EP0899814A1 - Structure rayonnante - Google Patents
Structure rayonnante Download PDFInfo
- Publication number
- EP0899814A1 EP0899814A1 EP98402148A EP98402148A EP0899814A1 EP 0899814 A1 EP0899814 A1 EP 0899814A1 EP 98402148 A EP98402148 A EP 98402148A EP 98402148 A EP98402148 A EP 98402148A EP 0899814 A1 EP0899814 A1 EP 0899814A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- pads
- pellets
- center
- structure according
- pad
- 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
Images
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q19/00—Combinations of primary active antenna elements and units with secondary devices, e.g. with quasi-optical devices, for giving the antenna a desired directional characteristic
- H01Q19/10—Combinations of primary active antenna elements and units with secondary devices, e.g. with quasi-optical devices, for giving the antenna a desired directional characteristic using reflecting surfaces
- H01Q19/18—Combinations of primary active antenna elements and units with secondary devices, e.g. with quasi-optical devices, for giving the antenna a desired directional characteristic using reflecting surfaces having two or more spaced reflecting surfaces
- H01Q19/185—Combinations of primary active antenna elements and units with secondary devices, e.g. with quasi-optical devices, for giving the antenna a desired directional characteristic using reflecting surfaces having two or more spaced reflecting surfaces wherein the surfaces are plane
-
- 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
- H01Q15/22—Reflecting surfaces; Equivalent structures functioning also as polarisation filter
-
- 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
Definitions
- the invention relates to an antenna, or structure radiant, comprising an excitation patch associated with a set of radiating secondary pads.
- the antennas printed with tablets are of use common because their cost of realization is low and they present reduced mass and volume, which is particularly useful for space applications. They are generally made by engraving or lithography of pastilles, or paving stones conductors, on dielectric substrates.
- This antenna is well suited to radiate in a directivity range from 9 to 13 dbi, range that would be difficult to obtain by networking elementary radiators.
- antennas of this type allow to obtain a good quality circular polarization, i.e. a very low ellipticity rate in the axis of the antenna, perpendicular to the planes of the pellets.
- rate ellipticity increases significantly for directions inclined to the axis of the antenna.
- the invention provides a radiating structure allowing to maintain the purity of circular polarization over a wide angular sector.
- a surface is provided reflective surrounding the excitation patch and the pellets secondary constitute semi-reflective surfaces for the excitation wave, the relative position of the pellets secondary to each other and to the reflecting surface being such that the transmitted waves are in phase.
- the secondary pellets are not excited by an electromagnetic coupling but are excited in dichroic fashion.
- this excitation mode makes it possible to maintain good circular polarization quality over a wide angular sector, with inclinations up to 50 ° from to the axis, or more.
- the quality of the radiated signal depends on the signal applied to the excitation pad.
- the emitting pad is found in (or in the vicinity of) a foreground constituting the reflective surface, or ground plane, and secondary patches lie at a distance of approximately half the length ( ⁇ ) of the wave to be transmitted.
- a wave emitted by the excitation patch towards a secondary patch travels a distance of half a wavelength.
- the beam correspondent is partially transmitted, and therefore radiated outward, and is partially reflected by the patch secondary.
- the reflected beam is directed towards the surface reflective from where it is returned to the same secondary patch or another secondary patch, from which it is transmitted and therefore radiated.
- the beam reflected on a secondary patch and which returns to another secondary patch thus traverses a wavelength. In this way, the two rays transmitted are well in phase.
- the total opening of the radiated beam depends on the coefficient of reflection of the secondary pellets.
- the opening could be all the more important as the coefficient of reflection is bigger. Indeed the part of the beam which is furthest from the central part, where the patch is located is the one who undergoes the greatest number of reflections and which is therefore the most weakened by these reflections.
- the primary pastilles (s) and secondary are arranged in a conductive cavity so orient the radiation emitted and / or limit the coupling with other neighboring elements.
- the reflection of excitation waves on the walls of the cavity causes an alteration in the quality of polarization. That is why, in this embodiment, provision is made to give the minus the peripheral secondary pads a shape and a orientation to restore circular polarization.
- the peripheral secondary pads all have substantially the same shapes and dimensions and are elongated along a determined axis, of distinct orientation or not of the radial orientation, and the angle between the axes of two pads successive corresponds to the angle of which the vertex is made up by the center around which the pellets are arranged secondary and whose sides are the straight lines joining this vertex at the centers of the pastilles concerned.
- peripheral secondary pads increase the directivity of the antenna because the illumination secondary pastilles is standardized.
- the invention provides means to compensate for the phase shift.
- a first embodiment of this compensation consists in making the resonant frequency depend on each secondary dot of its distance from the center around of which are placed the secondary pellets, this frequency of resonance being all the more important as the distance to center is great.
- a second embodiment of phase shift compensation consists in modulating the distance between the reflecting surface of the surface of the secondary pellets, for example in providing a distance between the secondary pads and the surface reflective which is all the weaker the larger the distance of the secondary pads to the center.
- the antenna shown in these figures is intended for emit waves in the microwave domain, around with a central frequency of 8 GHz.
- the pad 20 is deposited on one face 24 1 of a dielectric substrate 24 while the pads 22 1 to 22 7 are arranged on the opposite face 24 2 of the dielectric 24. All the pads constitute metallic deposits and have a shape of a circle of the same diameter in the example.
- the pad 22 1 is in line with the pad 20, that is to say that the centers of the pads 20 and 22 1 are on the same normal to the plane of the parallel faces 24 1 and 24 2 .
- the other secondary pads 22 2 to 22 7 are distributed regularly around the central pad 22 1 .
- the distance separating the faces 24 1 and 24 2 is substantially equal to a half wavelength ⁇ / 2.
- the face 24 1 is a short distance from a conductive face 26 forming a ground plane.
- the characteristics of the secondary pads 22 1 to 22 7 are chosen so that these pads are semi-reflecting, that is to say that a beam 28 received by a secondary pad is partially reflected, according to a beam 30, by this secondary patch and is partially transmitted in a beam 32.
- This characteristic makes it possible to maintain a circular or linear polarization purity over a wide angular sector going up to an inclination of approximately 50 ° relative to the normal on the faces 24 1 and 24 2 .
- the excitation signal applied to patch 20 can be applied to a single access of the latter, provided that this pellet is given a shape that deviates from the circular shape, with an inclined axis for example about 45 ° from the direction of the current incident.
- the secondary pads 22 1 to 22 7 have a semi-reflecting character.
- "Semi" reflective does not necessarily mean properties such that 50% of the energy is reflected and 50% of the energy is transmitted.
- the reflection coefficient can be adjusted as required, in particular the desired opening for the antenna. In particular, the reflection coefficient will be higher the greater the number of secondary pads which follow one another in the radial direction. Indeed, with each reflection on a secondary patch, the energy of the beam decreases in proportion to the reflection coefficient. A high coefficient of reflection will therefore be required for sufficient energy to remain for the beams reflected several times on the secondary pads. It can be noted here that the reflection coefficient on the ground plane is practically 100%.
- the excitation patch and the secondary pellets can be deposited on substrates different separated by vacuum or air.
- the antenna is housed in a metal cavity 40.
- This cavity makes it possible to orient the beam transmitted and limit the coupling with other neighboring antennas, for example identical or similar antennas forming a network in which the antenna represented is located.
- the first exciting pad 42 in a lower position (that is to say the one furthest from the surface of the secondary pads), receives the excitation signal while the second exciter pad 44 is coupled, by proximity effect, or electromagnetic coupling, with the pitch; lower tille.
- the secondary pads 46 1 to 46 7 are in a plane 48 distant from the plane 45 of the pad 44 by about half a wavelength.
- the patch 42 constitutes a metallic deposit on a substrate 47 and this pellet has the shape of a semi-curved rectangle with two sides parallel rectilinear 50 and 52 and two curvilinear sides 54 and 56 forming arcs of the same circle.
- the vertex 58 common to the sides 50 and 54 is connected to a conductor 60 also constituted by a metallic deposit on the substrate 47.
- Conductor 60 shows the direction of the diagonal of the curved rectangle which ends at the vertex 58.
- the angle between this diagonal and the sides 50 and 52 is approximately 30 °.
- a deposit is also provided conductor indented, on the one hand, by a circle 62 surrounding the patch 42 and, on the other hand, by two channels 64 and 66 having the diagonal direction, channel 64 being provided to leave pass the driver 60.
- the pad 44 ( Figure 5) has a shape similar to that of the patch 42. Its dimensions are slightly less than those of this patch 42. Its center is at the right of the center of the lower pad.
- the orientation of the straight sides 70 and 72 of the pad 44 differs from the orientation of the straight sides of the patch 42: the inclination of the sides 70 and 72 by relative to the direction of the driver 60 is about 45 °.
- the elongated or chamfered shape of the pellets 42 and 44 makes it possible to excite the pellets using a wave with circular polarization with a single access (vertex 58, FIG. 4) without altering the quality of this circular polarization after excitation secondary pads 46 1 to 46 7 .
- the central secondary pad 46 1 in line with the pad 44, has a circular shape while the peripheral secondary pads 46 2 to 46 7 have an elongated shape, similar to that of the pads 42 and 44, that is to say in the shape of a semi-curved rectangle ( Figure 6).
- the rectilinear sides of the peripheral pads which are diametrically opposite have the same orientation.
- Two successive peripheral pads have rectilinear sides with different orientations.
- the angle formed between the rectilinear sides of these successive peripheral pads is practically equal to the angle at the center a (60 ° in the example) formed by the lines 73 and 74 connecting the centers of the corresponding pads 46 2 and 46 3 to the center of central patch 46 1 .
- peripheral pads have the same inclination with respect to their radial direction (the direction joining the center of the patch to the center of the patch central).
- the double resonator formed by the pads 42 and 44 allows, compared to a single pellet, to increase the strip bandwidth of the antenna.
- the shape and relative orientation of the pellets 42 and 44 allows excitation by a wave polarized circularly by a single access 58 (FIG. 4).
- FIG. 7 to 9 relates to a large aperture antenna, that is to say comprising a large number of secondary pads and whose radial extension, from the central pad 80 1 , is significant .
- 19 secondary pads 80 1 to 80 19 are provided with a central pad 80 1 , surrounded by 6 intermediate pads 80 2 to 80 7 , which are surrounded by 12 peripheral pads 80 8 to 80 19 .
- a beam emitted from the excitation pad (not shown) towards the central secondary pad 80 1 is reflected by this central pad 80 1 from which it is returned to the ground plane and, from the ground plane, the beam is reflected towards a intermediate patch.
- the beam undergoes a reflection again towards the ground plane and finally towards a peripheral patch.
- the reflected beams are not strictly perpendicular in terms of the pellets it follows that the path electric traversed by the beam between two secondary pads adjacent is greater than one wavelength.
- the phase shift which results is not very sensitive since a secondary pellet towards an adjacent patch but it becomes sensitive when the phase shifts add up. This results in side lobes troublesome.
- a first category of means of recovery phase we give a lower resonance frequency in the center than on the outskirts. In other words we adapt the wavelength to the electrical paths traveled so that the waves emitted by all the secondary pads are in phase.
- the variation in resonant frequencies is favorable broad bandwidth.
- all the pellets have substantially the same outside diameter and have an annular shape, but the diameter of the central opening depends on the position of the patch.
- the diameter of the opening of the patch 80 1 is greater than the diameter of the opening of the peripheral pads 80 2 to 80 7 and the diameter of the opening of the peripheral pads 80 8 to 80 19 is the smallest.
- the frequency is varied resonance by varying the outside diameter of the tablets, the central tablet having the largest diameter.
- phase shifts vary the distance between the reflecting surface and semi-reflective pads from the center towards the periphery.
- the secondary pads lie in a plane 90 and the reflecting surface 92 has circular steps, around the axis 94. These steps are all the closer to plane 90 the further they are from axis 94.
- the surface reflective 96 is flat while the secondary pads are on circular bleachers 98.
- the central tablet is furthest from plane 96 and the peripheral pads are closest to plan 96.
- surfaces are provided inclined. It is also possible to provide surfaces inclined or bleachers for both the reflective surface and for secondary tablets.
Landscapes
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Aerials With Secondary Devices (AREA)
- Waveguide Aerials (AREA)
- Variable-Direction Aerials And Aerial Arrays (AREA)
Abstract
Description
Claims (14)
- Structure rayonnante, ou antenne, comportant une pastille excitatrice (20 ; 44) destinée à recevoir un signal d'excitation et une pluralité de pastilles secondaires (22 ; 46 ; 80) destinées à rayonner les ondes reçues de la pastille excitatrice, caractérisée en ce qu'elle comporte une surface réfléchissante (26) au voisinage de la pastille excitatrice et en ce que les pastilles secondaires constituent des surfaces semi réfléchissantes, l'ensemble étant tel que les ondes rayonnées (32, 36) par les pastilles secondaires sont sensiblement en phase.
- Structure selon la revendication 1, caractérisée en ce que la distance entre, d'une part, la pastille excitatrice et la surface réfléchissante et, d'autre part, les pastilles secondaires, est sensiblement égale à une demie longueur d'onde à transmettre.
- Structure selon la revendication 2, caractérisée en ce que les pastilles secondaires sont disposées concentriquement et en ce qu'elles présentent un coefficient de réflexion qui est d'autant plus élevé qu'est plus élevé le nombre de pastilles secondaires s'étendant en direction radiale.
- Structure selon l'une quelconque des revendications 1 à 3, caractérisée en ce que la pluralité de pastilles secondaires comporte, d'une part, une pastille centrale (22 ; 46 ; 80) et, d'autre part, au moins une multiplicité de pastilles périphériques autour de la pastille centrale.
- Structure selon l'une quelconque des revendications précédentes, caractérisée en ce que la pastille excitatrice (42) présente une forme allongée selon une direction et en ce que cette pastille excitatrice est alimentée, par un accès unique (58), par une onde à polarisation circulaire.
- Structure selon l'une quelconque des revendications précédentes, caractérisée en ce que la pastille excitatrice (44) reçoit l'énergie d'excitation par l'intermédiaire d'une autre pastille (42) séparée de la pastille excitatrice d'une distance faible par rapport à la distance entre la pastille excitatrice et les pastilles secondaires.
- Structure selon l'une quelconque des revendications précédentes, caractérisée en ce qu'elle comporte une cavité conductrice (40) logeant la pastille excitatrice et les pastilles secondaires.
- Structure selon la revendication 7, caractérisée en ce que les pastilles secondaires présentent une multiplicité de pastilles périphériques (462 à 467) de formes et d'orientations telles qu'elles compensent la dépolarisation induite par la cavité conductrice (40).
- Structure selon la revendication 8, caractérisée en ce que les pastilles périphériques sont allongées selon une direction inclinée par rapport à la direction radiale reliant le centre de ces pastilles au centre de l'ensemble de pastilles secondaires, l'inclinaison de toutes les pastilles périphériques par rapport à leur direction radiale étant la même.
- Structure selon l'une quelconque des revendications précédentes, caractérisée en ce que les pastilles secondaires sont disposées autour d'un centre avec au moins un ensemble de pastille(s) à une première distance du centre et au moins une multiplicité de pastilles périphériques plus éloignées du centre, la fréquence de résonance de la (des) pastille(s) la (les) plus proche(s) du centre étant plus faible que la fréquence de résonance des pastilles plus éloignées du centre.
- Structure selon la revendication 10, caractérisée en ce que les pastilles ont une forme circulaire et en ce que les pastilles les plus proches du centre ont un diamètre extérieur plus élevé que les pastilles plus éloignées du centre.
- Structure selon la revendication 10, caractérisée en ce que les pastilles sont en forme d'anneaux et ont toutes sensiblement le même diamètre extérieur, le diamètre intérieur des pastilles les plus proches du centre étant plus élevé que le diamètre intérieur des pastilles les plus éloignées du centre.
- Structure selon l'une quelconque des revendications précédentes, caractérisée en ce que les pastilles secondaires sont disposées autour d'un centre et en ce que la distance des pastilles secondaires à la surface réfléchissante diminue depuis le centre vers la périphérie.
- Structure selon la revendication 13, caractérisée en ce que la surface réfléchissante et/ou la surface sur laquelle sont disposées les pastilles secondaires présentent des gradins (92 ; 98).
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR9710842A FR2767970B1 (fr) | 1997-09-01 | 1997-09-01 | Structure rayonnante |
FR9710842 | 1997-09-01 |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0899814A1 true EP0899814A1 (fr) | 1999-03-03 |
EP0899814B1 EP0899814B1 (fr) | 2012-11-14 |
Family
ID=9510634
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP98402148A Expired - Lifetime EP0899814B1 (fr) | 1997-09-01 | 1998-08-31 | Structure rayonnante |
Country Status (5)
Country | Link |
---|---|
US (1) | US6061027A (fr) |
EP (1) | EP0899814B1 (fr) |
CA (1) | CA2243603C (fr) |
FR (1) | FR2767970B1 (fr) |
NO (1) | NO984006L (fr) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2010029125A1 (fr) * | 2008-09-12 | 2010-03-18 | Advanced Automotive Antennas, S.L. | Antenne surbaissée encastrée à renfoncement résonnant |
EP2194602A1 (fr) | 2008-12-05 | 2010-06-09 | Thales | Antenne à partage de sources et procède d'élaboration d'une antenne à partage de sources pour l'élaboration de multi-faisceaux |
Families Citing this family (28)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1428291A4 (fr) * | 2001-08-31 | 2004-12-08 | Univ Columbia | Systemes et procedes permettant de fournir une excitation d'antenne a plaque optimisee a des plaques couplees les unes aux autres |
US6624787B2 (en) * | 2001-10-01 | 2003-09-23 | Raytheon Company | Slot coupled, polarized, egg-crate radiator |
DE10334979B4 (de) * | 2003-07-29 | 2009-10-29 | Wengler, Peter, Dipl.-Phys. Dr.-Ing. | Richtantenne |
EP1508940A1 (fr) * | 2003-08-19 | 2005-02-23 | Era Patents Limited | Contrôleur de rayonnement comprenant des réactances sur une surface dielectrique |
JP4192212B2 (ja) * | 2004-01-28 | 2008-12-10 | 日本電波工業株式会社 | マイクロストリップライン型の平面アレーアンテナ |
US7671696B1 (en) | 2006-09-21 | 2010-03-02 | Raytheon Company | Radio frequency interconnect circuits and techniques |
US9172145B2 (en) | 2006-09-21 | 2015-10-27 | Raytheon Company | Transmit/receive daughter card with integral circulator |
US9019166B2 (en) | 2009-06-15 | 2015-04-28 | Raytheon Company | Active electronically scanned array (AESA) card |
US8279131B2 (en) * | 2006-09-21 | 2012-10-02 | Raytheon Company | Panel array |
US8378893B2 (en) * | 2007-10-11 | 2013-02-19 | Raytheon Company | Patch antenna |
US8159409B2 (en) * | 2009-01-20 | 2012-04-17 | Raytheon Company | Integrated patch antenna |
US7859835B2 (en) * | 2009-03-24 | 2010-12-28 | Allegro Microsystems, Inc. | Method and apparatus for thermal management of a radio frequency system |
US8686914B2 (en) * | 2009-06-25 | 2014-04-01 | National Taiwan University | Antenna module and design method thereof |
TWI420740B (zh) * | 2009-06-25 | 2013-12-21 | Univ Nat Taiwan | 天線模組 |
US8537552B2 (en) * | 2009-09-25 | 2013-09-17 | Raytheon Company | Heat sink interface having three-dimensional tolerance compensation |
US8508943B2 (en) | 2009-10-16 | 2013-08-13 | Raytheon Company | Cooling active circuits |
CN101752671B (zh) * | 2010-01-13 | 2012-11-28 | 东南大学 | 可实现极化变换的高增益谐振天线 |
US8427371B2 (en) | 2010-04-09 | 2013-04-23 | Raytheon Company | RF feed network for modular active aperture electronically steered arrays |
FR2959611B1 (fr) | 2010-04-30 | 2012-06-08 | Thales Sa | Element rayonnant compact a cavites resonantes. |
US8363413B2 (en) | 2010-09-13 | 2013-01-29 | Raytheon Company | Assembly to provide thermal cooling |
US8810448B1 (en) | 2010-11-18 | 2014-08-19 | Raytheon Company | Modular architecture for scalable phased array radars |
US8355255B2 (en) | 2010-12-22 | 2013-01-15 | Raytheon Company | Cooling of coplanar active circuits |
US9124361B2 (en) | 2011-10-06 | 2015-09-01 | Raytheon Company | Scalable, analog monopulse network |
US9130278B2 (en) | 2012-11-26 | 2015-09-08 | Raytheon Company | Dual linear and circularly polarized patch radiator |
TWI514680B (zh) * | 2014-03-17 | 2015-12-21 | Wistron Neweb Corp | 多頻天線及多頻天線配置方法 |
CN107437659B (zh) | 2016-05-26 | 2020-07-03 | 香港中文大学 | 用于降低天线阵列中互耦的设备和方法 |
US10367259B2 (en) * | 2017-01-12 | 2019-07-30 | Arris Enterprises Llc | Antenna with enhanced azimuth gain |
KR102346283B1 (ko) * | 2018-02-02 | 2022-01-04 | 삼성전자 주식회사 | 반사체를 포함하는 안테나 모듈 및 이를 포함하는 전자장치 |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0627783A1 (fr) * | 1993-06-03 | 1994-12-07 | Alcatel N.V. | Structure rayonnante multicouches à directivité variable |
WO1996039728A1 (fr) * | 1995-06-05 | 1996-12-12 | Her Majesty The Queen In Right Of Canada As Represented By The Minister Of Industry Through The Communications Research Centre | Antenne a cavite a plaques en microruban a gain moderement eleve |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4623893A (en) * | 1983-12-06 | 1986-11-18 | State Of Israel, Ministry Of Defense, Rafael Armament & Development Authority | Microstrip antenna and antenna array |
US5005019A (en) * | 1986-11-13 | 1991-04-02 | Communications Satellite Corporation | Electromagnetically coupled printed-circuit antennas having patches or slots capacitively coupled to feedlines |
US4847626A (en) * | 1987-07-01 | 1989-07-11 | Motorola, Inc. | Microstrip balun-antenna |
JPH01103006A (ja) * | 1987-10-15 | 1989-04-20 | Matsushita Electric Works Ltd | 平面アンテナ |
US5278569A (en) * | 1990-07-25 | 1994-01-11 | Hitachi Chemical Company, Ltd. | Plane antenna with high gain and antenna efficiency |
FR2677491B1 (fr) * | 1991-06-10 | 1993-08-20 | Alcatel Espace | Antenne hyperfrequence elementaire bipolarisee. |
-
1997
- 1997-09-01 FR FR9710842A patent/FR2767970B1/fr not_active Expired - Fee Related
-
1998
- 1998-08-31 US US09/143,657 patent/US6061027A/en not_active Expired - Lifetime
- 1998-08-31 CA CA002243603A patent/CA2243603C/fr not_active Expired - Fee Related
- 1998-08-31 EP EP98402148A patent/EP0899814B1/fr not_active Expired - Lifetime
- 1998-08-31 NO NO984006A patent/NO984006L/no not_active Application Discontinuation
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0627783A1 (fr) * | 1993-06-03 | 1994-12-07 | Alcatel N.V. | Structure rayonnante multicouches à directivité variable |
WO1996039728A1 (fr) * | 1995-06-05 | 1996-12-12 | Her Majesty The Queen In Right Of Canada As Represented By The Minister Of Industry Through The Communications Research Centre | Antenne a cavite a plaques en microruban a gain moderement eleve |
Non-Patent Citations (1)
Title |
---|
LEE ET AL.: "Antennas and propagation society symposium,1991 digest, no.1", CIRCULAR POLARISATION CHARACTERISTICS OF PARASITIC MICROSTRIP ANTENNAS, no. 1, pages 310 - 313, XP000242438 * |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2010029125A1 (fr) * | 2008-09-12 | 2010-03-18 | Advanced Automotive Antennas, S.L. | Antenne surbaissée encastrée à renfoncement résonnant |
US8836589B2 (en) | 2008-09-12 | 2014-09-16 | Advanced Automotive Antennas, S.L. | Flush-mounted low-profile resonant hole antenna |
EP2194602A1 (fr) | 2008-12-05 | 2010-06-09 | Thales | Antenne à partage de sources et procède d'élaboration d'une antenne à partage de sources pour l'élaboration de multi-faisceaux |
FR2939568A1 (fr) * | 2008-12-05 | 2010-06-11 | Thales Sa | Antenne a partage de sources et procede d'elaboration d'une antenne a partage de sources pour l'elaboration de multi-faisceaux |
US8299963B2 (en) | 2008-12-05 | 2012-10-30 | Thales | Antenna with shared feeds and method of producing an antenna with shared feeds for generating multiple beams |
EP2194602B1 (fr) | 2008-12-05 | 2015-09-02 | Thales | Antenne à partage de sources et procède d'élaboration d'une antenne à partage de sources pour l'élaboration de multi-faisceaux |
Also Published As
Publication number | Publication date |
---|---|
CA2243603A1 (fr) | 1999-03-01 |
CA2243603C (fr) | 2007-02-06 |
EP0899814B1 (fr) | 2012-11-14 |
NO984006D0 (no) | 1998-08-31 |
FR2767970B1 (fr) | 1999-10-15 |
FR2767970A1 (fr) | 1999-03-05 |
NO984006L (no) | 1999-03-02 |
US6061027A (en) | 2000-05-09 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
CA2243603C (fr) | Structure rayonnante | |
EP3547450B1 (fr) | Element rayonnant a polarisation circulaire mettant en oeuvre une resonance dans une cavite de fabry perot | |
EP1038333B1 (fr) | Antenne a plaque | |
EP2710676B1 (fr) | Element rayonnant pour antenne reseau active constituee de tuiles elementaires | |
FR2810163A1 (fr) | Perfectionnement aux antennes-sources d'emission/reception d'ondes electromagnetiques | |
WO2011134666A1 (fr) | Element rayonnant compact a cavites resonantes | |
EP0886889A1 (fr) | Antenne reseau imprimee large bande | |
WO2004040694A1 (fr) | Antenne multi-faisceaux a materiau bip | |
EP0430745B1 (fr) | Antenne à polarisation circulaire, notamment pour réseau d'antennes | |
WO2000014825A9 (fr) | Antenne | |
EP1554777B1 (fr) | Antenne a materiau bip multi-faisceaux | |
WO2003028157A1 (fr) | Antenne a large bande ou multi-bandes | |
EP0860893A1 (fr) | Ensemble d'antennes concentriques pour des ondes hyperfréquences | |
FR2518828A1 (fr) | Filtre spatial de frequences et antenne comportant un tel filtre | |
EP0860894B1 (fr) | Antenne miniature résonnante de type microruban de forme annulaire | |
EP0860895A1 (fr) | Antenne résonnante pour l'émission ou la réception d'ondes polarisées | |
EP3902059B1 (fr) | Antenne directive large bande à émission longitudinale | |
EP4046241B1 (fr) | Antenne-reseau | |
EP0337841A1 (fr) | Antenne boucle large bande à alimentation dissymétrique, notamment antenne pour émission, et antenne réseau formée d'une pluralité de telles antennes | |
FR2677493A1 (fr) | Reseau d'elements rayonnants a topologie autocomplementaire, et antenne utilisant un tel reseau. | |
EP0067753A1 (fr) | Source rayonnante hyperfréquence à cavités ouvertes excitée par deux dipoles orthogonaux | |
FR2814593A1 (fr) | Antenne de telecommunication, notamment entre avions | |
FR2815479A1 (fr) | Reflecteur hyperfrequence actif a deux polarisations independantes, notamment pour antenne a balayage electronique | |
FR2854735A1 (fr) | Antenne a materiau bip multi-faisceaux | |
FR2854734A1 (fr) | Systeme d'emission et ou de reception d'ondes electromagnetiques equipe d'une antenne multi-faisceaux a materiau bip |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
AK | Designated contracting states |
Kind code of ref document: A1 Designated state(s): DE ES FR GB IT |
|
AX | Request for extension of the european patent |
Free format text: AL;LT;LV;MK;RO;SI |
|
RAP3 | Party data changed (applicant data changed or rights of an application transferred) |
Owner name: ALCATEL |
|
17P | Request for examination filed |
Effective date: 19990903 |
|
AKX | Designation fees paid |
Free format text: DE ES FR GB IT |
|
RAP1 | Party data changed (applicant data changed or rights of an application transferred) |
Owner name: ALCATEL LUCENT |
|
17Q | First examination report despatched |
Effective date: 20070906 |
|
RAP1 | Party data changed (applicant data changed or rights of an application transferred) |
Owner name: ALCATEL LUCENT |
|
GRAC | Information related to communication of intention to grant a patent modified |
Free format text: ORIGINAL CODE: EPIDOSCIGR1 |
|
GRAP | Despatch of communication of intention to grant a patent |
Free format text: ORIGINAL CODE: EPIDOSNIGR1 |
|
GRAS | Grant fee paid |
Free format text: ORIGINAL CODE: EPIDOSNIGR3 |
|
GRAA | (expected) grant |
Free format text: ORIGINAL CODE: 0009210 |
|
AK | Designated contracting states |
Kind code of ref document: B1 Designated state(s): DE ES FR GB IT |
|
REG | Reference to a national code |
Ref country code: GB Ref legal event code: FG4D Free format text: NOT ENGLISH |
|
REG | Reference to a national code |
Ref country code: DE Ref legal event code: R096 Ref document number: 69842881 Country of ref document: DE Effective date: 20130110 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: ES Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20130225 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: IT Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20121114 |
|
PLBE | No opposition filed within time limit |
Free format text: ORIGINAL CODE: 0009261 |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT |
|
26N | No opposition filed |
Effective date: 20130815 |
|
REG | Reference to a national code |
Ref country code: GB Ref legal event code: 732E Free format text: REGISTERED BETWEEN 20130926 AND 20131002 |
|
REG | Reference to a national code |
Ref country code: FR Ref legal event code: GC Effective date: 20131018 |
|
REG | Reference to a national code |
Ref country code: DE Ref legal event code: R097 Ref document number: 69842881 Country of ref document: DE Effective date: 20130815 |
|
REG | Reference to a national code |
Ref country code: FR Ref legal event code: RG Effective date: 20141016 |
|
REG | Reference to a national code |
Ref country code: FR Ref legal event code: PLFP Year of fee payment: 18 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: GB Payment date: 20150819 Year of fee payment: 18 Ref country code: DE Payment date: 20150821 Year of fee payment: 18 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: FR Payment date: 20150820 Year of fee payment: 18 |
|
REG | Reference to a national code |
Ref country code: DE Ref legal event code: R119 Ref document number: 69842881 Country of ref document: DE |
|
GBPC | Gb: european patent ceased through non-payment of renewal fee |
Effective date: 20160831 |
|
REG | Reference to a national code |
Ref country code: FR Ref legal event code: ST Effective date: 20170428 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: FR Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20160831 Ref country code: GB Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20160831 Ref country code: DE Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20170301 |