70results about "Inflatable antennas" patented technology

The invention provides a liquid metal-based air-control deformable antenna. The liquid metal-based air-control deformable antenna comprises a flexible runner, liquid metal, an airbag and an air pump, wherein the liquid metal and the airbag are both arranged in the flexible runner; and the air pump is arranged on the exterior of the flexible runner and used for air inflation or air suction for the airbag. By inflating the airbag to expand the airbag, movement of the liquid metal in the flexible runner is pushed to form a specific shape; by inflating different airbags, volumes and shapes are changed, so that changes of the liquid metal antenna position, changes of the antenna diameter, changes of the antenna lengths, and changes of antenna tilted angle can be realized; the diameter and length of the air-control are relatively large in a changeable range, so that a relatively wide frequency band can be provided; and in addition, liquid metal material has mobility, so that cracking of the antenna can be prevented, and self recovery capability is achieved.

An inflatable antenna may include a support structure comprised of a flexible material, the support structure having an inner wall and an outer wall, the inner wall and the outer wall defining an inflation region; a flexible antenna element contained within the support structure; a feed line and a phase line connected to the flexible antenna element; an inflatable bladder contained within the inflation region; and an inflation apparatus coupled to the support structure and in fluid communication with the inflatable bladder. In some embodiments, the inflatable bladder may be readily inserted and removed from the support structure through an opening within the support structure. The inflatable antenna may operate in the UHF satellite communications band. The feed line and phase line may be perpendicularly oriented with respect to the flexible antenna element. In some embodiments, the support structure may not include an inner wall.

The invention discloses a shape memory inflatable tube structure and a preparation method thereof, and relates to the technical field of the inflatable antenna. The shape memory inflatable tube structure comprises a shell structure and an aerodynamic structure; the aerodynamic structure is arranged in a shell structure; the shell structure comprises a tube body and at least one heating film; the heating film is adhered on an outer wall of the tube body; the material of the tube body is the shape memory composite material; the aerodynamic structure comprises a PET woven net tube and a latex tube; the latex tube is arranged in the PET woven net tube. The shape memory inflatable tube structure provided by the invention selects the shape memory composite material as the tube body, the tube body is heated through the heating film to control the unfolding of the inflatable tube structure, so that the curling and unfolding process of the inflatable tube can be conveniently controlled, the system structure is less in control loop and high in system reliability.

A concentric arrangement of multiple spacecraft antennas mounted symmetrically about the yaw axis of rotation or center of gravity of the spacecraft that provides the capability for spacecraft with multiple antennas to maneuver without introducing errors into navigation signals and without adding complexity to the spacecraft and/or remote terminals. An arrangement of multiple spacecraft antennas comprising a first antenna array mounted on a spacecraft bus, the first antenna array having a center located on a yaw axis of the spacecraft and a second antenna array mounted on the spacecraft bus, the second antenna array having a coincident or overlapping frequency band as the first antenna array and mounted symmetrically about the yaw axis of the spacecraft in a central portion of the first antenna array so as to be concentric with the first antenna array.

An antenna system is provided including a rapidly expandable-collapsible housing which mounts two sections of fabric material each having an array of antenna elements formed of electrically conductive material such as copper thread embedded in the fabric sections. The fabric sections are movable between the expanded and collapsed positions with the housing and are located in different planes.

The invention provides a reflecting surface folding and unfolding structure of a foldable and deployable antenna of space-based radar, belongs to the technical field of the space-based radar and solves the problems of existing foldable and deployable antennas. The reflecting surface folding and unfolding structure comprises a reflecting surface, transverse ribs, bistable composite foldable and deployable cylindrical shells and auxiliary unfolding inflatable arms, wherein the reflecting surface is rectangular, the multiple transverse ribs arranged in the width direction of the reflecting surface are mounted on the surface of one side of the reflecting surface, are bonded with the reflecting surface and adopt a hollow tubular structure, the surface, bonded with the reflecting surface, of each transverse rib is a plane, and the surface, opposite to the surface bonded with the reflecting surface, of each transverse rib is an indent arc surface; at least two bistable composite foldable and deployable cylindrical shells are arranged between every two adjacent transverse ribs, and two ends of each bistable composite foldable and deployable cylindrical shell are contacted with the adjacent transverse ribs respectively; the two transverse ribs located on the outmost side of all the transverse ribs are connected through the at least two auxiliary unfolding inflatable arms. The reflecting surface folding and unfolding structure is applied to the space-based radar.

A modularization planar antenna of ordered expansion of inflatable driving belongs to the space-borne antenna technology field. The problem is solved of the existence of the current Z-shaped folding bar-shaped planar antenna. The antenna comprises a Z-shaped folding antenna panel formed by hinging from head to tail in order of a plurality of plane signal receiving and dispatching modules, support arms are respectively arranged along the edges of two sides, perpendicular to the joint, of the antenna panel, the support arms employ flexible gas tubes, and the support arms are configured to bond the connection cloth which coats the support arms with the antenna plane; and one ends, at the same side, of the two support arms are provided with end caps, the back of the antenna panel is provided with a truss, the truss is formed by bonding a plurality of the flexible gas tubes, the positions corresponding to joints of the antenna planes in the support arms are provided with flexible separation blades, the diameters of the through holes on each flexible separation blade gradually become small from one end provided with the end cap, and the position corresponding to each plane signal receiving and dispatching module at the surface of the connection cloth coating the support arms is provided with nylon thread gluing. The modularization planar antenna of ordered expansion of inflatable driving is used for a space-borne platform.

The invention discloses an inflatable membrane reflecting surface device with a profile adjustment function. The inflatable membrane reflecting surface device comprises an annular mounting base frame and a reflecting surface edge support, wherein the reflecting surface edge support is arranged on the inner side of the annular surface of the mounting base frame; a canopy with a paraboloid and a membrane reflecting surface which are symmetrically distributed up and down along the annular surface of the reflecting surface edge support are arranged in an inner ring of the reflecting surface edge support; a support framework with a mesh structure is distributed on the outer surface of each of the canopy and the membrane reflecting surface; and a plurality of vertical adjusting devices are arranged on the mesh and cable intersection points of the support framework on the outer surface of the membrane reflecting surface. By the inflatable membrane reflecting surface device, adverse effects of various errors on the profile accuracy in the processing process of the reflecting surface can be compensated; the profile accuracy of the reflecting surface can be effectively improved; the structure is simple; and the manufacturing period is short.

The invention relates to an inflatable antenna with an expandable space. The inflatable antenna at least comprises a flexible antenna folding surface and an unfolding assembly. The unfolding assemblyis composed of at least two stages of unfolding assemblies which can be sequentially driven by taking the inflation pressure as the driving force thereof and respectively connected to different heights on the folding surface of the flexible antenna. The first stage of unfolding assembly can expand outwards under the driving effect of taking the inflation pressure as the driving force applied to the first stage of unfolding assembly so as to drive at least one part of the folding surface of the flexible antenna to unfold. When the first stage of unfolding assembly is expanded to a first-stage complete unfolding position, the second stage of unfolding assembly expands in a graded manner in such a way that the shape memory effect of a shape memory material plate positioned on the folding surface of the flexible antenna is released under the effect of the driving force applied to the second stage of unfolding assembly. In this way, the folding surface of the flexible antenna is controllably unfolded in an incomplete or complete space manner in a graded manner from bottom to top in a manner of increasing the effective unfolding area and reducing the unfolding impact overload.

The invention discloses a space columnar paraboloid thin plate antenna based on an inflatable structure. The antenna comprises a thin plate antenna, the inflatable structure, a storage tube and a support arm. The thin plate antenna is fixedly connected with the inflatable structure and is folded on the storage tube. The support arm is arranged on the lower end of the inflatable structure. According to the invention, the antenna has the advantages of simple design construction and good processing manufacturability and assembling manufacturability; the thin plate antenna construction is used; deformation energy is stored in a folded state; deformation energy is released in an unfolding process; the power consumption demand of a drive device is reduced; the antenna has the characteristics of large storage capacity and light weight; the inflatable structure is used; the inflatable structure is inflated to unfold the entire antenna surface; the unfolding surface of the antenna is ensured; and the unfolding stiffness of the antenna surface is improved.

The invention discloses an externally inflatable type transient electromagnetic transmitting and receiving antenna. The antenna comprises a supporting frame with a communicated air passage. The air passage in the supporting frame is controlled by an air valve, and a pressure gauge is arranged at an inlet of the air passage. Receiving/ transmitting antenna external connectors are arranged outside the supporting frame. Each external connector is correspondingly connected with a receiving/ transmitting antenna arranged in the air passage. An elastic safety valve is arranged on the outer surface of the supporting frame. The supporting frame can be quickly expanded to realize the supporting effect through the inflating effect, so that the transient electromagnetic receiving and transmitting antenna is in a normal working state. According to the invention, the air thermal expansion effect is introduced, and the receiving/ transmitting antenna is arranged in the air passage. Due to the fact that a coil can generate heat during working, the temperature in the air passage rises. Meanwhile, the volume of the air is increased. As a result, the safety valve installed in the air passage is usedfor stabilizing the internal pressure of the air passage.

The invention provides a flexible inflatable antenna floating body inflation control device, which comprises a launcher barrel, a casting assembly, a flexible inflatable antenna floating body and a head cover assembly, wherein the casting assembly is arranged at the bottom part of the launcher barrel; the flexible inflatable antenna floating body comprises an antenna, an antenna bracket, a flexible floating bag and a gas cylinder; the antenna is hermetically fixed on the antenna bracket; two ends of the flexible floating bag are hermetically connected with the antenna bracket and the gas cylinder; the antenna bracket and the gas cylinder achieve locking and unlocking through rotary coordination; and when the antenna bracket and gas cylinder sealing gaskets are pressed, an inflating channel of the gas cylinder to the floating bag is blocked. After the casting assembly casts the flexible inflatable antenna floating body out of the launcher barrel, the antenna bracket and the gas cylinder sealing gaskets are loosened; the inflating channel of the gas cylinder to the floating bag is opened; a compressed gas in the gas cylinder is inflated into the floating bag until the floating bag is full; a flexible inflatable beidou floating body floats on water; and a beidou antenna carries out communication and positioning. Assembly and pneumatic operation of the flexible inflatable antenna floating body can be conveniently finished; and the reliability of a flexible inflatable antenna floating body assembly is improved.

The invention discloses a flexible antenna structure, comprising a housing. The housing comprises a holding portion and a passageway portion. The holding portion is internally provided with a holding cavity. The passageway portion is internally provided with a passageway channel. The holding cavity is internally provided with an air bag and liquid metal. The outer side of the holding portion is provided with an air pump. The air pump is communicated with the air bag through an air pipe. The internal of the holding portion is provided with a hinge device. When the flexible antenna structure is used, the air bag is inflated through the air pump, to make the air bag expand and the liquid metal is extruded into the passageway channel. Then, according to requirements, the passageway portion is bended into different shapes through the hinge device, to achieve optimal receiving and emission states. The flexible antenna structure ensures an electronic device to have good communication performance.

A deployable satellite mast consisting of an inflatable tube, which is stored in fan-fold form before deployment and can be deployed by filling the tube with a gas, and which comprises a device for reinforcing and facilitating the deployment of the mast, which device is external to the mast and comprises one or more stays, first ends of which are wound on a reel device and second ends of which are secured to the tube, with the stays unwinding from the reel when the mast is deployed.

The invention discloses a parabolic cylinder antenna deployable mechanism with multiple hyperelastic hinges. The parabolic cylinder antenna deployable mechanismantenna comprises a triangular prism extension arm, a transverse rib mechanism, a synchronous hinge and a parabolic cylinder antenna., wherein tThe triangular prism extension arm is composed of a triangular rod, a longitudinal rod, a hyperelastic hinge, a longitudinal rod joint and a rope, the transverse rib is composed of a straight rod and a hyperelastic hinge, the synchronous hinge is composed of a synchronous gear, a connecting rodjoint and a support frame, and the parabolic cylinder antenna is a metal mesh surface film antenna. According to the parabolic cylinder antenna deployable mechanism with the multiple hyperelastic hinges, the mass of the whole mechanism is reduced, self-locking can be achieved after the mechanism is completely unfolded, the phenomena of friction and jamming in the unfolding process are reduced, andtherefore thus the whole mechanism is simple in structure and large in unfolding and folding ratio; the synchronism of unfolding of the transverse ribs is ensured by the synchronizing mechanism; theexpansibility of the triangular prism extension arms and the transverse ribs is high, so that the deployable mechanism can obtain an the antenna of a hundred-meter level or a larger scale by controlling the number of the modules.