WO2003007423A1 - Antenne a couplage reactif comportant deux elements rayonnants - Google Patents
Antenne a couplage reactif comportant deux elements rayonnants Download PDFInfo
- Publication number
- WO2003007423A1 WO2003007423A1 PCT/FR2002/002448 FR0202448W WO03007423A1 WO 2003007423 A1 WO2003007423 A1 WO 2003007423A1 FR 0202448 W FR0202448 W FR 0202448W WO 03007423 A1 WO03007423 A1 WO 03007423A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- antenna
- antennas
- access
- branches
- radiating elements
- Prior art date
Links
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q9/00—Electrically-short antennas having dimensions not more than twice the operating wavelength and consisting of conductive active radiating elements
- H01Q9/04—Resonant antennas
- H01Q9/0407—Substantially flat resonant element parallel to ground plane, e.g. patch antenna
- H01Q9/0414—Substantially flat resonant element parallel to ground plane, e.g. patch antenna in a stacked or folded configuration
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/36—Structural form of radiating elements, e.g. cone, spiral, umbrella; Particular materials used therewith
- H01Q1/38—Structural form of radiating elements, e.g. cone, spiral, umbrella; Particular materials used therewith formed by a conductive layer on an insulating support
Definitions
- the invention relates to printed antennas having a small footprint, in particular elementary printed antennas in plated technology for reception and / or transmission networks, for example for boarding purposes in a vehicle.
- next multimedia satellite services will require simultaneous access to several services and several satellites, which requires depointable and eventually receiving antennas incorporating intelligence.
- the current ground technologies based on satellite dishes and mechanical solutions will quickly be limiting for mass access to these services for reasons of space and aesthetics.
- the long-term solution will be the active multi-satellite flat antenna type with electronic depointing.
- such antennas do not yet exist essentially for reasons of cost and technology.
- a first technology consists in the use of orthogonal modes on an asymmetrical patch. This solution makes it possible to have two separate accesses for each band but it locks the bipolarization operation (there is only one polarization per frequency).
- a second technology consists in the use of multiple patches: different patches functioning like as many resonators at different frequencies and can be stacked in height or distributed on the surface.
- the latter solution being very restrictive in terms of size when it comes to integrating the element into a network.
- a third technology consists in the use of small plates or patches charged reactively.
- the load can be constituted by in-line stubs (return) loaded by microstrips or coaxials, by vertical short-circuit “pawns” or by the incorporation of slots, openings or notches on the patches themselves. same.
- the solution proposed in document [3] uses coaxial lines to supply the element associated with one of the two bands. This type of solution with vertical coaxial pins has very high mounting costs when developing a network antenna.
- the solution of document [2] presents two levels of patches: a first level for the high band supplied by coupling slot, which rejects the supply lines behind a ground plane. A second level of patch is used by the low band with a large basic element which has been perforated so as to let "pass" the radiation of the lower patches.
- This upper level is powered by proximity coupling, which offers the advantage of being able to decouple circuits power supply linked to the two frequency bands (transmit / receive) on two different surfaces, thus providing natural insulation between the circuits.
- this solution is only practically feasible for band ratios greater than 4: 1, and not for applications targeting for example a band ratio of the order of 1.25: 1. at 2: 1.
- small plates are adopted for a first strip and a large plate for a second strip.
- the small plates are coupled with two supply lines and two slots, and the large plate is coupled with two other supply lines, which are placed in the immediate vicinity of this large plate.
- the large plate has an area of approximately 32 times the surface of each of the small plates.
- such an antenna is a printed antenna comprising two radiating elements of planar shape which are substantially superimposed, a first arrangement of reactive coupling capable of exciting a radiating elements, this first reactive coupling arrangement comprising at least one supply line and a ground conductor plane provided with at least one coupling slot, the antenna further comprising a second reactive coupling arrangement capable of exciting the 'other of the radiating elements, characterized in that the radiating elements have areas whose values are sufficiently close for the first arrangement of reactive coupling to produce a simultaneous coupling of the two radiating elements.
- the two operating bands due respectively to the first and second arrangement of excitation are clearly distinguished from one another although being close, due to the fact that at least the coupling with the arrangement comprising the slot is a double coupling.
- FIG. 1a is a cross section of a unitary antenna according to a first mode of the invention in which a second supply line 35 is located between two radiating patches 25 and 45;
- FIG. 1b corresponds to another embodiment in which the second supply line 35 and located between a lower radiating patch 25 and a ground plane comprising coupling slots 15;
- FIG. 2a is a top view of the same unitary antenna;
- FIG. 2b and 2c show two variants of a radiating element, according to the invention;
- FIG. 3 is a simplified diagram from above of a reactive coupling arrangement of this same unitary antenna;
- FIGs 4a to 4c show results of measurements of transmission and reflection coefficients obtained with the antenna of Figures 1 to 3;
- FIG. 5 is a representation of Smith corresponding to the antenna of Figures 1 to 3;
- - Figure 6 is a top view of a pair of unit antennas supplied according to an advantageous electrical diagram for reducing parasitic coupling currents;
- FIG. 7 is a top view of an assembly comprising two pairs of antennas according to Figure 6, couples advantageously connected to reduce parasitic coupling currents;
- Figures 8a and 8b show radiation patterns obtained for the network consisting of four unit antennas conforming to that of Figure 7;
- FIG. 9 shows a unitary antenna array supplied according to an advantageous feed architecture to reduce parasitic coupling currents.
- FIGS. 1 to 3 show a unitary antenna according to a preferred embodiment of the invention.
- This unitary antenna is made up of four layers of substrate 10, 20, 30 and 40, isolating between them five layers of metallization 5, 15, 25, 35 and 45.
- the metallization layers comprise two layers 5 and 45 arranged respectively on the lower face and on the upper face of the antenna, and three layers 15, 25 and 35 which are each arranged between two layers of substrate.
- Two metallizations 25 and 45 each form a radiating element, and the other three metallizations 5, 15 and 35 form part of two reactive coupling arrangements, that is to say excitation of the radiating elements 25 and 45.
- the radiating elements can themselves incorporate various openings, that they can be engraved on layers provided or not with uniplanar ground plane 25bis, 45bis (cf. fig. 2b and 2c) .
- the radiating element 25, 45 is isolated from it by a slot which follows its outline (cf. fig. 2c).
- a first of these two reactive coupling arrangements includes the lower metallization 5 and the immediately upper metallization 15.
- the lower metallization 5 forms two supply lines 6 and 7, which are here microstrips, which could be triplates. These supply lines 6 and 7 are supplied at a first frequency, which is a low frequency.
- the immediately upper metallization 15 is a perforated ground plane of two coupling slots 16 and 17 each placed vertically and perpendicular to a respective line among the lines 6 and 7.
- the coupling slots 16 and 17 are here in the form of a U to save space. They can be straight or in the shape of a “dog bone” for optimal efficiency.
- the supply lines 6 and 7 extend beyond the coupling slots 16 and 17 by forming adaptation returns 6a and 9a (adaptation stubs in English).
- the second reactive coupling arrangement comprises metallization 35, which is located between the radiating elements 25 and 45 or else between the lower radiating element 25 and the ground plane 15.
- This metallization 35 forms two supply lines 36 and 37 under made of microstrips etched on the substrate layer 30, supplied at a second frequency, which is here a high frequency.
- the portion of a conductive link which extends into the antenna in the chosen direction of radiation is called a “supply line”. In other words, it is the part which is mainly electromagnetically active in a conductive line.
- reception band the frequency band associated with the excitation by the slots 16 and 17, and to call “emission band” the frequency band associated with the excitation by lines 36 and 37 located above the ground plane 15.
- the operation of the antenna in the band called "reception” is based on the simultaneous reactive coupling of the two radiating elements 25 and 45, or double coupling.
- 25 and 45 are provided with surfaces close to each other, that is to say areas having a relative deviation of less than about 20%.
- the difference in area divided by the average area of the two areas is called the relative area difference.
- each of the two elements 25 and 45 radiates in the reception band.
- each element 25 and 45 being excited by two perpendicular supply lines 6 and 7, each radiates two fields polarized in two directions perpendicular to each other.
- the supply lines 36 and 37 generate a reactive proximity coupling on the upper radiating element 45.
- the excitation generated by the excitation arrangement 36, 37 may however, according to a variant, also consist of a reactive coupling simultaneously on the two radiating elements 25 and 45 (double coupling).
- the supply lines 36 and 37 correspond to respective radiations in two perpendicular directions.
- the supply lines 6, 7, 36, 37 are separated as much as possible from each other.
- a ground plane is interposed between the lines 6, 7 and the lines 36, 37 in order to increase their insulation.
- two polarizations have been provided on each of the layers 5 and 35 (therefore in total four accesses) while, on the other hand, having frequency bands Tx or Rx specific to each layer.
- the two supply lines 36 and 37 are preferably placed closer to the radiating element 25 than to the radiating element 45.
- the proximity coupling generated by the lines 36 and 37 is a capacitive coupling, but can also be inductive (selfic).
- Proximity coupling is optimized by the fact that the supply lines 36 and 37 are provided at their end which is inside the antenna with capacitive terminations 38 and 39, here in the form of rectangular plates.
- the plate-shaped terminations can be replaced by terminations constituted by slots made inside the antenna in the radiating element 25, in particular in a variant where the substrate layer 30 is removed and where the lines of food 36 and 37 open directly onto the radiating element 25 thus perforated, or else when the layers 30 and 35 are located under the layer 25.
- Such slots appear to behave themselves as supply lines, and generate an inductive or capacitive coupling according to their length. Terminations which are internal to the antenna are advantageously adopted, because thus they do not generate any congestion outside the unitary antenna, which is particularly important in the flat networks of such antennas, which must be not very bulky.
- the radiating elements 25 and 45 are squares 10 mm wide, and the antenna has a total thickness of the order of 2 mm.
- each of the supply lines 6, 7, 36, 37 is supplied via a local link, called an access.
- Each of the four lines of a given antenna is supplied by an independent signal, coming from a different access among four accesses connected to the antenna.
- the antenna described here which is bipolar and dual-band, is therefore a four-port antenna.
- the accesses as well as the supply circuits associated with the reception band are completely etched on the substrate layer 10 located under the ground plane 15 of the antenna.
- This arrangement provides natural spatial insulation from the substrate layer 30 located above the ground plane 5 which carries the supply circuits of the emission layer.
- This architecture provides typical isolation between the transmit and receive ports in the range of -30 to -40 dB.
- polarizing grids can replace the solid metallizations which constitute here the radiating elements.
- Cross shapes have been chosen here for the radiating elements 25 and 45, which optimize the radiation, but square, rectangular or circular shapes can also be adopted, which optionally incorporate slots or openings.
- These elements can be engraved on layers with or without the uniplanar ground plane (cf. fig. 2b and 2c). In the latter case (fig. 2c) the radiating element is isolated from the ground plane by a slot which follows its outline.
- the antenna has a reception band which is particularly wide and which is particularly well decoupled from the transmission band.
- This reception band has a spread of at least 15%, preferably at least 20%, and here 18%, figures obtained by double coupling of the radiating elements in this band.
- the ratio between the width of the band and the center frequency of the band is called spreading or bandwidth.
- the reception band here is 10.75 - 12.75 GHz for an ROS (Stationary Wave Ratio) less than 1.8.
- FIGS. 4a and 4b present the changes in reflection coefficients S11 and S22
- FIG. 5 is a representation of Smith for the parameter S11. These figures show a wide bandwidth (here of the order of 20%). As can be seen, the isolation between the ports represented by the evolution of the parameters in Figure 4c (parameters S12 or S21) is better than 20dB.
- the preferred antenna described here is therefore bi-polarization and bi-band (therefore 4 accesses), with the advantages of traditional printed antennas
- the antenna which has just been described will advantageously constitute the unitary element of a network including several antennas such as this, for example several thousand such antennas.
- the preferred supply arrangement is formed of two circuits and is based on a series of pairs of antennas similar to the pair in FIG. 6.
- Each antenna has at least two perpendicular feed lines.
- the supply lines in FIG. 6 are those of the called reception band, but the arrangements described are also adopted for the supply arrangement of the transmission band.
- Each antenna in FIG. 6 has two perpendicular directions of radiation, hereinafter called direction H (horizontal) and direction V (vertical).
- the supply arrangement described below aims to ensure that the currents conveyed by an access corresponding to a supply direction do not result in a stray current in an access corresponding to the other supply direction, current parasite which would be due to a coupling within each antenna between the directions H and V.
- each access separates each towards the two antennas into two branches, branches which are arranged so as to eliminate parasitic currents.
- the two branches coming from the access 110 have at the end, when they are traversed going from the access towards the end of the branch considered, each time in the same direction towards the outside of the antenna.
- these branches present at the end, in their portion having the direction H, that is to say at the level of their part called “supply line”, a direction which is exiting towards the outside of the antenna for one of the branches, and a direction returning towards the inside of the antenna for the other branch.
- a first access splits into branches of the same feed direction V and of the same outgoing direction
- the second access splits into branches of the same feed direction H but of opposite direction among the incoming and outgoing directions.
- the branches from the access H have two different directions when traversed from the access, one entering and the other leaving the antenna considered.
- the currents generated in these two branches due to the fact from the presence of the currents i1 / 2 in the branches V are currents which are inverse.
- a current i2 / 2 directed towards the access is generated, while in the second branch, a current i2 / 2 moving away from the access is generated.
- the two I2 / 2 currents having an access / antenna direction for one and an antenna / access direction for the other, only a difference between the modules of these two currents could penetrate into access 210 (access H).
- the two antennas have the same structure and the two branches of each access are similar.
- the current separates well into two equal currents.
- the coupling is very similar in the two antennas.
- a parasitic coupling is created, identical in module for reasons of symmetry.
- the parasitic currents i2 / 2 in the two branches of access 210 (access H) therefore have many similar magnitudes and the subtraction of these two currents does indeed give a parasitic current substantially zero in access 210 (access H).
- This topology based on double elements is particularly suitable for the realization of large networks. As illustrated in Figure 9, where advantageously multiplies the pairs of antennas supplied in this way.
- the feed lines H of the antennas are supplied by a first circuit, and the supply lines V are supplied by a second circuit.
- Each of these two circuits is a tree structure made up of cascaded splits, up to terminal branches connected in pairs to two antennas according to a supply diagram similar to that of FIG. 6.
- the antenna array of FIG. 9 thus presents two accesses which each form a root of the tree structure concerned.
- the terminal branches are preferably located at the same level of tree structure with respect to their respective roots so that the symmetries are well respected.
- the terminal accesses 110 are connected to upper accesses 115 in such a way that any residual parasitic currents in the terminal accesses 110 again subtract at the level of the upper accesses 115.
- these accesses 115 of immediately higher level group together pairs of terminal accesses which extend, each time, for one into incoming branches and for the other into outgoing branches.
- supply circuits are obtained for a column of pairs of antennas, columns which lend themselves particularly well to integration in limited spaces.
- These tree supply circuits described here for the layer of the reception band preferably also apply to the layer of the transmit band.
- a CMS type technology allows a transfer of active elements, very advantageous in terms of costs, which can be applied here separately on each of the transmission and reception layers, allowing to naturally maintain good insulation between the different circuits and making it easier to control ohmic losses if, for example, an active circuit is installed by column of unit antennas.
- H horizontal polarization
- V vertical polarization
- the unitary antenna described in the first part of the description moreover lends itself perfectly to integration on low-loss foam substrates and can be associated, for the transfer of active elements, to the CMS (Surface Mounted Components) technological sector, which is very advantageous in terms of cost and constitutes an additional synergy between the unitary antenna proposed above and the supply circuits proposed here.
- CMS Surface Mounted Components
Landscapes
- Variable-Direction Aerials And Aerial Arrays (AREA)
- Waveguide Aerials (AREA)
- Details Of Aerials (AREA)
Abstract
Description
Claims
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US10/483,346 US7091907B2 (en) | 2001-07-11 | 2002-07-11 | Reactive coupling antenna comprising two radiating elements |
AT02784863T ATE527721T1 (de) | 2001-07-11 | 2002-07-11 | Reaktiv koppelnde antenne mit zwei strahlungselementen |
EP02784863A EP1428294B1 (fr) | 2001-07-11 | 2002-07-11 | Antenne a couplage reactif comportant deux elements rayonnants |
JP2003513079A JP4034265B2 (ja) | 2001-07-11 | 2002-07-11 | 2個の放射要素を備えるリアクティブ結合アンテナ |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR0109208 | 2001-07-11 | ||
FR0109208A FR2827430A1 (fr) | 2001-07-11 | 2001-07-11 | Antenne a couplage reactif comportant deux elements rayonnants |
Publications (2)
Publication Number | Publication Date |
---|---|
WO2003007423A1 true WO2003007423A1 (fr) | 2003-01-23 |
WO2003007423A8 WO2003007423A8 (fr) | 2003-03-20 |
Family
ID=8865366
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/FR2002/002448 WO2003007423A1 (fr) | 2001-07-11 | 2002-07-11 | Antenne a couplage reactif comportant deux elements rayonnants |
Country Status (6)
Country | Link |
---|---|
US (1) | US7091907B2 (fr) |
EP (1) | EP1428294B1 (fr) |
JP (1) | JP4034265B2 (fr) |
AT (1) | ATE527721T1 (fr) |
FR (1) | FR2827430A1 (fr) |
WO (1) | WO2003007423A1 (fr) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2014081543A1 (fr) * | 2012-11-26 | 2014-05-30 | Raytheon Company | Élément rayonnant en plaque à polarisation linéaire double et circulaire |
US10553940B1 (en) | 2018-08-30 | 2020-02-04 | Viasat, Inc. | Antenna array with independently rotated radiating elements |
RU2796807C2 (ru) * | 2018-08-30 | 2023-05-29 | Виасат, Инк. | Антенная решетка с независимо вращающимися излучающими элементами |
Families Citing this family (20)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP4337817B2 (ja) * | 2003-04-24 | 2009-09-30 | 旭硝子株式会社 | アンテナ装置 |
EP1744399A1 (fr) * | 2005-07-12 | 2007-01-17 | Galileo Joint Undertaking | Antenne multibande pour un système de positionnement par satellite |
FI20055637A0 (fi) * | 2005-12-02 | 2005-12-02 | Nokia Corp | Kaksipolarisaatio-mikroliuska-patch-antennirakenne |
KR20080005812A (ko) * | 2006-07-10 | 2008-01-15 | 삼성전자주식회사 | 이동 통신 단말기용 이중 방사형 내장 안테나 |
US7626549B2 (en) * | 2007-03-28 | 2009-12-01 | Eswarappa Channabasappa | Compact planar antenna for single and multiple polarization configurations |
WO2010116373A1 (fr) | 2009-04-07 | 2010-10-14 | Galtronics Corporation Ltd. | Antenne à couplage réparti |
US8482475B2 (en) * | 2009-07-31 | 2013-07-09 | Viasat, Inc. | Method and apparatus for a compact modular phased array element |
CN102347527B (zh) * | 2010-03-25 | 2014-05-14 | 索尼移动通信日本株式会社 | 天线装置和移动装置 |
US8570225B2 (en) * | 2010-03-25 | 2013-10-29 | Sony Corporation | Antenna device and mobile device |
JP5596857B2 (ja) * | 2010-07-01 | 2014-09-24 | ノキア シーメンス ネットワークス オサケユキチュア | アンテナ構成体 |
CN103403898B (zh) | 2011-01-27 | 2016-10-19 | 盖尔创尼克斯有限公司 | 宽带双极化天线 |
US9692112B2 (en) * | 2015-04-08 | 2017-06-27 | Sony Corporation | Antennas including dual radiating elements for wireless electronic devices |
US9843111B2 (en) * | 2015-04-29 | 2017-12-12 | Sony Mobile Communications Inc. | Antennas including an array of dual radiating elements and power dividers for wireless electronic devices |
NO345389B1 (en) | 2017-03-15 | 2021-01-11 | Norbit Its | Patch antenna feed |
CN107732465B (zh) * | 2017-09-15 | 2020-04-21 | 北京空间飞行器总体设计部 | 一种双频段双极化快速跌落矩形赋形阵列天线 |
US11233310B2 (en) * | 2018-01-29 | 2022-01-25 | The Boeing Company | Low-profile conformal antenna |
CN110400779B (zh) * | 2018-04-25 | 2022-01-11 | 华为技术有限公司 | 封装结构 |
US10992025B2 (en) * | 2019-04-12 | 2021-04-27 | Verily Life Sciences Llc | Antenna with extended range |
US11276933B2 (en) | 2019-11-06 | 2022-03-15 | The Boeing Company | High-gain antenna with cavity between feed line and ground plane |
CN111355027B (zh) * | 2020-03-11 | 2022-10-21 | 中天宽带技术有限公司 | 自去耦天线阵列 |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0605338A1 (fr) * | 1992-12-29 | 1994-07-06 | France Telecom | Antenne plaquée à double polarisation et dispositif d'émission/réception correspondant |
WO1999066594A1 (fr) * | 1998-06-12 | 1999-12-23 | Kunjie Zhuang | Element d'antenne en reseau microbande a large gamme de frequences |
US6054953A (en) * | 1998-12-10 | 2000-04-25 | Allgon Ab | Dual band antenna |
US6091373A (en) * | 1990-10-18 | 2000-07-18 | Alcatel Espace | Feed device for a radiating element operating in dual polarization |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5043738A (en) * | 1990-03-15 | 1991-08-27 | Hughes Aircraft Company | Plural frequency patch antenna assembly |
US5661493A (en) * | 1994-12-02 | 1997-08-26 | Spar Aerospace Limited | Layered dual frequency antenna array |
-
2001
- 2001-07-11 FR FR0109208A patent/FR2827430A1/fr active Pending
-
2002
- 2002-07-11 US US10/483,346 patent/US7091907B2/en not_active Expired - Fee Related
- 2002-07-11 JP JP2003513079A patent/JP4034265B2/ja not_active Expired - Fee Related
- 2002-07-11 AT AT02784863T patent/ATE527721T1/de not_active IP Right Cessation
- 2002-07-11 WO PCT/FR2002/002448 patent/WO2003007423A1/fr active Application Filing
- 2002-07-11 EP EP02784863A patent/EP1428294B1/fr not_active Expired - Lifetime
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6091373A (en) * | 1990-10-18 | 2000-07-18 | Alcatel Espace | Feed device for a radiating element operating in dual polarization |
EP0605338A1 (fr) * | 1992-12-29 | 1994-07-06 | France Telecom | Antenne plaquée à double polarisation et dispositif d'émission/réception correspondant |
WO1999066594A1 (fr) * | 1998-06-12 | 1999-12-23 | Kunjie Zhuang | Element d'antenne en reseau microbande a large gamme de frequences |
US6054953A (en) * | 1998-12-10 | 2000-04-25 | Allgon Ab | Dual band antenna |
Cited By (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2014081543A1 (fr) * | 2012-11-26 | 2014-05-30 | Raytheon Company | Élément rayonnant en plaque à polarisation linéaire double et circulaire |
GB2523017A (en) * | 2012-11-26 | 2015-08-12 | Raytheon Co | Dual linear and circularly polarized patch radiator |
US9130278B2 (en) | 2012-11-26 | 2015-09-08 | Raytheon Company | Dual linear and circularly polarized patch radiator |
GB2523017B (en) * | 2012-11-26 | 2017-05-31 | Raytheon Co | Dual linear and circularly polarized patch radiator |
US10553940B1 (en) | 2018-08-30 | 2020-02-04 | Viasat, Inc. | Antenna array with independently rotated radiating elements |
WO2020046467A1 (fr) * | 2018-08-30 | 2020-03-05 | Viasat, Inc. | Réseau d'antennes à éléments rayonnants à rotation indépendante |
US10727581B2 (en) | 2018-08-30 | 2020-07-28 | Viasat, Inc. | Antenna array with independently rotated radiating elements technical field |
CN112703638A (zh) * | 2018-08-30 | 2021-04-23 | 维尔塞特公司 | 具有独立旋转的辐射元件的天线阵列 |
US11404775B2 (en) | 2018-08-30 | 2022-08-02 | Viasat, Inc. | Antenna array with independently rotated radiating elements |
RU2796807C2 (ru) * | 2018-08-30 | 2023-05-29 | Виасат, Инк. | Антенная решетка с независимо вращающимися излучающими элементами |
US11688938B2 (en) | 2018-08-30 | 2023-06-27 | Viasat, Inc. | Antenna array with independently rotated radiating elements |
CN112703638B (zh) * | 2018-08-30 | 2023-12-22 | 维尔塞特公司 | 具有独立旋转的辐射元件的天线阵列 |
EP4304017A3 (fr) * | 2018-08-30 | 2024-03-27 | ViaSat, Inc. | Réseau d'antennes à éléments rayonnants à rotation indépendante |
IL281119B1 (en) * | 2018-08-30 | 2024-07-01 | Viasat Inc | Array of antennas with independent motorized radiating elements |
Also Published As
Publication number | Publication date |
---|---|
US7091907B2 (en) | 2006-08-15 |
EP1428294B1 (fr) | 2011-10-05 |
FR2827430A1 (fr) | 2003-01-17 |
JP2004535131A (ja) | 2004-11-18 |
JP4034265B2 (ja) | 2008-01-16 |
ATE527721T1 (de) | 2011-10-15 |
WO2003007423A8 (fr) | 2003-03-20 |
US20040239565A1 (en) | 2004-12-02 |
EP1428294A1 (fr) | 2004-06-16 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
EP1428294B1 (fr) | Antenne a couplage reactif comportant deux elements rayonnants | |
EP0089084B1 (fr) | Structure d'antenne plane hyperfréquences | |
FR2652197A1 (fr) | Transformateurs du type symetrique-dissymetrique perfectionnes. | |
EP1605546A1 (fr) | Dispositif rayonnant à alimentation orthogonale | |
EP2345104B1 (fr) | Systeme d'antenne dipole differentielle a structure rayonnante coplanaire et dispositif d'emission/reception | |
CA2194113A1 (fr) | Antenne reseau plane hyperfrequence receptrice et/ou emettrice, et son application a la reception de satellites de television geostationnaires | |
FR2810164A1 (fr) | Perfectionnement aux antennes source d'emission/reception d'ondes electromagnetiques pour systemes de telecommunications par satellite | |
EP1228552A1 (fr) | Antenne imprimee bi-bande | |
CA2869648A1 (fr) | Repartiteur de puissance compact bipolarisation, reseau de plusieurs repartiteurs, element rayonnant compact et antenne plane comportant un tel repartiteur | |
FR2863110A1 (fr) | Antenne en reseau multi-bande a double polarisation | |
FR2751471A1 (fr) | Dispositif rayonnant a large bande susceptible de plusieurs polarisations | |
EP2059973B1 (fr) | Système multi-antenne à diversité de polarisation | |
EP0012093A1 (fr) | Amplificateur distribué pour hyperfréquences, et dispositif d'amplification comportant un tel amplificateur | |
WO2012069492A1 (fr) | Antenne planaire a bande passante elargie | |
EP0360692A1 (fr) | Antenne composite à duplexage à polarisation circulaire | |
FR2736212A1 (fr) | Coupleur balun hyperfrequence integre, en particulier pour antenne dipole | |
EP2291923B1 (fr) | Bloc frontal avec antenne intégrée | |
EP4024604A1 (fr) | Jonction hyperfréquence en té magique large bande | |
FR3073085B1 (fr) | Ensemble guide d'onde et procede d'assemblage associe | |
FR2901062A1 (fr) | Dispositif rayonnant a cavite(s) resonnante(s) a air a fort rendement de surface, pour une antenne reseau | |
FR3110290A1 (fr) | Transducteur orthomode large bande | |
FR3091046A1 (fr) | Antenne microruban élémentaire et antenne réseau | |
WO2012095358A1 (fr) | Antenne microruban a double polarisation et a double bande | |
FR2705167A1 (fr) | Antenne plaquée large bande à encombrement réduit, et dispositif d'émission/réception correspondant. | |
FR2906937A1 (fr) | Decouplage des reseaux d'elements rayonnants d'une antenne |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
AK | Designated states |
Kind code of ref document: A1 Designated state(s): AE AG AL AM AT AU AZ BA BB BG BR BY BZ CA CH CN CO CR CU CZ DE DK DM DZ EC EE ES FI GB GD GE GH GM HR HU ID IL IN IS JP KE KG KP KR KZ LC LK LR LS LT LU LV MA MD MG MK MN MW MX MZ NO NZ OM PH PL PT RO RU SD SE SG SI SK SL TJ TM TN TR TT TZ UA UG US UZ VN YU ZA ZM ZW |
|
AL | Designated countries for regional patents |
Kind code of ref document: A1 Designated state(s): GH GM KE LS MW MZ SD SL SZ TZ UG ZM ZW AM AZ BY KG KZ MD RU TJ TM AT BE BG CH CY CZ DE DK EE ES FI FR GB GR IE IT LU MC NL PT SE SK TR BF BJ CF CG CI CM GA GN GQ GW ML MR NE SN TD TG |
|
121 | Ep: the epo has been informed by wipo that ep was designated in this application | ||
CFP | Corrected version of a pamphlet front page | ||
CR1 | Correction of entry in section i |
Free format text: PAT. BUL. 04/2003 ADD "DECLARATION UNDER RULE 4.17: - OF INVENTORSHIP (RULE 4.17(IV)) FOR US ONLY." |
|
DFPE | Request for preliminary examination filed prior to expiration of 19th month from priority date (pct application filed before 20040101) | ||
WWE | Wipo information: entry into national phase |
Ref document number: 2003513079 Country of ref document: JP |
|
WWE | Wipo information: entry into national phase |
Ref document number: 2002784863 Country of ref document: EP |
|
REG | Reference to national code |
Ref country code: DE Ref legal event code: 8642 |
|
WWE | Wipo information: entry into national phase |
Ref document number: 10483346 Country of ref document: US |
|
WWP | Wipo information: published in national office |
Ref document number: 2002784863 Country of ref document: EP |