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Committee Date Time Place Paper Title / Authors Abstract Paper #
MW, EMCJ, EST, IEE-EMC [detail] 2023-10-20
10:00
Yamagata Yamagata University
(Primary: On-site, Secondary: Online)
Study on Efficiency Improvement of Dual-Input GaN Amplifier as Outphasing Amplifier
Shinro Yatsuda, Rikito Matsuo, Takana Kaho (Shonan Inst.Tech.), Shuichi Sakata, Yuji Komatsuzaki, Koji Yamanaka (Mitsubishi Electric) EMCJ2023-59 MW2023-113 EST2023-86
We are developing a base station amplifier that covers a wide frequency range of 4G/5G by switching the Doherty and outp... [more] EMCJ2023-59 MW2023-113 EST2023-86
pp.125-130
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
AP 2022-10-19
09:30
Gifu GIFU CITY CULTURE CENTER
(Primary: On-site, Secondary: Online)
[Poster Presentation] Fast and High-accuracy Channel Estimation Method for Reconfigurable Intelligent Surfaces Combining Load Modulation and Compressed Sensing Techniques
Shun Sasaki, Takumi Kato, Kentaro Murata, Naoki Honma (Iwate Univ.) AP2022-105
In this study, we propose a channel estimation method for reconfigurable intelligent surfaces (RIS) combining the load m... [more] AP2022-105
pp.47-52
AP, MW
(Joint)
2022-09-15
11:35
Ehime The Museum of Art, EHIME
(Primary: On-site, Secondary: Online)
Examination of Wideband Measurement of Dual-input GaN Amplifier Using Vector Transceiver
Takato Suzuki, Yahiro Nanba, Takana Kaho (Shonan Inst. Tech.), Shuichi Sakata, Yuji Komatsuzaki, Koji Yamanaka (MELCO) MW2022-75
We are researching a wideband dual-input one-output GaN amplifier for base stations that covers 4G / 5G frequencies. It ... [more] MW2022-75
pp.36-41
ED, MW 2022-01-27
16:05
Online Online [Invited Talk] Wideband Load Modulated GaN Power Amplifiers for Wireless Base-Stations
Shuichi Sakata, Yuji Komatsuzaki, Kento Saiki, Koji Yamanaka, Masaomi Tsuru (Mitsubishi Electric) ED2021-68 MW2021-110
Recently, 5G commercial services which have features of high speed, large capacity and multi-connectivity have rolled ou... [more] ED2021-68 MW2021-110
pp.32-37
EMCJ, EMD, WPT
(Joint)
2021-07-02
14:20
Online Online Cavity Resonant Wireless Power Transfer Based on Online S-parameter Estimation
Keito Takiya, Shinnosuke Kondo, Kentarou Murata, Naoki Honma (Iwate Univ.) WPT2021-5
To improve the transmission efficiency at blind spots caused by standing waves in a cavity, a novel cavity resonant wire... [more] WPT2021-5
pp.1-6
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
EMCJ, MW, EST, IEE-EMC [detail] 2019-10-24
10:55
Miyagi Tohoku Gakuin University(Conf. Room 2, Eng. Bldg. 1) Efficiency Enhancement of GaN Doherty Power Amplifier at Large Power Back-Off with Virtual Short Stub Technique
Satoru Honda, Shuichi Sakata, Yuji Komatsuzaki, Shintaro Shinjo (Mitsubishi Electric) EMCJ2019-40 MW2019-69 EST2019-48
We propose a new efficiency enhancement technique of Doherty power amplifiers (DPAs) using virtual short stub. In this t... [more] EMCJ2019-40 MW2019-69 EST2019-48
pp.21-25
WPT, EMCJ
(Joint)
2017-11-21
15:40
Tokyo Kikai-Shinko-Kaikan Bldg. Wireless Power and Data Transfer System
Takatoshi Shirosugi, Katsuei Ichikawa, Hitoshi Akiyama (Hitachi) WPT2017-51
In order to reduce the sensor wires, we have developed elemental technology and system about the Wireless Power and Data... [more] WPT2017-51
pp.39-43
AP, RCS, WPT, SAT
(Joint)
2015-11-06
10:55
Okinawa Okinawa Prefectural Museum & Art Museum Non-Contact Channel Estimation of Propagation Channel Using Load Modulation for Evaluating Miniaturized MIMO Antenna
Kazuya Takahashi, Naoki Honma (Iwate Univ.), Kentaro Murata (NDA), Yoshitaka Tsunekawa (Iwate Univ.) AP2015-145
In this paper, a non-contact channel estimation method suitable for a miniaturized MIMO (Multiple-Input Multiple-Output)... [more] AP2015-145
pp.201-206
AP 2015-06-11
13:25
Tokyo Kikai-Shinko-Kaikan Bldg. Accuracy Evaluation of Gesture Recognition Using RFID with Load Modulation Technique
Shun Sasaki, Takuma Ito, Naoki Honma, Yoshitaka Tsunekawa (Iwate Univ.) AP2015-33
The authors have proposed a direction estimation method of passive RFID(Radio Frequency IDentification), where a load mo... [more] AP2015-33
pp.7-12
AP 2015-01-22
13:35
Ehime Ehime University Experimental Performance Evaluation of Interference Reduction Between Multiple Wireless Systems Exploiting Load Modulation
Takuma Ito, Naoki Honma (Iwate Univ.), Kentaro Nishimori (Niigata Univ.), Yoshitaka Tsunekawa (Iwate Univ.) AP2014-168
When secondary system uses the same frequency band in the area of primary system such as television broadcast system whi... [more] AP2014-168
pp.39-44
AP 2014-12-11
12:25
Tokyo Kikai-Shinko-Kaikan Bldg. Measurement of Complex Radiation Pattern of MIMO Antenna Using Backscattering Waves
Masatoshi Saitoh (Tohoku Univ.), Naoki Honma (Iwate Univ.), Qiang Chen (Tohoku Univ.) AP2014-152
The coaxial cables seriously affect the measurement accuracy of the complex radiation patterns of the MIMO antenna due t... [more] AP2014-152
pp.7-12
AP 2014-06-12
15:20
Tokyo Kikai-Shinko-Kaikan Bldg. Transmit Beamforming Technique for Short-range MIMO Based on Channel Estimation Using Load Modulation
Kentaro Murata (NDA), Naoki Honma (Iwate Univ.), Kentaro Nishimori (Niigata Univ.), Hisashi Morishita (NDA) AP2014-46
In this report, a transmit beamforming technique based on channel estimation using load modulation for short-range MIMO ... [more] AP2014-46
pp.35-40
AP 2014-05-30
13:35
Okinawa Okinawa Industory Support Center Method to Reduce Complexity of MLD in Massive and Passive MIMO using Beam-forming at Receiver
Ryota Takahashi, Keisuke Terasaki (Iwate Univ.), Kentaro Murata (NDA), Naoki Honma, Yoshitaka Tsunekawa (Iwate Univ.) AP2014-35
In this report , we show the method to reduce complexity of demodulation in passive Multiple-Input Multiple-Output (MIMO... [more] AP2014-35
pp.85-90
AP
(2nd)
2014-04-25
11:25
Miyagi Aoba Memorial Hall (Sendai) Estimating Complex Radiation Patterns of MIMO Antenna Using Load Modulation
Masatoshi Saitoh (Tohoku Univ.), Naoki Honma (Iwate Univ.), Qiang Chen (Tohoku Univ.)
Complex radiation patterns is one of the figure of merit for MIMO~{(Multiple-Input Multiple-Output)} antenna. In general... [more]
AP, PEM
(Joint)
2013-10-04
14:35
Ishikawa Kanazawa Univ. Satellite-Plaza Experimental Evaluation of Passive MIMO Transmission Using Load Modulation
Keisuke Terasaki, Naoki Honma (Iwate Univ.) AP2013-99
In this report, we present experimental results of passive Multiple-Input Multiple-Output (MIMO) transmission which uses... [more] AP2013-99
pp.65-68
AP 2013-08-30
15:50
Kanagawa Yokosuka Interference Control Method Between Primary and Secondary System Using load Modulation
Takuma Ito, Naoki Honma, Keisuke Terasaki (Iwate Univ.), Kentaro Nishimori (Niigata Univ.), Yoshitaka Tsunekawa (Iwate Univ.) AP2013-79
Controlling interference from the secondary system (SS) to the receiver of the primary system (PS) is important issues w... [more] AP2013-79
pp.95-100
AP, SAT
(Joint)
2012-07-27
14:30
Hokkaido Hokkaido Univ. Characteristic evaluation of Passive MIMO Transmission Using Load Modulation
Keisuke Terasaki, Naoki Honma (Iwate Univ.) AP2012-60
In this paper, we propose multi-level modulation in the passive Multiple-Input Multiple-Output (MIMO) transmission that ... [more] AP2012-60
pp.173-178
SIP, EA 2004-09-16
- 2004-09-17
Shimane Matsue College of Technology Spectral Analysis of Load Switching Signal From Contactless IC Card
Sadahiko Nakano, Yoshimitsu Ohtani (NTT SP Lab.)
This paper analyses the spectrum of the load switching signal from a contactless IC card. First, we expand the ideal lo... [more]
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