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 Conference Papers (Available on Advance Programs)  (Sort by: Date Descending)
 Results 1 - 20 of 97  /  [Next]  
Committee Date Time Place Paper Title / Authors Abstract Paper #
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)
 [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
AP
(2nd)
2020-08-24
14:35
Online Online Study on the Configuration of Slit on Bowtie Antenna for Miniaturization and Bandwidth Enhancement
Hikaru Takizawa, Kazuya Matsubayashi, Naobumi Michishita, Hisashi Morishita (National Defense Academy)
A folded bow-tie antenna is one of the small and wideband antennas. Miniaturization of the folded bow-tie
antenna is p... [more]

AP 2020-08-21
09:00
Online Online Dual Frequency and Polarized Reflectarray Using Cross Dipole and Patch Elements
Cong Oai Nguyen, Naobumi Michishita, Hisashi Morishita (Natinal Defense Acad.), Hiromi Matsuno, Satoshi Ito, Takahiro Hayashi, Masayuki Nakano (KDDI Research) AP2020-23
 [more] AP2020-23
pp.1-4
AP 2020-05-21
13:00
Okinawa Tiruru Okinawa (Naha-city)
(Cancelled, technical report was not issued)
Dual Frequency and Polarized Reflectarray Using Cross Dipole and Patch Elements
Cong Oai Nguyen, Naobumi Michishita, Hisashi Morishita (National Defense Acad.), Hiromi Matsuno, Satoshi Ito, Takahiro Hayashi, Masayuki Nakano (KDDI Research)
 [more]
AP 2020-04-24
09:40
Mie Jingu-kaikan (Ise)
(Cancelled but technical report was issued)
Improvement of Radiation Efficiency by Slot Elements on Metal Box Using Characteristic Mode Analysis
Takumi Nishime, Naobumi Michishita, Hisashi Morishita (National Defense Academy) AP2020-4
 [more] AP2020-4
pp.19-22
AP, WPT
(Joint)
2020-01-23
11:10
Kagawa Sunport Hall Takamatsu Triple Resonances Small Spherical Antenna with Parasitic Elements
Hikaru Takizawa, Takahiro Hashimoto, Takumi Nishime, Nguyen Cong Oai, Naobumi Michishita, Hisashi Morishita (National Defense Academy) AP2019-156
A small spherical antenna is one of the electrically small antennas which has Q-factor approaching the lower bound on Q.... [more] AP2019-156
pp.37-41
AP, WPT
(Joint)
2020-01-23
16:00
Kagawa Sunport Hall Takamatsu Circular Folded Dipole Antenna for RFID Tag on Metallic Cylinder
Takahiro Hashimoto, Naobumi Michishita, Hisashi Morishita (National Defense Academy), Takayuki Koshi (Komatsu Ltd.) AP2019-162
Recently, the use of UHF (Ultra-High Frequency) RFID (Radio-Frequency Identification) technology has been studied to man... [more] AP2019-162
pp.67-72
AP, RCS
(Joint)
2019-11-21
11:20
Saga Saga Univ. Equivalent circuit parameters reducing beam squint of left-handed leaky wave antenna
Kazuki Terada, Keizo Cho, Hiroaki Nakabayashi (CIT), Naobumi Michishita (NDA), Ichiro Oshima (DKK) AP2019-122
A rod-like leaky wave antenna composed of CRLH transmission lines has been proposed as a base station antenna for small ... [more] AP2019-122
pp.91-94
AP, RCS
(Joint)
2019-11-22
10:55
Saga Saga Univ. [Tutorial Lecture] Application of Meta-material to Base Station Antennas for Mobile Communication Systems
Keizo Cho (Chiba Inst. Tech), Naobumi Michishita (National Defense Academy), Ichiro Oshima (DKK) AP2019-133 RCS2019-228
 [more] AP2019-133 RCS2019-228
pp.145-150(AP), pp.139-144(RCS)
AP 2019-08-23
10:20
Hokkaido Hokkai-Gakuen Univ. A Fundamental Study of Impedance Variable Folded Monopole Antenna Using Switching Element
Yuta Nakagawa, Oai Nguyen Cong, Naobumi Michishita, Hisashi Morishita (National Defense Academy) AP2019-65
In order to achieve an antenna with robustness to metal for closed space wireless communications, the impedance characte... [more] AP2019-65
pp.97-100
AP
(2nd)

Overseas Hotel Istana, Kuala Lumpur Phase Variation Analysis of Leaky Wave Antenna Composed of CRLH Transmission Line Using Equivalent Circuit
Kazuki Terada, Keizo Cho, Hiroaki Nakabayashi (CIT), Naobumi Michishita (NDA), Takayoshi Sasaki, Keisuke Sato, Ichiro Oshima (DKK)
A leaky wave antenna configured by CRLH transmission lines has been proposed. There is a problem that the direction of t... [more]
AP, SANE, SAT
(Joint)
2019-07-18
10:50
Miyagi Tohoku Univ. Study on Miniaturization of Bowtie Antenna with Folded Structure for Ground Penetrating Radar
Hikaru Takizawa, Kazuya Matsubayashi, Naobumi Michishita, Hisashi Morishita (NDA) SANE2019-28
The antenna of GPR(Ground Penetrating Radar) used for the exploration such as buried objects under rubble at the time of... [more] SANE2019-28
pp.55-59
AP
(2nd)
2019-06-25
15:25
Hokkaido Wakkanai City Japan-Russia Friendship Hall Leakage current suppression of broadband monocone antenna by using electromagnetic band gap characteristics
Kazuya Matsubayashi, Naobumi Michishita, Hisashi Morishita (NDA)
The composite right/left-handed (CRLH) coaxial line (CL) is applied to the broadband choke structure for a monocone ante... [more]
AP 2019-02-22
14:25
Osaka Sumitomo Electric Industries (Osaka Works) [Invited Lecture] CRLH Transmission Line Leaky Wave Antenna with Dual Band and Dual Polarized Wave by Grounded Coplanar Transmission Line
Takayoshi Sasaki, Keisuke Sato, Ichiro Oshima (DKK), Naobumi Michishita (NDA), Keizo Cho (CIT) AP2018-183
The authors have developed a left-handed leaky wave sector antenna with a grounded coplanar line so far. In this report,... [more] AP2018-183
pp.77-82
RCS, AP
(Joint)
2018-11-22
09:50
Okinawa Okinawa Industry Support Center Thin Cylindrical Cloaking Using Multi-layer Ceramic Capacitors
Nguyen Thanh Binh, Naobumi Michishita, Hisashi Morishita (National Defense Academy), Teruki Miyazaki, Masato Tadokoro (The Yokohama Rubber Co., Ltd.) AP2018-129
Recently, electromagnetic cloaking designed based on the transformation electromagnetics has attracted much attention. T... [more] AP2018-129
pp.157-160
AP 2018-08-23
13:35
Saitama Nippon Inst. of Tech. A fundamental Study on Near-metal-Insensitive antenna for installation on metal walls
Yuta Nakagawa, Naobumi Michishita, Hisashi Morishita (National Defense Academy) AP2018-72
In order to achieve a near-metal-insensitive antenna for closed-space wireless communications, the impedance characteris... [more] AP2018-72
pp.29-33
AP 2018-08-23
15:10
Saitama Nippon Inst. of Tech. [Tutorial Lecture] Electromagnetic Metamaterials for Antenna Applications
Naobumi Michishita, Hisashi Morishita (National Defense Academy) AP2018-75
Electromagnetic metamaterials are defined as artificial effectively homogeneous electrmagnetic structures with unusual p... [more] AP2018-75
pp.45-50
AP
(2nd)
2018-06-29
11:10
Tokyo Jinbo-cho Takahashi Bldg. 7F Monostatic RCS Measurement of Metasurfaces Using Multi-Layer Ceramic Capacitors
Naoyuki Kinai, Naobumi Michishita, Hisashi Morishita (National Defense Academy), Teruki Miyazaki, Masato Tadokoro (The Yokohama Rubber Co., Ltd.)
To miniaturize the size of the unit cell structure for the metasurface, this paper presents the metasurface using multi-... [more]
 Results 1 - 20 of 97  /  [Next]  
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