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

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

Published on: May 2, 2018

Miniaturized Dual Antiphase Patch Antenna Radiating into the Human Body at 2.4 GHz.

Johnathan W Adams¹, Louis Chen¹, Peter Serano¹

¹Electrical and Computer Engineering Department, Worcester Polytechnic Institute, Worcester, MA 01609, USA.

IEEE Journal of Electromagnetics, RF and Microwaves in Medicine and Biology

|October 27, 2023

Summary

This summary is machine-generated.

Researchers developed the smallest on-body antenna for microwave imaging, enhancing signal penetration. This miniaturized antenna design optimizes performance for high-resolution medical imaging applications.

Keywords:

Microwave imaging antenna array dual antiphase patch antenna human body model miniaturization numerical simulations surface waves

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Area of Science:

Electromagnetic Engineering
Biomedical Engineering
Antenna Design

Background:

On-body antennas are crucial for microwave imaging, but miniaturization and signal penetration remain challenges.
Existing antenna designs often compromise performance for size, limiting their application in dense arrays for high-resolution imaging.
Enhanced signal penetration is key for effective subsurface tissue visualization using microwave imaging.

Purpose of the Study:

To design and evaluate a miniaturized, low-profile on-body antenna for microwave imaging.
To achieve enhanced signal penetration into biological tissues.
To create the smallest known on-body antenna for the 2.4 GHz band suitable for dense array integration.

Main Methods:

Designed a dual antiphase patch antenna element with an integrated 180-degree on-chip power combiner.
Numerically simulated and experimentally validated the antenna's performance.
Optimized antenna size (18.5 mm x 10 mm x 1.6 mm) considering Signal-to-Noise Ratio (SNR) and bandwidth (2.3-2.5 GHz).
Accounted for surface wave effects to maximize SNR.

Main Results:

Developed a 18.5 mm x 10 mm x 1.6 mm on-body antenna, the smallest reported for the target frequency band.
Demonstrated potential for enhanced signal penetration into tissue.
Achieved a compromise between miniaturization, SNR, and a 2.3-2.5 GHz bandwidth.
Validated the design through numerical and experimental evaluations.

Conclusions:

The developed miniaturized dual antiphase patch antenna is a promising building block for dense arrays in high-resolution microwave imaging.
The design offers enhanced signal penetration and a favorable SNR, crucial for medical applications.
This antenna represents a significant advancement in size reduction for on-body microwave imaging systems.