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An electrical connector system includes a header and an electrical connector assembly. The header includes a leading end having a plurality of contact pins that are insertable into an electronic device and a plurality of separated stripline ground plates extending from the leading end toward a matin

An electrical connector system includes a header and an electrical connector assembly. The header includes a leading end having a plurality of contact pins that are insertable into an electronic device and a plurality of separated stripline ground plates extending from the leading end toward a mating end of the header. The electrical connector assembly is coupleable with the mating end of the header and includes a plurality of electrical connectors secured in a stacked configuration. Each electrical connector includes a planar insulative connector body and a plurality of electrical cable terminations for mating with a corresponding plurality of contact pins of the header. At least two electrical cable terminations make electrical contact with a common stripline ground plate when the header and the electrical connector assembly are in a mated configuration.

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1. An electrical connector system comprising: a header comprising a leading end having a plurality of contact pins that are insertable into an electronic device and a plurality of separated stripline ground plates extending from the leading end toward a mating end of the header; andan electrical con

1. An electrical connector system comprising: a header comprising a leading end having a plurality of contact pins that are insertable into an electronic device and a plurality of separated stripline ground plates extending from the leading end toward a mating end of the header; andan electrical connector assembly coupleable with the mating end of the header, the electrical connector assembly comprising a plurality of electrical connectors secured in a stacked configuration, each electrical connector including: a plurality of electrical cable terminations for mating with a corresponding plurality of contact pins of the header, each electrical cable termination comprising: a tubular housing of electrically conductive material having inner walls defining an opening and first and second opposed open ends;an inner housing of electrically insulating material inserted into the tubular housing from at least one of the open ends thereof, the inner housing comprising at least one inner space configured to receive an electrical contact in a fixed relative position; andat least one electrical contact positioned in the inner housing and configured to be connected to an electrical cable; anda planar insulative connector body having an upper surface and an opposing lower surface, the upper and lower surfaces defined by a front edge, a back edge, and two longitudinal side edges, the upper surface including a plurality of longitudinal channels, each channel containing one of the plurality of electrical cable terminations, the front edge of the connector body having a plurality of openings for guiding the contact pins into the mating electrical cable terminations positioned within the channels,wherein at least two electrical cable terminations make electrical contact with a common stripline ground plate when the header and the electrical connector assembly are in a mated configuration. 2. The electrical connector system of claim 1, wherein at least one electrical cable termination further comprises at least one external ground contact extending from the tubular housing and configured to compliantly contact a stripline ground plate. 3. The electrical connector system of claim 1, wherein at least one electrical cable termination is electrically isolated from a common stripline ground plate when the header and the electrical connector assembly are in a mated configuration. 4. The electrical connector system of claim 1, wherein the tubular housing of at least one electrical cable termination commonly grounds adjacent stripline ground plates when the header and the electrical connector assembly are in a mated configuration. 5. The electrical connector system of claim 1, wherein the tubular housing of each electrical cable termination fully shields a corresponding contact pin when the header and the electrical connector assembly are in a mated configuration. 6. The electrical connector system of claim 1, wherein each electrical cable termination comprises a coaxial cable termination comprising a signal contact positioned in the inner housing and configured to be connected to a coaxial cable, and wherein when the header and the electrical connector assembly are in a mated configuration, the signal contact makes electrical contact with a corresponding contact pin and the tubular housing fully shields the signal contact and corresponding contact pin and commonly grounds adjacent stripline ground plates. 7. The electrical connector system of claim 1, wherein each electrical cable termination comprises a twinaxial cable termination comprising two signal contacts positioned in the inner housing and configured to be connected to a twinaxial cable, and wherein when the header and the electrical connector assembly are in a mated configuration, the two signal contacts make electrical contact with corresponding contact pins and the tubular housing fully shields the two signal contacts and corresponding contact pins and commonly grounds adjacent stripline ground plates. 8. The electrical connector system of claim 1, wherein each connector body includes an integrally formed engagement surface on at least one of its longitudinal edges, and wherein the electrical connector assembly includes a retention rod configured to securely engage each engagement surface such that the plurality of electrical connectors are secured in a stacked configuration. 9. The electrical connector system of claim 1, wherein each connector body includes at least one set of integrally formed retention elements configured to retain adjacent electrical connectors in a fixed relative position. 10. The electrical connector system of claim 1, wherein each electrical cable termination is individually removable from the connector body.