Resonance-Based Microwave Technique for Body Implant Sensing

González-López, Giselle; Roca, Lluís Jofre; Valdecasas, Susana Amorós García de; Rodriguez-Leor, Oriol; Gálvez‐Montón, Carolina; Bayés‐Genís, Antoni; O'Callaghan, J.M.

doi:10.3390/s19224828

Cited by 5 publications

(1 citation statement)

References 13 publications

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“…In this sense, a preliminary exploratory work in [23,24] was presented based on the capability of extracting these low-frequency ( f 1 kHz) biological signals as the modulating effect on an interrogating focused incident high-frequency microwave signal (carrier signal). The microwave signal is able to propagate inside (in and out) of the human body, being focused (with a UWB multi-probe geometry [25]) on a specific region of it, and eventually becoming affected (modulated) by the low-frequency ( f 1 kHz) functional biological signals. After obtaining the information from the action potential signal representing the functional activity, it is located back.…”

Section: Introductionmentioning

confidence: 99%

UWB-Modulated Microwave Imaging for Human Brain Functional Monitoring

Akazzim

Jofre

Mrabet

et al. 2023

Sensors

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Morphological microwave imaging has shown interesting results on reconstructing biological objects inside the human body, and these parameters represent their actual biological condition, but not their biological activity. In this paper, we propose a novel microwave technique to locate the low-frequency (f≃1 kHz) -modulated signals produced by a microtag mimicking an action potential and proved it in a cylindrical phantom of the brain region. A set of two combined UWB microwave applicators, operating in the 0.5 to 2.5 GHz frequency band and producing a nsec interrogation pulse, is able to focus its radiated field into a small region of the brain containing the microtag with a modulated photodiode. The illuminating UWB microwave field was first modulated by the low-frequency (f≃1 kHz) electrical signal produced by the photodiode, inducing modulated microwave currents into the microtag that reradiating back towards the focusing applicators. At the receiving end, the low-frequency (f≃1 kHz) -modulated signal was first extracted from the full set of the backscattered signals, then focused into the region of interest and spatially represented in the corresponding region of the brain, resulting in a spatial resolution of the images in the order of 10 mm.

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Section: Introductionmentioning

confidence: 99%

UWB-Modulated Microwave Imaging for Human Brain Functional Monitoring

Akazzim

Jofre

Mrabet

et al. 2023

Sensors

Self Cite

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Microwaves for medical diagnostic radiology: from proofs-of-concept to real world needs

Bolomey,

Pichot,

Jofre-Roca

2023

2023 IEEE Conference on Antenna Measurements and Applications (CAMA)

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Characterization of resonant coupled inductor in a wireless power transfer system

Nebrida

2024

Journal of Electrical Systems and Inf Technol

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Wireless power transfer (WPT) has garnered significant interest as a potentially transformative technology in the energy sector, as it presents a novel approach to powering and charging devices. The functionality of this technology is predicated upon the utilization of electromagnetic coupling to facilitate the wireless transmission of energy between two entities. Despite the considerable potential, wireless power transfer (WPT) faces significant obstacles that restrict its practical feasibility. One notable challenge that arises is the decrease in power transfer efficiency as the distance between the transmitter and receiver increases. Moreover, the wireless power transfer (WPT) technology is further limited by its reliance on accurate alignment between the transmitting source and the receiving device, thereby posing challenges for its practical implementation. The issues present substantial obstacles to the widespread commercialization of wireless power transfer (WPT). This study seeks to improve the efficacy of power transfer by optimizing the resonance frequency of the power transfer in response to the challenges. By systematically manipulating various parameters including coil dimensions, input voltage levels, and operational frequency, a novel approach is proposed to enhance the efficiency of power transfer. The study additionally offers valuable insights regarding the correlation between the distance separating the coils and the efficiency of power transfer. The findings of this study offer a thorough empirical analysis and are supported by a strong theoretical framework, resulting in a substantial coefficient of determination (R2 = 0.937118). This finding suggests that the linear regression model under consideration could account for approximately 93.7118 percent of the variability observed in the distance. The findings of this study establish a pathway toward enhanced and feasible wireless power technology, thereby establishing a robust basis for the prospective commercial implementation of wireless power transfer (WPT) systems.

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Resonance-Based Microwave Technique for Body Implant Sensing

Cited by 5 publications

References 13 publications

UWB-Modulated Microwave Imaging for Human Brain Functional Monitoring

UWB-Modulated Microwave Imaging for Human Brain Functional Monitoring

Microwaves for medical diagnostic radiology: from proofs-of-concept to real world needs

Characterization of resonant coupled inductor in a wireless power transfer system

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