频率可重构可穿戴天线的热成像研究

Quoc Hung Dang, S. J. Chen, C. Fumeaux
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引用次数: 2

摘要

利用红外热成像技术研究了频率可重构可穿戴织物天线的热特性。实验考虑了纺织天线的温度与输入功率的关系,以识别天线的热点。研究发现,最高温度点主要在调谐元件位置,这与电磁仿真工具的损耗预测一致。作为调谐元件的变容管的辐射效率与温度之间存在明显的相关性。在21 ~ 521 mW范围内,天线输入功率变化时,调谐频率保持稳定。提出的初步结果表明,红外热成像技术是一种有价值的工具,可用于表征可穿戴设备的热安全裕度,并用于可重构天线技术中的损耗成像。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Thermographic Investigation of Frequency-Reconfigurable Wearable Antennas
The thermal behavior of a frequency-reconfigurable wearable textile antenna is investigated in this paper through in-frared thermography. The relationship between the temperature of the textile antenna and the input power is experimentally considered to identify the antenna hot spots. It is found that, the highest temperature point is mainly at the tuning component location, which is consistent with the loss predictions from electromagnetic simulation tools. A clear correlation is confirmed between the radiation efficiency and temperature of the varactors used as tuning elements. It is also observed that tuning frequency remains stable despite the antenna input power variations within the range from 21 to 521 mW. The presented preliminary results demonstrate the use of infrared thermography as a valuable tool for characterization of thermal safety margins of wearable devices and for imaging of losses in reconfigurable antenna technology.
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