Shielded USB-C Connector Layout for High-Frequency Signal Stability
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Solution Overview
Problem
Conventional USB type-C connectors suffer from resonance, impedance mismatch, and signal loss issues at high frequencies, affecting the quality of high-frequency signal transmission.
Innovation Solution
The electrical connector design includes an insulation body, terminal assembly, and shielding pieces with specific arrangements and configurations to improve high-frequency stability, featuring grounding and signal terminals in rows, shielding portions, and curved contacting portions to enhance signal protection.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional type-C connector structure is used, then basic connectivity function is achieved, but high-frequency signal transmission quality deteriorates due to resonance and impedance mismatch
Solution Approach 1:
The connector is divided into distinct functional segments: signal transmission region with differential signal terminals, grounding regions with grounding terminals, and shielding regions with shielding pieces. This segmentation allows each region to be optimized independently for its specific function, reducing interference and improving high-frequency signal quality
Solution Approach 2:
Different regions of the connector are given different structural characteristics: the signal region uses differential pairing for noise immunity, the grounding region provides reference potential, and the shielding region offers electromagnetic protection. Each local area has optimized properties suited to its specific function
2Area of stationary object
If signal terminals are arranged closely for compact design, then connector size is reduced, but signal insertion losses and reflection losses increase at high frequencies
Solution Approach 1:
The connector transitions from a two-dimensional planar arrangement to a three-dimensional structure by adding shielding pieces that extend in the vertical dimension. This allows signal terminals to be positioned closely in the horizontal plane while maintaining adequate spacing and electromagnetic isolation through the vertical shielding layers
3Object-affected harmful factors
If shielding pieces are added to protect signal terminals, then electromagnetic interference is reduced, but device complexity increases
Solution Approach 1:
The shielding pieces are integrated with the insulation body as a unified structure rather than being separate components. The insulation body and shielding pieces work together to provide both electrical insulation and electromagnetic shielding functions, reducing the number of discrete parts and simplifying assembly
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 design improves high-frequency signal transmission stability by reducing resonance and impedance mismatch, thereby enhancing the quality of signal transmission.
Implementation Method 1
The first shielding portions of the two shielding pieces shield the signal terminals of the two sides of the terminal assembly
Implementation Method 2
The terminal assembly includes a plurality of grounding terminals, a plurality of signal terminals
Data Source
AI summary
An electrical connector includes an insulation body, a terminal assembly mounted in the insulation body, and two shielding pieces. The terminal assembly includes a plurality of grounding terminals, a plurality of signal terminals and two locating blocks. The plurality of the grounding terminals and the plurality of the signal terminals are mounted in the two locating blocks. The two locating blocks together with the plurality of the grounding terminals and the signal terminals are arranged in two rows. The two shielding pieces are disposed at an upper surface and a lower surface of a front end of the insulation body. Each shielding piece has a fixing piece. Two sides of a rear edge of the fixing piece extend rearward to form two first shielding portions. The first shielding portions of the two shielding pieces shield the signal terminals of two sides of the terminal assembly.