The quest for a miniaturized antenna in the wireless capsule endoscopy application: a review

Gayen, Sreetama; Biswas, Balaka; Karmakar, Ayan

doi:10.1017/s1759078721001458

Cited by 4 publications

(4 citation statements)

References 31 publications

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“…Existing commercial capsules mostly operate at 434 MHz [23]. The carrier frequencies utilized for the wireless capsule applications in the literature range from 20 MHz to 6 GHz covering several ISM, WMTS, and Medical Implants Communications Services (MICS) bands [24]. Generally speaking, a higher carrier frequency allows a wider bandwidth for highspeed data transmissions.…”

Section: B Capsule Endoscopymentioning

confidence: 99%

“…Due to the dimension constraints, different antenna designs have been investigated including loop, dipole, folded dipole, helical, planar inverted-F antenna (PIFA), slot PIFA, microstrip, slot loop, patch antennas, and their combinations. The antennas are located at one end of the capsule or conformed to the inner or outer walls of the capsule [24], [25], [26], [27], [28], [29], [30]. Electrically small fractal antennas [31], [32] provide miniaturization and wideband characteristics have also been demonstrated in research [33], [34], [35].…”

Section: B Capsule Endoscopymentioning

confidence: 99%

“…Electrically small fractal antennas [31], [32] provide miniaturization and wideband characteristics have also been demonstrated in research [33], [34], [35]. A summary of the antenna designs, their key features and performance are listed in Table 1 of [24]. Besides the impedance and operating frequency, antenna radiation patterns that should be closer to omni-directional in order to accommodate capsule orientation variations during travel; a sufficient bandwidth to alleviate impedance detuning as waves pass different parts of the body when the capsule changes locations; and a limit on the SAR should all be considered carefully.…”

Section: B Capsule Endoscopymentioning

confidence: 99%

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Applications of Microwaves in Medicine

Chiao

Lin

et al. 2023

IEEE J. Microw.

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Advances and updates in medical applications utilizing microwave techniques and technologies are reviewed in this paper. The article aims to provide an overview of enablers for microwave medical applications and their recent progress. The emphasis focuses on the applications of microwaves, in the following order, for 1) signal and data communication for implants and wearables through the human body, 2) electromagnetic energy transfer through tissues, 3) noninvasive, remote or in situ physical and biochemical sensing, and 4) therapeutic purposes by changing tissue properties with controlled thermal effects. For signal and data communication and wireless power transfer, implant and wearable applications are discussed in the categories of pacemakers, endoscopic capsules, brain interfaces, intraocular, cardiac and intracranial pressure sensors, neurostimulators, endoluminal implants, artificial retina, smart lenses, and cochlear implants. For noninvasive sensing, remote vital sign radar, biological cell probing, magnetic resonance and microwave imaging, biochemical, blood glucose, hydration and biomarker sensing applications are introduced. For therapeutic uses, the developments of microwave ablation, balloon angioplasty, and hyperthermia applications are reviewed. The scopes of this article mainly concentrate on the research and development efforts in the past 20 years. Recent review articles on specific topics are cited with accomplishment highlights and trends deliberated. At the end of this article, a brief history of the IEEE Microwave Theory and Techniques Society (MTT-S) Biological Effects and Medical Applications committee and the contributions by its members to the promotion and advancement of microwave technologies in medical fields are chronicled.

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Section: B Capsule Endoscopymentioning

confidence: 99%

Section: B Capsule Endoscopymentioning

confidence: 99%

Section: B Capsule Endoscopymentioning

confidence: 99%

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Applications of Microwaves in Medicine

Chiao

Lin

et al. 2023

IEEE J. Microw.

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“…Microstrip antennas and microfabrication techniques allow for the creation of compact and lightweight antennas, making them suitable for endoscopic applications [65].…”

Section: Size Constraintsmentioning

confidence: 99%

Advances in Antenna-Based Techniques for Detection and Monitoring of Critical Chronic Diseases: A Comprehensive Review

Chishti,

Aziz,

Qureshi

et al. 2023

IEEE Access

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Several research articles are available in the literature regarding the design of antennas, but hardly (to the best of authors' knowledge) few papers covered the antennas that are designed for the detection, diagnostics, and monitoring of various diseases. There is a need for a research article in which the design and performance of such significant antennas should be compared and highlighted based on various available design techniques to enhance performance parameters that include efficiency, bandwidth, size and appropriate bio-compatible material used to transmit data from the human body efficiently. Antennas are essential in biomedical applications for wireless communication, miniaturization, integration, implantable devices, diagnostic imaging, biotelemetry, and biosensing. They enable efficient and reliable wireless connectivity, facilitating remote monitoring, improving patient care, and advancing medical research. Designing biomedical antennas presents several challenges, including miniaturization and integration into compact devices, ensuring biocompatibility with the human body, conforming to biological structures, mitigating electromagnetic interference (EMI), accounting for signal attenuation and propagation in the body, optimizing power efficiency, and ensuring compliance with regulatory standards. Overcoming these challenges requires expertise in antenna design, biocompatibility, electromagnetic modelling, and collaboration between disciplines. Therefore, a detailed review is required so that any scholar who wishes to excel in this field may read this review to understand future directions better and work already done for the design of biomedical antennas. This review comprises a comparison of several significant biomedical antenna design techniques used for the detection, diagnosis and monitoring of various diseases, which can be helpful for the medical community for the detection of various diseases, including skin cancer, breast cancer, lungs cancer, endoscopy, brain tumor and glucose level detection. The various features of biomedical antennas are thoroughly investigated to provide performance metrics of the antennas designed to diagnose various diseases. The advantage of this study is the understanding of different types of antennas for various diseases. This study also allows realizing appropriate bio-compatible materials and flexible materials for biomedical antenna design, the effect of Specific Absorption Rate (SAR) on human/animal body and finally, the tables provide the antenna performance in terms of gain, bandwidth, and directivity with respect to antenna size and type of substrate material used for each disease. These biomedical antennas have several applications for diagnosis, early-stage cancer detection and, in some cases providing enough energy to cure the cancer cells in the human/animal body. Moreover, the implementation of Machine learning algorithms for the early detection of tumor for the above-mentioned diseases is also discussed. INDEX TERMSbiomedical antenna, breast cancer,...

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