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 Conference Papers (Available on Advance Programs)  (Sort by: Date Descending)
 Results 1 - 20 of 63  /  [Next]  
Committee Date Time Place Paper Title / Authors Abstract Paper #
RCS, SR, SRW
(Joint)
2024-03-14
10:30
Tokyo The University of Tokyo (Hongo Campus), and online
(Primary: On-site, Secondary: Online)
[Short Paper] A Study on Cell ID Detection Performance by Phase Rotation with Fast Beam Steering
Kotaro Tanaka, Hideya So (SIT), Kazuki Maruta (TUS), Takana Kaho (SIT) SR2023-97
Beamforming using multiple antenna elements has been considered to increase high-speed wireless communications, but it r... [more] SR2023-97
pp.49-51
SAT, SANE
(Joint)
2024-02-09
11:20
Kagoshima AmaHome PLAZA (Amami City Shimin Koryu Center)
(Primary: On-site, Secondary: Online)
[Short Paper] Time-varying investigation of Iridium satellite positioning of a balloon during stratospheric flight over Antarctica
Rikito Matsuo, Takana Kaho (Shonan Inst. Tech.), Yoshitaka Saito, Masahiro Yamatani (JAXA), Yoshihiro Tomikawa (NIPR) SAT2023-72
We are conducting an experiment to acquire data from sensors mounted on an atmospheric balloon flying in the stratospher... [more] SAT2023-72
pp.69-71
SAT, SANE
(Joint)
2024-02-09
11:35
Kagoshima AmaHome PLAZA (Amami City Shimin Koryu Center)
(Primary: On-site, Secondary: Online)
[Short Paper] Evaluation of Beam Steering Angle of 64-Element Staircase Array Antenna Using Patch Antenna with Parasitic Elements
Ayano Yano, Hideya So, Takana Kaho (Shonan Inst. Tech.) SAT2023-73
Massive MIMO using multiple antenna elements is being considered to increase the speed and capacity of wireless communic... [more] SAT2023-73
pp.72-74
SAT, SANE
(Joint)
2024-02-09
15:35
Kagoshima AmaHome PLAZA (Amami City Shimin Koryu Center)
(Primary: On-site, Secondary: Online)
Study on estimating balloon position in the stratosphere using time variation of Iridium satellite positioning information
Takana Kaho (Shonan Inst. Tech.), Yoshitaka Saito, Masahiro Yamatani (JAXA), Yoshihiro Tomikawa (NIPR) SAT2023-78
We are conducting an experiment to acquire sensor data mounted on a high-altitude balloon flying in the stratosphere usi... [more] SAT2023-78
pp.93-98
ED, MW 2024-01-26
14:50
Tokyo Kikai-Shinko-Kaikan Bldg.
(Primary: On-site, Secondary: Online)
[Invited Talk] Research on Phased Array Antenna Device for Beyond 5G
Takana Kaho, Hideya So, Koji Matsunaga (Shonan Inst. Tech.) ED2023-80 MW2023-172
Beyond 5G mobile communication systems are expected to use higher frequencies, and base station equipment is required to... [more] ED2023-80 MW2023-172
pp.75-80
AP, RCS
(Joint)
2023-11-15
13:25
Kumamoto Kumamoto Prefectural Workers' Welfare Hall
(Primary: On-site, Secondary: Online)
Performance Evaluation of Beam Search Scheme using Fast Beam Steering
Hideya So, Kouki Namegaya (SIT), Kazuki Maruta (TUS), Takana Kaho (SIT) RCS2023-156
This report proposes a multiple beam searches with fast beam steering within a single synchronization signal block (SSB)... [more] RCS2023-156
pp.24-28
MW, EMCJ, EST, IEE-EMC [detail] 2023-10-20
09:40
Yamagata Yamagata University
(Primary: On-site, Secondary: Online)
Evaluation of DPD Compensation and Modulation Bandwidth Dependence of GaN Doherty Amplifier Using 5G NR TDD Signals
Ayano Yano, Takana Kaho (Shonan Inst. Tech.), Shuichi Sakata, Yuji Komatsuzaki, Koji Yamanaka (Mitsubishi Electric) EMCJ2023-58 MW2023-112 EST2023-85
We are researching broadband GaN amplifiers for base stations covering 4G/5G frequencies. We built a measurement system ... [more] EMCJ2023-58 MW2023-112 EST2023-85
pp.119-124
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
AP 2023-03-17
14:10
Toyama Toyama Prefectural Civic Hall
(Primary: On-site, Secondary: Online)
Experimental Evaluation of Staircase Array Antenna employing Butler Matrix
Hideya So, Takana Kaho (SIT), Yasuyoshi Yamamoto, Mizuki Suga, Yuta Takahashi, Yushi Shirato, Naoki Kita (NTT) AP2022-249
The authors have proposed a staircase array antenna consisting of a one-dimensional butler matrix and patch array antenn... [more] AP2022-249
pp.87-92
SANE, SAT
(Joint)
2023-03-02
11:40
Okinawa
(Primary: On-site, Secondary: Online)
Altitude and Location Dependence of Iridium Positioning Error in Balloon Experiments
Takato Suzuki, Takana Kaho (Shonan Inst. Tech.), Yoshitaka Saito, Masahiro Yamatani (JAXA), Yoshihiro Tomikawa (NIPR) SAT2022-61
We are conducting experiments to acquire data from sensors mounted on high-altitude balloons using short burst communica... [more] SAT2022-61
pp.34-39
PN 2023-03-01
15:10
Okinawa
(Primary: On-site, Secondary: Online)
[Invited Talk] High-speed beam steering technology toward Beyond 5G
Hideyuki Nosaka (Ritsumeikan Univ.), Takana Kaho (SIT), Tetsuya Kawanishi (Waseda Univ.) PN2022-46
Towards Beyond 5G systems, high-speed beam steering technology is required to realize innovative functions such as high-... [more] PN2022-46
pp.23-27
MW, ED 2023-01-27
11:00
Tokyo Kikai-Shinko-Kaikan Bldg.
(Primary: On-site, Secondary: Online)
Measurement Evaluation of Bias Dependence of Single-Input Broadband GaN Amplifier
Yuki Nakagawa, Takana Kaho (Shonan Inst. Tech.), Shuichi Sakata, Yuji Komatsuzaki, Koji Yamanaka (MELCO) ED2022-89 MW2022-148
We are researching a broadband GaN amplifier for 4G/5G base stations covering a 4GHz band from 800MHz to 4.8GHz. We aim ... [more] ED2022-89 MW2022-148
pp.19-24
MW, ED 2023-01-27
15:25
Tokyo Kikai-Shinko-Kaikan Bldg.
(Primary: On-site, Secondary: Online)
[Invited Talk] Requierements for sharing type 4G/5G base station transciever amplifiers
Koji Yamanaka, Yuji Komatsuzaki, Shuichi Sakata, Kento Saiki (Mitsubishi Electric), Takana Kaho (SIT) ED2022-96 MW2022-155
In post-5G era (latter half of 2020s), mobile base-stations are assumed to be shared between mobile operators to reduce ... [more] ED2022-96 MW2022-155
p.50
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
SAT, RCS
(Joint)
2022-08-25
09:50
Hokkaido
(Primary: On-site, Secondary: Online)
Experimental Evaluation of Positioning Error of Super Pressure Balloon over Antarctica Using Iridium Satellite
Takana Kaho, Takato Suzuki (Shonan Inst. Tech.), Yoshitaka Saito (JAXA), Yoshihiro Tomikawa (NIPR) SAT2022-28
 [more] SAT2022-28
pp.1-6
RCC, WBS, SAT, MICT 2022-05-26
13:50
Online Online Communication Experiment over Antarctica using Iridium Satellite Short Burst Communication
Takana Kaho (Shonan Inst. of Tech.), Yoshitaka Saito (JAXA), Yoshihiro Tomikawa (NIPR) WBS2022-8 RCC2022-8 SAT2022-8 MICT2022-8
An experiment (LODEWAVE) was conducted from January to February 2022 to measure the atmospheric gravity wave over the An... [more] WBS2022-8 RCC2022-8 SAT2022-8 MICT2022-8
pp.34-39
MW 2022-03-03
14:25
Online Online Examination of Measurement Evaluation System of 2-input GaN Amplifier Using Vector Transceiver
Haruki Mori, Takato Suzuki, Takana Kaho (Shonan Inst. Tech.), Yuji Komatsuzaki, Kento Saiki, Koji Yamanaka (Mitsubishi Electric) MW2021-122
 [more] MW2021-122
pp.63-68
AP, WPT
(Joint)
2022-01-21
13:30
Tottori Kenmin-Fureai-Kaikan
(Primary: On-site, Secondary: Online)
Proposal on Novel Staircase Array Antenna Configuration utilizing Stacked Butler Matrix
Hideya So, Yoshitada Watanabe, Takana Kaho (SIT), Mizuki Suga, Takuto Arai, Yushi Shirato, Hideki Toshinaga, Daisei Uchida, Naoki Kita (NTT) AP2021-151
Massive Multiple-Input Multiple-Output (Massive MIMO), which uses a large number of antenna elements, has been investiga... [more] AP2021-151
pp.92-97
MW 2021-12-16
14:50
Kanagawa Kawasaki City Industrial Promotion Hall
(Primary: On-site, Secondary: Online)
Evaluation of distortion compensation characteristics of wideband GaN amplifier with multi-carrier input
Haruki Mori, Kouki Hattori, Takana Kaho (Shonan Inst. Tech.), Yuji Komatsuzaki, Kento Saiki, Koji Yamanaka (Mitsubishi Electric) MW2021-91
 [more] MW2021-91
pp.37-42
AP, SANE, SAT
(Joint)
2021-07-28
14:30
Online Online LOng-Duration balloon Experiment of gravity WAVE over Antarctica (LODEWAVE) -- Data transmission from super-pressure balloons using Iridium satellites --
Yoshitaka Saito (JAXA), Yoshihiro Tomikawa (NIPR), Isao Murata (Tohoku Univ.), Takana Kaho (SIT), Takashi Kanno (MEC) SAT2021-21
(To be available after the conference date) [more] SAT2021-21
pp.7-11
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