Socket Contact Metal Plating for Signal Integrity
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Solution Overview
Problem
Socket connections for high-performance devices like CPUs face challenges in meeting stringent electrical specifications for insertion loss, return loss, and impedance discontinuity, especially due to the fragility of socket contacts that can be damaged during handling or assembly.
Innovation Solution
The implementation of a socket contact configuration with metal plating on specific surfaces of the socket housing and cantilever portions of the electrical contacts, along with a protective cover to prevent damage and improve electrical performance, enhances the electrical characteristics and durability of the socket contacts.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If socket contacts are made more robust to withstand handling and assembly, then durability improves, but electrical performance (insertion loss, return loss, impedance) deteriorates
Solution Approach 1:
The patent applies different material properties to different parts of the socket contact assembly. The socket housing is made from a rigid material (e.g., polymer composite or metal) to provide mechanical strength and durability, while the electrical contacts are made from a conductive material (e.g., metal alloy) optimized for electrical performance. This local differentiation allows each component to be optimized for its specific function without compromise.
Solution Approach 2:
The socket housing may utilize composite materials that combine structural integrity with electrical properties. For example, a polymer composite housing provides mechanical strength while incorporating conductive fillers or plated surfaces to maintain good electrical characteristics. This allows the housing structure to contribute to both durability and electrical performance simultaneously.
2Reliability
If metal plating is applied to improve electrical characteristics, then insertion loss and return loss reduce, but manufacturing complexity increases
Solution Approach 1:
Metal plating is applied selectively only to the surfaces that require optimal electrical performance - specifically the contact surfaces and signal transmission areas. The plating is not applied uniformly across the entire socket housing, but only where electrical characteristics are critical. This localized approach minimizes manufacturing complexity while maximizing electrical performance benefits.
Solution Approach 2:
The patent applies metal plating to the extent necessary to achieve the required electrical specifications, rather than over-plating entire surfaces. The plating thickness and coverage are optimized to provide sufficient electrical performance (reducing insertion loss and return loss) without excessive material application that would increase manufacturing complexity and cost.
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
This configuration reduces insertion loss and return loss, improves impedance profiles, and increases high-speed performance up to 32 gigabits per second, while protecting the contacts from damage and ensuring reliable connections.
Implementation Method 1
metal plating on specific surfaces of the socket housing and cantilever portions of the electrical contacts... reduces insertion loss and return loss, improves impedance profiles
Data Source
AI summary
Embodiments of the present disclosure are directed towards socket contact techniques and configurations. In one embodiment, an apparatus may include a socket substrate having a first side and a second side disposed opposite to the first side, an opening formed through the socket substrate, an electrical contact disposed in the opening and configured to route electrical signals between the first side and the second side of the socket substrate, the electrical contact having a cantilever portion that extends beyond the first side, wherein the first side and surfaces of the socket substrate in the opening are plated with a metal. Other embodiments may be described and/or claimed.