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Author:
Publisher: Walter de Gruyter GmbH & Co KG
ISBN: 3110562804
Category : Science
Languages : en
Pages : 353
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Book Description
The book presents basic and advanced concepts of circularly polarized antennas, including design procedure and recent applications. Cross dipole antennas, microstrip antennas, helical antennas, quadrifilar helix antennas, frequency independent antennas, horn antennas, omnidirectional circularly polarized antennas and radial line arry antennas are discussed. With abundant examples, the book is an essential reference for researchers and engineers.
Author:
Publisher: Walter de Gruyter GmbH & Co KG
ISBN: 3110562804
Category : Science
Languages : en
Pages : 353
Get Book Here
Book Description
The book presents basic and advanced concepts of circularly polarized antennas, including design procedure and recent applications. Cross dipole antennas, microstrip antennas, helical antennas, quadrifilar helix antennas, frequency independent antennas, horn antennas, omnidirectional circularly polarized antennas and radial line arry antennas are discussed. With abundant examples, the book is an essential reference for researchers and engineers.
Author: Steven Shichang Gao
Publisher: John Wiley & Sons
ISBN: 111837441X
Category : Technology & Engineering
Languages : en
Pages : 341
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Book Description
This book presents a comprehensive insight into the design techniques for different types of CP antenna elements and arrays In this book, the authors address a broad range of topics on circularly polarized (CP) antennas. Firstly, it introduces to the reader basic principles, design techniques and characteristics of various types of CP antennas, such as CP patch antennas, CP helix antennas, quadrifilar helix antennas (QHA), printed quadrifilar helix antennas (PQHA), spiral antenna, CP slot antennas, CP dielectric resonator antennas, loop antennas, crossed dipoles, monopoles and CP horns. Advanced designs such as small-size CP antennas, broadband, wideband and ultra-wideband CP antennas are also discussed, as well as multi-band CP antennas and dual CP antennas. The design and analysis of different types of CP array antennas such as broadband CP patch arrays, dual-band CP arrays, CP printed slot arrays, single-band and multi-band CP reflectarrays, high-gain CP waveguide slot antennas, CP dielectric resonator antenna arrays, CP active arrays, millimetre-waveband CP arrays in LTCC, and CP arrays with electronically beam-switching or beam-steering capabilities are described in detail. Case studies are provided to illustrate the design and implementation of CP antennas in practical scenarios such as dual-band Global Navigation Satellite Systems (GNSS) receivers, satellite communication mobile terminals at the S-band, Radio Frequency Identification (RFID) readers at 2.4 GHz, and Ka-band high-speed satellite communication applications. It also includes the detailed designs for a wideband Logarithmic spiral antenna that can operate from 3.4-7.7 GHz. In addition, the book offers a detailed review of the recent developments of different types of CP antennas and arrays. Presents comprehensive discussions of design techniques for different types of CP antennas: small-size CP antennas, broadband CP antennas, multi-band CP antennas and CP arrays. Covers a wide range of antenna technologies such as microstrip antennas, helix, quadrifilar helix antenna, printed quadrifilar helix antenna, dielectric resonator antennas, printed slots, spiral antennas, monopoles, waveguide slot arrays, reflectarrays, active arrays, millimetre-wave arrays in LTCC, electronically beam-switching arrays and electronically beam-steerable arrays. Reviews recent developments in different types of CP antennas and arrays, reported by industries, researchers and academics worldwide. Includes numerous case studies to demonstrate how to design and implement different CP antennas in practical scenarios. Provides both an introduction for students in the field and an in-depth reference for antenna/RF engineers who work on the development of CP antennas. Circularly Polarized Antennas will be an invaluable guide for researchers in R&D organizations; system engineers (antenna, telecom, space and satellite); postgraduates studying the subjects of antenna and propagation, electromagnetics, RF/microwave/millimetre-wave systems, satellite communications and so on; technical managers and professionals in the areas of antennas and propagation.
Author: Raghvendra Kumar Chaudhary
Publisher: Artech House
ISBN: 1630818186
Category : Technology & Engineering
Languages : en
Pages : 310
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Book Description
This book introduces 5 key feeding techniques such as coaxial probe, microstrip, conformal strip, aperture, and coplanar waveguide and covers different shapes of dielectric resonator antennas leading to improvement in circularly polarized (CP) performance. It introduces advancements in the field of dielectric resonator antennas and dilectric resonator antennas (DRAs). Five different types of feeding techniques (i.e. coaxial probe, microstrip, conformal strip, aperture, and coplanar waveguide) are described for obtaining CP followed by two modified shaped DRA (sector DRAs). Throughout this book, rectangular and circular with their modified shapes of the dielectric resonator are utilized, providing differing degrees of freedom as well as different variable parameters, including length, width, height, radius, aspect ratio and dielectric constant, which are tuned to obtain the desired antenna parameters.
Author:
Publisher: Walter de Gruyter GmbH & Co KG
ISBN: 3110561565
Category : Technology & Engineering
Languages : en
Pages : 494
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Book Description
The book presents basic and advanced concepts of circularly polarized antennas, including design procedure and recent applications. Cross dipole antennas, microstrip antennas, helical antennas, quadrifilar helix antennas, frequency independent antennas, horn antennas, omnidirectional circularly polarized antennas and radial line arry antennas are discussed. With abundant examples, the book is an essential reference for researchers and engineers.
Author: William A. Imbriale
Publisher: John Wiley & Sons
ISBN: 1119993199
Category : Technology & Engineering
Languages : en
Pages : 772
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Book Description
This book addresses a broad range of topics on antennas for space applications. First, it introduces the fundamental methodologies of space antenna design, modelling and analysis as well as the state-of-the-art and anticipated future technological developments. Each of the topics discussed are specialized and contextualized to the space sector. Furthermore, case studies are also provided to demonstrate the design and implementation of antennas in actual applications. Second, the authors present a detailed review of antenna designs for some popular applications such as satellite communications, space-borne synthetic aperture radar (SAR), Global Navigation Satellite Systems (GNSS) receivers, science instruments, radio astronomy, small satellites, and deep-space applications. Finally it presents the reader with a comprehensive path from space antenna development basics to specific individual applications. Key Features: Presents a detailed review of antenna designs for applications such as satellite communications, space-borne SAR, GNSS receivers, science instruments, small satellites, radio astronomy, deep-space applications Addresses the space antenna development from different angles, including electromagnetic, thermal and mechanical design strategies required for space qualification Includes numerous case studies to demonstrate how to design and implement antennas in practical scenarios Offers both an introduction for students in the field and an in-depth reference for antenna engineers who develop space antennas This book serves as an excellent reference for researchers, professionals and graduate students in the fields of antennas and propagation, electromagnetics, RF/microwave/millimetrewave systems, satellite communications, radars, satellite remote sensing, satellite navigation and spacecraft system engineering, It also aids engineers technical managers and professionals working on antenna and RF designs. Marketing and business people in satellites, wireless, and electronics area who want to acquire a basic understanding of the technology will also find this book of interest.
Author: Manish Tiwari
Publisher: Springer Nature
ISBN: 9811628181
Category : Technology & Engineering
Languages : en
Pages : 593
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Book Description
This book comprises select proceedings of the 4th International Conference on Optical and Wireless Technologies (OWT 2020). The contents of this volume focus on research carried out in the areas of Optical Communication, Optoelectronics, Optics, Wireless Communication, Wireless Networks, Sensors, Mobile Communications and Antenna and Wave Propagation. The volume also explores the combined use of various optical and wireless technologies in next generation applications, and their latest developments in applications like photonics, high speed communication systems and networks, visible light communication, nanophotonics, wireless and MIMO systems. This book will serve as a useful reference to scientists, academicians, engineers and policy-makers interested in the field of optical and wireless technologies.
Author: IEEE Staff
Publisher:
ISBN: 9781665447836
Category :
Languages : en
Pages :
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Book Description
ANTEM is a premier event in antennas and applied electromagnetics It provides an ideal forum and venue for networking, exchanging ideas, and identifying future trends and developments The technical sessions will be host to a well balanced, comprehensive program with topics in antennas, propagation, and electromagnetics Following tradition, the symposium will have both oral and poster sessions Additionally, there will be distinguished lecturers and special sessions with contemporary topics at the leading edge of antenna and electromagnetics technology
Author: A. E. Abdulhadi
Publisher:
ISBN:
Category :
Languages : en
Pages : 0
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Book Description
A novel design of a circular microstrip antenna with an additional small circular patch excited by a single feed for achieving a dual band frequency operation with circular polarization (CP) is presented. The implemented dual band circularly polarized antenna has a compact configuration that serves the technology demands requirements in mobile unit systems for smaller volume. Simulation and experimental results show that the 10 dB return-loss impedance bandwidth is better than that of a conventional single circular microstrip patch antenna. In addition, a dual frequency band operation at 2.45 GHZ and 5.2GHZ is obtained. A second antenna design suitable for an integrated circuits demand is also presented. Results demonstrate that both sense left hand and right hand circular polarization (RHCP, LHCP) can be achieved using this technique. A comparison between theoretical and experimental results is provided and shows good match. The resonance frequencies and quality of the axial ratio can be controlled by changing the radii of the two circles, and the orientation of the additional circular patch relative to the main patch. For other desired frequencies, the design of the antenna can be carried out by calculating the radii of the main and additional patch using empirical equations acquired for this design. The empirical formulas are developed based on a comprehensive parametric study where different designs and material parameters are varied to achieve an optimum antenna performance. A 64-element uniform linear array of circular microstrip patch antennas is designed and simulated for achieving circular polarization (CP) with more than (20 dB) directivity. Since the axial ratio bandwidth of the implemented antenna is narrow, a sequential rotation of radiating patches with suitable excitation phase shifting has been applied to improve the polarization purity over a wide range of frequencies with higher gain compared to a single patch.
Author: Akhtar Kalam
Publisher: Springer
ISBN: 9811047650
Category : Technology & Engineering
Languages : en
Pages : 808
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Book Description
This book is a compilation of research work in the interdisciplinary areas of electronics, communication, and computing. This book is specifically targeted at students, research scholars and academicians. The book covers the different approaches and techniques for specific applications, such as particle-swarm optimization, Otsu’s function and harmony search optimization algorithm, triple gate silicon on insulator (SOI)MOSFET, micro-Raman and Fourier Transform Infrared Spectroscopy (FTIR) analysis, high-k dielectric gate oxide, spectrum sensing in cognitive radio, microstrip antenna, Ground-penetrating radar (GPR) with conducting surfaces, and digital image forgery detection. The contents of the book will be useful to academic and professional researchers alike.
Author: Jo-Ana Quirch
Publisher:
ISBN:
Category :
Languages : en
Pages : 128
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Book Description
