Design and Optimization of Millimeter-Wave Microstrip-to-Waveguide Transition Operating over Broad Frequency Bandwidth. - Yusuke Deguchi; Kunio Sakakibara; Nobuyoshi Kikuma; Hiroshi Hirayama (IEICE Trans. Electron., 2007)

Broadband Planar Antenna Combining Monopole Element with Electromagnetic Bandgap. - Kazuoki Matsugatani; Kunio Sakakibara; Nobuyoshi Kikuma; Hiroshi Hirayama (IEICE Trans. Electron., 2008)

A consideration of electro-magnetic-resonant coupling mode in wireless power transmission. - Hiroshi Hirayama; Toshiyuki Ozawa; Yosuke Hiraiwa; Nobuyoshi Kikuma; Kunio Sakakibara (IEICE Electron. Express, 2009)

Microstrip patch array antenna coupled with parasitic patches using one dimensional EBG structures. - Kazuoki Matsugatani; Kunio Sakakibara; Nobuyoshi Kikuma; Hiroshi Hirayama (IEICE Electron. Express, 2009)

A New Scheme to Avoid Null Zone for HF-Band RFID with Diversity Combining of Loop Antennas. - Hiroshi Hirayama; Nobuyoshi Kikuma; Kunio Sakakibara (IEICE Trans. Commun., 2010)

An Estimation Method of Poynting Vector with Near-Magnetic-Field Measurement. - Hiroshi Hirayama; Nobuyoshi Kikuma; Kunio Sakakibara (IEICE Trans. Electron., 2010)

Narrow-Wall-Slotted Hollow-Waveguide Array Antenna Using Partially Parallel Feeding System in Millimeter-Wave Band. - Yuki Ikeno; Kunio Sakakibara; Nobuyoshi Kikuma; Hiroshi Hirayama (IEICE Trans. Commun., 2010)

Control of Power Dividing Ratio in Four-Way Power Divider for Feeding Microstrip Comb-Line Antenna. - Morihiko Nanjo; Kunio Sakakibara; Nobuyoshi Kikuma; Hiroshi Hirayama (IEICE Trans. Commun., 2010)

Narrow-Wall-Connected Microstrip-to-Waveguide Transition Using V-Shaped Patch Element in Millimeter-Wave Band. - Kazuyuki Seo; Kunio Sakakibara; Nobuyoshi Kikuma (IEICE Trans. Commun., 2010)

Channel Capacity Improvement in Short-Range MIMO Using Side and Back Reflectors. - Hiroshi Hirayama; Gen Matsui; Nobuyoshi Kikuma; Kunio Sakakibara (IEICE Trans. Commun., 2011)

Transition from Waveguide to Two Microstrip Lines with Slot Radiators in the Millimeter-Wave Band. - Kazuyuki Seo; Kunio Sakakibara; Nobuyoshi Kikuma (IEICE Trans. Commun., 2011)

Broadband Millimeter-Wave Microstrip Comb-Line Antenna Using Corporate Feeding System with Center-Connecting. - Atsushi Kunita; Kunio Sakakibara; Kazuyuki Seo; Nobuyoshi Kikuma; Hiroshi Hirayama (IEICE Trans. Commun., 2012)

Millimeter-Wave Microstrip-Line-Fed Broadband Waveguide Aperture Antennas. - Shintaro Yano; Kunio Sakakibara; Nobuyoshi Kikuma; Hiroshi Hirayama (IEICE Trans. Commun., 2012)

Automated Creation of Beamformer-Based Optimum DOA Estimation Algorithm Using Genetic Algorithm. - Shunsuke Yoshimura; Hiroshi Hirayama; Nobuyoshi Kikuma; Kunio Sakakibara (IEICE Trans. Commun., 2012)

An Investigation on Self-Resonant and Capacitor-Loaded Helical Antennas for Coupled-Resonant Wireless Power Transfer. - Hiroshi Hirayama; Tomohiro Amano; Nobuyoshi Kikuma; Kunio Sakakibara (IEICE Trans. Commun., 2013)

Bandwidth Extension of Planar Microstrip-to-Waveguide Transition by Controlling Transmission Modes Through Via-Hole Positioning in Millimeter-Wave Band. - Nguyen Thanh Tuan; Kunio Sakakibara; Nobuyoshi Kikuma (IEEE Access, 2019)

Performance Analysis of Block MSN Algorithm with Pseudo-Noise Control in Multi-User MIMO System. - Nobuyoshi Kikuma; Kousuke Yonezu; Kunio Sakakibara (IEICE Trans. Commun., 2019)

A 76-Gbit/s 265-GHz CMOS Receiver. - Shinsuke Hara; Ruibing Dong; Sangyeop Lee; Kyoya Takano; Naoya Toshida; Satoru Tanoi; Tatsuo Hagino; Mohamed H. Mubarak; Norihiko Sekine; Issei Watanabe; Akifumi Kasamatsu; Kunio Sakakibara; et al. (A-SSCC, 2021)

A 76-Gbit/s 265-GHz CMOS Receiver With WR-3.4 Waveguide Interface. - Shinsuke Hara; Ruibing Dong; Sangyeop Lee; Kyoya Takano; Naoya Toshida; Akifumi Kasamatsu; Kunio Sakakibara; Takeshi Yoshida; Shuhei Amakawa; Minoru Fujishima (IEEE J. Solid State Circuits, 2022)

A 2D Beam-Steerable 252-285-GHz 25.8-Gbit/s CMOS Receiver Module. - Takeshi Yoshida; Shinsuke Hara; Tatsuo Hagino; Mohamed H. Mubarak; Akifumi Kasamatsu; Kyoya Takano; Yoshiki Sugimoto; Kunio Sakakibara; Shuhei Amakawa; Minoru Fujishima (A-SSCC, 2023)

Reduction of Surface Reflection on Dielectric Lens Antenna by Matching Periodic Square-Pillars in 300-GHz Band. - Bazilah Baharom; Ryota Ishihara; Yoshiki Sugimoto; Kunio Sakakibara; Nobuyoshi Kikuma; Takayuki Arai; Takayoshi Suganuma; Tomohiro Saito (IEEE Access, 2023)

A 300-GHz-Band 36-Gb/s Scalable 2x2 2D Phased-Array CMOS Receiver. - Satoshi Tanaka; Shinsuke Hara; Kyoya Takano; Akifumi Kasamatsu; Yoshiki Sugimoto; Kunio Sakakibara; Shunichi Kubo; Takeshi Yoshida; Shuhei Amakawa; Minoru Fujishima (A-SSCC, 2024)

Sub-THz Multi-beam Antennas for Virtualized Terminal Technology. - Yoshiki Sugimoto; Kunio Sakakibara; Takeyuki Tsuchida; Takuya Sugiyama; Shumpei Kishi; Azuki Iwamoto; Kenta Nishimura; Takanori Narita; Motoko Sakamoto; Nobuyoshi Kikuma; Satoshi Ito; Yoshio Kunisawa; et al. (EuCNC/6G Summit, 2024)

25.9-Gb/s 259-GHz Phased-Array CMOS Receiver Module with 28° Steering Range. - Shinsuke Hara; Mohamed H. Mubarak; Akifumi Kasamatsu; Yoshiki Sugimoto; Kunio Sakakibara; Kyoya Takano; Takeshi Yoshida; Shuhei Amakawa; Minoru Fujishima (RWS, 2024)

Broadband Waveguide-to-Differential-Line Transition in Multi-Layer Substrates With Triple Stacked Patch in 300 GHz Band. - Chatchai Chokchai; Yoshiki Sugimoto; Kunio Sakakibara; Henry Abu Diawuo; Nobuyoshi Kikuma (IEEE Access, 2024)

Best Feed Positions and Radiation Patterns of Typical Multibeam Dielectric Lens Antenna. - M. Muhsin; Kamilia Kamardin; Yoshihide Yamada; Yoshiki Sugimoto; Kunio Sakakibara (IEEE Access, 2024)

Shaped Lens Antenna for 5G Mobile With Wide Angle Multi-Beam and Optimum Feed Position. - Farizah Ansarudin; Nurul Huda Abd Rahman; Yoshihide Yamada; Norsiha Zainudin; M. Muhsin; Kamilia Kamardin; Yoshiki Sugimoto; Kunio Sakakibara; Norbahiah Misran (IEEE Access, 2025)

Mechanical/Electrical Hybrid Two-Dimensional Beam Scanning Cylindrical Dielectric Lens Antenna Fed by a Phased Array Primary Radiator. - Yoshiki Sugimoto; Kunio Sakakibara; Tuan Hung Nguyen; Takanori Narita; Nobuyoshi Kikuma (IEEE Access, 2025)