Highly integrated three-dimensional MMIC technology applied to novel masterslice GaAs- and Si-MMICs. - Tsuneo Tokumitsu; Makoto Hirano; Kimiyoshi Yamasaki; Chikara Yamaguchi; Kenjiro Nishikawa; Masayoshi Aikawa (IEEE J. Solid State Circuits, 1997)

Three-dimensional MMIC technology for low-cost millimeter-wave MMICs. - Kenjiro Nishikawa; Kenji Kamogawa; Belinda Piernas; Masami Tokumitsu; Suehiro Sugitani; Ichihiko Toyoda; Katsuhiko Araki (IEEE J. Solid State Circuits, 2001)

Series-Fed Beam-Scanning Antenna Employing Multi-Stage Configured Microstrip Antennas with Tunable Reactance Devices. - Naoki Honma; Tomohiro Seki; Kenjiro Nishikawa; Koichi Tsunekawa; Kunio Sawaya (IEICE Trans. Commun., 2005)

An Analysis of Multi-Layer Inductors for Miniaturizing of GaAs MMIC. - Yo Yamaguchi; Takana Kaho; Motoharu Sasaki; Kenjiro Nishikawa; Tomohiro Seki; Tadao Nakagawa; Kazuhiro Uehara; Kiyomichi Araki (IEICE Trans. Electron., 2010)

Analyses of Antenna Displacement in Short-Range MIMO Transmission over Millimeter-Wave. - Ken Hiraga; Tomohiro Seki; Kentaro Nishimori; Kenjiro Nishikawa; Ichihiko Toyoda; Kazuhiro Uehara (IEICE Trans. Commun., 2011)

Foreword. - Kenjiro Nishikawa (IEICE Trans. Electron., 2015)

2.4/5.8GHz Dual-band Rectifiers for Aerospace Wireless Sensor and RF Energy Harvester System. - Koshi Hamano; Ayako Suzuki; Kenjiro Nishikawa; Shigeo Kawasaki (RWS, 2019)

Experimental Verification of Excavated Structure on Multi-Layered Substrates for Millimeter-Wave Signal Vertical Transition Using Copper Balls. - Satoshi Yoshida; Kenjiro Nishikawa (IEEE Access, 2020)