High-Speed Socket Shielding for Crosstalk Reduction
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Solution Overview
Problem
Existing sockets for high-speed differential transmission, such as those used in LGA packages, fail to adequately prevent crosstalk, particularly at transmission rates reaching 112 Gbps.
Innovation Solution
A socket design featuring a housing with a matrix of penetration holes, supported by insulating members and conductive resin members, where contacts for high-speed differential transmission are arranged in a specific pattern to minimize crosstalk, with conductive resin members surrounding contacts for ground to enhance shielding.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If contacts for high-speed differential transmission are arranged in a matrix pattern with contacts for ground, then the transmission rate can reach high speeds (112 Gbps), but crosstalk occurs between adjacent contacts
Solution Approach 1:
Conductive resin members are inserted into hollow portions of insulating members that are positioned between adjacent contacts for high-speed differential transmission. These conductive resin members act as intermediate shielding elements that block electromagnetic interference between the differential signal contacts, preventing crosstalk while maintaining high-speed transmission capability of 112 Gbps
Solution Approach 2:
The socket structure implements localized shielding by placing conductive resin members only in specific positions between differential signal contacts, rather than providing uniform shielding throughout the entire contact array. This targeted approach reduces crosstalk at critical interfaces while maintaining signal integrity for high-speed transmission
2Object-affected harmful factors
If contacts for ground are arranged to surround pairs of contacts for high-speed differential transmission, then shielding performance is improved, but device complexity increases
Solution Approach 1:
The socket integrates multiple functions into unified structures: insulating members simultaneously provide electrical isolation and structural support, while conductive resin members embedded within these insulating members provide both shielding and grounding functions. This merging reduces the number of separate components needed to achieve surrounding ground contact arrangement, simplifying the overall device structure while maintaining shielding performance
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
Effectively prevents crosstalk in high-speed differential transmission by arranging contacts in a manner that reduces interference, ensuring reliable data transmission at high speeds.
Implementation Method 1
The plurality of conductive resin members are fitted at positions of the plurality of insulating members in contact with the contacts for ground... the contacts for ground are separately arranged at adjacent positions in the row direction and adjacent positions in the column direction in each of the respective pairs of contacts for high-speed differential transmission to surround the pairs
Data Source
AI summary
A socket having a housing, a plurality of contacts, a plurality of insulating members and a plurality of conductive resin members is described. The housing is in a box shape with an opening and is provided with a matrix of penetration holes at a bottom portion. The plurality of contacts include contacts for ground and respective pairs of contacts for high-speed differential transmission. The plurality of insulating members support the plurality of contacts and are pressed into the housing so that the contacts are exposed on an opposite side of the opening from the penetration holes of the housing. The plurality of conductive resin members are fitted at positions of the plurality of insulating members in contact with the contacts for ground.