%A Van Luyen Tong %A Dinh Toai Pham %A Vu Bang Giang Truong %J Vietnam-Japan International Symposium on Antennas and Propagation (VJISAP 2014) %T Nulling and Steering of Beam in Planar Antenna Arrays %C Ha Noi, Viet Nam %D 2014 %P 285-287 %L SisLab1346