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 Conference Papers (Available on Advance Programs)  (Sort by: Date Descending)
 Results 1 - 20 of 117  /  [Next]  
Committee Date Time Place Paper Title / Authors Abstract Paper #
AP, SANE, SAT
(Joint)
2022-07-27
14:30
Hokkaido Asahikawa Taisetsu Crystal Hall
(Primary: On-site, Secondary: Online)
Wideband Orthogonal 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
13:05
Hokkaido Asahikawa Taisetsu Crystal Hall
(Primary: On-site, Secondary: Online)
Decoupling Method For Multiple Planar Inverted-F Antennas Using Parasitic Elements and Bridge Elements
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 2022-02-18
10:25
Online Online [Invited Lecture] Various decoupling methods between MIMO antennas Part 2.
Hiroshi Sato, Yoshio Koyanagi (Panasonic), Masaharu Takahashi (Chiba university), Hisashi Morishita (National Defense Academy) AP2021-169
In order to realize large-capacity wireless communication, it is common to install MIMO technology in a small terminal. ... [more] AP2021-169
pp.61-66
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]
AP, RCS
(Joint)
2021-11-12
10:20
Nagasaki NBC-Bekkan (Nagasaki)
(Primary: On-site, Secondary: Online)
Orthogonal Polarized Antenna Using Wideband Halo Antenna
Tomokazu Mizutani, Naobumi Michishita (NDA), Hiroshi Sato, Yoshio Koyanagi (Panasonic), Hisashi Morishita (NDA) AP2021-122
 [more] AP2021-122
pp.112-115
AP, RCS
(Joint)
2021-11-12
10:55
Nagasaki NBC-Bekkan (Nagasaki)
(Primary: On-site, Secondary: Online)
Study on reduction of electromagnetic coupling between two antennas using Characteristic Mode Analysis
Hiroshi Sato (Panasonic), Phung Quang Quan (NDA), Yoshio Koyanagi (Panasonic), Hisashi Morishita (NDA) AP2021-123
In order to reduce the size of information terminals, it is necessary to minimize the required volume of antennas by arr... [more] AP2021-123
pp.116-121
AP, RCS
(Joint)
2021-11-12
11:20
Nagasaki NBC-Bekkan (Nagasaki)
(Primary: On-site, Secondary: Online)
A Sidelobe Reduction for Dual Frequency and Polarization Reflectarray
Hiroshi Hashiguchi, Naobumi Michishita, Hisashi Morishita (National Defense Academy), Hiromi Matsuno, Takuya Ohto, Masayuki Nakano (KDDI Research, Inc) AP2021-124
 [more] AP2021-124
pp.122-125
MIKA
(3rd)
2021-10-29
10:30
Okinawa
(Primary: On-site, Secondary: Online)
[Poster Presentation] Planar Sleeve Antenna with Choke Structure Composed of Zeroth-Order Resonator
Keisuke Sakakibara, Hiroshi Hashiguchi, Naobumi Michishita, Hisashi Morishita (National Defense Academy)
A choke structure of the sleeve antenna is required to suppress the leakage current. However, the choke length is 1/4 wa... [more]
AP, SANE, SAT
(Joint)
2021-07-29
10:50
Online Online Planar Sleeve Antenna with Choke Structure Composed of Zeroth-Order Resonator
Keisuke Sakakibara, Hiroshi Hashiguchi, Naobumi Michishita, Hisashi Morishita (National Defense Academy) AP2021-34
A choke structure is required to suppress the leakage current of the sleeve antenna. The miniaturized sleeve antenna has... [more] AP2021-34
pp.61-64
AP
(2nd)
2021-06-18
11:05
Online Online Measurement of Cylindrical Cloak by Controlling Arrangement Density of Multi-Layer Ceramic Capacitors
Thanh Binh Nguyen, Hiroshi Hashiguchi, Naobumi Michishita, Hisashi Morishita (National Defense Academy), Teruki Miyazaki, Masato Tadokoro (Yokohama Rubber Co., Ltd)
 [more]
AP 2021-06-17
15:05
Online Online [Invited Lecture] RCS Measurement Using Compact Range System
Hisashi Morishita (National Defense Academy) AP2021-22
Radar Cross Section (RCS) are used not only in aircraft and ships but also in automobiles and human fingers, which is im... [more] AP2021-22
pp.19-24
AP 2021-05-21
09:45
Online Online Mutual Coupling Reduction Between Dipole Antennas Using Mantle Cloak
Thanh Binh Nguyen, Naobumi Michishita, Hisashi Morishita (National Defense Academy), Teruki Miyazaki, Masato Tadokoro (Yokohama Rubber Co., Ltd.) AP2021-10
Recently, systems such as mobile terminals and digital terrestrial television broadcasting, ITS, RFID are used in the UH... [more] AP2021-10
pp.7-11
AP
(2nd)
2020-12-10
09:35
Okinawa Nobumoto Ohama Memorial Hall
(Primary: On-site, Secondary: Online)
Bistatic RCS Measurement of Dual Band and Dual Polarized Reflectarray
Cong Oai Nguyen, Kazuya Matsubayashi, Naobumi Michishita, Hisashi Morishita (National Defense Academy), Hiromi Matsuno, Satoshi Ito, Takahiro Hayashi, Masayuki Nakano (KDDI Research)
In the fifth generation wireless communication systems, high frequency band such as the 28 GHz is used to high data rate... [more]
RCS, AP, UWT
(Joint)
2020-11-25
09:25
Online Online Mantle Cloak Antenna by Controlling Surface Reactance of Dielectric Loaded Dipole Antenna
Thanh Binh Nguyen, Naobumi Michishita, Hisashi Morishita (National Defense Academy), Teruki Miyazaki, Masato Tadokoro (The Yokohama Rubber Co., Ltd.) AP2020-73
Recently, antennas for various systems are often placed in proximity in a narrow space with the miniaturization of wirel... [more] AP2020-73
pp.1-6
MW, AP
(Joint)
2020-09-25
09:00
Online Online A Study on Decoupling Method for Two PIFAs Using Parasitic Elements and Consideration by Characteristic Mode Analysis
Quang Quan Phung, Naobumi Michishita (NDA), Hiroshi Sato, Yoshio Koyanagi (Panasonic), Hisashi Morishita (NDA) AP2020-59
Recently, Massive MIMO (Multiple-Input Multiple-Output) has been developed as an elemental technology for next-generatio... [more] AP2020-59
pp.116-120
MW, AP
(Joint)
2020-09-25
09:25
Online Online A Study on Reduction of Electromagnetic Coupling between Symmetric Antennas Using Even-odd Mode Analysis
Hiroshi Sato (panasonic), Phung Quang Quan (NDA), Kazuhiro Eguchi, Yoshio Koyanagi (panasonic), Hisashi Morishita (NDA) AP2020-60
In recent information terminals, MIMO technology that uses multiple antennas is often used for stable communication of l... [more] AP2020-60
pp.121-126
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