In-body Wideband CB-CPW Fed ISM Band Antenna Analysis for Biomedical Applications

Year 2022, Volume: 11 Issue: 3, 567 - 573, 18.07.2022

Seda Habergoturen Ates Tayfun Okan Nursel Akçam

https://doi.org/10.28948/ngumuh.1059091

Cited By: 1

Abstract

In this study, a wideband antenna operating in the ISM (Industrial Scientific and Medical device) band was designed to be used in biomedical applications. Rogers-RO3210 (ε_r = 10.2) was determined as substrate for 11 x 12 x 0.6 mm³ values which are maximum dimensions of the antenna. A traditional rectangular patch antenna was designed on this substrate, and a saw-shaped etched. The feeding type of the designed antenna was chosen as CB-CPW (Conductor Backed Coplanar Waveguide) and the ground plate reduced. The design and analysis of the antenna were made using the CST-MWS program. The impedance bandwidth (S_11≤-10 dB) of the designed antenna was measured as 0.7152 GHz (1.9736-2.6888 GHz). The reflection coefficient graph of the antenna with a central resonant frequency of 2.368 GHz covers ISM band. The results of the antenna, which was designed for in-body applications, in bent conditions also showed very close performance compared to its results in planar conditions and SAR values were harmless for human body.

Keywords

Biomedical Applications, ISM Band, CB-CPW

Biyomedikal uygulamaları için vücut içi geniş bantlı İD-EDDK beslemeli SBT bant anten analizi

Abstract

Bu çalışmada biyomedikal uygulamalarında kullanılmak üzere SBT (Sınai Bilimsel ve Tıbbi cihaz bandı) bantta çalışan geniş bantlı bir anten tasarlanmıştır. Antenin maksimum boyutlarını gösteren 11 x 12 x 0.6 mm³ değerleri için Rogers-RO3210 (ε_r = 10.2) alltaş olarak belirlenmiştir. Bu alttaşın üzerine geleneksel dikdörtgen yama anten tasarlanıp içerisinden testere şeklinde bir yarık kazınmıştır. Tasarlanan antenin besleme tipi İD-EDDK (İletken Destekli Eş Düzlemsel Dalga Kılavuzu) olarak seçilmiş, toprak plakası azaltılarak kullanılmıştır. Antenin tasarımı ve analizleri CST-MWS programı kullanılarak yapılmıştır. Tasarlanan antenin empedans bant genişliği (S_11≤-10 dB) 0.7152 GHz (1.9736-2.6888 GHz) olarak ölçülmüştür. Merkezi rezonans frekansı 2.368 GHz olan antenin yansıma katsayısı grafiği SBT bandını kapsar. Vücut içi uygulamalara uygun olarak tasarlanan antenin eğimli koşullardaki sonuçları da düzlemsel koşullardaki sonuçlarına kıyasla çok yakın performans göstermektedir ve ÖSO değerleri insan vücudu için zararsızdır.

Keywords

Biyomedikal Uygulamaları, SBT Bant, İD-EDDK

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