Shielded Cable Connector Assembly for Signal Integrity
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Solution Overview
Problem
Communication systems face challenges in maintaining signal integrity due to electrical stubs created by large dimensional mating tolerance in connectors, which can degrade performance, and proper shielding placement is difficult, leading to ineffective shielding.
Innovation Solution
A cable connector assembly with a contact shield providing 360° electrical shielding around signal conductors and contacts, including a base and shroud that surrounds the conductors and contacts to ensure continuous shielding from the cable to the mating ends, addressing the issue of signal integrity and shielding effectiveness.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If contacts are sized to accommodate large dimensional mating tolerance, then mating reliability is improved, but electrical stub length increases degrading signal integrity
Solution Approach 1:
The contact is divided into two distinct portions: a first portion that accommodates mating tolerance and a second portion that provides the electrical connection. This segmentation allows each portion to be optimized independently - the first portion can be longer for reliable mating while the second portion remains short to minimize electrical stub effects on signal integrity.
2Manufacturing precision
If electrical shielding is added to improve signal integrity, then signal integrity is improved, but proper locating of shielding becomes difficult and gaps may occur
Solution Approach 1:
The shielding structure is merged with the contact holder as an integrated assembly. The contact holder includes built-in shielding portions that surround the contacts, eliminating the need for separate shielding components. This integration ensures proper locating of the shielding relative to the contacts while maintaining signal integrity, and prevents gaps by making the shielding an inherent part of the contact holder structure.
Data Source
AI summary
A cable connector assembly includes a contact holder holding first and second contacts in contact channels terminated to ends of conductors of a cable. The contacts have mating ends forward of the front of the contact holder. The cable connector assembly includes a contact shield coupled to the contact holder having a base and a shroud. The base surrounds a base chamber that receives an end of the cable and the contact holder and provides electrical shielding at first and second interfaces. The shroud surrounds a shroud chamber that receives the mating ends of the first and second contacts to provide electrical shielding along the mating ends of the first and second contacts.