Title :
A switchable four-sector shaped-beam antenna for MM-wave wireless LANs
Author :
Murakami, Y. ; Kijima, T. ; Kato, A. ; Manabe, T. ; Ihara, T. ; Fujise, M.
Author_Institution :
Res. & Dev. Center, Toshiba Corp., Kawasaki, Japan
Abstract :
The paper presents a four-sector shaped-beam antenna suitable for base station (BS) antennas in the 60 GHz band. This antenna has a plateau configuration whose four side walls have four linearly arranged patch array antenna, respectively. Each trapezoidal facet consisting of four linearly arranged patch array antennas excites a shaped beam in the elevation plane in order to cover from a small depression angle to the nadir, considering the radiation pattern of the developed remote terminal antennas. In order to suppress unwanted multipath delayed waves, they excite right-handed circularly polarised waves.
Keywords :
antenna radiation patterns; electromagnetic wave polarisation; linear antenna arrays; microstrip antenna arrays; millimetre wave antenna arrays; multibeam antennas; shaped beam antennas; wireless LAN; 60 GHz; EHF; MM-wave wireless LAN; base station antennas; depression angle; elevation plane; linearly arranged patch array antenna; multipath delayed waves suppression; nadir; plateau configuration; radiation pattern; remote terminal antennas; right-handed circularly polarised waves; switchable four-sector shaped-beam antenna; trapezoidal facet; Antenna arrays; Antenna feeds; Humans; Laboratories; Linear antenna arrays; Local area networks; Polarization; Propagation delay; Shadow mapping; Wireless LAN;
Conference_Titel :
Antennas and Propagation Society International Symposium, 1998. IEEE
Conference_Location :
Atlanta, GA, USA
Print_ISBN :
0-7803-4478-2
DOI :
10.1109/APS.1998.701743
