Abstract:
A transmission system includes an AC termination connector including an AC termination circuit including a resistor and a capacitor, at an open end of a stub of a through-hole provided in a circuit board. A connector includes an AC termination circuit including a resistor and a capacitor, with the connector connected to an open end of a stub of a through-hole provided in a circuit board
Abstract:
A digital protective relay includes at least one daughter PCB having an electronic circuit which generates electromagnetic interference noise or high frequency noise; and a backplane printed circuit board having, on an upper surface thereof, a plurality of first connectors for connection with the daughter PCB, connected to the daughter PCB through the first connectors, and providing a noise discharge path along which the electromagnetic interference noise or the high frequency noise from the daughter PCB flows to an external ground.
Abstract:
The invention provides an amplification module for an optical printed circuit board, the optical printed circuit board including plural polymer waveguide sections from independent waveguides, each of the sections being doped with an amplifying dopant, wherein the plural waveguide sections are routed so as to pass through an amplification zone in which the plural polymer waveguide sections are arranged close or adjacent to one another, the amplification module including: a pump source including plural light sources arranged to provide independently controllable levels of pump radiation to each of the plural waveguide sections. In an embodiment, the amplification module also includes plural polymer waveguide sections corresponding to the plural polymer waveguides of the printed circuit board on which in use the amplification module is to be arranged, each of the sections being doped with an amplifying dopant.
Abstract:
A midplane has a first side to which contact ends of a first differential connector are connected and a second side opposite the first side to which contact ends of a second differential connector are connected. The midplane includes a plurality of vias extending from the first side to the second side, with the vias providing first signal launches on the first side and second signal launches on the second side. The first signal launches are provided in a plurality of rows, with each row having first signal launches along a first line and first signal launches along a second line substantially parallel to the first line. The second signal launches are provided in a plurality of columns, with each column having second signal launches along a third line and second signal launches along a fourth line substantially parallel to the third line.
Abstract:
Embodiments of the present invention address deficiencies of the art in respect to via structure utilization in a PCB design and provide a novel and non-obvious method, system and computer program product for impedance discontinuity remediation for via stubs and connectors in a PCB. In one embodiment a method for impedance discontinuity remediation in a PCB can be provided. The method can include configuring a pre-distortion filter to negate an impedance discontinuity in an electrical signal caused by a transmission line with one of a via stub or a connector. The method further can include pre-distortion filtering an electrical signal before transmitting the electrical signal over the transmission line. Finally, the method can include transmitting the pre-distortion filtered electrical signal over the transmission line.
Abstract:
Embodiments of the present invention address deficiencies of the art in respect to via structure utilization in a PCB design and provide a novel and non-obvious method, system and computer program product for impedance discontinuity remediation for via stubs and connectors in a PCB. In one embodiment a method for impedance discontinuity remediation in a PCB can be provided. The method can include configuring a pre-distortion filter to negate an impedance discontinuity in an electrical signal caused by a transmission line with one of a via stub or a connector. The method further can include pre-distortion filtering an electrical signal before transmitting the electrical signal over the transmission line. Finally, the method can include transmitting the pre-distortion filtered electrical signal over the transmission line.
Abstract:
A motherboard interconnection method includes positioning a first and a third electronic elements on a top layer of a motherboard interconnection device, and positioning a second and a fourth electronic elements on a bottom layer of the motherboard interconnection device. The method connects a first end of the first electronic element on the top layer to the first end of the second electronic element on the bottom layer with a first via hole, and connects the first end of the third electronic element on the top layer to the first end of the fourth electronic element on the bottom layer with a second via hole. The method further connects a second ends of the two electronic elements on the top layer to a first part, and connects the second ends of the two electronic elements on the bottom layer to a second part.
Abstract:
A backplane for a computing system may include a connector configured to provide a detachable mechanical coupling with a circuit board, and an optical signal path configured to carry optical signals. In addition, an optical bypass switch may be configured to couple optical signals from the optical signal path to the circuit board and to couple optical signals from the circuit board to the optical signal path responsive to an enabling signal. The optical bypass switch may be further configured to transmit optical signals therethrough to bypass the circuit board responsive to an absence of the enabling signal. Related circuit boards, computing systems, bypass switches, and methods are also discussed.
Abstract:
A midplane has a first side to which contact ends of a first differential connector are connected and a second side opposite the first side to which contact ends of a second differential connector are connected. The midplane includes a plurality of vias extending from the first side to the second side, with the vias providing first signal launches on the first side and second signal launches on the second side. The first signal launches are provided in a plurality of rows, with each row having first signal launches along a first line and first signal launches along a second line substantially parallel to the first line. The second signal launches are provided in a plurality of columns, with each column having second signal launches along a third line and second signal launches along a fourth line substantially parallel to the third line.
Abstract:
A memory module includes a substrate, a plurality of signal lines, a clock line and a plurality of memory devices. The plurality of signal lines including first and second signal lines routed alongside one another where, for each of the first and second signal lines, a respective signal, starting at a corresponding first edge finger, traverses in sequence, a respective first segment of a respective signal line, a respective turn portion of the respective signal line, and a respective second segment of the respective signal line. The clock line is to provide a clock signal that traverses in sequence, a second edge finger, the first segment of the clock line, the turn portion of the clock line, and the second segment of the clock line. The respective signals traverse and the clock signal line arrive at the plurality of memory devices in sequence.