A through connector device is disclosed. The device may include a coaxial cable receiver portion defined by one or more surfaces, the coaxial cable receiver portion configured to couple to a center conductor portion of a coaxial cable, the center conductor portion of the coaxial cable protruding above a dielectric material of the coaxial cable. The device may include a beam lead positioned adjacent to the coaxial cable receiver portion. The device may include a planar transmission line contact pad configured to make electrical contact with a planar transmission line of a printed circuit board. The device may include a step configured to electrically and mechanically couple the beam lead to the planar transmission line contact pad, the step configured to create a gap between a bottom surface of the beam lead and a top surface of an outer conductor portion of the coaxial cable.

In some embodiments, an apparatus can include a printed circuit board (PCB) that has layers and includes a first portion and a second portion. The first portion can have a data port and a power port. A first layer is associated with data of the first portion of the PCB, and a second layer is associated with power of the first portion of the PCB. The second portion can have a data port and a power port. A third layer is associated with data of the second portion, and a fourth layer is associated with power of the second portion. The first portion or the second portion can have vias defining an electromagnetic interference (EMI) shield. The apparatus can include a power filter and a data filter that can, respectively, isolate power and data of the first portion from the second portion.

A method for manufacturing a flexible circuit board capable of transmitting high frequency signals with reduced attenuation includes providing an inner wiring board including a first conductive wiring layer and a first substrate layer, the first conductive wiring layer including a signal line and two ground lines on both sides of the signal line, the first substrate layer covering a side of the first conductive wiring layer and defining first through holes which expose the signal line; providing two copper clad laminates including a second substrate layer and a copper foil, the second substrate layer having second through hole aligned with the first through holes; laminating the two copper clad laminates onto two sides of the inner wiring board via two adhesive layers, each adhesive layer defining third through holes aligned with the first and second through holes; and forming a second conductive wiring layer from the copper foil.

A circuit board includes a multilayer body including a main surface, a mounted conductor, and a signal conductor at an intermediate position in the lamination direction of the multilayer body, and a ground conductor on the main surface. The multilayer body includes a connection portion including a portion overlapping the mounted conductor and overlapping an external board joined via a conductive joint material through use of the mounted conductor, and a circuit portion. A first region, which is the region of a circuit portion of the ground conductor, includes opening holes and a second region, which is the region of a connection portion of the ground conductor, includes opening holes. The ratio of the opening area of the opening holes to that of the second region is larger than the ratio of the opening area of the opening holes to that of the first region.

A wiring substrate is a wiring substrate including a plurality of differential pairs. Each of the differential pairs includes a first signal conductor, a first connection portion connected to the first signal conductor via a first via, a second signal conductor, and a second connection portion connected to the second signal conductor via a second via. The first signal conductor and the second signal conductor are arranged on different planes parallel to a bottom surface of the wiring substrate and overlap in a vertical direction. The first connection portion and the second connection portion are arranged on a top surface of the wiring substrate at a predetermined interval in a signal transmission direction. Adjacent differential pairs among the plurality of differential pairs are arranged at a predetermined interval in the signal transmission direction and at a predetermined interval in a direction perpendicular to the signal transmission direction.

A circuit board device includes a multilayer structure, a main ground area and a circuit module. The multilayer structure includes a plurality of plates. The main ground area is arranged in the multilayer structure. The circuit module includes a differential signal circuit and a surrounding circuit module. The differential signal circuit is located in the multilayer structure, and includes a positive signal pad and a negative signal pad. The positive signal pad is located on a configuration surface of one of the plates. The negative signal pad is located on the disposition surface, and is separated from the positive signal pad. The surrounding circuit module is located on the disposition surface, and electrically connected to the main ground area. The surrounding circuit module surrounds the positive signal pad and the negative signal pad in an enclosing way, and is physically separated from the differential signal circuit.

The present application provides a female connector and a connector assembly. The female connector is used to connect to a PCB board internally provided with a signal layer and a drilling hole penetrating the signal layer, the female connector including: a female terminal having two ends, one end being a connecting end for mating with a male connector or a gold finger circuit board, and the other end forming a crimping pin to be inserted into a drilling hole and connected with the signal layer; a high-frequency radiation area being formed in the vicinity of a connection between the crimping pin and the drilling hole when the connecting end is mated with the male connector or the gold finger circuit board; and a wave-absorbing material is disposed in a spatial scope covered by the high-frequency radiation area. By selectively disposing a wave-absorbing material in an area where a high-frequency radiation is easily generated during the use of the connector, crosstalk signals are absorbed, while normally transmitted electrical signals are kept, and an overall weight of the connector is light.

An circuit board assembly includes a first circuit board, a second circuit board stacked with the first circuit board, and a connection plate connected between the first circuit board and the second circuit board. The connection plate includes a signal transmission part and at least one ground part at a spacing to the signal transmission part. The ground part can be used as a reference ground for a signal transmitted by the signal transmission part, so that the characteristic impedance of the signal transmission part is controllable, and the signal transmitted by the signal transmission part has strong continuity, thereby maintaining good matching performance and reducing an insertion loss caused by characteristic impedance mismatch.

A quantum computer includes a refrigeration system under vacuum including a containment vessel, a qubit chip contained within a refrigerated vacuum environment defined by the containment vessel. The quantum computer further includes a plurality of interior electromagnetic waveguides and a plurality of exterior electromagnetic waveguides. The quantum computer further includes a hermetic connector assembly operatively connecting the interior electromagnetic waveguides to the exterior electromagnetic waveguides while maintaining the refrigerated vacuum environment. The hermetic connector assembly includes an exterior multi-waveguide connector, an interior multi-waveguide connector, and a dielectric plate arranged between and hermetically sealed with the exterior multi-waveguide connector and the interior multi-waveguide connector. The dielectric plate permits electromagnetic energy when carried by the interior and exterior pluralities of electromagnetic waveguides to pass therethrough.

A circuit structure includes a circuit board, microstrips, a stripline, and vias. The circuit board includes conductive levels. A first and second transceiving circuits are disposed on a first conductive level. A first microstrip is disposed on the first conductive level, and configured to couple a first pin of the first transceiving circuit to a second pin of the second transceiving circuit. A second and third microstrips are disposed on the first conductive level, and coupled to a third pin of the first transceiving circuit and a fourth pin of the second transceiving circuit, respectively. The stripline is disposed on a second conductive level. A first and second vias cross the first and second levels, and couple the second and third microstrips to the stripline. The first and third pins are an inner and outer pins of a front line of a BGA of the first transceiving circuit, respectively.