Title :
Using EBG to Improve Antenna Efficiency in Proximity to the Human Body
Author :
Duan, Zhangfeng ; Linton, D. ; Scanlon, William ; Conway, G.
Author_Institution :
Inst. of Electron., Queen´s Univ. of Belfast, Belfast
Abstract :
This paper presents a 2.45 GHz patch antenna over an EBG substrate with the objective of higher radiation efficiency and compact operation in close proximity to a lossy medium, both of which are critical for body worn antennas. To achieve compact size, several sizes of EBG are included and the individual antenna efficiency and radiation pattern are studied. From these results, the EBG substrate demonstrates great improvement of the antenna efficiency but its size has a considerable effect on efficiency when the antenna is used in close proximity to the human body.
Keywords :
UHF antennas; antenna radiation patterns; microstrip antennas; mobile antennas; photonic band gap; EBG; antenna efficiency; frequency 2.45 GHz; human body; lossy medium; patch antenna; radiation pattern;
Conference_Titel :
Wideband, Multiband Antennas and Arrays for Defence or Civil Applications, 2008 Institution of Engineering and Technology Seminar on
Conference_Location :
London
Print_ISBN :
978-0-86341-903-4
