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An intercoupling component for receiving an array of contacts within a digital or analog transmission system having an electrical ground circuit and chassis ground circuit, the intercoupling component may include a segment formed of electrically insulative material and having an upper and lower surf

An intercoupling component for receiving an array of contacts within a digital or analog transmission system having an electrical ground circuit and chassis ground circuit, the intercoupling component may include a segment formed of electrically insulative material and having an upper and lower surface, the segment including a plurality of holes disposed on its upper surface and arranged in a predetermined footprint, one or more a shield members formed of electrically conductive material disposed within the segment and configured to connect to the chassis ground circuit of the system and a frame formed of electrically conductive material and configured to connect with the chassis ground circuit of the system. The intercoupling component may include an array of electrically conductive contacts grouped to multi-contact groupings configured to transmit single-ended or differential signals. The intercoupling component may include a cavity located between signal contacts to adjust the differential impedance between signal contacts.

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1. An intercoupling component comprising: a substrate formed of a non-conductive material; andplurality of electrically conductive contacts attached to the substrate;wherein the substrate defines a plurality of cavities, each of the cavities being disposed between adjacent contacts and sized and dim

1. An intercoupling component comprising: a substrate formed of a non-conductive material; andplurality of electrically conductive contacts attached to the substrate;wherein the substrate defines a plurality of cavities, each of the cavities being disposed between adjacent contacts and sized and dimensioned to adjust a differential impedance between the adjacent contacts, andwherein the substrate is formed of a material having a first dielectric constant, the intercoupling component further comprising dielectric material disposed within the cavity and having a second dielectric constant. 2. The intercoupling component of claim 1 wherein the first dielectric constant is lower than the second dielectric constant. 3. The intercoupling component of claim 1 wherein at least some of the plurality of electrically conductive contacts are adapted to transmit single-ended signals. 4. The intercoupling component of claim 1, further comprising a plurality of ground contacts each adapted to connect to a reference ground circuit of a digital or analog transmission system. 5. The intercoupling component of claim 1 wherein the plurality of electrically conductive contacts comprises two or more pair of signal contacts, each pair of signal contacts adapted to transmit differential signals. 6. The intercoupling component of claim 5 wherein at least some of the cavities are formed between each pair of signal contacts adapted to transmit differential signals. 7. The intercoupling component of claim 5, further comprising a reference ground contact grouped with each pair of signal contacts, wherein the reference ground contact is configured to electrically connect with an electrical ground circuit of a digital or analog transmission system. 8. The intercoupling component of claim 1, further comprising a frame formed of electrically conductive material disposed at least partially around one or more signal contacts, wherein the frame is adapted to electrically connect to a chassis ground circuit of a digital or analog transmission system. 9. The intercoupling component of claim 1 further comprising: a shield member formed of electrically conductive material at least partially disposed within the substrate,wherein the shield member is configured to electrically connect with a chassis ground circuit of a digital or analog transmission system. 10. The intercoupling component of claim 9 further comprising: a frame formed of electrically conductive material located around the signal contacts and electrically connected to the chassis ground circuit. 11. A signal transmission system comprising: a printed circuit board; andan interconnection device coupled to the printed circuit board, the interconnection device comprising a substrate formed of a non-conductive material, anda plurality of electrically conductive contacts attached to the substrate,wherein the substrate defines a plurality of cavities, each of the cavities being disposed between adjacent contacts and sized and dimensioned to adjust a differential impedance between the adjacent contacts, andwherein the substrate is formed of a material having a first dielectric constant, the interconnection device further comprising dielectric material disposed within the cavity and having a second dielectric constant. 12. The signal transmission system of claim 11 wherein the first dielectric constant is lower than the second dielectric constant. 13. The signal transmission system of claim 11, further comprising air-filled glass spheres disposed within the cavities. 14. An intercoupling component comprising: a substrate formed of a non-conductive material;a plurality of groups of electrically conductive contacts attached to the substrate, each group comprising at least a pair of contacts for transmitting signals;for each group of contacts, one or more ground planes disposed near the two contacts, the one or more ground planes being sized and dimensioned selected to adjust a differential impedance between the pair of contacts; andwherein each group of contacts comprises at least a third contact that is electrically connected to an electrical ground circuit. 15. The intercoupling component of claim 14 wherein the electrically conductive contacts comprise plugs. 16. The intercoupling component of claim 14 wherein the substrate defines holes, each of the electrically conductive contacts being disposed within one of the holes. 17. An intercoupling component for use in a digital or analog transmission system having an electrical ground circuit, the intercoupling component comprising: a segment formed of an electrically insulative material;a plurality of electrically conductive contacts coupled to the segment, wherein the plurality of contacts are arranged in a plurality of multi-contact groupings, at least one multi-contact grouping comprising:a first electrically conductive contact; anda reference contact located at a distance from the first electrically conductive contact and configured to electrically connect to the electrical ground circuit of the system, and wherein the first electrically conductive contact and the reference contact form a transmission line electrically equivalent to a co-axial transmission line. 18. The intercoupling component of claim 17 wherein the reference contact is located at a distance D from the first electrically conductive contact, and each multi-contact grouping is located a distance of at least D from adjacent multi-contact groupings. 19. A system comprising: a primary circuit board having signal lines and an electrical ground circuit;a secondary circuit board having signal lines and an electrical ground circuit;an interconnection device to connect the signal lines of the primary and secondary circuit boards, the interconnection device having first electrical shielding that connects to the electrical ground circuits of the primary and secondary circuit board, and a second electrical shielding that connects to a chassis ground circuit of the system. 20. The system of claim 19 wherein the interconnection device comprises a plurality of groups of pins coupled to a plurality of groups of sockets. 21. The system of claim 20 wherein the first electrical shielding comprises a reference pin in each group of pins and a reference socket in each group of sockets, the reference pins and the reference sockets being electrically connected to the electrical ground circuit. 22. The system of claim 20 wherein the second electrical shielding comprises a first electrically conductive frame disposed around the plurality of groups of pins and a second electrically conductive frame disposed around the plurality of groups sockets, the first and second frames being configured to electrically connect with the chassis ground circuit. 23. A system comprising: a primary circuit board having a pair of signal lines that transmit differential signals;a secondary circuit board having a pair of signal lines that receive the differential signals from the primary circuit board;an interconnection device to connect the pairs of signal lines of the primary and secondary circuit boards, the interconnection device having a pair of pins and a corresponding pair of sockets, the pairs of pins being disposed on a first substrate, the pairs of sockets being disposed on a second substrate, and at least one of (i) the first substrate defining a cavity between the pair of pins to adjust a differential impedance of the pair of pins and (ii) the second substrate defining a cavity between the pair of sockets adjust a differential impedance of the pair of sockets, in order to match the differential impedance of the pairs of signal lines on the primary and secondary circuit boards. 24. The system of claim 23 wherein the cavity comprises an air-filled cavity. 25. The system of claim 23 wherein the cavity comprises a dielectric material-filled cavity. 26. A system comprising: a primary circuit board having a pair of signal lines that transmit differential signals;a secondary circuit board having a pair of signal lines that receive the differential signals from the primary circuit board;an interconnection device to connect the pairs of signal lines of the primary and secondary circuit boards, the interconnection device having a pair of pins and a corresponding pair of sockets, the pairs of pins being disposed on a first substrate, the pairs of sockets being disposed on a second substrate, and at least one of (i) one or more ground planes between the pair of pins to adjust a differential impedance of the pair of pins and (ii) one or more ground planes between the pair of sockets adjust a differential impedance of the pair of sockets, in order to match the differential impedance of the pairs of signal lines on the primary and secondary circuit boards. 27. The system of claim 26 wherein the interconnection device has a reference pin that corresponds to the pair of pins and a reference socket that corresponds to the pair of sockets, the reference pin and the reference socket being electrically connected to an electrical ground circuit. 28. The system of claim 27 wherein at least one ground plane is coupled to at least one of the reference pin and the reference socket. 29. A method for adjusting differential impedance in a digital or analog transmission system comprising: providing a substrate formed of a non-conductive material;providing a plurality of groups of signal contacts attached to the substrate;providing cavities disposed in the substrate between adjacent contacts, the cavities being sized and dimensioned to adjust a differential impedance between the adjacent contacts; andproviding a dielectric material within the cavities, the dielectric material having a dielectric constant different from that of the substrate. 30. A method for adjusting differential impedances in a digital or analog transmission system, the method comprising: providing a substrate formed of a non-conductive material;providing a plurality of groups of signal contacts attached to the substrate, each group of signal contacts comprising at least a pair of contacts for transmitting signals;for each pair of contacts, providing one or more ground planes disposed near the two contacts to adjust a differential impedance between the two contacts; andelectrically connecting the ground planes to an electrical ground circuit.