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All Technical Committee Conferences (Searched in: All Years)
| Committee | Date Time | Place | Paper Title / Authors | Abstract | Paper # | |
| MW | 2024-11-14 13:30 |
Okinawa | JA Kume-jima Yuntaku house (Primary: On-site, Secondary: Online) |
A Study on Improvement of Transmission Characteristics by Adjustment of Reflection Angles between Modes in OAM Communication Beam-steering Kanki Kitayama, Akira Saitou, Kazuhiko Honjo, Ryo Ishikawa (UEC)  MW2024-129 |
Recently, multiplexing of electromagnetic waves with different orbital angular momenta (OAM) has attracted attention as ... [more] | MW2024-129 pp.35-39 |
| MW | 2024-11-14 13:55 |
Okinawa | JA Kume-jima Yuntaku house (Primary: On-site, Secondary: Online) |
Improvement of Output Back-Off Efficiency by Doherty-Outphasing Mixed Operation for 4.7-GHz-Band GaN HEMT Power Amplifier with Miniature Combiner Yudai Shiraishi, Kazuhiko Honjo, Ryo Ishikawa (UEC) MW2024-130 |
An outphasing power amplifier is one of high-efficiency load-modulation amplifiers for wide-dynamic-range digitally modu... [more] | MW2024-130 pp.40-45 |
| WPT | 2024-06-13 14:55 |
Hokkaido | Hakodate Citizen Hall (Primary: On-site, Secondary: Online) |
Study on Miniaturization of High-Efficiency and High-Gain Microwave Amplifier for DC-RF Conversion in SSPS Power Transmitter Ryo Ishikawa, Kazuhiko Honjo (UEC) WPT2024-10 |
In the planned Space Solar Power System (SSPS), high-efficiency microwave power amplifiers are expected to be used for h... [more] | WPT2024-10 pp.12-17 |
| MW | 2024-02-29 10:05 |
Okayama | Okayama Prefectural University (Primary: On-site, Secondary: Online) |
A Study on Efficiency Improvement by Adjusting Drain Bias Voltage in a Distributed Amplifier Kento Iwasaki, Kazuhiko Honjo, Ryo Ishikawa (UEC) MW2023-174 |
Increasing the communication capacity and speed is required for recent wireless communication systems. Currently, many ... [more] |
MW2023-174 pp.1-4 |
| MW | 2024-03-01 10:15 |
Okayama | Okayama Prefectural University (Primary: On-site, Secondary: Online) |
28-GHz-Band GaN HEMT Outphasing Amplifier MMIC Designed by Considering Insertion Loss at Dual-Power-Level Optimization Taiki Kobayashi, Kazuhiko Honjo, Ryo Ishikawa (UEC) MW2023-189 |
The development of the fifth generation mobile communications (5G) will use higher frequencies such as millimeter wave b... [more] | MW2023-189 pp.74-77 |
| MW | 2023-12-21 16:25 |
Shizuoka | Shizuoka University (Hamamatsu Campus) (Primary: On-site, Secondary: Online) |
A 28-GHz Loop antenna Arrays with Switching Diodes for OAM Beamforming Tsuyoshi Yoshida, Akira Saitou, Kazuhiko Honjo, Ryo Ishikawa (UEC) MW2023-152 |
[more] | MW2023-152 pp.20-23 |
| MW | 2023-11-16 16:25 |
Okinawa | Nago City Industrial Support Center (Okinawa) (Primary: On-site, Secondary: Online) |
Extension of Communication Distance via Dielectric-Lens Repeater for OAM Multiplexing Communications Kaito Uchida, Akira Saitou, Kazuhiko Honjo, Ryo Ishikawa (UEC) MW2023-135 |
Recently, a multiplex communication utilizing orbital angular momentum (OAM) of electromagnetic waves has been attractin... [more] | MW2023-135 pp.49-53 |
| MW | 2023-11-16 16:50 |
Okinawa | Nago City Industrial Support Center (Okinawa) (Primary: On-site, Secondary: Online) |
One-to-many OAM Communication by Beam-steering Using Loop Antenna Array Displaced from Focus of Paraboloid Kanki Kitayama, Akira Saitou, Kazuhiko Honjo, Ryo Ishikawa (The Univ. of Electro-Communications) MW2023-136 |
The beam-steering technique for an orbital angular momentum (OAM) wave is proposed and demonstrated for one-to-many OAM ... [more] | MW2023-136 pp.54-58 |
| MW | 2023-11-17 09:55 |
Okinawa | Nago City Industrial Support Center (Okinawa) (Primary: On-site, Secondary: Online) |
A Study on Wide-Dynamic-Range High-Efficiency GaN HEMT Rectifier System by Using Adaptive Gate Bias Controlling Rectifier Taki Nagata, Jun Yamazaki, Kazuhiko Honjo, Ryo Ishikawa (UEC) MW2023-139 |
[more] | MW2023-139 pp.71-75 |
| MW | 2023-03-02 13:25 |
Tottori | Tottori Univ. (Primary: On-site, Secondary: Online) |
Characteristic Improvement at Back-Off Region by Three-Power-Level Optimization for 3.7-GHz GaN HEMT Doherty Amplifier Masataka Yamamoto, Kazuhiko Honjo, Yoichiro Yakayama, Ryo Ishikawa (UEC) MW2022-163 |
Increasing the communication capacity and speed is required for recent wireless communication systems. Digital modulated... [more] | MW2022-163 pp.37-41 |
| MW, ED | 2023-01-27 16:15 |
Tokyo | Kikai-Shinko-Kaikan Bldg. (Primary: On-site, Secondary: Online) |
[Invited Talk]
Microwave Semiconductor Devices and Circuits for Industrial Innovation Kazuhiko Honjo (UEC) ED2022-97 MW2022-156 |
For the past 100 years, the electron saturation velocity, which is an important parameter of semiconductors, has been ab... [more] | ED2022-97 MW2022-156 pp.51-54 |
| MW | 2022-12-16 09:00 |
Mie | Jingu-Kaikan(Ise) (Primary: On-site, Secondary: Online) |
Optimization of Concave Reflector and Feed-Point Azimuths on Loop-Antenna-Array OAM Multiplex Long-Range Communication System Katsuya Ishihara, Akira Saitou, Kazuhiko Honjo, Ryo Ishikawa (UEC) MW2022-139 |
Utilizing the orbital angular momentum (OAM) of electromagnetic waves has recently been attracting attention for providi... [more] | MW2022-139 pp.38-42 |
| MW | 2022-11-15 13:00 |
Nagasaki | Fukue-Bunka-Kaikan (Primary: On-site, Secondary: Online) |
Improvement of Output Back-off Performance on Outphasing Operation by Using 50-Ω Design Power Amplifiers at Quasi-Millimeter-Wave Band Nao Ashizawa, Kazuhiko Honjo, Ryo Ishikawa (UEC) MW2022-111 |
In order to handle digital modulation signals used in beyond 5G systems, RF power amplifiers with a wide-dynamic-range c... [more] | MW2022-111 pp.13-18 |
| MW | 2022-11-16 09:55 |
Nagasaki | Fukue-Bunka-Kaikan (Primary: On-site, Secondary: Online) |
DC Voltage Synthesis of Sub-mW-Level 2.45-GHz-Band High-Efficiency Rectifiers with Zero-Threshold GaAs HEMTs for Wireless Power Transfer Tsuyoshi Yoshida, Kazuhiko Honjo, Ryo Ishikawa (UEC) MW2022-122 |
[more] | MW2022-122 pp.73-76 |
| MW | 2022-11-16 10:20 |
Nagasaki | Fukue-Bunka-Kaikan (Primary: On-site, Secondary: Online) |
DC-Feedback-Mode Zero-Threshold GaAs HEMT Rectifier/Voltage-Doubler Diode Rectifier for Applying Negative Gate-Bias to Microwave Power Amplifier Taki Nagata, Ryo Ishikawa, Kazuhiko Honjo (UEC) MW2022-123 |
In recent years, there has been much research on RF energy harvesting, which converts small electromagnetic waves in the... [more] | MW2022-123 pp.77-80 |
| MW | 2022-06-09 14:25 |
Nagano | Naganoken Nokyo Building (Primary: On-site, Secondary: Online) |
A 4.5 GHz-Band GaN HEMT Outphasing Amplifier MMIC with Compact Output Combiner Ryo Ishikawa, Yoichiro Takayama, Kazuhiko Honjo (UEC) MW2022-25 |
[more] | MW2022-25 pp.13-18 |
| ED, MW | 2022-01-27 15:30 |
Online | Online | [Invited Lecture]
A 28GHz-Band GaN HEMT Doherty Amplifier MMIC Based on Dual-Power-Level Design Technique Ryo Ishikawa, Takuya Seshimo, Yoichiro Takayama, Kazuhiko Honjo (UEC) ED2021-67 MW2021-109 |
In the 5G wireless communication system, a quasi-millimeter wave band such as the 28 GHz band is also used. Doherty powe... [more] | ED2021-67 MW2021-109 pp.28-31 |
| MW | 2020-12-10 13:15 |
Kanagawa | (Primary: On-site, Secondary: Online) |
A 3.9-GHz-Band GaN HEMT Outphasing Power Amplifier with Reactance-Compensation Compact Combiner Ryoichi Ogasawara, Yoichiro Takayama, Ryo Ishikawa, Kazuhiko Honjo (UEC) MW2020-71 |
Recently, the need for large-capacity communications has increased in wireless communication systems due to the increase... [more] | MW2020-71 pp.1-6 |
| MW | 2020-12-10 13:40 |
Kanagawa | (Primary: On-site, Secondary: Online) |
High-Efficiency Wide-Dynamic-Power-Range Rectifier with Adaptive Self-Gate-Biasing Jun Yamazaki, Ryo Ishikawa, Kazuhiko Honjo (UEC) MW2020-72 |
In RF energy harvesting and wireless power transfer, it is required to develop rectifiers having wide dynamic range char... [more] | MW2020-72 pp.7-11 |
| MW | 2020-12-10 14:05 |
Kanagawa | (Primary: On-site, Secondary: Online) |
Circular Loop Antenna Array for OAM Multiplex Communication Shared for Wireless Power Transfer Wataru Wada, Ryo Ishikawa, Akira Saitou, Hisanosuke Miyake, Haruki Kikuchi, Hiroshi Suzuki, Kazuhiko Honjo (UEC) MW2020-73 |
Recently, due to the increase in the amount of information traffic, there has been a demand for higher speed and larger ... [more] | MW2020-73 pp.12-17 |
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