Abstract:
A serial link interconnection arrangement for interconnecting a first printed circuit board (BoardA) with a second printed circuit board (BoardB), both boards being inserted in a backplane of a telecommunication system. The arrangement comprises a waveguide embedded in the backplane. A first end (WavA) of the waveguide is coupled to the first board (BoardA) via a first connection system (ConA), whilst the second end (WavB) of the waveguide is coupled to the second board (BoardB) via a second connection system (ConB). Each of the connection systems (ConA; ConB) comprises a transceiver (IntA; IntB) adapted to convert a parallel signal received from the printed circuit board (BoardA; BoardB) into a serial stream transmitted to an end (WavA; WavB) of the waveguide via an antenna (AntA; AntB), and vice-versa.
Abstract:
A multilayer midplane board has a front side and a back side and includes a first partially plated through-hole; a second partially plated through-hole spaced away from the first partially plated through-hole, and a first conductive signal track that electrically couples a selected plated section of the first partially plated through-hole directly adjacent the front side to a selected plated section of the second partially plated through-hole adjacent the back side.
Abstract:
Interconnection system, comprising at least one printed circuit board (PCB) with signal traces (14, 15) and grounds (13), and a connector (4) having a plurality of signal (6) and ground (7) terminals connected to signal traces (14, 15) and grounds (13) of the PCB, the signal traces and signal terminals of the connector connected to the signal traces providing signal paths each extending between a first end and a second end having respectively first and second characteristic impedance. The system has at least a part of a signal path comprising an impedance transition section (17) having an impedance gradually changing from a first value substantially corresponding to the first characteristic impedance to a second value substantially corresponding to the second characteristic impedance.
Abstract:
The invention relates to a backplane for an electronic mounting rack having a basic backplane (1) with a plurality of contact strips, wherein a clearance, into which at least one additional backplane (3) can be inserted, is provided on the basic backplane (1).
Abstract:
A differential connector has a plurality of rows. Each row includes a plurality of signal conductors provided as differential pairs. Each signal conductor has a first contact end connectable to a printed circuit board, a second contact end, and an intermediate portion having a first width. For each differential pair, one first contact end lies along a first line parallel to the plurality of rows and the other first contact end lies along a second line parallel to and spaced from the first line. The differential connector further includes a plurality of ground conductors, with each ground conductor corresponding to a differential pair. Each ground conductor has a first contact end connectable to the printed circuit board, a second contact end, and an intermediate portion having a second width that is at least twice the first width.
Abstract:
A circuit board (200, 300, 400) design is disclosed that is useful in high speed differential signal applications uses either a via arrangement or a circuit trace exit structure. In the via arrangement, sets of differential signal pair vias (301, 303, 401, 402) and an associated ground (302) are arranged adjacent to each other in a repeating pattern. The differential signal vias (301, 303, 591) of each pair are spaced closer to their associated ground via (302a, 593a) than the spacing between the adjacent differential signal pair associated ground (302b, 593b) so that differential signal vias exhibit a preference for electrically coupling to their associated ground vias. The circuit trace exit structure involves the exit portions of the circuit traces (420, 550) of the differential signal vias (401, 402, 591) to follow a path where the traces then meet with and join to the transmission line portions (552) of the conductive traces.
Abstract:
A circuit board design is disclosed that is useful in high speed differential signal applications uses either a via arrangement or a circuit trace exit structure. In the via arrangement, sets of differential signal pair vias and an associated ground are arranged adjacent to each other in a repeating pattern. The differential signal vias of each pair are spaced closer to their associated ground via than the spacing between the adjacent differential signal pair associated ground so that differential signal vias exhibit a preference for electrically coupling to their associated ground vias. The circuit trace exit structure involves the exit portions of the circuit traces of the differential signal vias to follow a path where the traces then meet with and join to the transmission line portions of the conductive traces.
Abstract:
A novel and effective circuit board of little transmission loss and its manufacturing method. A multiwire board (100) characterized by having first and second boards (110, 130) and wires (120) which electrically connect the first and second boards (110, 130) and are exposed outside. The first and second board of this multiwire board can be bent at the wires at an arbitrary angle. Wires the surfaces of which are smoother than that of the wiring in a flexible portion of a rigid flexible board are used and therefore undergoes no skin effect. Since a circle has a cross sectional area larger than a rectangle, this multiwire board attains high-speed transmission.
Abstract:
A high-speed, high-power modular router is disclosed. As opposed to conventional designs using optical backplane signaling and/or bus bars for power distribution, the disclosed embodiments combine high-power, low-noise power distribution with high-speed signal routing in a common backplane. Disclosed backplane features allow backplane signaling at 2.5 Gbps or greater on electrical differential pairs distributed on multiple high-speed signaling layers. Relatively thick power distribution layers are embedded within the backplane, shielded from the high-speed signaling layers by digital ground layers and other shielding features. A router using such a backplane provides a level of performance and economy that is believed to be unattainable by the prior art.