Offset Contact Assembly With IDC Wire Holders
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Solution Overview
Problem
Current electrical connectors with offset contacts face difficulties in wire coupling and lack insulation displacement contacts (IDCs), limiting their ability to operate at high speeds due to unwanted electromagnetic coupling, which affects signal integrity and performance.
Innovation Solution
A contact assembly with radially offset differential pairs and integrated wire holders that utilize IDCs, allowing for efficient termination of wires and reducing electromagnetic coupling, enabling high-speed operations while maintaining signal integrity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If offset contacts are used to reduce electromagnetic coupling, then signal integrity is improved, but wire coupling difficulty increases
Solution Approach 1:
The contact structure is segmented into distinct functional zones: the termination segment with IDC blades for wire attachment, the intermediate segment for transition, and the mating segment for connection. This segmentation allows each zone to be optimized independently - the IDC portion enables easy wire termination while the offset mating portion reduces electromagnetic coupling.
Solution Approach 2:
The contact assembly acts as an intermediary element that transforms the wire configuration from parallel (required for IDCs) to offset (required for reduced crosstalk). The contact structure mediates between the wire holder configuration and the mating connector, allowing wires to be terminated in parallel while presenting offset contacts to the mating connector.
2Ease of manufacture
If IDCs are used for wire termination, then ease of wire joining is improved, but offset configuration capability is lost
Solution Approach 1:
The contact assembly introduces a dimensional transformation by rotating the wire arrangement from a parallel configuration in the wire holder plane to an offset configuration in the mating connector plane. The contact structure enables this dimensional change, allowing IDCs to be used while achieving offset contact geometry through the intermediate segment orientation.
3Speed
If M-series connectors operate above one gigabit/s, then transmission speed is improved, but electromagnetic coupling increases
Solution Approach 1:
The contact assembly employs asymmetric geometry where the mating segments of each differential pair are radially offset from the central axis at different angular positions. This asymmetric arrangement breaks the symmetry that would otherwise create balanced electromagnetic coupling, thereby reducing crosstalk and enabling higher transmission rates.
Data Source
AI summary
A contact assembly includes a contact organizer having a central axis. A plurality contacts are secured to the contact organizer. The contacts are arranged as differential pairs. The contacts have mating segments and termination segments extending from the mating segments. The mating segments extend along the central axis. The termination segments are configured to terminate to corresponding wires. The mating segments of each differential pair of contacts are radially offset from the central axis of the contact organizer. Wire holders are coupled to the contact organizer. The wire holders have openings extending therethrough and are configured to receive wires. The wire holders are configured to terminate the wires to the termination segments of the contacts when the wire holders are coupled to the contact organizer.