Abstract:
A system for transmitting or receiving signals may include a dielectric substrate having a major face, a communication circuit, and an electromagnetic-energy directing assembly. The circuit may include a transducer configured to convert between RF electrical and RF electromagnetic signals and supported in a position spaced from the major face of the substrate operatively coupled to the transducer. The directing assembly may be supported by the substrate in spaced relationship from the transducer and configured to direct EM energy in a region including the transducer and along a line extending away from the transducer and transverse to a plane of the major face.
Abstract:
Interference shielded, for example a RFI and/or EMI shielded, electronics module, such as a circuit board (10) or a printed circuit or a corresponding electronics module, which interference shield forms a contact (4) with at least one edge zone (11) of the circuit board layers (12, 13, 14) of the circuit board, which contact functions in the electronics module as a means of grounding and which circuit board comprises: an outermost electrically conductive layer (3) providing the interference shield of the electronics module; at least one circuit card layer (12, 13, 14) unit comprising electronics components and a wiring pattern embedded into a filling material of the circuit board layer: and encapsulating activation material layer (2), which is advantageously a substrate layer or a resin layer, and which overlays above the topmost circuit board layer (12), and which is arranged into a space between the outermost layer (3) and topmost circuit board layer (12) to be therein conformingly against the inner surface of the outermost layer (3) for isolating the electronic components and the wiring pattern from outermost layer, whereby for providing the interference shield, there is a direct conductive contact (4) at the side edge (21) of the circuit board between the outermost layer (3) and the edge zone (11) of the circuit board layer (12, 13, 14) providing the grounding. Characteristic to the shielded module is that the outermost shield layer (3) is essentially a single-layered covering and an outermost surface layer of the circuit board unit (10). Characteristic to the method is that the same comprises steps: a panel (1) comprising several circuit board units (10) is covered by an encapsulating layer (2); individual circuit boards (10) are separated from the panel along separation lines (A-A, B-B) of the circuit board units; and a surrounding shield layer is applied as the outermost layer, which forms an electrically conductive interference shield.
Abstract:
A circuit board includes an electrically conductive sheet having an insulative coating surrounding the conductive sheet, with a surface of the insulative coating around an edge of the conductive sheet having an arcuate or rounded shape. At least one electrical conductor is conformally deposited on at least the rounded insulative coating around the edge of the conductive sheet and defined via photolithographic and metallization techniques. Each electrical conductor on the insulative coating thereon around the edge of the conductive sheet conforms to the arcuate or rounded shape of the insulative coating and, therefore, has an arcuate or rounded shape.
Abstract:
A stackable neo-layer comprising one or more embedded discrete electrical components is provided. A plurality of conductive traces, some of which terminate at a peripheral edge of the layer, are formed on sacrificial substrate in a series of process steps and discrete electrical components such as thick film components or wire bonded components are attached thereto. An under-bump metal process step is disclosed and provides for solder attachment at desired contact pad locations. The layer is encapsulated in a potting material and thinned to provide a thin, stackable layer. When assembled into a stack of layers, the electrically conductive traces terminating at the edge of the layer can be electrically connected by means of electroplating using a T-connect.
Abstract:
The invention relates to a modular microelectronic component and a method for the production thereof. The inventive method comprises the following steps: a) at least two functional layers (12, 22) are produced, each of which is provided with a planar support (10, 20), electronic components, 1 to 5, 8, 9) located on the support (10, 20), a conductor structure, and electrical first contact points (11, 21) located on the edge (6, 23) of the support (10, 20). The conductor structure contacts the electronic components at least in part while being at least partly connected to the first contact points (11, 21) on the edge (6, 23) of the support (10, 20); b) the functional layers (12, 22) are placed on top of each other layer by layer; c) the functional layers (12, 22) are electrically connected via the first contact points (11, 21). The invention makes it possible to produce an extremely compact and robust microelectronic component while the adjusting effort can be kept very low compared to other modular methods when designing the individual functional layers. Very different aspect ratios of the individual functional layers are rather unproblematic during system integration, resulting in a small amount of development effort.
Abstract:
Die Erfindung betrifft Leiterplatten, die untereinander durch flexible Leiterbahnen oder Jumper verbunden werden. Es ist wünschenswert, die Jumper in einem dem Lötprozess und in einem Schritt zusammen mit anderen SMD- und sonstigen Bauteilen auf den Leiterplatten in einem Reflow-Lötofen zu löten. Dazu sind bei der erfindungsgemäßen Leiterplatte (10), die üblicherweise mehrere Innenlagen (11) sowie innere Leiterbahnen (12) und äußere Leiterbahnen (13) aufweist, in der Stirnseite (18) seitliche Öffnungen (17) angebracht, die vorzugsweise metallisiert sind. Nach Ein- bzw. Aufbringen von Lotpaste können dort hineingesteckte Anschlußpins bzw. Anschlußdrähte (16) eines Jumpers (15) zusammen mit anderen Bauteilen auf der Leiterplatte (10) in einem Reflow-Lötofen verlötet werden.
Abstract:
Disclosed are methodologies for defining matched-impedance surface-mount technology footprints on a substrate such as a printed circuit board, for example, that is adapted to receive an electrical component having an arrangement of terminal leads. Such a footprint may include an arrangement of electrically-conductive pads (P) and an arrangement of electrically-conductive vias (V). The via arrangement may differ from the pad arrangement. The vias (V) may be arranged to increase routing density, while limiting cross-talk and providing for matched impedance between the component and the substrate. The via arrangement may be altered to achieve a desired routing density on a layer of the board. Increasing the routing density may decrease the number of board layers, which tends to decrease capacitance and thereby increase impedance. Ground vias (G) and signal vias (S) may be arranged with respect to one another in such a manner as to affect impedance. Thus, the via arrangement may be altered to achieve an impedance that matches the impedance of the component. The via arrangement may be also be altered to limit cross-talk among neighboring signal conductors. Thus, the via arrangement may be defined to balance the impedance, cross-talk, and routing density requirements of the system.
Abstract:
The invention relates to a component support, at the outer edge of which edging elements are provided so as to prevent fraying when separation occurs along said edging element.