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 |