通过使用特征模式方法设计小型双圆极化植入式天线
Zhiwei Song1, Xiaoming Xu2, Yuchao Wang2
1School of Electrical Engineering, Xinjiang University, Wulumqi, 830046, China. suzawer@163.com.
Scientific reports
|July 16, 2024
概括
这项研究介绍了一种小型化的,双频段的,双循环偏振的可植入天线,用于ISM频段. 这种新的设计实现了卓越的性能,并符合安全准则,使其适合医疗应用.
科学领域:
- 电气工程 电气工程
- 生物医学工程 生物医学工程
- 天线理论天线理论
背景情况:
- 植入式天线对于无线医疗设备至关重要.
- 微型化和双带操作是植入式天线的关键挑战.
- 循环极化 (CP) 增强生物环境中的信号完整性.
研究的目的:
- 设计一个微型的,双频段的,双循环极化植入式天线.
- 为了实现工业,科学和医疗 (ISM) 频段内的运行.
- 验证天线的性能,包括尺寸,带宽,效率,增益和安全性.
主要方法:
- 使用特征模式方法来分析电流分布.
- 采用了插槽技术和短路探测器,以实现小型化和双频功能.
- 在辐射斑块和地面平面内内置T形和十字形槽,以实现双 CP.
主要成果:
- 开发了一种超紧的天线,其尺寸为 0.014 × 2 × 0.0027 .
- 在ISM频段 (0.9和2.4 GHz) 中实现双频段运行,其轴比带宽分别为220 MHz和230 MHz,显著3 dB.
- 证明了令人满意的辐射效率,峰值增益为 -29.5 dBi 和 -19.2 dBi,并符合IEEE安全指南.
结论:
- 拟议的天线设计成功地整合了小型化,双频段和双CP功能.
- 特性模式方法在优化天线性能方面被证明是有效的.
- 天线是先进无线植入式医疗设备的有希望的候选者.
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