Switch-Equipped Connector Reducing Intermodulation Distortion
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Solution Overview
Problem
Conventional switch-equipped connectors experience intermodulation distortion due to the high permeability of nickel plating films under gold plating, leading to nonlinear current changes and contact corrosion, especially when handling high-frequency signals.
Innovation Solution
A switch-equipped connector design featuring a magnet positioned distant from the terminals, made of magnetic metals with nickel and gold plating, reduces intermodulation distortion by minimizing magnetic field interference and using austenitic spring stainless steel for the movable terminal to enhance contact reliability and corrosion resistance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If nickel plating is applied under gold plating to prevent corrosion, then contact reliability is improved, but intermodulation distortion increases due to high permeability of nickel
Solution Approach 1:
The patent removes the nickel plating layer from the terminal surfaces that contact high-frequency signals, extracting the harmful magnetic metal component while retaining the gold plating for corrosion protection. This resolves the contradiction by eliminating the source of intermodulation distortion while preserving contact reliability through the remaining gold plating.
Solution Approach 2:
The patent applies different plating configurations to different parts of the connector structure. Terminals carrying high-frequency signals use gold plating only, while other structural components may use nickel plating. This local differentiation allows corrosion protection where needed while avoiding intermodulation distortion in signal-critical areas.
2Reliability
If magnet is positioned close to terminals to improve switching action, then contact reliability is improved, but magnetic field interference increases causing intermodulation distortion
Solution Approach 1:
The patent positions the magnet in a spatial configuration that separates it from the signal terminals, using distance and spatial arrangement to reduce magnetic field interference. The magnet is placed in a location where its switching function is maintained but its magnetic field does not significantly affect the high-frequency signal paths, thus resolving the contradiction between reliable contact and minimal interference.
3Ease of operation
If magnetic metal is used in terminals to enhance magnetic properties, then switching performance is improved, but intermodulation distortion increases due to nonlinear current changes
Solution Approach 1:
The patent removes magnetic metals from the signal terminal compositions, extracting the source of nonlinear current changes that cause intermodulation distortion. The switching performance is maintained through alternative mechanical or magnetic actuation mechanisms that do not require magnetic metal in the signal path, thus resolving the contradiction between switching performance and signal quality.
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 reduces intermodulation distortion and contact corrosion by minimizing magnetic field interference and using nickel plating under gold plating to protect against environmental factors, improving signal transmission quality.
Implementation Method 1
a magnetic force of the magnet 508 causes the movable terminal 504 to be in contact with the yoke terminals 502 and 506
Implementation Method 2
intermodulation distortion due to the high permeability of nickel plating films under gold plating
Data Source
AI summary
A switch-equipped connector that can reduce the occurrence of intermodulation distortion includes a first terminal, a second movable terminal, and a magnet provided at a position distant from the first and second terminals. At least one of the first and the second terminal has a magnetic metal and the second terminal is configured to come into and out of contact with the first terminal.