期刊
IEEE ANTENNAS AND WIRELESS PROPAGATION LETTERS
卷 12, 期 -, 页码 964-967出版社
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/LAWP.2013.2276007
关键词
Electro-textile; embroidery; power pattern; reflectometry; radio frequency identification (RFID); sheet resistance; wearable
资金
- Academy of Finland
- Centennial Foundation of Finnish Technology Industries
- TUT Foundation
- Finnish Funding Agency for Technology and Innovation (TEKES)
Localization, wireless monitoring, and emerging body-centric wireless systems demand low-cost and low-power devices that are efficient, maintenance-free, and comfortable to wear. Patch-type UHF radio frequency identification (RFID) tag antennas realized using electro-textiles are promising candidates for this purpose. In this letter, we design a patch-type tag antenna operating at 900 MHz and investigate how different types of ground planes using electro-textiles affect the antenna performance. Various conductive fabrics and embroidery structures are considered. We demonstrate that depending on the ground plane structure and density, it is possible to influence the tag impedance behavior and radiation characteristics. Furthermore, wireless reflectometry measurements are conducted to characterize the sheet resistance for the investigated electro-textiles. We then use the sheet resistance in modeling the conductive fabric ground planes in a full-wave electromagnetic solver. Our results contribute to deeper understanding of the complex electro-textiles structures and guidelines for future practical wearable antenna designs.
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