Communication Connector Shielding for Impedance Control
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Solution Overview
Problem
Existing communication connectors experience reduced communication quality due to impedance changes at points where the shield layer and insulation coating are stripped, leading to signal reflection and noise interference.
Innovation Solution
A communication connector design where the end parts of wires are exposed and covered with a conductive second shield member, which is electrically connected to a first shield member, reducing impedance changes and noise interference by ensuring continuous shielding and easy connection to terminals.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the insulation coating is stripped at the end parts of the wires to enable connection to terminals, then the wires can be easily connected to terminals, but impedance changes occur and communication quality is reduced
Solution Approach 1:
A conductive shield member is introduced as an intermediary between the exposed wire end and the insulation coating. This shield member maintains continuous shielding coverage at the wire end portion where the insulation coating is stripped, preventing impedance changes and noise interference while allowing the wire to be connected to the terminal. The shield member acts as a mediator that preserves signal integrity during the connection process.
2Ease of manufacture
If the shield layer and insulation coating are stripped at the wire ends, then connection to terminals is enabled, but signal reflection occurs due to impedance changes
Solution Approach 1:
The conductive shield member serves as an intermediary structure that bridges the gap between the stripped wire end and the main shield layer. By wrapping around the exposed wire portion and connecting to both the wire and the insulation coating, it maintains impedance continuity and prevents signal reflection that would otherwise occur at the discontinuity point.
Solution Approach 2:
The shield member is configured as a flexible conductive structure that can wrap around the wire end portion. This flexible shield film maintains close contact with the wire surface, ensuring continuous shielding coverage and preventing electromagnetic interference while allowing for easy wire insertion and terminal connection.
3Reliability
If the end parts of wires are covered with insulation coating, then shielding is continuous, but wires cannot be easily bent and connected to terminals
Solution Approach 1:
The wire structure is segmented into two distinct portions: a covered portion with insulation coating for maintaining shielding continuity, and an exposed portion at the end where the insulation coating is stripped to enable bending and terminal connection. This segmentation allows each portion to fulfill its specific function without compromising the overall system performance.
Solution Approach 2:
The conductive shield member is applied selectively to the exposed wire end portion, creating an intermediary shielding layer that extends the shielding coverage to the previously exposed region. This allows the wire to be bent and connected at the terminal while maintaining shielding continuity through the shield member's coverage of the exposed portion.
Data Source
AI summary
A communication connector includes a wires (11, 12, 13, 14) for transmitting communication signals, terminals (20) to be connected to the respective wires (11, 12, 13, 14), a housing (30) for accommodating the terminals (20) and an insulation coating (15) for collectively covering the wires (11, 12, 13, 14). An end part of each wire (11, 12, 13, 14) on the side of the terminal (20) is exposed and not covered with the insulation coating (15). A conductive first shield member (61) is interposed between two adjacent wires (11A, 11B) and the insulation coating (15), and a conductive second shield member (62) surrounds exposed parts (19A, 19B) of the wires (11A, 11B). The first and second shield members (61, 62) are connected electrically.