WO2022137185A1 - Réseau d'antennes à fentes - Google Patents
Réseau d'antennes à fentes Download PDFInfo
- Publication number
- WO2022137185A1 WO2022137185A1 PCT/IB2021/062221 IB2021062221W WO2022137185A1 WO 2022137185 A1 WO2022137185 A1 WO 2022137185A1 IB 2021062221 W IB2021062221 W IB 2021062221W WO 2022137185 A1 WO2022137185 A1 WO 2022137185A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- antenna array
- slots
- array according
- coupling
- waveguide
- Prior art date
Links
- 230000008878 coupling Effects 0.000 claims abstract description 50
- 238000010168 coupling process Methods 0.000 claims abstract description 50
- 238000005859 coupling reaction Methods 0.000 claims abstract description 50
- 238000004519 manufacturing process Methods 0.000 claims abstract description 30
- 239000000654 additive Substances 0.000 claims abstract description 17
- 230000000996 additive effect Effects 0.000 claims abstract description 17
- 210000000554 iris Anatomy 0.000 claims abstract description 11
- 239000011247 coating layer Substances 0.000 claims 1
- 238000007639 printing Methods 0.000 description 14
- 238000010146 3D printing Methods 0.000 description 5
- 238000003491 array Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 230000005540 biological transmission Effects 0.000 description 3
- 239000011248 coating agent Substances 0.000 description 2
- 238000000576 coating method Methods 0.000 description 2
- 238000003754 machining Methods 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 238000000149 argon plasma sintering Methods 0.000 description 1
- PKOMXLRKGNITKG-UHFFFAOYSA-L calcium;hydroxy(methyl)arsinate Chemical compound [Ca+2].C[As](O)([O-])=O.C[As](O)([O-])=O PKOMXLRKGNITKG-UHFFFAOYSA-L 0.000 description 1
- 229910010293 ceramic material Inorganic materials 0.000 description 1
- 238000005388 cross polarization Methods 0.000 description 1
- 239000010432 diamond Substances 0.000 description 1
- 238000004070 electrodeposition Methods 0.000 description 1
- 210000000887 face Anatomy 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 238000007665 sagging Methods 0.000 description 1
- 238000004088 simulation Methods 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q21/00—Antenna arrays or systems
- H01Q21/0006—Particular feeding systems
- H01Q21/0037—Particular feeding systems linear waveguide fed arrays
- H01Q21/0043—Slotted waveguides
- H01Q21/005—Slotted waveguides arrays
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q13/00—Waveguide horns or mouths; Slot antennas; Leaky-waveguide antennas; Equivalent structures causing radiation along the transmission path of a guided wave
- H01Q13/10—Resonant slot antennas
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q21/00—Antenna arrays or systems
- H01Q21/0087—Apparatus or processes specially adapted for manufacturing antenna arrays
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/27—Adaptation for use in or on movable bodies
- H01Q1/28—Adaptation for use in or on aircraft, missiles, satellites, or balloons
Definitions
- the present invention relates to the field of slot antennas and the manufacture of these antennas.
- Slot array antennas consist of a metal surface, generally a flat plate, with a matrix of cut slots which radiate electromagnetic waves.
- the shape, size and arrangement of the slits determine the radiation pattern for a given frequency.
- the shape and the precise arrangement of the slots makes it possible to reduce the problems of cross-polarization between slots.
- the slots are generally provided in one of the walls of a waveguide which conducts the electromagnetic energy to the slots in transmission or from the slots in reception.
- slot antennas can be juxtaposed so as to form a network of slot antennas.
- Such a network makes it possible to better control the phase and the amplitude of the signals emitted by each slot.
- Such antennas and antenna arrays are used in particular in radar antennas for aircraft, including meteorological radar antennas in the nose of the aircraft ("airborne weather radar”) and certain television transmission antennas UHF, and in particular marine radar antennas.
- Document US Pat. No. 3,363,253 relates to an array of slotted antennae comprising a plurality of juxtaposed elementary antennae, each of these elementary antennae comprising a waveguide, one face of which is provided with pairs of radiating slots arranged in the waveguide length.
- a coupling waveguide individually feeds the elementary antennas.
- Waveguides are usually 3D printed with the longitudinal axis, along the direction of signal propagation, vertical, which avoids having to print cantilevered waveguide walls.
- Document US 2018/366800 A1 relates to an antenna array, each of the antennas comprising juxtaposed waveguides, one face of which is provided with radiating slots. These antennas are served by a coupling waveguide. This document discloses in particular additive manufacturing of certain components, or even of the entire antenna array.
- the document GUENNOU-MARTIN A ET AL “Design and manufacturing of a 3-D conformal slotted waveguide antenna array in Kuband based on Direct Metal Laser Sintering”, 2016 IEEE CONFERENCE ON ANTENNA MEASUREMENTS & APPLICATIONS (CAMA), IEEE, October 23, 2016, also relates to an antenna array comprising juxtaposed waveguides, one face of which is provided with slots. The juxtaposed waveguides are fed by a coupling waveguide.
- This article deals in particular with the additive manufacturing of such slotted antenna arrays.
- An object of the present invention is therefore to provide a more economical array of slotted antennas, in particular for manufacture in small series with personalized dimensions, or also in large series.
- Another object of the present invention is to provide a new and more economical slotted antenna array manufacturing process.
- An object of the present invention is therefore to provide a more economical slotted antenna array, in particular for manufacture in small series with personalized dimensions, or also in large series.
- Another object of the present invention is to provide a new and more economical slot array antenna manufacturing method.
- each elementary antenna comprising a waveguide one face of which is provided with radiating slots in order to radiate outside the waveguide at least part of the electromagnetic energy in said waveguide,
- a coupling waveguide for individually supplying each said elementary antenna from a face opposite to said face provided with radiating slots, characterized in that said antenna array is a component resulting from manufacturing additive, and in that a section of said radiating slots is either non-rectangular or rectangular with sides not parallel to a longitudinal direction of said waveguides, and in that the coupling waveguide comprises irises and / or steps on its internal face so as to control the phase and/or the amplitude of the signals in the various coupling slots.
- the signal introduction slot allows the electromagnetic signal to be introduced into, or extracted from, the coupling waveguide.
- the non-rectangular section of the slots gives the designer more freedom to make slots which can be printed in additive manufacturing, that is to say slots which do not have to be machined by removing material from one face.
- this non-rectangular section makes it possible to produce slots, the upper portion of which during printing is less likely to collapse.
- This section may for example be oval, elliptical, triangular, or polygonal with at least five sides.
- the section of the slots is advantageously hexagonal. This makes it possible to produce an arch portion of the slot during printing which is sufficiently oblique with respect to the horizontal so as not to sag.
- the section of the slots can be pentagonal.
- the largest dimension of the slots can extend parallel to the longitudinal direction of said waveguides. This makes it possible to manufacture the antenna array by additive printing with the vertically oriented waveguides and vertically oriented slots, and thus reduce the risk of sagging.
- the largest dimension of the slots may extend obliquely relative to the longitudinal direction of said waveguides. This makes it possible to manufacture the antenna array by additive printing with the waveguides whose slots, even rectangular, do not have a horizontal cantilever section during printing, and which are therefore less likely to s sag.
- the coupling waveguide advantageously extends in a direction perpendicular to that of the elementary antennas.
- the coupling waveguide is advantageously connected to each elementary antenna through at least one coupling slot which makes it possible to transmit electromagnetic energy between the coupling waveguide and this elementary antenna.
- the section of the coupling slots can be either non-rectangular, or rectangular with sides that are not parallel to the longitudinal direction of said waveguides.
- the section of the coupling slots can be, for example, oval, elliptical, triangular, or polygonal with at least five sides.
- the largest dimension of said coupling slots may extend obliquely with respect to the longitudinal direction of said waveguides.
- the coupling slots are preferably oriented alternately at +45° and -45° with respect to the longitudinal direction of said waveguides. This oblique orientation facilitates manufacturing in 3D printing by reducing the overhanging portions. corners different inclinations, between 0° and 90°, can be provided. Tests and simulations have shown that alternating positive and negative slot inclinations improves coupling performance.
- the irises and/or steps are preferably oriented parallel to the longitudinal axis of said elementary antennae, so as to facilitate their additive manufacturing.
- said irises preferably have a non-rectangular iris section.
- the section of said coupling waveguide is also preferably non-rectangular, for example oval, elliptical, trapezoidal, hexagonal, or polygonal with at least 5 sides, in order to facilitate its additive manufacturing.
- the electromagnetic signal can be introduced into the coupling waveguide, or extracted from this coupling waveguide, through a signal introduction slot.
- This signal introduction slot advantageously has a non-rectangular section, preferably a hexagonal section.
- the antenna array may comprise a metallic or synthetic core produced by additive manufacturing, and a conductive coating on this core.
- the invention also relates to a method for manufacturing a slot antenna array comprising an additive manufacturing step, said elementary antennae being oriented with their longitudinal axis forming an angle of between 0° and 45° during this step, the slots having a non-rectangular section, for example a hexagonal section.
- Figure 1 illustrates a perspective view from the front of a slot antenna array according to the present invention
- Figure 2 illustrates a perspective view from the rear face of a slot antenna array according to the present invention
- Figure 3 illustrates a sectional view of a slot antenna array according to the present invention, the view being oriented along line 3-3- in Figure 2.
- Figure 4 illustrates a perspective view of a slot antenna array portion according to the present invention, the portion being cut out along line 4-4- in Figure 2.
- Figure 5 illustrates a perspective view of the rear part of a slot antenna array according to the present invention.
- Figure 6 illustrates a perspective view of the front part of a slot antenna array according to the present invention.
- Figure 1 illustrates a view of the front face 11 of an array 1 of slot antennas according to the present invention.
- the network comprises several elementary antennas 2a, 2b, ..., 2n juxtaposed along the z axis, each elementary antenna 2 comprising n radiating slots arranged in columns.
- the odd radiating slots are offset laterally relative to the even radiating slots of the same antenna.
- this antenna array 1 is intended to emit an electromagnetic signal through each radiating slot, the signals emitted by the different slots being combined.
- reception the signals received through the various radiating slots are combined in each elementary antenna 2 then between elementary antennas.
- the antenna array 1 may be intended for example to form a meteorological radar antenna, for example in the nose of an airplane.
- FIG. 2 illustrates a view of the rear face of the antenna array 1.
- the element 3 and a coupling waveguide which crosses all the elementary antennas 2a-2n to individually supply each of these elementary antennas from the rear face 12 opposite the front face provided with slots, or to receive and combine the electromagnetic signals in these different elementary antennas.
- the figure also shows the openings 20 passing through each elementary antenna 2 along the longitudinal axis z, and forming a waveguide connected to the slots 21 on the front face 11.
- the elements 120 are reinforcing and stiffening ribs s extending parallel to the longitudinal axis of the waveguides on the rear face 12.
- the symmetrical rib 121 has a greater height than the ribs 101 and supports the opening 33.
- This opening 33 constitutes a signal introduction slot to introduce an electromagnetic signal to be emitted into the guide coupling wave 3, and/or to recover the signal received in this waveguide.
- Figure 3 is a sectional view of the network 1 along line 3-3 in Figure 2.
- the coupling waveguide 3 is individually connected to the waveguide 20 of each of the elementary antennas 2 by means of a coupling slot 22.
- a T junction 34 is provided on the internal face of the coupling waveguide 3 opposite to the slot 33 so that the electromagnetic energy injected by this slot is distributed on either side of this junction.
- Elements 32 are steps on the face of the coupling waveguide 3 which control the phase and amplitude of the signals in each coupling slot 22.
- Figure 4 is another sectional and perspective view of the slot antenna array 1 along line 4-4 of Figure 2.
- the signal introduction slot 33 is formed in a rib 121', the asymmetrical shape of which is modified from that of FIG. 3.
- Figure 5 is another sectional and perspective view of the rear half of the slot antenna array 1.
- the signal introduction slot 33 enters from the rear face 12 into the guide. coupling wave 3.
- the steps 32 and the irises 31 provided on the walls of this channel make it possible to control the amplitude and the phase of the signals radiated from this waveguide 3.
- FIG. 6 is another sectional and perspective view of the front half of the slotted antenna array 1.
- the T-junction 34 is observed facing the signal introduction slot 33 , as well as the coupling slots 22 between the coupling waveguide 3 and the waveguides 20. These slots are inclined alternately at plus and -45° with respect to the longitudinal direction z of the waveguides 20.
- the antenna array 1 is obtained by additive manufacturing, for example by 3D printing, for example by stereolithography. It advantageously comprises a core not shown in metal, or possibly in synthetic or ceramic material, and a coating obtained by electrodeposition at least on the internal faces of this core, that is to say on the walls of the waveguides, and preferably on all the surfaces of the network.
- the antenna array can be monolithic.
- the network is obtained using a method comprising a step of printing the core by orienting the elementary antennas 2 vertically, that is to say parallel to the z-axis. This arrangement makes it possible to avoid the risk of the walls of the waveguides collapsing during 3D printing.
- the network is obtained using a process comprising a step of printing the core by orienting the elementary antennas 2 so that their longitudinal axis forms a greater angle at 0° and less than or equal to 45° with the vertical printing axis.
- This arrangement makes it possible to avoid the risk of the side walls of the slots collapsing during 3D printing.
- the largest dimension of the slots extends parallel to the printing direction so that the largest side walls of the slots are vertical, even if the slots are not parallel to the longitudinal axis of the elementary antennae.
- the radiating slots 21 ( Figure 1) have a section 21, which allows them to be produced by 3D printing without the need for machining and without the risk of the upper portion 210 (arch) collapsing during printing. .
- this upper portion forms a triangle, like the lower portion 211, so that the slots 21 have a hexagonal cross section.
- a pentagonal section, with a rectilinear lower portion, can also be imagined.
- the coupling slots 22 ( Figure 6) are inclined at + or -45° relative to the horizontal during printing, which also avoids the risk of their upper ceiling collapsing during printing. .
- the signal introduction slot 33 is preferably also of non-rectangular section, for example oval, elliptical, or polygonal with at least five sides, for example hexagonal, in order to allow its printing in a vertical position.
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Physics & Mathematics (AREA)
- Astronomy & Astrophysics (AREA)
- Aviation & Aerospace Engineering (AREA)
- General Physics & Mathematics (AREA)
- Remote Sensing (AREA)
- Variable-Direction Aerials And Aerial Arrays (AREA)
- Waveguide Aerials (AREA)
Abstract
Description
Claims
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US18/259,165 US20240204417A1 (en) | 2020-12-24 | 2021-12-22 | Slot antenna array |
EP21835867.9A EP4268325A1 (fr) | 2020-12-24 | 2021-12-22 | Réseau d'antennes à fentes |
IL303903A IL303903A (en) | 2020-12-24 | 2021-12-22 | Slot antenna array |
CA3200229A CA3200229A1 (fr) | 2020-12-24 | 2021-12-22 | Reseau d'antennes a fentes |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FRFR2014146 | 2020-12-24 | ||
FR2014146A FR3118538B1 (fr) | 2020-12-24 | 2020-12-24 | Réseau d’antennes à fentes |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2022137185A1 true WO2022137185A1 (fr) | 2022-06-30 |
Family
ID=75438946
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/IB2021/062221 WO2022137185A1 (fr) | 2020-12-24 | 2021-12-22 | Réseau d'antennes à fentes |
Country Status (6)
Country | Link |
---|---|
US (1) | US20240204417A1 (fr) |
EP (1) | EP4268325A1 (fr) |
CA (1) | CA3200229A1 (fr) |
FR (1) | FR3118538B1 (fr) |
IL (1) | IL303903A (fr) |
WO (1) | WO2022137185A1 (fr) |
Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2946057A (en) * | 1958-06-18 | 1960-07-19 | Hughes Aircraft Co | Mechanically variable complex slot |
US3363253A (en) | 1965-01-18 | 1968-01-09 | Ryan Aeronautical Co | Multi-beam resonant planar slot array antenna |
EP0988662A1 (fr) * | 1998-04-09 | 2000-03-29 | Raytheon Company | Fente shunt centree longitudinalement et alimentee par un diaphragme resonant a moulures decalees |
WO2017203568A1 (fr) * | 2016-05-23 | 2017-11-30 | 三菱電機株式会社 | Dispositif de guide d'ondes |
US20180366800A1 (en) | 2015-09-25 | 2018-12-20 | Bae Systems Australia Limited | An rf structure and a method of forming an rf structure |
CN209389219U (zh) * | 2019-02-25 | 2019-09-13 | 贵州航天电子科技有限公司 | 一种适用于增材制造的波导缝隙阵列天线结构 |
FR3095082A1 (fr) * | 2019-04-11 | 2020-10-16 | Swissto12 Sa | Dispositif à guide d’ondes de section ovale et procédé de fabrication dudit dispositif |
-
2020
- 2020-12-24 FR FR2014146A patent/FR3118538B1/fr active Active
-
2021
- 2021-12-22 WO PCT/IB2021/062221 patent/WO2022137185A1/fr active Application Filing
- 2021-12-22 US US18/259,165 patent/US20240204417A1/en active Pending
- 2021-12-22 IL IL303903A patent/IL303903A/en unknown
- 2021-12-22 EP EP21835867.9A patent/EP4268325A1/fr active Pending
- 2021-12-22 CA CA3200229A patent/CA3200229A1/fr active Pending
Patent Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2946057A (en) * | 1958-06-18 | 1960-07-19 | Hughes Aircraft Co | Mechanically variable complex slot |
US3363253A (en) | 1965-01-18 | 1968-01-09 | Ryan Aeronautical Co | Multi-beam resonant planar slot array antenna |
EP0988662A1 (fr) * | 1998-04-09 | 2000-03-29 | Raytheon Company | Fente shunt centree longitudinalement et alimentee par un diaphragme resonant a moulures decalees |
US20180366800A1 (en) | 2015-09-25 | 2018-12-20 | Bae Systems Australia Limited | An rf structure and a method of forming an rf structure |
WO2017203568A1 (fr) * | 2016-05-23 | 2017-11-30 | 三菱電機株式会社 | Dispositif de guide d'ondes |
CN209389219U (zh) * | 2019-02-25 | 2019-09-13 | 贵州航天电子科技有限公司 | 一种适用于增材制造的波导缝隙阵列天线结构 |
FR3095082A1 (fr) * | 2019-04-11 | 2020-10-16 | Swissto12 Sa | Dispositif à guide d’ondes de section ovale et procédé de fabrication dudit dispositif |
Non-Patent Citations (2)
Title |
---|
GUENNOU-MARTIN A ET AL.: "IEEE CONFERENCE ON ANTENNA MEASUREMENTS & APPLICATIONS (CAMA", 23 October 2016, IEEE, article "Design and manufacturing of a 3-D conformai slotted waveguide antenna array in Ku-band based on Direct Metal Laser Sintering" |
GUENNOU-MARTIN A ET AL: "Design and manufacturing of a 3-D conformal slotted waveguide antenna array in Ku-band based on Direct Metal Laser Sintering", 2016 IEEE CONFERENCE ON ANTENNA MEASUREMENTS & APPLICATIONS (CAMA), IEEE, 23 October 2016 (2016-10-23), pages 1 - 4, XP033040970, DOI: 10.1109/CAMA.2016.7815802 * |
Also Published As
Publication number | Publication date |
---|---|
CA3200229A1 (fr) | 2022-06-30 |
IL303903A (en) | 2023-08-01 |
US20240204417A1 (en) | 2024-06-20 |
FR3118538B1 (fr) | 2023-11-17 |
FR3118538A1 (fr) | 2022-07-01 |
EP4268325A1 (fr) | 2023-11-01 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
EP3167510B1 (fr) | Antenne à lentille à cornet | |
FR2652453A1 (fr) | Antenne coaxiale a fentes du type a alimentation a ondes progressives. | |
EP3843202B1 (fr) | Cornet pour antenne satellite bi-bande ka a polarisation circulaire | |
FR2904478A1 (fr) | Dispositif de transduction orthomode a compacite optimisee dans le plan de maille, pour une antenne | |
WO2020194270A1 (fr) | Composant radiofréquence comportant plusieurs dispositifs à guide d'onde muni de stries | |
US20200194860A1 (en) | Hollow metal waveguides having irregular hexagonal cross-sections and methods of fabricating same | |
FR2975537A1 (fr) | Element rayonnant pour antenne reseau active constituee de tuiles elementaires | |
CA2821250A1 (fr) | Antenne d'emission et de reception multifaisceaux a plusieurs sources par faisceau, systeme d'antennes et systeme de telecommunication par satellite comportant une telle antenne | |
EP3664214B1 (fr) | Eléments rayonnants à accès multiples | |
US11996600B2 (en) | Hollow metal waveguides having irregular hexagonal cross sections with specified interior angles | |
WO2022137185A1 (fr) | Réseau d'antennes à fentes | |
WO2021124170A1 (fr) | Antenne à double polarisation | |
WO2019229515A1 (fr) | Module radiofréquence | |
EP2764577B1 (fr) | Source multi-faisceaux | |
FR2613140A1 (fr) | Antenne cornet parallelepipedique a repartition du champ d'ouverture linearisee en deux polarisations | |
EP3340386B1 (fr) | Architecture mécanique d'un formateur de faisceaux pour antenne mfpb mono-réflecteur à partage de sources selon deux dimensions de l'espace et procédé de réalisation du formateur de faisceaux | |
WO2024100614A1 (fr) | Antenne striée a double polarisation | |
JP2017059909A (ja) | 導波管/伝送線路変換器、アレーアンテナ及び平面アンテナ | |
EP3306746B1 (fr) | Élément rayonnant en cavité et réseau rayonnant comportant au moins deux éléments rayonnants | |
WO2019086787A1 (fr) | Guide d'onde bi-mode à plans parallèles structurés | |
EP3900104B1 (fr) | Coupleur hyperfrequence bidirectionnel comprenant deux guides d'onde paralleles, a double nervure | |
EP0407258B1 (fr) | Distributeur d'énergie hyperfréquence pouvant rayonner directement | |
FR3128321A1 (fr) | Antenne à double polarisation | |
EP0831550B1 (fr) | Antenne-réseau polyvalente | |
EP3827473A1 (fr) | Filtre à guide d'ondes adapté pour un procédé de fabrication additive |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
121 | Ep: the epo has been informed by wipo that ep was designated in this application |
Ref document number: 21835867 Country of ref document: EP Kind code of ref document: A1 |
|
ENP | Entry into the national phase |
Ref document number: 3200229 Country of ref document: CA |
|
WWE | Wipo information: entry into national phase |
Ref document number: 18259165 Country of ref document: US |
|
NENP | Non-entry into the national phase |
Ref country code: DE |
|
ENP | Entry into the national phase |
Ref document number: 2021835867 Country of ref document: EP Effective date: 20230724 |