A low profile wideband unidirectional antenna for wearable device

In this paper, a wideband wristband antenna for wearable device, characterized by low profile and unidirectional radiation property, is proposed. First, the Theory of Characteristic Mode (TCM) is employed to expound the operation principle of the generation of unidirectional radiation. Then, an appropriate feeding structure is chosen to excite the desired modes. As a result, the corresponding modes are excited and the unidirectional radiation is obtained. Moreover, the desired cellular operation bands (from 1710 MHz to 2155 MHz) are achieved. The total efficiency accompanied with flatness feature are at the levels of -1.5 dB and -6.5 dB in free space and with phantom respectively.

Authors:
Chen J., Berg M., Pärssinen A.

Publication type:
A4 Article in conference proceedings

Place of publication:
Proceedings of the European Conference on Antennas and Propagation (EUCAP2019), 31 March-5 April 2019, Krakow, Poland

Keywords:
Theory of Characteristic Mode, wearable antenna, wideband antenna

Published:
20 June 2019

Full citation:
J. Chen, M. Berg and A. Pärssinen, “A low profile wideband unidirectional antenna for wearable device,” 2019 13th European Conference on Antennas and Propagation (EuCAP), Krakow, Poland, 2019, pp. 1-5. https://ieeexplore.ieee.org/abstract/document/8739279

DOI:
https://ieeexplore.ieee.org/abstract/document/8739279

Read the publication here:
http://urn.fi/urn:nbn:fi-fe2019100831932