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Search Results: Conference Papers
 Conference Papers (Available on Advance Programs)  (Sort by: Date Descending)
 Results 1 - 20 of 125  /  [Next]  
Committee Date Time Place Paper Title / Authors Abstract Paper #
AP 2024-03-14
13:00
Fukui UNIVERSITY OF FUKUI
(Primary: On-site, Secondary: Online)
[Invited Talk (Young Researcher)] Miniaturized structure of orthogonally polarized omnidirectional antenna with wideband characteristics
Tomokazu Mizutani, Hiroshi Hashiguchi, Naobumi Michishita (National Defense Academy), Hiroshi Sato, Yoshio Koyanagi (PSNRD), Hisashi Morishita (National Defense Academy)
(To be available after the conference date) [more]
AP 2024-03-14
13:25
Fukui UNIVERSITY OF FUKUI
(Primary: On-site, Secondary: Online)
[Invited Talk (Young Researcher)] Design Method of Platform Excitation Antenna and Feeding Structure
Takumi Nishime, Hiroshi Hashiguchi, Naobumi Michishita (National Defense Academy)
(To be available after the conference date) [more]
AP 2024-02-16
16:00
Mie Sinfonia Technology Hibiki Hall Ise
(Primary: On-site, Secondary: Online)
Wideband Vertical Polarized Omnidirectional Antenna Using Cylindrical Slot Loop
Sho Hirano, Tomokazu Mizutani, Hiroshi Hashiguchi, Naobumi Michishita (National Defense Academy) AP2023-199
 [more] AP2023-199
pp.62-65
AP, WPT
(Joint)
2024-01-18
15:45
Niigata Niigata Univ.
(Primary: On-site, Secondary: Online)
[Invited Lecture] Gain Enhancement of Low-profile Folded Dipole Antenna Array
Go Kasahara, Takumi Nishime, Hiroshi Hashiguchi, Naobumi Michishita (National Defense Academy) AP2023-174
The gain of a low-profile antenna can be improved by loading a dielectric layer. In this report, we investigate a low-pr... [more] AP2023-174
pp.77-80
AP
(2nd)
2024-01-08
- 2024-01-10
Overseas EPU, Hanoi Transmit array elements that tilt beam through glass using Huygens' metamaterials.
Kenta Fujii, Keizo Cho (CIT), Naobumi Michishita (NDA), Hiroaki Nakabayashi (CIT), Takayoshi Sasaki, Warangkana Chaihongsa, Keisuke Sato, Ichiro Oshima (DKK)
In this paper, we discuss the design of a transmit array capable of transmitting 28 GHz band radio waves through glass w... [more]
AP
(2nd)
2023-12-07
14:15
Wakayama Kiboukan (Nanki Shirahama) Simple Measurement Method for Reflectarray Using Monostatic-Bistatic Equivalence Theorem
Keiji Swairi, Hiroshi Hashiguchi, Naobumi Michishita (National Defense Academy)
In fifth-generation mobile communications, coverage holes are concerned due to the use of millimeter-wave bands. Reflect... [more]
AP, RCS
(Joint)
2023-11-17
14:30
Kumamoto Kumamoto Prefectural Workers' Welfare Hall
(Primary: On-site, Secondary: Online)
Mutual coupling suppression by a square rod mantle cloak antenna with strip conductors
Shuhei Ozawa, Hiroshi Hashiguchi, Naobumi Michishita (National Defense Academy), Kiyoshi Sakimoto, Teruki Miyazaki, Masato Tadokoro (The Yokohama Rubber Co., Ltd.) AP2023-153
Various mantle-cloak antennas have been proposed to suppress mutual coupling. However, the bandwidth between operating f... [more] AP2023-153
pp.121-126
AP 2023-05-12
14:40
Okinawa Okinawa Gender Equality Center
(Primary: On-site, Secondary: Online)
Mantle Cloak Antennas with Rejection Band in Close Frequency
Naobumi Michishita, Shuhei Ozawa, Hiroshi Hashiguchi (National Defense Academy), Kiyoshi Sakimoto, Teruki Miyazaki, Masato Tadokoro (The Yokohama Rubber Co., Ltd.) AP2023-21
Various mantle-cloak antennas have been proposed to suppress mutual coupling. However, the operating frequency band and ... [more] AP2023-21
pp.70-74
AP 2023-03-17
13:10
Toyama Toyama Prefectural Civic Hall
(Primary: On-site, Secondary: Online)
[Invited Talk (Young Researcher)] A Study on Decoupling Method Operating at Single and Dual-Frequency for Planar Inverted-F Antennas by Using Parasitic Elements and Bridge Line
Quang Quan Phung, Naobumi Michishita (NDA), Hiroshi Sato, Yoshio Koyanagi (Panasonic), Hisashi Morishita (NDA) AP2022-247
In recent years, Multiple-Input Multiple-Output (MIMO) is known as an elemental technology for next-generation communica... [more] AP2022-247
pp.76-80
AP 2023-02-16
14:15
Miyagi Tohoku University, Aobayama Campus
(Primary: On-site, Secondary: Online)
[Invited Lecture] A Compact Beam Forming Antenna based on Phase Gradient Huygen's Transmitarray and Fabry-Perot Antenna Source
Takayoshi Sasaki, Tanan Hongnara, Yoshiki Shirasawa, Warangkana Chaihongsa, Katsumori Sasaki, Keisuke Sato, Ichiro Ohshima (DKK), Keizo Cho, Hiroaki Nakabayashi (CIT), Naobumi Michishita (NDA) AP2022-217
In this report, we propose a compact and low profile antenna with controllable directivity by combining a Fabry-Perot re... [more] AP2022-217
pp.111-115
AP
(2nd)
2022-12-08
14:40
Okinawa
(Primary: On-site, Secondary: Online)
Measurement of Bistatic RCS Characteristics for Incident angle of Reflectarray by Source Reconstrcution
Hiroshi Hashiguchi, Naobumi Michishita, Hisashi Morishita (National Defense Academy), Hiromi Matsuno, Takuya Ohto, Masayuki Nakano (KDDI Research, Inc)
 [more]
AP 2022-08-19
11:20
Tochigi Tochigi Prefecture Industrial Center
(Primary: On-site, Secondary: Online)
Dual-Polarized Bipartite Huygens' Metasurface with Anomalous Wave Reflection for Local 5G Application at 28.25 GHz
Tanan Hongnara, Takayoshi Sasaki, Yoshiki Shirasawa, Katsumori Sasaki, Keisuke Sato, Ichiro Oshima (DKK), Naobumi Michishita (NDA), Hiroaki Nakabayashi, Keizo Cho (CIT) AP2022-66
This paper presents a design of dual-polarized bipartite Huygens’s metasurface (HMTS) for Local 5G application at 28.25 ... [more] AP2022-66
pp.11-16
AP, SANE, SAT
(Joint)
2022-07-27
14:30
Hokkaido Asahikawa Taisetsu Crystal Hall
(Primary: On-site, Secondary: Online)
A Study on Increasing the Bandwidth of Orthogonally Polarized Omnidirectional Antenna Using Halo Antenna
Tomokazu Mizutani, Naobumi Michishita (NDA), Hiroshi Sato, Yoshio Koyanagi (PSNRD), Hisashi Morishita (NDA) AP2022-41
Recently, orthogonal polarization MIMO antennas have attracted attention as antennas for cell phone base stations. In th... [more] AP2022-41
pp.40-43
AP, SANE, SAT
(Joint)
2022-07-29
12:40
Hokkaido Asahikawa Taisetsu Crystal Hall
(Primary: On-site, Secondary: Online)
A Study of equivalent circuit parameters of Huygens' metasurface lense capable of changing transmission phase with low loss
Maria Ishida, Keizo Cho (Chiba Inst of Tech), Naobumi Michishita (National Defense Academy), Tanan Hongnara, Takayoshi sasaki, Warangkana Chaihongsa, Keisuke Sato, Ichiro Oshima (DKK), Hiroaki Nakabayashi (Chiba Inst of Tech) AP2022-58
Huygens metasurfaces have attracted attention as a method of constructing thin lenses. In this report, we present the re... [more] AP2022-58
pp.135-139
AP, SANE, SAT
(Joint)
2022-07-29
13:05
Hokkaido Asahikawa Taisetsu Crystal Hall
(Primary: On-site, Secondary: Online)
A Study on Decoupling Method for Multiple Planar Inverted-F Antennas by Using Parasitic Elements and Bridge Lines
Phung Quang Quan, Naobumi Michishita (NDA), Hiroshi Sato, Yoshio Koyanagi (Panasonic), Hisashi Morishita (NDA) AP2022-59
In recent years, Multiple-Input Multiple-Output (MIMO) is known as an elemental technology for next-generation communica... [more] AP2022-59
pp.140-144
AP
(2nd)
2022-06-10
10:35
Hokkaido Nemuro General Cultural Center
(Primary: On-site, Secondary: Online)
Characteristics of an Antenna Composed of Metal Box with a Slot and Inner Folded Dipole Element
Yukiko Wada, Naobumi Michishita, Hisashi Morishita (NDA), Atsushi Yamamoto, Kazuhiro Matsumoto, Tetsuya Hishikawa (Panasonic Corp.)
 [more]
AP
(2nd)
2022-06-10
11:00
Hokkaido Nemuro General Cultural Center
(Primary: On-site, Secondary: Online)
A Helmet Antenna with Disk-Loaded Monopole Structure for Disaster Prevention
Taiyo Kai, Naobumi Michishita, Hisashi Morishita (NDA)
 [more]
AP 2022-04-15
11:25
Yamagata Yamagata Syokuryo Kaikan
(Primary: On-site, Secondary: Online)
Excitation of Traveling Wave on Metal Casing Using Folded Dipole Antenna
Takumi Nishime, Hiroshi Hashiguchi, Naobumi Michishita, Hisashi Morishita (National Defense Academy) AP2022-5
Multiple antennas have been installed on mobile devices. Frequency bands used for communication are shifting to higher f... [more] AP2022-5
pp.24-27
AP 2022-03-10
16:25
Online Online [Invited Talk (Young Researcher)] Mutual Coupling Reduction Between Antennas by Using Electromagnetic Cloaking
Thanh Binh Nguyen, Hiroshi Hashiguchi, Naobumi Michishita, Hisashi Morishita (National Defense Academy), Teruki Miyazaki, Masato Tadokoro (The Yokohama Rubber Co., Ltd.) AP2021-191
Recently, with the increase in 5G and IoT (Internet of Thing) devices, the interference inside and outside wireless devi... [more] AP2021-191
pp.50-55
AP
(2nd)
2021-12-02
11:10
Okinawa Miyakojima
(Primary: On-site, Secondary: Online)
A Study on Decoupling Method Operating at Single and Dual-Frequency for Planar Inverted-F Antennas by Using Parasitic Elements
Quang Quan Phung, Naobumi Michishita (National Defense Academy), Hiroshi Sato, Yoshio Koyanagi (Panasonic System Networks R&D Lab.), Hisashi Morishita (National Defense Academy)
In recent years, Multiple-Input Multiple-Output (MIMO) is known as an elemental technology for next-generation communica... [more]
 Results 1 - 20 of 125  /  [Next]  
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