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| Author | : Jagannath Malik |
| Publisher | : Springer |
| Total Pages | : 103 |
| Release | : 2017-08-01 |
| Genre | : Technology & Engineering |
| ISBN | : 3319631756 |
Download Compact Antennas for High Data Rate Communication Book in PDF, ePub and Kindle
This book discusses the development of promising technologies for compact antennas for high data-rate communications. It discusses and analyzes the design of compact ultra-wideband (UWB) and multiple input, multiple output (MIMO) antennas, providing essential know-how for designers, practicing engineers and scientists. These wireless communication technologies enable consumers to have convenient access to a wide range of services – anytime, anywhere. And the introduction of wireless mobile access points eliminates the limitations to communication imposed by geographical location. The Internet has allowed people to access and share information much more rapidly, but in order to achieve higher data rates with the limited available resources and imposed constraints, wireless communication technology needs to be pushed beyond the physical limits of the propagation channel. This book contributes to achieving this goal.
| Author | : Chandana K. K. Jayasooriya |
| Publisher | : |
| Total Pages | : 107 |
| Release | : 2013 |
| Genre | : Electronic dissertations |
| ISBN | : |
Download Compact Antennas for Mimo Communications Book in PDF, ePub and Kindle
The newest cellular communication standard, 4G-LTE (Long Term Evolution) provides an all internet protocol (IP)-based solutions to the high data rate required of mobile communication applications. It offers 100 Mbit/s and 1 Gbit/s for low mobility and high mobility applications, respectively. These high data rates are possible mainly due to the use of multiple antennas at both ends of the communication system. Therefore, antenna design for this new cellular standard is of high interest. Due to the size limitations of a hand-held device (typically, 120 mm x 65 mm x 5 mm (L x W x H)) designing antennas has become more challenging. Minimal antenna size, mutual coupling between different antennas, and compliance with radiation restrictions are some of the challenges that influence the design of antennas for this new standard. This work focuses on designing compact antennas to be used in mobile handsets as well as wireless routers such as in the IEEE 802.11n standard. The first attempt was to design a two-port co-located circular patch antenna (CPA) and an annular ring antenna (ARA) that utilizes pattern diversity. The idea behind pattern diversity is to generate two orthogonal radiation patterns associated with each port. To reduce the size of the antenna, ferrite material is used as the substrate material. Even though the use of ferrite material leads to a significant size reduction, the dimensions of those antennas are too large to fit in a cellular mobile handset. Therefore, a spatially separated half-cycle meander structure was investigated. This antenna was designed to fit into a mobile handset using FEKO simulations, and then fabricated and tested. By using the simulated S-parameters and radiation patterns, all of these antennas were investigated for communication theoretic performance parameters such as bit error rate (BER) and capacity.
| Author | : Leeladhar Malviya |
| Publisher | : CRC Press |
| Total Pages | : 220 |
| Release | : 2020-12-15 |
| Genre | : Technology & Engineering |
| ISBN | : 1000294951 |
Download MIMO Antennas for Wireless Communication Book in PDF, ePub and Kindle
The desired objective of this book is to investigate diversity and mutual coupling effects on MIMO antenna designs for WLAN/WiMAX/LTE applications, controlled with diversity and ground modification techniques including equivalent circuit diagrams. Diversity techniques in MIMO antennas leading to the performance improvement ratings are demonstrated and deliberated. The book contributes towards the development of 2:1 VSWR MIMO antennas with diversity techniques for indoor/outdoor applications for high data rate, QOS, and SNR. The improved MIMO antenna structures are investigated and presented in this book including part of massive MIMO to provide the important aspects of emerging technology. Aimed at researchers, professionals and graduate students in electrical engineering, electromagnetics, communications and signal processing including antenna theory and design, smart antennas, communication systems, this book: Investigates real time MIMO antenna designs for WLAN/WiMAX/LTE applications. Covers effects of ECC, MEG, TARC, and equivalent circuit. Addresses the coupling and diversity aspects of antenna design problem for MIMO systems. Focus on the MIMO antenna designs for the real time applications. Exclusive chapter on 5G Massive MIMO along with case studies throughout the book.
| Author | : Satish K. Sharma |
| Publisher | : John Wiley & Sons |
| Total Pages | : 466 |
| Release | : 2021-05-04 |
| Genre | : Technology & Engineering |
| ISBN | : 1119535050 |
Download Multifunctional Antennas and Arrays for Wireless Communication Systems Book in PDF, ePub and Kindle
MULTIFUNCTIONAL ANTENNAS AND ARRAYS FOR WIRELESS COMMUNICATION SYSTEMS Offers an up-to-date discussion of multifunctional antennas and arrays for wireless communication systems Multifunctional Antennas and Arrays for Wireless Communication Systems is a comprehensive reference on state-of-the-art reconfigurable antennas and 4G/5G communication antennas. The book gives a unique perspective while giving a comprehensive overview of the following topics: Frequency reconfigurable antennas Pattern reconfigurable antennas Polarization reconfigurable antennas Reconfigurable antennas using Liquid Metal, Piezoelectric, and RF MEMS MIMO and 4G/5G wireless communication antennas Metamaterials and metasurfaces in reconfigurable antennas Multifunctional antennas for user equipments (UEs) Defense related antennas and applications Flat panel phased array antennas The book is a valuable resource for the practicing engineer as well as for those within the research field. As wireless communications continuously evolves, more and more functionally will be required, and thus multifunctional antennas and RF systems will be necessary. These multifunctional antennas will require a degree of reconfigurability, and this book discusses various methods which enable this. The main topics of frequency, pattern, and polarization reconfigurability is first discussed. Methods utilizing unique materials and devices, both real and artificial are discussed. The book also delves into 4G/5G antennas as it relates to MIMO, and millimeter-wave phased arrays. Finally, there is a section on defense related multifunctional RF antenna systems.
| Author | : Prashant Ranjan |
| Publisher | : John Wiley & Sons |
| Total Pages | : 306 |
| Release | : 2021-07-19 |
| Genre | : Technology & Engineering |
| ISBN | : 1119792746 |
Download Next-Generation Antennas Book in PDF, ePub and Kindle
NEXT-GENERATION ANTENNAS: ADVANCES AND CHALLENGES The first book in this exciting new series, written and edited by a group of international experts in the field, this exciting new volume covers the latest advances and challenges in the next generation of antennas. Antenna design and wireless communication has recently witnessed their fastest growth period ever in history, and these trends are likely to continue for the foreseeable future. Due to recent advances in industrial applications as well as antenna, wireless communication, and 5G technology, we are witnessing a variety of developing and expanding new technologies. Compact and low-cost antennas are increasing the demand for ultra-wide bandwidth in next-generation (5G) wireless communication systems and the Internet of Things (IoT). Enabling the next generation of high-frequency communication, various methods have been introduced to achieve reliable high data rate communication links and enhance the directivity of planar antennas. 5G technology can be used in many applications, such as in smart city applications and in smartphones. This technology can satisfy the fast rise in user and traffic capacity in mobile broadband communications. Therefore, different planar antennas with intelligent beamforming capability play an important role in these areas. The purpose of this book is to present the advanced technology, developments, and challenges in antennas for next-generation antenna communication systems. This book covers advances in next-generation antenna design and application domain in all related areas. It is a detailed overview of cutting-edge developments and other emerging topics and their applications in all areas of engineering that have achieved great accuracy and performance with the help of the advancement and challenges in next-generation antennas. This outstanding new volume: Covers all the latest developments and future aspects of antenna communication Is concisely written, lucid, and comprehensive, practical application-based, with many informative graphics and schematics Will help students, researchers, as well as systems designers to understand fundamental antenna design and wireless communication Compares different approaches in antenna design
| Author | : Laure Huitema |
| Publisher | : BoD – Books on Demand |
| Total Pages | : 216 |
| Release | : 2014-09-10 |
| Genre | : Technology & Engineering |
| ISBN | : 9535117238 |
Download Progress in Compact Antennas Book in PDF, ePub and Kindle
Compact antennas are a subject of growing interest from industry and scientific community to equip wireless communicating objects. The need for high performance small antennas and RF front ends is the challenge for future and next generation mobile devices. This book brings the body of knowledge on compact antennas into a single comprehensive volume. It is designed to meet the needs of electrical engineering and physics students to the senior undergraduate and beginning graduate levels, and those of practicing engineers.
| Author | : Balamati Choudhury |
| Publisher | : Springer |
| Total Pages | : 68 |
| Release | : 2015-09-23 |
| Genre | : Technology & Engineering |
| ISBN | : 9812878025 |
Download PBG based Terahertz Antenna for Aerospace Applications Book in PDF, ePub and Kindle
This book focuses on high-gain antennas in the terahertz spectrum and their optimization. The terahertz spectrum is an unallocated EM spectrum, which is being explored for a number of applications, especially to meet increasing demands of high data rates for wireless space communications. Space communication systems using the terahertz spectrum can resolve the problems of limited bandwidth of present wireless communications without radio-frequency interference. This book describes design of such high-gain antennas and their performance enhancement using photonic band gap (PBG) substrates. Further, optimization of antenna models using evolutionary algorithm based computational engine has been included. The optimized high-performance compact antenna may be used for various wireless applications, such as inter-orbital communications and on-vehicle satellite communications.
| Author | : Shiban Kishen Koul |
| Publisher | : Springer Nature |
| Total Pages | : 336 |
| Release | : 2021-09-18 |
| Genre | : Technology & Engineering |
| ISBN | : 9811639736 |
Download Wearable Antennas and Body Centric Communication Book in PDF, ePub and Kindle
This book presents state-of-the-art technologies, trends and applications with a focus on the healthcare domain for ultra-wideband (3.1–10.6 GHz) and 60 GHz (57–66 GHz) wireless communication systems. Due to various key features such as miniaturized antenna design, low power, high data rate, less effects on the human body, relatively less crowded spectrum, these technologies are becoming popular in various fields of biomedical applications and day-to-day life. The book highlights various aspects of these technologies related to body-centric communication, including antenna design requirements, channel modeling and characterization for WBANs, current fabrication and antenna design strategies for textile, flexible and implanted antennas. Apart from the general requirements and study related to these frequency bands, various application specific topics such as localization and tracking, physical activity recognition and assessment, vital sign monitoring and medical imaging are covered in detail. The book concludes with the glimpses of future aspects of the UWB and 60 GHz technology which includes IoT for healthcare and smart living, novel antenna materials and application of machine learning algorithms for overall performance enhancement.
| Author | : Kasra Ghaemi |
| Publisher | : |
| Total Pages | : 160 |
| Release | : 2017 |
| Genre | : |
| ISBN | : |
Download Low-profile, Compact and Broadband Antennas for HF, VHF, and UHF Applications Book in PDF, ePub and Kindle
This dissertation investigates the challenges in designing low-profile, compact and broadband antennas for HF, VHF, UHF applications and presents novel antenna solutions to address them. This thesis focuses on three major HF-UHF applications and proposes antenna solutions for them. The first application is ultra-wideband (UWB) antenna design for HF-UHF applications. This is mainly useful in military systems where the antenna should demonstrate monopole-like radiation characteristics and should be as small as possible specially having a low-profile antenna design is highly desired. The second part of the thesis focuses on applications where low-profile and compact antennas with directional radiation patterns are required. This application requires wide bandwidths to enable relatively high data rate and long-range communications, wideband jamming purposes, and to reduce the co-site interference between multiple antennas operating on frequency bands located near each other. The third application that this dissertation focuses on is small-aperture direction-finding (DF) systems for HF-UHF applications. The limited size of the antenna aperture inversely impacts the accuracy of the DF system and limits its bandwidth of operation. A novel broadband antenna solution is introduced to address such challenges. Finally, a possible future work that this thesis can be extended to further address the issue of size-performance tradeoff in antenna design for HF-UHF applications.
| Author | : Shiban Kishen Koul |
| Publisher | : Springer Nature |
| Total Pages | : 213 |
| Release | : 2022-10-14 |
| Genre | : Technology & Engineering |
| ISBN | : 9811965374 |
Download Reconfigurable Active and Passive Planar Antennas for Wireless Communication Systems Book in PDF, ePub and Kindle
This book presents state-of-the-art trends in reconfigurable active and passive planar antennas and their applications in wireless communication systems operating in the frequency band 5-6 GHz. Due to various key features such as multifunction antenna design, compactness, planar nature, and low cost, these technologies are becoming popular for current and future wireless applications. This book discusses different novel antenna designs and their working principles in detail. The modern and future wireless systems require wideband antennas to accommodate various channels in a single band or in separate bands. The carrier aggregation (CA) has been introduced in the modern wireless systems such as LTE-advanced systems and 5G./6G. In CA, a device can use several channels for transmission and reception. The used channels can exist in the same frequency band (intra-band CA) or in distinct bands (inter-band CA). To accommodate more channels, more bandwidth is required within the operating band. For portable devices, circularly polarized (CP) antennas are more advantageous over linearly polarized antennas since in CP antennas, there is low risk of misalignment and, hence encountering interference. Circularly polarized antenna also provides higher link reliability for the portable devices. To provide high data rates, more bandwidth is needed to accommodate more channels. Various multifunction, compact, and wideband antennas for plethora of applications are addressed in detail in this book. The scope of developing reconfigurable active antennas for application in beam switching, beam steering, wireless charging, security systems, etc., is described. This book concludes by giving glimpses of antenna requirements for future wireless communication systems.
