Cable Connector Dual Ground Terminals Impedance Discontinuity
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Solution Overview
Problem
Conventional cable connectors face a dilemma in designing the distance between the signal terminal and the ground terminal, as reducing this distance improves transmission stability but compromises clamping strength, while increasing it enhances durability but worsens impedance discontinuity, making it difficult to achieve both simultaneously.
Innovation Solution
A cable connector with two sets of clamping plates, where one ground terminal is adjacent to the signal terminal to minimize impedance discontinuity and the other provides additional clamping force by clamping the copper braid shield at a denser portion, ensuring secure connection without exacerbating impedance issues.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the distance between the signal terminal and the ground terminal is reduced to minimize impedance discontinuity, then transmission stability is improved, but the clamping strength is compromised
Solution Approach 1:
The ground terminal is divided into two separate ground terminals instead of one single ground terminal. This segmentation allows one ground terminal to be positioned close to the signal terminal for minimizing impedance discontinuity, while the other ground terminal can be positioned farther away to provide additional clamping force on the copper braid shield.
Solution Approach 2:
Different ground terminals are assigned different functional qualities: one ground terminal is optimized for electrical performance (positioned close to signal terminal to reduce impedance discontinuity), while the other is optimized for mechanical performance (positioned to clamp the copper braid shield at a denser portion for stronger mechanical support).
2Strength
If the distance between the signal terminal and the ground terminal is increased to enhance durability, then clamping strength is improved, but impedance discontinuity worsens
Solution Approach 1:
The ground terminal function is segmented into two separate terminals, allowing one to handle the electrical performance requirement (minimizing impedance discontinuity by being close to the signal terminal) and the other to handle the mechanical strength requirement (clamping the copper braid shield at a denser portion for stronger support).
Solution Approach 2:
Different ground terminals are assigned different functional qualities: one ground terminal is optimized for electrical performance (positioned close to signal terminal to reduce impedance discontinuity), while the other is optimized for mechanical performance (positioned to clamp the copper braid shield at a denser portion for stronger mechanical support).
Data Source
AI summary
A cable connector with two sets of clamping plates for applying a clamping force and reducing the impact of impedance discontinuity includes an insulating base, a housing, a signal terminal, and two ground terminals. The insulating base has a top portion concavely provided with a receiving space. The housing is mounted on the insulating base and has a through hole corresponding to the receiving space. The signal terminal and the ground terminals are set separately in a bottom portion of the insulating base, have top portions respectively configured for clamping a coaxial cable extending into the receiving space, and have bottom portions soldered respectively to a signal contact and a ground contact on a circuit board. One of the ground terminals is adjacent to the signal terminal to reduce the impact of impedance discontinuity. The other ground terminal applies an additional clamping force to the coaxial cable.