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 Conference Papers (Available on Advance Programs)  (Sort by: Date Descending)
 Results 21 - 40 of 135 [Previous]  /  [Next]  
Committee Date Time Place Paper Title / Authors Abstract Paper #
EST 2015-09-03
10:30
Okinawa Oohama-Nobumoto-Kinenkan, Ishigaki Island, Okinawa, Japan Statistical Analysis of Rain Toward Route Switching of Millimeter-Wave Wireless Network
Takuichi Hirano, Jiro Hirokawa, Makoto Ando (Tokyo Tech.), Riichiro Nagareda, Akira Yamaguchi (KDDI Labs.), Hitoshi Nagahori, Toru Taniguchi (JRC) EST2015-54
Statistic properties of rainfall in Tokyo are presented in this report. Average rain duration as a function of rain rate... [more] EST2015-54
pp.7-11
AP, SANE
(Joint)
2015-08-28
09:30
Ibaraki Ibaragi Univ. Mito Campus Study of Reception Zone in a Millimeter Wave Compact-Range Wireless Access System Using a Large Array Antenna
Koji Toyosaki, Miao Zhang, Jiro Hirokawa, Kiyomichi Araki, Makoto Ando (Tokyo Tech) AP2015-67
The millimeter-wave compact-range wireless access system using a large array antenna can provide an uniform
signal rece... [more]
AP2015-67
pp.37-41
MoNA 2015-08-05
09:55
Hyogo Kobe University Centennial Hall (Rokko Hall) A Study on Inter-flow Network Coding with Passive ACK for Efficient and Reliable Bidirectional Communication -- Optimal Waiting Time for Encoding and Timing Control for Passive ACK --
Makoto Ando, Yumi Takaki, Chikara Ohta, Hisashi Tamaki (Kobe Univ.) MoNA2015-17
In wireless multihop bidirectional communication environment, there is a possibility that packet collision and retransmi... [more] MoNA2015-17
pp.43-48
AP 2015-07-30
13:30
Hokkaido Wakkanai Sougou Bunka Center Evaluations of Coverage and Intersymbol Interference in a 60 GHz-Band Compact-Range Wireless Access System using Large Array Antennas
Miao Zhang, Kiyomichi Araki, Jiro Hirokawa, Makoto Ando (Tokyo Tech.) AP2015-44
A compact-range wireless access system in the 60 GHz-band has been proposed for multi-Gb/s data transfer. A prototype Gi... [more] AP2015-44
pp.27-32
AP 2015-07-30
13:55
Hokkaido Wakkanai Sougou Bunka Center Intersymbol Interference Analysis of a Compact-range High-speed Wireless Communication System using Traveling-wave-fed Slot Arrays
Masahiro Wakasa, Miao Zhang, Jiro Hirokawa, Kiyomichi Araki, Makoto Ando (Tokyo Tech.) AP2015-45
A demand for high-capacity communication systems is increasing dramatically in recent years. A compact-range communicati... [more] AP2015-45
pp.33-37
EMT, MW, OPE, MWP, EST, IEE-EMT [detail] 2015-07-17
13:25
Hokkaido Kushiro City Lifelong Learning Center Design of a Pentagonal Patch Antenna Attached to the Body
Takuichi Hirano, Jiro Hirokawa, Makoto Ando (Tokyo Tech), Takamaro Kikkawa (Hiroshima Univ.) EMT2015-38 MW2015-76 OPE2015-50 EST2015-42 MWP2015-41
Antennas must be designed with considering human body in applications such as ultra wideband (UWB) radar for breast canc... [more] EMT2015-38 MW2015-76 OPE2015-50 EST2015-42 MWP2015-41
pp.171-174
AP 2015-04-22
14:00
Okinawa Ishigaki City Design of a T-shaped bandpass filter integrating in the corporate-feed waveguide of a waveguide slot array antenna
Xin Xu, Jiro Hirokawa, Makoto Ando (Tokyo Tech.) AP2015-3
In this paper, we propose a waveguide slot array antenna by integration of T-shaped filters using the diffusion bonding ... [more] AP2015-3
pp.9-12
AP 2015-04-22
14:25
Okinawa Ishigaki City Design of Two-dimensional Beam-switching Butler Matrix using Short-Slot Two-plane Couplers
Dong-Hun Kim, Jiro Hirokawa, Makoto Ando (TITECH) AP2015-4
A two-dimensional (2-D) beam-switching Butler matrix using short-slot two-plane couplers is proposed. A short-slot 2-pla... [more] AP2015-4
pp.13-16
EST, OPE, LQE, EMT, PN, MWP, IEE-EMT [detail] 2015-01-29
14:15
Osaka   Beam Steering of 60 GHz-Band Array-Antenna Utilizing Radio-over-Fiber Technique
Kyo Minoguchi (Tokyo Tech), Masayuki Oishi (KDDI Labs.), Takayoshi Hirasawa (Tokyo Tech), Shigeyuki Akiba (KDDI Labs.), Jiro Hirokawa, Makoto Ando (Tokyo Tech) PN2014-36 OPE2014-161 LQE2014-148 EST2014-90 MWP2014-58
We report an experimental study of beam steering for 60 GHz-band array-antenna utilizing Radio-over-Fiber (RoF) techniqu... [more] PN2014-36 OPE2014-161 LQE2014-148 EST2014-90 MWP2014-58
pp.53-56
EST, OPE, LQE, EMT, PN, MWP, IEE-EMT [detail] 2015-01-30
17:25
Osaka   Analysis of Effective Material Property for Two Dimensional Periodic Arrays of Metal Strips
Takuichi Hirano, Jiro Hirokawa, Makoto Ando (Tokyo Tech.) PN2014-76 OPE2014-201 LQE2014-188 EST2014-130 MWP2014-98
Millimeter-wave complementary metal oxide semiconductor (CMOS) radio frequency (RF) circuits have been received substant... [more] PN2014-76 OPE2014-201 LQE2014-188 EST2014-130 MWP2014-98
pp.321-325
MW, ED 2015-01-16
15:45
Tokyo Kikai-Shinko-Kaikan Bldg. Slot Design for Aperture Illumination Control of RLSA with High Loss Substrates
Tung Nguyen, Makoto Ando, Jiro Hirokawa (Tokyo Inst. of Tech.), Manuel Sierra Castaner (UPM) ED2014-136 MW2014-200
Recent studies suggest that the uses of high loss dielectric waveguides in the Radial Line Slot Antenna (RLSA) might be ... [more] ED2014-136 MW2014-200
pp.111-116
AP, RCS
(Joint)
2014-11-13
09:00
Yamagata Yamagata University, Yonezawa Campus A Two-Slot Antenna inserting an Edge of a Mobile Device Substrate for the 60GHz Band
Kohei Ito, Jiro Hirokawa, Kimio Sakurai, Makoto Ando (Tokyo Tech) AP2014-139
In this paper, we propose a two-slot antenna inserting an edge of a mobile device substrate for the 60 GHz band. The siz... [more] AP2014-139
pp.61-65
EMCJ, IEE-EMC, MW, EST [detail] 2014-10-24
11:10
Akita Akita Prefectural Univ. Electromagnetic Simulation of a Circular Patch Antenna at 2.45 GHz Band Attached to the Body
Takuichi Hirano, Jiro Hirokawa, Makoto Ando (Tokyo Tech.), Takamaro Kikkawa (Hroshima Univ.) EMCJ2014-59 MW2014-115 EST2014-73
Antennas must be designed with considering human body in applications such as ultra wideband (UWB) radar for breast canc... [more] EMCJ2014-59 MW2014-115 EST2014-73
pp.97-100
AP, WPT
(Joint)
2014-10-16
13:20
Hokkaido Hokkaido University, Clark Memorial Student Center Wideband design of a perturbed circular-polarization aperture antenna excited by an X-shaped cavity
Tatsuya Yamamoto, Miao Zhang, Jiro Hirokawa, Takuichi Hirano, Makoto Ando (Tokyo Tech) AP2014-117
The circularly-polarized plate-laminated waveguide slot array antenna achieved 3.3% bandwidth for antenna efficiency mor... [more] AP2014-117
pp.49-54
AP, MW
(Joint)
2014-09-18
12:45
Tokyo Tokyo Institute of Technology, Ookayama Campus Accurate field reconstruction of radial line slot antennas using the Gerchberg-Papoulis iterative algorithm
Makoto Sano (Tokyo Inst. of Tech.), Manuel Sierra-Castaner (Technical Univ. of Madrid), Jiro Hirokawa, Makoto Ando (Tokyo Inst. of Tech.) AP2014-95
A technique for reconstructing the electric field distribution on slot array antennas from near-field data is presented.... [more] AP2014-95
pp.19-22
AP, MW
(Joint)
2014-09-18
13:10
Tokyo Tokyo Institute of Technology, Ookayama Campus Error Reduction of Shortened Far-Field Gain Measurement with Least-Square Curve Fitting
Yuki Iida, Takuichi Hirano, Makoto Ando, Jiro Hirokawa (Tokyo Inst. of Tech.) AP2014-96
Shortened far-field measurement has been proposed for one of gain measurements in far field that is unnecessary to repla... [more] AP2014-96
pp.23-26
EMCJ, EST 2014-09-12
15:40
Hokkaido Kitami Inst. Technology Influence and De-Embedding of SMA Connectors in Microwave Measurements
Takuichi Hirano, Jiro Hirokawa, Makoto Ando (Tokyo Inst. of Tech.) EMCJ2014-42 EST2014-56
SubMiniature version A (SMA) connectors are often used in microwave measurement. Connectors are necessary to connect cab... [more] EMCJ2014-42 EST2014-56
pp.63-67
MoNA, CQ
(Joint)
2014-09-12
09:40
Miyagi   Performance Evaluation of Efficient Reliable Packet Transfer Protocol for Wireless Multihop Bidirectional Communication Environment
Makoto Ando, Yumi Takaki, Chikara Ohta, Hisashi Tamaki (Kobe Univ.) MoNA2014-39
Bidirectional traffic flow appears in multi-sink wireless sensor networks (WSN) depending on their topologies. The aim o... [more] MoNA2014-39
pp.49-54
AP, SANE
(Joint)
2014-08-28
12:45
Niigata Niigata University Satellite campus [Invited Lecture] Compact X-band Synthetic Aperture Radar for 100kg Class Satellite
Hirobumi Saito, Prilando Rizki Akbar, Atsushi Tomiki (JAXA), Ravindra Vinay, Ryohei Naruse, Budhaditya Pyne (Univ. of Tokyo), Miao Zhang, Jiro Hirokawa, Makoto Ando (Tokyo Inst. of Tech.) AP2014-75 SANE2014-50
 [more] AP2014-75 SANE2014-50
pp.19-24(AP), pp.13-18(SANE)
MW, OPE, EMT, MWP, EST, IEE-EMT [detail] 2014-07-17
16:10
Hokkaido Muroran Inst. of Tech. A Study of Gain Calculation for Antennas in a Lossy Medium
Takuichi Hirano, Jiro Hirokawa, Makoto Ando (Tokyo Tech) MW2014-68 OPE2014-37 EST2014-29 MWP2014-26
Propagation characteristic in a lossy media need to be considered in some applications such as ultra wideband (UWB) rada... [more] MW2014-68 OPE2014-37 EST2014-29 MWP2014-26
pp.113-116
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