire metal patch 11 is 0.6mm (as in W 1 and W 2 in fig. 8); the thickness of the meander line metal patch 11 is 0.0118mm. The first helical wire metal patch 12 has a patch width of 0.1mm (as in W 3 to W 6 in fig. 8).
The first spiral wire metal patch 12 is a square spiral wire metal patch. Further, the first spiral wire metal patch 12 is a square spiral wire metal patch wound around three turns and clockwise. The first spiral metal patch 12 can adjust the shape of the spiral and the number of windings according to actual requirements.
The first spiral metal patch 12 includes a first side L1, a second side L2, a third side L3, a fourth side L4, a fifth side L5, a sixth side L6, a seventh side L7, an eighth side L8, and a ninth side L9, which are sequentially connected end to end; the starting point of the first edge L1 is connected with the lower side of the first vertical edge;
The lower side length of the first side L1 is 0.7mm, and the upper side length of the first side L1 is 0.6mm;
the length of the first side of the second side L2 is 0.85mm, and the length of the second side L2 is 1.05mm;
The upper side length of the third side L3 is 0.65mm, and the lower side length of the third side L3 is 0.45mm;
The length of the first side of the fourth side L4 is 0.9mm, and the length of the second side of the fourth side L4 is 0.7mm;
the upper side length of the fifth side L5 is 0.3mm, and the lower side length of the fifth side L5 is 0.5mm;
the length of the first side of the sixth side L6 is 0.55mm, and the length of the second side of the sixth side L6 is 0.75mm;
the upper side length of the seventh side L7 is 0.35mm, and the lower side length of the seventh side L7 is 0.15mm;
The length of the first side of the eighth side L8 is 0.6mm, and the length of the second side of the eighth side L8 is 0.4mm;
the length of the upper side of the ninth side L9 is 0.1mm, and the length of the lower side of the ninth side L9 is 0.2mm.
The dimensions of the respective constituent edge structures for the first helical wire metallic patch 12 may be adjusted according to practical requirements.
The first spiral metal patch 12 is located between the first vertical edge patch b1 and the bevel edge patch c;
the second spiral metal patch 13 is located between the second vertical edge patch b2 and the bevel edge patch c;
The first spiral metal patch 12 and the second spiral metal patch 13 are centrosymmetric along the center of the bevel patch c;
As shown in fig. 7, the dimensions for the 9 constituent edges of the second helical patch are as follows:
the upper side length of the first side m1 is 0.70mm, and the lower side length is 0.60mm;
The second side of the second side m2 has a second side length of 1.05mm and the first side has a length of 0.85mm;
The lower side of the third side m3 is 0.65mm in length, and the upper side is 0.45mm in length;
Fourth side m4 has a first side length of 0.90mm and a second side length of 0.70mm;
the upper side length of the fifth side m5 is 0.50mm, and the lower side length is 0.30mm;
The length of the second side of the sixth side m6 is 0.75mm, and the length of the first side is 0.55mm;
The length of the lower side of the seventh side m7 is 0.35mm, and the length of the upper side is 0.15mm;
Eighth side m8 has a first side length of 0.60mm and a second side length of 0.40mm
The length of the upper side of the ninth side m9 is 0.20mm, and the length of the lower side is 0.10mm.
The second resonance unit and the first resonance unit have the same structure, the bevel edge patch c of the first resonance unit and the bevel edge patch c of the second resonance unit intersect, and the second resonance unit and the first resonance unit structure are axisymmetric along a horizontal line (or a vertical line) where the intersection point of the two bevel edge patches c is located, that is, the second resonance unit and the first resonance unit structure are centrosymmetric with respect to the frequency selective surface structure unit. The meander line metal patches 11 of the first and second resonance units are meander line copper metal patches that are integrated. The serpentine wire metal patch and the spiral wire metal patch can be made of copper metal according to requirements, and other metals can be selected according to requirements.
In the present invention, the frequency selective surface structure unit size is 4.20mm×12.00mm, the double serpentine wire metal patch 11 size is 4.00mm×4.00mm, the rectangular metal patch size is 2.60mm×11.80mm, the adjacent frequency selective surface structure unit center horizontal direction distance e h is 4.20mm, and the adjacent frequency selective surface structure unit center vertical direction distance e v is 12.00mm.
FIG. 9 is a graph schematically showing reflection characteristics S11 of each frequency band of a single-passband high-absorption metamaterial frequency selective surface wave-absorbing structure, wherein the structure has an operating frequency band between 13.22GHz and 13.28GHz, reflection coefficients are smaller than-10 dB in the intervals, and reflection coefficients at 13.25GHz are-18.15 dB.
Fig. 10 is a schematic diagram of a transmission characteristic S21 curve of each frequency band of the single-passband high-absorption metamaterial frequency selective surface wave-absorbing structure provided by the invention, wherein the structure can have a working frequency band between 13.22GHz and 13.28GHz, and the transmission coefficient at 13.25GHz is-10.59 dB.
FIG. 11 is a graph showing the wave absorption curves of each frequency band of the single-passband high-absorption metamaterial frequency selective surface wave absorption structure, wherein the wave absorption of the structure reaches the maximum at a 13.25GHz frequency point, and the maximum wave absorption is 94.6%.
In the invention, the double meander line resonance component, the discontinuous metal stub resonance component and the dielectric substrate 3 generate stronger resonance with larger bandwidth when electromagnetic waves with specific wavelength pass, and convert larger part of electromagnetic waves into dissipated heat energy to form stronger absorption on the electromagnetic waves, thereby realizing that the frequency selective surface structure has larger wave absorption rate and working bandwidth relative to the similar level in the specific pass band, specifically comprising the following steps: the single-passband high-wave-absorbing-rate metamaterial frequency selective surface wave-absorbing structure has an operating frequency range from 13.22GHz to 13.28GHz, wherein the wave-absorbing capacity is strongest at the 13.25GHz position, the wave-absorbing rate reaches 94.6%, and the metamaterial frequency selective surface wave-absorbing structure has good wave-absorbing performance.
Under the action of TE polarized electromagnetic waves with specific wavelength, the double-meander line resonant assembly, the discontinuous rectangular metal stub resonant assembly and the dielectric substrate which are compactly arranged form resonance, and the incident electromagnetic waves are converted into heat energy and dissipated, so that stronger reflection and projection are not generated, and the electromagnetic waves are strongly absorbed. In the invention, the bevel edge and the spiral line are adopted to design the frequency selective surface structure with smaller size than the same line to generate larger wave absorption rate and larger working bandwidth, so that the performance of the frequency selective surface is effectively improved.
The principles and embodiments of the present invention have been described herein with reference to specific examples, the description of which is intended only to assist in understanding the methods of the present invention and the core ideas thereof; also, it is within the scope of the present invention to be modified by those of ordinary skill in the art in light of the present teachings. In view of the foregoing, this description should not be construed as limiting the invention.
Claims (10)
1. A single passband metamaterial frequency selective surface wave absorbing structure comprising: the double-meander line resonant assembly and the metal stub resonant assembly are respectively arranged on two sides of the dielectric substrate;
the metal stub resonant assembly comprises a plurality of metal patches which are arranged at intervals, and all the metal patches are arranged in a matrix form;
The double-meander line resonant assembly comprises a plurality of double-meander line resonant units, and all the double-meander line resonant units are arranged in a matrix form; the double-meander line resonant units are in one-to-one correspondence with the metal patches and are respectively arranged on two sides of the dielectric substrate;
each double-meander line resonant cell includes a first resonant cell and a second resonant cell;
The first resonance unit comprises a serpentine wire metal patch, a first spiral wire metal patch and a second spiral wire metal patch;
the serpentine line metal patch comprises a first vertical edge patch, a second vertical edge patch, a first horizontal edge patch, a second horizontal edge patch and a bevel edge patch;
the first vertical edge patch is parallel to the second vertical edge patch; the first transverse edge patch and the second transverse edge patch are parallel;
One end of the first vertical edge patch is connected with the starting point of the first spiral line metal patch; the other end of the first vertical edge patch is connected with one end of the first horizontal edge patch, the other end of the first horizontal edge patch is connected with one end of the second horizontal edge patch through the bevel edge patch, and the other end of the second horizontal edge patch is connected with one end of the second vertical edge patch; the other end of the second vertical edge patch is connected with the starting point of the second spiral line metal patch;
The first spiral line metal patch is positioned between the first vertical edge patch and the bevel edge patch;
The second spiral line metal patch is positioned between the second vertical edge patch and the bevel edge patch;
the first spiral line metal patch and the second spiral line metal patch are centrosymmetric along the center of the bevel edge patch;
The second resonance unit and the first resonance unit have the same structure, the hypotenuse patch of the first resonance unit is intersected with the hypotenuse patch of the second resonance unit, and the second resonance unit and the first resonance unit are axisymmetric along a horizontal line where the intersection points of the two hypotenuse patches are located.
2. The single pass band metamaterial frequency selective surface wave absorbing structure of claim 1, wherein the metal patch is a rectangular copper metal patch;
The length of the transverse edge of the rectangular copper metal patch is 2.6mm, and the length of the vertical edge of the rectangular copper metal patch is 11.8mm.
3. The single pass band metamaterial frequency selective surface absorbing structure of claim 1, wherein a side away from the hypotenuse patch is defined as a first side and a side near the hypotenuse patch is defined as a second side;
the length of the first side of the first vertical edge patch is 1.7mm, and the length of the second side of the first vertical edge patch is 1.1mm;
the length of the first side of the second vertical edge patch is 1.7mm, and the length of the second side of the second vertical edge patch is 1.1mm;
The upper side length of the first transverse edge patch is 1.81mm, and the lower side length of the first transverse edge patch is 0.74mm;
the upper side length of the second transverse edge patch is 0.74mm, and the lower side length of the second transverse edge patch is 1.81mm;
The length of each of the two sides of the bevel edge patch is 3.5mm.
4. The single pass band metamaterial frequency selective surface absorbing structure of claim 1, wherein the hypotenuse patch of the first resonant unit is tilted 14 ° relative to vertical.
5. The single pass band metamaterial frequency selective surface wave absorbing structure as defined in claim 1, wherein each edge patch of the meander line metal patch has a width of 0.6mm; the patch width of the first spiral line metal patch is 0.1mm.
6. The single pass band metamaterial frequency selective surface wave absorbing structure of claim 1, wherein the first helical wire metal patch is a square helical wire metal patch.
7. The single pass band metamaterial frequency selective surface wave absorbing structure as defined in claim 3, wherein the first helical wire metal patch is a square helical wire metal patch wound three turns and clockwise.
8. The single pass band metamaterial frequency selective surface wave absorbing structure according to claim 7, wherein the first spiral metal patch comprises a first side, a second side, a third side, a fourth side, a fifth side, a sixth side, a seventh side, an eighth side, and a ninth side connected end to end in sequence; the starting point of the first edge is connected with the lower side of the first vertical edge;
The length of the lower side of the first edge is 0.7mm, and the length of the upper side of the first edge is 0.6mm;
The first side of the second edge is 0.85mm in length, and the second side of the second edge is 1.05mm in length;
The upper side length of the third side is 0.65mm, and the lower side length of the third side is 0.45mm;
the length of the first side of the fourth side is 0.9mm, and the length of the second side of the fourth side is 0.7mm;
the length of the upper side of the fifth side is 0.3mm, and the length of the lower side of the fifth side is 0.5mm;
The length of the first side of the sixth side is 0.55mm, and the length of the second side of the sixth side is 0.75mm;
the upper side length of the seventh side is 0.35mm, and the lower side length of the seventh side is 0.15mm;
the length of the first side of the eighth side is 0.6mm, and the length of the second side of the eighth side is 0.4mm;
the length of the upper side of the ninth side is 0.1mm, and the length of the lower side of the ninth side is 0.2mm.
9. The single passband metamaterial frequency selective surface absorbing structure of claim 1, comprising: the thickness of the meander line metal patch was 0.0118mm.
10. The single pass band metamaterial frequency selective surface absorbing structure of claim 1, wherein the dielectric substrate has a relative permittivity of 4.4 and a thickness of 0.2mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210745689.5A CN115101944B (en) | 2022-06-28 | 2022-06-28 | Single-passband metamaterial frequency selective surface wave absorbing structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210745689.5A CN115101944B (en) | 2022-06-28 | 2022-06-28 | Single-passband metamaterial frequency selective surface wave absorbing structure |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN115101944A CN115101944A (en) | 2022-09-23 |
| CN115101944B true CN115101944B (en) | 2024-06-07 |
Family
ID=83295373
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210745689.5A Active CN115101944B (en) | 2022-06-28 | 2022-06-28 | Single-passband metamaterial frequency selective surface wave absorbing structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115101944B (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2012139370A1 (en) * | 2011-04-12 | 2012-10-18 | 深圳光启高等理工研究院 | An artificial microstructure and a magnetic resonance metamaterial which the artificial microstructure is used for |
| CN108539431A (en) * | 2018-03-23 | 2018-09-14 | 西安电子科技大学 | Passband embedded type frequency based on parallel LC resonators load selects wave-absorber |
| CN111048907A (en) * | 2020-01-12 | 2020-04-21 | 中国人民解放军国防科技大学 | Wave-absorbing and wave-transmitting integrated frequency selection surface with ultra-wide transparent wave band |
| CN214124131U (en) * | 2020-11-18 | 2021-09-03 | 南京邮电大学 | Metamaterial broadband wave absorber based on double-spiral structure |
-
2022
- 2022-06-28 CN CN202210745689.5A patent/CN115101944B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2012139370A1 (en) * | 2011-04-12 | 2012-10-18 | 深圳光启高等理工研究院 | An artificial microstructure and a magnetic resonance metamaterial which the artificial microstructure is used for |
| CN108539431A (en) * | 2018-03-23 | 2018-09-14 | 西安电子科技大学 | Passband embedded type frequency based on parallel LC resonators load selects wave-absorber |
| CN111048907A (en) * | 2020-01-12 | 2020-04-21 | 中国人民解放军国防科技大学 | Wave-absorbing and wave-transmitting integrated frequency selection surface with ultra-wide transparent wave band |
| CN214124131U (en) * | 2020-11-18 | 2021-09-03 | 南京邮电大学 | Metamaterial broadband wave absorber based on double-spiral structure |
Non-Patent Citations (2)
| Title |
|---|
| 具有极化选择特性的超材料频率选择表面的设计;吴翔;物理学报;20111115;全文 * |
| 有耗频率选择表面蜂窝吸波复合材料的电磁性能;陈育秋;材料研究学报;20180825;全文 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN115101944A (en) | 2022-09-23 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN108682952B (en) | Double-layer cascade dual-polarization broadband band-absorption type frequency selection surface | |
| Yu et al. | 3-D frequency-selective rasorber with wide upper absorption band | |
| CN107508017B (en) | Band-suction type broadband frequency selection structure and application thereof | |
| CN110504549B (en) | Graphene-based absorption-transmission integrated frequency selection surface | |
| CN112952400B (en) | Broadband wave-absorbing structure with high-transmittance wave-transmitting window | |
| CN106299628B (en) | Antenna and wireless router | |
| CN102570020B (en) | Ultra-wideband trapped wave antenna with good rectangular degree and controllable stop band bandwidth | |
| CN107404005B (en) | Novel high-selectivity frequency selective surface based on single-layer PCB process | |
| CN103490171A (en) | Composite wave-absorbing material with wide frequency bands | |
| CN207183542U (en) | High selectivity frequency-selective surfaces | |
| Yang et al. | Design method for low-profile, harmonic-suppressed filter-antennas using miniaturized-element frequency selective surfaces | |
| CN110265788B (en) | Novel two-three-dimensional combined dual-polarized band-pass radar wave absorber | |
| CN109742554B (en) | Double-frequency Ku waveband circularly polarized sensitive wave absorber | |
| CN110048237B (en) | Electrically adjustable X-waveband wave-absorbing material | |
| CN105098374A (en) | Electromagnetic wave absorption structure of ultra-wideband | |
| CN110600886A (en) | Multi-band broadband miniaturized frequency selective surface antenna | |
| CN115101944B (en) | Single-passband metamaterial frequency selective surface wave absorbing structure | |
| Sheng et al. | Design of frequency selective rasorber with high in-band transmission and wideband absorption properties | |
| Idrees et al. | A miniaturized polarization independent frequency selective surface with stepped profile for shielding applications | |
| CN113346250B (en) | Millimeter wave three-frequency selection surface based on multilayer coupling structure | |
| Dakhli et al. | Multiband small zeroth-order metamaterial antenna | |
| CN108718005B (en) | Double-resonance microwave absorber | |
| Wang et al. | An ultra-thin wideband 3-D frequency selective rasorber based on ferrite absorber and slow wave structure | |
| Ma et al. | Square loop frequency selective surface with wide-passband properties using multi-period structures | |
| CN215579081U (en) | Single-layer broadband frequency selective wave absorber with trap wave band |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant |