Spring-Biased H-MTD Connector Alignment for Impedance Stability
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Solution Overview
Problem
High-speed signal reflections and losses occur in H-MTD module connectors due to variations in differential mode impedance caused by mechanical requirements and the presence of metal, dielectric, and air elements, leading to signal distortion and amplitude loss.
Innovation Solution
A connector design with a housing and H-MTD module that includes a spring mechanism to maintain a defined axial position of electrical terminals, minimizing signal reflections by ensuring precise alignment and contact between male and female terminals, and utilizing springs that can be integrally formed or separate to apply axial forces for optimal positioning.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If mechanical requirements are met to absorb vibration between separable contact spheres, then reliability is improved, but differential mode impedance varies from 100 Ohm causing signal reflections and losses
Solution Approach 1:
A dielectric element is introduced as an intermediary component between the contact spheres to maintain consistent differential mode impedance (100 Ohm) while allowing mechanical vibration absorption. This mediator ensures that the mechanical requirements for vibration resistance do not compromise the electrical impedance matching, thereby preventing signal reflections and losses.
2Strength
If more metal is used in the interconnection channel to reduce impedance, then electrical field strength is improved, but electromagnetic waves are reflected causing signal losses
Solution Approach 1:
The impedance parameter of the interconnection channel is precisely controlled and adjusted to match the differential mode impedance of 100 Ohm. By optimizing the metal content and configuration in the channel, the solution achieves the required electrical field strength while minimizing electromagnetic wave reflections and associated signal losses.
3Ease of manufacture
If the position of electrical terminals varies, then ease of assembly is improved, but signal transfer precision deteriorates
Solution Approach 1:
The electrical terminals are pre-positioned and fixed in the H-MTD module with high precision before assembly. This preliminary action ensures that when the connector is assembled, the terminals maintain their defined relative positions, enabling precise high-speed signal transfer while still allowing ease of assembly through the modular 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
The solution effectively minimizes signal reflections and losses by maintaining a consistent differential mode impedance, ensuring high-speed signal transfer with reduced signal distortion and amplitude loss, while also simplifying manufacturing and reducing costs through efficient spring design.
Implementation Method 1
at least one spring is provided that biases the H-MTD module in the axial direction... the spring exerts a force in the axial direction onto the H-MTD module
Implementation Method 2
An electrical signal travels as an electromagnetic field with a changing strength in time... through space
Implementation Method 3
the amount, position and type of dielectric material between the conductors... the electromagnetic wave will lose speed
Data Source
Figure 1~4
Figure 5
Figure 6~8
AI summary
A connector comprises a housing with at least one H-MTD module inserted in the housing in an axial direction. An electrical terminal is fixed in the H-MTD module and a cover is latched with the housing. A spring is provided to bias the H-MTD module in the axial direction.