A miniature implantable microstrip antenna design for dual-band biotelemetry operations

Uras, Erdem; Uçar, Mehmet; Sondaş, Adnan

doi:10.1109/cem.2015.7237439

Cited by 4 publications

(5 citation statements)

References 6 publications

(12 reference statements)

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“…Daha önceki bölümlerde implant haberleşme sistemleri tanıtılmış ve bu tür sistemlerin en önemli bileşenlerinden olan anten tasarımlarının gereksinimlerinden bahsedilmişti. Bu bölümde daha önce bahsi geçen değerlendirmeler ışığında [7]'de tanıtılan MICS/ISM bandı implant antenin modelleme, benzetim ve ölçümlerin yer verilerek sonuçlar tartışılacaktır. Şekil 4'te MICS/ISM bandı uygulamaları için çift-bantlı implant antene ait üstten, yandan ve alttan görüntüleriyle birlikte fiziksel boyutları yer almaktadır.…”

Section: Medikal İmplant Haberleşme Sistemleri Için Mics/ism Bandı I...unclassified

“…Mikroşerit implant antenlerin laboratuvar ortamındaki ölçümlerinde kullanılan gerçek doku ve yapay doku yöntemleri karşılaştırılarak avantaj ve dezavantajları da değerlendirilmektedir. Bu çalışmada, [7]'de geliştirilen MICS/ISM bandı implant anten yapısına ait farklı modelleme yaklaşımlarına ve ilgili modele ait benzetim sonuçlarına yer verilmektedir. Son olarak, antenin fabrikasyon gerçekleştirilerek, laboratuvar ortamında hazırlana deri taklit çözeltisi içerisindeki, in-vitro ölçüm sonuçlarına da yer verilmektedir.…”

Section: Gi̇ri̇ş (Introduction)unclassified

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Medikal implant haberleşme sistemleri için MICS/ISM bandı mikroşerit implant antenlerin sayısal analizi, prototip gerçeklemesi ve in-vitro ölçümü

Uçar

URAS²

2022

Gazi Üniversitesi Mühendislik Mimarlık Fakültesi Dergisi

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 Numerical modeling, analysis and in-vitro measurements of implant antennas  Numerical phantoms and effects on the antenna radiation performance  Preparation of skinmimicking liquids for MICS and ISM bands Figure A. The return loss measurement and radiation pattern simulation results of the MICS/ISM band microstrip implant antenna for medical implant communication systems in the skin-mimicking liquids.Purpose: In this study, it was aimed to perform numerical analysis, design, modeling, and in-vitro measurements of the proposed miniature sized antenna for implant communication systems where physical space is limited, whose standards are determined by international organizations such as FCC, ITU and ETSI.Theory and Methods: Spiral or meander line antenna elements are generally preferred in medical applications where the electrical size in the operating band (i.e., o≈ 75cm, @ 400MHz) is considerably larger than the allocated physical dimensions (~0.01o×0.01o). Accordingly, the radiating elements in the antenna design consists of curved and @-shaped two microstrip lines that effectively use the radiating surface to perform dual-band operation covering MICS and ISM band. The numerical analyses of the implant antenna were performed using CST MWS based on the finite integral method. The human skin simulations of the implant antenna have been performed with numerical phantoms imported into the CST. Since the MICS/ISM implant antenna was projected to be placed in a human arm, the effect of simple skin, part of the arm and the entire arm simulation approaches on the antenna performance was examined to observe whether the skin tissue simulation was compatible with the relevant scenario. Results:The antenna with a compact size of 10.6×10×1.27 mm 3 is fabricated on a RO3210 substrate (r=10.2) and skin-mimicking liquids are also created, depicted in Figure A. As can be seen from Figure A, while some frequency shift in the ISM operating band and differences in S11 levels are observed, the MICS band S11 measurement and simulation results are quite compatible with each other. These discrepancies are thought to be due to the manufacturing /material tolerances during the creating of the antenna and mimicking liquids and the approximation between the measurement and the simulation setup. According to measurement the proposed antenna has bandwidths of 77% and 15%, at the corresponding MICS and ISM bands, respectively. Conclusion:In the paper CST based simulation of the proposed MICS/ISM band implant antenna for medical implant applications are presented. For validation, in-vitro measurements of the miniature sized implant antennas are performed in skin-mimicking liquids. The simulation and measurement results show that the miniature sized antenna with good radiation performance can be a good candidate for MICS/ISM-band implant communication applications when compared to the current literature.

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Section: Medikal İmplant Haberleşme Sistemleri Için Mics/ism Bandı I...unclassified

Section: Gi̇ri̇ş (Introduction)unclassified

Medikal implant haberleşme sistemleri için MICS/ISM bandı mikroşerit implant antenlerin sayısal analizi, prototip gerçeklemesi ve in-vitro ölçümü

Uçar

URAS²

2022

Gazi Üniversitesi Mühendislik Mimarlık Fakültesi Dergisi

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“…The work in Ref. proposed implantable microstrip sandwiched antenna for biomedical telemetry. The antenna had a total volume of 135 mm 3 and resonated at 403.5 MHz and 2.45 GHz.…”

Section: Introductionmentioning

confidence: 99%

Implanted dual‐band circular antenna for biomedical applications

Mohamed

Sharawi

Muqaibel

2018

Micro & Optical Tech Letters

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A compact dual‐band circular patch antenna is designed for implanted biomedical data telemetry systems. Several miniaturization techniques were applied to cover dual bands. The antenna has a radius of 7.5 mm, a thickness of 1.92 mm and a total volume of 340 mm3. The antenna covers MedRadio (401–405 MHz), MICS (402–405 MHz), and ISM bands (433.2–434.8 MHz, 2.4–2.5 GHz). The −10 dB bandwidths are 346–460 MHz (114 MHz) and 2.37–2.63 GHz (260 MHz). The designed antenna was fabricated and its performance was tested inside flesh samples.

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“…The dual band implant antennas were subject of many research efforts [3][4][5][6][7][8][9][10][11][12][13]. Dimensions of the antennas in [3][4][5][6][7][8][9][10][11] are not small enough for implant applications.…”

Section: Introductionmentioning

confidence: 99%

“…Dimensions of the antennas in [3][4][5][6][7][8][9][10][11] are not small enough for implant applications. The antennas in [12][13] are small but they produce high specific absorption rate (SAR) in the body. This contrasting behaviour of size and SAR produced by small antennas is an inherent characteristic of electric type antennas whereas small magnetic type antennas can provide a low electric field in near zone and consequently produce a low SAR [14].…”

Section: Introductionmentioning

confidence: 99%

Dual‐band electrically coupled loop antenna for implant applications

Akbarpour

Chamaani

2017

IET Microwaves, Antennas & Propagation

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Recent low power implant to off‐body communication systems uses both medical implant communication services (MICS) and industrial, scientific, and medical (ISM) frequency bands. In these systems, MICS band and ISM band (2.45 GHz) are dedicated for data transmission and wake‐up signal, respectively. This dual band operation which incredibly extends the life time of battery forces designers to use dual band antennas in both implant and off‐body sides. In this study, a dual band implant electrically coupled loop antenna is proposed. This antenna as dual of planar inverted‐F antenna is a magnetic antenna with inherently low near zone electric field and therefore produces low specific absorption rate (SAR) inside the body. The antenna is miniaturised using a lumped capacitor. In spite of small size of 5 × 5 × 3 mm3, the simulated 1 g average SAR is smaller than reported dual band implant antennas in both frequency bands and makes the proposed antenna a good candidate for implant applications.

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A miniature implantable microstrip antenna design for dual-band biotelemetry operations

Cited by 4 publications

References 6 publications

Medikal implant haberleşme sistemleri için MICS/ISM bandı mikroşerit implant antenlerin sayısal analizi, prototip gerçeklemesi ve in-vitro ölçümü

Medikal implant haberleşme sistemleri için MICS/ISM bandı mikroşerit implant antenlerin sayısal analizi, prototip gerçeklemesi ve in-vitro ölçümü

Implanted dual‐band circular antenna for biomedical applications

Dual‐band electrically coupled loop antenna for implant applications

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