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Search Results: Conference Papers
 Conference Papers (Available on Advance Programs)  (Sort by: Date Descending)
 Results 1 - 17 of 17  /   
Committee Date Time Place Paper Title / Authors Abstract Paper #
UWT
(2nd)
2022-03-01
14:05
Online Online Formulation and Validation of the Transmission Factor Between Two Electrically Small Dipole Antennas Immersed in Seawater
Takashi Kawamura, Takuma Matsushita, Toshinori Kondo, Futoshi Takeuchi, Kazuhiro Hongo, Yasuhiro Matsui, Takashi Takinami, Akihiro Horii, Kazunobu Ohkuri (Sony Group)
As one of the theoretical approaches to reveal antenna behavior in the sea, it has been reported that the impedances of ... [more]
WPT, UWT
(Joint)
2021-11-12
14:45
Online Online Formulation, Validation, and Extensibility Study on the Impedance of Underwater Dipole Antennas
Takuma Matsushita, Takashi Kawamura, Toshinori Kondo, Futoshi Takeuchi, Yasuhiro Matsui, Takashi Takinami, Kazuhiro Hongo, Akihiro Horii, Kazunobu Ohkuri (Sony Group Corp.)
This paper describes the theoretical formulation for half sheath dipole antenna(HSDA) and adaption area of this formulat... [more]
AP
(2nd)
2018-06-29
10:00
Tokyo Jinbo-cho Takahashi Bldg. 7F [Invited Talk] Anritsu's effort of a Near-Field measurement
Takashi Kawamura (Anritsu)
 [more]
RCS, SR, SRW
(Joint)
2018-02-28
14:10
Kanagawa YRP [Invited Talk] The Present Condition and the Prospects of the 300GHz Spectrum Analysis Technology Development
Hanako Noda, Yuji Sekine, Shikeo Arai, Takashi Kawamura, Masaaki Fuse, Shigenori Mattori (Anritsu) SRW2017-72
Millimeter-wave technology has high development potential for industry, and recent research is progressing into developm... [more] SRW2017-72
p.37
SRW 2016-10-17
11:15
Kanagawa Anritsu Proposal for Near Field Measurement of Active Antenna System Using Adjacent Probes Phase Difference
Aya Yamamoto, Takashi Kawamura, Masaaki Fuse (Anritsu) SRW2016-47
An active antenna into which transceivers are integrated will not supply the reference radio signal without measuring RF... [more] SRW2016-47
pp.19-24
SRW 2016-10-17
13:20
Kanagawa Anritsu The Construction of 300GHz Millimeter-wave Spectrum Measurement Instrument
Yuji Sekine, Shigeo Arai, Takashi Kawamura, Masaaki Fuse, Shigenori Mattori, Hanako Noda (Anritsu) SRW2016-49
Recently, researches and developments which are beneficial for short-range and large traffic communications are progress... [more] SRW2016-49
pp.31-36
CNR 2015-06-29
14:45
Tokyo   A Project on Curling as a Science
Takeshi Ito (UEC), Fumito Masui, Katsumi Miyakoshi (KIT), Takashi Kawamura (SU), Masahito Yamamoto (HU), Yoshinari Takekawa (FUN), Hitoshi Yanagi (KIT), Hitoshi Matsubara (FUN) CNR2015-2
Curling is a winter sport with an advanced strategy called "chess on ice." However, curling is a game including many unc... [more] CNR2015-2
pp.5-10
WPT 2015-06-12
15:10
Tokyo Univ. of Tokyo Power-Controllable Bidirectional Wireless Charging System with Simple Structure
Takashi Kawamura, Tetsuo Fusato (Denki Kogyo Co., Ltd.) WPT2015-27
We analyzed equivalent circuits of wireless power transfer using magnetic resonant coupling which are based on the trans... [more] WPT2015-27
pp.37-42
CS, CAS, SIP 2014-03-06
13:25
Osaka Osaka City University Media Center High-speed Petri Net Simulation Using Matrix Compression and GPGPU
Takashi Kawamura, Yoichiro Sato, Tomoyuki Yokogawa (Okayama Prefectural Univ.), Masafumi Kondo (Kawasaki Univ. of Medical Welfare), Kazutami Arimoto (Okayama Prefectural Univ.) CAS2013-106 SIP2013-152 CS2013-119
We proposed a method of evaluating performance of large scale digital systems by modeling with the STPN and executing pe... [more] CAS2013-106 SIP2013-152 CS2013-119
pp.91-96
AP
(2nd)
2013-05-31
15:15
Ehime Matsuyama Multi-Purpose Community Center Investigation of low loss half-mirror for tunable filter over 100 GHz
Takashi Kawamura, Akihito Otani (Anritsu)
Rapid advances in millimeter-wave wireless communication technologies require accurate spectrum analysis in the frequenc... [more]
ACT
(2nd)
2010-12-22
14:20
Okinawa   Comparisons of Various TRP Measurement Methods for Small Radio Terminals -- Three-Dimensional Integral Method, Reverberation Chamber Method, and Spheroidal Coupler Method --
Takashi Kawamura, Aya Yamamoto, Toru Sakuma, Yasuhiko Nago, Tasuku Teshirogi (Anritsu), Hiroji Saito (TELEC), Katsushige Harima, Tsutomu Sugiyama (NICT)
Recently TRP measurement of the small radio terminals over the air becomes important. Various methods have been used. Mo... [more]
AP, RCS
(Joint)
2010-11-11
13:30
Fukui Fukui Univ. Total Radiated Power Measurement of Antenna-Integrated Radios Using a Spheroidal Coupler -- Accuracy Improvement by Estimating EUT Reflection Coefficient Using Phase Rotation Method --
Takashi Kawamura, Aya Yamamoto, Toru Sakuma, Yasuhiko Nago, Tasuku Teshirogi (Anritsu) AP2010-103
Recently “antenna integrated radios” have been increasing rapidly which do not have terminals for monitoring Tx output p... [more] AP2010-103
pp.63-68
AP 2010-01-21
16:10
Yamaguchi Yamaguchi University Total radiated power (TRP) measurement system for small radio terminals using a spheroidal coupler combined with a variable matching circuit
Takashi Kawamura, Aya Yamamoto, Toru Sakuma, Yukiyasu Kimura, Yasuhiko Nago, Tasuku Teshirogi (Anritsu) AP2009-168
Recently “antenna integrated radios” have been increasing rapidly which do not have terminals for monitoring Tx output ... [more] AP2009-168
pp.75-80
ACT
(2nd)
2009-09-04
14:55
Kyoto Keihanna Plaza Total radiated power (TRP) measurement of small radio terminals using a spheroidal coupler (3) -- Improvement of the coupling factor by a variable matching circuit --
Takashi Kawamura, Aya Yamamoto, Toru Sakuma, Yukiyasu Kimura, Yasuhiko Nago, Tasuku Teshirogi (Anritsu)
Recently “antenna integrated radios” have been increasing rapidly which do not have terminals for monitoring Tx output ... [more]
ACT
(2nd)
2009-06-04
14:35
Tokyo TELEC Total radiated power (TRP) measurement of small radio terminals using a spheroidal coupler (2)
Takashi Kawamura, Aya Yamamoto, Toru Sakuma, Yukiyasu Kimura, Yasuhiko Nago, Tasuku Teshirogi (Anritsu Corp.)
Recently “antenna integrated radios” have been increasing rapidly which do not have terminals for monitoring Tx output ... [more]
AP 2008-03-14
13:25
Aichi Nanzan Univ. Total radiated power (TRP) measurement of small radio terminals using a spheroidal coupler
Tasuku Teshirogi, Aya Yamamoto, Takashi Kawamura, Toru Sakuma (Anritsu) AP2007-192
Recent small radio terminals require radiation measurements to obtain their electrical performances because most of them... [more] AP2007-192
pp.113-118
ITE-BCT, IEE-CMN, OCS, OFT
(Joint) [detail]
2006-11-16
16:10
Tokyo   Recycling technology of optical fiber cable
Yuichi Watanabe (TEPCO), Hideaki Kambe, Masaru Nakajima, Takashi Kawamura (FURUKAWA ELECTRIC)
Most of removal and remaining optical fiber cables that occurred by construction are burnt up or buried as industrial wa... [more] OCS2006-61 OFT2006-46
pp.1-6(OCS), pp.31-36(OFT)
 Results 1 - 17 of 17  /   
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