USB Type-C Plug Shielding Case for Crosstalk Reduction
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Solution Overview
Problem
USB Type-C connectors face challenges with increased signal frequency and compact terminal arrangements, leading to crosstalk and reduced signal-to-noise ratio, as well as vulnerability to damage from excessive pressure, which affects the reliability and stability of high-frequency signal transmissions.
Innovation Solution
An electrical connector plug design featuring a metal conductive plate with impedance drop segments and a shielding case to reduce transmission impedance and prevent damage, incorporating resilient conductive terminals and a protection segment to mitigate pressure-induced issues and electromagnetic interference.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the transmission frequency of high frequency signals is elevated to meet increasing signal transmission volumes, then the signal transmission capacity is improved, but the crosstalk among neighboring terminals increases and the signal-to-noise ratio decreases
Solution Approach 1:
A shielding case is introduced as an intermediary structure between neighboring high frequency signal terminals. The shielding case, made of electrically conductive material, acts as a mediator that blocks electromagnetic field interference between adjacent terminals, thereby reducing crosstalk and maintaining signal-to-noise ratio even at elevated transmission frequencies
Solution Approach 2:
The shielding case is selectively positioned only around high frequency signal terminals that are susceptible to crosstalk, rather than uniformly shielding all terminals. This localized shielding approach addresses the specific problem of crosstalk in high frequency signal transmission while minimizing impact on other terminal functions and maintaining compact connector design
2Device complexity
If the intervals between signal transmission terminals are shortened to increase terminal density in compact connectors, then the connector compactness is improved, but the crosstalk among neighboring terminals becomes more significant
Solution Approach 1:
The shielding case serves as a physical intermediary barrier inserted between closely spaced signal terminals. Even though terminals are positioned at short intervals to achieve compactness, the shielding case creates an electromagnetic isolation zone that prevents harmful near-field coupling between adjacent terminals
Solution Approach 2:
Instead of increasing the physical distance between terminals in the horizontal plane (which would reduce compactness), the solution adds a vertical dimension by introducing the shielding case as a separate structural element that provides electromagnetic isolation without occupying lateral space, thereby maintaining compact connector footprint
3Adaptability or versatility
If the USB socket is built inside the 3C product to provide integrated functionality, then the device integration is improved, but the ease of repair deteriorates as users find it difficult to replace or fix damaged sockets
Solution Approach 1:
The connector assembly is segmented into modular components: the insulation body, conductive terminals, and shielding case can be separately manufactured and assembled. This segmentation allows the entire connector assembly to be replaced as a single module, bridging the gap between integrated design and ease of repair by enabling simple module replacement without complex socket-level repairs
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 enhances the signal-to-noise ratio and structural durability of USB Type-C connectors by reducing transmission impedance and shielding against electromagnetic interference, improving the reliability and stability of high-frequency signal transmissions while allowing for convenient replacement of damaged terminals.
Implementation Method 1
adds an electrical conductive structure at corresponding locations of signal transmission terminals transferring high frequency signals so as to reduce the transmission impedance of the high frequency signal terminals by means of capacitive effect
Implementation Method 2
provides a layer of protection to prevent the structure of the signal transmission terminals from being easily damaged due to excessive pressure thereupon, such that the stability and smoothness of USB Type-C connector plugs in terms of structural strength or high frequency signal transmissions can be greatly improved
Data Source
AI summary
An electrical connector plug for electrical connection to an electrical connector socket. The electrical connector plug includes: an insulation body extending in a longitudinal direction and including a base portion a mounting portion fixed to the base portion; two rows of resilient conductive terminals mounted in the insulation body and arranged symmetrically in pivotal rotation with respect to the longitudinal direction, each comprising a horizontal segment fixed on the base portion and a bended protrusion contact segment extending from the horizontal segment; an electrical conductive plate mounted on the mounting portion including a front segment and an impedance drop segment, extending from the front segment toward the base portion; and a shielding case mounted on the base portion and electrically connected to the metal housing.