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2020 (27)

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Book
Advances in Array Optimization
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Year: 2020 Publisher: London : IntechOpen,

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Abstract

The need to develop technology and communication necessitates the design of flexible and high-capacity radiating systems in today's communication infrastructure. In this context, antenna arrays are the ideal solution and have been one of the priority research subjects of the science community dealing with electromagnetics from past to present. Optimization of an array may be performed in various ways such as the optimization of excitation, reflector structure, feed network, etc. depending on the array structure. This book is a collection of seven research studies focused on the optimization of array structures in classical phased array or time modulation, including radiator, reflector, feed network, and radiating element optimizations.


Book
Advances in Array Optimization
Author:
Year: 2020 Publisher: London : IntechOpen,

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Abstract

The need to develop technology and communication necessitates the design of flexible and high-capacity radiating systems in today's communication infrastructure. In this context, antenna arrays are the ideal solution and have been one of the priority research subjects of the science community dealing with electromagnetics from past to present. Optimization of an array may be performed in various ways such as the optimization of excitation, reflector structure, feed network, etc. depending on the array structure. This book is a collection of seven research studies focused on the optimization of array structures in classical phased array or time modulation, including radiator, reflector, feed network, and radiating element optimizations.


Book
Advances in Array Optimization
Author:
Year: 2020 Publisher: London : IntechOpen,

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Abstract

The need to develop technology and communication necessitates the design of flexible and high-capacity radiating systems in today's communication infrastructure. In this context, antenna arrays are the ideal solution and have been one of the priority research subjects of the science community dealing with electromagnetics from past to present. Optimization of an array may be performed in various ways such as the optimization of excitation, reflector structure, feed network, etc. depending on the array structure. This book is a collection of seven research studies focused on the optimization of array structures in classical phased array or time modulation, including radiator, reflector, feed network, and radiating element optimizations.


Book
Advances in Array Optimization
Author:
ISBN: 1838801081 1838801073 Year: 2020 Publisher: [Place of publication not identified] : IntechOpen,


Book
Recent Technical Developments in Energy-Efficient 5G Mobile Cells
Author:
Year: 2020 Publisher: Basel, Switzerland MDPI - Multidisciplinary Digital Publishing Institute

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Abstract

This book addresses the true innovation in engineering design that may be promoted by blending together models and methodologies from different disciplines, and, in this book, the target was exactly to follow this approach to deliver a new disruptive architecture to deliver these next-generation mobile small cell technologies. According to this design philosophy, the work within this book resides in the intersection of engineering paradigms that includes “cooperation”, “network coding”, and “smart energy-aware frontends”. These technologies will not only be considered as individual building blocks, but re-engineered according to an inter-design approach resulting in the enabler for energy efficient femtocell-like services on the move. The book aims to narrow the gap between the current networking technologies and the foreseen requirements that are targeted at the future development of the 5G mobile and wireless communications networks in terms of the higher networking capacity, the ability to support more users, the lower cost per bit, the enhanced energy efficiency, and adaptability to new services and devices (for example, smart cities, and the Internet of things (IoT)).

Keywords

History of engineering & technology --- microstrip --- tuneable filter --- microwave filter --- 5G --- MEMSs --- varactor --- 4G --- CR --- MIMO --- reconfigurable antenna --- switch --- UWB --- WiMAX --- WLAN --- wireless communications --- cooperative NOMA --- multi-points DF relaying nodes --- half-duplex --- full-duplex --- Rayleigh fading channels --- Nakagami-m fading channels --- energy harvesting --- non-orthogonal multiple access --- multiple antenna --- transmit antenna selection --- outage probability --- pattern reconfigurable --- patch antenna --- s-parameters --- frequency reconfigurable --- dual-band Doherty power amplifier --- LTE-advanced --- high-efficiency --- phase offset lines --- impedance inverter network --- phase compensation network --- High power amplifiers --- high efficiency --- Doherty power amplifier --- GaN-HEMT --- small cell --- maximum transmit power --- UE --- open-loop power control --- interference --- ergodic capacity --- non-linear energy harvesting --- NOMA --- monopole antenna --- S-parameters --- 5G, 4/4.5G --- LTE --- ISM --- WiFi --- 5G antenna --- slot antenna --- mobile terminal antenna --- MIMO antenna --- medical applications --- miniaturized antenna --- arc-shaped --- dual-band --- chiral --- Tellegen --- multilayer CPW structure --- dispersion characteristics --- full-GEMT --- Muller’s method --- complex propagation constant --- acceleration procedure --- ISM 2.4 GHz --- isolation --- envelope correlation coefficient (ECC) --- channel capacity loss (CCL) --- 5G technology --- CPW-fed antenna --- diversity antenna --- future smartphones --- MIMO systems --- n/a --- Muller's method


Book
Recent Technical Developments in Energy-Efficient 5G Mobile Cells
Author:
Year: 2020 Publisher: Basel, Switzerland MDPI - Multidisciplinary Digital Publishing Institute

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Abstract

This book addresses the true innovation in engineering design that may be promoted by blending together models and methodologies from different disciplines, and, in this book, the target was exactly to follow this approach to deliver a new disruptive architecture to deliver these next-generation mobile small cell technologies. According to this design philosophy, the work within this book resides in the intersection of engineering paradigms that includes “cooperation”, “network coding”, and “smart energy-aware frontends”. These technologies will not only be considered as individual building blocks, but re-engineered according to an inter-design approach resulting in the enabler for energy efficient femtocell-like services on the move. The book aims to narrow the gap between the current networking technologies and the foreseen requirements that are targeted at the future development of the 5G mobile and wireless communications networks in terms of the higher networking capacity, the ability to support more users, the lower cost per bit, the enhanced energy efficiency, and adaptability to new services and devices (for example, smart cities, and the Internet of things (IoT)).

Keywords

microstrip --- tuneable filter --- microwave filter --- 5G --- MEMSs --- varactor --- 4G --- CR --- MIMO --- reconfigurable antenna --- switch --- UWB --- WiMAX --- WLAN --- wireless communications --- cooperative NOMA --- multi-points DF relaying nodes --- half-duplex --- full-duplex --- Rayleigh fading channels --- Nakagami-m fading channels --- energy harvesting --- non-orthogonal multiple access --- multiple antenna --- transmit antenna selection --- outage probability --- pattern reconfigurable --- patch antenna --- s-parameters --- frequency reconfigurable --- dual-band Doherty power amplifier --- LTE-advanced --- high-efficiency --- phase offset lines --- impedance inverter network --- phase compensation network --- High power amplifiers --- high efficiency --- Doherty power amplifier --- GaN-HEMT --- small cell --- maximum transmit power --- UE --- open-loop power control --- interference --- ergodic capacity --- non-linear energy harvesting --- NOMA --- monopole antenna --- S-parameters --- 5G, 4/4.5G --- LTE --- ISM --- WiFi --- 5G antenna --- slot antenna --- mobile terminal antenna --- MIMO antenna --- medical applications --- miniaturized antenna --- arc-shaped --- dual-band --- chiral --- Tellegen --- multilayer CPW structure --- dispersion characteristics --- full-GEMT --- Muller’s method --- complex propagation constant --- acceleration procedure --- ISM 2.4 GHz --- isolation --- envelope correlation coefficient (ECC) --- channel capacity loss (CCL) --- 5G technology --- CPW-fed antenna --- diversity antenna --- future smartphones --- MIMO systems --- n/a --- Muller's method


Book
Recent Technical Developments in Energy-Efficient 5G Mobile Cells
Author:
Year: 2020 Publisher: Basel, Switzerland MDPI - Multidisciplinary Digital Publishing Institute

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Bookmark

Abstract

This book addresses the true innovation in engineering design that may be promoted by blending together models and methodologies from different disciplines, and, in this book, the target was exactly to follow this approach to deliver a new disruptive architecture to deliver these next-generation mobile small cell technologies. According to this design philosophy, the work within this book resides in the intersection of engineering paradigms that includes “cooperation”, “network coding”, and “smart energy-aware frontends”. These technologies will not only be considered as individual building blocks, but re-engineered according to an inter-design approach resulting in the enabler for energy efficient femtocell-like services on the move. The book aims to narrow the gap between the current networking technologies and the foreseen requirements that are targeted at the future development of the 5G mobile and wireless communications networks in terms of the higher networking capacity, the ability to support more users, the lower cost per bit, the enhanced energy efficiency, and adaptability to new services and devices (for example, smart cities, and the Internet of things (IoT)).

Keywords

History of engineering & technology --- microstrip --- tuneable filter --- microwave filter --- 5G --- MEMSs --- varactor --- 4G --- CR --- MIMO --- reconfigurable antenna --- switch --- UWB --- WiMAX --- WLAN --- wireless communications --- cooperative NOMA --- multi-points DF relaying nodes --- half-duplex --- full-duplex --- Rayleigh fading channels --- Nakagami-m fading channels --- energy harvesting --- non-orthogonal multiple access --- multiple antenna --- transmit antenna selection --- outage probability --- pattern reconfigurable --- patch antenna --- s-parameters --- frequency reconfigurable --- dual-band Doherty power amplifier --- LTE-advanced --- high-efficiency --- phase offset lines --- impedance inverter network --- phase compensation network --- High power amplifiers --- high efficiency --- Doherty power amplifier --- GaN-HEMT --- small cell --- maximum transmit power --- UE --- open-loop power control --- interference --- ergodic capacity --- non-linear energy harvesting --- NOMA --- monopole antenna --- S-parameters --- 5G, 4/4.5G --- LTE --- ISM --- WiFi --- 5G antenna --- slot antenna --- mobile terminal antenna --- MIMO antenna --- medical applications --- miniaturized antenna --- arc-shaped --- dual-band --- chiral --- Tellegen --- multilayer CPW structure --- dispersion characteristics --- full-GEMT --- Muller's method --- complex propagation constant --- acceleration procedure --- ISM 2.4 GHz --- isolation --- envelope correlation coefficient (ECC) --- channel capacity loss (CCL) --- 5G technology --- CPW-fed antenna --- diversity antenna --- future smartphones --- MIMO systems


Book
Maxwell´s Equations : From Current Density Distribution to the Radiation Field of the Hertzian Dipole
Author:
ISBN: 3658293764 3658293756 Year: 2020 Publisher: Wiesbaden : Springer Fachmedien Wiesbaden : Imprint: Springer Vieweg,

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This book focuses on the derivation and solution of Maxwell’s equations. The stations along the way include the laws of potential and current density distribution, as well as the laws of electrostatics and stationary magnetic fields. The book is chiefly intended for students of electrical engineering, information technology, and physics; the goal is to prepare them for courses on Electromagnetic Field Theory (EFT). Building on what they have learned in advanced physics and mathematics courses at secondary school or technical college, it is intended to accompany university-level EFT courses. Particular importance is attached to detailed explanations in text form, combined with a wealth of illustrations. All formulas are derived step by step. . Contents • Potential and Current Density Distribution • Electrostatics • The Stationary Magnetic Field • Time-Varying Electric and Magnetic Fields • Wave Propagation • Appendix: Verification of the Calculation Rules for Vector Analysis Target groups Students of electrical engineering and information technology, as well as physics students About the author Prof. Jürgen Donnevert lectures and conducts research in the fields of transmission systems, optical communications engineering, radio relay technology and mobile communications. .


Book
ITG-Fb. 291: WSA 2020 : 24th International ITG Workshop on Smart Antennas February 18 – 20, 2020, Hamburg, Germany
Author:
ISBN: 3800752018 380075200X 1523140739 9781523140732 9783800752010 Year: 2020 Publisher: Berlin VDE Verlag

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Long description: The 24th International ITG Workshop on Smart Antennas (WSA 2020) will be hosted at Hamburg University of Technology (TUHH). It provides a prestigious international forum for the latest results on communication and information theory, related signal processing algorithms, and experimental results for wireless communications, with special focus on multiantenna (MIMO) systems. A non-exclusive list of topics of interest includes: • Beamforming Techniques • Massive/Full-Dimension MIMO • Network/Distributed MIMO • Multicell Systems and Interference • Cloud Radio Access Networks • Millimeter Wave and Terahertz Communications • Limited Feedback • Ultra-Low Latency Communication • Channel Modelling and Estimation • Compressive Sensing and Sparse Processing • Machine Learning for PHY/MAC Design • Multiantenna Techniques and Security • Field Trials and Demonstrators • MIMO Radar and Multisensor Processing • Cooperative and Sensor Networks • Device-to-Device Communications • Vehicular Communications • Uncoordinated and Massive Access • Localization


Book
Development of 15 micron cutoff wavelength HgCdTe detector arrays for astronomy
Author:
ISBN: 3030542416 3030542408 Year: 2020 Publisher: Springer International Publishing

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This thesis describes advances in the understanding of HgCdTe detectors. While long wave (15 μm) infrared detectors HgCdTe detectors have been developed for military use under high background irradiance, these arrays had not previously been developed for astronomical use where the background irradiance is a billion times smaller. The main pitfall in developing such arrays for astronomy is the pixel dark current which plagues long wave HgCdTe. The author details work on the success of shorter wavelength development at Teledyne Imaging Sensors, carefully modeling the dark current–reverse bias voltage curves of their 10 μm devices at a temperature of 30K, as well as the dark current–temperature curves at several reverse biases, including 250 mV. By projecting first to 13 and then 15 μm HgCdTe growth, values of fundamental properties of the material that would minimize tunneling dark currents were determined through careful modeling of the dark current-reverse bias voltage curves, as well as the dark current-temperature curves. This analysis was borne out in the 13 μm parts produced by Teledyne, and then further honed to produce the necessary parameters for the 15 μm growth. The resulting 13 μm arrays are being considered by a number of ground-based astronomy research groups.

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