On the design of wearable and epidermal antennas for emerging medical applications

Rishani, Nadeen; Shubair, Raed M.; Aldabbagh, Ghadah

doi:10.1109/senset.2017.8125046

Cited by 11 publications

(8 citation statements)

References 20 publications

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“…Roger ULTRALAM is a liquid crystalline polymer (LCP) material that provides constant electrical properties for tightly controlled impedance matching and is used to manufacture electronic devices [32]. Owing to its minimal dielectric and tangent losses, Roger ULTRALAM is preferred for biomedical applications [33]. A 50Ω coaxial feed port with a diameter of 0.6 mm was used to excite the antenna.…”

Section: A Antenna Designmentioning

confidence: 99%

Miniaturized Antenna for High Data Rate Implantable Brain-Machine Interfaces

et al. 2022

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Technological advancements in medical care have necessitated the development of efficient and miniaturized implantable medical devices. This paper presents an ultra-wide-band implantable antenna for use in scalp-based biomedical applications covering the industrial, scientific, and medical (ISM) (2.4−2.48 GHz) band. The proposed antenna is mounted on a 0.1−mm thick liquid crystalline polymer (LCP) Roger ULTRALAM (tanδ = 0.0025 and ε r = 2.9), serving as a dielectric material for both the superstrate and substrate layers. LCP materials are widely used in manufacturing electronic devices owing to their desirable properties, including flexibility, conformable structure, and biocompatibility. To preserve the capability of an electrically small radiator and achieve optimum performance, the proposed antenna is designed to have a volume of 9.8 mm 3 (7 mm ×7 mm × 0.2 mm). The addition of a shorting pin and open-ended slots in the radiating patch, and close-ended slots in the ground plane facilitates antenna miniaturization, impedance matching, and bandwidth expansion. Notably, the antenna exhibits a peak gain of −20.71 dBi and impedance-matched bandwidth of 1038.7 MHz in the ISM band. Moreover, the antenna is safe to use according to the IEEE C905.1-2005 safety guidelines based on low specific absorption rates. To evaluate the performance of the implantable antenna, finite-element simulation was performed in homogeneous and heterogeneous environments. For validation, measurements were performed in a minced pork-filled container. The simulation results are consistent with the measurements. In addition, a link budget analysis is performed to confirm the robustness and reliability of the wireless telemetric link and determine the range of the implantable antenna. INDEX TERMSImplantable antenna, high gain, novel shaped, specific absorption rate, ultra-wide band. Several frequency bands are regulated by the Federal Communications Commission (FCC) for use in biomedical applications, including medical implant communications service (MICS, 402−405 MHz), improved MICS, called the medical device radio communication Service (MedRadio, 401−406 MHz) [11], and industrial, scientific, and medical (ISM, 433−438 MHz; 902−928 MHz; 2.4−2.48 GHz; and 5.725−5.875 GHz) bands. To extend the device lifetime and battery energy, a sleep-wakeup mode is utilized at 2.45 GHz VOLUME 4, 2016

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Section: A Antenna Designmentioning

confidence: 99%

Miniaturized Antenna for High Data Rate Implantable Brain-Machine Interfaces

et al. 2022

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“…In addition, it has been demonstrated that the ability of the textile fibers to absorb moisture affects significantly the performances and reduces the operating frequency and bandwidth of the patch antennas [47,48], while patch antennas produced by inkjet-printing technique are prone to damage, operating frequency shifts, and losses due to compressing and tensioning of the conducting ink surface. The design of epidermal antenna sensors is challenging as its characteristics are directly affected by the human body tissue [49]. Furthermore, the thickness of the material and its characteristics impact the gain, return loss, and the size of the antenna, along with the impedance matching which is crucial in particular when the antenna is connected to biosensing devices and RFID chips if used within RFID tags [50].…”

Section: Wearable Antennamentioning

confidence: 99%

New Generation Wearable Antenna Based on Multimaterial Fiber for Wireless Communication and Real-Time Breath Detection

et al. 2018

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Smart textiles and wearable antennas along with broadband mobile technologies have empowered the wearable sensors for significant impact on the future of digital health care. Despite the recent development in this field, challenges related to lack of accuracy, reliability, user’s comfort, rigid form and challenges in data analysis and interpretation have limited their wide-scale application. Therefore, the necessity of developing a new reliable and user friendly approach to face these problems is more than urgent. In this paper, a new generation of wearable antenna is presented, and its potential use as a contactless and non-invasive sensor for human breath detection is demonstrated. The antenna is made from multimaterial fiber designed for short-range wireless network applications at 2.4 GHz frequency. The used composite metal-glass-polymer fibers permits their integration into a textile without compromising comfort or restricting movement of the user due to their high flexibility, and shield efficiently the antenna from the environmental perturbation. The multimaterial fiber approach provided a good radio-frequency emissive properties, while preserving the mechanical and cosmetic properties of the garments. With a smart textile featuring a spiral shape fiber antenna placed on a human chest, a significant shift of the operating frequency of the antenna was observed during the breathing process. The frequency shift is caused by the deformation of the antenna geometry due to the chest expansion, and to the modification of the dielectric properties of the chest during the breath. We demonstrate experimentally that the standard wireless networks, which measure the received signal strength indicator (RSSI) via standard Bluetooth protocol, can be used to reliably detect human breathing and estimate the breathing rate in real time. The mobile platform takes the form of a wearable stretching T-shirt featuring a sensor and a detection base station. The sensor is formed by a spiral-shaped antenna connected to a compact Bluetooth transmitter. Breathing patterns were recorded in the case of female and male volunteers. Although the chest anatomy of females and males is different compared, the sensor’s flexibility allowed recording successfully a breathing rate of 0.3 Hz for the female and 0.5 Hz for the male, which corresponds to a breathing rate of 21 breaths per minutes (bpm) and 30 bpm, respectively.

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“…Furthermore, the blockchain is utilized to manage and distribute spectrum resources, potentially eliminating the need for a central authority since blockchains are unalterable, untampered distributed databases [45][46][47][48][49][50][51][52]. In spite of spectral efficiency, improving energy consumption effectiveness is also important [53][54][55][56][57][58][59]. As a result, simultaneous wireless intelligence and power transmission (SWIPT) technology is used to extend the life of the battery while reducing power usage [60][61][62][63][64][65][66].…”

Section: Introductionmentioning

confidence: 99%

Uplink Throughput Analysis of an IRS-Assisted 6G Wireless Network

Mahbub,

Shubair

2024

Preprint

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The fundamental purpose of the study is to expand coverage, i.e., permit better transmission, by implementing IRS beneath micro cellular transmissions via a two-tier 6G framework consisting of one micro cellular layer operating beneath the macro cellular-based layer. As a consequence, the study used simulation-based measuring methodologies to assess and compare the functioning of standard micro-cellular connections to IRS-enhanced micro-cellular networks in terms of throughput of uplink. The study found that implementing IRS significantly enhances coverage, or transmission effectiveness, for 6G services.

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On the design of wearable and epidermal antennas for emerging medical applications

Cited by 11 publications

References 20 publications

Miniaturized Antenna for High Data Rate Implantable Brain-Machine Interfaces

Miniaturized Antenna for High Data Rate Implantable Brain-Machine Interfaces

New Generation Wearable Antenna Based on Multimaterial Fiber for Wireless Communication and Real-Time Breath Detection

Uplink Throughput Analysis of an IRS-Assisted 6G Wireless Network

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