Electrical Connector Insulation Layout for Signal Skew Compensation
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Solution Overview
Problem
Existing electrical connectors suffer from skew due to differences in conductor lengths, leading to signal integrity issues such as jitter, mode conversion, and electromagnetic compatibility problems, which are not effectively addressed by existing solutions that require additional space or modify conductor geometry.
Innovation Solution
An electrical connector with insulated conductors of differing lengths, utilizing an insulating element with tailored permittivity and permeability differences to compensate for length disparities by embedding one conductor in an air pocket and the other in a higher permittivity material, such as glass fibers or ceramic, to equalize signal propagation times.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If opposite turns are introduced to compensate for skew, then signal propagation time difference is reduced, but additional space is required and the solution is limited by frequency and conductor length
Solution Approach 1:
The insulating element is configured with non-uniform permittivity distribution, having different permittivity values in different regions. Specifically, the permittivity varies along the conductor length to compensate for skew without requiring additional space or geometric modifications to the conductors themselves
Solution Approach 2:
The patent changes the electrical parameter (permittivity) of the insulating element to control signal propagation characteristics. By adjusting the permittivity distribution within the insulating element, the signal propagation times are equalized without modifying the conductor geometry or requiring additional space
2Manufacturing precision
If extra length is added to shorter conductors to equalize propagation times, then signal skew is reduced, but impedance mismatches are introduced
Solution Approach 1:
Instead of uniformly extending conductor length, the insulating element provides localized permittivity adjustment. The permittivity is varied in specific regions to compensate for length differences while maintaining the original conductor geometry and impedance characteristics
Solution Approach 2:
The patent replaces the mechanical approach of extending conductor length with an electrical field-based solution using permittivity modulation in the insulating element. This substitution allows propagation time equalization without physical conductor modification that would cause impedance issues
3Manufacturing precision
If complex three-dimensional conductor geometry is used to equalize conductor lengths, then skew is minimized, but additional space is consumed and geometrical constraints on terminals are created
Solution Approach 1:
Rather than changing the geometric parameters of the conductors, the patent changes the electrical parameters (permittivity) of the surrounding insulating element. This allows propagation time equalization while maintaining simple, planar conductor layouts that minimize space usage
Solution Approach 2:
The insulating element acts as an intermediary that mediates the signal propagation characteristics. By adjusting its permittivity distribution, it compensates for conductor length differences without requiring the conductors themselves to be modified into complex three-dimensional geometries
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The solution minimizes skew without altering conductor geometry, ensuring synchronized signal arrival times and improved electromagnetic compatibility, particularly beneficial for high-frequency data transmission.
Implementation Method 1
At least a portion of the insulating element causes a smaller permittivity and/or permeability for the first conductor and a higher permittivity and/or permeability for the second conductor
Implementation Method 2
At least a portion of the insulating element causes a smaller permittivity and/or permeability for the first conductor and a higher permittivity and/or permeability for the second conductor
Data Source
AI summary
An electrical connector includes two or more mutually electrically insulated conductors, a first conductor longer than a second conductor, and at least one insulating element arranged between the first and second conductors and/or around at least one conductor. A portion of the insulating element provides lower permittivity and/or permeability for the first conductor and higher permittivity and/or permeability for the second conductor. The permittivity and/or permeability difference between the conductors is configured to compensate for the conductor length difference so as to essentially minimize the difference in signal delay between the conductors.