Title :
UWB antenna using offset feeding and slotted ground plane for on-body communications
Author :
Sun, Yu Yan ; Liu, L. ; Cheung, S.W. ; Yuk, T.I.
Author_Institution :
Dept. of Electr. & Electron. Eng., Univ. of Hong Kong, Hong Kong, China
Abstract :
An offset-fed Ultra-wideband (UWB) antenna with a slotted ground plane designed for on-body communications is presented in this paper. The antenna consists of a nearly square-shaped radiator, a feed line slightly offset from the middle along the radiator side and a ground plane with several rectangular slots. The offset feed line improves the radiation pattern for on-body communications and the slots on the ground plane improve impedance matching. Simulated and measured results are in good agreement in terms of S11, gain, efficiency and radiation pattern. Measured results show that the antenna can achieve a wide bandwidth from 2.4 to 14.5 GHz, a constant peak gain and high efficiency, and a more omnidirectional radiation pattern in E-plane, making it a good candidate for UWB on-body communications.
Keywords :
UHF antennas; antenna feeds; antenna radiation patterns; biomedical communication; impedance matching; microwave antennas; omnidirectional antennas; ultra wideband antennas; ultra wideband communication; E-plane; UWB antenna; UWB on-body communications; frequency 2.4 GHz to 14.5 GHz; impedance matching; nearly-square-shaped radiator; offset feed line; offset-fed ultrawideband antenna; omnidirectional radiation pattern; radiator side; rectangular slots; slotted ground plane; Antenna measurements; Antenna radiation patterns; Dipole antennas; Slot antennas; Ultra wideband antennas;
Conference_Titel :
Antenna Technology (iWAT), 2013 International Workshop on
Conference_Location :
Karlsruhe
Print_ISBN :
978-1-4673-2830-2
Electronic_ISBN :
978-1-4673-2829-6
DOI :
10.1109/IWAT.2013.6518359
