Abstract:
An embodiment of a cable system includes a cable that has a conductor, a power layer and dielectric material. The conductor is operative to carry a signal, the dielectric material is located at least partially between the conductor and the power layer, and the power layer is operative as ground. The power layer is formed of a conductive material and includes a first region and an adjacent second region. The first region includes a greater amount of the conductive material than the second region so that the power layer is less resistant to bending along the second region than along the first region. Methods and other systems are also provided.
Abstract:
In a writing board wherein an opening is defined at a predetermined position of a film-like insulating substrate, an electric wiring provided with a connection terminal covering the opening is disposed on a principle plane of the insulating substrate, and a conductive member to be connected with the connection terminal of the electric wiring is disposed inside the opening; the conductive member having a thickness from a surface on which the electric wiring of the insulating substrate has been disposed is thinner than that of the insulating substrate.
Abstract:
The invention relates to a method of producing an electronic unit of a radio system and an electronic unit of a radio system. The electronic unit comprises a mechanical part, a circuit board attached to the mechanical part and an electronic component connected to the circuit board. The method comprises mounting (1702) the electronic component in a cavity provided for the electronic component in the mechanical part; placing (1704) the circuit board on the electronic component and the mechanical part; connecting (1706) the electronic component and the circuit board together using electric coupling members for aligning them with respect to each other and for forming an electrical connection between electric connecting means of the circuit board and electric connecting means of the electronic component; and attaching (1708) the electronic component and the circuit board to each other and to the mechanical part automatically so that the electronic component will be in contact with the mechanical part.
Abstract:
An air dielectric printed circuit board fabrication method is disclosed based on the principles of suspended substrate transmission lines as used in microwave assemblies. The transmission line conductor is on a thin dielectric layer suspended in air between two conductive planes. The ground in the area around the transmission line may be cut back either by milling or by photo-etching to preclude shorting the transmission line.
Abstract:
A heatsink for a printed circuit board (PCB) overlies most or all of the board. It is clamped tightly to the board with its board-facing surface in close proximity to the heat-generating components on the board. A pliant, thermally-conductive dielectric layer is sandwiched between the PCB and the facing surface of the heatsink. Lands at various heights are formed on the heatsink surface facing the PCB to be in good heat-conducting proximity to the surfaces of heat-generating circuit components of various heights on the PCB.
Abstract:
As a substrate having a fine line and capable of suppressing crack generation in the substrate and peeling of the fine line, the invention discloses a configuration in which plural recesses are arranged on the fine line, and particularly a configuration in which the interval of the plural recesses does not exceed 200 nullm. There is also disclosed a configuration in which the plural recesses are arranged along a direction crossing the longitudinal direction of the fine line.
Abstract:
The invention provides a method for manufacturing printed wiring substrates which can manufacture printed wiring substrates each having resin dielectric layers of uniform thickness and excellent surface flatness while maintaining favorable cutting performance in a dicing step. A multi-printed wiring-substrate panel is manufactured which includes a metal plate having a first main surface and a second main surface, and resin dielectric layers disposed on the first and second main surfaces. The metal plate has first depression portions and second depression portions. The first depression portions are opened at the first main surface and arranged discontinuously along predetermined cutting lines. The second depression portions are opened at the second main surface and arranged discontinuously along the predetermined cutting lines. The multi-printed wiring-substrate panel is cut along the predetermined cutting lines into a plurality of printed wiring substrates.
Abstract:
A carrier member is provided that has a plurality of landing pads thereon where at least one of the landing pads has a depression therein to hold at least one solder terminal of a device to be mounted thereto. Embodiments include a ceramic or a bismaleimide-triazine epoxy laminate carrier having an array of landing pads formed by depositing a eutectic solder, where each landing pad in the comer of the array has a depression therein.
Abstract:
Self-aligning combination of a substrate with a chip is provided, using reverse patterns of raised recesses and raised shapes on the respective substrate and chip surfaces. High-force contact bump production is avoided. Reliable contact between a chip and substrate is achieved, with minimized skewing after chip placement.
Abstract:
In preferred embodiments, a method of manufacturing a hybrid integrated circuit device is provided, in which a plurality of circuit substrates 10 are manufactured from a single metal substrate 10Anull by dicing. In some embodiments, the method includes: preparing a metal substrate 10Anull having an insulating layer 11 formed on the top surface thereof; forming a plurality of conductive patterns 12 on the top surface of insulating layer 11; forming grooves 20 in lattice form on the rear surface of metal substrate 10Bnull; mounting hybrid integrated circuits onto conductive patterns 12; and separating individual circuit substrates 10 with, for example, a rotatable cutter.