EP2564468A1 - Surface adaptee a filtrer une pluralite de bandes de frequences - Google Patents
Surface adaptee a filtrer une pluralite de bandes de frequencesInfo
- Publication number
- EP2564468A1 EP2564468A1 EP11731009A EP11731009A EP2564468A1 EP 2564468 A1 EP2564468 A1 EP 2564468A1 EP 11731009 A EP11731009 A EP 11731009A EP 11731009 A EP11731009 A EP 11731009A EP 2564468 A1 EP2564468 A1 EP 2564468A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- pattern
- segments
- branches
- surface according
- segment
- 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.)
- Granted
Links
- 238000001914 filtration Methods 0.000 title claims abstract description 12
- 230000000737 periodic effect Effects 0.000 claims abstract description 10
- 239000011111 cardboard Substances 0.000 claims description 5
- 239000011087 paperboard Substances 0.000 claims description 4
- 239000000758 substrate Substances 0.000 abstract description 2
- 230000010287 polarization Effects 0.000 description 8
- 238000010586 diagram Methods 0.000 description 3
- 239000000976 ink Substances 0.000 description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 239000004020 conductor Substances 0.000 description 2
- 230000001419 dependent effect Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 239000004593 Epoxy Substances 0.000 description 1
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 230000008021 deposition Effects 0.000 description 1
- 239000003989 dielectric material Substances 0.000 description 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- 239000010931 gold Substances 0.000 description 1
- 229910002804 graphite Inorganic materials 0.000 description 1
- 239000010439 graphite Substances 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000000123 paper Substances 0.000 description 1
- 229910052697 platinum Inorganic materials 0.000 description 1
- 230000000750 progressive effect Effects 0.000 description 1
- 229910052709 silver Inorganic materials 0.000 description 1
- 239000004332 silver Substances 0.000 description 1
Classifications
-
- 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
- H01Q15/14—Reflecting surfaces; Equivalent structures
-
- 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
Definitions
- Frequency-selective surfaces are generally referred to in the art as FSS (Frequency Selective Surface). They comprise a set of identical elementary conductive patterns, reproduced in a periodic arrangement on one side of a dielectric support. The shape and the dimensions of the elementary pattern, the arrangement of the periodic arrangement, and the characteristics of the conductive material of the pattern and the dielectric material of the support, are the main factors determining the filtering properties of the surface.
- the second fins of each branch form an angle of approximately 120 ° to each other and define an arrow point directed towards the outside of the pattern.
- the surface is adapted to filter two frequency bands respectively centered on 2.4 and 5.4 GHz.
- the dielectric support is a support of the paper or cardboard type
- the conductive patterns are produced by printing with a conductive ink.
- Another embodiment of the present invention provides the use of the above-mentioned surface for filtering three frequency bands in the range of 0.9 to 5.4 GHz, wherein the overall dimensions of an elementary pattern are the order of 1 to 10 centimeters, the lengths of each of the segments, branches, and fins being adjusted to select the three frequency bands referred.
- Figure 1 previously described, is a top view schematically showing an elementary conductive pattern of a frequency selective surface
- Figures 5 to 9 are schematic top views showing various alternative embodiments of the elementary conductive pattern of Figure 3.
- Fig. 10 is a diagram showing the frequency responses of a surface formed from the elementary pattern of Fig. 5 for electromagnetic waves of different angles of incidence.
- Fig. 3 is a top view schematically showing an embodiment of an elementary conductive pattern 31 of a frequency-selective surface.
- FIG. 4 is a top view schematically showing a portion of an embodiment of a frequency selective surface formed by reproducing, in a periodic arrangement on the dielectric support 10, the elementary pattern 31 of FIG.
- the pattern 31 is reproduced by translation along each of the directions of the segments 12a to 12c of the base tripole, so that the same distance D m , which is not zero, separates each outer end of a segment of a pattern 31, from the center 14 of a neighbor 31 pattern.
- the translation operation is repeated until covering the entire target area. It will be noted that the dimensions of the elementary pattern and the distance D m are chosen such that the elementary patterns are disjointed.
- the frequency response of the surface thus formed depends essentially on the length L s of the segments 12, the length L 1 of the branches 32, the distance 3 ⁇ 4 between the intermediate point of departure of the branches 32 of a segment 12 and the center 14 of the pattern, and the distance D m between neighboring patterns.
- Such a surface has the property of filtering the electromagnetic waves belonging to three distinct frequency bands centered on its three main resonant frequencies.
- simulation software is used to test different combinations of parameters by making progressive adjustments until a set of parameters is obtained which is suitable for the target frequency bands.
- the adjustment of the first and second resonance frequencies is relatively easy, but it is difficult to adjust the third resonant frequency without modifying the first two frequencies.
- the three resonance frequencies of the surface of FIG. 4 remain slightly dependent on the angle of incidence and the polarization of the electromagnetic waves.
- Fig. 5 is a top view schematically showing another embodiment of an elementary conductive pattern 51 of a frequency-selective surface.
- the pattern 51 includes all the elements of the pattern 31 of Figure 3. It also includes two substantially identical blades have length L, respectively 52al and 52a2, 52b2 and 52bl and 52cl and 52c2, extending from the outer end of each segment 12, substantially symmetrically with respect to the direction of the segment.
- the fins 52 of each segment 12 form between them an angle of approximately 120 °, for example between 110 and 130 °, and define an arrow point directed towards the outside of the pattern.
- the pattern 51 further comprises two substantially identical fins of length L 1, respectively 54a1 and 54a2, 54a21 and 54a22, 54bl1 and 54bl2, 54b21 and 54b22, 54cl1 and 54cl2, and 54c21 and 54c22, extending at from the outer end of each branch 32 (on the side of the branch opposite the segment from which it is derived), substantially symmetrically with respect to the general direction of the branch.
- the fins 54 of each branch 32 form between them an angle of approximately 120 °, for example between 110 and 130 °, and define an arrow point directed outwards.
- the dimensions of the pattern are chosen so that fins associated with distinct segments or branches are not intersecting and do not intersect the other segments and branches of the pattern.
- FIG. 5 shows, in dotted lines, part of a pattern 51 'corresponding to a translation of the pattern 51 in the direction of the segment 12a of the pattern 51.
- the fins 52 of the pattern segment 51' the closest to the center 14 of the pattern 51 are included in the space delimited by the segments 12b and 12c and by the branches 32b2 and 32c1 of the pattern 51.
- a non-zero distance D m separates the center 14 from the pattern 51, end of the segment 12 closest.
- other units (not shown) of a frequency-selective surface are similarly formed, by translation along the directions of the other segments 12, according to a periodic arrangement of the type described with reference to FIG. 4.
- the surface thus formed has three distinct main resonant frequencies. These three resonance frequencies are independent of the angle of incidence and the polarization of the electromagnetic waves.
- one introduction of additional parameters as L and k L a length of the fins 52 and 54 increases the possibilities of resonant frequency setting.
- FIG. 6 is a top view schematically showing an alternative embodiment of the elementary conductive pattern of FIG. 5.
- the pattern 61 of FIG. 5 is a top view schematically showing an alternative embodiment of the elementary conductive pattern of FIG. 5.
- two identical fins 64 (respectively 64all and 64al2, 64a21 and 64a22, 64bl1 and 64bl2, 64b21 and 64b22, 64cl1 and 64cl2, and 64c21 and 64c22) associated with a branch 32 each form an angle of approximately 60 °, for example between 55 and 65 °, with the general direction of the branch, and are aligned substantially in the same direction, this direction intersecting the direction of the segment 12 from which branch 32 originates.
- the pattern 61 makes it possible to obtain surfaces with three resonant frequencies. It notably makes it possible to obtain resonant frequencies that are different from those obtained from the pattern 51, and has the same adjustment possibilities and the same insensitivity to the orientation and polarization of the electromagnetic waves as the pattern 51.
- FIG. 7 is a top view schematically showing an alternative embodiment of the elementary conductive pattern of FIG. 6.
- the pattern 71 of FIG. 7 is a top view schematically showing an alternative embodiment of the elementary conductive pattern of FIG. 6.
- the pattern 71 differs from the pattern of Figure 6 by the shape of the branches from segments 12.
- the pattern 71 has two branches 72
- branches 72 comprise a square-shaped extension H c , extending in a direction approximately orthogonal to the general direction of the branch, towards the outside of the pattern.
- the pattern 71 makes it possible to obtain surfaces with three resonance frequencies.
- the Prediction of a slot extension on the branches 72 makes it possible to vary the length of the branches further, which increases the possibilities of adjusting the resonant frequencies.
- the resonant frequencies of the surfaces obtained from the pattern 71 are insensitive to the orientation and the polarization of the electromagnetic waves.
- the inventors obtained a surface adapted to screen at frequencies of the order of 0.9 and 1.8 GHz. , using the following parameters: The inventors have also obtained a surface adapted to screen at frequencies of the order of 2.4 and 5.4 GHz using the following parameters: In the context of the two examples above, there is no interest in the third resonant frequency that nevertheless exists.
- FIG. 9 is a top view schematically showing an alternative embodiment of the elementary conductive pattern of FIG. 8.
- each branch issuing from a segment of the base tripole comprises crenellated extensions. of different heights, extending in directions approximately orthogonal to the general direction of the branch, alternately outwardly and inwardly of the pattern.
- the blades associated with the branches are arranged in an arrow, as in the pattern 51 of FIG.
- FIG. 10 is a diagram representing the evolution, as a function of frequency, of the transmission factor (in decibels) of a surface formed by reproduction of the elementary pattern 51 of FIG. 5, for electromagnetic waves of angles of distinct impact.
- the curves 101, 102 and 103 represent the frequency responses of the surface for electromagnetic waves oriented in directions forming respectively angles of 0, 30 and 60 ° with the normal to the plane of the surface.
- the choice of parameters is such that the surface has three distinct resonance frequencies, of the order of 0.9, 1.8 and 2.1 GHz, respectively. It can be seen from the diagram of FIG. 10 that the resonance frequencies of the surface, corresponding to negative peaks in the curves 101, 102, 103, are independent of the angle of incidence of the waves. Note also that the resonance frequencies are also independent of the polarization of the waves.
- the frequency-selective surfaces described above are carried out on paper or cardboard type supports, for example on wallpapers, on paper or cardboard coated with plasterboard coated with cardboard, or on any other support adapted to coat the walls of a room of a building.
- the conductive patterns are for example made by printing with conductive inks.
- the coverage ratio of the conductive patterns is relatively low, for example less than 15%. This makes it possible to maintain a manufacturing cost of these relatively low surfaces.
- the elementary conductive patterns described in relation to FIGS. 7 to 9 may give rise to several variants.
- one skilled in the art will implement the desired operation by varying the number, direction, and direction of crenellated extensions formed on the branches of the pattern.
Landscapes
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Aerials With Secondary Devices (AREA)
- Shielding Devices Or Components To Electric Or Magnetic Fields (AREA)
- Control Of Motors That Do Not Use Commutators (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR1053217A FR2959355B1 (fr) | 2010-04-27 | 2010-04-27 | Surface adaptee a filtrer une pluralite de bandes de frequences |
PCT/FR2011/050843 WO2011135224A1 (fr) | 2010-04-27 | 2011-04-13 | Surface adaptee a filtrer une pluralite de bandes de frequences |
Publications (2)
Publication Number | Publication Date |
---|---|
EP2564468A1 true EP2564468A1 (fr) | 2013-03-06 |
EP2564468B1 EP2564468B1 (fr) | 2015-05-27 |
Family
ID=43414830
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP11731009.4A Active EP2564468B1 (fr) | 2010-04-27 | 2011-04-13 | Surface adaptee a filtrer une pluralite de bandes de frequences |
Country Status (13)
Country | Link |
---|---|
US (1) | US9065180B2 (fr) |
EP (1) | EP2564468B1 (fr) |
JP (1) | JP5697826B2 (fr) |
KR (1) | KR101747903B1 (fr) |
CN (1) | CN103004023B (fr) |
BR (1) | BR112012027525A2 (fr) |
CA (1) | CA2797559C (fr) |
DK (1) | DK2564468T3 (fr) |
ES (1) | ES2543695T3 (fr) |
FR (1) | FR2959355B1 (fr) |
RU (1) | RU2012150505A (fr) |
SG (1) | SG185049A1 (fr) |
WO (1) | WO2011135224A1 (fr) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN110943301A (zh) * | 2019-12-12 | 2020-03-31 | 中国科学院长春光学精密机械与物理研究所 | 跨尺度双带通频率选择表面及其周期单元、设计方法 |
Families Citing this family (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP6142522B2 (ja) * | 2012-12-20 | 2017-06-07 | 横浜ゴム株式会社 | 周波数選択部材および曲面への周波数選択素子の配列決定方法 |
US9622338B2 (en) | 2013-01-25 | 2017-04-11 | Laird Technologies, Inc. | Frequency selective structures for EMI mitigation |
US9307631B2 (en) * | 2013-01-25 | 2016-04-05 | Laird Technologies, Inc. | Cavity resonance reduction and/or shielding structures including frequency selective surfaces |
CN103401049A (zh) * | 2013-08-07 | 2013-11-20 | 中国科学院长春光学精密机械与物理研究所 | 一种极化性能稳定的厚屏频率选择表面滤波器 |
CN109755740B (zh) * | 2017-11-01 | 2021-06-22 | 航天特种材料及工艺技术研究所 | 一种带阻型fss结构、fss屏及罩壁结构 |
CN108899635A (zh) * | 2018-06-25 | 2018-11-27 | 四川斐讯信息技术有限公司 | 一种频选结构及其设计方法、包含其的内置天线通讯设备 |
CA3106112A1 (fr) * | 2018-07-11 | 2020-01-16 | Cld Western Property Holdings Ltd. | Filtre radio plan selectif en frequence |
FR3101151B1 (fr) * | 2019-09-24 | 2021-12-17 | Office National Detudes Rech Aerospatiales | Dispositif pour reveler des variations spatiales de polarisation d’un rayonnement electromagnetique |
Family Cites Families (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3148370A (en) * | 1962-05-08 | 1964-09-08 | Ite Circuit Breaker Ltd | Frequency selective mesh with controllable mesh tuning |
US4126866A (en) * | 1977-05-17 | 1978-11-21 | Ohio State University Research Foundation | Space filter surface |
US5161068A (en) * | 1989-07-20 | 1992-11-03 | The United States Of America As Represented By The Secretary Of The Air Force | Superconducting searching filter |
DE4121245C2 (de) * | 1991-06-27 | 1995-08-10 | Daimler Benz Aerospace Ag | Frequenzselektive Oberflächenstruktur |
US6888500B2 (en) * | 2003-06-11 | 2005-05-03 | Harris Corporation | Beam steering with a slot array |
US6911957B2 (en) | 2003-07-16 | 2005-06-28 | Harris Corporation | Dynamically variable frequency selective surface |
JP2005142298A (ja) | 2003-11-05 | 2005-06-02 | Yokohama Rubber Co Ltd:The | 周波数選択板の素子パターン及び周波数選択板 |
GB2460288B (en) * | 2006-06-19 | 2012-02-22 | Mitsubishi Cable Ind Ltd | Electromagnetic shielding material and electromagnetic absorber |
US7884718B2 (en) | 2006-12-20 | 2011-02-08 | Symbol Technologies, Inc. | Frequency selective surface aids to the operation of RFID products |
US7990328B2 (en) * | 2007-03-29 | 2011-08-02 | The Board Of Regents, The University Of Texas System | Conductor having two frequency-selective surfaces |
-
2010
- 2010-04-27 FR FR1053217A patent/FR2959355B1/fr not_active Expired - Fee Related
-
2011
- 2011-04-13 US US13/643,787 patent/US9065180B2/en active Active
- 2011-04-13 KR KR1020127030131A patent/KR101747903B1/ko active IP Right Grant
- 2011-04-13 BR BR112012027525A patent/BR112012027525A2/pt not_active IP Right Cessation
- 2011-04-13 CN CN201180021625.0A patent/CN103004023B/zh active Active
- 2011-04-13 SG SG2012079398A patent/SG185049A1/en unknown
- 2011-04-13 DK DK11731009.4T patent/DK2564468T3/en active
- 2011-04-13 EP EP11731009.4A patent/EP2564468B1/fr active Active
- 2011-04-13 RU RU2012150505/08A patent/RU2012150505A/ru unknown
- 2011-04-13 JP JP2013506709A patent/JP5697826B2/ja not_active Expired - Fee Related
- 2011-04-13 CA CA2797559A patent/CA2797559C/fr active Active
- 2011-04-13 ES ES11731009.4T patent/ES2543695T3/es active Active
- 2011-04-13 WO PCT/FR2011/050843 patent/WO2011135224A1/fr active Application Filing
Non-Patent Citations (1)
Title |
---|
See references of WO2011135224A1 * |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN110943301A (zh) * | 2019-12-12 | 2020-03-31 | 中国科学院长春光学精密机械与物理研究所 | 跨尺度双带通频率选择表面及其周期单元、设计方法 |
Also Published As
Publication number | Publication date |
---|---|
JP2013527694A (ja) | 2013-06-27 |
DK2564468T3 (en) | 2015-07-20 |
CN103004023A (zh) | 2013-03-27 |
ES2543695T3 (es) | 2015-08-21 |
FR2959355A1 (fr) | 2011-10-28 |
CA2797559A1 (fr) | 2011-11-03 |
BR112012027525A2 (pt) | 2016-07-26 |
FR2959355B1 (fr) | 2012-08-17 |
EP2564468B1 (fr) | 2015-05-27 |
CA2797559C (fr) | 2017-09-05 |
KR20130105288A (ko) | 2013-09-25 |
US20130127651A1 (en) | 2013-05-23 |
WO2011135224A1 (fr) | 2011-11-03 |
CN103004023B (zh) | 2014-12-24 |
KR101747903B1 (ko) | 2017-06-15 |
US9065180B2 (en) | 2015-06-23 |
RU2012150505A (ru) | 2014-06-10 |
JP5697826B2 (ja) | 2015-04-08 |
SG185049A1 (en) | 2012-12-28 |
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