Feedthrough Capacitor Array Crosstalk Reduction

Resolve Bottlenecks,
Find Innovative SolutionsGenerate Solutions

Solution Overview

Problem

The existing feedthrough capacitor arrays suffer from crosstalk issues between signal internal electrodes due to the overlapping ground internal electrodes, which affect noise filtering efficiency.

Innovation Solution

The design incorporates a feedthrough capacitor array with non-overlapping first and second signal internal electrodes and ground internal electrodes, where the first ground internal electrode is connected to the first signal internal electrode and the second ground internal electrode is connected to the second signal internal electrode, reducing crosstalk by arranging them in perpendicular directions and optimizing terminal electrode placement for efficient noise removal.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If ground internal electrodes are disposed between two signal internal electrodes to provide noise filtering, then noise removal capability is improved, but crosstalk occurs between signal internal electrodes through the ground internal electrode

Engineering Contradiction:

Improvenoise removal capabilityVSAvoidcrosstalk

Core Design Contradiction:

ReliabilityVSObject-generated harmful factors

Solution Approach 1:

The patent transitions from a planar alternating arrangement to a three-dimensional stacked arrangement where signal internal electrodes and ground internal electrodes are positioned on different horizontal levels. This vertical separation eliminates the overlapping problem while maintaining the noise filtering function, as signal electrodes at one level no longer overlap with ground electrodes at another level.

Inventive Principle:

Principle #17Another dimension (Dimensionality change)

Solution Approach 2:

The patent divides the capacitor array into multiple independent stacked units, each consisting of signal internal electrodes and ground internal electrodes arranged in separate layers. This segmentation allows each unit to function independently for noise filtering without causing crosstalk to adjacent units, as the electrical fields are confined to their respective stacked structures.

Inventive Principle:

Principle #1Segmentation

2Reliability

If multiple signal internal electrodes and ground internal electrodes are arranged in alternating layers, then noise filtering is enhanced, but device complexity increases

Engineering Contradiction:

Improvenoise filteringVSAvoidstructural complexity

Core Design Contradiction:

ReliabilityVSDevice complexity

Solution Approach 1:

The patent merges multiple capacitor functions into a single integrated stacked structure. By combining signal internal electrodes, ground internal electrodes, and dielectric layers into unified stacked units, the design achieves enhanced noise filtering across multiple frequency ranges without proportionally increasing structural complexity. The shared outer casing and coordinated electrode arrangements reduce the overall complexity compared to separate capacitor assemblies.

Inventive Principle:

Principle #5Merging (Combining)

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 configuration effectively reduces crosstalk between signal internal electrodes while maintaining efficient noise filtering capabilities, allowing for downsizing and improved impedance across a wider band.

Implementation Method 1

crosstalk occurs through the ground internal electrode between the two signal internal electrodes

Methodology Applied

Scientific EffectCrosstalk:

Implementation Method 2

The first ground internal electrode is electrically connected through the first ground terminal electrode to the ground, whereby noise is removed from a signal flowing in the first signal internal electrode

Methodology Applied

Scientific EffectElectromagnetic interference:

Data Source

PatentUS7446996B2Feedthrough capacitor array

Publication Date: 2008.11.04 TDK CORP

AI summary

A feedthrough capacitor array has first and second terminal electrodes, first and second ground terminal electrodes, first and second signal internal electrodes, and first and second ground internal electrodes. The first signal internal electrode and the first ground internal electrode are arranged so as to be opposed to each other through a part of a dielectric element body. The second signal internal electrode and the second ground internal electrode are arranged to be opposed to each other through a part of the dielectric element body, in an opposed direction of the first signal internal electrode and the first ground internal electrode. The first signal internal electrode and the second ground internal electrode are arranged so as not to overlap each other in the opposed direction of the first signal internal electrode and the first ground internal electrode. The second signal internal electrode and the first ground internal electrode are arranged so as not to overlap each other in the opposed direction of the first signal internal electrode and the first ground internal electrode.