Journal Papers

1. S. Lee, S. Amakawa, T. Yoshida, M. Fujishima, “A 0.4-V 29-GHz-bandwidth power-scalable distributed amplifier in 55-nm CMOS DDC process,” IEICE Transactions on Electronics, p. 2021CTS0002.
2. S. Hara, R. Dong, S. Lee, K. Takano, N. Toshida, A. Kasamatsu, K. Sakakibara, T. Yoshida, S. Amakawa, M. Fujishima, “A 76-Gbit/s 265-GHz CMOS receiver with WR-3.4 waveguide interface,” in IEEE Journal of Solid-State Circuits, Jul 19 2022, https://doi.org/10.1109/JSSC.2022.3179560.
3. S. Lee, S. Amakawa, T. Yoshida, S. Hara and M. Fujishima, “A 32-Gb/s CMOS Receiver With Analog Carrier Recovery and Synchronous QPSK Demodulation,” in IEEE Microwave and Wireless Components Letters, vol. 31, no. 6, pp. 768-770, June 2021, doi: 10.1109/LMWC.2021.3066470.
4. Y. Morishita, S. Lee, T. Teraoka, R. Dong, Y. Kashino, H. Asano, S. Hara, K. Takano, K. Katayama, T. Sakamoto, N. Shirakata, K. Takinami, K. Takahashi, A. Kasamatsu, T. Yoshida, S. Amakawa, M. Fujishima, “300-GHz-Band OFDM Video Transmission with CMOS TX/RX Modules and 40 dBi Cassegrain Antenna Toward 6G,” IEICE Transactions on Electronics, Jan. 26 2021.
5. 高野恭弥, 天川修平, 片山光亮, 原紳介, 吉田毅, 藤島実, “テラヘルツ通信を実現する 300GHz 帯 CMOS 送信機モジュール,” 電子情報通信学会論文誌 C, vol. 102, no. 12, pp. 348-355, Dec. 1, 2019.
6. S. Lee, S. Hara, T. Yoshida, S. Amakawa, R. Dong, A. Kasamatsu, J. Sato, M. Fujishima, “An 80-Gb/s 300-GHz-Band Single-Chip CMOS Transceiver,” IEEE Journal of Solid-State Circuits, vol. 54, no. 12, pp. 3577-3588, Oct. 15, 2019.
7. S. Hara, K. Katayama, K. Takano, R. Dong, I. Watanabe, N Sekine, A. Kasamatsu, T. Yoshida, S. Amakawa, and M. Fujishima, “32-Gbit/s CMOS receivers in 300GHz band,” IEICE Trans. Electron., vol.E101-C, no.7, pp. 464-471, Jul. 2018.
8. K. Katayama, K. Takano, S. Amakawa, S. Hara, A. Kasamatsu, K. Mizuno, K. Takahashi, T. Yoshida, M. Fujishima, “A 300 GHz CMOS transmitter with 32-QAM 17.5 Gb/s/ch capability over six channels,” IEEE Journal of Solid-State Circuits, vol. 51, no. 12, pp. 3037-3048 (1 Dec. 2016).
9. S. Hara, K. Katayama, K. Takano, I. Watanabe, N. Sekine, A. Kasamatsu, T. Yoshida, S. Amakawa, M. Fujishima, “Compact 141-GHz differential amplifier with 20-dB peak gain and 22-GHz 3-dB bandwidth,” IEICE Transactions on Electronics, vol. 99, no. 10, pp. 1156-1163 (1 Oct. 2016).
10. K. Takano, K. Katayama, S. Amakawa, T. Yoshida and M. Fujishima, "Wireless digital data transmission from a 300 GHz CMOS transmitter", Electronics Letters, vol.52, Issue15, pp.1353-1355, July 2016.
11. H. Ando, K. Takizawa, T. Yoshida;h, K. Matsushita, M. Hirata, T. Suzuki, " Wireless Multichannel Neural Recording With a 128-Mbps UWB Transmitter for an Implantable Brain-Machine Interfaces", IEEE Transactions on Biomedical Circuits and Systems, vol.PP, Issue 99, pp.1-11, Feb. 2016.
12. Minoru Fujishima, Shuhei Amakawa, Kyoya Takano, Kosuke Katayama, Takeshi Yoshida, "Tehrahertz CMOS Design for Low-Power and High-Speed Wireless Communication", IEICE Trans. on Electronics, vol.E98-C, No.12, pp.1091-1104, Dec. 2015.
13. Masayuki Hirata, Kojiro Matsushita, Takufumi Yanagisawa, Tetsu Goto, Shayne Morris, Hiroshi Yokoi, Takafumi Suzuki, Takeshi Yoshida, Fumihiro Sato, Osamu Sakura, Yukiyasu Kamitani, Toshiki Yoshimine, "Motor Restoration Based on the Brain-Machine Interface Using Brain Surface Electrodes: Real-Time Robot Control and a Fully Implantable Wireless System", Advanced Robotics, Vol.26, Numbers 3-4, 2012, pp.399-408.
14. Masayuki HIRATA, Kojiro MATSUSHITA, Takafumi SUZUKI, Takeshi YOSHIDA, Fumihiro SATO, Shayne MORRIS, Takufumi YANAGISAWA, Tetsu GOTO, Mitsuo KAWATO, Toshiki YOSHIMINE, "A Fully-Implantable Wireless System for Human Brain-Machine Interfaces Using Brain Surface Electrodes: W-HERBS", IEICE Trans. Commun. vol.94-B, pp.2448-2453, Sep. 2011.
15. T. Yoshida, K. Sueishi, A. Iwata, K. Matsushita, M. Hirata, T. Suzuki, "A High-Linearity Low-Noise Amplifier with Variable Bandwidth for Neural Recording Systems, Japanese Journal of Applied Physics, Vol.50, No.4, p.04DE07, Apr. 2011.
16. T. Yoshida, Y. Masui, R. Eki, A. Iwata, M. Yoshida and K. Uematsu, "A Neural Recording Amplifier with Low-Frequency Noise Suppression", IEICE Trans. Electrons., vol.E93-C, pp.849-854, Jun. 2010.
17. Tomohiro Ishikawa, Takunari Kunimasa, Nobuo Sasaki, Yuji Murakami, Takeshi Yoshida and Kazuhiro Tsuga, "A Simple Wireless Intra-Oral Thermometry -A Denture with a CMOS Chip-", IEEJ Transactions on Sensors and Micromachines, Vol. 130 (2010), No. 1 pp.6-10.
18. Y. Masui, T. Yoshida and A. Iwata, "A 2.0 Vpp input, 0.5 V supply Delta Amplifier with A-to-D conversion", IEICE Trans. Electrons., vol.E92-C, pp.828-834, Jun. 2009.
19. Y. Masui, T. Yoshida and A. Iwata, "Low power and low voltage chopper amplifier without LPF", IEICE Electronics Express, Vol. 5 (2008), No. 22 pp.967-972.
20. A. Iwata, T. Yoshida and M. Sasaki, "Low-Voltage and Low-Noise CMOS Analog Circuit Using Scaled Devices", IEICE Trans. Electrons., vol.E90-C, pp.1149-1155, Jun. 2007.
21. T. Yoshida, N. Ishida, M. Sasaki and A. Iwata, "Low-Voltage, Low-Phase-Noise Ring-VCO using 1/f-noise Reduction Techniques", Japanese Journal of Applied Physics, Vol.46, No.4B, pp.2257-2260, 2007.
22. Y. Masui, T. Yoshida, M. Sasaki and A. Iwata, "A 0.6V Supply CMOS Amplifier Using Noise Reduction Technique of Autozeroing and Chopper Stabilization", Japanese Journal of Applied Physics, Vol.46, No.4B, pp.2252-2256, 2007.
23. T. Yoshida, Y. Masui, T. Mashimo, M. Sasaki and A. Iwata, "A 1V Low-Noise CMOS Amplifier Using Autozeroing and Chopper Stabilization Technique", IEICE Trans. Electrons., vol.E89-C, pp.769-774, Jun. 2006.
24. T. Yoshida, M. Akagi, T. Mashimo, A. Iwata, M. Yoshida and K. Uematsu, "Design of a Wireless Neural-Sensing LSI, IEICE Trans. Electrons., vol.E87-C, pp.996-1002, Jun. 2004.
25. T. Yoshida, T. Mashimo, M. Akagi, A. Iwata, M. Yoshida and K. Uematsu, "A Design of Neural Signal Sensing LSI with Multi-Input Channels", IEICE Trans. Fundamentals., vol.E87-A, pp.376-383, Feb. 2004.
26. T. Yoshida, D. Imafuku, J. L. Alay, S. Miyazaki and M. Hirose, "Quantitative Analysis of Tunneling Current through Ultrathin Gate Oxides", Jpn. J. Appl. Phys. Vol. 34, No. 2B(1995) L903-L906.

Conference Papers

1. Takeshi Yoshida, Hiroshi Adachi, Kyoya Takano, Kosuke Katayama, Shuhei Amakawa, Minoru Fujishima, "System-level evaluation of 300GHz CMOS wireless transmitter using cubic mixer", 2016 IEEE International Symposium on Radio-Frequency Integration Technology (RFIT), pp.1-3, Aug. 2016.
2. Kosuke Katayama; Kyoya Takano; Shuhei Amakawa; Takeshi Yoshida; Minoru Fujishima, "14.4-dB CMOS D-band low-noise amplifier with 22.6-mW power consumption utilizing bias-optimization technique", 2016 IEEE International Symposium on Radio-Frequency Integration Technology (RFIT), pp.1-3, Aug. 2016.
3. Kosuke Katayama; Kyoya Takano; Shuhei Amakawa; Shinsuke Hara; Takeshi Yoshida; Minoru Fujishima, "CMOS 300-GHz 64-QAM transmitter", 2016 IEEE MTT-S International Microwave Symposium (IMS), pp.1-4, May 2016.
4. Kyoya Takano; Shinsuke Hara; Kosuke Katayama; Shuhei Amakawa; Takeshi Yoshida; Minoru Fujishima, "Quintic mixer: A subharmonic up-conversion mixer for THz transmitter supporting complex digital modulation", 2016 IEEE MTT-S International Microwave Symposium (IMS), pp.1-4, May 2016.
5. Kosuke Katayama, Kyoya Takano, Shuhei Amakawa, Shinsuke Hara, Akifumi Kasamatsu, Koichi Mizuno, Kazuaki Takahashi, Takeshi Yoshida, Minoru Fujishima, "A 300GHz 40nm CMOS transmitter with 32-QAM 17.5 Gb/s/ch capability over 6 channels", 2016 IEEE International Solid-State Circuits Conference (ISSCC), pp.342-343, Feb. 2016.
6. Kyoya Takano, Kosuke Katayama, Takeshi Yoshida, Shuhei Amakawa, Minoru Fujishima, "124-GHz CMOS quadrature voltage-controlled oscillator with fundamental injection locking", 2015 IEEE Asian Solid-State Circuits Conference (A-SSCC), pp.1-4, Nov. 2015.
7. Kyoya Takano, Kosuke Katayama, Takeshi Yoshida, Shuhei Amakawa, Minoru Fujishima, Shinsuke Hara, Akifumi Kasamatsu, "Calibration of process parameters for electromagnetic field analysis of CMOS devices up to 330 GHz", 2015 IEEE International Symposium on Radio-Frequency Integration Technology (RFIT), pp.94-96, Aug. 2015.
8. S. Hara, I. Watanabe, N. Sekine, A. Kasamatsu, K. Katayama, K. Takano T. Yoshida, S. Amakawa, M. Fujishima, "Compact 138-GHz amplifier with 18-dB peak gain and 27-GHz 3-dB bandwidth", 2015 IEEE International Symposium on Radio-Frequency Integration Technology (RFIT), pp.55-57, Aug. 2015.
9. Ryuhei Goda, Shuhei Amakawa, Kosuke Katayama, Kyoya Takano, Takeshi Yoshida, Minoru Fujishima, "Modeling of wideband decoupling power line for millimeter-wave CMOS circuits", 2015 IEEE International Symposium on Radio-Frequency Integration Technology (RFIT), pp.151-153, Aug. 2015.
10. S. Amakawa, K. Katayama, K. Takano, T. Yoshida, M. Fujishima, "Comparative analysis of on-chip transmission line de-embedding techniques", 2015 IEEE International Symposium on Radio-Frequency Integration Technology (RFIT), pp.91-93, Aug. 2015.
11. H Ando, K Takizawa, T Yoshida, K Matsushita, M Hirata, T Suzuki, "Multichannel neural recording with a 128 Mbps UWB wireless transmitter for implantable brain-machine interfaces", 2015 37th Annual International Conference of the IEEE Engineering in Medicine and Biology Society (EMBC), pp.4097-4100, Aug. 2015.
12. S Hara, K Katayama, K Takano, I Watanabe, N Sekine, A Kasamatsu, T Yoshida, S Amakawa, M Fujishima, "Compact 160-GHz amplifier with 15-dB peak gain and 41-GHz 3-dB bandwidth", 2015 IEEE Radio Frequency Integrated Circuits Symposium (RFIC), pp.7-10, May 2015.
13. S Amakawa, R Goda, K Katayama, K Takano, T Yoshida, M Fujishima, "Wideband CMOS decoupling power line for millimeter-wave applications", 2015 IEEE MTT-S International Microwave Symposium, pp.1-4, May 2015.
14. K Takano, K Katayama, S Mizukusa, S Amakawa, T Yoshida, M Fujishima, "Systematic calibration procedure of process parameters for electromagnetic field analysis of millimeter-wave CMOS devices", Proceedings of the 2015 International Conference on Microelectronic Test Structures, pp.230-234, Mar. 2015.
15. R Goda, S Amakawa, K Katayama, K Takano, T Yoshida, M Fujishima, "Characterization of wideband decoupling power line with extremely low characteristic impedance for millimeter-wave CMOS circuits", Proceedings of the 2015 International Conference on Microelectronic Test Structures, pp.220-223, Mar. 2015.
16. T. Yoshida, K. Takano, C.Y. Li, K. Katayama, S. Amakawa, M. Fujishima, "79 GHz CMOS Power Amplifier Considering Time- and Temperature-Degradation Model", Asia-Pacific Microwave Conference Proceedings (APMC) 2014, pp.637-639, Nov. 2014.
17. S. Mizukusa, K. Takano, K. Katayama, S. Amakawa, T. Yoshida, M. Fujishima, "Analytical Design of Small-Signal Amplifier with Maximum Gain in Conditionally Stable Region", Asia-Pacific Microwave Conference Proceedings (APMC) 2014, pp.774-776, Nov. 2014.
18. Takafumi Suzuki, Hiroshi Ando, Takeshi Yoshida, Hirohito Sawahata, Keisuke Kawasaki, Isao Hasegawa, Kojiro Matsushita, Masayuki Hirata, Toshiki Yoshimine, Kenichi Takizawa, "Super Multi-Channel Recording Systems with UWB Wireless Transmitter for BMI (I)", 2014 36th Annual International Conference of the IEEE Engineering in Medicine and Biology Society (EMBC), pp.FC08.5, Aug. 2014.
19. R. Nahara, K. Katayama, K. Takano, S. Amakawa, T. Yoshida and M. Fujishima, “Diode modeling with lossy nonlinear capacitance model,” 2014 International Conference on Solid State Devices and Materials (SSDM 2014), Sep 2014.
20. H. Adachi, M. Motoyoshi, K. Takano, K. Katayama, S. Amakawa, T. Yoshida and M. Fujishima, “Design of CMOS resonating push-push frequency doubler,” 2014 IEEE International Meeting for Future of Electron Devices, Kansai (IMFEDK), pp. 1-2, Jun 2014.
21. H. Kunitake, K. Takano, M. Motoyoshi, K. Katayama, S. Amakawa, T. Yoshida and M. Fujishima, “Design of millimeter-wave CMOS transmission-line-to-waveguide transitions,” 2014 IEEE International Meeting for Future of Electron Devices, Kansai (IMFEDK), pp. 1-2, Jun 2014.
22. K. Takano, M. Motoyoshi, T. Yoshida, K. Katayama, S. Amakawa and M. Fujishima, “Evaluation of CMOS differential transmission lines as two-port networks with on-chip baluns in millimeter-wave band,” 2014 83rd ARFTG Microwave Measurement Conference (ARFTG), pp. 1-5, Jun 2014.
23. C.Y. Li, K. Katayama, T. Yoshida, M. Motoyoshi, K. Takano, S. Amakawa and M. Fujishima, “Small-signal model considering hot-carrier effect for millimeter-wave frequencies,” 7th Global Symposium on Millimeter-Waves 2014 (GSMM 2014), May 2014.
24. S. Amakawa, A. Orii, K. Katayama, K. Takano, M. Motoyoshi, T. Yoshida, M. Fujishima, “Design of well-behaved low-loss millimetre-wave CMOS transmission lines,” 2014 IEEE 18th Workshop on Signal and Power Integrity (SPI), pp. 1-4, May. 2014.
25. S. Amakawa, A. Orii, K. Katayama, K. Takano, M. Motoyoshi, T. Yoshida, and M. Fujishima, “Process parameter calibration for millimeter-wave CMOS back-end device design with electromagnetic field analysis,” International Conference on Microelectronic Test Structures (ICMTS), Mar. 2014.
26. T. Yoshida, K. Takano, C. Li, M. Motoyoshi, K. Katayama, S. Amakawa and M. Fujishima, "CMOS Power Amplifier with Temperature Compensation for 79 GHz Radar System", 2013 Asia-Pacific Microwave Conference Proceedings (APMC), pp.239-241, Nov. 2013.
27. K. Matsushita, M. Hirata, M. T. Suzuki, H. Ando, Y. Ota, F. Sato, S. Morris, T. Yoshida, H. Matsuki, T. Yoshimine, "Development of an implantable wireless ECoG 128ch recording device for clinical brain machine interface", 2013 35th Annual International Conference of the IEEE Engineering in Medicine and Biology Society (EMBC), pp.1867-1870, July 2013.
28. T. Suzuki, H. Ando, T. Yoshida, H. Sawahata, K. Kawasaki, I. Hasegawa, K. Matsushita, M. Hirata, T. Yoshimine, K. Takizawa, "Super Multi-Channel Recording System for BMI". 2013 IEEE EMBC Short Papers No. 2509.
29. H. Ando, K. Takizawa, T. Yoshida, K. Matsushita, M. Hirata, T. Yoshimine, T. Suzuki, "Multi-Channel ECoG Recording System with UWB Wireless Data Transmitter for Fully Implantable Brain-Machine Interfaces". 2013 IEEE EMBC Short Papers No. 3383.
30. C. Li, T. Yoshida, K. Katayama, M. Motoyoshi, K. Takano, S. Amakawa and M. Fujishima, “Evaluation for temperature dependence and lifetime of 79GHz power amplifier,” 2013 International Meeting for Future of Electron Devices, Kansai (IMFEDK), pp.100-101, Jun. 2013.
31. A. Orii, M. Suizu, S. Amakawa, K. Katayama, K. Takano, M. Motoyoshi, T. Yoshida, M. Fujishima, "On the length of THRU standard for TRL de-embedding on Si substrate above 110 GHz", 2013 IEEE International Conference on Microelectronic Test Structures (ICMTS), pp.81-86, 2013.
32. T. Yoshida, H. Ando, M. Ono, Y. Murasaka, A. Iwata, T. Suzuki, K. Matsushita, M. Hirata,"A 36-channel Neural Recoding Chip for Brain Machine Interface", Extended Abstracts of the 2012 International Conference on Solid State Devices and Materials (Kyoto, 2012), pp.1124-1125.
33. T. Suzuki, K. Matsushita, T. Umeda, H. Watanabe, H. Ando,T.Yoshida,Y. Nishimura, T. Nishimura, T. Yoshimine, M. Hirata, "A Fully Implantable Wireless BMI System Using Electrocorticogram (System Evaluation)", 34th Annual Int. Conf. of the IEEE EMBS 2012, ThD08.78.
34. K. Sueishi, T. Yoshida, A. Iwata, K. Matsushita, M. Hirata, T. Suzuki, "A 60dB SFDR Low-Noise Amplifier with Variable Bandwidth for Neural Recording Systems", Extended Abstracts of the 2010 International Conference on Solid State Devices and Materials (Tokyo, 2010), pp.812-813.
35. T. Yoshida, Y. Masui, R. Eki, A. Iwata, M. Yoshida and K. Uematsu, "A Neural Signal Detection Amplifier with Low-Frequency Noise Suppression", Proceedings of 2009 IEEE International Symposium on Circuits and Systems (ISCAS2009), pp.661-664.
36. T. Ishikawa, Y. Masui, K. Johguchi, T. Yoshida, Y. Murakami, "A Wireless Chip for Intra-Oral Temperature Measurement", Proceedings of the Workshop on Synthesis And System Integration of Mixed Information Technologies 2009.
37. Y. Masui, T. Yoshida, M. Sasaki and A. Iwata, "A 2.0 Vpp input, 0.5 V supply Delta Amplifier with A-to-D conversion", Proceedings of 2008 IEEE Asian Solid-State Circuit Conference (Fukuoka, 2008), pp.265-268.
38. T. Yoshida, N. Ishida, M. Sasaki and A. Iwata, "Low-Voltage, Low-Phase-Noise Ring-VCO using 1/f-noise Reduction Techniques", Extended Abstracts of the 2006 International Conference on Solid State Devices and Materials (Yokohama, 2006), pp.376-377.
39. Y. Masui, T. Yoshida, M. Sasaki and A. Iwata, "A 0.6V Supply CMOS Amplifier Using Noise Reduction Technique of Autozeroing and Chopper Stabilization", Extended Abstracts of the 2006 International Conference on Solid State Devices and Materials (Yokohama, 2006), pp.374-375.
40. T. Yoshida, Y. Masui, T. Mashimo, M. Sasaki and A. Iwata, "A 1V Supply 50nV/root-Hz Noise PSD CMOS Amplifier using Noise Reduction Technique of Autozeroing and Chopper Stabilization", 2005 Symposium on VLSI Circuits, pp.118-121.
41. T. Yoshida, M. Akagi, M. Sasaki, A. Iwata, "A 1V Supply Successive Approximation ADC with Rail-to-Rail Input Voltage Range", Proceedings of 2005 IEEE International Symposium on Circuits and Systems (ISCAS2005), pp.192-195.
42. T. Yoshida, T. Mashimo, A. Iwata, M. Yoshida and K. Uematsu, "A Low Noise Amplifier using Chopper Stabilization for a Neural Sensor LSI", Extended Abstracts of the 2004 International Conference on Solid State Devices and Materials (Tokyo, 2004), pp.148-149.
43. T. Yoshida, T. Mashimo, M. Akagi, A. Iwata, M. Yoshida and K. Uematsu, "A Design of Neural Signal Sensing LSI with Multi-Input Channels", Proceedings of the Workshop on Synthesis And System Integration of Mixed Information Technologies 2003, pp.206-210.
44. Y. Ohtomo, T. Yoshida, M. Nishisaka, K. Nishimura and M. Shimaya, "A Single-Chip 3.5-Gb/s CMOS/SIMOX Transceiver with Automatic Gain Control and Automatic Power Control Circuits", IEEE International Solid-State Circuits Conference Digests of Technical Papers (San Francisco, 2000), pp. 58-59.
45. T. Yoshida, Y. Ohtomo, M. Shimaya, "A Novel p-i-n Photo-detector Fabricated on SIMOX for 1-GHz 2-V CMOS OEICs", IEEE International Electron Device Meeting Technical Digest (San Francisco, 1998), pp.68-72.
46. T.Yoshida, S. Miyazaki and M. Hirose, "Analytical Modelling of Quasi-Breakdown of Ultrathin Gate Oxides under Constant Current Stressing", Extended Abstracts of the 1996 International Conference on Solid State Devices and Materials (Yokohama, 1996) pp.539-541.
47. T. Yoshida, D. Imafuku, J. L. Alay, S. Miyazaki and M. Hirose, "Influence of Organic Molecule Contamination on Quasi-Breakdown of Ultrathin Gate Oxides", Proc. of the 3rd Int. Symp. on Ultra Clean Proceeding of Silicon Surfaces (Antwerp, Belgium, 1996) pp.305-308.
48. M. Hirose, T. Yoshida, J. L. Alay and S. Miyazaki, "Current Transport and Reliability Issues in Ultrathin Gate Oxides", Semiconductor Technical Symposium-Process Technology (Korea, 1996) pp.93-97.
49. M. Hirose, J. L. Alay, T. Yoshida and S. Miyazaki, "Electronic Density of States at the Ultrathin SiO2/Si Interfaces", Proc. of 189th Electrochemical Society Meeting, Vol. 96-1 (Los Angeles, 1996) p.630.

JAPAN Patents

1. 差分増幅回路とそれを用いたAD変換装置，特願2008-269814，特開2010-98668，吉田毅，升井義博, 岩田穆, 後藤邦彦.
2. 帰還型増幅回路, 特願2006-242728, 特開2008-67050, 吉田毅, 升井義博, 岩田穆, 後藤邦彦.
3. チョッパ増幅回路, 特願2005-93683, 特開2006-279377, 吉田毅, 岩田穆, 佐々木守, 真下隆行, 升井義博, 中塚淳二.
4. AB級CMOS出力回路, 特願2004-342421, 特開2006-157262, 吉田毅, 岩田穆, 佐々木守, 後藤邦彦.
5. アナログディジタル変換回路, 特願2004-342508, 特開2005-223888, 吉田毅, 岩田穆, 佐々木守, 赤木美穂, 後藤邦彦.
6. 光出力制御回路, 特願2001-77172, 特開2002-280965, 吉田毅, 広瀬正樹, 稲垣武, 豊田勝仁.
7. pin型半導体受光素子およびこれを含む半導体受光回路, 特願平10-283144, 特開2000-191633, 吉田毅, 大友祐輔.
8. pin型半導体受光素子, 特願平10-221189, 特開2000-58900, 吉田毅, 大友祐輔.
9. pin型半導体受光素子, 特願平10-142932, 特開平11-340496, 吉田毅, 大友祐輔.
10. 半導体集積回路, 特願平9-351968, 特開平11-177092, 吉田毅, 大友祐輔.

International Patents

1. Differential amplifier circuit amplifying differential signals with selectively switching between differential signals and AD converter apparatus, US Patent 7,907,076, Takeshi Yoshida, Yoshihiro Masui, Atsushi Iwata, Kunihiko Goto.
2. Feedback amplifier circuit operable at low voltage by utilizing switched operational amplifier and chopper modulator, US Patent 7,589,587, Takeshi Yoshida, Yoshihiro Masui, Atsushi Iwata, Kunihiko Goto.
3. Chopper amplifier circuit apparatus operable at low voltage utilizing switched operational amplifier, US Patent 7,336,123, Takeshi Yoshida, Atsushi Iwata, Mamoru Sasaki, Takayuki Mashimo, Yoshihiro Masui, Junji Nakatsuka.
4. Class AB CMOS output circuit equipped with CMOS circuit operating by predetermined operating current, US Patent 7,301,399, Takeshi Yoshida, Atsushi Iwata, Mamoru Sasaki, Kunihiko Goto.
5. Analog to digital converter circuit of successive approximation type operating at low voltage, US Patent 7,015,841, Takeshi Yoshida, Atsushi Iwata, Mamoru Sasaki, Miho Akagi, Kunihiko Goto.
6. Optical output control circuit for obtaining stable optical output power, US Patent 6,678,290, Takeshi Yoshida, Masaki Hirose, Takeshi Inagaki, Katsuhito Toyoda.
7. Optische Leistungskontrollschaltung zur stabilen optischen Ausgangsleistung, European Patent 1246327, Takeshi Yoshida, Masaki Hirose, Takeshi Inagaki, Katsuhito Toyoda.
8. P-I-N Semiconductor Photodetector, US Patent 6,111,305, Takeshi Yoshida, Yusuke Ohtomo.