Staggered Electrical Connector Terminals Reduce Crosstalk
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Solution Overview
Problem
Conventional electrical connectors face challenges in reducing crosstalk between high-frequency signal units due to mounting tolerance issues, dust or water pollution, and metal fatigue in ground members, which affect the abutting portions' ability to effectively connect ground terminals, leading to suboptimal crosstalk improvement.
Innovation Solution
The electrical connector employs a staggered arrangement of signal and ground terminals in adjacent units, with each terminal unit comprising signal and ground terminals configured in specific modes, such as 'ground-signal-signal' or 'signal-signal-ground', to increase the average distance between signal sources and reduce crosstalk interference, eliminating the need for an additional ground member.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a ground member with abutting portions is used to short-circuit ground terminals, then the inductance of ground terminals is reduced and crosstalk is improved, but mounting tolerance, dust pollution, water pollution, and metal fatigue cause unstable abutting and contact impedance, reducing crosstalk improvement effectiveness
Solution Approach 1:
The patent merges the ground member and ground terminals into a single integral structure. The ground member is formed as one piece with the ground terminals, eliminating the need for separate abutting portions that require mounting. This integration ensures stable electrical connection without mounting tolerance issues, dust or water pollution problems, or metal fatigue concerns, thereby maintaining reliable crosstalk improvement throughout the product lifecycle.
2Reliability
If ground terminals and ground member are integrally connected to eliminate contact impedance, then connection stability is improved, but signal units and ground terminals are connected to different strips, making it difficult to guarantee stable distance and achieve desired crosstalk improvement
Solution Approach 1:
The ground member is designed as an integral structure where the ground terminals and the main body are formed as one piece. This integration ensures that the ground terminals are precisely positioned relative to the signal units, maintaining stable distances for optimal crosstalk improvement while eliminating contact impedance from separate connections.
3Ease of manufacture
If conventional ground member structure is used, then ground terminal short-circuiting is achieved, but mounting tolerance and environmental factors cause each abutting portion to not well abut the corresponding ground terminal, reducing crosstalk improvement effect
Solution Approach 1:
By forming the ground member and ground terminals as an integral structure, the patent eliminates the need for separate mounting of abutting portions. The ground terminals are directly connected to the ground member body without requiring additional fastening or alignment steps, simplifying manufacturing while ensuring consistent and reliable electrical connection throughout the product's operational life.
Data Source
AI summary
An electrical connector electrically connects a first electrical module and a second electrical module, for insertion by the first electrical module along a first direction. The electrical connector includes a first group of terminals arranged in a row along a second direction, having multiple signal terminals and multiple ground terminals and forming at least one first terminal unit and at least one second terminal unit. Each of the terminals has a contact portion, a tail portion, and a middle portion located between the contact portion and the tail portion. In the second direction, the middle portions of the first terminal unit form a first row of the middle portions, and the middle portions of the second terminal unit form a second row of the middle portions. Viewing from the second direction, the first and second rows of the middle portions are staggered, thus improving the crosstalk.