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 Conference Papers (Available on Advance Programs)  (Sort by: Date Descending)
 90件中 1~20件目  /  [Next]  
Committee Date Time Place Paper Title / Authors Abstract Paper #
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]
AP 2018-06-21
13:55
Tokyo Kikai-Shinko-Kaikan Bldg. Study of Low-Profile Cone Antenna with Trapezoidal Shaped Element
Kazuya Matsubayashi, Naobumi Michishita, Hisashi Morishita (National Defense Academy) AP2018-39
Small and low-profile antenna is necessary for moving vehicle to communicate various information. However, downsizing of... [more] AP2018-39
pp.9-13
AP
(2nd)
2018-05-30
09:50
Overseas The University of Da nang, University of Science and Technology Characteristics of Folded Bow Tie Antenna with a Reflector
Jun Abiru, Naobumi Michishita, Hisashi Morishita (National Defense Academy), Kenji Kawabata, Yasuhiro Murakami (Fujitsu)
Broadband and small antennas have been required for various applications, such as high speed data communication and subs... [more]
AP
(2nd)
2018-05-30
10:25
Overseas The University of Da nang, University of Science and Technology Left-Handed Metamaterial Composed of Multi-Layer Ceramic Capacitors and Strip Conductors
Thanh Binh Nguyen, Naobumi Michishita, Hisashi Morishita (National Defense Academy), Teruki Miyazaki, Masato Tadokoro (The Yokohama Rubber)
A composition of a split ring resonator and a strip conductor, a composition of a multilayer ceramic capacitor (MLCC) an... [more]
AP
(2nd)
2018-05-30
10:45
Overseas The University of Da nang, University of Science and Technology Metasurfaces Composed of Multi-Layered Ceramic Capacitors Mounted on Dielectric Substrate for Radar Cross Section Reduction
Naoyuki Kinai, Naobumi Michishita, Hisashi Morishita (National Defense Academy), Teruki Miyazaki, Masato Tadokoro (The Yokohama Rubber Co., Ltd.)
Typical metasurface structures consist of patch and mushroom structures. To reduce the size of the unit cell structure, ... [more]
AP
(2nd)
2018-05-30
14:05
Overseas The University of Da nang, University of Science and Technology Simulation results of input resistance dependence on dielectric constants of materials surrounding a normal-mode helical antenna
Dang Tien Dung, Nguyen Quoc Dinh, Kieu Khac Phuong (LQDTU), Le Trong Trung (TCU), Yoshihide Yamada (UTM), Naobumi Michishita (NDA)
Currently, normal-mode helical antennas (NMHA) are studying for use as in Radio Wave Sensor (RWS) in the human body. The... [more]
AP
(2nd)
2018-05-30
15:20
Overseas The University of Da nang, University of Science and Technology Current Rejection Characteristics of Coaxially Fed Antenna with Choke Structure Using Composite Right/Left-Handed Coaxial Line
Takatsugu Fukushima, Naobumi Michishita, Hisashi Morishita (National Defense Academy), Naoya Fujimoto (Hitachi Kokusai Electric)
A coaxially fed antenna with a choke structure composed of a composite right/left-handed coaxial line (CRLH CL) has been... [more]
AP
(2nd)
2018-05-30
16:15
Overseas The University of Da nang, University of Science and Technology Characteristic Mode Analysis for U-Shaped Dipole Antenna
Naoki Akiyama, Quan Phung Quang, Yuka Ishii, Naobumi Michishita, Hisashi Morishita (National Defense Academy)
The recent portable terminal equipment including smart phone have various functions and have been required high performa... [more]
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