Seiji Kumagai

According to our database, Seiji Kumagai authored at least 5 papers between 2021 and 2023.

Collaborative distances:

• Dijkstra number of five.
• Erdős number of four.

2023

Development of Magnetocardiograph without Magnetically Shielded Room Using High-Detectivity TMR Sensors.

Koshi Kurashima, Makoto Kataoka, Takafumi Nakano, Kosuke Fujiwara, Seiichi Kato, Takenobu Nakamura, Masaki Yuzawa, Masanori Masuda, Kakeru Ichimura, Shigeki Okatake, Yoshitaka Moriyasu, Kazuhiro Sugiyama, Mikihiko Oogane, Yasuo Ando, Seiji Kumagai, Hitoshi Matsuzaki, Hidenori Mochizuki

Sensors, January, 2023

80-GHz Bandwidth and High Responsivity of InP Coherent Receiver PIC with Butt-joint waveguide PDs.

Takuya Okimoto, Hideki Yagi, Ken Ashizawa, Kouichiro Yamazaki, Koji Ebihara, Satoru Okamoto, Kazuhiko Horino, Munetaka Kurokawa, Yoshiyuki Sugimoto, Seiji Kumagai, Keiji Tanaka, Masaru Takechi, Mitsuru Ekawa, Yoshihiro Yoneda

Proceedings of the Optical Fiber Communications Conference and Exhibition, 2023

A 19-dB Peaking at 72-GHz and 4.1-Vppd Output Swing SiGe BiCMOS Linear Driver with Dynamic Cascode Output Buffer.

Hiroshi Uemura, Taichi Misawa, Naoki Itabashi, Munetaka Kurokawa, Yoshiyuki Sugimoto, Seiji Kumagai, Masaru Takechi, Keiji Tanaka

Proceedings of the IEEE BiCMOS and Compound Semiconductor Integrated Circuits and Technology Symposium, 2023

A Shunt-Feedback TIA with Common-Base Variable Gain Input Stage for 128-GBaud Coherent Communication.

Seiji Kumagai, Yoshiyuki Sugimoto, Hiroshi Uemura, Munetaka Kurokawa, Naoki Itabashi, Masaru Takechi, Takuya Okimoto, Keiji Tanaka

Proceedings of the IEEE BiCMOS and Compound Semiconductor Integrated Circuits and Technology Symposium, 2023

2021

High Optical Output Power and High-responsivity IC-TROSA for 800 Gbps applications.

Munetaka Kurokawa, Kenichi Nakayama, Masaru Takechi, Yasutaka Mizuno, Taichi Misawa, Eiichi Banno, Hiroshi Uemura, Yoshiyuki Sugimoto, Seiji Kumagai, Takuya Okimoto, Naoya Kono, Tsutomu Ishikawa, Hiroshi Hara, Takatoshi Kato, Keiji Tanaka, Mitsuru Ekawa, Katsumi Uesaka

Proceedings of the European Conference on Optical Communication, 2021