- 著書
- Akihiko Hirata et al.,（分担執筆）, “THz Communications” Springer Nature，2022.
枚田 明彦 他（分担執筆）, “次世代無線通信に向けたアンテナ開発” シーエムシー出版，2020.
枚田 明彦他（分担執筆）, “2030年の情報通信技術”3.3 節,ＮＴＴ出版，2015.
- 論文
- [73] Akihiko Hirata, Tubasa Saijo, Yuma Kawamoto, Tadao Nagatsuma, Issei
Watanab, Member, Norihiko Sekien, and Akifumi Kasamatu, "Evaluation
of transmission characteristics of 120-GHz-band close-proximity wireless
links using split-ring-resonator absorber integrated planar slot antenna,"
IEICE Trans. on Electronics Vol.E106-C No.9 pp.587-595, Sep. 2022.
[72] Yusuke Tanaka, Guilliaume Ducournau, Cybelle Belem-Goncalves, Frederic
Gianesello, Cyril Luxey, Issei Watanabe, Akihiko Hirata, Norihiko Sekine,
Akifumi Kasamatsu, and Shintaro Hisatake, "Photonics-Based Near-Field
Measurement and Far-Field Characterization for 300-GHz Band Antenna Testing,"
IEEE Open Journal of Antennas and Propagation, Vol. 3, pp. 24-31, Dec.
2021
[71] Akihiko HIRATA, Koichiro ITAKURA, Taiki HIGASHIMOTO, Yuta UEMURA,
Tadao NAGATSUMA, Takashi TOMURA, Jiro HIROKAWA, Norihiko SEKINE, Issei
WATANABE,and Akifumi KASAMATSU, "Transmission Characteristics Control
of 120 GHz-Band Bandstop Filter by Coupling Alignment-Free Lattice Pattern,"IEICE
Trans. on Electronics Vol.E104-C No.10 pp.587-595, October,2021.
[70] Koichiro Itakura, Akihiko Hirata, Masato Sonoda, Taiki Higashimoto,
Tadao Nagatsuma, Takashi Tomura, Jiro Hirokawa, Norihiko Sekine, Issei
Watanabe, and Akifumi Kasamatsuo, "Control of 120-GHz-band Split Ring
Resonator Filter by Coupling Lattice Pattern Substrate," IEICE Transactions
on Electronics, Vol. E104-C, No. 3, pp. 102-111, Mar 2020.
[69] Akihiko Hirata, Makoto Nakashizuka, Koji Suizu, and Yoshikazu Sudo,
"Contrast Enhancement of 76.5 GHz-band Millimeter-Wave Images using
Near-field Scattering for Non-Destructive Detection of Concrete Surface
Cracks," IEICE Transactions on Electronics, Vol. E103-C, No. 4, 2019ECP5034,
Oct 2018.
[68] Akihiko Hirata and Jiro Hirokawa, “Absorber integrated planar slot
array antenna for suppression of multiple reflection in 120-GHz-band close-proximity
wireless system,” IEICE Transactions on Electronics, Vol. E101-C, No. 10,
pp. 791-800, Oct 2018.
[67] 望月 章志, 水上 雅人, 竹内 淳, 枚田 明彦, “地下埋設インフラ設備の自動撮影ロボット用移動機構の検討,” 精密機械工学会誌,
Vol. 84, No. 5, pp. 449-453, May 2018.
[66] 永妻 忠夫, 枚田 明彦 “テラヘルツ波を利用した無線通信技術の現状と将来展望,” 電子情報通信学会和文論文誌B、J100-B, Vol.
9, pp. 705-713, September, 2017.
[65] Ai-ichiro Sasaki, Akinori Furuya, Akihiko Hirata, Hiroki Morimura
and Junichi Kodate, “Method for systematically designing polarization optics
to maximize sensitivity of electrooptic sensors,” Japanese Journal of Applied
Physics, Vol. 56, No. 9s, 09NB01-1-6, July 2017.
[64] Ai-ichiro Sasaki, Olivier Ouellette, Maxime Beaudry-Marchand, Akihiko
Hirata, and Hiroki Morimura, “Analysis and Experimental Study of Magnetic-Field
Amplification by a Double Coil,” IEEE Trans. Industrial Electronics, Vol.
64, No. 4, pp. 3216-3226, April 2017.
[63] A. Hirata, J. Takeuchi, K. Hashimoto, and J. Hirokawa, “Alignment
Control System using Beam-tilting 1-D Waveguide-slot Array Antennas for
120-GHz-band Corporate-feed High-gain 2-D Arrays,” Trans. IEICE B, Vol.E100-B,No.01,
2017.
[62] (招待論文) 津持純、岡部聡、杉之下文康、竹内淳、枚田明彦、” 8K放送番組素材伝送用120GHz帯SHV-FPU,”電子情報通信学会和文論文誌C、J99-C,
Vol. 8, pp. 382-392, Aug. 2016.
[61] Keiichiro Shiraga, Tetsuhito Suzuki, Naoshi Kondo, Takuro Tajima,
Masahito Nakamura, Hiroyoshi Togo, Akihiko Hirata, Katsuhiro Ajito, and
Yuichi Ogawa, “Broadband Dielectric Spectroscopy of Glucose Aqueous Solution:
Analysis of the Hydration State and the Hydrogen Bond Network,” J. Chemical
Physics, 142, 234504, 2015.
[60] (Invited) Akihiko Hirata, “Millimeter-wave system technologies for
wireless communications, imaging, and sensing,” IEICE Electronics Express,
Vol. 12, no. 13, pp. 20152003, 2015.
[59] (Invited) Akihiko Hirata, and Makoto Yaita, “Ultrafast Terahertz Wireless
Communications Technologies,” IEEE Transactions on Terahertz Science and
Technology, vol. 5, no. 6, pp. 1128-1132, November, 2015.
[58] Hiroyuki Takahashi, Toshihiko Kosugi, Akihiko Hirata, Jun Takeuchi,
Koichi Murata, and Naoya Kukutsu, “120-GHz-band amplifier module with hermetic
sealing structure for 10-Gib/ts wireless system,” IEICE Trans. Electron.,
Vol.E97-C, No.6, pp.583-591, June, 2014.
[57] Jae-Young Kim, Hidetaka Nishi, Ho-Jin Song,Hiroshi Fukuda, Makoto
Yaita, Akihiko Hirata, and Katsuhiro Ajito, “Compact and stable THz vector
spectroscopy using silicon photonics technology,” Optic Express, Vol. 22,
Issue 6, pp. 7178-7185, March, 2014.
[56] Dongjin Kim, Jiro Hirokawa, Makoto Ando, Jun Takeuchi, and Akihiko
Hirata,“64x64-element and 32x32-element slot array antennas using double-layer
hollow-waveguide corporate-feed in the 120 GHz band,” IEEE Transactions
on Antennas and Propagation, Vol. 62, No. 3, pp.1507-1512, March 2014.
[55] Hiroyuki Takahashi, Akihiko Hirata, Katsuhiro Ajito, Shintaro Hisatake,
and Tadao Nagatsuma,”10-Gbit/s close-proximity wireless system meeting
the regulation for extremely low-power radio stations,” IEICE Electronics
Express , Vol. 11 (2014) No. 3, pp. 1-7, February, 2014.
[54] Jun Takeuchi, Akihiko Hirata, Hiroyuki Takahashi, Naoya Kukutsu, Yoshiaki
Yamada, Kei Kitamura, and Mitsuhiro Teshima, “10-Gbit/s Bidirectional and
20-Gbit/s Unidirectional 2-ch Wireless Data Transmission System using 120-GHz-band
Finline Orthomode Transducers,”IEICE Transactions on Electronics, vol.E97-C,
no.2, pp.101-110, February, 2014.
[53] Jun Takeuchi, Akihiko Hirata, Hiroyuki Takahashi, and Naoya Kukutsu,
“A Finline Orthomode Transducer for 120-GHz-band Wireless Links,” IEICE
Transactions on Electronics, vol.E97-C, no.2, pp.111-119, February, 2014.
[52] Jae-Young Kim, Ho-Jin Song, Makoto Yaita, Akihiko Hirata, and Katsuhiro
Ajito, “CW-THz vector spectroscopy and imaging system based on 1.55-µm
fiber-optics,” Optic Express, Vol. 22, Issue 2, pp. 1735-1741, January,
2014.
[51] Hiroyuki Takahashi, Toshihiko Kosugi, Akihiko Hirata, Jun Takeuchi,
Koichi Murata, and Naoya Kukutsu, “120-GHz-Band Fully Integrated Wireless
Link Using QSPK for Realtime 10-Gbit/s Transmission,” IEEE Trans. on Microwave
Theory and Techniques, vol. 61, no. 12, pp. 4745-4753, December, 2013.
[50] Dongjin Kim, Jiro Hirokawa, Makoto Ando, Jun Takeuchi, and Akihiko
Hirata, “4 x 4-Element Corporate-Feed Waveguide Slot Array Antenna With
Cavities for the 120 GHz-Band,” IEEE Trans. on Antennas and propagation,
vol. 61, no. 12, pp. 5968-5975, December, 2013.
[49] Jun Takeuchi, Akihiko Hirata, Hiroyuki Takahashi, and Naoya Kukutsu,
“Evaluation of Interference between Parallel 120-GHz-Band Wireless Link
Systems with High-Gain Cassegrain Antennas,” IEICE Transactions on Electronics,
Vol.E96-C No.10 pp.1294-1300, October, 2013.
[48] Dongjin Kim, Jiro Hirokawa, Kimio Sakurai, Makoto Ando, Takuma Takada,
Tadao Nagatsuma, Jun Takeuchi, and Akihiko Hirata, “Design and measurement
of the plate laminated waveguide slot array antenna and its feasibility
for wireless link system in the 120 GHz band,” IEICE Transactions on Communications,
vol. E96-B, no. 8, pp 2102-2011, August, 2013.
[47] Akihiko Hirata, Toshihiko Kosugi, Hiroyuki Takahashi, Jun Takeuchi,
Hiroyoshi Togo, Makoto Yaita, Naoya Kukutsu, Kimihisa Aihara, Koich Murata,
Yasuhiro Sato, Tadao Nagatsuma, and Yuichi Kado, “120-GHz-Band Wireless
Link Technologies for Outdoor 10-Gbit/s Data Transmission,” IEEE Transactions
on Microwave Theory and Techniques, vol. 60, no. 3, pp. 881-895, March,
2012.
[46] Hiroyuki Takahashi, Toshihiko Kosugi, Akihiko Hirata, and Koichi Murata,
“Supporting Fast and Clear Video,“ IEEE Microwave Magazine, vol. 13, no.
6, pp. 54 - 64, September, 2012.
[45] Hiroyuki Takahashi, Toshihiko Kosugi, Akihiko Hirata, Koichi Murata,
and Naoya Kukutsu, “10-Gbit/s BPSK Modulator and Demodulator for a 120-GHz-Band
Wireless Link,” IEEE Transactions on Microwave Theory and Techniques, vol.
59, no. 5, pp. 1361 - 1368, May, 2011.
[44] Hiroyuki Takahashi, Toshihiko Kosugi, Akihiko Hirata, Koichi Murata,
and Naoya Kukutsu, “10-Gbit/s Quadrature Phase-Shift-Keying Modulator and
Demodulator for 120-GHz-Band Wireless Links,” IEEE Transactions on Microwave
Theory and Techniques, vol. 58, no. 12, pp. 4072 – 4078, December, 2010.
[43] Toshihiko Kosugi, Hiroki Sugiyama, Koichi Murata, Hiroyuki Takahashi, Akihiko
Hirata, Naoya Kukutsu, Yuichi Kado, and Takamoto Enoki,“A 125-GHz 140-mW
InGaAs/InP composite-channel HEMT MMIC power amplifier module,”IEICE Electronic
Express, vol. 6, no. 24, pp 1764-1768, December, 2009.
[42] Akihiko Hirata, Ryoichi Yamaguchi, Hiroyuki Takahashi, Toshihiko Kosugi,
Koichi Murata, Naoya Kukutsu, and Yuichi Kado, “Effect of Rain Attenuation
for a 10-Gb/s 120-GHz-band Millimeter-Wave Wireless Link,” IEEE Transactions
on Microwave Theory and Techniques,” vol. 57, no. 12, pp. 3099-3105, December,
2009.
[41] Ho-Jing Song, Katsuhiro Ajito, Akihiko Hirata, Atsushi Wakatsuki,
Yoshifumi Muramoto, Tomohiro Furuta, Naoya Kukutsu, Tadao Nagatsuma, and
Yuichi Kado, “8 Gbit/s wireless data transmission at 250 GHz,” Electronics
Letters, vol. 45, no. 22, pp. 1122-1124, October, 2009.
[40] Akihiko Hirata, Ryoichi Yamaguchi, Toshihiko Kosugi, Hiroshi Takahashi,
Koichi Murata, Tadao Nagatsuma, Naoya Kukutsu, Yuichi Kado, Naohiko Iai,
Satoshi Okabe, Satoshi Kimura, Hidehiko Ikegawa, Hiroshi Nishikawa, Toshihiro
Nakayama, and Tomonori Inada, “10-Gbit/s Wireless Link Using InP HEMT MMIC
for Generating 120-GHz-band Millimeter-wave,” IEEE Transactions on Microwave
Theory and Techniques, vol. 57, no. 5, pp. 1102-1109, May, 2009.
[39] Toshihiko Kosugi, Akihiko Hirata, Tadao Nagatsuma, and Yuichi Kado,
“MM-wave long-range wireless systems,” IEEE Microwave Magazine, vol. 10,
Issue 2, pp. 68-76, April, 2009.
[38] (Invited) Akihiko Hirata, Hiroyuki Takahashi, Ryoichi Yamaguchi, Toshihiko
Kosugi, Koichi Murata, Tadao Nagatsuma, Naoya Kukutsu, and Yuichi Kado,
“Transmission Characteristics of 120-GHz-band Wireless Link Using Radio-on-Fiber
Technologies,” IEEE Journal of Lightwave Technologies, vol. 26, no. 15,
pp. 2338-2344, August, 2008.
[37] Akihiko Hirata, Tadao Nagatsuma, Toshihiko Kosugi, Hiroyuki Takahashi,
Ryoichi Yamaguchi, Naofumi Shimizu, Naoya Kukutsu, Koichi Murata, Yuichi
Kado, Hidehiko Ikegawa, Hiroshi Nishikawa, and Toshihiro Nakayama, “10-Gbit/s
wireless communications technology using sub-terahertz waves,” Proceedings
of the SPIE - The International Society for Optical Engineering, vol. 6772,
no. 1, pp. 1-11,September, 2007.
[36] Akihiko Hirata, Toshihiko Kosugi, Hiroyuki Takahashi, Ryouichi Yamaguchi,
Fumito Nakajima, Tomofumi Furuta, Hiroshi Ito, Hirohiko Sugahara, Yasuhiro
Sato, and Tadao Nagatsuma, “120-GHz-Band Millimeter-Wave Photonic Wireless
Link for 10-Gbit/s Data Transmission,” IEEE Transactions on Microwave Theory
and Techniques, vol. 54, no.5, pp. 1937-1944, May, 2006.
[35] Akihiko Hirata, Tomofumi Furuta, Hiroshi Ito, and Tadao Nagatsuma,
“10-Gbit/s Millimeter-Wave Signal Generation using Photodiode Bias Modulation,”
IEEE Journal of Lightwave Technology, vol. 24, no.4, pp. 1725-1731, April,
2006.
[34] Hiroshi Ito, Tomofumi Furuta, Toshihiko Kosugi, Akihiko Hirata, Hiroyuki
Takahashi, Yoshifumi Muramoto, Masami Tokumitsu, Yasuhiro Sato,Tadao Nagatsuma,
and Tadao Ishibashi, “Over-10-dBm output uni-traveling-carrier photodiode
module integrating a power amplifier for wireless transmissions in the
125-GHz band,” IEICE Electronic Express, vol. 2, no. 12, pp. 446-450, August,
2005.
[33] Akihiko Hirata, Hiroyoshi Togo, Naofumi Shimizu, Hiroyuki Takahashi,
and Katsunari Okamoto, and Tadao Nagatsuma, “Low-phase noise photonic millimeter-wave
generator using an AWG integrated with a 3-dB combiner,” IEICE Transactions
on Electronics, vol. E88-C, no. 7, pp. 1458-1464, July 2005.
[32] Hiroo Suzuki, Masamichi Fujiwara, K. Iwatsuki, Akihiko Hirata, and
Tadao Nagatsuma, “Photonic millimetre-wave generator using intensity and
phase modulators for 10 Gbit/s wireless link,” Electronics Letters, vol.
41, no. 6, pp. 355-356, March, 2005.
[31] Hiroshi Ito, Tomohiro Furuta, Akihiko Hirata, Toshihiko Kosugi, Yoshifumi
Muramoto, Masami Tokumitsu, Tadao Nagatsuma, and Tadao Ishibashi, ”Pre-amplifier
integrated uni-travelling-carrier photodiode module for operation in 120
GHz band,” Electronics Letters, vol. 41, no. 6, pp. 360-362, March, 2005.
[30] Akihiko Hirata, Toshihiko Kosugi, Tsugumichi Shibata, and Tadao Nagatsuma,
“High-directivity photonic emitter using photodiode module integrated with
HEMT amplifier for 10-Gbit/s wireless link,” IEEE Transactions on Microwave
Theory and Techniques, vol. 52, no. 8, pp. 1843-1850, August 2004.
[29] Hiroyoshi Togo, Aiichiro Sasaki, Akihiko Hirata, and Tadao Nagatsuma,
“Characterization of millimeter-wave antenna using photonic measurement
techniques,” International Journal of RF and Microwave Computer-Aided Engineering,
vol. 14, no. 3, pp. 290-297, May 2004.
[28] T. Nagatsuma, A. Hirata, and H. Ito, “494.Photonic Generation of Millimeter
Waves and Its Applications,” IEEE LEOS Newsletter，Vol. 17, No. 5, pp. 20-21，October
2003.
[27] Akihiko Hirata, Mitsuru Harada, and Tadao Nagatsuma, “120-GHz wireless
link using photonic techniques for generation, modulation, and emission
of millimeter-wave signals,” IEEE Journal of Lightwave Technology, vol.
21, no. 10, pp. 2145-2153, October 2003.
[26] (Invited) Akihiko Hirata, Mitsuru Harada, Kenji Sato, and Tadao Nagatsuma,
“Low-cost millimeter-wave photonic techniques for gigabit/s wireless link,”
IEICE Transactions on Electronics, vol. E86-C, no. 7, pp. 1123-1128, July
2003.
[25] S. Takano, A. Ueda, T. Yamamoto, S. Asayama, Y. Sekimoto,T. Noguchi,
M. Ishiguro, H. Takara, S. Kawanishi,H. Ito, H, A. Hirata, and T. Nagatsuma,
“ The first radioastronomical observation with photonic local oscillator,
“ Publication of the Astronomical Society of Japan, vol. 55, pp. L53-L56,
2003.
[24] Tadashi Minotani, Akihiko Hirata, and Tadao Nagatsuma, “A broadband
120-GHz Schottky-diode receiver for 10-Gbit/s wireless links,” IEICE Transactions
on Electronics, vol. E86-C, no. 8, pp. 1501-1505, August 2003.
[23] Akitoshi Ueda, Takashi Noguchi, Shinichiro Asayama, Hiroyuki Iwashita,
Yutaro Sekimoto, Masato Ishiguro, Hiroshi Ito, Tadao Nagatsuma, Akihiko
Hirata, and William Shillue, “Ultra-low noise photonic local oscillator
at 100 GHz,” Japanese Journal of Applied Physics, Part 2 (Letters), vol.
42, no. 6B, pp. L704-705, June 2003.
[22] Akitoshi Ueda, Takashi Noguchi, Hiroyuki Iwashita, Yutaro Sekimoto,
Masato Ishiguro, Shuro Takano, Tadao Nagatsuma, Hiroshi Ito, Akihiko Hirata,
and Tadao Ishibashi, “W-band waveguide photomixer using a uni-traveling-carrier
photodiode with 2-mW output,” IEEE Transactions on Microwave Theory and
Techniques, vol. 51, no. 5, pp. 1455-1459, May 2003.
[21] Hiroshi Ito, Tadao Nagatsuma, Akihiko Hirata, Tadashi Minotani, Aiichiro
Sasaki, Yasuhiro Hirota, and Tadao Ishibashi, “High-power photonic millimetre
wave generation at 100 GHz using matching-circuit-integrated uni-travelling-carrier
photodiodes,” IEE Proceedings-Optoelectronics, vol. 150, no. 2, pp. 138-142,
April 2003.
[20] Hiroshi Ito, Tomohiro Furuta, Yasuhiro Hirota, Tadao Ishibashi, Akihiko
Hirata, Tadao Nagatsuma, Hiroshi Matsuo, Takashi Noguchi, and Masato Ishiguro,
“Photonic millimetre-wave emission at 300 GHz using an antenna-integrated
uni-travelling-carrier photodiode,” Electronics Letters, vol. 38, no. 17,
pp. 989-990, August 2002.
[19] Akihiko Hirata, Tadao Nagatsuma, Ryuji Yano, Hiroshi Ito, Tomofumi
Furuta, Yasuhiro Hirota, Tadao Ishibashi, Hiroshi Matsuo, Akitoshi Ueda,
Takashi Noguchi, Yutaro Sekimoto, Masato Ishiguro, and Shuji Matsuura,
“Output power measurement of photonic millimetre-wave and sub-millimetre-wave
emitter at 100-800 GHz,” Electronics Letters, vol. 38, no. 15, pp.798-800,
July 2002.
[18] Akihiko Hirata, Mitsuru Harada, and Tadao Nagatsuma, “3.0 Gbit/s wireless
links using 120-GHz millimeter-wave photonic techniques,” IEICE Transactions
on Electronics, vol. E85-C, no. 7, pp. 1516-22, July 2002.
[17] Akihiko Hirata, Tadasi Minotani, and Tadao Nagatsuma, “A 120-GHz microstrip
antenna monolithically integrated with a photodiode on Si,” Japanese Journal
of Applied Physics, Part 1, vol. 41, no. 3A, pp. 1390-1394, March 2002.
[16] Akihiko Hirata, Hiromu Ishii, and Tadao Nagatsuma, “Design and characterization
of a 120-GHz millimeter-wave antenna for integrated photonic transmitters,”
IEEE Transactions on Microwave Theory and Techniques, vol. 49, no. 11,
pp. 2157-62, November 2001.
[15] Akihiko Hirata, and Tadao Nagatsuma “A 120-GHz millimeter-wave antenna
for integrated photonic transmitter,” Electronics Letters, vol. 37, no.
24, pp. 1460-1461, November 2001.
[14] Tadao Nagatsuma, Mitsuru Shinagawa, Nabil Sabri, Ai-ichiro Sasaki,
Yacob Royter, and Akihiko Hirata, “1.55-μm photonic systems for microwave
and millimeter-wave measurement,” IEEE Transactions on Microwave Theory
and Techniques, vol. 49, no. 10, pp. 1831-1839, October 2001.
[13] Tadao Nagatsuma, Tadao Ishibashi, Akihiko Hirata, Yasuhiro Hirota,
Tadashi Minotani, Aiichiro Sasaki, and Hiroshi Ito, “Characterisation of
uni-travelling-carrier photodiode monolithically integrated with matching
circuit,” Electronics Letters, vol. 37, no. 20, pp. 1246-1247, September
2001.
[12] Hiroshi Ito, Yasuhiro Hirota, Akihiko Hirata, Tadao Nagatsuma, and
Tadao Ishibashi, “11 dBm photonic millimetre-wave generation at 100 GHz
using uni-travelling-carrier photodiodes,” Electronics Letters, vol. 37,
no. 20, pp. 1225-1226, September 2001.
[11] Akihiko Hirata, Tomofumi Furuta, and Tadao Nagatsuma, “Monolithically
integrated Yagi-Uda antenna for photonic emitter operating at 120 GHz,”
Electronics Letters, vol. 37, no. 18, pp. 1107-1109, August 2001.
[10] Akihiko Hirata, Tomohiko Maeda, Katsuyuki Machida, Masahiko Maeda,
Kanji Yasui, and Hakaru Kyuragi, “Effect of thinning a WSiN/WSix barrier
layer on its barrier capability,” Journal of Vacuum Science & Technology
B, vol. 19, no. 3, pp. 788-793, May-June 2001.
[9] H. Ishii, S. Yagi, K. Saito, A. Hirata, K. Kudo, M. Yano, T. Nagatsuma,
K. Machida, and H. Kyuragi, ”Microfabrication technology for high-speed
Si-based systems,” Proceedings of the SPIE - The International Society
for Optical Engineering, vol. 4230, pp. 43-52, November, 2000.
[8] Akihiko Hirata, Katsuyuki Machida, Hakaru Kyuragi, and Masahiko Maeda,
“A electrostatic micromechanical switch for logic operation in multichip
modules on Si,” Sensors and Actuators A (Physical), vol. A80, no. 2, pp.
119-125, March 2000.
[7] Akihiko Hirata, Katsuyuki Machida, Nobuyoshi Awaya, Hakaru Kyuragi,
and Masahiko Maeda, “Copper Damascene interconnection with Tungsten Silicon
Nitride Diffusion Barrier Formed by Electron Cyclotron Resonance Plasma
Nitridation,” Japanese Journal of Applied Physics, vol. 38, Part 1, pp.
2355-2359, April 1999.
[6] Akihiko Hirata, Katsuyuki Machida, Satoru Maeyama, Yoshio Watanabe
and Hakaru Kyuragi, “Diffusion Barrier Mechanism of Extremely Thin Tungsten
Silicon Nitride formed by ECR Plasma Nitridation,” Japanese Journal of
Applied Physics, vol. 37, Part 1, pp. 1251-1225, March 1998.
[5] Akihiko Hirata, Tetsuo Hosoya, Katsuyuki Machida, Hakaru Kyuragi and
Hideo Akiya, “Electrical characteristics of a WSix contact electrode with
a WSixN diffusion barrier formed by using electron cyclotron resonance
plasma nitridation,” Journal of the Electrochemical Society, vol. 144,
no. 11, pp. 3993-8, November 1997.
[4] Akihiko Hirata, Tetsuo Hosoya, Katsuyuki Machida, Hidetoshi Takaoka
and Hideo Akiya, “A WSixN diffusion barrier formed with electron cyclotron
resonance nitrogen plasma,” Journal of the Electrochemical Society, vol.
143, no. 11, pp. 3747-51, November 1996.
[3] Akihiko Hirata, Koichiro Saiki and Atsushi Koma, “Strontium and SrO
epitaxy on hydrogen-terminated Si(111),” Appl. Phys. Lett. vol. 65, pp.
3182-3184, December 1994.
[2] Akihiko Hirata, Koichiro Saiki Atsushi Koma and Atsushi Ando, “Electronic
structure of a SrO-terminated SrTiO3(100) surface,” Surface Science,” vol.
319, pp. 267-271, November 1994.
[1] Akihiko Hirata, Atsushi Ando, Koichiro Saiki and Atsushi Koma, “Characterization
of surface defects formation in strontium titanate(100),” Surface Science,
vol. 310, pp. 89-94, May 1994.
- 国際会議
- [117] Akihiko Hirata, Issei Watanabe, Akifumi Kasamatsu, and Norihiko Sekine,
"Suppression of Multiple Reflection by Metasurface Absorber in 120-GHz-band
Close-Proximity Wireless Link," 2022 International Symposium on Antennas
and Propagation (ISAP), pp. 491-492, November 2022.
[116] Shoichiro Furukawa, Ryo Furukawa, Akihiko Hirata, "Evaluation
of Availability of 300-GHz-Band Wireless Fronthaul Link during Torrential
Rain," 2022 IEEE International Workshop on Electromagnetics: Applications
and Student Innovation Competition (iWEM2022), pp. 112-113, August, 2022.
[115] Shunta Takagi, Keisuke Matsui and Akihiko Hirata, "Reflection
and Shadowing Loss due to Human Body in 300-GHz-band Wireless Link,"
2022 IEEE International Workshop on Electromagnetics: Applications and
Student Innovation Competition (iWEM2022), pp. 126-127, August, 2022.
[114] Tomohiro Kumaki, Satoshi Ozeki, Akihiko Hirata, and Osamu Kagaya,
"120-GHz-band Close Proximity Wireless Communication Using Metamaterial
Integrated Glass Substrate," 2022 IEEE International Workshop on Electromagnetics:
Applications and Student Innovation Competition (iWEM2022), pp. 87-88,
August, 2022.
[113] Keisuke Matsui, Shunta Takagi and Akihiko Hirata, "Evaluation
of Attenuation by Tree in 300-GHz-band Wireless Communications," 2022
IEEE International Workshop on Electromagnetics: Applications and Student
Innovation Competition (iWEM2022), pp. 29-30, August, 2022.
[112] Masafumi Suzuki, Kota Fukazawa, Akihiko Hirata, Hiroshi Murata, and
Masato Mizukami, "Study on MIMO Communication using Microwave Guided-Modes
Propagating along PVC Pipe Wall," 2022 IEEE International Workshop
on Electromagnetics: Applications and Student Innovation Competition (iWEM2022),
pp. 55-56, August, 2022.
[111] Akihiko Hirata, "Modelling of Terahertz Antenna and Propagation
Characteristics for Beyond 5G Mobile Communication," THE 4TH INTERNATIONAL
CONFERENCE ON COMPUTER COMMUNICATION AND THE INTERNET, Key Note Speech
II, July 2022
[110] Akihiko Hirata, Koji Suizu, Norihiko Sekine, Issei Watanabe, Akifumi
Kasamatsu, "Measurement of Glass Complex Permittivity at 200-500 GHz
for THz Propagation Simulation," 2020 International Symposium on Antennas
and Propagation (ISAP2020), 3G4-4, January 2021.
[109] Masaki Ushio, Futa Tokoro, Akihiko Hirata, Taiki Higashimoto, Yuta
Uemura, Tadao Nagatsuma, Norihiko Sekine, Issei Watanabe, Akifumi Kasamatsu,
"10-Gbit/s Data Transmission over Dielectric Sheet for 120-GHz-band
Sheet LAN," 2020 International Symposium on Antennas and Propagation
(ISAP2020), 3G3-8, January 2021.
[108] Ryo Okumura and Akihiko Hirata, "Automatic Planning of 300-GHz-Band
Wireless Backhaul Link Deployment in Metropolitan Area," 2020
International Symposium on Antennas and Propagation (ISAP2020), 3G3-7,
January 2021.
[107] Masaaki Urahashi and Akihiko Hirata, "Complex Permittivity Evaluation
of Building Materials at 200-500 GHz Using THz-TDS," 2020 International
Symposium on Antennas and Propagation (ISAP2020), 3G3-6, January 2021.
[106] Koichiro Itakura, Akihiko Hirata, Taiki Higashimoto, Yuta Uemura,
Tadao Nagatsuma, Issei Watanabe, Norihiko Sekine, Akifumi Kasamatsu, "Pass
Bandwidth Extension of 120-GHz-Band SRR Filter by Coupling Lattice Pattern
Substrate," International Topical Meeting on Microwave Photonics,
Th-P27, November 2020.
[105] (Invited) Akihiko Hirata, Koji Suizu, Yoshikazu Sudo, Issei Watanabe,
Norihiko Sekine, and Akifumi Kasamatsu, "Non-destructive Inspection
of Concrete Surface Crack Using Near-Field Scattering," 2020 IEEE
International Symposium on Radio-Frequency Integration Technology (RFIT),
FR4C_2, September, 2020.
[104] Akihiko Hirata, Katsumi Fujii, Norihiko Sekine, Issei Watanabe, Akifumi
Kasamatsu, "International Workshop on Photonics Applied to Electromagnetic
Measurements," International Workshop on Photonics Applied to
Electromagnetic Measurements, 4-2,November, 2019.
[103] K. Itakura, A. Hirata, M. Sonoda, T. Higashimoto, T. Nagatsuma, T.
Tomura, J. Hirokawa, N. Sekine, I. Watanabe, A. Kasamatsu,"Investigation
of plasmon hybridization between slot-ring resonator absorber and lattice
pattern substrate," 2019 International Symposium on Antennas and Propagation
(ISAP), WA1D-4, Octorber, 2019.
[102] Akihiko Hirata, Katsumi Fujii, Norihiko Sekine, Issei Watanabe, and
Akifumi Kasamatsu, "Measurement of Reflection and Transmission Characteristics
of Glasses at 300 GHz," 2019 International Symposium on Antennas and
Propagation (ISAP), TP2F-1, Octorber, 2019.
[101] Akihiko Hirata, "Antenna and propagation study for THz Communications,"
Workshop on TeraHertz end-to-end wireless systems supporting ultra high
data Rate applications (ThoR), P-3, September, 2019
[100] Akihiko Hirata, "THz propagation antennas (including THz standardization),"
Workshop on TeraHertz end-to-end wireless systems supporting ultra high
data Rate applications (ThoR), C-6, September, 2019.
[99] Akihiko Hirata, Makoto Nakashizuka, Koji Suizu, and Yoshikazu Sudo,
“Improvement of Detection in Concrete Surface Cracks Covered with Paper
by Using Standing Wave of 77-GHz-Band Millimeter-Wave,” 2019 IEEE MTT-S
International Microwave Symposium (IMS), Tu3G-2, June 2019.
[98] Jiro Hirokawa, Takashi Tomura, Akihiko Hirata, and Tadao Nagatsuma
“Progress of Plate-Laminated Waveguide Slot Array Antennas by Diffusion
Bonding in 60GHz, 120GHz and 350GHz Bands,” 2018 Asia-Pacific Microwave
Conference (APMC), TH1-C1-1, November 2018.
[97] Akihiko Hirata, and Jiro Hirokawa, “Terahertz Absorber Technologies
for Close-Proximity Wireless System,” 2018 Asia-Pacific Microwave Conference
(APMC), TH1-C1-4, November 2018.
[96] Akihiko Hirata, Makoto Nakasizuka, and Keiichi Sudo, “Non-destructive
Crack Detection and Classification for Waterproof-coated Concrete Surfaces
by Millimeter-wave Imaging,” European Radar Conference (EuRAD) 2018, pp.
265-268, September 2018.
[95] Akihiko Hirata, “Non-destructive Detection of Concrete Cracks Covered
with Waterproof Coating by Millimeter-wave Imaging,” Progress in Electromagnetics
Research Symposium (PIERS) 2018, 3P-14b-8, August 2018.
[94] Akihiko Hirata and Jiro Hirokawa, “Absorber integrated planar slot
array antenna for a 120-GHz-band close-proximity wireless system,” the
2017 International Symposium on Antennas and Propagation (ISAP2017), 2.1173,
October 2017.
[93] Ai-ichiro Sasaki, Akinori Furuya, Akihiko Hirata, and Hiroki Morimura,
“Design of Polarization Optics for Electrooptic Sensors,” International
Symposium on Optical Memory 2016 (ISOM'16), Mo-F-01, October 2016.
[92] M. Shoji, andA. Hirata, “Ultrasonic Guided Wave Testing of Anchor
Rods Embedded in Soil,” IEEE International Ultrasonics Symposium, 5H-2,
September 2016.
[91] A. Sasaki, A. Hirata, and H. Morimura, “Magnetic-Field Amplification
by a Double Coil,” 2016 IEEE International Symposium on Antennas and Propagation/USNC-URSI
National Radio Science meeting, 1051, June 2016.
[90] (Invited) A. Hirata, J. Takeuchi, and J. Hirokawa “Alignment Control
of 120GHzBand Waveguide Slot Arrays Using Beam Tilting 1D Array Antennas,”
European Conference on Antenna and Propagation, CS22a-1, Davos, April 2016.
[89] H. Hamada, T. Kosugi, H.-J. Song, M. Yaita, A. E. Moutaouakil, H.
Matsuzaki, and A. Hirata, “300-GHz band 20-Gbps ASK transmitter module
based on InP-HEMT MMICs,” 2015 IEEE Compound Semiconductor IC Symposium
(CSICS 2015), M.2, New Orleans, USA, October 2015.
[88] D. Kitayama, H.-J. Song, M. Yaita, A. Hirata, “Experimental Demonstration
of Metamaterial Flat Lens at F-band,” International Conference on Infrared,
Millimeter, and Terahertz Waves (IrMMW-THz 2015), M3E-5,Hong Kong, China,
August 2015.
[87] T. Tajima, J.-Y. Kim, M. Nakamura, H.-J. Song, K. Ajito, and A. Hirata,
”Stable CW THz Spectroscopy with PLC-LN Hybrid Phase Modulator,” International
Conference on Infrared, Millimeter, and Terahertz Waves (IrMMW-THz 2015),
T3C-3, Hong Kong, China, August 2015.
[86] (Invited) A. Hirata and J. Takeuchi, “120-GHz-band Wireless Link Antenna
Technologies for Polarization Multiplexing,” European Conference on Antenna
and Propagation, C10 60GHz.6, Lisbon, April 2015.
[85] T. Kosugi, H. Hamada, H. Takahashi, H-J. Song, A. Hirata, H. Matsuzaki,
H. Nosaka, ”250-300 GHz waveguide module with ridge-coupler and InP-HEMTIC,”
2014 Asia-Pacific Microwave Conference (APMC), Sendai, Japan, pp. 1133-1135,
December 2014.
[84] Y. Koda, S. Hisatake, K. Jae-Young Kim, A. Hirata, K. Ajito, T. Nagatsuma,”
Precise Phase Measurement of Continuous Terahertz-Wave Based on Balanced
Self-Heterodyne Technique and Its Application to Phase-Contrast Imaging,”
2014 Asia-Pacific Microwave Conference (APMC), pp. 1079-81, December 2014.
[83] K. Hashimoto, J. Takeuchi, J. Hirokawa1, A. Hirata, and M.Ando, ”Design
and Fabrication of a Dual-polarization Corporate-feed Waveguide 32x32-slot
Array Antenna for 120 GHz Band,“ International Symposium on Antennas and
propagation, WE1D-03, Kaohsiung, Taiwan, December 2014.
[82] (Invited) A. Hirata, and J. Takeuchi, H. Takahashi, and J. Hirokawa,
“120-GHz-band Wireless Communications Field Trials,” the 39th International
Conference on Infrared, Millimeter, and Terahertz Waves (IrMMW-THz 2014),
R4/A-38-2, Tucson, USA, September 2014.
[81] J. Hirokawa, D. Kim, M. Ando, J. Takeuchi, A. Hirata, “43 dBi gain,
60% efficiency and 10% bandwidth hollow-waveguide slot array antenna in
the 120 GHz band,” 2013 Asia-Pacific Microwave Conference (APMC 2013),
pp. 307-309, Soul, Korea, December 2013.
[80] A. Hirata, J. Takeuchi, D. Kim, and J. Hirokawa, “10-Gbit/s dual channel
transmission of 120-GHz-band wireless link using planar slot array antennas,”
2013 European Microwave Conference, pp. 744-747, Nurnberg, German, October,
2013.
[79] N. Q. Duong, M. Sano, J. Hirokawa, M. Ando, J. Takeuchi, A. Hirata,
“Design of a Linear Array of Transverse Slots without Cross-polarization
to any Directions on a Hollow Rectangular Waveguide,” International Symposium
on Antennas and Propagation, pp.918-920, Nanjing, China, October 2013.
[78] D.-J. Kim, J. Hirokawa, M. Ando, J. Takeuchi and A. Hirata, "4x4-element
Corporate-feed Plate-laminated Waveguide Slot Array Antenna with Cavities
for the 120 GHz-band", Proc. of IEEE AP-S International Symposium,
pp. 230-231, Orlando, FL, USA, July 2013.
[77] J. Hirokawa, D.-J. Kim, M. Ando, J. Takeuchi and A. Hirata, "Wideband
Waveguide Slot Array Antennas with Corporate-feed in 120GHz and 350GHz
Bands, " 2013 International Symposium on Electromagnetic Theory EMTS
2013, pp. 866-867, Hiroshima, Japan, May 2013.
[76] T. Kosugi, H. Takahashi, A. Hirata, and K. Murata, “Broadband InP
MMICs for 120 GHz Wireless Data Communications,” 2013 IEEE Radio and Wireless
Symposium (RWS) pp. 49-51, 2013.
[75] J. Takeuchi, A. Hirata, H. Takahashi, and N. Kukutsu, “20-Gbit/s unidirectional
wireless system using polarization multiplexing for 12-ch HDTV signal transmission,”
2012 Asia Pacific Microwave Conference (APMC 2012), pp.142-144, 2012.
[74] H. Takahashi, A. Hirata, J. Takeuchi, N. Kukutsu, T. Kosugi, and K.
Murata, “120-GHz-band 20-Gbit/s transmitter and receiver MMICs using quadrature
phase shift keying,” 2012 7th European Microwave Integrated Circuit Conference
(EuMIC), pp. 313-16, 2012.
[73] D. Kim, J. Hirokawa, M. Ando, T. Takada, T. Nagatsuma, J. Takeuchi,
and A. Hirata, “Design and Measurement of Plate Laminated Waveguide Slot
Array Antennas in Millimeter and Sub-millimeter Wave Regions,” Asia-Pacific
Microwave Photonics Conference (APMP) 2012, WD-4, 2012.
[72] (Invited) A. Hirata, H. Takahashi, J. Takeuchi, and N. Kukutsu, “Technology
and Standardization Trends for Upper-Millimeter-Wave Wireless Links,” Thailand–Japan
MicroWave 2012, TH4-2, August 2012.
[71] A. Hirata, J. Takeuchi, H. Takahashi, and N. Kukutsu, “Rain attenuation
fade-slope characteristics of 120-GHz-band wireless links,” 2012 IEEE Antennas
and Propagation Society International Symposium and USNC/URSI National
Radio Science Meeting, 314.1, July,2012.
[70] (Invited) A. Hirata, H. Takahashi, J. Takeuchi, N. Kukutsu, and T.
Nagatsuma, “Photonic and Electronic Technologies for 10-Gbit/s Outdoor
Data Transmission Using 120-GHz-Band Wireless Link,” Asia-Pacific Microwave
Photonics Conference (APMP) 2012, ThB-2, April 2012.
[69] (Invited) A. Hirata, H. Takahashi, J. Takeuchi, N. Kukutsu, K. Dongjin,
and J. Hirokawa, “120-GHz-band antenna technologies for over-10-Gbps wireless
data transmission,” 2012 6th European Conference on Antennas and Propagation
(EuCAP), pp. 2564-2568, 2012.
[68] J. Takeuchi, A. Hirata, H. Takahashi, and N. Kukutsu, “10-Gbit/s Bi-directional
wireless data transmission system using 120-GHz-band ortho-mode transducers,”
2012 IEEE Radio and Wireless Symposium (RWS), pp. 63-66, 2012.
[67] A. Hirata, J. Takeuchi, H. Takahashi, N. Kukutsu, H. Nishikawa, A.
Irino, T. Nakayama, and N. Sudo, “Space division multiplexing of 120-GHz-band
wireless links using high-gain antennas,” 2011 41st European Microwave
Conference (EuMC), pp. 25-28, 2011.
[66] H. Takahashi, T. Kosugi, A. Hirata, J. Takeuchi, K. Murata, and N.
Kukutsu, “Hermetic Sealing technique for F-band waveguides and packages,”2011
41st European Microwave Conference (EuMC), pp. 269-272, 2011.
[65] M. Kawashima, T. Seki, A. Hirata, and T. Kosugi, “Millimeter-wave/terahertz
circuits and transceivers for broadband wireless systems,”2011 IEEE 54th
International Midwest Symposium on Circuits and Systems (MWSCAS 2011),
August 2011.
[64] J. Takeuchi, H. Takahashi, A. Hirata, and N. Kukutsu, “10-Gbit/s bi-directional
and 20-Gbit/s uni-directional data transmission over a 120-GHz-band wireless
link using a finline ortho-mode transducer,” 2010 Asia Pacific Microwave
Conference, pp. 195-198, 2010.
[63] K. Ajito, H. -J. Song, A. Hirata, A. Wakatsuki, Y. Muramoto, N. Shigekawa,
T. Kumashiro, D. Asa, T. Nagatsuma, N. Kukutsu, and Y. Kado, “Continuous-wave
terahertz spectroscopic imaging at over 1 THz for pharmaceutical applications,”
2010 35th International Conference on Infrared Millimeter and Terahertz
Waves (IRMMW-THz), Tu-D1.3, Rome, Italy 5-10, September 2010.
[62] A. Hirata, T. Kosugi, H. Takahashi, J. Takeuchi, K. Murata, N. Kukutsu,
Y. Kado, S. Okabe, T. Ikeda, F. Suginosita, K. Shogen, H. Nishikawa, A.
Irino, T. Nakayama, and N. Sudo, “5.8-km 10-Gbps data transmission over
a 120-GHz-band wireless link,” 2010 IEEE International Conference on Wireless
Information Technology and Systems (ICWITS), 207. 1, 2010.
[61] N. Kukutsu, A. Hirata, M. Yaita, K. Ajito, H. Takahashi, T. Kosugi,
H. Song, A. Wakatsuki, Y. Muramoto, T. Nagatsuma, Y. Kado, “Toward practical
applications over 100 GHz,” 2010 IEEE MTT-S International Microwave Symposium
Digest (MTT), TH1A-5, 2010.
[60] H. Takahashi, T. Kosugi, A. Hirata, K. Murata, and N. Kukutsu, “10-Gbit/s
QPSK modulator and demodulator for a 120-GHz-band wireless link,”2010 IEEE
MTT-S International Microwave Symposium Digest (MTT), pp. 632-635, 2010.
[59] S. Okabe, T. Ikeda, F. Suginoshita, K. Shogen, A. Hirata, M. Yaita,
N. Kukutsu, and Y. Kado, “10-Gbps Forward Error Correction System for 120-GHz-band
Wireless Transmission,” 2010 IEEE Radio and Wireless Symposium (RWS 2010),
pp. 472-475, 2010.
[58] T. Nagatsuma, H.-J. Song, Y. Fujimoto, K. Miyake, A. Hirata, K. Ajito,
A. Wakatsuki, T. Furuta, N. Kukutsu, Y. Kado “Giga-bit wireless link using
300-400 GHz bands,” 2009 International Topical Meeting on Microwave Photonics.
MWP 2009, pp.4, October, 2009.
[57] N. Kukutsu, A. Hirata, T. Kosugi, H. Takahashi, T. Nagatsuma, Y. Kado,
H. Nishikawa, A. Irino, T. Nakayama, and N. Sudo, “10-Gbit/s wireless transmission
systems using 120-GHz-band photodiode and MMIC technologies,” 2009 Annual
IEEE Compound Semiconductor Integrated Circuit Symposium, pp. 83-86,October,
2009.
[56] H.-J. Song, K. Ajito, A. Hirata, A. Wakatsuki, T. Furuta, N. Kukutsu,
and T. Nagatsuma, “Multi-gigabit wireless data transmission at over 200-GHz,”
34th International Conference on Infrared, Millimeter, and Terahertz Waves.
IRMMW-THz 2009, September, 2009.
[55] H. Takahashi, T. Kosugi, A. Hirata, K. Murata, and N. Kukutsu, “120-GHz-band
BPSK modulator and demodulator for 10-Gbit/s data transmission,”2009 IEEE
MTT-S International Microwave Symposium Digest (MTT), pp. 557-560, 2009.
[54] A. Hirata, H. Takahashi, T. Kosugi, K. Murata, N. Kukutsu, and Y.
Kado, “Rain attenuation statistics for a 120-GHz-band wireless link,” 2009
IEEE MTT-S International Microwave Symposium Digest (MTT), pp. 933-936,
2009.
[53] A. Hirata, H. Takahashi, T. Kosugi, N. Kukutsu, and Y. Kado, “Transmission
characteristics of 120-GHz-band wireless link with forward error correction,”
Global Symposium on Millimeter Waves 2009, SS3-3, 2009.
[52] N. Kukutsu, A. Hirata, H. Takahashi, T. Kosugi, and Y. Kado, “Compact,
Low-power, 120-GHz-band Wireless Systems for 10-Gbit/s Data Transmission,
”Global Symposium on Millimeter Waves 2009, SS3-2, 2009.
[51] (Invited) A. Hirata, “Sub-THz technologies for ultra-broadband wireless
communications,” 2009 Global e-Workshop on Semiconductor Technology, S2-1,
2009.
[50] A. Hirata, N. Iai, R. Yamaguchi, H. Takahashi, T. Kosugi, K. Murata,
N. Kukutsu, Y. Kado, S. Kimura, S. Okabe, H. Ikegawa, H. Nishikawa, T.
Nakayama, and T. Inada, “10-Gbit/s data transmission with forward error
correction using a 120-GHz-band wireless link,” 2008 Asia Pacific Microwave
Conference, A3-11, 2008.
[49] (Invited) A. Hirata, T. Kosugi, T. Nagatsuma, and Y. Kado, “Recent
Advances and Future Prospects for a 120-GHz-Band Wireless Link,” Wireless
Personal Multimedia Communications Symposium, SS1-1, September, 2008.
[48] H. Takahashi, T. Kosugi, A. Hirata, K. Murata, and N. Kukutsu, “120-GHz-band
Low-noise amplifier with 14-ps group-delay variation for 10-Gbit/s data
transmission, “ 38th European Microwave Conference (EuMC), pp. 1457-1460,
2008.
[47] N. Kukutsu, A. Hirata, T. Kosugi, H. Takahashi, R. Yamaguchi, T. Nagatsuma,
and Y. Kado, “10-Gbit/s wireless link using 120-GHz-band MMIC technologies,”
33rd International Conference on Infrared, Millimeter and Terahertz Waves
(IRMMW-THz 2008), 1451K, 2008.
[46] N. Kukutsu, A. Hirata, T. Kosugi, H. Takahashi, R. Yamaguchi, T. Nagatsuma,
and Y. Kado, “10-Gbit/s wireless link systems using the 120-GHz band,”
2008 IEEE Antennas and Propagation Society International Symposium, 2008.
[45] R. Yamaguchi, A. Hirata, T. Kosugi, H. Takahashi, N. Kukutsu, T. Nagatsuma,
Y. Kado, H. Ikegawa, H. Nishikawa, and T. Nakayama, “10-Gbit/s MMIC wireless
link exceeding 800 meters,” 2008 IEEE Radio and Wireless Symposium (RWS
'08), pp. 695-698, 2008.
[44] T. Nagatsuma, A. Hirata, N. Kukutsu, and Y. Kado, “Multiplexed transmission
of uncompressed HDTV signals using 120-GHz-band millimeter-wave wireless
link,” 2007 International Topical Meeting Microwave Photonics, pp. 237-240,
2007.
[43] N. Kukutsu, A. Hirata, T. Kosugi, H. Takahashi, Y. Kado, T. Nagatsuma,
“Photonics and Electronics Technologies for 10-Gbit/s Wireless Link,” International
Symposium on Information and Computer Elements (ISICE) 2007，pp. 25-28,
San Antonio, USA, September 2007.
[42] T. Nagatsuma, A. Hirata, N. Shimizu, Ho-Jin Song, and N. Kukutsu,
“Photonic generation of millimeter and terahertz waves and its applications,”19th
International Conference on Applied Electromagnetics and Communications
(ICECom'07), pp. 145-148, October, 2007.
[41] (Invited) Akihiko Hirata, Tadao Nagatsuma, Toshihiko Kosugi, Hiroyuki
Takahashi, Ryoichi Yamaguchi, Naofumi Shimizu, Naoya Kukutsu, Koichi Murata,
Yuichi Kado, Hidehiko Ikegawa, Hiroshi Nishikawa, and Toshihiro Nakayama,
“10-Gbit/s wireless communications technology using sub-terahertz waves,”
SPIE Optics East, vol. 6772, no. 1, pp. 1-11, September, 2007.
[40] T. Nagatsuma, A. Hirata, N. Shimizu, H-J. Song, H. Nakajima, T. Furuya,
H. Ito, “Photonic Generation of Millimter Waves and Its Applications,”
Asia-Pacific Microwave Photonics Conference (AP-MWP 2007), April 2007.
[39] H. Takahashi, T. Kosugi, A. Hirata, K. Murata, and T. Nagatsuma, “Tunable
coplanar filter for F-band wireless receivers,” 2006 Asia Pacific Microwave
Conference, pp. 1470-1473, 2006.
[38] T. Kosugi, M. Tokumitsu, K. Murata, T. Enoki, H. Takahashi, A. Hirata,
and T. Nagatsuma, “120-GHz Tx/Rx waveguide modules for 10-Gbit/s wireless
link system,” 2006 IEEE Compound Semiconductor Integrated Circuit Symposium,
2006.
[37] T. Nagatsuma, A. Hirata, R. Yamaguchi, H. Takahashi, T. Kosugi, M.
Tokumitsu, K. Murata, T. Furuya, and H. Ito, “Sub-Terahertz Wireless Communications
Technologies,” IEEE Lester Eastman Conference on High Performance Devices，SectionII-3，August
2006
[36] H. Ito, T. Furuta, T. Kosugi, A. Hirata, K. Maruyama, H. Takahashi,
Y. Muramoto, M. Tokumitsu, Y. Sato, T. Nagatsuma, “Rectangular Waveguide
Output Uni-Traveling-Carrier Photodiode Module Integrating a Power Amplifier
for 10-Gbit/s Wireless Transmission in the 125-GHz Band,” Asia -Pacific
Microwave Photonic (AP-MWP 2006)，G-3, pp. 253-256，April 2006.
[35] T. Nagatsuma, A. Hirata, Y. Sato, R. Yamaguchi, H. Takahashi, T. Kosugi,
M. Tokumitsu, Y. Sugawara, T. Furuya, and H. Ito, “120-GHz-Band Wireless
Links with 10-Gb/s Capability,” Topical Symposium on Millimeter Waves (TSMMW2006)，p.67，February
2006.
[34] (Invited) A. Hirata, T. Kosugi, T. Furuta, H. Ito, M. Tokumitsu, and
T. Nagatsuma, “Photonic devices for ultra-broadband wireless link, sensing
and measurement system,” 2005 IEEE International Topical Meeting on Microwave
Photonics, pp. 67-70, 2005.
[33] T. Nagatsuma, A. Hirata, Y. Sato, R. Yamaguchi, H. Takahashi, T. Kosugi,
M. Tokumitsu, Y. Sugawara, T. Furuya, and H. Ito, “Sub-Terahertz Wireless
Communications Technologies,” International Workshop on Terahertz Technology
(TeraTech 2005)，16S-3, pp. 9-12，November, 2005.
[32] T. Nagatsuma, A. Hirata, Y. Sato, R. Yamaguchi, H. Takahashi, T. Kosugi,
M. Tokumitsu, H. Sugahara, T. Furuta, and H. Ito,“Sub-terahertz wireless
communications technologies,”18th International Conference on Applied Electromagnetics
and Communications, Dubrovnik, Croatia, pp. 141-144, October, 2005.
[31] T. Nagatsuma, A. Hirata, R. Yamaguchi, Y. Sato, T. Kosugi, M. Tokumitsu,
T. Furuta, and H. Ito, “Millimeter-wave photonic technologies for 10-Gbit/s
wireless link systems,”10th International Symposium on Microwave and Optical
Technology (ISMOT-2005), Fukuoka, Japan, pp. 205, August,2005.
[30] (Invited) A. Hirata, T. Kosugi, M. Harada, T. Shibata, H. Ito and
T. Nagatsuma, “Exploring over-100-GHz Technology for 10-Gbit/s Wireless
Link,” The 6th Topical Symposium on Millimeter Waves 2004, pp. 51-54, 2004.
[29] H. Ito, T. Furuta, A. Hirata, T. Kosugi, Y. Muramoto, M. Tokumitsu,
T. Nagatsuma, and T. Ishibashi, “Pre-amplifier-integrated uni-traveling-carrier
photodiode module with a rectangular waveguide-output port for operation
in the 120-GHz band,”2004 IEEE LEOS Annual Meeting Conference, Rio Grande,
Puerto Rico, vol. 1, pp. 128-129, 2004.
[28] T. Nagatsuma, A. Hirata, T. Kosugi, H. Ito, “Over-100-GHz Millimeter-Wave
Technologies for 10-Gbit/s Wireless Link,” IEEE Radio & Wireless Conference
(RAWCON 2004), Workshop，WM1，September, 2004.
[27] T. Kosugi, M. Tokumitsu, T. Enoki, M. Muraguchi, A. Hirata, and T.
Nagatsuma, “120-GHz Tx/Rx chipset for 10-Gbit/s wireless applications using
0.1 μm-gate InP HEMTs, ”IEEE Compound Semiconductor Integrated Circuit
Symposium, pp. 171-174, Monterey, CA, USA, October, 2004.
[26] A. Hirata, H. Takahashi, K. Okamoto, and T. Nagatsuma, “Low-phase
noise photonic millimeter-wave generator using an AWG integrated with a
3-dB combiner,”2004 IEEE International Topical Meeting on Microwave Photonics,
pp. 209-212, October, 2004.
[25] T. Nagatsuma, A. Hirata, M. Harada, H. Ishii, K. Machida, T. Minotani,
H. Ito, T. Kosugi, and T. Shibata, “Millimeter-wave photonic integrated
circuit technologies for high-speed wireless communications applications,”
2004 IEEE International Solid-State Circuits Conference, vol. 1, pp. 448-449,
February, 2004.
[24] A. Hirata, and T. Nagatsuma, “Design and characterization of ultra-broadband
photonic emitters for microwave and millimeter-wave applications,” The
5th Japan-Korea Joint Workshop on Microwave & Millimeter-wave Photonics
2004, pp. 103-106, January, 2004.
[23] A. Hirata, T. Kosugi, T. Shibata, T. Furuta, H. Ito and T. Nagatsuma,
“Waveguide-output photodiode module integrated with HEMT amplifier for
10-Gbit/s wireless link,” International Symposium on Contemporary Photonics
Technology 2004, pp. 63-66, Tokyo, Japan, 14-16 January 2004.
[22] M. Mizuno, A. Hirata, K. Kawase, C. Otani, and T. Nagatsuma, “Analysis
of Pheochromocytoma (PC12) membrane potential under the exposure to millimeter-wave
radiation, Symposium on Portable Synchrotron Light Sources and Advanced
Applications,” no. 176, pp. 164-166, Kusatsu, Japan, January, 2004.
[21] A. Hirata, T. Kosugi, T. Shibata, and T. Nagatsuma,“High-directivity
photonic emitter for 10-Gbit/s wireless link,” 2003 IEEE International
Topical Meeting on Microwave Photonics, pp. 35-38, September 2003.
[20] T. Nagatsuma, A. Hirata, and H. Ito,“Generation of continuous millimeter
and sub-millimeter waves using photonic techniques,” 2003 Digest of the
LEOS Summer Topics Meetings, Vancouver, BC Canada, TuC4.4/59-60,July 2003.
[19] T. Kosugi, T. Shibata, T. Enoki, M. Muraguchi, A. Hirata, T. Nagatsuma,
and H. Kyuragi, “A 120-GHz millimeter-wave MMIC chipset for future broadband
wireless access applications,” IEEE MTT-S International Microwave Symposium-IMS
2003 vol. 1, pp. 129-132, Philadelphia, USA, June 2003.
[18] T. Nagatsuma, A. Hirata, and T. Minotani,“120-GHz millimeter-wave
photonics for broadband wireless systems,”Ultrafast Electronics and Optoelectronics,
pp. 104-107, Washington, D.C., USA, January 2003.
[17] A. Hirata, M. Harada, K. Sato, and T. Nagatsuma,“Millimeter-wave photonic
wireless link using low-cost generation and modulation techniques,”2002
IEEE International Topical Meeting on Microwave Photonics, pp. 37-40, November
2002.
[16] (Invited) A. Hirata, T. Minotani, and T. Nagatsuma,“Millimeter-wave
photonics for 10-Gbit/s wireless links,”2002 IEEE/LEOS Annual Meeting Conference,
vol. 2, pp. 477-478, November 2002.
[15] T. Nagatsuma, N. Sahri, A. Hirata, Y. Royter, and A. Sasaki, “Millimeter-wave
network analyzers based on photonic techniques,” 2002 International Microwave
Symposium, vol. 3, pp. 1497-1500, , Seattle USA, June 2002.
[14] T. Nagatsuma, A. Hirata, and M. Harada, “Recent Progress in Millimeter-Wave
Photonic Component Technologies for Broadband Wireless Access Systems,”
Workshop in 2002 International Microwave Symposium, , Seattle USA, June
2002.
[13] A. Hirata, M. Harada, and T. Nagatsuma,“3.0-Gigabit/s Wireless Data
Transmission Using a Millimeter-Wave Photonic Techniques,” The 3rd Japan-Korea
Joint Workshop on Microwave and Millimeter-Wave Photonics 2002, pp. 95-98,Tokyo
japan, January 2002.
[12] A. Hirata, M. Harada, T. Nagatsuma, “Multi-gigabit/s wireless links
using millimeter-wave photonic techniques,”2001 IEEE International Topical
Meeting on Microwave Photonics, pp. 77-80, January 2002.
[11] T. Ishibashi, S. Kodama, T. Ito, Y. Hirota, A. Hirata, T. Nagatsuma,
and H. Ito, “Ultrahigh Speed Applications of Uni-traveling-Carrier Photodiodes,”
The 8th International Workshop on Femtosecond Technology，pp. 28-29，June
2001.
[10] T. Minotani, Y. Royter, H. Ishii, A. Hirata, K. Machida, A. Sasaki,
and T. Nagatsuma, “Three-dimensional millimeter-wave photonic integrated
circuits on Si,”2001 IEEE MTT-S International Microwave Symposium, vol.
1, pp. 57-60, Phoenix , USA, May 2001.
[9] A. Hirata, Y. Royter, T. Minotani, H. Ishii, T. Furuta, and T. Nagatsuma,
“Monolithically Integrated Photonic Emitters Operating at 120 GHz,”Third
Topical Symposium on Millimeter Waves 2001, pp. 91-94, March 2001.
[8] T. Nagatsuma, A. Hirata, T. Furuta, and T. Ishibashi, “Generation and
Transmission of >100-GHz Millimeter-Waves Using Photonic Techniques,”
Korea-Japan Joint Workshop on Microwave Photonics，pp. 161-164，Seoul, Korea,
March 2001.
[7] A. Hirata, N. Sahri, H. Ishii, K. Machida, S. Yagi, and T. Nagatsuma,
“Design and characterization of millimeter-wave antenna for integrated
photonic transmitter,”2000 Asia-Pacific Microwave Conference, pp. 70-73,
Yokohama Japan, December 2000.
[6] Y. Royter, T. Minotani, H. Ishii, A. Hirata, S. Yagi, K. Machida, T.
Furuta, T. Ishibashi, A. Sasaki, and T. Nagatsuma, “Ultrahigh-speed 1.55-mum
photodiodes on Si with low-loss millimeter-wave waveguides,” 2000 IEEE
LEOS Annual Meeting Conference, Rio Grande, Puerto Rico, vol. 1, pp. 283-284,
Nov. 2000.
[5] T. Nagatsuma, A. Hirata, Y. Royter, M. Shinagawa, T. Furuta, T. Ishibashi,
and H. Ito, “A 120-GHz integrated photonic transmitter, ”International
Topical Meeting on Microwave Photonics MWP 2000, pp. 225-228, September
2000.
[4] A. Hirata, K. Machida, H. Kyuragi, and M. Maeda, “A micromechanical
switch as the logic elements for circuits in multi chip module on Si (MCM-Si),”
Twelfth IEEE International Conference on Micro Electro Mechanical Systems,
pp. 582-587, January 1999.
[3] A. Hirata, K. Machida, N. Awaya, H. Kyuragi, and M. Maeda, “WSiN diffusion
barrier formed by ECR plasma nitridation for copper damascene interconnection,”
1998 International Conference on Solid State Devices and Materials, Hamamatsu
Japan, pp. 260-261, September 1998.
[2] M. Yaita, A. Hirata, K. Machida, H. Ishii, K. Saito, N. Kawamura, and
N. Awaya,“Ruthenium encapsulation of copper interconnections by selective
electroless plating,”Advanced Metallization Conference in 1998, Tokyo Japan,
pp. 767-772, October 1998.
[1] A. Hirata, K. Machida, S. Maeyama, Y. Watanabe, and H. Kyuragi, “Improved
diffusion barrier capability of thin WSiN film by RF bias application during
ECR plasma nitridation,” 1997 International Conference on Solid State Devices
and Materials, pp. 400-401, Hiroshima, Japan, 16-19 September 1997.
- 競争的資金
- [10]2022/08～2026/03 電波資源拡大のための研究開発 「テラヘルツ波による超大容量無線LAN伝送技術の研究開発 （技術課題ア MIMO対応多素子アンテナモジュールに関する研究開発）」、分担者
[9] 2021/10～2024/03 情報通信研究機構 委託研究 「欧州との連携による300GHzテラヘルツネットワークの研究開発」 分担者
[8] 2021/07～2025/03 情報通信研究機構 委託研究 「Beyond 5Gに向けたテラヘルツ帯を活用した端末拡張型無線通信システム実現のための研究開発」 分担者
[7] 2021/04～2024/03 科研費 基盤研究(B) 「異種誘電体層の電磁結合によるテラヘルツ波透過性制御とシートＬＡＮ通信への応用」、代表者
[6] 2018/07～2022/06 情報通信研究機構 委託研究 「大容量アプリケーション向けテラヘルツエンドトゥーエンド無線システム 競争的資金等の外部資金による研究」 分担者
[5] 2017/04～ 科研費 基盤研究(B) 「機能性誘電体層集積導波管スロットアレーアンテナとその近接テラヘルツ無線応用の研究」、代表者.
[4] 2015～2019年 電波資源拡大のための研究開発 「300GHz 帯無線信号の広帯域・高感度測定技術の研究開発 （技術課題ア 送信系計測技術の開発）」、分担者
[3] 2011～2015年 戦略的情報通信研究開発推進事業 「高利得高効率広帯域平面アンテナを使用した100GHz超帯無線通信技術の研究開発」、分担者
[2] 2010年 周波数ひっ迫対策のための技術試験事務 「120GHz帯を用いた10Gbps級無線システムの周波数共用技術に関する検討」、分担者
[1] 2006～2010年 電波資源拡大のための研究開発 「ミリ波帯高精細映像伝送技術の研究開発」、分担者