微波乳腺筛查中的表面波和背辐射抑制

IF 3 Q2 ENGINEERING, ELECTRICAL & ELECTRONIC IEEE Journal of Electromagnetics RF and Microwaves in Medicine and Biology Pub Date : 2024-04-12 DOI:10.1109/JERM.2024.3385335
Milad Mokhtari;Milica Popović
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引用次数: 0

摘要

微波乳腺筛查系统的天线设计面临着两个不同的挑战:1) 尽量减少基底和组织界面的表面波传播,以及 2) 解决背辐射问题。这些表面波在基底内会变得更加明显,尤其是当存在限制性地平面时,然而地平面对于实现单向性和屏蔽环境辐射至关重要。本文介绍了一个简化的人体乳房模型,并对现有的表面波进行了定量分析。然后,我们提出了一种带有寄生元件的 16 天线阵列空腔贴片天线,设计工作频率为 3.1-5.1 GHz。每个天线元件都经过优化,可与乳腺组织无缝连接。全波仿真表明,与前代产品相比,拟议的天线阵列实现了出色的单向性,并降低了相互耦合水平。我们进一步概述了采用 SYLGARD(TM) 184 硅弹性体 PDMS 套件的高性价比制造方法。天线元件的测量结果与全波仿真结果一致。
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Surface Wave and Back Radiation Suppression in Microwave Breast Screening
The challenges in antenna design for microwave-based breast screening systems identify two distinct needs: 1) to minimize the surface-wave propagation at the interface between the substrate and the tissue, and 2) to address the back-radiation. These surface waves become more noticeable within the substrate, particularly when a confining ground plane is present, and yet the ground plane is pivotal for achieving unidirectionality and shielding against environmental radiation. This paper introduces a simplified human breast model and offers a quantitative analysis of existing surface waves. We then propose a 16-antenna array of cavity-backed patch antennas with parasitic elements, designed for operation in the 3.1–5.1 GHz range. Each antenna element is optimized to function seamlessly alongside the breast tissue. Full-wave simulations illustrate that the proposed antenna array achieves superior unidirectionality and diminished mutual coupling levels when compared to its predecessor. We further outline the cost-effective fabrication method that employs the SYLGARD(TM) 184 silicone elastomer PDMS kit. The measurements from the fabricated antenna elements are consistent with the results of the full-wave simulations.
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来源期刊
CiteScore
5.80
自引率
9.40%
发文量
58
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Front Cover Table of Contents IEEE Journal of Electromagnetics, RF, and Microwaves in Medicine and Biology About this Journal IEEE Journal of Electromagnetics, RF and Microwaves in Medicine and Biology Publication Information Models of Melanoma Growth for Assessment of Microwave-Based Diagnostic Tools
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