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All Technical Committee Conferences (Searched in: All Years)
| Committee | Date Time | Place | Paper Title / Authors | Abstract | Paper # | |
| MW | 2019-11-14 14:05 |
Okinawa | Minami Daido Villa. Tamokuteki Koryu Center | Gate Switching-Mode Low Power Transistor Rectifier using Enhancement-Mode GaAs HEMT Tsuyoshi Yoshida, Ryo Ishikawa, Kazuhiko Honjo (UEC)  MW2019-103 |
In an RF energy-harvesting utilizing environmental electromagnetic waves, a high-efficiency rectifier is required to con... [more] | MW2019-103 pp.19-24 |
| MW | 2019-11-14 15:35 |
Okinawa | Minami Daido Villa. Tamokuteki Koryu Center | High-Efficiency GaN HEMT Doherty Power Amplifier Based on Two-Power-Level Impedance Optimization including Harmonic Treatment Takuya Seshimo, Yoichiro Takayama, Ryo Ishikawa, Kazuhiko Honjo (UEC) MW2019-106 |
Further high efficiency and high functionality of power amplifier are required for the next generation wireless communic... [more] | MW2019-106 pp.35-39 |
| 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 |
| MW, ICD | 2019-03-14 15:15 |
Okinawa | A 10-MHz-Band Gate Zero-Bias Amplification/Rectification Module using Zero-Threshold Si MOS Transistor Takaharu Kume, Ishikawa Ryo, Kazuhiko Honjo (UEC) MW2018-165 ICD2018-109 |
A high-efficiency amplification/rectification module has been developed at 10-MHz band for bidirectional wireless power ... [more] | MW2018-165 ICD2018-109 pp.49-54 |
|
| 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 |
| 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 |
| 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 |
| MW | 2017-11-09 14:05 |
Okinawa | Miyakojima Marin Terminal Bldg. | Wide-Band High-Efficiency GaN HEMT Amplifier Based on Multi-Harmonic Treatments at Low SHF Band Yuki Takagi, Ryo Ishikawa, Kazuhiko Honjo (UEC) MW2017-121 |
High-efficiency power amplifiers operating at higher-frequency bands are required for next generation wireless communica... [more] | MW2017-121 pp.51-56 |
| MW | 2017-11-09 14:35 |
Okinawa | Miyakojima Marin Terminal Bldg. | Efficiency Improvement of Concurrent Dual-Band GaN HEMT Power Amplifier with Two amplification circuits and Duplexers Haruka Nishizawa, Yoichiro Takayama, Ryo Ishikawa, Kazuhiko Honjo (UEC) MW2017-123 |
[more] | MW2017-123 pp.61-66 |
| MW | 2017-11-10 13:30 |
Okinawa | Miyakojima Marin Terminal Bldg. | Analysis on Interference Wave Suppression Effect with Port Azimuths Control of Loop Antenna Array for OAM Communication Hiroto Otsuka, Ryohei Yamagishi, Akira Saitou, Ryo Ishikawa, Kazuhiko Honjo (UEC) MW2017-137 |
Orbital-Angular-Momentum(OAM) is attracting attention in terms of a novel multiplexing method. Multiplexing in OAM commu... [more] | MW2017-137 pp.139-144 |
| MW | 2017-11-10 13:45 |
Okinawa | Miyakojima Marin Terminal Bldg. | Improvement of Mode Uniqueness for OAM Communication Using a Loop Array by Reflector Plane Ryohei Yamagishi, Hiroto Otuka, Akira Saitou, Ryo Ishikawa, Kazuhiko Honjo (UEC) MW2017-138 |
Mode uniqueness in an orbital-angular-momentum (OAM) communication method is improved to obtain excellent performance at... [more] | MW2017-138 pp.145-149 |
| MW (2nd) |
2017-06-14 - 2017-06-16 |
Overseas | KMUTT, Bangkok, Thailand | Study on Compact Bidirectional DC-DC Converter Consisting of 100-MHz High-Efficiency Amplifier and Rectifier Shogo Mizoguchi, Kazuhiko Honjo, Ryo Ishikawa (UEC) |
A concept of a compact bidirectional DC-DC converter has been proposed. The DC-DC converter consists of high-efficiency ... [more] | |
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