High-Frequency Connector Shield Layout for Impedance Matching
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Solution Overview
Problem
Existing connectors face challenges in supporting high-frequency signal transmission, particularly in the 5G millimeter wave band, due to issues such as resonance, impedance mismatch, and electromagnetic interference, which affect transmission quality.
Innovation Solution
A high-frequency connector assembly with a design that includes multiple connection terminal groups, first and second metal parts, and an insulating shell, where the metal parts are arranged to provide shielding and grounding, reducing contact between them to minimize signal reflection and impedance mismatch, and enhancing voltage standing wave ratio.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If metal parts are arranged to provide shielding and grounding, then electromagnetic interference resistance is improved, but signal reflection and impedance mismatch increase
Solution Approach 1:
The second metal parts are divided into multiple disconnected metal pieces instead of being a continuous structure. This segmentation reduces the surface area for signal reflection while maintaining the shielding effect against electromagnetic interference, thereby resolving the contradiction between EMI resistance and signal reflection reduction.
Solution Approach 2:
The metal pieces are strategically positioned and sized to provide localized shielding where EMI protection is most needed, rather than using continuous metal structures throughout. This allows optimal balance between EMI protection and minimizing signal reflection in different regions of the connector.
2Volume of moving object
If metal parts are placed close together to reduce space, then device compactness is improved, but impedance mismatch and signal reflection worsen
Solution Approach 1:
By segmenting the metal parts into multiple smaller disconnected pieces, the overall volume occupied by metal structures is reduced while maintaining effective shielding. The segmented structure allows better spatial arrangement that preserves impedance matching characteristics.
Solution Approach 2:
The metal pieces are arranged in specific three-dimensional configurations within the insulating shell, utilizing spatial distribution across multiple dimensions to achieve compact packaging while maintaining appropriate spacing relationships that preserve impedance characteristics.
3Object-affected harmful factors
If continuous metal structures are used for shielding, then electromagnetic interference protection is improved, but manufacturing complexity increases
Solution Approach 1:
The segmented metal pieces can be manufactured separately and then positioned within the insulating shell, simplifying the manufacturing process compared to creating complex continuous metal structures. This segmentation allows for easier fabrication, assembly, and quality control.
Solution Approach 2:
The insulating shell serves as an intermediary structure that holds and positions the metal pieces, facilitating easier assembly and manufacturing. The insulating shell acts as a framework that simplifies the integration of EMI shielding components into the overall connector 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 signal transmission efficiency and quality by reducing losses and improving impedance matching, allowing for better frequency response and reduced noise interference.
Implementation Method 1
the at least one first metal part and the plurality of second metal parts are not in contact with each other
Implementation Method 2
the metal parts are arranged to provide shielding and grounding
Implementation Method 3
the insulating shell carries the plurality of second metal parts, so that the at least one first metal part and the plurality of second metal parts are not in contact with each other
Data Source
AI summary
A high-frequency connector assembly includes a plurality of connection terminal groups, at least one first metal part, a plurality of second metal parts and an insulating shell. Each connection terminal group includes a male terminal and a female terminal, the male terminal is in contact with the female terminal to transmit signals, and the connection terminal groups are arranged along a first direction; the at least one first metal part extends along the first direction; the second metal parts are disposed between the plurality of connection terminal groups and extend along a second direction, in which each second metal part includes at least two metal pieces, and the at least two metal pieces are not connected to each other; the insulating shell carries the second metal parts, so that the at least one first metal part and the second metal parts are not in contact with each other.