Enhancement of Penetration of Millimeter Waves by Field Focusing Applied to Breast Cancer Detection

Iliopoulos, Ioannis; Meo, Simona Di; Pasian, Marco; Pouliguen, Philippe; Potier, Patrick; Perregrini, Luca; Sauleau, Ronan; Ettorre, Mauro

doi:10.1109/tbme.2020.3014277

Cited by 25 publications

(11 citation statements)

References 27 publications

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“…Experimental validation of the numerical results would require high-resolution near-field measurements in presence of a tissue-equivalent model. Conventional methods of free-space measurement at MMW are not suited to estimate the power density on the phantom surface [42]. Use of the infrared imaging successfully employed for near-field dosimetry at MMW [43]- [45] is complicated by the presence of textiles.…”

Section: Discussionmentioning

confidence: 99%

Antenna/Human Body Coupling in 5G Millimeter-Wave Bands: Do Age and Clothing Matter?

Sacco¹,

Nikolayev²,

Sauleau³

2021

IEEE J. Microw.

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With the fast development of 5th generation (5G) mobile networks and prominence of the personal area networks and human-centered communications, people of all ages are increasingly exposed in the upper part of the microwave spectrum. In some exposure scenarios, presence of a textile between the radiating source and skin can affect the power absorption. This study investigates, for the first time, the effect of ageing and impact of textile on the power deposition in a skin-equivalent model under near-field exposure induced by multi-beam radiating structures at 26 GHz and 60 GHz. An array of four Yagi antennas has been used as a representative example of 5G reconfigurable antennas. The maximum increase of the averaged absorbed power density with respect to the averaged value for adults is observed at 70 year (8.8% at 26 GHz and 6.9% at 60 GHz). The strongest decrease is for 5-years-old children (−4.5% at 26 GHz and -3.7% at 60 GHz). In presence of a textile, the absorbed power density can increase or decrease depending on the textile properties (thickness and permittivity) and on the thickness of the air gap between textile and skin. With cotton and wool (considered as representative textile materials) the maximum increase of the averaged absorbed power density is about 40% compared to the bare skin.INDEX TERMS 5G, ageing, electromagnetic dosimetry, millimeter waves (MMW), textile.This article has been accepted for inclusion in a future issue of this journal. Content is final as presented, with the exception of pagination.

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Section: Discussionmentioning

confidence: 99%

Antenna/Human Body Coupling in 5G Millimeter-Wave Bands: Do Age and Clothing Matter?

Sacco¹,

Nikolayev²,

Sauleau³

2021

IEEE J. Microw.

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“…Moreover, the authors showed that a conformal system layout is better than the linear layout, as the target position was identified in the breast model at a depth of around 41 mm, which can be considered in good agreement with the theoretical depth of 40 mm. In another study, Iliopoulos et al [ 87 ] proposed a field-focusing technique based on a convex optimization method to improve the penetration of mm-waves into tissue-mimicking phantoms. The theoretical and simulation results were in good agreement, which validated the overall approach.…”

Section: Challenges and Future Research Directionsmentioning

confidence: 99%

Microwave Imaging for Early Breast Cancer Detection: Current State, Challenges, and Future Directions

et al. 2022

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Breast cancer is the most commonly diagnosed cancer type and is the leading cause of cancer-related death among females worldwide. Breast screening and early detection are currently the most successful approaches for the management and treatment of this disease. Several imaging modalities are currently utilized for detecting breast cancer, of which microwave imaging (MWI) is gaining quite a lot of attention as a promising diagnostic tool for early breast cancer detection. MWI is a noninvasive, relatively inexpensive, fast, convenient, and safe screening tool. The purpose of this paper is to provide an up-to-date survey of the principles, developments, and current research status of MWI for breast cancer detection. This paper is structured into two sections; the first is an overview of current MWI techniques used for detecting breast cancer, followed by an explanation of the working principle behind MWI and its various types, namely, microwave tomography and radar-based imaging. In the second section, a review of the initial experiments along with more recent studies on the use of MWI for breast cancer detection is presented. Furthermore, the paper summarizes the challenges facing MWI as a breast cancer detection tool and provides future research directions. On the whole, MWI has proven its potential as a screening tool for breast cancer detection, both as a standalone or complementary technique. However, there are a few challenges that need to be addressed to unlock the full potential of this imaging modality and translate it to clinical settings.

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“…In practical terms, it means that the single antenna mid-field WPT solutions currently in literature are sub-optimal by many orders of magnitude. Therefore, to physically achieve the maximum efficiency theoretically obtained, further developments in mid-field WPT are required based on conformal antenna arrays such as in [46] and techniques for electromagnetic focusing in lossy media that have already been investigated for other biomedical applications [47]. V. CONCLUSION In order to wireless power implantable bioelectronic devices, several techniques can be employed depending upon the application characteristics.…”

Section: Wpt Efficiency As a Function Of The Transmitter Parametersmentioning

confidence: 99%

Wireless powering efficiency of deep-body implantable devices

Soares¹,

Gao²,

Šipuš³

et al. 2022

Preprint

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Enhancement of Penetration of Millimeter Waves by Field Focusing Applied to Breast Cancer Detection

Cited by 25 publications

References 27 publications

Antenna/Human Body Coupling in 5G Millimeter-Wave Bands: Do Age and Clothing Matter?

Antenna/Human Body Coupling in 5G Millimeter-Wave Bands: Do Age and Clothing Matter?

Microwave Imaging for Early Breast Cancer Detection: Current State, Challenges, and Future Directions

Wireless powering efficiency of deep-body implantable devices

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