Magnetic Conductive Structure for Large-Sample Electromagnetic Measurement

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Solution Overview

Problem

Existing electromagnetic property measuring methods require samples to be cut or reproduced to specific sizes, leading to inaccurate measurements of actual application sizes and limiting large-area measurement capabilities, resulting in inefficient design simulations and increased development costs.

Innovation Solution

An electromagnetic property measuring device with a magnetic conductive structure and coil that generates a magnetic field, allowing direct measurement of samples without cutting, using a scattering parameter measuring unit to analyze properties on the sample's surface, enabling accurate measurement of large-area samples.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Measurement precision

If existing electromagnetic property measuring methods (coaxial method, waveguide method, cavity resonator perturbation method) are used, then measurement can be performed on samples, but samples must be cut or reproduced to specific sizes which leads to inaccurate measurements and limits large-area measurement capabilities

Engineering Contradiction:

Improveelectromagnetic property measurement accuracyVSAvoidsample size adaptability

Core Design Contradiction:

Measurement precisionVSAdaptability or versatility

Solution Approach 1:

The measuring device is divided into a movable measuring unit and a stationary coil structure. The measuring unit can be positioned at different locations on the sample surface, enabling measurement of large-area samples without requiring the entire sample to fit within a fixed measurement space. This segmentation allows the measurement system to adapt to samples of various sizes.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

A magnetic conductive structure with magnetic gaps is introduced as an intermediary between the coil and the sample. This magnetic conductive structure concentrates and guides the magnetic field to the measurement point, enabling accurate local measurement while the measuring unit can be moved to different positions on the sample surface.

Inventive Principle:

Principle #24Intermediary (Mediator)

2Ease of manufacture

If samples are cut or reproduced to specific sizes for measurement, then measurement can be performed using conventional methods, but the electromagnetic properties measured differ from actual application properties leading to erroneous determination

Engineering Contradiction:

Improvemeasurement process simplicityVSAvoidelectromagnetic property accuracy

Core Design Contradiction:

Ease of manufactureVSMeasurement precision

Solution Approach 1:

The measuring unit is designed to be movable rather than fixed, allowing dynamic repositioning on the sample surface. This enables measurement of the actual sample in its intended configuration without requiring cutting or reproduction, thereby obtaining accurate electromagnetic properties that reflect actual application conditions.

Inventive Principle:

Principle #15Dynamics

3Device complexity

If conventional measuring methods are applied, then measurement setup is straightforward, but large-area measurement is not supported resulting in time-consuming material development and increased costs

Engineering Contradiction:

Improvemeasuring device structureVSAvoidmeasurement efficiency

Core Design Contradiction:

Device complexityVSProductivity

Solution Approach 1:

The measurement system is segmented into a movable measuring unit that can be repositioned across different areas of large samples. This allows comprehensive coverage of large-area samples without requiring a completely complex fixed measurement system, improving measurement efficiency while maintaining reasonable device complexity.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The measuring device is designed with universal applicability to samples of various sizes and shapes. The movable measuring unit combined with the magnetic conductive structure enables the same device to measure both small and large samples efficiently, eliminating the need for different measurement setups and reducing development time.

Inventive Principle:

Principle #6Universality (Multi-functionality)

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 solution improves measurement accuracy by allowing intact samples to be measured on their surface, reducing shape-related errors and enabling efficient development of materials and devices without size constraints.

Implementation Method 1

The coil surrounds the magnetic conductive structure to generate a magnetic field with the magnetic conductive structure

Methodology Applied

Scientific EffectMagnetic field generation: Electromagnetic Induction

Data Source

PatentUS11573277B2Electromagnetic property measuring device, electromagnetic property measuring system and electromagnetic property measuring method

Publication Date: 2023.02.07 IND TECH RES INST

AI summary

An electromagnetic property measuring device includes a magnetic conductive structure, a coil, and a scattering parameter measuring unit. The magnetic conductive structure includes a first side facing a sample to be tested and a second side opposite to the first side, and the first side has a magnetic gap. The coil surrounds the magnetic conductive structure to generate a magnetic field with the magnetic conductive structure. The scattering parameter measuring unit is disposed at the first side and located within a range of the magnetic field.