- Volume 16 Issue 4
The development of efficient wearable antennas is required to implement short range body-centric wireless communication links for various internet of thing applications. We present simulation and measurement results of conductive-fiber-based wearable antennas which can comfortably fabricated directly on usual clothing materials. The proposed antenna is a form of a rectangular patch antenna designed by weaving conductive fibers on a felt substrate. A full-wave electromagnetic simulation tool is used to investigate the antenna performance such as antenna impedance, resonant frequency, and radiation efficiency. Parametric studies show that the radiation efficiency increases from 67.5% to 70.4% by widening the gap between conductive fibers from 0.25mm to 3mm. This implies a wearable antenna with good radiation efficiency can be designed despite of less portion of conductive fibers on the antenna. The simulation results are also verified by measured results with fabricated antennas.
Antenna;conductive fiber;radiation efficiency;wearable antenna
- Transparency Market Research, "Wearable Technology Market - Global Scenario, Trends, Industry Analysis, Size, Share and Forecast, 2012-2018", 2013.
- L. Zhang, Z. Wang, and J. L. Volakis, "Textile antennas and sensors for body-worn applications," IEEE Antennas Wirel. Propag. Lett. vol. 11, 2012, pp. 1690-1693. DOI: http://dx.doi.org/10.1109/LAWP.2013.2239956 https://doi.org/10.1109/LAWP.2013.2239956
- Z. Wang, L. Zhang, Y. Bayram, and J. L. Volakis, "Embroidered conductive fibers on polymer composite for conformal antennas," IEEE Trans. Antennas Propag., vol. 60, no. 9, 2012, pp. 4141-4147. DOI: http://dx.doi.org/10.1109/TAP.2012.2207055 https://doi.org/10.1109/TAP.2012.2207055
- M. A. R. Osman, M. K. A. Rahim, N. A. Samsuri, H. A. M. Salim, and M. F. Ali, "Embroidered fully textile wearable antenna for medical monitoring applications," Progr. in Electro. Re., vol. 117, 2011, pp. 321-337. DOI: http://dx.doi.org/10.2528/PIER11041208 https://doi.org/10.2528/PIER11041208
- K. Koski, A. Vena, L. Sydanheimo, L. Ukkonen, and Y. R. Samii, "Design and implementation of electro-textile ground planes for wearable UHF RFID patch tag antennas," IEEE Antennas Wirel. Propag. Lett., vol. 12, 2013. DOI: http://dx.doi.org/10.1109/LAWP.2013.2276007 https://doi.org/10.1109/LAWP.2013.2276007
- A. Tronquo, H. Rogier, C. Hertleer, and L. V. Langenhove, "Applying textile materials for the design of antennas for wireless body area networks," in Proc. IEEE Conf. Antennas Prop., 2006, pp. 1-5. DOI: http://dx.doi.org/10.1109/EUCAP.2006.4584573
- M. Klemm, I. Locher, and G. Troster, "A novel circularly polarized textile antenna for wearable applications," in IEEE Proc. Wirel. Tech. Conf. Amsterdam, vol. 1, Oct. 2004, pp. 285-288.
- ANSYS HFSS: http://www.ansys.com/Product s/Simulat ion+Technology/Electromagnetics/High-Performance+Electronic+Design/ANSYS+HFSS
- Syscom Advanced Materials, Inc.: http://www.metalcladfibers.com/liberator-fiber
- C. A. Balanis, "Antenna theory analysis and design," Microstrip Antennas, 3rd ed. John Wiley & Sons, 2005.
- S. Keller, A. Zaghloul, V. Shanov, M. Schulz, and D. Mast, "Design considerations for a meshed carbon nanotube thread patch antenna," 2013, pp. 1. DOI: http://dx.doi.org/10.1109/LAWP.2013.2282176 https://doi.org/10.1109/LAWP.2013.2282176
- G .Clasen, R. Langley, "Meshed patch antennas," IEEE Trans. Antennas Propag., vol. 52, no. 6, 2004, pp. 1412-1416. DOI: http://dx.doi.org/10.1109/TAP.2004.830251 https://doi.org/10.1109/TAP.2004.830251