Electrical Interposer with Asymmetric Conductor Lengths for Phase Compensation
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
High-frequency signal transmission in large computer systems is limited by phase differences and changing characteristic impedance in angle connectors, which affect bandwidth and bit rate due to varying conductor lengths.
Innovation Solution
An electrical interface with distinct geometric lengths for first and second electrical connections, arranged in a star quad configuration, compensates for runtime and phase differences by interposing between an angle connector and a printed circuit board, ensuring identical lengths for all connections and maintaining impedance control.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If conductors are laid in a wavelike manner to achieve identical geometric length, then phase differences are avoided, but characteristic impedance becomes inconsistent due to changing distance between conductors
Solution Approach 1:
The patent applies local quality by making each conductor pair have different geometric lengths (first conductor: length L1, second conductor: length L2) to compensate for local phase differences caused by the angle connector geometry. This localized adjustment maintains consistent characteristic impedance while accounting for position-dependent path length variations.
Solution Approach 2:
The patent changes the geometric length parameter of conductors differently for each conductor pair based on their position in the angle connector. By adjusting conductor lengths as a variable parameter rather than keeping them uniform, the invention compensates for phase differences while maintaining impedance consistency.
2Productivity
If conductors are arranged on shortest paths between connection planes, then geometric length is minimized, but phase differences occur due to different path lengths
Solution Approach 1:
The patent applies local quality by making each conductor pair have different geometric lengths (first conductor: length L1, second conductor: length L2) to compensate for local phase differences caused by the angle connector geometry. This localized adjustment maintains consistent characteristic impedance while accounting for position-dependent path length variations.
Solution Approach 2:
The patent intentionally introduces asymmetry by designing different geometric lengths for different conductor pairs based on their specific positions in the angle connector. This asymmetric design compensates for the inherent asymmetry in signal path lengths through the angled connection, achieving phase alignment without requiring all conductors to follow identical geometric patterns.
3Ease of operation
If angle connectors are used to connect processor boards to backplane, then mechanical plug-in connection is achieved, but high-frequency signal transmission properties deteriorate due to impedance variations
Solution Approach 1:
The patent applies local quality by making each conductor pair have different geometric lengths (first conductor: length L1, second conductor: length L2) to compensate for local phase differences caused by the angle connector geometry. This localized adjustment maintains consistent characteristic impedance while accounting for position-dependent path length variations.
Solution Approach 2:
The patent changes the geometric length parameter of conductors differently for each conductor pair based on their position in the angle connector. By adjusting conductor lengths as a variable parameter rather than keeping them uniform, the invention compensates for phase differences while maintaining impedance consistency.
Data Source
AI summary
The invention relates to an electric interface, in particular an interposer, having a first connection plane with at least one first contact surface pair, each of which has a first and second contact surface, and a second connection plane with at least one second contact surface pair, each of which has a third and a fourth contact surface. For each of a first and second contact surface pair, a first electric connection electrically connects the first contact surface of the first connection plane to the third contact surface of the second connection plane, and a second electric connection electrically connects the second contact surface of the first connection plane to the fourth contact surface of the second connection plane. The first electric connection between the first and third contact surface has a specified first geometric length, and the second electric connection between the second and fourth contact surface has a specified second geometric length, the first and second geometric length being different.