A 12-ps-resolution digital variable-delay macro cell on GaAs 100 K-gates gate array using a meshed air bridge structure. - Akira Ohta; Norio Higashisaka; Tetsuya Heima; Takayuki Hisaka; Hirofumi Nakano; Ryuji Ohmura; Tadashi Takagi; Noriyuki Tanino (IEEE J. Solid State Circuits, 1999)

A 2.4-GHz-band 1.8-V operation single-chip Si-CMOS T/R-MMIC front-end with a low insertion loss switch. - Kazuya Yamamoto; Tetsuya Heima; Akihiko Furukawa; Masayoshi Ono; Yasushi Hashizume; Hiroshi Komurasaki; Shigenobu Maeda; Hisayasu Sato; Naoyuki Kato (IEEE J. Solid State Circuits, 2001)

2.4-GHz-Band CMOS RF Front-End Building Blocks at a 1.8-V Supply. - Hiroshi Komurasaki; Kazuya Yamamoto; Hideyuki Wakada; Tetsuya Heima; Akihiko Furukawa; Hisayasu Sato; Takahiro Miki; Naoyuki Kato; Akira Hyogo; Keitaro Sekine (IEICE Trans. Fundam. Electron. Commun. Comput. Sci., 2002)

A 1.8-V operation RF CMOS transceiver for 2.4-GHz-band GFSK applications. - Hiroshi Komurasaki; Tomohiro Sano; Tetsuya Heima; Kazuya Yamamoto; Hideyuki Wakada; Ikuo Yasui; Masayoshi Ono; Toshitsugu Miwa; Hisayasu Sato; Takahiro Miki; Naoyuki Kato (IEEE J. Solid State Circuits, 2003)

A digital PLL with two-step closed-locking for multi-mode/multi-band SAW-less transmitter. - Keisuke Ueda; Toshiya Uozumi; Ryo Endo; Takahiro Nakamura; Tetsuya Heima; Hisayasu Sato (CICC, 2012)

A Multiband LTE SAW-Less CMOS Transmitter with Source-Follower-Driven Passive Mixers, Envelope-Tracked RF-PGAs, and Marchand Baluns. - Takao Kihara; Tomohiro Sano; Masakazu Mizokami; Yoshikazu Furuta; Mitsuhiko Hokazono; Takaya Maruyama; Tetsuya Heima; Hisayasu Sato (IEICE Trans. Electron., 2013)