Passive Element Array Terminal Isolation via Perpendicular Lamination

Resolve Bottlenecks,
Find Innovative Solutions
Generate Solutions

Solution Overview

Problem

Conventional passive element arrays face challenges in ensuring isolation between input/output terminals for adjacent coil elements, despite effective isolation between the coil elements themselves.

Innovation Solution

The passive element array is configured with passive elements arranged perpendicular to the lamination direction of base material layers, with input/output terminals on different main surfaces of the element body, and a ground terminal positioned between terminal pairs to ensure isolation, reducing terminal interference and signal distortion.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Quantity of substance

If passive elements are arranged adjacent to each other in conventional passive element arrays, then the element density is improved, but isolation between input/output terminals deteriorates

Engineering Contradiction:
Improveelement densityVSAvoidterminal interference
Core Design Contradiction:
Quantity of substanceVSObject-affected harmful factors

Solution Approach 1:

The patent applies dimensionality change by arranging passive elements adjacent to each other in the planar direction (horizontal arrangement) rather than stacking them vertically. This allows multiple passive elements to coexist in a compact area while maintaining isolation between their input/output terminals, as each terminal pair is contained within its own passive element structure. The horizontal arrangement in the element body enables high density without the terminal interference that would result from vertical stacking or closely spaced vertical arrangements.

Inventive Principle:
Principle #17Another dimension (Dimensionality change)

2Area of stationary object

If passive elements are arranged vertically stacked, then the area occupation is reduced, but isolation between adjacent passive elements deteriorates

Engineering Contradiction:
Improvearea occupationVSAvoidelement interference
Core Design Contradiction:
Area of stationary objectVSObject-affected harmful factors

Solution Approach 1:

The patent resolves this contradiction by changing the arrangement dimension from vertical stacking to horizontal adjacency within the element body. Passive elements are arranged side-by-side in the planar direction, which reduces area occupation compared to vertical stacking while maintaining effective isolation between elements. The isolation is achieved because each passive element's magnetic field is contained within its own structure, and adjacent elements do not directly interfere with each other's operation.

Inventive Principle:
Principle #17Another dimension (Dimensionality change)

3Object-affected harmful factors

If passive elements are arranged with different winding axes, then isolation between coil elements is improved, but device complexity increases

Engineering Contradiction:
Improvecoil element interferenceVSAvoidstructural complexity
Core Design Contradiction:
Object-affected harmful factorsVSDevice complexity

Solution Approach 1:

The patent applies local quality by allowing each passive element to have its own specific winding axis orientation tailored to its functional requirements. Rather than imposing a uniform arrangement on all elements, each element can be independently configured with the optimal winding axis for its intended purpose. This localized customization achieves effective isolation between coil elements while avoiding the complexity of a rigid, standardized arrangement system.

Inventive Principle:
Principle #3Local quality

Data Source

PatentUS10264676B2Passive element array and printed wiring board
Publication Date: 2019.04.16 MURATA MFG CO LTD
  • US10264676B2 patent drawing
  • US10264676B2 patent drawing
  • US10264676B2 patent drawing

AI summary

A passive element array includes an element body including laminated base material layers, first and second passive elements arranged in the element body perpendicular or substantially perpendicular to a lamination direction of the plurality of base material layers, a pair of first input/output terminals provided at one main surface of the element body and connected to the first passive element and a pair of second input/output terminals provided at the other main surface of the element body and connected to the second passive element.