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All Technical Committee Conferences (Searched in: All Years)
| Committee | Date Time | Place | Paper Title / Authors | Abstract | Paper # | |
| AP, WPT (Joint) |
2024-01-17 14:50 |
Niigata | Niigata Univ. (Primary: On-site, Secondary: Online) |
2.45 GHz High-Efficiency Power Amplifier for Integration and Cooperation of Telecommunication and Wireless Power Transfer Yuki Takagi, Yuta Nakamoto, Takashi Hirakawa, Yoshichika Ohta, Naoki Hasegawa (SB) |
[more] | |
| MW | 2023-11-16 11:15 |
Okinawa | Nago City Industrial Support Center (Okinawa) (Primary: On-site, Secondary: Online) |
Dual-Band Asymmetric Doherty Amplifier with T-shaped Stubs Yuki Takagi, Yoshichika Ohta (SB)  MW2023-127 |
In this paper, we propose a design method for a dual-band asymmetric Doherty amplifier at 1.8 GHz(Band3)/2.1 GHz (Band1)... [more] | MW2023-127 pp.7-12 |
| WPT | 2023-06-30 13:40 |
Tokyo | (Primary: On-site, Secondary: Online) |
[Invited Talk]
Study on Integration and Cooperation of Telecommunication and Wireless Power Transfer Yuta Nakamoto, Naoki Hasegawa, Takashi Hirakawa, Yoshichika Ohta (SoftBank Corp.) WPT2023-10 |
The IoT business has been developing rapidly in recent years, and IoT devices are expected to become more widespread in ... [more] | WPT2023-10 p.2 |
| RCS, IN, NV (Joint) |
2023-05-25 10:50 |
Kanagawa | Keio University (Hiyoshi Campus), and online (Primary: On-site, Secondary: Online) |
Performance Evaluation of Digital Self-Interference Cancellers for In-Band Full-Duplex Systems with High-Power Amplifiers Motoshi Tawada, Yuki Takagi, Yoshichika Ohta (SoftBank) RCS2023-16 |
In-band full-duplex communication (IBFD), which performs transmission and reception in the same frequency band at the sa... [more] | RCS2023-16 pp.13-17 |
| AP | 2023-02-15 13:50 |
Miyagi | Tohoku University, Aobayama Campus (Primary: On-site, Secondary: Online) |
[Invited Lecture]
Design and Analysis of LoS-MIMO System with Uniform Cross Array Composed of Dual-polarized Antennas Motoshi Tawada, Yoshichika Ohta, Atsushi Nagate (SoftBank) AP2022-204 |
Research and development of communication services using radios and antennas mounted on vehicles, unmanned aerial vehicl... [more] | AP2022-204 pp.40-45 |
| AP | 2023-02-16 15:20 |
Miyagi | Tohoku University, Aobayama Campus (Primary: On-site, Secondary: Online) |
[Tutorial Lecture]
Research and development of HAPS wireless relay system Yoshichika Ohta (Softbank) AP2022-219 |
HAPS (High-Altitude Platform Stations), which provide mobile communication services by installing base station equipment... [more] | AP2022-219 pp.121-126 |
| WPT (2nd) |
2022-12-05 - 2022-12-06 |
Kyoto | Uji Obaku Plaza Kihada Hall, Uji Campus, Kyoto University (Primary: On-site, Secondary: Online) |
Experiment of wireless power transmission using millimeter-wave rectenna with modulated signal input Yuta Nakamoto, Naoki Hasegawa, Takashi Hirakawa, Yoshichika Ohta (SoftBank Corp.), Naoki Sakai, Tsukasa Hirai, Kenji Itoh (KIT) |
This work focuses on the wireless power transfer (WPT) compatible base station for IoT sensors. A technique to add WPT ... [more] |
|
| RCS, AP, UWT (Joint) |
2022-11-16 14:55 |
Fukuoka | Kyushu University, and Online (Primary: On-site, Secondary: Online) |
LoS-MIMO Transmission Experiment Using Dual-polarized Antennas. Motoshi Tawada, Yoshichika Ohta, Atsushi Nagate (SoftBank) AP2022-163 |
Research and development of communication services using radios and antennas mounted on vehicles, UAVs, HAPS, and other ... [more] | AP2022-163 pp.91-96 |
| MW | 2022-11-15 13:50 |
Nagasaki | Fukue-Bunka-Kaikan (Primary: On-site, Secondary: Online) |
Study on Power Consumption and Power Reduction of RF Power Amplifier in 5G Downlink System Yuki Takagi, Yoshichika Ohta (SB) MW2022-113 |
This paper proposes the estimation of power consumption of RF power amplifier in downlink (from base station to UE) comm... [more] | MW2022-113 pp.25-30 |
| EE, WPT (Joint) |
2022-10-06 13:55 |
Osaka | (Primary: On-site, Secondary: Online) |
28 GHz band wireless power transfer experiments with a GaAs rectenna MMIC with an inductive high impedance patch antenna Tsukasa Hirai, Takumi Itoh, Yuya Hirose, Naoki Sakai, Keisuke Noguchi, Kenji Itoh (Kanazawa IT), Naoki Hasegawa, Takashi Hirakawa, Yuta Nakamoto, Yoshichika Ohta (SoftBank) WPT2022-22 |
As one of additional functions in the beyond-5th generation (B5G) mobile communication system, the wireless power transf... [more] | WPT2022-22 pp.7-10 |
| AP, MW (Joint) |
2022-09-15 13:50 |
Ehime | The Museum of Art, EHIME (Primary: On-site, Secondary: Online) |
Prototype Development and Basic Experimental Evaluation of Feeder Link Transceiver in HAPS System Kazuki Matsuura, Yoshichika Ohta (SoftBank) AP2022-79 |
High-Altitude Platform Station (HAPS) is attracting much attention as a new mobile communications platform realizing ult... [more] | AP2022-79 pp.44-49 |
| AP | 2022-08-19 13:25 |
Tochigi | Tochigi Prefecture Industrial Center (Primary: On-site, Secondary: Online) |
A Study on Robust LoS-MIMO Transmission in HAPS Feeder Link Motoshi Tawada, Yoshichika Ohta, Atsushi Nagate (Softbank) AP2022-68 |
In line of sight multiple input multiple output (LoS-MIMO) transmission in a feeder link, which involves communication b... [more] | AP2022-68 pp.23-28 |
| NS, SR, RCS, SeMI, RCC (Joint) |
2022-07-14 11:45 |
Ishikawa | The Kanazawa Theatre + Online (Primary: On-site, Secondary: Online) |
An Experimental Study on Automatic Gain Control in HAPS Repeater System Takuya Hasegawa, Mitsukuni Konishi, Yoshichika Ohta, Atsushi Nagate (SoftBank) SR2022-29 |
High-Altitude Platform Station (HAPS) is a new mobile communication platform which enables to directly provide mobile co... [more] | SR2022-29 pp.41-47 |
| AP | 2022-02-17 10:25 |
Online | Online | [Invited Lecture]
A Study on HAPS Feeder Link System Yoshichika Ohta, Kazuki Matsuura, Bing Han (Softbank) AP2021-160 |
HAPS (High-Altitude Platform Stations), which provide mobile communication services by installing base station equipment... [more] | AP2021-160 pp.11-15 |
| AP, RCS (Joint) |
2021-11-10 13:30 |
Nagasaki | NBC-Bekkan (Nagasaki) (Primary: On-site, Secondary: Online) |
[Invited Lecture]
A Study on Interference Canceller for HAPS Feeder Links with Multi-Gateways under Multiple-Path Environment Takafumi Fujii, Yoshichika ohta (Softbank.corp) AP2021-101 RCS2021-148 |
HAPS (High Altitude Platform Station), which is a stratosphere platform around 20Km altitude, cellular communication ser... [more] | AP2021-101 RCS2021-148 pp.3-9(AP), pp.21-27(RCS) |
| WPT | 2021-03-05 11:35 |
Online | Online | Small-Size Rectenna Drone and Magnetron Transmitter Naoki Hasegawa (SB), Teruo Fujiwara (Sho-Engineering), Yuta Nakamoto, Yoshichika Ohta (SB) WPT2020-46 |
This work discusses the microwave-power transfer (MPT) to a small done for the first step of research program on wirele... [more] |
WPT2020-46 pp.62-66 |
| AP | 2021-02-19 14:25 |
Online | Online | [Invited Lecture]
A study on multi-beam conformal array antenna for UAV platforms (1) Yoshichika Ohta (Softbank) AP2020-128 |
HAPS (High-Altitude Platform Stations), which provide mobile communication services by installing base station equipment... [more] | AP2020-128 pp.68-72 |
| MW, AP (Joint) |
2020-09-25 11:40 |
Online | Online | A Study on Antenna Configuration and Beam Control for Feeder Link in HAPS System Kazuki Matsuura, Yoshichika Ohta (SoftBank) AP2020-65 |
High-Altitude Platform Station (HAPS), which provides communications services from the altitude of 20km by utilizing bal... [more] | AP2020-65 pp.150-155 |
| SAT, RCS (Joint) |
2020-08-20 15:35 |
Online | Online | [Invited Talk]
R&D of HAPS Mobile Broadband Communications towards 6G Atsushi Nagate, Kenji Hoshino, Yoshichika Ohta (SoftBank) SAT2020-18 RCS2020-82 |
[more] | SAT2020-18 RCS2020-82 p.45(SAT), p.21(RCS) |
| AP, SANE, SAT (Joint) |
2020-07-17 13:50 |
Online | Online | Prototype Development and Basic Experimental Evaluation of Service Link Antenna for Footprint Fixation in HAPS System Shoichi Sudo, Kenji Hoshino, Yoshichika Ohta (SB) AP2020-22 |
High-Altitude Platform Station (HAPS) is attracting attention as a new communication platform for disaster countermeasur... [more] | AP2020-22 pp.75-80 |
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