Connector Terminal Segmentation for Impedance Matching
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Solution Overview
Problem
The existing connectors with signal and ground terminals arranged side by side suffer from impedance matching deterioration due to the thinner tip sides of the terminals, leading to increased impedance at the tip ends compared to the base ends.
Innovation Solution
A connector design featuring signal and ground terminals with first and second extending portions, where the first extending portion is narrower than the second, and the housing is split into separate sections to allow for flexible wall design and different materials for improved impedance matching, along with elastic contact portions to maintain pressure and reduce elastic force.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Force
If the tip side of the terminal is formed thinner than the base side to reduce elastic force and maintain contact pressure, then the contact pressure is maintained, but the impedance matching is deteriorated due to increased distance between signal and ground terminals at the tip
Solution Approach 1:
The housing is divided into a first housing and a second housing that are formed separately and then coupled together. The first housing contains the first extending portions of the terminals, while the second housing contains the second extending portions. This segmentation allows independent design and optimization of each housing section, enabling the first housing to include a wall portion that maintains proper spacing between terminals at the tip side, thus preserving impedance matching while allowing the terminals to be thinner at the tip.
Solution Approach 2:
The first housing includes a wall portion located between the first extending portion of the signal terminal and the first extending portion of the ground terminal. This local structural feature maintains the distance between the tip sides of the terminals, ensuring proper impedance matching in the critical contact region while allowing the terminals to have reduced thickness at the tip for lower elastic force.
2Reliability
If the tip side of the terminal is formed thinner than the base side, then the contact pressure between the conductor and terminal tip is maintained, but the impedance on the tip sides becomes larger than impedance on the base sides
Solution Approach 1:
By separating the housing into two distinct sections (first housing and second housing), the design allows the first housing to incorporate a wall portion that compensates for the spacing increase caused by terminal thinning. This segmentation enables the maintenance of consistent impedance characteristics along the terminal length despite the variable thickness design.
3Manufacturing precision
If the first housing and second housing are formed separately, then the wall portion design becomes more flexible for suppressing impedance matching deterioration, but the device complexity increases
Solution Approach 1:
The housing is segmented into a first housing and a second housing that are formed separately and then coupled together via coupling portions. This segmentation provides design flexibility for the first housing to include a wall portion that maintains proper terminal spacing for impedance matching, while the separate formation of the two housings allows for optimized manufacturing processes and assembly.
Solution Approach 2:
The first housing and second housing are coupled together to form an integrated connector structure. The coupling portions join the two separately-formed housings, combining their individual benefits: the first housing provides impedance matching control through its wall portion, while the second housing contains the base portions of the terminals. This merging achieves the desired impedance characteristics without requiring a completely integrated complex housing design.
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 design effectively suppresses impedance matching deterioration by allowing for flexible wall formation and material differentiation, maintaining contact pressure while reducing elastic force and enhancing holding strength of the terminals.
Implementation Method 1
Each of the signal terminal and the ground terminal includes a first extending portion extending toward a tip end thereof, and a second extending portion extending in a direction opposite to the first extending portion. The first extending portion of at least one of the signal terminal and the ground terminal is formed to have a width smaller than a width of the second extending portion of the at least one of the signal terminal and the ground terminal.
Data Source
AI summary
Each of the signal terminal and the ground terminal includes a first extending portion extending toward its tip end, and a second extending portion extending in a direction opposite to the first extending portion. The first extending portion is formed such that a width thereof is smaller than a width of the second extending portion. The housing includes a first housing into which the first extending portions are inserted, and a second housing into which the second extending portions are inserted. The second housing is formed separately from the first housing, and the first housing includes a wall portion located between the first extending portion of the signal terminal and the first extending portion of the ground terminal.