Koch slot loop antenna for wireless body‐centric communication

In this article, we describe the design of a coplanar waveguide (CPW) fed Koch slot loop antenna with a tuning stub. The antenna is optimized to be used in a wireless body-centric communication. The antenna is designed to operate in the ISM frequency band from 5.725 to 5.875 GHz (ITU-R5.138, 5.150, and 5.280). The study shows properties of the antenna, from the viewpoint of impedance matching, and radiation patterns. The impedance matching at the resonant frequency can be acquired by a tuning stub. The designed CPW-fed slot antenna exhibits a proper polarization, a low-radiation loss, and a weaker dispersion. We experimentally prove that the designed antenna efficiently excites surface waves and creeping waves. © 2014 Wiley Periodicals, Inc. Microwave Opt Technol Lett 56:764–766, 2014