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Junji Wadatsumi
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2020 – today
- 2024
- [j6]Fumihiko Tachibana, Huy Cu Ngo, Go Urakawa, Takashi Toi, Mitsuyuki Ashida, Yuta Tsubouchi, Mai Nozawa, Junji Wadatsumi, Hiroyuki Kobayashi, Jun Deguchi:
A Mueller-Müller CDR with False-Lock-Aware Locking Scheme for a 56-Gb/s ADC-Based PAM4 Transceiver. IEICE Trans. Fundam. Electron. Commun. Comput. Sci. 107(5): 709-718 (2024) - 2022
- [j5]Takashi Toi, Junji Wadatsumi, Hiroyuki Kobayashi, Yutaka Shimizu, Yuji Satoh, Makoto Morimoto, Rui Ito, Mitsuyuki Ashida, Yuta Tsubouchi, Mai Nozawa, Go Urakawa, Jun Deguchi, Ryuichi Fujimoto:
A 25.6-Gb/s Interface Employing PAM-4-Based Four-Channel Multiplexing and Cascaded Clock and Data Recovery Circuits in Ring Topology for High-Bandwidth and Large-Capacity Storage Systems. IEEE J. Solid State Circuits 57(5): 1517-1526 (2022) - [c6]Fumihiko Tachibana, Huy Cu Ngo, Go Urakawa, Takashi Toi, Mitsuyuki Ashida, Yuta Tsubouchi, Mai Nozawa, Junji Wadatsumi, Hiroyuki Kobayashi, Jun Deguchi:
A 56-Gb/s PAM4 Transceiver with False-Lock-Aware Locking Scheme for Mueller-Müller CDR. ESSCIRC 2022: 505-508
2010 – 2019
- 2019
- [j4]Yuta Tsubouchi, Daisuke Miyashita, Takashi Toi, Yuji Satoh, Fumihiko Tachibana, Junji Wadatsumi, Makoto Morimoto, Ryuichi Fujimoto, Jun Deguchi:
A 12.8-Gb/s Daisy Chain-Based Downlink I/F Employing Spectrally Compressed Multi-Band Multiplexing for High-Bandwidth, Large-Capacity Storage Systems. IEEE J. Solid State Circuits 54(4): 1086-1095 (2019) - [c5]Takashi Toi, Junji Wadatsumi, Hiroyuki Kobayashi, Yutaka Shimizu, Yuji Satoh, Makoto Morimoto, Rui Ito, Mitsuyuki Ashida, Yuta Tsubouchi, Mai Nozawa, Go Urakawa, Jun Deguchi:
A 25.6Gb/s Uplink-Downlink Interface Employing PAM-4-Based 4-Channel Multiplexing and Cascaded CDR Circuits in Ring Topology for High-Bandwidth and Large-Capacity Storage Systems. ISSCC 2019: 478-480 - 2018
- [c4]Yuta Tsubouchi, Daisuke Miyashita, Yuji Satoh, Takashi Toi, Fumihiko Tachibana, Makoto Morimoto, Junji Wadatsumi, Jun Deguchi:
A 12.8 GB/S Daisy Chain-Based Downlink I/F Employing Spectrally Compressed Multi-Band Multiplexing for High-Bandwidth and Large-Capacity Storage Systems. VLSI Circuits 2018: 149-150 - 2014
- [j3]Shouhei Kousai, Kohei Onizuka, Junji Wadatsumi, Takashi Yamaguchi, Yasuhiko Kuriyama, Masami Nagaoka:
Polar Antenna Impedance Detection and Tuning for Efficiency Improvement in a 3G/4G CMOS Power Amplifier. IEEE J. Solid State Circuits 49(12): 2902-2914 (2014) - [c3]Konosuke Watanabe, Kenichiro Yoshii, Nobuhiro Kondo, Ken-ichi Maeda, Toshio Fujisawa, Junji Wadatsumi, Daisuke Miyashita, Shouhei Kousai, Yasuo Unekawa, Shinsuke Fujii, Takuma Aoyama, Takayuki Tamura, Atsushi Kunimatsu, Yukihito Oowaki:
19.3 66.3KIOPS-random-read 690MB/s-sequential-read universal Flash storage device controller with unified memory extension. ISSCC 2014: 330-331 - 2011
- [j2]Shouhei Kousai, Daisuke Miyashita, Junji Wadatsumi, Rui Ito, Takahiro Sekiguchi, Mototsugu Hamada, Kenichi Okada:
A Low-Noise and Highly-Linear Transmitter with Envelope Injection Pre-Power Amplifier for Multi-Mode Radio. IEICE Trans. Fundam. Electron. Commun. Comput. Sci. 94-A(2): 592-602 (2011) - 2010
- [j1]Jun Deguchi, Daisuke Miyashita, Yosuke Ogasawara, Gaku Takemura, Masaomi Iwanaga, Kenichi Sami, Rui Ito, Junji Wadatsumi, Yuki Tsuda, Shoko Oda, Shunji Kawaguchi, Nobuyuki Itoh, Mototsugu Hamada:
A Fully Integrated 2 ˟ 1 Dual-Band Direct-Conversion Mobile WiMAX Transceiver With Dual-Mode Fractional Divider and Noise-Shaping Transimpedance Amplifier in 65 nm CMOS. IEEE J. Solid State Circuits 45(12): 2774-2784 (2010) - [c2]Jun Deguchi, Daisuke Miyashita, Yosuke Ogasawara, Gaku Takemura, Masaomi Iwanaga, Kenichi Sami, Rui Ito, Junji Wadatsumi, Yuki Tsuda, Shoko Oda, Shunji Kawaguchi, Nobuyuki Itoh, Mototsugu Hamada:
A fully integrated 2×1 dual-band direct-conversion transceiver with dual-mode fractional divider and noise-shaping TIA for mobile WiMAX SoC in 65nm CMOS. ISSCC 2010: 456-457
2000 – 2009
- 2008
- [c1]Shouhei Kousai, Daisuke Miyashita, Junji Wadatsumi, Asuka Maki, Takahiro Sekiguchi, Rui Ito, Mototsugu Hamada:
A 1.2V 0.2-to-6.3GHz Transceiver with Less Than -29.5dB EVM@-3dBm and a Choke/Coil-Less Pre-Power Amplifier. ISSCC 2008: 214-215
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