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 Conference Papers (Available on Advance Programs)  (Sort by: Date Descending)
 Results 1 - 15 of 15  /   
Committee Date Time Place Paper Title / Authors Abstract Paper #
AP
(2nd)
2023-06-01
10:00
Nagano Nagano Prefecture Minamimaki Village Office, Central Public Hall Experimental Study on Variable Control of Scattering Pattern in Metasurface Reflector in Horizontal and Vertical Directions
Yuko Rikuta, Yuki Kimura, Akira Maruyama, Hiroki Hagiwara (DENGYO)
In a wireless environment where radio waves are transmitted and received, the location and size of the communication are... [more]
AP 2023-02-15
11:50
Miyagi Tohoku University, Aobayama Campus
(Primary: On-site, Secondary: Online)
[Invited Lecture] A Study of Thin Planar Antenna for dual-Frequency and dual Polarization -- Low Profile Antenna Consisting of Patch Antenna and Dipole Antenna --
Hiroki Hagiwara, Akira Maruyama, Yuko Rikuta (DENGYO) AP2022-202
With the development of mobile communication, a multi-frequency band antenna capable of transmitting and receiving radio... [more] AP2022-202
pp.29-33
AP
(2nd)
2022-06-10
11:25
Hokkaido Nemuro General Cultural Center
(Primary: On-site, Secondary: Online)
9-Frequency Band Small Planar Antenna for Base Station - Small Version
Yutaka Tomizawa, Yuta Nakashima, Hiroki Hagiwara (Dengyo), Masayuki Nakano (KDDI Research)
Some radio base station antennas share two or more frequencies. This time, about the multi-band polarization shared smal... [more]
AP 2022-02-18
10:50
Online Online [Invited Lecture] A study on controlling the direction of the scattering pattern on meta-surface reflector
Hiroki Hagiwara, Akira Maruyama (DENGYO) AP2021-170
 [more] AP2021-170
pp.67-72
AP
(2nd)
2021-06-18
11:30
Online Online A Study of Scattering Pattern Measurement on Meta-surface Reflector
Yuko Rikuta, Lin Wang, Hiroki Hagiwara, Toshiyuki Kobayashi (DENGYO)
Quasi-millimeter-wave band such as 28 GHz band used in the fifth generation wireless communications has high straightnes... [more]
AP, SANE, SAT
(Joint)
2019-07-18
15:20
Miyagi Tohoku Univ. [Invited Lecture] Propagation Characteristics in a L-shaped Corridor by Antenna Directivity at 28 GHz Band
Mayumi Yoshino, Doppo Sugimura, Hiroki Hagiwara, Tomoaki Kudo, Toshiyuki Kobayashi (Dengyo) AP2019-36
For the next generation mobile communication system, it is important to understand propagation characteristics at high f... [more] AP2019-36
pp.79-82
AP 2019-05-16
13:05
Hyogo Kanpo-no-yado Arima (Arima Onsen, Hyogo) Received Power Fluctuation by Antenna Directivity at 4.5 GHz and 28 GHz Bands
Mayumi Yoshino, Doppo Sugimura, Ryunosuke Murofushi, Hiroki Hagiwara, Tomoaki Kudo, Toshiyuki Kobayashi (Dengyo) AP2019-1
For the next generation mobile communication system in recent years, high frequency bands such as 4.5 GHz and 28 GHz are... [more] AP2019-1
pp.1-6
AP 2019-02-22
12:35
Osaka Sumitomo Electric Industries (Osaka Works) Decoupling of Dipole Array on Patch Type Meta-Surface with C-Type Parasitic Element
Yuki Kawakami (NIT, Fukui College), Ryuji Kuse (Kumamoto Univ.), Toshikazu Hori (Univ. of Fukui), Yuko Rikuta, Hiroki Hagiwara (Nihon Dengyo Kosaku Co., LTD.) AP2018-179
A low-profile antenna can be designed by using a meta-surface as a reflector. Besides, putting a parasitic element betwe... [more] AP2018-179
pp.55-58
AP 2019-02-22
14:50
Osaka Sumitomo Electric Industries (Osaka Works) [Invited Lecture] Base station antenna using transparent conductive film
Hiroki Hagiwara, Akira Maruyama (Nihon Dengyo) AP2018-184
A metal ceiling is generally used at the meet-up area of building like a lobby, and there it is desirable to install the... [more] AP2018-184
pp.83-87
AP 2015-02-20
09:25
Hyogo Chusho-kigyou center at Amagasaki-City [Invited Lecture] A design method of multi-frequency small antenna
Masanori Kaneko, Hiroki Hagiwara, Hironori Kakefuda (Dengyo) AP2014-198
Recently, an indoor antenna is required to cover multiband frequency with a structural miniaturization. In general, as t... [more] AP2014-198
pp.65-69
MRIS, ITE-MMS 2014-07-17
13:25
Tokyo Tokyo Institute of Technology Fabrication of ultra-high density nanodot arrays with high coercivity based on analysis of initial deposition process
Hiroki Hagiwara, Siggi Wodarz, Tomohiro Otani, Daiki Nishiie (Waseda Univ.), Giovanni Zangari (UVA), Takayuki Homma (Waseda Univ.) MR2014-9
We have attempted to fabricate ferromagnetic nanodot arrays for bit patterned media (BPM) by using electrochemical proce... [more] MR2014-9
pp.7-10
MRIS, ITE-MMS 2013-11-15
13:25
Tokyo Waseda Univ. Characterization and analysis of deposition behavior of ultra-high density ferromagnetic nanodot arrays fabricated by electrochemical processes
Siggi Wodarz, Yuta Maniwa, Hiroki Hagiwara, Tomohiro Otani, Daiki Nishiie (Waseda Univ.), Giovanni Zangari (UVA), Takayuki Homma (Waseda Univ.) MR2013-20
We fabricated hcp-Co80Pt20 and L10-FePt thin films and nanodot arrays onto hcp-Ru (002) / Si substrate by electrodeposit... [more] MR2013-20
pp.7-10
MRIS, ITE-MMS 2013-07-12
14:15
Tokyo Chuo Univ. Characterization and analysis of deposition process of ultra-high density magnetic nanodot arrays fabricated by electrochemical processes
Siggi Wodarz, Yuta Maniwa, Hiroki Hagiwara, Takayuki Homma (Waseda Univ.) MR2013-8
We have been fabricating ferromagnetic nanodot arrays for bit patterned media (BPM) by using lithography techniques and ... [more] MR2013-8
pp.13-17
MRIS, ITE-MMS 2012-11-16
13:50
Tokyo Waseda Univ. Fabrication and characterization of ultra-high density magnetic nanodot arrays fabricated electrochemical processes.
Atsushi Takami, Yuta Maniwa, Siggi Wodarz, Hiroki Hagiwara, Takayuki Homma (Waseda Univ.)
 [more]
EA 2010-12-10
10:00
Ibaraki Univ. of Tsukuba Wave front reproduction using the spatial covariance matrices method
Hiroki Hagiwara (Kogakuin Univ.), Yoshinori Takahashi (Tokyo Metro. College of Industrial Tech./Kogakuin Univ.), Kazunori Miyoshi (Kogakuin Univ.) EA2010-97
This paper describes a sound-field reproduction method called a Co-Variance Method (CVM) that reproduces a spatial covar... [more] EA2010-97
pp.1-6
 Results 1 - 15 of 15  /   
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