Patent•
Sandwich vehicle structure having integrated electromagnetic radiation pathways
28 Oct 2009-
TL;DR: In this paper, the authors propose a sandwich vehicle structure that allows for the confined propagation of electromagnetic radiation within the sandwich vehicle, where the core is composed of a core medium and a plurality of spaced apart core members embedded in the core medium.
Abstract: A sandwich vehicle structure may allow for confined propagation of electromagnetic radiation within the sandwich vehicle structure. The sandwich vehicle structure may include at least one upper conducting plate, at least one lower conducting plate, and a core extending between the upper and lower conducting plates. The core may comprise a core medium, and a plurality of spaced apart core members embedded in the core medium and extending between the upper and lower conducting plates. The core medium and the core members may allow for the propagation of electromagnetic radiation within the core.
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Patent•
08 Nov 2007
TL;DR: In this article, a composite material and the foam in the form of the stringer is cured to form a cured stringer, and the mandrel from the foam is removed to form the hollow composite stringer.
Abstract: A method and apparatus for a composite stringer. A method is used for manufacturing a hollow composite stringer. Foam is formed with a mandrel installed into the foam. A composite material and the foam is laid up onto a tool in a form of a stringer. The composite material and the foam in the form of the stringer is cured to form a cured stringer. The mandrel from the foam is removed to form the hollow composite stringer.
49 citations
Patent•
30 Jun 2010
TL;DR: A method and apparatus for manufacturing a composite structure is described in this article. But this method requires the use of a filler material with a barrier material for a channel in the filler material.
Abstract: A method and apparatus for manufacturing a composite structure. A filler material with a barrier material for a channel in the filler material is formed. A composite material and the filler material with the barrier material are laid up onto a tool in a shape of the composite structure. The composite material and the filler material in the shape of the composite structure are cured.
35 citations
Patent•
26 May 2010
TL;DR: In this article, a first wireless signal (426) is transmitted from a base station (402) to a sensor unit (404), at least a portion of the first signal is changed into power (428) for the sensor unit using (404) a power harvesting unit (412) in the sensor units.
Abstract: A method and apparatus for operating a sensor system (400). A first wireless signal (426) is transmitted from a base station (402) to a sensor unit (404). At least a portion of the first wireless signal (426) is changed into power (428) for the sensor unit using (404) a power harvesting unit (412) in the sensor unit (404). Information is received from a number of sensors (418) associated with the sensor unit (404). The information (432) is transmitted to the base station (402) using a second wireless signal (426).
28 citations
Patent•
16 Jul 2013
TL;DR: In this article, a method for generating sensor data is presented, where a number of wireless power signals are sent to a group of sensor units, and the data collection signal is sent to the group of sensors after the number of power signals have been sent.
Abstract: A method for generating sensor data is presented. A number of wireless power signals is sent to a group of sensor units. A number of wireless data collection signals is sent to the group of sensor units after the number of wireless power signals have been sent to the group of sensor units. Sensor data in a number of wireless response signals is received from the group of sensor units.
26 citations
Patent•
02 May 2008
TL;DR: In this article, a process for fabricating a fiber composite underbody panel for a vehicle is described, where a first fiber composite sheet is laid up on a suitable form or tool, and current carrying wiring that is normally carried by the floor is laid in place on the first sheet, with the ends of the wires extending beyond the edges of the sheet.
Abstract: A process for fabricating a fiber composite underbody panel for a vehicle begins by laying-up a first fiber composite sheet on a suitable form or tool. Current carrying wiring that is normally carried by the floor is laid in place on the first sheet, with the ends of the wires extending beyond the edges of the sheet. The wires are shielded to prevent the radiation of fields therefrom into the interior of the vehicle. Fiber optic cable is used to carry signals. A second fiber composite sheet is then laid-up on the first sheet. The two sheets with the embedded wires are placed in a heated mold to form the sheets into the desired finished shape and configuration. The ends of the copper wires and the fiber optic cables are then terminated by connectors so that they may be later coupled to the circuitry of the vehicle.
23 citations
References
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Patent•
10 Jul 2000TL;DR: In this article, a waveguide with multilayer ceramic technique is described. But the waveguide is not a fixed part of the circuit structure as a whole. But it can be integrated into a circuit structure manufactured with the multi-layer ceramic technique.
Abstract: The invention relates to a waveguide manufacturing and a waveguide manufactured with the method, which can be integrated into a circuit structure manufactured with the multilayer ceramic technique. The core part ( 23, 33, 43, 53 a , 53 b , 53 c ) of the waveguide is formed by a unit assembled of ceramic layers, which is limited in the yz plane by two impedance discontinuities and in the xz plane by two planar surfaces ( 24, 25, 34, 35, 54 a , 54 c , 55 a , 55 b , 55 c ) made of conductive material. The conductive surfaces can be connected to each other by vias made of conductive material ( 38, 39, 48, 49 ). The waveguide manufactured with the method according to the invention is a fixed part of the circuit structure as a whole.
61 citations
Patent•
15 Aug 1988TL;DR: The planar polymer light guide network (PLGN) as mentioned in this paper is a very low cost, fully integrated, large scale planar polycarbonate (PPLG) light-guide network.
Abstract: The invention introduces the concept of very low cost, fully integrated, large scale planar polymer light guide networks. These networks are intended primarily for automotive applications, including data communication, multiplex, sensor, switch and display networks. However, the concept is also applicable in other areas where the length of the network does not exceed a few meters. The basic idea is to `cut` a thin sheet of clear plastic (polymethylmetacrylate polycarbonate, or polystyrene) into a whole network consisting of optical links, couplers, sensors, etc. . . . In addition to being low cost, planar polymer light guide networks extend the one dimensional geometry of fiber optics into two dimensions, adding tremendous design capability and versatility.
42 citations
Patent•
06 Jun 2003
TL;DR: In this article, a three-dimensional periodic structure, a method of producing the same, a high frequency element, and high frequency apparatus that can be applied to a signal transmission path or a functional element in a frequency range lower than optical frequencies, such as the microwave range, is provided.
Abstract: A three-dimensional periodic structure, a method of producing the same, a high frequency element, and a high frequency apparatus that can be applied to a signal transmission path or a functional element in, for example, a compact functional element in a frequency range lower than optical frequencies, such as the microwave range are provided. The three-dimensional periodic structure includes a three-dimensional periodic structure component which includes two substances having different dielectric constants periodically distributed in three-dimensional axial directions, a dielectric layer having a predetermined thickness provided at the periphery thereof, and a conductor provided on external surfaces of the dielectric layer. A third material which is different from the two substances and having predetermined dimensions embedded into the three-dimensional periodic structure component can be provided. A transmission path integrally equipped with a conductor is constructed, which is used as a pipe of a waveguide.
26 citations
Patent•
14 Dec 2004TL;DR: In this article, a waveguide is used to transmit signals up and down the communications tower, thereby eliminating at least some cabling, and the waveguide can be used to improve the performance of the communications system.
Abstract: A communications tower, or other structure is provided with at least one waveguide defined in a structural support. The waveguide can be used to transmit signals up and down the communications tower thereby eliminating at least some cabling.
15 citations
31 Jul 1991
TL;DR: In this article, a meandering transmission line (22) or coaxial cable is adhered to a dielectric substrate (20), where the microwave signals propagating through them are reflected at crossover points along the way creating a signature reflection wave.
Abstract: A structure integrity monitoring apparatus and method for use with certain structures such as air-frame structures. A meandering transmission line (22) or serpentine coaxial cable is adhered to a dielectric substrate (20). The dielectric substrate may be a composite panel of the air-frame structure. A microwave signal is introduced at one end of the transmission line (22) or coaxial cable and absorbed at the other end by an appropriate signal absorbing device. For use of the meandering transmission line (22), generally two conductors (22, 24) are affixed on opposite sides of the dielectric substrate (20). In this manner, an electric field created by the two conductors (22, 24) by the microwave signals propagating through them is confined within the dielectric substrate (20). As the signals travel down the transmission conductors (22, 24), they will be reflected at crossover points along the way creating a signature reflection wave. If the dielectric substrate is flawed, a perturbation in the electric field caused by the flaw will create a reflection of the microwave signal at the flaw area. When this reflection signal is compared with the signature signal, it can be determined where and if a flaw is present.
14 citations