Committee |
Date Time |
Place |
Paper Title / Authors |
Abstract |
Paper # |
MW |
2019-11-14 16:00 |
Okinawa |
Minami Daido Villa. Tamokuteki Koryu Center |
High Efficiency Doherty Amplifier Using T-Shaped Stabs with Spurius Suppression and Impedance Conversion Function Yuki Takagi, Naoki Hasegawa, Yoshichika Ota (SB), Ryo Ishikawa, Kazuhiko Honjo (UEC) MW2019-107 |
In recent years, various types of wireless stations such as a base station used on quasi-millimeter wave band have been ... [more] |
MW2019-107 pp.41-46 |
MW |
2019-11-15 09:30 |
Okinawa |
Minami Daido Villa. Tamokuteki Koryu Center |
Suppression of interference wave by resistor installation for OAM Communication using Loop Arrays Antenna Hisanosuke Miyake, Akira Saitou, Hiroshi Suzuki, Ryo Ishikawa, Kazuhiko Honjo (UEC) MW2019-111 |
As a novel multiplexing method for wireless communications, OAM (Orbital Angular Momentum) is attracting attention due t... [more] |
MW2019-111 pp.65-70 |
OFT |
2019-05-16 16:00 |
Osaka |
I-site NANBA |
[Poster Presentation]
Twist effect on strain sensitivity of plastic fiber Bragg gratings Tianyi Ma, Ryo Ishikawa, Heeyoung Lee (Tokyo Tech), Antreas Theodosiou, Kyriacos Kalli (CUT), Yosuke Mizuno, Kentaro Nakamura (Tokyo Tech) OFT2019-11 |
[more] |
OFT2019-11 pp.45-50 |
RCS, SR, SRW (Joint) |
2019-03-07 09:50 |
Kanagawa |
YRP |
Vector Potential Analysis on OAM Waves Generated by Circular-Array and Loop Antennas Hiroshi Suzuki, Akira Saitou, Kazuhiko Honjo, Ryo Ishikawa (The Univ. of Electro-Commun.) RCS2018-313 |
Digital radio signal transmission systems utilizing the mode orthogonality generated by the orbital angular momentum (OA... [more] |
RCS2018-313 pp.163-168 |
RCS, SR, SRW (Joint) |
2019-03-08 11:20 |
Kanagawa |
YRP |
Multi-Band RF Hardware Techniques for 5G Mobile Communication Systems Yasushi Yamao, Kazuhiko Honjo, Ryo Ishikawa, Yoichiro Takayama, Akira Saito (UEC) RCS2018-325 |
R & D of 5G mobile communication systems are intensively conducted as joint projects by industries, academia and the gov... [more] |
RCS2018-325 pp.219-224 |
MW |
2018-11-15 10:25 |
Nagasaki |
Fukue Cultural Hall |
Miniaturization of Harmonic Impedance Transformer and its Application to Class-F Amplifiers Kento Saiki, Shinichi Tanaka (Shibaura Inst. of Tech.), Ryo Ishikawa, Kazuhiko Honjo (Univ. of Electro-Communications) MW2018-93 |
A new method of miniaturizing the quarter-wavelength ($lambda$/4) harmonic impedance (Z) transformer in a class-F amplif... [more] |
MW2018-93 pp.7-12 |
MW |
2018-11-15 15:20 |
Nagasaki |
Fukue Cultural Hall |
Evaluation for OAM-MIMO Communication Using Loop Antenna Array Hiroto Otsuka, Ryohei Yamagishi, Akira Saitou, Hiroshi Suzuki, Ryo Ishikawa, Kazuhiko Honjo (UEC) MW2018-101 |
Orbital angular momentum (OAM) is attracting attention in terms of a novel multiplexing method. Multiplexing in OAM comm... [more] |
MW2018-101 pp.49-52 |
MW |
2018-11-15 15:45 |
Nagasaki |
Fukue Cultural Hall |
Advanced Mode Unity Using Loop Array Proximate to Reflector for OAM Communication Ryohei Yamagishi, Hiroto Otsuka, Akira Saitou, Hiroshi Suzuki, Ryo Ishikawa, Kazuhiko Honjo (UEC) MW2018-102 |
Advanced 4-channel multiplexing performance for short- and long-range orbital-angular-momentum (OAM) is demonstrated usi... [more] |
MW2018-102 pp.53-57 |
MW |
2018-11-16 13:15 |
Nagasaki |
Fukue Cultural Hall |
[Special Talk]
Report on 2018 IEEE MTT-S International Microwave Symposium Takashi Shimizu (Utsunomiya Univ.), Ryo Ishikawa (UEC), Tetsuya Ueda (Kyoto Inst. of Tech.), Masataka Ohira (Saitama Univ.), Hiroshi Okazaki (NTT DOCOMO), Yuji Komatsuzaki (Mitsubishi Electric Corp.), Tamura Masaya (TUT) MW2018-110 |
[more] |
MW2018-110 pp.95-102 |
EST, MW, EMCJ, IEE-EMC [detail] |
2018-10-18 16:35 |
Aomori |
Hachinohe Chamber of Commerce and Industry(Hachinohe city, Aomori) |
GaN HEMT Darlington Power Amplifier with Individual Bias Adjustment for High-Efficiency and Low-Distortion Characteristics Atsushi Kitamura, Yoichiro Takayama, Ryo Ishikawa, Kazuhiko Honjo (UEC) EMCJ2018-45 MW2018-81 EST2018-67 |
Multi-transistor configurations are widely applied for improving the performance of transistor amplifiers. In the multi-... [more] |
EMCJ2018-45 MW2018-81 EST2018-67 pp.71-75 |
OFT |
2018-10-11 16:00 |
Miyagi |
Touhoku Univ. |
[Poster Presentation]
Simple and accurate Bragg wavelength demodulation method in multimode plastic FBGs Tianyi Ma, Ryo Ishikawa, Heeyoung Lee (Tokyo Tech), Antreas Theodosiou, Kyriacos Kalli (CUT), Yosuke Mizuno, Kentaro Nakamura (Tokyo Tech) OFT2018-42 |
For strain sensing applications, we develop a simple and accurate demodulation method for fiber Bragg gratings (FBGs) in... [more] |
OFT2018-42 pp.133-136 |
OFT |
2018-10-11 16:00 |
Miyagi |
Touhoku Univ. |
[Poster Presentation]
Temperature dependence of FBG inscribed in perfluorinated plastic optical fiber Ryo Ishikawa, Heeyoung Lee (Tokyo Tech), Antreas Theodosiou, Kyriacos Kalli (CUT), Yosuke Mizuno, Kentaro Nakamura (Tokyo Tech) OFT2018-43 |
[more] |
OFT2018-43 pp.137-140 |
OFT |
2018-10-12 10:00 |
Miyagi |
Touhoku Univ. |
[Invited Talk]
Report on APOS2018 Yosuke Mizuno, Heeyoung Lee, Ryo Ishikawa, Sonoko Hagiwara (Tokyo Tech) OFT2018-50 |
The 7th Asia-Pacific Optical Sensors Conference (APOS2018) was held from May 28 to 31, 2018, in Matsue, Shimane, Japan. ... [more] |
OFT2018-50 pp.167-170 |
SDM, ICD, ITE-IST [detail] |
2018-08-07 15:25 |
Hokkaido |
Hokkaido Univ., Graduate School of IST M Bldg., M151 |
A 65nm SOTB Based-On Code-Modulated Synchronized-OOK Transmitter for Normally-Off Wireless Sensor Networks Van-Trung Nguyen, Ryo Ishikawa, Koichiro Ishibashi (The UEC) SDM2018-33 ICD2018-20 |
In this paper, Code-Modulated Synchronized-OOK (CMS-OOK) modulation scheme is proposed. Based on 65nm SOTB (Silicon-On T... [more] |
SDM2018-33 ICD2018-20 pp.41-46 |
OPE, OCS, OFT (Joint) [detail] |
2018-02-15 16:50 |
Okinawa |
Okinawa Prefectural Museum |
Optical wavelength dependence of strain sensitivity of FBG inscribed in perfluorinated plastic optical fibers Ryo Ishikawa, Heeyoung Lee (Tokyo Tech), Amedee Lacraz, Antreas Theodosiou, Kyriacos Kalli (CUT), Yosuke Mizuno, Kentaro Nakamura (Tokyo Tech) OFT2017-72 OPE2017-176 |
(Advance abstract in Japanese is available) [more] |
OFT2017-72 OPE2017-176 pp.17-22(OFT), pp.35-40(OPE) |
ED, MW |
2018-01-26 11:00 |
Tokyo |
Kikai-Shinko-Kaikan Bldg. |
[Special Talk]
Briefing Report on European Microwave Week 2017 Ryo Ishikawa (UEC), Shuhei Amakawa (Hiroshima Univ.), Chen Chun-Pin (Kanagawa Univ.), Tamio Kawaguchi (Toshiba), Hiroshi Okazaki (NTT DOCOMO) ED2017-100 MW2017-169 |
The Microwave Week 2017, comprising the European Microwave Conference (EuMC), European Rader Conference(EuRAD), and Euro... [more] |
ED2017-100 MW2017-169 pp.35-40 |
MW |
2017-12-19 10:30 |
Tokyo |
|
4.5-/4.9-GHz-Band Tunable GaN HEMT High Efficiency Power Amplifier with PIN Diode Switches. Kazuki Mashimo, Ryo Ishikawa, Kazuhiko Honjou (Univ. of Electro-Communications) MW2017-142 |
For the next generation wireless communication systems, 4.5-/4.9-GHz band tunable GaN HEMT high efficiency power amplifi... [more] |
MW2017-142 pp.1-6 |
MW |
2017-12-19 10:55 |
Tokyo |
|
Ultra low power GaAs pHEMT rectifier for energy harvesting system Kazumasa Oyoshi, Ryo Ishikawa, Kazuhiko Honjo (UEC) MW2017-143 |
An ultra-low-power GaAs pHEMT rectifier has been developed at 900 MHz band for IoT sensor network systems based on an en... [more] |
MW2017-143 pp.7-11 |
MW |
2017-12-20 11:10 |
Tokyo |
|
MHz-Band Multi-Harmonic Active Source-Pull System for High-Efficiency Transistor Rectifier Design Minato Machida, Ryo Ishikawa, Kazuhiko Honjo (UEC) MW2017-157 |
To estimate an optimum harmonic impedance for an intrinsic part of transistor, a MHz-band harmonics active load-pull sys... [more] |
MW2017-157 pp.89-93 |
MW |
2017-11-09 13:50 |
Okinawa |
Miyakojima Marin Terminal Bldg. |
Effects of drain-gate feedback capacitance on output power and power efficiency of microwave power amplifier Yoichiro Takayama, Kazuhiko Honjo, Ryo Ishikawa (UEC) MW2017-120 |
(To be available after the conference date) [more] |
MW2017-120 pp.45-49 |