EP3316397A1 - Starre mehrstrahlige stereoskopische wendelgruppenantenne und flexible trägervorrichtung für wendelantenne dafür - Google Patents

Starre mehrstrahlige stereoskopische wendelgruppenantenne und flexible trägervorrichtung für wendelantenne dafür Download PDF

Info

Publication number
EP3316397A1
EP3316397A1 EP17769236.5A EP17769236A EP3316397A1 EP 3316397 A1 EP3316397 A1 EP 3316397A1 EP 17769236 A EP17769236 A EP 17769236A EP 3316397 A1 EP3316397 A1 EP 3316397A1
Authority
EP
European Patent Office
Prior art keywords
helical antenna
flexible support
side surfaces
antenna
top surface
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
Application number
EP17769236.5A
Other languages
English (en)
French (fr)
Other versions
EP3316397B1 (de
EP3316397A4 (de
Inventor
Jianjun Zhang
Yuan Zhuang
Hongxing Li
Xiaodan WU
Weiliang LIU
Wenchao WEI
Hao Hu
Yi Huang
Xiaochuan SHUANG
Kaichuang ZHANG
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Shanghai Spaceflight Institute of TT&C and Telecommunication
Original Assignee
Shanghai Spaceflight Institute of TT&C and Telecommunication
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Shanghai Spaceflight Institute of TT&C and Telecommunication filed Critical Shanghai Spaceflight Institute of TT&C and Telecommunication
Publication of EP3316397A1 publication Critical patent/EP3316397A1/de
Publication of EP3316397A4 publication Critical patent/EP3316397A4/de
Application granted granted Critical
Publication of EP3316397B1 publication Critical patent/EP3316397B1/de
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q1/00—Details of, or arrangements associated with, antennas
    • H01Q1/12—Supports; Mounting means
    • H01Q1/14—Supports; Mounting means for wire or other non-rigid radiating elements
    • 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
    • H01Q1/362—Structural form of radiating elements, e.g. cone, spiral, umbrella; Particular materials used therewith for broadside radiating helical antennas
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q11/00—Electrically-long antennas having dimensions more than twice the shortest operating wavelength and consisting of conductive active radiating elements
    • H01Q11/02—Non-resonant antennas, e.g. travelling-wave antenna
    • H01Q11/08—Helical antennas
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q21/00—Antenna arrays or systems
    • H01Q21/06—Arrays of individually energised antenna units similarly polarised and spaced apart
    • H01Q21/20—Arrays of individually energised antenna units similarly polarised and spaced apart the units being spaced along or adjacent to a curvilinear path
    • H01Q21/205—Arrays of individually energised antenna units similarly polarised and spaced apart the units being spaced along or adjacent to a curvilinear path providing an omnidirectional coverage

Definitions

  • the present invention relates to a helical antenna array, and more particularly to a fixed multi-beam helical antenna stereoscopic array with a folding and unfolding function and a helical antenna flexible support device thereof.
  • the helical antenna is an antenna widely used in the field of astronavigation. Compared with the microstrip antenna commonly used in the array antenna, the multi-turn axial mode single-wire helical antenna is significantly dominate in the directional diagram band width, circular polarization degree, directional pattern symmetry. Therefore, the number of array elements of the small-size antenna array can be greatly reduced when the array antenna gain is retained unchanged, with the single-wire helical antenna being an array element. In order to improve the gain, single-wire helical antenna usually has more turns, therefore having a greater height, a compression-release device can be used to greatly reduce the height of the antenna in the non-working state, and it is especially suitable for large-size applications at low-frequency.
  • the gain is reduced rapidly when scanning to a large angle in terms of a planar antenna array design.
  • a greater number of wave positions are required to cover the required view angle range, resulting in a geometric growth in the number of the feeding networks.
  • the antenna array is designed as a stereoscopic structure, the physical direction of the array is changed, so that the antenna array operates in the absence of a scanning angle or a small scanning angle, then an excessive increase in the number of array elements can be avoided, and the scale of the feeding network can be reduced.
  • a single-wire helical antenna achieves a gain of no less than 10 dB in at least 10% of the bandwidth.
  • a stereoscopic structure antenna array scheme with a single-wire helical antenna as the array element.
  • the structure design of the stereoscopic array is carried out according to the specific gain coverage requirement, so that each pair of the antennas points to different azimuths, and the final beam coverage requirement is realized by arranging a series of different pointing antennas on the structure.
  • the present invention provides a fixed multi-beam helical antenna stereoscopic array, comprising helical antenna units and a frustum structure, wherein the frustum structure comprises a top surface and a plurality of side surfaces, the upper ends of the side surfaces are connected to the edge of the top surface, the side edges of the side surfaces are connected to the side edges of the adjacent side surfaces, the helical antenna units are respectively provided on the top surface and the side surfaces, the helical antenna units comprise helical antennas and flexible support wires, the bottom of the helical antenna of each helical antenna unit is respectively mounted on the top surface and the side surfaces, a plurality of the flexible support wires arranged in parallel are uniformly distributed around the helical antenna, and the flexible support wires are axially arranged along the helical antenna to support the helical antenna.
  • the top surface is in the shape of a regular polygon
  • the side surfaces are in the shape of isosceles trapezoids
  • the upper ends of the side surfaces are connected to the edge of the top surface
  • the side edges of the side surfaces are connected to the side edges of the adjacent side surfaces.
  • the circumscribed circle of the top surface has a diameter of about 0.7 to 0.8 times the antenna operating wavelength of the helical antenna unit.
  • a bottom surface in a shape of a regular polygon that is the same as the top surface, but an area of the bottom surface is larger than that of the top surface, and each edge of the bottom surface is respectively connected to the bottom edge of the side surface.
  • the adjacent two side surfaces are connected by side brackets
  • the side surfaces and the top surface are connected by upper brackets
  • lower brackets are provided on the lower parts of the side surfaces
  • a support frame of the frustum structure is composed of the upper brackets, the side brackets and the lower brackets.
  • the helical antenna units further comprise a dielectric plate on which the bottom of the helical antenna is mounted, the dielectric plate is provided on the top surface and the side surface, and the dielectric plate is made from an insulating material.
  • the helical antenna units further comprise a pitch fine-adjustment device by which the flexible support wires are connected to each layer of the helical antennas.
  • beam isolation plates are respectively provided on a ridge where the top surface is connected with the side surfaces, and on a ridge where every two adjacent side surfaces are connected, and the beam isolation plates are metal plates or metal meshes.
  • the beam isolation plate has a height of 0.3 to 0.4 times the antenna operating wavelength of the helical antenna unit.
  • the beam isolation plates are slantingly mounted on the ridges and equally divide the space between two faces of the frustum structure where the ridges are located.
  • the beam isolation plates are provided with weight reducing apertures when they are provided as metal plates, wherein the weight reducing holes have a diameter of not more than 0.1 times the antenna operating wavelength of the helical antenna units; the beam isolation plates are provided with a plurality of metal mesh holes when they are metal meshes, wherein the metal mesh holes have a diameter of not more than 0.1 times the antenna operating wavelength of the helical antenna units.
  • the present invention provides a helical antenna flexible support device which comprises a helical antenna, a dielectric plate, a dielectric base, a parallel flexible support wire and a pitch fine-adjustment device; the bottom of the helical antenna is mounted on the dielectric plate via a plurality of dielectric bases, and the plurality of the dielectric bases are circumferentially and uniformly distributed; a plurality of flexible support wires are axially and uniformly distributed around the helical antenna, and the flexible support wires are axially arranged along the helical antenna; the flexible support wires are connected to each layer of the helical antenna by a pitch fine-adjustment device.
  • the bottom of the helical antenna is fixed to the dielectric plate by three dielectric bases of non-equal heights.
  • the helical antenna is uniformly distributed with three flexible support wires.
  • the dielectric plate and the dielectric base are made from an insulating material.
  • the flexible support wire is comprised of insulated wires of high strength.
  • the pitch fine-adjustment device comprises an adjustment block fixed to the helical antenna, the flexible support wire is provided through the adjustment block, and the adjustment block axially and slightly moves along the flexible support wire to achieve fine-adjustment of pitch.
  • the helical antenna is mounted on the dielectric plate and the plurality of flexible support wires, and the helical antenna is in a non-fully released state.
  • an end of the bottom of the helical antenna is connected with an adapter, and the dielectric plate is fixed to an adapter plate.
  • the present invention further provides a helical antenna flexible support device, comprising a helical antenna and parallel flexible support wires, the plurality of flexible support wires arranged in parallel are uniformly distributed around the helical antenna, and the flexible support wires are axially arranged along the helical antenna to support the helical antenna.
  • a dielectric plate on which the bottom of the helical antenna is mounted, and the dielectric plate is made from an insulating material.
  • the bottom of the helical antenna is mounted on the dielectric plate via a number of dielectric bases, and the dielectric bases are circumferentially distributed and made from an insulating material.
  • a pitch fine-adjustment device Preferably, there is further provided a pitch fine-adjustment device, and the flexible support wires are connected to each layer of the helical antenna by a pitch fine-adjustment device.
  • the present embodiment provides a multi-beam helical antenna stereoscopic array, comprising a frustum structure 10 and a plurality of helical antenna units 20.
  • the frustum structure 10 comprises a top surface 11 and a plurality of side surfaces 12, the upper ends of side surface 12 are connected to the edges of the top surface 11, and the side edges of the side surfaces 12 are connected to the side edges of the adjacent side surfaces 12.
  • the helical antenna units 20 are respectively provided on the top surface 11 and the side surfaces 12, and the helical antenna units 20 are respectively fixedly mounted on the top surface and the side surfaces.
  • the frustum structure 10 formed by the top surface 11 and the side surfaces 12 is a primary structure for supporting the respective helical antenna units 20, and since the respective angles between the respective faces of the frustum structure 20 themselves are different from each other, the antenna beams of the helical antenna units on the top surface and the side surfaces are pointing at different directions.
  • the multi-beam helical antenna stereoscopic array realizes antenna beam of the helical antenna units pointing deflection by using the stereoscopic frustum structure, so as to realize a beam coverage in the airspace in a wider angle of view, without using the phase-shifting feeding network and costs can be greatly saved as compared with the conventional phased-array antennas.
  • the above top surface 11 is provided as a regular polygon.
  • the top surface 11 in this embodiment is a regular hexagon.
  • the side surfaces 12 are provided as isosceles trapezoids, an upper end of the side surfaces 12 is connected to the edge of one side of the top surface 11, and the side edges of the side surfaces 12 are connected to the side edges of the adjacent side surfaces.
  • the top surface 11 of the regular hexagon is matched with the side surfaces 12 of six isosceles trapezoids to form a frustum structure having, and the frustum structure is overall stable with six side ridges and six upper ridges and can stably support each helical antenna unit.
  • the top surface is not limited to regular hexagon, and may be provided with other polygons such as a regular quadrilateral, pentagon, heptagon, octagon and the like as needed.
  • the top surface of such regular polygons can match the side surfaces of the isosceles trapezoids to form a uniform frustum structure with the same side edges, so that the antenna beams of the helical antenna units on the respective side surfaces have a same uniform pointing deflection with respect to the helical antenna units of the top surface. And the pointing deflection between the antenna beams of the helical antenna units on the respective side surfaces is the same, and uniform beam coverage of the airspace in the wider view field can be achieved.
  • the diameter of the circumscribed circle of the top surface of the regular polygon is set to any value between 0.7 times, 0.8 times, or 0.7 to 0.8 times the antenna operating wavelength of the helical antenna unit. It is preferably 0.75 times the antenna operating wavelength of the helical antenna unit.
  • the top surface of this size allows the pointing deflection between the antenna beams of the helical antenna units on the respective side surfaces with respect to the helical antenna units on the top surface to fit the beam coverage of the respective helical antenna units so that the beams of the respective antenna units are uniformly expanded to cover a larger view angle within airspace.
  • the above-mentioned frustum structure 10 further comprises a bottom surface with the same regular polygon as the top surface, but the area of the bottom surface is larger than the top surface, and the respective edge of the bottom surface are respectively connected to the bottom edge of the respective side surfaces.
  • the bottom surface matches the side surfaces and the top surface to form an internal space of the frustum structure so that the internal space of the frustum structure can be installed with various measurement and control stand-alone devices with low noise and so on.
  • the frustum structure with a bottom surface can be sealed as needed to control the internal working environment of the frustum structure, wherein, each face of the frustum structure is made from a low-density metal material to meet the rigidity and strength requirements of the frustum structure.
  • the adjacent two side surfaces are connected by a side bracket 14, the side surfaces 12 are connected to the top surface 11 by the upper bracket 13, and the lower bracket 15 is provided on the lower parts of the side surface, and the upper bracket 13, the side bracket 14 and the lower bracket 15 form the support bracket of the frustum structure 10.
  • the frustum structure is a primary support structure of the antenna stereoscopic array, and the rigidity and strength requirements can be further satisfied by providing the support bracket.
  • the upper bracket 13 is a regular polygonal structure that matches the top surface 11.
  • the lower bracket 15 is also a regular polygonal structure.
  • the upper bracket 13, the side bracket 14 and the lower bracket 15 are fixedly connected by fasteners.
  • the upper bracket 13, the side bracket 14 and the lower bracket 15 serve to connect and fix the top surface and the side surfaces, and serve to connect and fix the side surfaces to the side surfaces.
  • the lower bracket 15 is a regular polygonal structure which matches the bottom surface, and the lower bracket 15 also functions to connect and fix the side surfaces and the bottom surface. The setting of the brackets between the faces provides better fixed molding of the frustum structure and a good support and fixation of the helical antenna units on the respective faces.
  • changing sizes of the upper bracket 13, the side bracket 14 and the lower bracket 15, and changing the corresponding sizes of the top and side surfaces connected can realize the purpose of changing the respective positions and angles of the respective faces of the stereoscopic array formed by the frustum structure may, thereby to adjust the angles of the beams of the helical antenna units on the respective faces, so that the antenna array is more suitable for a variety of performance requirements.
  • the helical antenna units of the multi-beam helical antenna stereoscopic array provided in the present invention further include a dielectric plate 22, in addition to the helical antenna 21 and a plurality of parallel flexible support wires 23.
  • the bottom of the helical antenna 21 is mounted on the dielectric plate 22, wherein the dielectric plate 22 is made from an insulating material, and the helical antenna can be directly mounted on the frustum structure made from the above-mentioned metal material by the dielectric plate 22.
  • Each of the helical antenna units of the entire antenna array is mounted on the top and side surfaces of the frustum structure of the multi-beam helical antenna stereoscopic array by the insulating dielectric plate, respectively.
  • the helical antenna unit of the present embodiment supports and fixes the helical antenna by fitting of the flexible support wires and the dielectric plate.
  • the helical antenna unit has a simple structure, a light weight, and is easy to operate and has a high promotion value as compared with the helical antenna support device of the prior art.
  • a pitch fine-adjustment device 24 is also provided, a plurality of flexible support wires 23 are uniformly arranged around the helical antenna 21, and each of the flexible support wires 23 is axially arranged along the helical antenna 21, and the support wires 23 are connected to layers of the helical antenna 21 by a pitch fine-adjustment device 24.
  • the flexible support wires herein are also made from an insulating material.
  • the flexible support wires only provide tension, so that each helical antenna of the helical antenna unit can be easily compressed below or lower than the beam isolation plate, thereby reducing the antenna collapsing envelope.
  • the helical antenna unit When the helical antenna unit is in the absence of external constraints, the helical antenna achieves incomplete unfolding in the interaction of its own restoring force and tension of the flexible support wires.
  • the helical antenna pitch fine-adjustment is achieved further by the pitch fine-adjustment device between the flexible support wires and helical antenna, in order to effectively control the rigidity and pitch of the helical antenna.
  • the helical antenna unit has a folding and unfolding function, simple structure and light weight, and it can adjust the pitch and rigidity of the helical antenna.
  • the support structure of the antenna greatly reduces the weight of the helical antenna device, and can achieve the helical compression release, thus greatly reducing the installation space of the helical antenna.
  • the bottom of the helical antenna 21 is mounted on the dielectric plate 22 by a plurality of dielectric bases 25 and the plurality of dielectric bases 25 are uniformly distributed in the circumferential direction, and the dielectric bases 25 herein are also made from an insulating material.
  • the dielectric bases can be provided to ensure the stability of the helical antenna fixed on the dielectric plate, and since each part of a turn of the bottom of the helical antenna is not on the same horizontal plane, the plurality of the dielectric bases in the invention are of non-equal heights, and the height of the dielectric base is determined by the height of the helical antenna provided thereon away from the dielectric plate. While the dielectric bases and the dielectric plate made from the insulating material do not affect the normal operation of the helical antenna.
  • the edge of the top surface i.e., on the ridge where the top surface is connected to the side surface
  • the side edge where every two adjacent side surfaces 12 are connected i.e., on the ridge where the edges of every two adjacent side surfaces are connected
  • the beam isolation plates 30 in this embodiment are metal plates or metal meshes.
  • the upper beam isolation plate 31 is fixedly connected to the ridge where the top surface and the side surfaces are connected
  • the side beam isolation plates 32 is fixedly connected to the ridge where every two adjacent side surfaces are connected.
  • Each of the beam isolation plates 30 is fixed to the frustum structure by fasteners, and the upper beam isolation plate and the side beam isolation plate are also tightly fixed by fasteners so that each of the beam isolation plates is tightly connected to each other as a whole.
  • the frustum structure is formed with the support frame being composed of an upper bracket, a side bracket and a lower bracket
  • the ridge of the frustum structure is composed of an upper bracket and side brackets
  • the beam isolation plates 30 are fixed to the upper bracket and side brackets.
  • the beam isolation plate also changes with the inclination angle of the ridge of the frustum structure to accommodate the beam isolation of the helical antennas of different angles.
  • the multi-beam helical antenna stereoscopic array can effectively reduce the mutual coupling between the antenna units by using the beam isolation plate, and can greatly reduce the size of the stereoscopic frustum structure as compared with the way of simply isolating the space.
  • the height of the beam isolation plate 30 is set to 0.3 to 0.4 times the operating wavelength of the antenna of the helical antenna unit, and the height thereof is preferably set to 0.375 times the operating wavelength of the antenna.
  • the above-described beam isolation plate 30 is slantingly mounted on each of the above-mentioned ridges, and the mounting angle thereof equally divide the space between two faces of the frustum structure 10 where the ridges are located. It is important to note that the ridges herein do not include the part of the frustum structure connected to the bottom surface or the lower bracket, that is, the edges of the bottom of the frustum structure do not need to be provided with isolation devices.
  • the beam isolation plates 30 are provided with weight reducing holes when they are provided as metal plates, wherein the weight reducing holes have a diameter of not more than 0.1 times the antenna operating wavelength of the helical antenna units 20; the beam isolation plates 30 have a plurality of metal mesh holes when they are metal meshes, wherein the metal mesh holes have a diameter of not more than 0.1 times the antenna operating wavelength of the helical antenna units 20.
  • the weight can be reduced under the premise of not affecting the electrical performance if the beam isolation plate is provided with weight reducing apertures or the beam isolation plate is provided as a metal mesh having metal mesh holes.
  • FIG. 4 is a beam coverage simulation diagram of a fixed multi-beam helical antenna stereoscopic array of the present invention in a 7-beam application in which the contour is an 8 dB gain and the operating frequency is f 1 ;
  • FIG. 5 is a beam coverage simulation diagram of a fixed multi-beam helical antenna stereoscopic array of the present invention in a 7-beam application in which the contour is an 8 dB gain and the operating frequency is f 2 , f 1 ⁇ 1.1*f 2 .
  • the antenna stereoscopic array provided by the invention has a large beam coverage and the overlapping area between the beams is smaller and the antenna works better.
  • the single-wire helical antenna used in the present invention can achieve an 8 dB gain coverage within ⁇ 25° within the beam within 12% of the bandwidth, and is superior to the conventional microstrip antenna array scheme from electrical performance, cost and weight.
  • the present invention provides a fixed multi-beam helical antenna stereoscopic array having a folding and unfolding function which can be used to simultaneously receive multichannel signals from a large angle of view. Compared with the conventional scheme of realizing multi-beam antenna through phased array technology, it not only has the advantages of low cost, light weight, but also has the folding and unfolding function. In addition, the antenna stereoscopic array realizes a beam coverage of a wider angle of view in the airspace, and has extremely high application promotion value.
  • the present invention also provides a helical antenna flexible support device which can be used as a helical antenna unit of the fixed multi-beam helical antenna as described above, or as a helical antenna flexible support device alone.
  • the device consists of a dielectric plate 22, a plurality of dielectric bases 25, a plurality of flexible support wire 23, and the like.
  • the helical antenna support device of the present invention has simple structure and light weight, and it can adjust the pitch and rigidity of the helical antenna.
  • the bottom of the helical antenna 21 is fixed to the dielectric plates 22 by a plurality of dielectric bases 25, and the plurality of dielectric bases 25 are uniformly distributed in the circumferential direction to ensure the stability of the fixation to the helical antenna 21, since each part of a turn of the bottom of the helical antenna is not on the same horizontal plane, the plurality of the dielectric bases 25 in the invention are of non-equal heights, and the height of the dielectric bases 25 are determined by the height of the helical antenna 21 thereon away from the dielectric plate 22.
  • the dielectric plate 22 and the dielectric bases 25 are all made from an insulating material so as to prevent the dielectric plate 22 and the dielectric bases 25 from affecting the normal operation of the helical antenna 21.
  • the bottom of the helical antenna 21 is mounted to the dielectric plate 22 by three dielectric bases 25; of course, the number of the dielectric bases 25 provided may be four, five, etc., and may be set depending on the specific circumstance but is not limited herein.
  • the plurality of flexible support wires 23 are circumferentially arranged around the helical antenna 21, each flexible support wire 23 is axially arranged, and the flexible support wires 23 can be provided in a number according to the specific circumstance, as shown in FIG. 6 , three flexible support wires 23 are provided, and five or six of and the like may be provided, and there is no limitation here.
  • the flexible support wires 23 serve to axially support the helical antenna 21.
  • the flexible support wires 23 are comprised of insulated wires of high strength.
  • each of the flexible support wires 23 is connected to each layer of the helical antennas 21 by the pitch fine-adjustment device 24, so that each layer of the helical antennas 21 are axially and slightly moved by the pitch fine-adjustment device 24 with respect to the flexible support wires 23 to adjust the space (i.e., the pitch of the helical antenna 21) between the each layer of the helical antennas 21, thus precisely controlling the pitch of the helical antenna 21.
  • the pitch of the helical antenna 21 in the natural state is larger than the required pitch (i.e., the pitch of the helical antenna 21 after it is mounted to the support device); the pitch of the helical antenna 21 is constrained to the required pitch by the flexible support wires 23 so as to ensure that the helical antenna 21 is always in a non-fully released state, at which time the helical antenna 21 itself has a certain restoring force; the rigidity of the helical antenna 21 is controlled under the interactions of the restoring force of the helical antenna 21 and the restraining force of the flexible support wires 23 thereto.
  • the design or strength selection of the dielectric bases 25 and the flexible support wires 23 need to be capable of withstanding the shock released by the compression moment of the helical antenna 21.
  • the pitch fine-adjustment device 24 includes an adjustment block 241 fixed on the helical antenna 21, the flexible support wires 23 are fitted through the adjustment block 241, and the adjustment block 241 axially and slightly moves along the flexible support wires 23 to achieve fine-adjustment of pitch; When the pitch is adjusted, the adjustment block 241 and the flexible support wire 23 are fixed by dispensing with an insulating glue.
  • the specific structure of the pitch fine-adjustment device 24 is not limited to the above, but may be adjusted depending on the specific circumstance.
  • a radio frequency connector joint 26 (hereinafter referred to as SMA) is connected to the end of the bottom of the helical antenna 21, and one end of the SMA joint is connected to the transceiver to realize transceiving control over the helical antenna signals. And the other end is fixed to the end of the helical antenna 21 by welding or by means of an adapter.
  • the dielectric plate 22 is further fixed to an adapter plate 27 to mechanically fix of the helical antenna platform.
  • the shape of the adapter plate 27 is determined by the external mounting platform of the helical antenna device, and is not limited thereto.
  • the top surface and side surfaces of different shapes of the frustum structure can be used as the above-described adapter plate 27.
  • the present invention also provides a helical antenna flexible support device which can be used as a helical antenna unit of the fixed multi-beam helical antenna as described above, or as a helical antenna flexible support device alone.
  • the device includes a helical antenna and parallel flexible support wires, the plurality of flexible support wires arranged in parallel are uniformly distributed around the helical antenna, and the flexible support wires are axially arranged along the helical antenna to support the helical antenna.
  • the device (which can also be regarded as a helical antenna unit) supports and fixes the helical antenna by providing a plurality of flexible support wires arranged in parallel, so that the helical antenna has the folding and unfolding function, which is very suitable for adjusting the space occupied by the helical antenna to satisfy it for different occasions.
  • the device as an extension of the helical antenna flexible support device as shown in FIG. 6 , may be used alone or the device may be worked as a helical antenna unit of the fixed multi-beam helical antenna stereoscopic array as shown in FIG. 2 .
  • each part structure of the device as shown in FIG. 6 may also be used in any combination where the function and the operational effect do not conflict.
  • the helical antenna flexible support device further comprises a dielectric plate on which the bottom of the helical antenna is mounted and the dielectric plate is made from an insulating material.
  • the dielectric plate may be provided as a separate dielectric plate structure to be mounted on an insulating surface of a frustum structure of a fixed multi-beam helical antenna stereoscopic array or other structure on which a helical antenna needs to be mounted, or on the insulating surface of the frustum structure of the fixed multi-beam helical antenna stereoscopic array.
  • the helical antenna flexible support device further comprises a dielectric base, the bottom of the helical antenna is mounted on the dielectric plate via a number of dielectric bases, and the dielectric bases are circumferentially distributed and made from an insulating material. Since each part of a turn of the bottom of the helical antenna 21 is not on the same horizontal plane, the plurality of the dielectric bases 5 in the invention are of non-equal heights, and the height of the dielectric base is determined by the height of the helical antenna there on away from the dielectric plate 3.
  • a pitch fine-adjustment device the flexible support wires are connected to each layer of the helical antenna by a pitch fine-adjustment device.
  • the flexible support wires and the helical antenna are connected by the pitch fine-adjustment device, the present invention utilizes the restoring force of the helical antenna itself and the unidirectional support characteristic of the flexible wire to realize the control over the pitch and rigidity of the helical antenna so as to realize the flexible support of the helical antenna.
  • the design structure greatly reduces the weight of the helical antenna device, and can achieve helical compression release, which greatly reduces installation space of the helical antenna;
  • the helical antenna flexible support device of the present embodiment supports and fixes the helical antenna by fitting of the flexible support wires and the dielectric plate.
  • the helical antenna support device has a simple structure, a light weight, and is easy to operate and has a high promotion value as compared with the helical antenna support device of the prior art.
  • the flexible support wires and the helical antenna are connected by the pitch fine-adjustment device, the present invention utilizes the restoring force characteristic of the helical antenna itself and the unidirectional support characteristic of the flexible wire to realize the control over the pitch and rigidity of the helical antenna.
  • the design structure greatly reduces the weight of the helical antenna device, and can achieve helical compression release, which greatly reduces installation space of the helical antenna.

Landscapes

  • Details Of Aerials (AREA)
EP17769236.5A 2016-03-23 2017-01-18 Starre mehrstrahlige stereoskopische wendelgruppenantenne und flexible trägervorrichtung für wendelantenne dafür Active EP3316397B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201610167974.8A CN105762483B (zh) 2016-03-23 2016-03-23 一种螺旋天线柔性支撑装置
PCT/CN2017/071578 WO2017161959A1 (zh) 2016-03-23 2017-01-18 固定多波束螺旋天线立体阵及其螺旋天线柔性支撑装置

Publications (3)

Publication Number Publication Date
EP3316397A1 true EP3316397A1 (de) 2018-05-02
EP3316397A4 EP3316397A4 (de) 2018-08-29
EP3316397B1 EP3316397B1 (de) 2019-09-04

Family

ID=56346301

Family Applications (1)

Application Number Title Priority Date Filing Date
EP17769236.5A Active EP3316397B1 (de) 2016-03-23 2017-01-18 Starre mehrstrahlige stereoskopische wendelgruppenantenne und flexible trägervorrichtung für wendelantenne dafür

Country Status (3)

Country Link
EP (1) EP3316397B1 (de)
CN (1) CN105762483B (de)
WO (1) WO2017161959A1 (de)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105762483B (zh) * 2016-03-23 2019-02-19 上海航天测控通信研究所 一种螺旋天线柔性支撑装置
CN106785437A (zh) * 2017-01-18 2017-05-31 上海航天测控通信研究所 固定多波束螺旋天线立体阵
CN107968242B (zh) * 2017-12-21 2024-02-02 星际漫步（北京）航天科技有限公司 用于立方星的相机和天线一体化系统及天线展开方法
CN111129721A (zh) * 2020-01-13 2020-05-08 上海航天测控通信研究所 一种可展开螺旋天线
CN111952727B (zh) * 2020-09-22 2023-05-16 上海无线电设备研究所 一种相控阵天线
CN113224498B (zh) * 2021-05-19 2022-04-15 上海航天空间技术有限公司 一种新型高收纳率vhf天线
CN114335971B (zh) * 2021-11-30 2023-11-03 中国电子科技集团公司第三十九研究所 一种星载卫星可展开螺旋天线及其制备方法

Family Cites Families (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3836979A (en) * 1973-12-14 1974-09-17 Trw Inc Lightweight deployable helical antenna
US4068238A (en) * 1976-05-13 1978-01-10 Trw Inc. Elastic strain energy deployable helical antenna
US4780727A (en) * 1987-06-18 1988-10-25 Andrew Corporation Collapsible bifilar helical antenna
AUPM277293A0 (en) * 1993-12-06 1994-01-06 Radio Frequency Systems Pty Limited Antenna assembly
US5489916A (en) * 1994-08-26 1996-02-06 Westinghouse Electric Corp. Helical antenna having adjustable beam angle
JP3649516B2 (ja) * 1996-05-16 2005-05-18 日本飛行機株式会社 伸展形ヘリカルアンテナ装置
US6819302B2 (en) * 2003-01-15 2004-11-16 Lockheed Martin Corporation Dual port helical-dipole antenna and array
KR100441922B1 (ko) * 2003-01-16 2004-07-27 이종문 듀얼밴드 안테나 및 듀얼밴드 안테나의 공진 주파수 조정방법
CN202748817U (zh) * 2011-11-30 2013-02-20 北京物资学院 一种螺旋式定向接收的无线射频标签
CN102856647A (zh) * 2012-09-13 2013-01-02 中国航天科技集团公司第五研究院第五一三研究所 一种s频段螺旋天线方向图仰角指向的调整方法
WO2015042968A1 (zh) * 2013-09-30 2015-04-02 华为技术有限公司 扇区配置方法及装置、系统
CN104638348B (zh) * 2015-02-03 2017-06-09 四川九洲空管科技有限责任公司 螺旋线天线结构及基于该结构的高增益天线及其安装方法
CN104836011B (zh) * 2015-05-28 2018-01-02 四川九洲空管科技有限责任公司 星载螺旋天线
CN205050984U (zh) * 2015-07-28 2016-02-24 陕西永诺信息科技有限公司 一种螺旋阵列天线
CN105762483B (zh) * 2016-03-23 2019-02-19 上海航天测控通信研究所 一种螺旋天线柔性支撑装置

Also Published As

Publication number Publication date
WO2017161959A1 (zh) 2017-09-28
EP3316397B1 (de) 2019-09-04
EP3316397A4 (de) 2018-08-29
CN105762483B (zh) 2019-02-19
CN105762483A (zh) 2016-07-13

Similar Documents

Publication Publication Date Title
EP3316397A1 (de) Starre mehrstrahlige stereoskopische wendelgruppenantenne und flexible trägervorrichtung für wendelantenne dafür
US11303016B2 (en) Multi-sector antennas
US11695223B2 (en) Antenna array
US7710346B2 (en) Heptagonal antenna array system
US6133882A (en) Multiple parasitic coupling to an outer antenna patch element from inner patch elements
US9246236B2 (en) Dual-polarization radiating element of a multiband antenna
US20160248166A1 (en) Multi-band, multi-polarized wireless communication antenna
US10186778B2 (en) Wideband dual-polarized patch antenna array and methods useful in conjunction therewith
US11038286B2 (en) Antenna array
US10439283B2 (en) High coverage antenna array and method using grating lobe layers
US20190067810A1 (en) Ground to air antenna array
JP2017092663A (ja) 広帯域無指向性アンテナ
US11688951B2 (en) Wideband dual-polarized antenna
JP6421057B2 (ja) 広帯域無指向性アンテナ
WO2015159871A1 (ja) アンテナ及びセクタアンテナ
JP3822607B2 (ja) アレーアンテナ
CA2922043C (en) Ground to air antenna array
WO2022264415A1 (ja) アンテナ装置及び無線通信装置
CA2316288A1 (en) Multiple parasitic coupling from inner patch antenna elements to outer patch antenna elements

Legal Events

Date Code Title Description
STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE INTERNATIONAL PUBLICATION HAS BEEN MADE

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

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: REQUEST FOR EXAMINATION WAS MADE

17P Request for examination filed

Effective date: 20171208

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

AX Request for extension of the european patent

Extension state: BA ME

RIN1 Information on inventor provided before grant (corrected)

Inventor name: WU, XIAODAN

Inventor name: SHUANG, XIAOCHUAN

Inventor name: WEI, WENCHAO

Inventor name: LIU, WEILIANG

Inventor name: ZHANG, JIANJUN

Inventor name: HUANG, YI

Inventor name: ZHUANG, YUAN

Inventor name: HU, HAO

RIN1 Information on inventor provided before grant (corrected)

Inventor name: ZHANG, JIANJUN

Inventor name: LIU, WEILIANG

Inventor name: HU, HAO

Inventor name: WU, XIAODAN

Inventor name: HUANG, YI

Inventor name: SHUANG, XIAOCHUAN

Inventor name: WEI, WENCHAO

Inventor name: ZHUANG, YUAN

A4 Supplementary search report drawn up and despatched

Effective date: 20180730

RIC1 Information provided on ipc code assigned before grant

Ipc: H01Q 1/36 20060101ALI20180723BHEP

Ipc: H01Q 21/00 20060101ALI20180723BHEP

Ipc: H01Q 11/08 20060101ALI20180723BHEP

Ipc: H01Q 21/20 20060101ALI20180723BHEP

Ipc: H01Q 1/14 20060101AFI20180723BHEP

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: EXAMINATION IS IN PROGRESS

17Q First examination report despatched

Effective date: 20190125

GRAP Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOSNIGR1

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: GRANT OF PATENT IS INTENDED

DAV Request for validation of the european patent (deleted)
DAX Request for extension of the european patent (deleted)
INTG Intention to grant announced

Effective date: 20190527

GRAS Grant fee paid

Free format text: ORIGINAL CODE: EPIDOSNIGR3

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE PATENT HAS BEEN GRANTED

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

REG Reference to a national code

Ref country code: GB

Ref legal event code: FG4D

REG Reference to a national code

Ref country code: CH

Ref legal event code: EP

REG Reference to a national code

Ref country code: AT

Ref legal event code: REF

Ref document number: 1176671

Country of ref document: AT

Kind code of ref document: T

Effective date: 20190915

REG Reference to a national code

Ref country code: DE

Ref legal event code: R096

Ref document number: 602017006801

Country of ref document: DE

REG Reference to a national code

Ref country code: IE

Ref legal event code: FG4D

REG Reference to a national code

Ref country code: NL

Ref legal event code: FP

REG Reference to a national code

Ref country code: LT

Ref legal event code: MG4D

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: HR

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: 20190904

Ref country code: SE

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: 20190904

Ref country code: FI

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: 20190904

Ref country code: LT

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: 20190904

Ref country code: NO

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: 20191204

Ref country code: BG

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: 20191204

RAP2 Party data changed (patent owner data changed or rights of a patent transferred)

Owner name: SHANGHAI SPACEFLIGHT INSTITUTE OF TT&C AND TELECOMMUNICATION

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: 20190904

Ref country code: GR

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: 20191205

Ref country code: RS

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: 20190904

Ref country code: LV

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: 20190904

Ref country code: AL

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: 20190904

REG Reference to a national code

Ref country code: AT

Ref legal event code: MK05

Ref document number: 1176671

Country of ref document: AT

Kind code of ref document: T

Effective date: 20190904

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: RO

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: 20190904

Ref country code: PL

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: 20190904

Ref country code: EE

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: 20190904

Ref country code: AT

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: 20190904

Ref country code: PT

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: 20200106

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: 20190904

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IS

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: 20200224

Ref country code: SK

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: 20190904

Ref country code: SM

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: 20190904

Ref country code: CZ

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: 20190904

REG Reference to a national code

Ref country code: DE

Ref legal event code: R097

Ref document number: 602017006801

Country of ref document: DE

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

PG2D Information on lapse in contracting state deleted

Ref country code: IS

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IS

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: 20200105

Ref country code: DK

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: 20190904

REG Reference to a national code

Ref country code: DE

Ref legal event code: R119

Ref document number: 602017006801

Country of ref document: DE

26N No opposition filed

Effective date: 20200605

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: MC

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: 20190904

Ref country code: SI

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: 20190904

REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

REG Reference to a national code

Ref country code: BE

Ref legal event code: MM

Effective date: 20200131

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20200801

Ref country code: LU

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20200118

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LI

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20200131

Ref country code: BE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20200131

Ref country code: CH

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20200131

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20200118

GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 20210118

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GB

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20210118

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: TR

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: 20190904

Ref country code: MT

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: 20190904

Ref country code: CY

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: 20190904

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: NL

Payment date: 20220119

Year of fee payment: 6

Ref country code: FR

Payment date: 20220125

Year of fee payment: 6

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: MK

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: 20190904

REG Reference to a national code

Ref country code: NL

Ref legal event code: MM

Effective date: 20230201

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: NL

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20230201

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: 20230131