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International Journal of Antennas and Propagation
Volume 2014, Article ID 151425, 7 pages
http://dx.doi.org/10.1155/2014/151425
Research Article

Planar MIMO Antenna with Slits for WBAN Applications

Department of Electronics and Communications Engineering, Hanyang University, 222 Wangsimni-ro, Seongdong-gu, Seoul 133-791, Republic of Korea

Received 30 April 2014; Revised 25 June 2014; Accepted 2 July 2014; Published 13 July 2014

Academic Editor: Yingsong Li

Copyright © 2014 Do-Gu Kang et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

A planar MIMO antenna with slits for WBAN applications is proposed. The antenna consists of two PIFAs, ground pads, and two slits. By adding ground pads, the antenna size is reduced with improved impedance matching. Through two slits in a ground plane, the isolation characteristic is improved and the resonant frequency can be controlled. To analyze the antenna performance on a human body, the proposed antenna on a human equivalent flat phantom is investigated through simulations. Regardless of the existence of the phantom, the antenna operates in 2.4 GHz ISM band with the isolation higher than 18 dB.