摘要:
Slot transmission lines are formed in dielectric substrates. Several of such substrates can be stacked together. When stacked together, the conductive surfaces that form the transmission lines can be terminated in the same plane whereat the conductive surfaces form contact terminals. The co-planar contact terminals can be coupled to contact points on a circuit board. Signals on the circuit board can thereby be coupled into the slot transmission lines that extend through the dielectric substrates.
摘要:
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. A pair of differential signal vias in a circuit board are surrounded by an opening that is formed within a ground plane disposed on another layer of the circuit board. The vias are connected to traces on the circuit board by way of an exit structure that includes two flag portions and associated angled portions that connect the flag portions to circuit board traces. In an alternate embodiment, the circuit board traces that leave the differential signal vias are disposed in one layer of the circuit board above a wide ground strip disposed on another layer of the circuit board.
摘要:
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 they meet with and join to the transmission lines portions of the traces.
摘要:
An electrical connector having a plurality of connector units each having a pair of columns of edge coupled differential signal pairs separated by a ground shield terminal. The ground shield terminals each face a different signal pair of terminals in an adjacent column. Notwithstanding the different size and configurations of the ground and signal terminals, the terminals have mounting tail portions that are disposed in a uniform array different from the arrangement of the body portions of the terminals of the connector unit. The mounting tail portions are of a reduced length which benefit the electrical performance of the connector where it meets its supporting circuit board.
摘要:
An electrical connector having a plurality of connector units each having a pair of columns of edge coupled differential signal pairs separated by a ground shield terminal. The ground shield terminals each face a different signal pair of terminals in an adjacent column. Notwithstanding the different size and configurations of the ground and signal terminals, the terminals have mounting tail portions that are disposed in a uniform array different from the arrangement of the body portions of the terminals of the connector unit. The mounting tail portions are of a reduced length which benefit the electrical performance of the connector where it meets its supporting circuit board.
摘要:
An electrical connector having a plurality of connector units each having a pair of columns of edge coupled differential signal pairs separated by a ground shield terminal. The ground shield terminals each face a different signal pair of terminals in an adjacent column. Notwithstanding the different size and configurations of the ground and signal terminals, the terminals have mounting tail portions that are disposed in a uniform array different from the arrangement of the body portions of the terminals of the connector unit. The mounting tail portions are of a reduced length which benefit the electrical performance of the connector where it meets its supporting circuit board.
摘要:
A backplane electrical connector electrically and physically connects a daughter card printed circuit board to a backplane printed circuit board. The electrical connect can be of a two-piece construction including a daughtercard connector mateable with a pin header. The daughtercard connector can be assembled from a plurality of wafers which each can include a plurality of conductive leads. The wafers can have an attachment edge that lies adjacent to the daughtercard and a mating edge that is directed toward the pin header. Each conductive lead can include a bifurcated contact extending from the mating edge and each can have a first arm and a second arm. The first and second arms can provide two redundant points of contact with a corresponding conductive pin disposed in the pin header.
摘要:
A plug connector is disclosed that has a body portion and a circuit card extending forwardly of a mating face of the connector. The circuit card is protected in place by one or more protective flanges that extend forwardly from the body portion and which flank the circuit card to protect it from stubbing and to provide a means for aligning the plug connector with the receptacle connector. The body portion has a hollow frame that supports the circuit card and the interior of the frame is filled with a molding material, such as plastic.
摘要:
A shielded housing that provides a shield to a circuit board connector of the SFP-style includes a conductive body that encompasses the connector. The housing has an opening that defines an entrance of the housing through which an opposing mating connector may be inserted. The housing also includes a pair of engagement tabs that are bent inwardly of the housing at an angle thereto and these tabs engage openings formed in a shell of a plug connector that mates with the SFP-style connector. The tabs rest in the openings and may be released by way of latching mechanism that is part of the plug connector. This mechanism includes a handle and two arms that extend lengthwise. The arms end in cam portions that contact and lift the engagement ends out of the plug connector shell openings to unlatch the plug connector from the SFP-style connector.
摘要:
An EMI gasket takes the form of a formed conductive shroud that completely encircles a metal shielding cage. The shroud has an opening that is surrounded by a plurality of sides and all of the sides contain slots that receive spring contacts of a metal shielding cage. The slots contain shoulders to limit the travel of the spring contacts within the shroud slots and thereby limit the travel of the shroud on the shielding cage.