A Wearable Wideband Circularly Polarized Textile Antenna for Effective Power Transmission on a Wirelessly-Powered Sensor Platform

作者：Lui K W^*; Murphy O H; Toumazou C

来源：IEEE Transactions on Antennas and Propagation, 2013, 61(7): 3873-3876.

DOI：10.1109/TAP.2013.2255094

• Broadband antenna
• circular polarization
• energy harvesting
• ISM band
• textile antennas
• wireless temperature sensor

In this communication, the simulation and experimental results of a novel wideband wearable circularly polarized textile antenna for low-power transmission in the 2.45 GHz ISM band are presented. The wide impedance and axial ratio bandwidths make it perfect for low microwave power transmission to a wearable sensor system. The antenna is flexible, robust and light weight so that it can be easily integrated into clothes. It is shown that the circularly polarized textile antenna has a 3-dB axial ratio bandwidth of 564 MHz (23%) and a -10 dB impedance bandwidth of 1086 MHz (44%) on a human body with the maximum gain of 4.9 dBic. Lastly, the textile antenna is employed on the battery-less temperature sensor system on a human arm to demonstrate the effective power transmission over a metre distance.

• 出版日期2013-7