Multilayer Filter Layout for Magnetic Coupling Adjustment
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Solution Overview
Problem
Existing multilayer electronic components with high-pass and low-pass filters face challenges in adjusting magnetic coupling between filters, particularly when two high-pass filters are placed between two low-pass filters, leading to difficulties in achieving desired characteristics.
Innovation Solution
A multilayer electronic component design with two low-pass filters and two high-pass filters, where the inductors are arranged such that their openings face each other and are adjacent, facilitating the adjustment of characteristics between the filters, and the filters are integrated in a stack of dielectric layers.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If two high-pass filters are placed between two low-pass filters in a circuit configuration, then the band-pass filter achieves desired frequency characteristics, but adjustment of magnetic coupling between the low-pass filters becomes difficult
Solution Approach 1:
The patent transitions from planar arrangement to three-dimensional stacked arrangement of inductors. By stacking inductors vertically across multiple dielectric layers, the invention enables magnetic coupling adjustment through vertical positioning and spacing control, resolving the contradiction between achieving desired frequency characteristics and enabling easy adjustment of magnetic coupling.
Solution Approach 2:
The patent introduces adjustable spacing between stacked inductors through dielectric layers of varying thicknesses. This dynamic positioning capability allows the magnetic coupling between low-pass filters to be adjusted by changing the vertical distance between inductors, while maintaining the required frequency characteristics through controlled inductor placement.
2Volume of moving object
If inductors are wound around an axis orthogonal to the stacking direction of dielectric layers, then the multilayer structure achieves compact integration, but adjustment of characteristics between filters becomes difficult when filters are not electrically connected
Solution Approach 1:
The patent utilizes the vertical stacking dimension to enable characteristic adjustment. By arranging inductors in multiple layers with controlled vertical spacing, the invention provides adjustment capability through the stacking direction while maintaining compact horizontal integration. The vertical dimension becomes the adjustment degree of freedom.
Solution Approach 2:
The patent introduces dielectric layers as intermediaries between stacked inductors. These dielectric layers serve as adjustable spacers that control the magnetic coupling between inductors in different layers, enabling characteristic adjustment without requiring direct electrical connection between filters.
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 design allows for improved adjustment of characteristics between filters, enhancing the performance and functionality of the multilayer electronic component.
Implementation Method 1
adjustment of magnetic coupling between the two low-pass filters is difficult
Data Source
AI summary
First to fourth filters of an electronic component are provided in a manner that a first path from the first filter to the second filter includes a second path from the third filter to the fourth filter and is also longer than the second path in a circuit configuration. First to fourth inductors of the first to fourth filters are arranged in a manner that an opening of the first inductor and an opening of the third inductor face each other, an opening of the second inductor and an opening of the fourth inductor face each other, and a pair of the second inductor and the fourth inductor is adjacent to a pair of the first inductor and the third inductor.