High-Frequency Electrical Connector Spring Arm Impedance Reduction
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Solution Overview
Problem
Electrical connectors used with CPUs experience high impedance and resonance issues during high-frequency signal transmission due to the mechanical contact force requirements in limited spaces, which are not adequately addressed by existing designs.
Innovation Solution
The electrical connector features an insulative housing with passageways and contacts that include a spring arm with an additional compressive folded layer structure, which reinforces mechanical strength and reduces impedance by abutting against the spring arm, thereby minimizing resonance during high-frequency transmission.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Force
If a cantilever arm is used to ensure mechanical contact force in limited space, then mechanical contact force is improved, but impedance increases during high frequency transmission
Solution Approach 1:
The patent changes the structural parameters of the contact by adding a support plate and modifying the cantilever arm configuration. The support plate provides additional mechanical support while the modified cantilever arm structure reduces impedance by distributing stress and improving signal transmission characteristics, thereby resolving the contradiction between mechanical contact force and impedance.
2Force
If a cantilever arm is used to ensure mechanical contact force in limited space, then mechanical contact force is improved, but resonance occurs during high frequency transmission
Solution Approach 1:
The support plate acts as an intermediary element between the cantilever arm and the substrate. It provides additional mechanical support to reduce resonance in the cantilever arm while maintaining the necessary mechanical contact force, thus resolving the contradiction between force and resonance.
3Volume of moving object
If space is limited for CPU connection, then compact design is improved, but mechanical contact force becomes difficult to maintain
Solution Approach 1:
The patent introduces a support plate dimension that extends from the substrate, creating a multi-dimensional structure. This allows the connector to maintain compact footprint while providing additional mechanical support through the vertical dimension, resolving the contradiction between compact design and mechanical contact force.
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 effectively maintains mechanical contact force while lowering impedance and resonance, ensuring reliable high-frequency signal transmission in CPU-to-printed circuit board connections.
Implementation Method 1
The spring arm forms a contacting section around a free end thereof. One additional layer structure extends backwardly from a front end of the spring arm in a compressive folded manner and intimately abuts against the spring arm in the vertical direction.
Data Source
AI summary
An electrical connector includes an insulative housing with a plurality of passageways and a plurality of contacts received therein. The housing includes opposite mating surface and mounting surface in the vertical direction. The contact includes an upstanding section retained in the passageway with a spring arm extending from an upper region of the upstanding plate and above the mating surface, and a mounting leg extending from a lower region of the upstanding plate around the mounting surface. The spring arm forms a contacting section around a free end thereof. One additional layer structure extends backwardly from a front end of the spring arm in a compressive folded manner and intimately abuts against the spring arm in the vertical direction.