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Updated: Jun 1, 2025

Effective Analysis of Human Exposure Conditions with Body-worn Dosimeters in the 2.4 GHz Band

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Published on: May 2, 2018

Analytical model for helical particle array assessment for EMI shielding applications.

Ayoub Hamidi¹, Ahmad Cheldavi^2,3, Asghar Habibnejad Korayem^4,5

¹School of Electrical Engineering, Iran University of Science and Technology, Tehran, 13114-16846, Iran. ayoub_hamidi@cmps2.iust.ac.ir.

Scientific Reports

|January 17, 2025

Summary

This study presents a fast analytical method for designing electromagnetic interference (EMI) shielding composites using helical metal particles. The approach optimizes shielding effectiveness by analyzing particle properties and proposing multi-layer structures.

Keywords:

Circuit analysis Concrete composite media Electromagnetic shielding Helical additives Planar arrays Power transmission

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Last Updated: Jun 1, 2025

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Assembly and Characterization of Polyelectrolyte Complex Micelles

Assembly and Characterization of Polyelectrolyte Complex Micelles

Published on: March 2, 2020

Area of Science:

Materials Science
Electromagnetics
Applied Physics

Background:

Electromagnetic interference (EMI) shielding is crucial for electronic devices.
Existing research on composite shielding often lacks robust analytical frameworks.
Composite slabs with helical particles offer potential for advanced EMI shielding.

Purpose of the Study:

To introduce a novel analytical method for power transmission analysis in helical particle arrays.
To develop a theoretical framework for designing effective EMI shielding composites.
To leverage magnetoelectric properties for enhanced shielding performance.

Main Methods:

Analytical method based on circuit modeling and modal field decomposition.
Theoretical analysis of power transmission through infinite arrays of helical metal particles.
Proposal of multi-layer structures to broaden bandwidth.

Main Results:

Demonstrated the impact of helix transmission modes and magnetic fields on shielding.
Showcased tunability of array resonances via helix property engineering.
Achieved computationally efficient analysis with results validated by experimental measurements.

Conclusions:

The proposed analytical method provides a fast and accurate approach for EMI shielding composite design.
The circuit model is ideal for optimizing shielding structures.
Engineering helix properties and using multi-layer designs enhance shielding effectiveness and bandwidth.