Adjustable-Core Inductor for Low-Loss Hum Noise Suppression
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Solution Overview
Problem
Current network systems face challenges in maintaining low transmission loss and high Hum noise suppression while supporting increased transmission bandwidth demands in bi-directional CATV networks.
Innovation Solution
An inductor design featuring a magnetic core with multiple magnetic portions of different radial sizes, combined with a coil structure that includes winding portions with varying turn spacings and opposite winding directions, to adjust inductance and enhance noise suppression.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the transmission bandwidth is increased to meet growing network data demand, then the network capacity and service types are improved, but the transmission loss increases and network equipment deployment cost increases
Solution Approach 1:
The patent adjusts the inductance value of the inductor by changing the magnetic core structure (using different magnetic material combinations or core geometries) to optimize the matching impedance for different transmission bandwidth frequencies. This parameter adjustment reduces signal reflection and transmission loss, enabling efficient operation across expanded bandwidth ranges without increasing energy loss.
2Adaptability or versatility
If multiple network channels are deployed to improve user experience quality, then the network service capability is improved, but the deployment cost and maintenance cost of network equipment increase
Solution Approach 1:
The patent designs a universal inductor structure with adjustable inductance values that can be configured for different transmission bandwidth frequencies (e.g., 5MHz-1000MHz). This single multi-functional inductor design replaces the need for multiple specialized inductors for different network channels, thereby maintaining service versatility while reducing equipment deployment complexity and cost.
3Adaptability or versatility
If the inductance value is adjusted to accommodate different transmission bandwidth frequencies, then the adaptability to different network requirements is improved, but the device complexity increases
Solution Approach 1:
The patent employs a dynamic inductance adjustment mechanism where the inductance value can be changed by switching between different magnetic core configurations or using a variable magnetic core material. This dynamic design allows the inductor to adapt to different transmission bandwidth frequencies without requiring completely different inductor designs, thereby achieving adjustability while controlling structural complexity through a unified adjustable architecture.
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 inductor effectively reduces transmission loss and Hum noise, while allowing for adjustable inductance to accommodate different transmission bandwidth frequencies, thereby improving network performance and user experience.
Implementation Method 1
The magnetic core includes a first magnetic portion and a second magnetic portion. The first magnetic portion and the second magnetic portion are arranged in an axial direction of the coil, and the first magnetic portion and the second magnetic portion have different radial sizes.
Implementation Method 2
The first winding portion is wound counterclockwise around the magnetic core, and the second winding portion is wound clockwise around the magnetic core.
Data Source
AI summary
An inductor includes a coil and a magnetic core. The coil has a cavity which extends axially, and the magnetic core is disposed through the cavity. The magnetic core includes a first magnetic portion and a second magnetic portion. The first magnetic portion and the second magnetic portion are arranged in an axial direction of the coil, and the first magnetic portion and the second magnetic portion have different radial sizes.