Implantable Antennas for Biomedical Applications: An Overview on Alternative Antenna Design Methods and Challenges

2018 ◽  
Author(s):  
Adel W. Damaj ◽  
Hilal M. El Misilmani ◽  
Soubhi Abou Chahine
Keyword(s):  
Biomedical Applications ◽  
Design Methods ◽  
Antenna Design ◽  
Implantable Antennas

Wide Band Meandered-Loop Ground Radiation Antenna for Biomedical Applications

2021 ◽  
Vol 11 (12) ◽  
pp. 2891-2896
Author(s):  
R. Rajkumar ◽  
P. Marichamy
Keyword(s):  
Radiation Field ◽  
Biomedical Applications ◽  
Model Simulation ◽  
Single Layer ◽  
Wide Band ◽  
Impedance Match ◽  
Implantable Medical Devices ◽  
Similar Frequency ◽  
Implantable Antennas ◽  
Major Factors

The concept of wireless implantable medical devices (IMDs) is becoming more popular as the world’s population ages and concerns about public health grow. Implantable antennas have figured prominently in wireless communication among IMDs and external infrastructures, yet they have subsequently become a major study area. Among the most difficult aspects of building implantable antennas is to varied physical tissues and fluids act as dielectric stress on antenna, affecting its efficiency dramatically. Ground radiation antenna was particularly designed for the antenna size reduction. The features of the ground have an impact on it. There is variance in the radiation field with similar frequency and antenna length yet varied ground conductance. It has been discovered that when the ground conductance is low, the radiation field is minimal and the orientation of the radiation field modifies. A meandered-loop ground radiation antenna (MGRA) was designed by coupling the meandered-loop structure to the ground radiating plane using only one electrical element. The proposed antenna was studied for biomedical applications at ISM band in the range between 2.4 to 2.8 GHz. The overall size of antenna is 30×24 mm2 making it suitable for the implantable applications. The bandwidth of the MGRA was further improved by using stub structures. The single layer skin model simulation showed that |S11| parameter as −21.21 dB at the resounding frequency of 2.40 GHz. Major factors like impedance match gain, radiation effectiveness and Specific Absorption Rate (SAR) had also been evaluated in this study.

scholarly journals Flexible Wearable Antennas for Body Area Network

2020 ◽  
Vol 8 (5) ◽  
pp. 1561-1565
Keyword(s):  
Dielectric Constant ◽  
Surface Wave ◽  
Wireless Communication ◽  
Biomedical Applications ◽  
Flexible Substrate ◽  
Antenna Design ◽  
Area Network ◽  
Body Area ◽  
Wearable Antenna ◽  
Wearable Antennas

In recent years, wearable antenna design has grossed research interest amongst academicians and researchers due to its versatile application in body area networks for transmitting/receiving signals in sufficiently large areassuch as ICU, trauma centers in hospitals for biomedical applications at ISM (2.45 GHz) frequency range. A wearable antenna is highly flexible in nature making it popular and demanding. What makes it even more suitable for biomedical applications is its simple design methodology and ease of integrationonpatient's dress/clothes for antenna placement in wireless communication. This paper presents a thorough investigation of various antennadesign methodologies to design a flexible wearable antenna that can be mounted on textile material for body-centric wireless communication. The traditional antenna design uses non-flexible substrate materials (such as FR-4, RT duriod, foam, etc..) having medium to high dielectric constant. This results in generation of surface wave losses which reduces antenna transmission capabilities. Flexible wearable antennas, on the contrary, uses ordinary textile materials used as a substrate whose dielectric constant is very low thereby providingreduced surface wave losses. As wearable antennas are mounted on textile fabrics it is possible to use these antennas to implant them on patients’ bodies(inside/outside on the clothes) for transmitting the patients’ body parameters (such as body temperate, heart rate, etc..) measured using various sensors/transducers. In this paper,a thorough review of different types of substrate materialsused for designing flexible wearable antennas is done.

An implanted antenna design for biomedical applications operating in MICS and ISM bands

2015 ◽  
Author(s):  
Ching-Fang Tseng ◽  
Shun-Yu Chang ◽  
Po-Jen Chang ◽  
Wen-Shiush Chen ◽  
Jenn-Sen Lin ◽  
...  
Keyword(s):  
Biomedical Applications ◽  
Antenna Design

scholarly journals E-shape Metamaterials Embedded Implantable Antenna for ISM-band Biomedical Applications

2021 ◽  
Author(s):  
Amaria Saidi ◽  
Keltouma Nouri ◽  
Boubakar Seddik Bouazza ◽  
Kada Becharef ◽  
Abdelhamid Cherifi ◽  
...  
Keyword(s):  
Frequency Band ◽  
Biomedical Applications ◽  
Lower Layer ◽  
Human Tissues ◽  
Layer Model ◽  
Biomedical Implant ◽  
Compact Antenna ◽  
Ism Band ◽  
Implantable Antennas ◽  
Implantable Antenna

Abstract This paper presents a compact antenna based on two different metamaterial resonators, the E-shape resonators and the interdigital resonators suitable for biomedical implant applications. The proposed antennas operate in the industrial, scientific, and medical (ISM) bands in the frequency band of 2.4–2.5 GHz. The integration of metamaterial (MTM) in the design leading to the reduce size of these antennas and gaining enhancement. The overall size of the proposed antennas is\(8\times 7\times 1.27{\mathbf{m}\mathbf{m}}^{3}\). The implantable antennas contain two layers of the substrate; the lower layer comprises the MTM resonators and the upper, superstrate layer. To order to observe the exposure of electromagnetic energy to human tissues, the specific absorption rates (SARs) of the proposed antennas are also calculated in the layer model. The antennas are designed and simulated by the two software simulators CST and HFSS.

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