Abstract:
A radio communication device (30) having an in-situ strain sensor (20) for measuring physical or thermal events experienced by the device. The communications device contains a radio receiver (31) that is capable of receiving a communication signal via an antenna (33). A printed circuit board (15) contains one or more strain gages (10) that are integrally formed in the circuit metallization pattern (12) on the surface of the board. The strain gages are responsive to strains induced on the circuit board by physical or thermal changes in the device's environment. The strain gages are situated in close proximity to the radio receiver. The signals generated by the strain gages are stored in on-board memory (27), and either downloaded at the end of the service life of the device, or periodically transmitted to a remote location by an optional radio transmitter (32).
Abstract:
A card comprising an integrated circuit (7) with pins (6) connected to contact pads (5) via a pattern of curved conductors made of a conductive polymer, is disclosed.
Abstract:
An arrangement in which a transmission line (60) on a multilayer printed circuit board which has an impedance which is set by forming apertures or windows (90) (fenestration) in a nearest conductive reference plane (70).
Abstract:
A printed wiring board comprising multiple rows of daughter printed wiring boards, a main plated lead formed between the rows of daughter printed wiring boards, and subsidiary plated leads which connects the pattern constituting the daughter printed wiring boards to the main plated leads. The main plated lead is a zigzag line including two groups of line segments on both sides of a cutting line between the rows of daughter boards. Since the printed wiring board of this invention has such a constitution, no punching step is required for electrical isolation and, only by cutting the printed wiring board along the cutting line, the subsidiary plated leads connected to the main plated lead can be collectively electrically isolated.
Abstract:
Process and device for attenuating perturbing radiation in printed circuit boards provided with electronic circuits, in particular for a control device for an internal combustion engine in a vehicle. Each printed circuit board has conducting tracks (4, 6) on its front and rear faces (3, 5) (double-layer technique), arranged in a layout determined by this double-layer technique. Improved, cost-effective attenuation of perturbing radiation is achieved by using a multi-layer printed circuit board with the same layout, which has at least one embedded, large-area, preferably complete-area, conductor coating (8, 9) which is through hole plated with the corresponding conducting tracks on the front and/or rear faces. The invention also concerns the formation of anti-interference capacitors by means of conductive coatings.
Abstract:
Disclosed herein are printed circuit boards (PCBs) (100) with patterned ground structure filters and data storage devices comprising such PCBs. Each PCB comprises a resonator (120) having an L-shape or a zig-zag shape in a plane of the printed circuit board and at least one signal trace (110). The resonator has a first dimension (122) and a second dimension (124) in the plane of the printed circuit board. A portion of the at least one signal trace is situated over the resonator and is separated by a distance from the resonator by a dielectric material. In some embodiments, at least part of the portion of the at least one signal trace extends in a same direction as the first dimension (in the case of an L-shaped resonator) or tracks the zig-zag shape of the resonator (in the case of a zig-zag-shaped resonator).
Abstract:
Ein Trägersubstrat für eine Lichtanwendung, aufweisend zumindest eine elektrisch leitende Trägerschicht (3), wobei die Trägerschicht (3) als vorbestimmtes Muster mit Anschlusspunkten (7a, 7b) für Leuchtmittel ausgestaltet ist und zumindest bereichsweise zumindest drei zumindest abschnittsweise mäanderförmige Leiterbahnen (5a, 5b, 5c) in dem vorbestimmten Muster ausgebildet sind zur Verschaltung der Leuchtmittel, wobei eine äußere Sinuosität zumindest einer äußeren Leiterbahn (5a, 5b) größer ist als eine innere Sinuosität zumindest einer inneren Leiterbahn (5c). Auch betrifft die vorliegende Erfindung ein Verfahren zur Herstellung eines Trägersubstrats.
Abstract:
An item may have a flexible support structure and may include a flexible component. The flexible component may have electrical components mounted on component mounting regions in a flexible circuit substrate. The component mounting regions may be interconnected by serpentine interconnect paths or other flexible interconnect paths. The flexible circuit substrate and component mounting regions may extend along a longitudinal axis of the flexible component or may form a two-dimensional array. Two-dimensional mesh-shaped flexible circuit substrates may be used in forming displays. The mesh-shaped flexible circuit substrates may be auxetic substrates that widen when stretched (e.g., structures with a negative Poisson's ratio that become thicker perpendicular to applied force when stretched) and that therefore reduce image distortion. Temporary tethers may help hold flexible circuit substrates together until intentionally broken following assembly of a flexible component into the flexible support structure.
Abstract:
A conductive tape formed by laying a conductive pathway on a tape layer is disclosed. Various apparatus and methods for laying conductive pathways to form conductive tape are disclosed. The conductive pathways may be laid by varying the lateral position of the conductive pathway on the tape substrate. Such patterns all stretchable conductive tape to be realized. Multiple conductive pathways may be laid in the tape and the lateral separation of the pathways in the tape may vary. In some embodiments the pathways are formed from conductive yarn or by printing or laying conductive ink.
Abstract:
A stretchable electronic assembly comprising a stretchable body, a plurality of electronic components encapsulated in the stretchable body, at least one meandering conductor connected to at least one electronic component of the plurality of electronic components, at least one hollow pocket formed in the stretchable body, the at least one meandering conductor encapsulated in the stretchable body and the at least one meandering conductor located within the at least one hollow pocket formed in the stretchable body.