Miniaturization of Microstrip and Cpw-fed Uwb Printed Antennas with Band Rejection Characteristics PDF Download
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Author: Wessam Zayd Shareef
Publisher:
ISBN:
Category :
Languages : en
Pages : 220
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Book Description
The tremendous developments over the recent years in wireless communications applications led to the urgent need for the innovation of new technologies capable of vast data transfer rates at very low power consumption levels. Such technologies also require large portions of the frequency spectrum. Ultra wideband (UWB) technology is being considered as a solution to address these issues. This technology attracted high attention especially after the allocation of 7.5 GHz spectrum bandwidth between 3.1 GHz and 10.6 GHz for the UWB civil applications by the Federal communication Commission (FCC). As is the case in conventional wireless communication systems, an antenna plays a significant role in achieving successful transmission and reception of information in the form of data packets using UWB systems. This thesis presents two new designs of notched band Ultra-Wideband printed antennas using microstrip and coplanar waveguide-fed configurations. Simple techniques of perforation the substrate and modifying the ground planes and radiator patches are used to achieve ultra wideband for the designed antennas with small structure. Narrow Arch-shaped slot was introduced to the patch of the proposed antennas to obtain the band rejection function around the 5.4 GHz frequency to avoid the interference with WLAN standards like IEEE 802.11a and HIPERLAN/2 Both UWB antennas were developed and analyzed by a 3D electromagnetic simulator. To confirm the simulation results, the two proposed antennas were fabricated on FR-4 substrate with dielectric constant of 4.4 and the experimental measurements were carried out using a network vector network analyzer (Anritsu 37347D). The analysis indicated a fairly good agreement between simulation and measurement. The measured bandwidth of the proposed microstrip-fed UWB antenna is ranging from 2.62 GHz up to 12.7 GHz with a return loss no more than -10 dB excluding a notched frequency starting from 5.1 GHz to 6 GHz. The overall size of the antenna is 20 × 21 × 1.6 mm3 The Measurement results of the proposed cpw-fed UWB antenna showed that this antenna has operational bandwidth starting from 2.45 GHz to 10.9 GHz with return loss better than -10 dB excluding the notched band from 4.83 GHz to 5.97 GHz. The antenna features the same compact size of the microstrip antenna (20 × 21 × 1.6 mm3). In the addition to the required UWB bandwidth, both designed antennas are exhibit high radiation efficiency, stable group delay and omni-directional pattern which makes them suitable for UWB portable wireless devices with their compact size feature.
Author: Wessam Zayd Shareef
Publisher:
ISBN:
Category :
Languages : en
Pages : 220
Get Book Here
Book Description
The tremendous developments over the recent years in wireless communications applications led to the urgent need for the innovation of new technologies capable of vast data transfer rates at very low power consumption levels. Such technologies also require large portions of the frequency spectrum. Ultra wideband (UWB) technology is being considered as a solution to address these issues. This technology attracted high attention especially after the allocation of 7.5 GHz spectrum bandwidth between 3.1 GHz and 10.6 GHz for the UWB civil applications by the Federal communication Commission (FCC). As is the case in conventional wireless communication systems, an antenna plays a significant role in achieving successful transmission and reception of information in the form of data packets using UWB systems. This thesis presents two new designs of notched band Ultra-Wideband printed antennas using microstrip and coplanar waveguide-fed configurations. Simple techniques of perforation the substrate and modifying the ground planes and radiator patches are used to achieve ultra wideband for the designed antennas with small structure. Narrow Arch-shaped slot was introduced to the patch of the proposed antennas to obtain the band rejection function around the 5.4 GHz frequency to avoid the interference with WLAN standards like IEEE 802.11a and HIPERLAN/2 Both UWB antennas were developed and analyzed by a 3D electromagnetic simulator. To confirm the simulation results, the two proposed antennas were fabricated on FR-4 substrate with dielectric constant of 4.4 and the experimental measurements were carried out using a network vector network analyzer (Anritsu 37347D). The analysis indicated a fairly good agreement between simulation and measurement. The measured bandwidth of the proposed microstrip-fed UWB antenna is ranging from 2.62 GHz up to 12.7 GHz with a return loss no more than -10 dB excluding a notched frequency starting from 5.1 GHz to 6 GHz. The overall size of the antenna is 20 × 21 × 1.6 mm3 The Measurement results of the proposed cpw-fed UWB antenna showed that this antenna has operational bandwidth starting from 2.45 GHz to 10.9 GHz with return loss better than -10 dB excluding the notched band from 4.83 GHz to 5.97 GHz. The antenna features the same compact size of the microstrip antenna (20 × 21 × 1.6 mm3). In the addition to the required UWB bandwidth, both designed antennas are exhibit high radiation efficiency, stable group delay and omni-directional pattern which makes them suitable for UWB portable wireless devices with their compact size feature.
Author: Praveen Kumar Malik
Publisher: CRC Press
ISBN: 1000801128
Category : Technology & Engineering
Languages : en
Pages : 378
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Book Description
This collection covers different printed microstrip antenna designs,from rectangular to circular, broadband, dual-band, and millimeter-wave microstrip antennas to microstrip arrays. It further presents a new analysis of the rectangular and circular microstrip antenna efficiency and surface wave phenomena. The book Covers the latest advances and applications of microstrip antennas Discusses methods and techniques used for the enhancement of the performance parameters of the microstrip antenna Presents low-power wide area network (LPWAN) proximity-coupled antenna for Internet of Things applications. Highlights a new analysis of rectangular and circular microstrip antenna efficiency and surface wave phenomena. Showcases implantable antennas, H-shaped antennas, and wideband implantable antennas for biomedical applications Printed Antennas discusses the latest advances such as the Internet of Things for antenna applications, device-to-device communication, satellite communication, and wearable textile antenna in the field of communication. It further presents methods and techniques used for the enhancement of the performance parameters of the microstrip antenna and covers the design of conformal and miniaturized antenna structures for various applications. It will serve as an ideal reference text for senior undergraduates, graduate students, and researchers in fields including electrical engineering, electronics and communications engineering, and computer engineering.
Author: Woo Chan Kim
Publisher:
ISBN: 9789533074528
Category :
Languages : en
Pages :
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Book Description
Author: Ahmed Kishk
Publisher: BoD – Books on Demand
ISBN: 9535110195
Category : Technology & Engineering
Languages : en
Pages : 398
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Book Description
The book discusses basic and advanced concepts of microstrip antennas, including design procedure and recent applications. Book topics include discussion of arrays, spectral domain, high Tc superconducting microstrip antennas, optimization, multiband, dual and circular polarization, microstrip to waveguide transitions, and improving bandwidth and resonance frequency. Antenna synthesis, materials, microstrip circuits, spectral domain, waveform evaluation, aperture coupled antenna geometry and miniaturization are further book topics. Planar UWB antennas are widely covered and new dual polarized UWB antennas are newly introduced. Design of UWB antennas with single or multi notch bands are also considered. Recent applications such as, cognitive radio, reconfigurable antennas, wearable antennas, and flexible antennas are presented. The book audience will be comprised of electrical and computer engineers and other scientists well versed in microstrip antenna technology.
Author: Debatosh Guha
Publisher: John Wiley & Sons
ISBN: 1119972981
Category : Technology & Engineering
Languages : en
Pages : 512
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Book Description
This book focuses on new techniques, analysis, applications and future trends of microstrip and printed antenna technologies, with particular emphasis to recent advances from the last decade Attention is given to fundamental concepts and techniques, their practical applications and the future scope of developments. Several topics, essayed as individual chapters include reconfigurable antenna, ultra-wideband (UWB) antenna, reflectarrays, antennas for RFID systems and also those for body area networks. Also included are antennas using metamaterials and defected ground structures (DGSs). Essential aspects including advanced design, analysis and optimization techniques based on the recent developments have also been addressed. Key Features: Addresses emerging hot topics of research and applications in microstrip and printed antennas Considers the fundamental concepts, techniques, applications and future scope of such technologies Discusses modern applications such as wireless base station to mobile handset, satellite earth station to airborne communication systems, radio frequency identification (RFID) to body area networks, etc. Contributions from highly regarded experts and pioneers from the US, Europe and Asia This book provides a reference for R&D researchers, professors, practicing engineers, and scientists working in these fields. Graduate students studying/working on related subjects will find this book as a comprehensive literature for understanding the present and future trends in microstrip and printed antennas.
Author: Tayeb A. Denidni
Publisher: Artech House
ISBN: 1608077152
Category : Technology & Engineering
Languages : en
Pages : 211
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Book Description
This book presents ultrawideband antennas and their applications on microwave imaging. The chapters focus on recent techniques, analysis, and applications along with the future vision of this emerging field of applied electromagnetics. Several emerging topics are essayed, including dielectric resonator antennas and planar ultrawideband antennas for microwave imaging. This resource incorporates modern design concepts, analysis, and optimization techniques based on recent developments. Readers are also provided with an extensive overview of current regulations, including those related to microwave effects in biological tissues.
Author: Balaka Biswas
Publisher: CRC Press
ISBN: 1000877051
Category : Technology & Engineering
Languages : en
Pages : 274
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Book Description
This proposed book focuses on the design and development of printed antennas along with modeling aspects for multifaceted applications. It further investigates imperfections in the manufacturing processes and assembly operation during the testing/characterization of printed antennas. This text- Discusses in a comprehensive manner the design and development aspects of printed antennas. Provides fractal engineering aspects for miniaturization and wideband characteristics of the low-profile antenna with high performances. Covers high gain printed antenna for Terahertz application. Showcases electrical modeling of smart antennas. Pedagogical features such as review questions based on practical experiences are included at the end of each chapter. The book comprehensively discusses fractal engineering in printed antennas for miniaturization and enhancement of performance factors. It further covers the modeling of electrically small antennas, circuit modeling, modeling of factual-based Ultra-Wide Band antennas, and modeling of reconfigurable micro-electromechanical system-based patch antennas. The book highlights performance metrics of multiple-input-multiple-output antennas. It will serve as an ideal reference text for senior undergraduate, graduate students, and academic researchers in fields including electrical engineering, electronics, communications engineering, and computer engineering.
Author: Lakhmi C. Jain
Publisher: Springer
ISBN: 8132220099
Category : Technology & Engineering
Languages : en
Pages : 525
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Book Description
In the history of mankind, three revolutions which impact the human life are the tool-making revolution, agricultural revolution and industrial revolution. They have transformed not only the economy and civilization but the overall development of the society. Probably, intelligence revolution is the next revolution, which the society will perceive in the next 10 years. ICCD-2014 covers all dimensions of intelligent sciences, i.e. Intelligent Computing, Intelligent Communication and Intelligent Devices. This volume covers contributions from Intelligent Communication which are from the areas such as Communications and Wireless Ad Hoc & Sensor Networks, Speech & Natural Language Processing, including Signal, Image and Video Processing and Mobile broadband and Optical networks, which are the key to the ground-breaking inventions to intelligent communication technologies. Secondly, Intelligent Device is any type of equipment, instrument or machine that has its own computing capability. Contributions from the areas such as Embedded Systems, RFID, RF MEMS, VLSI Design & Electronic Devices, Analog and Mixed-Signal IC Design and Testing, MEMS and Microsystems, CMOS MEMS, Solar Cells and Photonics, Nano Devices, Single Electron & Spintronics Devices, Space Electronics and Intelligent Robotics are covered in this volume.
Author: Youssef Tawk
Publisher: Artech House
ISBN: 1630813699
Category : Technology & Engineering
Languages : en
Pages : 289
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Book Description
This one-of-a-kind new resource presents cognitive radio from an antenna design perspective and introduces the concept of cognitive radio as a protocol that benefits from under-utilized regions of the spectrum. This book covers topics that govern the operation of a cognitive radio and discusses the use of reconfigurable antennas, reconfigurable filtennas, and MIMO antennas for cognitive radio. The analysis and design of different antenna systems are presented, compared and evaluated. New approaches to improve spectrum efficiency are explored by demonstrating how to design software controlled cognitive radio antenna systems. This new resource shows how to communicate using either interweave or underlay cognitive radio and demonstrates the benefits of designing appropriate sensing and communicating antennas. The first part of the book introduces the basic concept of cognitive radio and discusses the difference between cognitive radio and software defined radio from the RF system 's perspective. The second part of the book discusses the main antenna design requirements, procedures and challenges for cognitive radio. The third part of the book introduces new trends in cognitive radio implementation such as the implementation of MIMO antennas on cognitive radio, the use of machine learning techniques to optimize the performance of a cognitive radio environment, and the implementation of cognitive radar and cognitive radio in space.
Author: Mohammad Abdul Matin
Publisher: BoD – Books on Demand
ISBN: 9533074523
Category : Computers
Languages : en
Pages : 400
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Book Description
This book explores both the state-of-the-art and the latest achievements in UWB antennas and propagation. It has taken a theoretical and experimental approach to some extent, which is more useful to the reader. The book highlights the unique design issues which put the reader in good pace to be able to understand more advanced research.
