"Takafumi Kai,Jiro Hirokawa,Makoto Ando,Hiroshi Nakano,Yasutake Hirachi","A Cost-Effective Transition between a Microstrip Line and a Post-Wall Waveguide using a Laminated LTCC Substrate in 60-GHz Band",,"IEICE Trans. Electron.",,"Vol. 90","No. 4","pp. 407-410",2007,Apr.
"Takafumi Kai,Jiro Hirokawa,Makoto Ando","Moment Method Analysis of a Plane Wave Generator in an Oversized Rectangular Waveguide",,"IEICE Trans. Commun.",,"Vol. 90","No. 1","pp. 105-113",2007,Jan.
"Miroslav Samardzija,Takafumi Kai,Jiro Hirokawa,Makoto Ando","Single-Layer Waveguide Feed for Uniform Plane TEM-Wave in Oversized-Rectangular Waveguide With Hard-Surface Sidewalls,",,"IEEE Trans. Antennas Propagat.","IEEE","Vol. 54","No. 10","pp. 2813-2819",2006,Oct.
"K. Hashimoto,T. Kai,J. Hirokawa,M. Ando","A Center-Feed Post-Wall Waveguide Parallel Plate Slot Array","IEEE AP-S International Symposium and USNC/URSI National Radio Science Meeting","IEEE AP-S International Symposium and USNC/URSI National Radio Science Meeting",,,,"pp. 3043-3046",2006,July
"M. Samardzija,T. Kai,J. Hirokawa,M. Ando","Terminating Junctions in Single Layer Feed-Waveguide for Excitation of the Dominant Quasi TEM-Wave in Oversized-Rectangular Waveguide","IEEE AP-S International Symposium and USNC/URSI National Radio Science Meeting","IEEE AP-S International Symposium and USNC/URSI National Radio Science Meeting",,,,"pp. 3412-3415",2006,July
"H. T. Tran,T. Kai,J. Hirokawa,Y. Kogami,M. Ando","Evaluation of Conductivity for the under Side Section of Various Types of Copper-Clad Dielectric Substrates Using a Whispering Gallery Mode Resonator","IEEE AP-S International Symposium and USNC/URSI National Radio Science Meeting","IEEE AP-S International Symposium and USNC/URSI National Radio Science Meeting",,,,"pp. 3199-3202",2006,July
"Takafumi KAI,Yusuke KATO,Jiro HIROKAWA,Makoto ANDO,Hiroshi NAKANO,Yasutake HIRACHI","A Coaxial Line to Post-Wall Waveguide Transition for a Cost-Effective Transformer between a RF-Device and a Planar Slot-Array Antenna in 60-GHz Band",,"IEICE Trans. Commun",,"Vol. E89-B","No. 5","pp. 1646-1653",2006,May
"Miroslav Samardzija,Takafumi Kai,Jiro Hirokawa,Makoto Ando","Partially-dielectric-filled Single Layer Feed-waveguide for Excitation of the Dominant Quasi TEM-wave in Oversized-rectangular Waveguide","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",,,,,2006,Mar.
"橋本 紘,甲斐貴文,廣川二郎,安藤 真","π分岐を用いた平行平板スロットアレー用ポスト壁導波路中央給電回路の設計","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",,,,,2006,Mar.
"矢口太郎,甲斐貴文,廣川二郎,安藤 真","ポスト壁導波路平行平板スロットアレーにおける部分並列給電用2分配回路の設計","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",,,,,2006,Mar.
"Huong Tran,甲斐貴文,廣川二郎,古神義則,安藤 真","ウィスパリングギャラリー共振器を用いた低誘電率銅貼り基板の導電率のミリ波帯測定","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",,,,,2006,Mar.
"橋本紘,甲斐貴文,廣川二郎,安藤真","平行平板スロットアレー中央給電用ポスト壁導波回路",,"信学技報",,,,"pp. 13-18",2006,Feb.
"橋本 紘,甲斐貴文,廣川二郎,安藤 真","60GHz帯ポスト壁導波路中央給電平行平板スロットアレーの試作特性","電子情報通信学会ソサイエティ大会",,,,,,2005,Sept.
"Tran Thi Huong,Takafumi Kai,Jiro Hirokawa,Yoshinori Kogami,Makoto Ando","EVALUATION OF CONDUCTIVITY AND COMPLEX PERMITTIVITY OF A COPPER-CLAD DIELECTRIC SUBSTRATE BY USING A WHISPERING GALLERY MODE RESONATOR","INTERNATIONAL SYMPOSIUM ON ANTENNAS AND PROPAGATION (ISAP2005)",,,"Vol. 3",,"pp. 1145-1148",2005,Aug.
"Miroslav Samardzija,Takafumi Kai,Jiro Hirokawa,Makoto Ando","Partially-Dielectric-Filled Oversized Rectangular Waveguide for Suppression of Side Lobes in Slot Arrays","INTERNATIONAL SYMPOSIUM ON ANTENNAS AND PROPAGATION (ISAP2005)",,"Korea Electromagnetic Engineering Society","Vol. 1",,"pp. 89-92",2005,Aug.
"Takafumi Kai,Jiro Hirokawa,Makoto Ando,Hiroshi Nakano,Yasutake Hirachi","WIDEBAND COAXIAL-LINE FEED FOR POST-WALL WAVEGUIDE IN MILLIMETER WAVE BAND","INTERNATIONAL SYMPOSIUM ON ANTENNAS AND PROPAGATION (ISAP2005)","INTERNATIONAL SYMPOSIUM ON ANTENNAS AND  PROPAGATION (ISAP2005)",,"Vol. 3",,"pp. 1137-1140",2005,Aug.
"Takafumi Kai,Jiro Hirokawa,Makoto Ando,Hiroshi Nakano,Yasutake Hirachi","Coaxial-Line Feed for Post-Wall Waveguide in Millimeter Wave Band","IEEE AP-S International Symposium and USNC/URSI National Radio Science Meeting",,,"Vol. 1A",,"pp. 631-634",2005,July
"Takafumi Kai,Jiro Hirokawa,Makoto Ando","Feed through an Aperture to a Post-Wall Waveguide with Step Structure",,"IEICE Trans. Commun.",,"Vol. 88","No. 3","pp. 1298-1302",2005,Mar.
"甲斐貴文,廣川二郎,安藤 真,中野 洋,平地康剛","ミリ波メディアコンバータ用ポスト壁導波路の同軸給電","信学総大","信学会",,,,,2005,Mar.
"橋本 紘,甲斐 貴文,廣川 二郎,安藤 真","平行平板スロットアンテナ用ポスト壁導波路中央給電回路の設計","信学東京支部学生会発表会","信学東京支部",,,,,2005,Mar.
"Takafumi Kai,Jiro Hirokawa,Makoto Ando","Feed through an Aperture to a Post-Wall Waveguide with Step Structure",,"Intl. Symp. Antennas Propagat.",,,,"pp. 185-188",2004,Aug.
"Takafumi Kai,Jiro Hirokawa,Makoto Ando","A Stepped Post-Wall Waveguide with Aperture Interface to Standard Waveguide",,"IEEE AP-S URSI Intl. Symp.",,"Vol. 2",,"pp. 1527-1530",2004,June
"甲斐貴文,廣川二郎,安藤 真","導波管開口給電のためのステップ構造を有するポスト壁導波路",,"信学総大",,,,,2004,Mar.
"Takafumi Kai,Jiro Hirokawa,Makoto Ando","A transformer between a thin post-wall waveguide and a standard metal waveguide via a dielectric substrate insertion with slits etched on it",,"IEICE Trans. Commun.",,"Vol. 87","No. 1","pp. 200-203",2004,Jan.
"Takafumi Kai,Jiro Hirokawa,Makoto Ando","Analysis of a Feeding Structure for TEM Wave Excitation in an Oversized Rectangular Waveguide",,"IEEE AP-S URSI Intl. Symp.",,"Vol. 2",,,2003,June
"Takafumi Kai,Jiro Hirokawa,Makoto Ando","Analysis of a Feeding Structure for TEM Wave Excitation in an Oversized Rectangular Waveguide",,"IEEE AP-S URSI Intl. Symp.",,"Vol. 2",,,2003,June
"甲斐貴文,廣川二郎,安藤 真","平行平板アンテナの側壁近傍の電磁界分布の基礎検討",,"信学総大",,,,,2003,Mar.
"Takafumi Kai,Jiro Hirokawa,Makoto Ando","Transformer between a Thin Post-Wall Waveguide to a Standard Metal Waveguide",,"IEEE AP-S URSI Intl. Symp",,,,,2002,June
"甲斐 貴文,廣川二郎,安藤 真","薄型ポスト壁導波路と標準金属壁導波路との接続構造",,"信学総大",,,,,2002,Mar.
"甲斐貴文,廣川二郎,安藤 真","薄型ポスト壁導波路-標準金属導波管変換器",,"信学東京支部学生会発表会",,,,,2001,Mar.