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Optical semiconductor module |
— |
2025-06-10 |
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Optical semiconductor module |
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Optical receiver and transimpedance amplifier circuit |
Keiji Tanaka |
2023-02-28 |
| 11437962 |
Differential amplifier circuit having variable gain |
Keiji Tanaka |
2022-09-06 |
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Transimpedance amplifier circuit |
Keiji Tanaka |
2022-06-14 |
| 10644653 |
Amplifier and optical transmitter using the same |
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2020-05-05 |
| 10608599 |
Variable gain circuit and transimpedance amplifier using the same |
Yoshiyuki Sugimoto |
2020-03-31 |
| 10574027 |
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Keiji Tanaka |
2020-02-25 |
| 10396719 |
Integrated circuit device |
Taizo TATSUMI |
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| 10263583 |
Variable gain amplifier |
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2019-04-16 |
| 9825602 |
Amplifier |
Keiji Tanaka |
2017-11-21 |
| 9698023 |
Traveling-wave amplifier |
Taizo TATSUMI, Masataka Watanabe |
2017-07-04 |
| 9608581 |
Differential amplifier |
Taizo TATSUMI, Keiji Tanaka |
2017-03-28 |
| 9419574 |
Amplifier circuit |
Keiji Tanaka |
2016-08-16 |
| 9246440 |
Differential amplifier |
Keiji Tanaka, Taizo TATSUMI |
2016-01-26 |
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Optical modulator module and semiconductor optical modulator |
Chie Fukuda, Naoya KONO, Morihiro Seki, Kazuhiro Yamaji, Yasuyuki Yamauchi +2 more |
2015-06-02 |
| 9030257 |
Differential circuit compensated with self-heating effect of active device |
Yoshiyuki Sugimoto, Makoto Ito, Keiji Tanaka |
2015-05-12 |
| 8957709 |
Driver circuit powered by two power supplies sequentially activated |
Keiji Tanaka |
2015-02-17 |
