Remarkable Current Collapse Suppression in GaN HEMTs on Free-standing GaN Substrates. - Yusuke Kumazaki; Keiji Watanabe; Toshihiro Ohki; Junji Kotani; Shiro Ozaki; Yoshitaka Niida; Kozo Makiyama; Yuichi Minoura; Naoya Okamoto; Norikazu Nakamura (BCICTS, 2019)

Recent Progress on High Output Power, High Frequency and Wide Bandwidth GaN Power Amplifiers. - Masaru Sato 001; Yoshitaka Niida; Atsushi Yamada; Junji Kotani; Shiro Ozaki; Toshihiro Ohki; Naoya Okamoto; Norikazu Nakamura (IEICE Trans. Electron., 2021)