Blind-Mate Connector Assembly With Local EM Absorption for Crosstalk
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Solution Overview
Problem
Traditional connectors face challenges in managing high-frequency, high-density applications, particularly in reducing crosstalk of differential signals while maintaining signal integrity and avoiding increased weight and material usage.
Innovation Solution
The solution involves strategically disposing wave-absorbing materials in high-frequency radiation areas generated during connector use, thereby selectively absorbing crosstalk signals without affecting normal signals, and eliminating the need for extensive shielding materials.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If traditional shielding materials and grounding materials are used to solve crosstalk, then crosstalk is reduced, but connector weight increases and plugging force becomes large
Solution Approach 1:
The wave-absorbing material is selectively applied only in the high-frequency radiation area near the trumpet-shaped guide head, rather than uniformly across the entire connector. This localized approach targets the specific region where crosstalk occurs most intensely, reducing the overall amount of shielding material required and thereby decreasing connector weight while maintaining effective crosstalk suppression.
Solution Approach 2:
The connector structure is divided into distinct functional zones: the high-frequency radiation area requiring wave-absorbing material and other areas that do not require such material. This segmentation allows for optimized material distribution, placing shielding only where necessary to address crosstalk without unnecessarily increasing overall connector weight.
2Object-affected harmful factors
If wave-absorbing material is used to eliminate crosstalk, then crosstalk is absorbed, but normally transmitted electrical signals are also absorbed, destroying signal integrity
Solution Approach 1:
The wave-absorbing material is positioned specifically in the high-frequency radiation area where crosstalk is generated, rather than throughout the entire signal path. This localized placement ensures that only the harmful crosstalk radiation is absorbed while the main differential signals traveling through the terminal bodies remain unaffected, preserving signal integrity.
Solution Approach 2:
The wave-absorbing material converts the harmful high-frequency radiation and crosstalk into beneficial absorption, selectively eliminating only the unwanted electromagnetic interference while allowing normal signal transmission to proceed unaffected. The material acts as a selective filter that transforms harmful radiation into absorbed energy without interfering with legitimate signals.
3Object-affected harmful factors
If traditional shielding methods are used, then crosstalk is reduced, but differential density cannot be further increased
Solution Approach 1:
By concentrating wave-absorbing material only in the high-frequency radiation area, the design achieves effective crosstalk suppression with minimal material intervention. This creates additional spatial capacity within the connector structure, allowing for increased differential pair density without the need for extensive shielding that would occupy valuable space.
Solution Approach 2:
The selective placement of wave-absorbing material in specific high-frequency radiation zones creates unused spatial regions that can be utilized for additional differential pairs. This segmented approach to shielding maximizes the use of available space, enabling higher differential density compared to traditional comprehensive shielding methods.
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 approach effectively ensures signal integrity, reduces connector weight and material usage, and enhances differential signal density, meeting the demands of high-speed and high-density connectors.
Implementation Method 1
the wave-absorbing material absorbs electromagnetic waves non-selectively, and while absorbing the crosstalk electromagnetic waves of the differential signals by entirely cladding the connector
Data Source
AI summary
The present application provides a female connector, a male connector and a connector assembly. The female connector includes: a plurality of female terminals, ends of which are radially expanded outward to form trumpet-shaped guide heads for blind mating with a male connector or a gold finger circuit board; a cantilever section of the female terminal being bent at at least one position to form an elastic pressing portion for an interference fit contact with the male connector or the gold finger circuit board; a first high-frequency radiation area being formed in the vicinity of the trumpet-shaped guide head when the female terminals are mated with the male connector or the gold finger circuit board; and a first wave-absorbing material is disposed in a spatial scope covered by the first high-frequency radiation area. By selectively disposing a wave-absorbing material in an area where a high-frequency radiation is easily generated during the use of the connector, crosstalk signals are absorbed, while normally transmitted electrical signals are kept, and an overall weight of the connector is light.