"Keiichi Morimoto,Jiro Hirokawa,Makoto Ando","Design of a 180-Degree Single-Layer Divider to control Sidelobe and Crossover Levels in Butler-Matrix Beam-Switching Antenna","Asia Pasific Microwave Conf.","Proc. of  Asia Pasific Microwave Conf.",,,,,2007,Dec.
"Jiro Hirokawa,Keiichi Morimoto,Makoto Ando","Beam-Switching Single-Layer Post-Wall Waveguide Slot Array Controlling Crossover & Sidelobes","Euro. Conf. Antennas Propagat.","Proc. of  Euro. Conf. Antennas Propagat.",,,,,2007,Nov.
"森本圭一,廣川二郎,安藤 真","180度分配器を用いて交差レベルとサイドローブレベルを制御した1層構造ポスト壁導波路バトラーマトリックス",,"信学技報",,,,,2007,Nov.
"K. Morimoto,Jiro Hirokawa,Makoto Ando","SINGLE-LAYER WAVEGUIDE CIRCUIT TO CONTROL SIDELOBE AND CROSSOVER LEVELS IN BUTLER-MATRIX BEAM-SWITCHING ANTENNA","INTERNATIONAL SYMPOSIUM ON ANTENNAS AND PROPAGATION (ISAP2007)","Proc. of  2007 INTERNATIONAL SYMPOSIUM ON ANTENNAS AND PROPAGATION (ISAP2007)",,,,"pp. 1106-1109",2007,Aug.
"森本圭一,廣川二郎,安藤 真","180度分配器を利用したポスト壁導波路バトラーマトリックスの指向性制御","電子情報通信学会総合大会","電子情報通信学会総合大会講演論文集",,,,,2007,Mar.