DESIGN OF SPIRAL CIRCULAR COILS IN WET AND DRY TISSUE FOR BIO-IMPLANTED MICRO-SYSTEM APPLICATIONS
DESIGN OF SPIRAL CIRCULAR COILS IN WET AND DRY TISSUE FOR BIO-IMPLANTED MICRO-SYSTEM APPLICATIONS
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用于生物植入微系统应用的湿和干组织中的螺旋圆形线圈的设计
DOI：
10.2528/pierm13052707
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发表时间：
2013
影响因子：
1
通讯作者：
A. Hussain
中科院分区：
文献类型：
--
作者：
Saad M. Abbas;M. Hannan;S. Samad;A. Hussain
本文介绍了工作频率为13.56MHz的小型生物植入式螺旋线圈（饼形线圈）的设计。外部线圈和内部线圈的几何尺寸分别为dout = 56 mm，din = 10 mm和dout = 11：6 mm，din = 5 mm，其中电气性能通过商用场解算器高频结构模拟器（HFSS 13.0）进行验证，该模拟器采用有限元法（FEM）技术。提出的线圈的数学模型的开发。该模拟是基于空气中的发育模型和在干燥和湿润皮肤的人体生物组织中的深度6mm处进行的。结果表明，在空气中，外线圈和内线圈的最大近场增益分别为54.15dB和53.30dB。与皮肤接触的最大增益分别为49.80dB和48.95dB。内部线圈在湿组织和干组织中6mm深度处的最大增益分别为41.80dB和41.40dB。而在湿皮肤和干皮肤上的外线圈辐射效率分别为空气的92%和90%。在湿皮肤和干皮肤上的线圈内辐射效率分别为空气的78.4%和77.6%。在这项研究中，使用SEMCAD 16.4软件研究了内部线圈的比吸收率（SAR）和辐射功率结果。SAR和功率损耗研究表明，设计的植入线圈对潮湿和干燥皮肤的影响可以忽略不计。
This paper deals with the design of small-sized bio- implanted spiral circular coils (pancake) with an operating frequency of 13.56MHz. The external and internal coils' geometric dimensions are dout = 56mm, din = 10mm and dout = 11:6mm, din = 5mm, respectively, in which the electrical performance is verifled through the commercial fleld solver High Frequency Structural Simulator (HFSS 13.0), which employs the flnite-element method (FEM) technique. Mathematical models for the proposed coils are developed. The simulation is performed-based on the developmental model in the air and at depths 6mm in a human biological tissue of dry and wet skin. The results demonstrate that the external and internal coils have maximum near-fleld gains of 54.15dB and 53.30dB in air. The maximum gains of the external coil contacted the wet and dry skin are 49.80dB and 48.95dB, respectively. The maximum gains of the internal coil at depths of 6mm in the wet and dry tissue are 41.80dB and 41.40dB, respectively. However, the external coil radiation e-ciencies on wet- and dry-skin are 92% and 90%, respectively, compared with that on air. The internal coil radiation e-ciencies on wet- and dry-skin are 78.4% and 77.6%, respectively, compared with that on air. In this study, the speciflc absorption rate (SAR) and radiated power results of the internal coil are investigated using SEMCAD 16.4 software. The SAR and power loss studies show that the designed implanted coil has a negligible efiect on the wet and dry skin and can be ignored.
DOI：
10.1016/b978-075063266-9/50010-x
发表时间：
2021-06
期刊：
Finite Element Analysis
影响因子：
--
作者：
G. Nikishkov
通讯作者：
G. Nikishkov