A highly compact dual-band WLAN/UWB monopole antenna. - Hideharu Yoshioka; Lingsheng Yang; Emad Tammam; Kuniaki Yoshitomi (IEICE Electron. Express, 2012)

A directivity enhancement for directional couplers using additional coupled lines. - Hideharu Yoshioka; Akimichi Hirota; Hidenori Ishibashi; Naofumi Yoneda; Moriyasu Miyazaki (IEICE Electron. Express, 2016)

A Compact RF Frontend Module of Active Phased Array Antenna for High SHF Wideband Massive MIMO in 5G. - Hideyuki Nakamizo; Shintaro Shinjo; Koji Tsutsumi; Satoshi Yamaguchi; Hideharu Yoshioka; Akihiro Okazaki; Akinori Taira; Kenichi Tajima (IEICE Trans. Electron., 2017)