An Over 20-W/mm S-Band InAlGaN/GaN HEMT With SiC/Diamond-Bonded Heat Spreader Ohki, Toshihiro ; Yamada, Atsushi ; Minoura, Yuichi ; Makiyama, Kozo ; Kotani, Junji ; Ozaki, Shiro ; Sato, Masaru ; Okamoto, Naoya ; Joshin, Kazukiyo ; Nakamura, Norikazu Abstract Publication: IEEE Electron Device Letters Pub Date: February 2019 DOI: 10.1109/LED.2018.2884918 Bibcode: 2019IEDL...40..287O