Electric Connector Mounting Structure for Impedance Matching
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Solution Overview
Problem
Existing electric connector sets lack an impedance adjustment function to match characteristic impedance for high-frequency signal transmission between circuit boards, leading to transmission loss due to impedance mismatch.
Innovation Solution
The electric connector set includes a configuration where the first and second connectors' mounting portions oppose and overlap each other in the insertion-withdrawal direction, generating electrostatic capacity that acts as a capacitor to adjust characteristic impedance, thereby incorporating an impedance adjustment function.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If mounting portions are arranged in opposite directions to avoid electrostatic capacity, then electrostatic interference is reduced, but impedance adjustment function is lost
Solution Approach 1:
The patent applies local quality by differentiating the arrangement of mounting portions based on their function: signal transmission mounting portions are arranged in opposite directions to minimize electrostatic interference, while impedance adjustment mounting portions are arranged to overlap and generate electrostatic capacity for impedance matching. This localized functional differentiation resolves the contradiction between avoiding electrostatic interference and providing impedance adjustment capability.
Solution Approach 2:
The connector is segmented into multiple mounting portions with different functional characteristics. Some mounting portions are designed for signal transmission with opposite-direction arrangement, while others are designed for impedance adjustment with overlapping arrangement. This segmentation allows each portion to optimize its specific function without compromising the other, resolving the contradiction between electrostatic interference reduction and impedance adjustment capability.
2Reliability
If impedance matching circuit is added to circuit board, then characteristic impedance can be adjusted, but device complexity increases
Solution Approach 1:
The patent merges the impedance adjustment function directly into the connector structure by utilizing the mounting portions as both mechanical connection elements and impedance adjustment elements. The overlapping arrangement of mounting portions generates electrostatic capacity that provides impedance matching, eliminating the need for separate impedance matching circuits on the circuit board. This integration reduces device complexity while maintaining reliable impedance matching.
Solution Approach 2:
The mounting portions serve dual functions: they provide mechanical mounting and electrical connection while simultaneously providing impedance adjustment through their overlapping arrangement. The connector structure itself generates the necessary electrostatic capacity for impedance matching, making the system self-sufficient and eliminating the need for additional external impedance matching components.
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 configuration effectively reduces transmission loss by matching impedance, ensuring efficient high-frequency signal transmission between circuit boards.
Implementation Method 1
the first mounting portion opposes the second mounting portion and overlaps the second mounting portion as viewed in the insertion-withdrawal direction. Electrostatic capacity is thereby generated between the first mounting portion and the second mounting portion
Data Source
AI summary
An electric connector set having an impedance adjustment function and a mounting structure, and including a first connector that mounts onto a first circuit board, and a second connector that mounts onto a second circuit to be insertable into and withdrawable from the first connector in an insertion-withdrawal direction. The first connector includes a first connection terminal having first mounting portions to mount onto first land portions on the first circuit board and a first insulating member that holds the first connection terminal. The second connector includes a second connection terminal having second mounting portions to mount onto second land portions on the second circuit board and a second insulating member that holds the second connection terminal. In an engagement state of the electric connector set, the first mounting portions oppose the second mounting portions and overlap the second mounting portions as viewed in the insertion-withdrawal direction.