Title :
Propeller-shaped ultra-wideband planar adaptive antenna
Author :
Takemoto, Erika ; Hirose, Akira
Author_Institution :
Dept. of Bioeng., Univ. of Tokyo, Tokyo, Japan
fDate :
Oct. 29 2012-Nov. 2 2012
Abstract :
We investigate adaptive antennas for ultra wideband (UWB) systems [1] working at around 310GHz to enhance the efficiency of frequency use and avoid serious fading caused by complicated interference in indoor environment. Because the fading happens at points where the electromagnetic-wave cancels out almost completely, the problem is often solved by changing the radiation direction roughly with a modest directivity with, e.g., a forward-back (F/B) ratio of several dB [2].
Keywords :
planar antennas; ultra wideband antennas; UWB system; directivity; electromagnetic wave; forward back ratio; frequency use; indoor environment interference; propeller shaped ultra wideband planar adaptive antenna; radiation direction; ultra wideband system; Adaptive arrays; Antenna radiation patterns; Impedance matching; Reflection; Ultra wideband antennas;
Conference_Titel :
Antennas and Propagation (ISAP), 2012 International Symposium on
Conference_Location :
Nagoys
Print_ISBN :
978-1-4673-1001-7
