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检索条件"机构=Combat System R&D Lab"

共 167 条记录，以下是11-20 订阅

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Optically Transparent dual-Polarized Metasurface at 150 GHz Using Laser Cutting Technology

Optically Transparent Dual-Polarized Metasurface at 150 GHz ...

引用

Antennas and Propagation & USNC/UrSI National radio Science Meeting

作者： Kosei Nakano Masatoshi Suzuki Tomoki Abe Toshiki Mori Hiroshi Takahashi Masataka Irie Koji Takinami Panasonic Industry Co. Ltd. Kanagawa Japan Panasonic System Networks R&D Lab. Co. Ltd. Kanazawa Japan

ISBN: (数字)9798350369908

ISBN: (纸本)9798350369915

This paper proposes a novel optically transparent passive metasurface and its fabrication method, aiming at reducing the costs for providing a wide range of reflectors with different reflection angles. The method adopts a common design pattern regardless of the reflection angles, and the design pattern is customized by post-processing using laser cutting technology according to the required angle. We present an optically transparent dual-polarized metasurface reflector composed of a 30×30 array. Simulation results have revealed that desired angles of 27°, 43°, and 63° are successfully achieved at 158 GHz. The proposed method will significantly reduce the manufacturing costs and contribute to the widespread adoption of metasurfaces toward 6G.

关键词： 6G mobile communication Costs Optical design Simulation Optical device fabrication Metasurfaces reflection

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development of High Optically Transparent reconfigurable Intelligent Surface for 5G

Development of High Optically Transparent Reconfigurable Int...

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Antennas and Propagation & USNC/UrSI National radio Science Meeting

作者： Masatoshi Suzuki Kosei Nakano Toshiki Mori Hiroshi Takahashi Masataka Irie Panasonic Industry Co. Ltd. Kanagawa Japan Panasonic System Networks R&D Lab. Co. Ltd. Kanazawa Japan

ISBN: (数字)9798350369908

ISBN: (纸本)9798350369915

This paper presents a novel approach to reconfigurable Intelligent Surfaces (rIS) technology, aimed at improving radio coverage in 5G and 6G networks. We propose a new reflective element structure for rIS, designed to maintain over 80% transparency and excellent cross-polarization discrimination, without compromising aesthetic considerations. A prototype rIS was fabricated using a transparent conductive film with fine wiring, demonstrating the ability to alter the reflection angle from the frontal direction to 28 degrees in the 28 GHz band, while meeting the target cross-polarization discrimination value.

关键词： Wiring 5G mobile communication Grounding Optical device fabrication Prototypes reconfigurable intelligent surfaces reflection

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150 GHz Embedded Patch Antenna With radiation From the Substrate Edge for Antenna-in-Package

150 GHz Embedded Patch Antenna With Radiation From the Subst...

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2023 IEEE International Symposium on Antennas and Propagation, ISAP 2023

作者： Hasaba, ryosuke Takahashi, Ken Abe, Tomoki Morishita, Yohei Murata, Tomohiro Takinami, Koji Taneda, Hiroshi Engineering Divison Panasonic Industry Co. Ltd. Yokohama Japan Engineering Divison Panasonic System Networks R&D Lab. Co. Ltd Kanazawa Japan Research & Development Div. Shinko Electric Industries Co. Ltd Nagano Japan

ISBN: (纸本)9798350341140

In recent years, multi-element antenna modules consisting of multiple antenna elements and rF front ends have been considered to satisfy high-gain, wide-angle antennas in the subterahertz band. This paper discusses a loop-shaped patch antenna with radiation from the substrate edge. The antenna is a substrate-embedded antenna made of copper foil and vias, and good antenna characteristics with a frontal gain of 8.4 dBi and a half angle of 62 degrees at 157.75 GHz are achieved by simulation. © 2023 IEEE.

关键词： 150 GHz antenna-in-package end-fire patch antenna substrated-integrated

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design of Endfire Antenna in SIW with Step Structure in Multilayer Substrate at 300GHz Band

Design of Endfire Antenna in SIW with Step Structure in Mult...

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International Symposium on Antennas and Propagation (ISAP)

作者： daisuke Sakai Yoshiki Sugimoto Kunio Sakakibara Ken Takahashi Nobuyoshi Kikuma Department of Electrical and Mechanical Engineering Nagoya Institute of Technology Nagoya Japan Panasonic System Networks R&D Lab. Co. Ltd. Kanazawa Japan

ISBN: (数字)9798350364774

ISBN: (纸本)9798350364781

An endfire antenna is developed in this work. A step structure fed from the middle layer to the aperture is formed in the multilayer substrate. The lengths of the steps are approximately a quarter wavelength in the substrate to operate as an impedance transformer. The lengths of the steps are optimized to match over wide frequency bandwidth. The matching characteristics and the radiation performances are presented in this paper.

关键词： Horn antennas Bandwidth Nonhomogeneous media Transformers reflection coefficient Broadband communication Impedance Broadband antennas Substrates Periodic structures

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Optimal Operation of Green Hydrogen Generation Plant with Solar PV, renewable Energy Certificates and Virtual Battery Ledger

Optimal Operation of Green Hydrogen Generation Plant with So...

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Annual Conference of Industrial Electronics Society

作者： Kyaw Hein dominique Bertin Justine Yuan Huajun Zhang Victor Maquart Edouard Lavillonniere Asia Pacific R&D Department EDF LAB EDF France SYSTEM Department Planning Protection and Study of Disturbances on Intelligent Electrical Networks

Hydrogen fuel is a flexible and clean secondary energy source or carrier enabling renewable energy transition. In existing markets, hydrogen is generated from coal, fossil fuels, and natural gas, resulting in brown or grey hydrogen. However, renewable energy sources can improve the color index of hydrogen. This research article presents the optimal and economical operation of a green hydrogen production plant with an electrolyzer, solar photovoltaic (PV), grid connection, renewable Energy Certificates (rECs), and Virtual Battery Ledger (VBL). rECs concept tracks the renewable energy generation from the PV plant. VBL keeps an accounting of rECs creation, expiration, and trading. rECs are expired when used by an electrolyzer or transacted on the block-chain enabled trading platform (e.g., Singapore Power rECs Marketplace). The study demonstrates the possibility of generating green hydrogen with an efficient virtual accounting method and energy management strategy.

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Orthogonal Polarized Omnidirectional Antenna Composed of double-Shell Halo Antenna and dipole Antenna

Orthogonal Polarized Omnidirectional Antenna Composed of Dou...

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International Symposium on Antennas and Propagation (ISAP)

作者： Tomokazu Mizutani Hiroshi Hashiguchi Naobumi Michishita Hiroshi Sato Yoshio Koyanagi Hisashi Morishita Graduate School of Science and Engineering National Defense Academy Yokosuka Japan Panasonic System Networks R&D Lab. Tuzuki Yokohama Japan

This paper presents, compact wideband orthogonal polarized omnidirectional antenna. The proposed antenna is the combination of a Halo antenna with double-shell structure and a dipole antenna. The antenna characteristics are clarified by the simulation. To improve the directivity deviation between both polarizations, this antenna is loaded with two short elements on the opposite side of the aperture of the Halo antenna and parasitic element so as not to contact each other. As a result of the simulation, the characteristics of the proposed antenna are that the relative bandwidth is 9.0%, and the antenna height and diameter are 0.46λ 0 and 0.14λ 0 (λ 0 the wavelength of the center operational frequency), respectively.

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Autonomous vehicle navigation using high-definition maps through CArLA-rOS simulator bridge

Autonomous vehicle navigation using high-definition maps thr...

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2022 International Symposium on Intelligent Unmanned systems and Artificial Intelligence, SIUSAI 2022

作者： Fatima, H. Sundus Abbas, Ammar N. Bawany, Faraz Zia, Huma Yusuf, Syed Adnan Khurram, Muhammad Computer and Information System Smart City Lab NCAI NED University Pakistan Abu Dhabi University Dubai United Arab Emirates R&D Department Intelexica Pvt Ltd SouthamptonSO152RZ United Kingdom

Autonomous vehicles (AV) have garnered significant interest in recent years due to its potential for controlling thousands of accidents that happen yearly due to human error. However, AV bring with it very complex and sophisticated requirements and challenges related to extensive testing of the algorithms and hardware in the physical world. The evolution of automotive simulation tools provides an opportunity to fully test and validate AV architectures without the risk of creating hazardous situations in real world. This research demonstrates the application of Hd (High definition) maps in autonomous vehicle navigation using rOS interface integrated with the CArLA (CAr Learning to Act) simulator. The sensor data includes Light detection and ranging (LidAr), rGB-depth (rGB-d), and vehicle odometry. Hd maps play an important role in robustness of the autonomous systems where due to sensor obstruction or weather conditions the vehicle is unable to perceive the information ahead. It also aids the vehicle to sense its environment even outside from the sensor's field of view. The research is divided into the three fundamental concepts of Simultaneous Localization and Mapping (SLAM) approach that is, (i) mapping, (ii) localization, and (iii) navigation. Two rOS tools are used for mapping, (a) OctoMap mapping, and (ii) real-Time Appearance-Based Mapping (rTAB-Map). We demonstrate the effectiveness of localization using rTAB-Map and compare actual path, position and orientation to their estimated equivalents. Our results show acceptable error in XY axes and exemplifies the error accumulated in Z axis. © Published under licence by IOP Publishing Ltd.

关键词： Mapping

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A dual-Polarized Sub-THz Huygens' Metasurface with a Two-Layer Structure

A Dual-Polarized Sub-THz Huygens' Metasurface with a Two-Lay...

引用

Antennas and Propagation & USNC/UrSI National radio Science Meeting

作者： Tomoki Abe ryosuke Hasaba Ken Takahashi Tomohiro Murata Koji Takinami Issei Watanabe Panasonic Industry Co. Ltd. Kanagawa Japan Panasonic System Networks R&D Lab. Co. Ltd. Kanazawa Japan National Institute of Information and Communications Technology Tokyo Japan

ISBN: (数字)9798350369908

ISBN: (纸本)9798350369915

This paper proposes tilted beam formation using a novel double-layer dual-polarized Huygens' metasurface for the sub-THz frequency band. Firstly, the characteristics of a unit cell for the metasurface are investigated. It is revealed that the proposed unit cell realizes a transmission phase change of more than 360° when a plane wave impinges on the unit cell. Secondly, a square metasurface composed of numerous unit cells is placed above a fed horn antenna to form a high-gain tilted beam at an angle of $\theta=-45^{\circ}$ . The simulation reveals that a tilted beam is formed in the designed direction and a gain of approximately 16 dBi is obtained at a design frequency of 170 GHz. The $\vert \mathrm{S}11\vert$ of the horn antenna is less than -10 dB around the design frequency.

关键词： Horn antennas Conferences Transmitting antennas Transforms directive antennas Metasurfaces Antennas and propagation

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Virtual Metrology using Transfer Learning with domain Knowledge

Virtual Metrology using Transfer Learning with Domain Knowle...

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Joint e-Manufacturing and design Collaboration Symposium (eMdC) & International Symposium on Semiconductor Manufacturing (ISSM)

作者： Masaaki Takada Kazuya Kikuchi Xueting Wang Takumi Ito Gen Li Itakura Akihiro Yasuhisa Oomuro System AI Lab. Advanced Intelligent Systems Corporate R&D Center Toshiba Corporation Kawasaki-shi Japan Advanced Semiconductor Device Development Center Toshiba Electronic Devices & Storage Corporation Ishikawa Japan

ISBN: (数字)9798331510589

ISBN: (纸本)9798331510596

Virtual Metrology (VM) is essential in semiconductor manufacturing for predicting wafer properties using sensor data. However, building accurate VM is challenging due to issues like high dimensionality and nonstationarity. Traditional methods such as Lasso perform feature selection and parameter estimation simultaneously; however they may conflict with domain knowledge. We introduce Weighted Transfer Lasso, a novel method that incorporates domain knowledge into the regression model. Experiments using reactive ion etching data demonstrate improved accuracy and consistency compared to traditional methods, highlighting its potential for reliable VM updates.

关键词： Semiconductor device modeling Accuracy Parameter estimation Transfer learning Semiconductor device manufacture Metrology Ions Feature extraction Production facilities reliability

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Incremental Search-Based Allocation of Autonomous robots for Goods delivery

Incremental Search-Based Allocation of Autonomous Robots for...

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Congress on Evolutionary Computation

作者： Paolo Arcaini Ezequiel Castellano Fuyuki Ishikawa Hirokazu Kawamoto Kaoru Sawai Eiichi Muramoto National Institute of Informatics Tokyo Japan Panasonic Holdings Corporation Tokyo Japan Panasonic System Networks R&D Lab. Co. Ltd. Miyagi Japan

Autonomous robots can solve different issues of delivery services, by guaranteeing less traffic congestion, less pollution, and lower operational costs. designing such type of delivery system based on autonomous robots requires the collaboration of different stakeholders, having different concerns: the store utilising the delivery service that is interested in costs and customer satisfaction, the municipality where the service is operated that is interested in the safety of the service, and the robotic company providing the service that is interested in all previous concerns. Our industrial partner from the robotic domain is designing this type of service in a smart town, and using a simulator for assessing different configurations providing different levels of performance. Since manually designing the configurations is time consuming for engineers, in this paper, we propose a search-based approach (All) that is able to explore the space of service configurations and find the optimal ones that show the tradeoff existing among the different concerns, so that stakeholders can make an informed decision. Since assessing one configuration requires to simulate the service multiple times over different types of customer requests, the approach suffers from scalability issues. Therefore, we propose two improvements of the approach that reduce the number of required simulations (IncrSim), and the duration of the simulation (IncrTime). Ex-periments on different settings show that IncrSim and IncrTime can find results as good as those of All in less time, and better than versions of All executed for the same budget.

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