Title :
A switchable multi-sector antenna for indoor wireless LAN systems in the 60-GHz band
Author :
Murakami, Yasushi ; Kijima, Toru ; Iwasaki, Hisao ; Ihara, Toshio ; Manabe, Takeshi ; Iigusa, Kyoichi
Author_Institution :
Commun. & Inf. Syst. Res. Labs., Toshiba Corp., Kawasaki, Japan
fDate :
6/1/1998 12:00:00 AM
Abstract :
A switchable multi-sector antenna for indoor wireless local-area network (LAN) systems in the 60-GHz band has been proposed. The antenna has a pyramidal configuration. Each isosceles-triangular surface of the pyramid has been inclined 30° from the vertical axis in order to cover an appropriate elevation angle range. This antenna excites a right-handed circularly polarized wave to suppress unwanted multipath delayed waves. The low-loss curved microstrip-line feeding has been introduced at the junction between antenna feed lines and monolithic microwave integrated circuit (MMIC) amplifiers at the bottoms of the pyramid. Using this antenna, a terminal receiver for indoor wireless LAN systems in the 60-GHz band has been developed
Keywords :
antenna feeds; antenna radiation patterns; electromagnetic wave polarisation; indoor radio; microstrip antennas; microwave links; millimetre wave antennas; wireless LAN; 60 GHz; EHF; MM-wave antenna; MMIC amplifiers; indoor wireless LAN systems; low-loss curved microstrip-line; microstrip-line feed; pyramidal configuration; right-handed circularly polarized wave; switchable multi-sector antenna; terminal receiver; wireless local-area network; Antenna feeds; Local area networks; MMICs; Microstrip antennas; Microwave antennas; Microwave integrated circuits; Monolithic integrated circuits; Polarization; Propagation delay; Wireless LAN;
Journal_Title :
Microwave Theory and Techniques, IEEE Transactions on
