Compression Connector Shell Layout for Impedance Matching
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Compression type connectors experience degraded transmission characteristics due to a long distance between the terminal's second portion and the shell, leading to mismatched impedances.
Innovation Solution
The connector design includes a housing with terminals having a first and second portion, where the second upper plate of the shell is positioned close to the second portion, matching the impedances of the first, second, and held portions to improve transmission characteristics.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the second upper plate is positioned far from the second portion, then the connector structure is simpler and easier to manufacture, but the transmission characteristics are degraded due to impedance mismatch
Solution Approach 1:
The shell is divided into two separate upper plates: a first upper plate covering the first portions and a second upper plate covering the second portions. This segmentation allows the second upper plate to be positioned close to the second portion for impedance matching without affecting the overall structural simplicity, thereby resolving the contradiction between transmission characteristics and device complexity
Solution Approach 2:
The second upper plate is specifically positioned close to the second portion only where needed for impedance matching, while the first upper plate maintains a different position for the first portions. This local adjustment of plate positioning optimizes transmission characteristics in the critical area without unnecessarily complicating the entire connector structure
2Reliability
If the second upper plate is made nearer to the second portion, then transmission characteristics are improved through impedance matching, but the manufacturing precision requirements increase
Solution Approach 1:
By separating the shell into two upper plates, the positioning precision requirement is localized only to the second upper plate near the second portion, rather than requiring the entire shell to be precisely positioned. This segmentation makes the manufacturing precision requirement more manageable and focused
Solution Approach 2:
The second upper plate acts as an intermediary element that can be independently positioned and adjusted to achieve the optimal distance from the second portion for impedance matching, without requiring the entire connector assembly to meet stringent positioning tolerances
Data Source
AI summary
A connector comprises a housing, a terminal and a shell. The terminal has a held portion held by the housing, a first portion extending rearward from the held portion and a second portion extending forward from the held portion. The first portion has a connectable portion configured to be connected to a first object. The second portion has a resiliently deformable support portion and a contact portion supported by the support portion. The contact portion is pressed against a second object when the connector is fixed on the second object. The shell has a first upper plate and a second upper plate which is located below the first upper plate. The first upper plate covers the first portion of the terminal from above. The second upper plate covers the second portion of the terminal from above.