Investigation of the impact of magnetic permeability and loss of magnetic composite materials on RFID miniaturization for conformal medical applications
Investigation of the impact of magnetic permeability and loss of magnetic composite materials on RFID miniaturization for conformal medical applications
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DOI：
10.1002/jnm.v22:2
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发表时间：
2009-03
影响因子：
1.6
通讯作者：
G. Stark;M. Mishrikey;F. Robin;H. Jaeckel;C. Hafner;R. Vahldieck;D. Erni
中科院分区：
文献类型：
--
作者：
G. Stark;M. Mishrikey;F. Robin;H. Jaeckel;C. Hafner;R. Vahldieck;D. Erni
柔性磁复合材料的成功实施使对RFID的潜在影响（射频识别）和RF被动式小型化的投资都可以考虑到材料制作的特性和几何设计参数。 RFID UHF带的波长矩形贴片天线（400-930 MHz）。 EM（电磁）软件并使用统计工具进行了优化，并且发现实用磁复合材料的渗透性可以通过大于3的因子来实现小型化，这可能会用于其他大型RF被动剂，例如集成诱导的诱导诱导的诱导还评估了复合材料对微型天线性能的磁损失的影响，并重新制定了材料以满足损失要求。用于480 MHz频带，在平面和保形配置中证明了微型天线的良好性能。
The successful implementation of a flexible magnetic composite material has enabled the investigation of the potential impact on RFID (radio frequency identification) and RF passives miniaturization, considering both material-fabrication properties and geometric design parameters. The benchmarking structure is a short-circuited quarter-wavelength rectangular patch antenna for RFID UHF band (400–930 MHz). The antenna is electromagnetically modeled in HFSS full wave EM (electromagnetic) software and optimized using statistical tools, and it is found that the permeability of a practical magnetic composite can enable miniaturization by a factor larger than 3, something that could be replicated for other large-size RF passives, such as integrated inductors. The impact of the magnetic loss of the composite on the miniaturized antenna performance is also evaluated and the material is reformulated to meet the loss requirements. Then a real RFID tag is implemented for 480 MHz frequency band and good performance of the miniaturized antenna is proven both in planar and conformal configurations. Copyright © 2008 John Wiley & Sons, Ltd.