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Author : Wilfred N. Caron
Publisher : Amer Radio Relay League
ISBN 13 : 9780872592209
Total Pages : 15 pages
Book Rating : 4.5/5 (922 download)
Download or read book Antenna Impedance Matching written by Wilfred N. Caron and published by Amer Radio Relay League. This book was released on 1989-01-01 with total page 15 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : James T. Aberle
Publisher : Morgan & Claypool Publishers
ISBN 13 : 1598291033
Total Pages : 53 pages
Book Rating : 4.5/5 (982 download)
Download or read book Antennas with Non-Foster Matching Networks written by James T. Aberle and published by Morgan & Claypool Publishers. This book was released on 2007-12-01 with total page 53 pages. Available in PDF, EPUB and Kindle. Book excerpt: Most antenna engineers are likely to believe that antennas are one technology that is more or less impervious to the rapidly advancing semiconductor industry. However, as demonstrated in this lecture, there is a way to incorporate active components into an antenna and transform it into a new kind of radiating structure that can take advantage of the latest advances in analog circuit design. The approach for making this transformation is to make use of non-Foster circuit elements in the matching network of the antenna. By doing so, we are no longer constrained by the laws of physics that apply to passive antennas. However, we must now design and construct very touchy active circuits. This new antenna technology is now in its infancy. The contributions of this lecture are (1) to summarize the current state-of-the-art in this subject, and (2) to introduce some new theoretical and practical tools for helping us to continue the advancement of this technology.
Author : Francisco W. Molina
Publisher :
ISBN 13 :
Total Pages : 62 pages
Book Rating : 4.:/5 (138 download)
Download or read book Antenna Impedance Matching written by Francisco W. Molina and published by . This book was released on 1967 with total page 62 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author :
Publisher :
ISBN 13 :
Total Pages : 58 pages
Book Rating : 4.:/5 (227 download)
Download or read book ANTENNA IMPEDANCE MATCHING BY MEANS OF ACTIVE NETWORKS. written by and published by . This book was released on 1962 with total page 58 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Alan J. Fenn
Publisher : Artech House
ISBN 13 : 1630815209
Total Pages : 481 pages
Book Rating : 4.6/5 (38 download)
Download or read book Electromagnetics and Antenna Technology written by Alan J. Fenn and published by Artech House. This book was released on 2017-12-31 with total page 481 pages. Available in PDF, EPUB and Kindle. Book excerpt: Written by a leading expert in the field, this practical new resource presents the fundamentals of electromagnetics and antenna technology. This book covers the design, electromagnetic simulation, fabrication, and measurements for various types of antennas, including impedance matching techniques and beamforming for ultrawideband dipoles, monopoles, loops, vector sensors for direction finding, HF curtain arrays, 3D printed nonplanar patch antenna arrays, waveguides for portable radar, reflector antennas, and other antennas. It explores the essentials of phased array antennas and includes detailed derivations of important field equations, and a detailed formulation of the method of moments. This resource exhibits essential derivations of equations, providing readers with a strong foundation of the underpinnings of electromagnetics and antennas. It includes a complete chapter on the details of antenna and electromagnetic test and measurement. This book explores details on 3D printed non-planar circular patch array antenna technology and the design and analysis of a planar array-fed axisymmetric gregorian reflector. The lumped-element impedance matched antennas are examined and include a look at an analytic impedance matching solution with a parallel LC network. This book provides key insight into many aspects of antenna technology that have broad applications in radar and communications.
Author : Christopher Bowick
Publisher : Elsevier
ISBN 13 : 0080516289
Total Pages : 177 pages
Book Rating : 4.0/5 (85 download)
Download or read book RF Circuit Design written by Christopher Bowick and published by Elsevier. This book was released on 2014-06-28 with total page 177 pages. Available in PDF, EPUB and Kindle. Book excerpt: Essential reading for experts in the field of RF circuit design and engineers needing a good reference. This book provides complete design procedures for multiple-pole Butterworth, Chebyshev, and Bessel filters. It also covers capacitors, inductors, and other components with their behavior at RF frequencies discussed in detail. Provides complete design procedures for multiple-pole Butterworth, Chebyshev, and Bessel filters Covers capacitors, inductors, and other components with their behavior at RF frequencies discussed in detail
Author : S. Laxpati
Publisher :
ISBN 13 :
Total Pages : 0 pages
Book Rating : 4.:/5 (951 download)
Download or read book Antenna Impedance Matching by Means of Active Networks written by S. Laxpati and published by . This book was released on 1962 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Binboga Siddik Yarman
Publisher : Springer Science & Business Media
ISBN 13 : 1402084188
Total Pages : 313 pages
Book Rating : 4.4/5 (2 download)
Download or read book Design of Ultra Wideband Antenna Matching Networks written by Binboga Siddik Yarman and published by Springer Science & Business Media. This book was released on 2008-08-25 with total page 313 pages. Available in PDF, EPUB and Kindle. Book excerpt: Design of Ultra Wideband Antenna Matching Networks: via Simplified Real Frequency Technique (SRFT) will open up a new horizon for design engineers, researchers, undergraduate and graduate students to construct multi-band and ultra wideband antenna matching networks for antennas which in turn will push the edge of technology to manufacture new generation of complex communication systems beyond microwave frequencies both in commercial and military line. In Design of Ultra Wideband Antenna Matching Networks, many real life examples are presented to design antenna matching networks over HF and cellular commercial multi-band frequencies. For each example, open MatLab source codes are provided so that the reader can easily generate and verify the results of the examples included in the book.
Author : Louis E. Frenzel
Publisher : Prentice Hall
ISBN 13 : 9780130965776
Total Pages : 0 pages
Book Rating : 4.9/5 (657 download)
Download or read book RF Power for Industrial Applications written by Louis E. Frenzel and published by Prentice Hall. This book was released on 2004 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book, the only one of its kind on the market, focuses on RF (Radio Frequency) power for use in semiconductor manufacturing equipment that generate a plasma for processing wafers. The concepts, equipment, and techniques covered in this book emphasize industrial applications, but are also applicable to most radio communications equipment. Topics covered in this unique book are: signal sources, RF power amplifier fundamentals, high power RF amplifiers, impedance matching, transmission lines, smith charts, power measurement and control, troubleshooting and maintenance of RF power systems, and industrial applications of RF power. This book is useful for engineers and technicians who install, operate, maintain, service, and repair RF power generating equipment. It is also useful for continuing education courses in company training programs, industrial training courses, or seminars and workshops.
Author : Mario Agio
Publisher : Cambridge University Press
ISBN 13 : 110701414X
Total Pages : 481 pages
Book Rating : 4.1/5 (7 download)
Download or read book Optical Antennas written by Mario Agio and published by Cambridge University Press. This book was released on 2013-01-03 with total page 481 pages. Available in PDF, EPUB and Kindle. Book excerpt: This consistent and systematic review of recent advances in optical antenna theory and practice brings together leading experts in the fields of electrical engineering, nano-optics and nano-photonics, physical chemistry and nanofabrication. Fundamental concepts and functionalities relevant to optical antennas are explained, together with key principles for optical antenna modelling, design and characterisation. Recognising the tremendous potential of this technology, practical applications are also outlined. Presenting a clear translation of the concepts of radio antenna design, near-field optics and field-enhanced spectroscopy into optical antennas, this interdisciplinary book is an indispensable resource for researchers and graduate students in engineering, optics and photonics, physics and chemistry.
Author : Sung Eun Kim
Publisher :
ISBN 13 :
Total Pages : pages
Book Rating : 4.:/5 (926 download)
Download or read book Optimization Algorithm for Antenna Impedance Matching in Digitally Tunable Network written by Sung Eun Kim and published by . This book was released on 2015 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Harmon Dale Strieter
Publisher :
ISBN 13 :
Total Pages : 76 pages
Book Rating : 4.3/5 (129 download)
Download or read book An Automatic Impedance Matcher for a Half-wave Dipole Antenna written by Harmon Dale Strieter and published by . This book was released on 1954 with total page 76 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Zhi Ning Chen
Publisher : John Wiley & Sons
ISBN 13 : 1119611156
Total Pages : 322 pages
Book Rating : 4.1/5 (196 download)
Download or read book Substrate-Integrated Millimeter-Wave Antennas for Next-Generation Communication and Radar Systems written by Zhi Ning Chen and published by John Wiley & Sons. This book was released on 2021-04-29 with total page 322 pages. Available in PDF, EPUB and Kindle. Book excerpt: Substrate-Integrated Millimeter-Wave Antennas for Next-Generation Communication and Radar Systems The first and only comprehensive text on substrate-integrated mmW antenna technology, state-of-the-art antenna design, and emerging wireless applications Substrate-Integrated Millimeter-Wave Antennas for Next-Generation Communication and Radar Systems elaborates the most important topics related to revolutionary millimeter-wave (mmW) technology. Following a clear description of fundamental concepts including substrate-integrated waveguides and loss analysis, the text treats key design methods, prototyping techniques, and experimental setup and testing. The authors also highlight applications of mmW antennas in 5G wireless communication and next-generation radar systems. Readers are prepared to put techniques into practice through practical discussions of how to set up testing for impedance matching, radiation patterns, gain from 24GHz up to 325 GHz, and more. This book will bring readers state-of-the-art designs and recent progress in substrate-integrated mmW antennas for emerging wireless applications. Substrate-Integrated Millimeter-Wave Antennas for Next-Generation Communication and Radar Systems is the first comprehensive text on the topic, allowing readers to quickly master mmW technology. This book: Introduces basic concepts such as metamaterials Huygens's surface, zero-index structures, and pattern synthesis Describes prototyping in the form of fabrication based on printed-circuit-board, low-temperature-co-fired-ceramic and micromachining Explores applications for next-generation radar and imaging systems such as 24-GHz and 77-GHz vehicular radar systems Elaborates design methods including waveguide-based feeding network, three-dimensional feeding structure, dielectric loaded aperture antenna element, and low-sidelobe synthesis The mmW is one of today’s most important emerging technologies. This book provides graduate students, researchers, and engineers with the knowledge they need to deploy mmW systems and develop new antenna designs with low cost, low loss, and low complexity.
Author : Jerry Sevick
Publisher : Noble Publishing
ISBN 13 :
Total Pages : 314 pages
Book Rating : 4.F/5 ( download)
Download or read book Transmission Line Transformers written by Jerry Sevick and published by Noble Publishing. This book was released on 2001 with total page 314 pages. Available in PDF, EPUB and Kindle. Book excerpt: This classic text on transmission line transformers for high frequencies includes new chapters on efficiency, power combiners, mixer transformers, and equal-delay transformers. Sevick explains the basic theory that results in transmission line transformers with higher performance than conventional magnetic flux-coupled transformers.
Author : D. J. White
Publisher :
ISBN 13 : 9781423573135
Total Pages : 128 pages
Book Rating : 4.5/5 (731 download)
Download or read book Active Impedance Matching for Superdirective, Super-Gain HTS Antenna Arrays written by D. J. White and published by . This book was released on 1996-03-01 with total page 128 pages. Available in PDF, EPUB and Kindle. Book excerpt: The radiation pattern of a super gain antenna array is determined by specifying the antenna element currents in both magnitude and phase. The spacing between elements in such an array is small with respect to a wavelength and interelement coupling cannot be ignored. The specification of the element currents together with this coupling produces an active input impedance to each element that may be very different from the usual antenna impedance of the individual elements. For those active impedances with a positive real part, the element matching network must match this impedance. Furthermore, each matching network must be supplied with the proper input signal, in magnitude and phase, to ensure a match with the specified currents. If the active impedance has a negative real part, the matching network must be replaced with negative impedance. To avoid excess loss, this impedance can be replaced with a lossless two port, presenting this impedance to the antenna with its output signal then combined (added) to the overall input signal driving the array.
Author : Nathawut Homsup
Publisher :
ISBN 13 :
Total Pages : pages
Book Rating : 4.:/5 (971 download)
Download or read book Evaluation and Enhancement of Nature-inspired Optimization for Antenna Impedance Matching written by Nathawut Homsup and published by . This book was released on 2016 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Advancements in the technology of communication systems have led to increased requirements and constraints on antennas in terms of cost, bandwidth, and many other performance parameters. In the design of any antenna, a significant amount of time and resources is spent on impedance matching. There are two widely used approaches to impedance matching. The first is to modify the antenna geometry by identifying the appropriate degree of freedom within the structure. The second is the lumped element approach, which modifies the antenna with a passive network consisting of inductors and capacitors to the impedance mismatch between the source and the antenna load. In the second approach, different types of circuits can be used in order to obtain the best results, such as a two lumped elements L network, a T network, a three lumped elements Pi network, or a network with more lumped elements. In order to achieve the desired results from these circuits, we must choose the optimal values of inductor, capacitor, and transducer elements. To optimize parameters in impedance matching network design, two of the most promising approaches are those of the nature-inspired genetic algorithm (GA) and swarm intelligence algorithms. Examples of these swarm algorithms are particle swarm optimization (PSO), ant colony optimization (ACO), and firefly algorithm (FA). Nature-inspired optimization methods have been used in antenna design for decades in the form of GA and PSO. However, many other algorithms are relatively new to the antenna design problems, even though, these algorithms have already been successfully applied to many other problems and have gained interest in numerous engineering and scientific research fields.This dissertation compares the described optimization methods by using them to minimize the maximum VSWR over the frequencies 3.5-3.85MHz of the impedance matching network that connects to a high-frequency dipole antenna. In order to satisfy the match over a finite bandwidth, lumped elements were used to construct the matching network, and then adjusting the values of L and C elements. Starting with the global optimization toolbox from MATLAB, which uses pattern-search, simulated annealing and genetic algorithm, and then compared with the four newer nature-inspired algorithms listed above. To enhance the nature-inspired algorithms, a new modification of the firefly algorithm (MFA) is proposed. The traditional FA is modified to take into account both the light intensity of and distance between each firefly. This modification results in a more realistic movement of the dimmer firefly towards brighter ones. The proposed algorithm is tested on the traditional FA with eleven standard benchmark functions and on impedance matching network design problems, including both lossless and lossy networks. The future work for this dissertation is to improve the new MFA by using other techniques such as a hybrid technique with other algorithms. Other more complicated optimization problems can be used to test the MFA.
Author : Nicholas Yaru
Publisher :
ISBN 13 :
Total Pages : 224 pages
Book Rating : 4.:/5 (656 download)
Download or read book A Synthesis Method for Broad-band Antenna Impedance Matching Networks written by Nicholas Yaru and published by . This book was released on 1955 with total page 224 pages. Available in PDF, EPUB and Kindle. Book excerpt:
