Abstract:
An electrical interconnect for passing high speed signals through an electronic system with a high density of signals and high signal integrity. The interconnect includes an electrical connector and a transition portion of a printed circuit board to which the connector is mounted. Signal conductors are connected to pads on the surface of the PCB using edge-to-pad mounting. The pads align with intermediate portions of the signal conductors such that transitions within the connector that could degrade signal integrity are avoided. The signal conductors may be positioned as individually shielded broadside coupled pairs extending in rows within the connector. Surface traces on the PCB connect the pads to signal vias aligned for vertical routing out of the connector footprint. Ground planes underlying the surface traces facilitate a transition from the signal paths in the connector to those in the PCB with low mode conversion avoiding resonances in the connector shields.
Abstract:
Embodiments related to electrical connectors including superelastic components are described. The high elastic limit of superelastic materials compared to conventional connector materials may allow for designs which provide reliable connections and high frequency operation. Superelastic components also may enable connector designs with higher densities of connections. In some embodiments, a connector includes one or more superelastic elongated members forming the mating contacts of the connector. The superelastic elongated members deform within one or more conductive receptacles to generate a suitable contact force. The conductive receptacles may include a plurality of protrusions arranged to deflect the superelastic elongated members during mating. A superelastic component may also be provided in a receiving portion of a connector, and may form a portion of a conductive receptacle.
Abstract:
An electrical interconnect for passing high speed signals through an electronic system with a high density of signals and high signal integrity. The interconnect includes an electrical connector and a transition portion of a printed circuit board to which the connector is mounted. Signal conductors are connected to pads on the surface of the PCB using edge-to-pad mounting. The pads align with intermediate portions of the signal conductors such that transitions within the connector that could degrade signal integrity are avoided. The signal conductors may be positioned as individually shielded broadside coupled pairs extending in rows within the connector. Surface traces on the PCB connect the pads to signal vias aligned for vertical routing out of the connector footprint. Ground planes underlying the surface traces facilitate a transition from the signal paths in the connector to those in the PCB with low mode conversion avoiding resonances in the connector shields.
Abstract:
An electrical connector module with openings in an insulative support selectively positioned to limit dielectric loss in a signal. The connector may include a first and second conductor including first and second sides between first and second edges. An insulative support holds the first conductor adjacent the second conductor and may have at least five pedestal portions, wherein the first pedestal portion contacts the first side of the first conductor, the second pedestal portion contacts the second side of the first conductor, the third pedestal portion contacts the first side of the second conductor, the fourth pedestal portion contacts the second side of the second conductor, and at least a portion of the fifth pedestal portion is disposed between two edges of the first and second conductors. The pedestal portions may have widths less than the widths of the first and second sides of the first and second conductors.
Abstract:
A printed circuit board includes a plurality of layers including attachment layers and routing layers; first and second signal vias forming a differential signal pair, the first and second signal vias extending through the attachment layers and connecting to respective signal traces on a breakout layer of the routing layers; an antipad of a first type around and between the first and second signal vias in one or more of the attachment layers; and antipads of a second type around the first and second signal vias in at least one routing layer adjacent to the breakout layer.
Abstract:
A printed circuit board includes a plurality of layers including attachment layers and routing layers; and via patterns formed in the plurality of layers, each of the via patterns including first and second signal vias forming a differential signal pair, the first and second signal vias extending through at least the attachment layers; ground vias extending through at least the attachment layers, the ground vias including ground conductors; and shadow vias located adjacent to each of the first and second signal vias, wherein the shadow vias are free of conductive material in the attachment layers. The printed circuit board may further include slot vias extending through the attachment layers and located between via patterns.
Abstract:
A modular electrical connector with broadside coupled signal conductors in a right angle intermediate portion and edge coupled end portions. Broadside coupling provides balanced pairs for very high frequency operation, while edge coupling provides a high density interconnection system at low cost. Each module has separately shielded signal conductor pairs. The shielding is shaped to avoid or suppress undesirable propagation modes within an enclosure formed by shielding per module. Lossy material may be selectively placed within and outside the shielding per module to likewise avoid or suppress unwanted signal propagation.