Abstract:
An energy conditioner structure comprising a first electrode (120), a second electrode (80), and a shield structure (70, 110, 150) provides improved energy conditioning in electrical circuits. The structures may exist as discrete components or part of an integrated circuit. The shield structure in the energy conditioner structure does not electrically connect to any circuit element.
Abstract:
A structure of a multilayer printed wiring board having a wiring lead-out port can be easily formed. A large number of products can be easily manufactured with good size reproducibility. A method of manufacturing the same is also are disclosed. The multilayer printed wiring board is characterized by having a signal circuit conductor perfectly covered by an earth circuit in its inside and a wiring lead-out port. A signal circuit conductor having a branch pattern is preferable. The multilayer printed wiring board is manufactured by selectively etching the copper of a cladding sheet manufactured by bonding a copper foil to a nickel foil with 0.1 - 3% draft and forming a signal circuit conductor perfectly covered by an earth circuit and the wiring lead-out port.
Abstract:
Die vorliegende Erfindung stellt eine Trägervorrichtung (10) für elektrische Bauelemente bereit mit: einer ersten leitfähigen Ebene (23') zum Bereitstellen eines Bezugspotentials (23); und mindestens einer elektrisch von der ersten Ebene (23') isolierten zweiten Ebene (11') mit strukturierten Leitungen (11) zum Anbinden elektrischer Anschlusseinrichtungen (12) externer Bauelemente und zum Anbinden interner Bauelemente auf der Trägervorrichtung (10), wobei die Leitungen (11) zum Anbinden elektrischer Anschlusseinrichtungen (12) externer analoger Bauelemente und/oder Sensoren Bezugspotentialleitungen (16, 17) aufweisen, welche sich an einem ersten Stempunkt (18) sammeln, und die Leitungen (11) zum Anbinden interner Bauelemente Bezugspotentialleitungen (19, 20, 21) aufweisen, welche sich an einem zweiten Sternpunkt (22) sammeln und über mindestens eine Durchkontaktierungseinrichtung (23") mit der ersten Ebene (23') galvanisch gekoppelt sind und/oder die Durchkontaktierungseinrichtung (23") den ersten und/oder zweiten Stempunkt (18, 22) bildet.
Abstract:
A printed circuit board, wherein a fillet (F) is added to a portion which is a crossing (X) of wiring patterns (58b, 58c, 58d) and which forms an angle portion (C) of not larger than 90° to form a wiring pattern (58). The presence of the added fillet (F) prevents a wiring pattern at the crossing (X) from becoming thin and therefore the occurrence of a broken wire, non-concentration of stress on the crossing (X) does not cause broken wire at the wiring patterns and no bubbles remain between the crossing (X) of the wiring patterns and an interlayer resin insulation layer to enhance the reliability of the printed circuit board.
Abstract:
A transmission line, a resonator, a filter, a duplexer, and a communication apparatus efficiently minimize power losses due to edge effects, thereby having superior loss-reduction characteristics. A continuous line (12) and a plurality of thin lines (2) each having a predetermined length and branching from both sides of the continuous line (12) are formed on a dielectric substrate (1). According to this, substantial edges of the individual thin lines (2) do not exist, and losses due to edge effects can be efficiently minimized.
Abstract:
A packaging assembly for semiconductor memory modules using synchronous clocking signals distributed to each module within a package. The clock distribution network on the assembly is characterized by including a transmission line termination means, preferably a resistor, coupled immediately adjacent to one of the assembly input pins.
Abstract:
An electrical system wherein the electrical conductive traces on the circuit boards are routed to achieve a balanced net to reduce noise caused by transmission line reflections. A trace (202,216,248,274) is routed from the source terminal (200,214,236,260) of the net to a balanced junction (204,218,238,288) wherein if there are an odd number of load terminals, or loads, the balanced junction is located at one of the loads (204,238). The remaining loads are grouped into branches wherein each branch includes an equal number of loads. A trace is routed between each of the loads of each branch to serially connect the loads of each branch together, or, a trace is routed from a center one of the branch loads to each of the remaining branch loads, forming subbranches. In an alternate embodiment, a balanced subbranch is developed. The balanced load is connected to a pseudo-balanced load, which further receives an equal number of branches. The 3 pseudo-balanced load is then connected to another pseudo-balanced load, which may also receive an equal number of branches. This pseudo-balanced load is connected to the source. In another alternative, two balanced subbranches have their balanced loads connected to a central balanced load. This balanced load may receive even further numbers of equal branches. The balanced load is connected to the source.
Abstract:
A device for uniformly distributing current and voltage comprises first (16) and second terminals (26), a first electrical bus (14) electrically connected to the first terminal, a second electrical bus (24) electrically isolated from the first electrical bus and electrically connected to the second terminal, a plurality of electrical components (40) connected between the first and second buses so as to form a plurality of circuit paths of equal length, each circuit path running between the first terminal, the first electrical bus, one of the circuit components, the second electrical bus, and the second terminal. The plurality of electrical components are connected to the first and second buses at locations which are equidistant from the first and second terminals, respectively.
Abstract:
An electronic device according to one embodiment includes a wiring substrate, the wiring substrate having a first wiring connected to a first external terminal and a second wiring connected to a second external terminal and extending along the first wiring. Additionally, the above electronic device has a semiconductor device mounted on the above wiring substrate and electrically connected to each of the first and second wirings. Further, the above electronic device has a capacitor mounted on the above wiring substrate and electrically connected to the semiconductor device via each of the above first and second wirings. Furthermore, a distance between the above semiconductor device and capacitor is shorter than a distance between each of the above first and second external terminals and the above capacitor.
Abstract:
A method for propagating a signal from an output driver on a PCB to a number of chips on the PCB. The signal is propagated from a first transmission line connected to the output driver, to a second transmission line connected to the first transmission line and a first chip, and to a third transmission line connected to the first transmission line and a second chip. The second transmission line has a length greater than or equal to 10 times the length of the first transmission line, and the third transmission line has a length greater than or equal to 10 times the length of the first transmission line. The lengths of the first transmission line, the second transmission line, and the third transmission line cause a reduction in reflections of the signal due to a change in impedance at a junction of the first, second, and third transmission lines.