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微型植入式圆形偏振天线,具有高ARBW

Rajiv Kumar Nehra¹, Ajay Dureja², Rajkumar Singh Rathore³

¹Dept. of Electronics and Communication Engineering, Bharati Vidyapeeth's College of Engineering, New Delhi, India.

|May 7, 2025

概括

这项研究介绍了一种小型化的,循环偏振的植入天线,用于生物应用,增强了超材料,以提高ISM频段的性能. 该设计实现了宽轴比带宽和与模仿人体组织材料一致的结果.

科学领域:

电磁学电磁学电磁学电磁学
生物医学工程生物医学工程
材料科学材料科学材料科学

背景情况:

植入天线对于无线生物应用至关重要.
在微型天线中实现圆极化和宽带宽存在挑战.
超材料为提高天线性能提供了新的方法.

研究的目的:

设计和评估一个小型化的,循环偏振植入天线用于生物应用,运行在2.44GHzISM频段.
为了研究性能提升,使用分类针和H形元材料来研究性能提升.
通过使用模仿人类皮肤的凝来验证天线的性能,并将模拟与测量进行比较.

主要方法:

一个植入的天线被设计和装载了一个分类针和一个H形的超材料.
分析了共振频率,轴比带宽 (ARBW) 和特定吸收率 (SAR).
实验验证是在2.44 GHz使用模仿皮肤的凝进行的.

主要成果:

排序针降低了共振频率,并通过580 MHz的ARBW引入了循环偏振.
整合H形元材料导致了强大的CP行为与830 MHz的ARBW.
特定吸收率保持在一个合理的值 (952.1 W/KG).
实现了90 MHz (模拟110 MHz) 的试验阻抗带宽.

结论:

拟议的天线展示了小型化,强大的圆极化和适合生物应用的宽带宽.
超材料的整合有效地提高了天线的性能.
模拟和测量结果一致,验证了天线设计.

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