Automated Design And Optimization Of Wire Antennas Using Genetic Algorithms

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Automated Design and Optimization of Wire Antennas Using Genetic Algorithms

Author : Derek Scott Linden
Publisher :
ISBN 13 :
Total Pages : 150 pages
Book Rating : 4.3/5 (243 download)

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Book Synopsis Automated Design and Optimization of Wire Antennas Using Genetic Algorithms by : Derek Scott Linden

Download or read book Automated Design and Optimization of Wire Antennas Using Genetic Algorithms written by Derek Scott Linden and published by . This book was released on 1997 with total page 150 pages. Available in PDF, EPUB and Kindle. Book excerpt: A Genetic Algorithm (GA) has been used in conjunction with the Numerical Electromagnetics Code, Version 2 (NEC2) to create and optimize atypical wire antenna designs with impressive characteristics. Antenna design parameters are encoded into an ordered series of numbers and/or symbols analogous to a biological chromosome. A cost function that quantifies how well a design meets the engineer's specifications is created. The GA uses these to generate and evaluate a population of designs. The most successful designs are then promoted and mixed through mating and mutation, while poor designs are removed. This process, difficult to trap in local minima, continues until convergence criteria are met, generally yielding excellent designs with no user intervention or initial guesses. Three antennas have been optimized: a monopole loaded with a modified folded dipole, the Yagi antenna, and the crooked-wire genetic antenna. Prior study of the loaded monopole had shown hemispherical coverage was possible. The GA found an asymmetric loaded monopole with an average variation in gain over the hemisphere of only 0.4dB, confirmed by measurement. GA-optimized Yagi antennas surpassed the gain of conventional Yagis by about 1dB, improvement also confirmed by measurement. The GA designed a Yagi with a beamwidth of 50 deg -60 deg, sidelobes nearly 25dB down, and a 14% bandwidth-specifications difficult to achieve using conventional techniques. The crooked-wire genetic antenna is several wires joined in series; locations and lengths are determined by the GA. Optimization for hemispherical coverage with right-hand circular polarization (RHCP) produced highly unusual shapes unrealizable using a conventional approach. RHCP hemispherical coverage was achieved with less than 4dB variation. Measurements verify the results.

Genetic Algorithm Optimization Applied to Planar and Wire Antennas

Author : Andrea M. Wyant
Publisher :
ISBN 13 :
Total Pages : 194 pages
Book Rating : 4.:/5 (172 download)

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Book Synopsis Genetic Algorithm Optimization Applied to Planar and Wire Antennas by : Andrea M. Wyant

Download or read book Genetic Algorithm Optimization Applied to Planar and Wire Antennas written by Andrea M. Wyant and published by . This book was released on 2007 with total page 194 pages. Available in PDF, EPUB and Kindle. Book excerpt: "Antenna design has grown more stringent and difficult over the years as the world becomes strictly a wireless environment. The inherent tradeoffs that exist between gain, radiation pattern, bandwidth, and physical size and the multiple parameters that must be considered make antenna design a lengthy and tedious process. Methods have been devised which automate this complex process of antenna optimization through the use of genetic algorithms, particle swarm optimization, and simulated annealing. Genetic algorithms are capable of handling a large number of design parameters and work for optimization problems that have discontinuous or non-differentiable multi-dimensional solution spaces, making them ideal for antenna optimization. In the present work, a genetic algorithm has been used for size reduction in microstrip patch antennas and design tradeoff optimization between beamwidth and gain in helical antennas. A method for reducing the size of microstrip patch antennas by up to 75% by removing rectangular and circular slots from the metal of the microstrip patch is presented. A solid patch antenna that resonates at 10 GHz is forced to resonant at 6 GHz through the removal of the different shaped slots. Given the number and shape of the slots, the genetic algorithm is used to optimize the size and location of the slot on the patch. The designs are obtained by interfacing the genetic algorithm and Ansoft High Frequency System Simulator (HFSS) and validated through design, construction, and testing. High gain, with broad half-power beamwidths (HPBW) is traditionally extremely difficult to achieve due to the inherent tradeoff between the two. A genetic algorithm has been applied to design a helical antenna with a gain of 10 dB and HPBWs of 60 degrees. In order to achieve this, three physical parameters of the helix have been changed, namely the pitch, helix radius, and the ground plane geometry. The second objective is to create an antenna that displays different HPBWs in the two radiation planes. This could be extremely useful in many communication environments and there is yet no existing method to achieve this. The genetic algorithm produced a helical antenna that shows a 19 degrees difference in HPBW between the two radiation planes, while still displaying a 7 dB gain and low side lobes. Numerical Electromagnetic Code 4 (NEC4) is used, and a method of communication between MATLAB and NEC4 has been developed to make the genetic algorithm optimization possible"--Abstract.

Antenna Design Optimization

Author : T. L. Pitzer
Publisher :
ISBN 13 : 9781427619495
Total Pages : 128 pages
Book Rating : 4.6/5 (194 download)

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Book Synopsis Antenna Design Optimization by : T. L. Pitzer

Download or read book Antenna Design Optimization written by T. L. Pitzer and published by . This book was released on 2007-12-01 with total page 128 pages. Available in PDF, EPUB and Kindle. Book excerpt: A Genetic Algorithm (GA) is used in concert with the Numerical Electromagnetics Code, Version 4 (NEC4) to create and optimize typical wire antenna designs including single elements and arrays, the result being antennas with impressive characteristics. Previous work in antenna optimization is discussed as it relates to this method. The method shown applies to antennas whose basis of designs are both the Yagi-Uda antenna and the Log Periodic Dipole Array (LPDA) antenna. Also covered are applications in Passive Remote Sensing (PRS) and Over the Horizon Radar (OTHR). With color illustrations. Chapter titles are ...(1) Introduction ...(2) Background in Antenna Design and Optimization with Genetic Algorithms ...(3) Methodology for Designing, Testing and Analyzing Antennas ...(4) Experimental Results and Analysis of Synthesized Antennas ...(5) Conclusions ...(6) Appendix A: How to Use GNEC inside of iSIGHT ...(7) Appendix B: GNEC Code.

Creative Evolutionary Systems

Author : Peter Bentley
Publisher : Morgan Kaufmann
ISBN 13 : 1558606734
Total Pages : 618 pages
Book Rating : 4.5/5 (586 download)

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Book Synopsis Creative Evolutionary Systems by : Peter Bentley

Download or read book Creative Evolutionary Systems written by Peter Bentley and published by Morgan Kaufmann. This book was released on 2002 with total page 618 pages. Available in PDF, EPUB and Kindle. Book excerpt: Written for computer scientists and students, and computer literate artists, designers and specialists in evolutionary computation, this text brings together the most advanced work in the use of evolutionary computation for creative results.

Automated Antenna Design and Optimization Using a Hybrid of Evolutionary Algorithms and Electromagnetic Simulators

Author : Hui Huang
Publisher :
ISBN 13 :
Total Pages : 150 pages
Book Rating : 4.:/5 (852 download)

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Book Synopsis Automated Antenna Design and Optimization Using a Hybrid of Evolutionary Algorithms and Electromagnetic Simulators by : Hui Huang

Download or read book Automated Antenna Design and Optimization Using a Hybrid of Evolutionary Algorithms and Electromagnetic Simulators written by Hui Huang and published by . This book was released on 2006 with total page 150 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Genetic Programming Theory and Practice II

Author : Una-May O'Reilly
Publisher : Springer Science & Business Media
ISBN 13 : 0387232540
Total Pages : 330 pages
Book Rating : 4.3/5 (872 download)

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Book Synopsis Genetic Programming Theory and Practice II by : Una-May O'Reilly

Download or read book Genetic Programming Theory and Practice II written by Una-May O'Reilly and published by Springer Science & Business Media. This book was released on 2006-03-16 with total page 330 pages. Available in PDF, EPUB and Kindle. Book excerpt: The work described in this book was first presented at the Second Workshop on Genetic Programming, Theory and Practice, organized by the Center for the Study of Complex Systems at the University of Michigan, Ann Arbor, 13-15 May 2004. The goal of this workshop series is to promote the exchange of research results and ideas between those who focus on Genetic Programming (GP) theory and those who focus on the application of GP to various re- world problems. In order to facilitate these interactions, the number of talks and participants was small and the time for discussion was large. Further, participants were asked to review each other's chapters before the workshop. Those reviewer comments, as well as discussion at the workshop, are reflected in the chapters presented in this book. Additional information about the workshop, addendums to chapters, and a site for continuing discussions by participants and by others can be found at http://cscs.umich.edu:8000/GPTP-20041. We thank all the workshop participants for making the workshop an exciting and productive three days. In particular we thank all the authors, without whose hard work and creative talents, neither the workshop nor the book would be possible. We also thank our keynote speakers Lawrence ("Dave") Davis of NuTech Solutions, Inc., Jordan Pollack of Brandeis University, and Richard Lenski of Michigan State University, who delivered three thought-provoking speeches that inspired a great deal of discussion among the participants.

Genetic Programming IV

Author : John R. Koza
Publisher : Springer Science & Business Media
ISBN 13 : 9780387250670
Total Pages : 626 pages
Book Rating : 4.2/5 (56 download)

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Book Synopsis Genetic Programming IV by : John R. Koza

Download or read book Genetic Programming IV written by John R. Koza and published by Springer Science & Business Media. This book was released on 2005-03-21 with total page 626 pages. Available in PDF, EPUB and Kindle. Book excerpt: Genetic Programming IV: Routine Human-Competitive Machine Intelligence presents the application of GP to a wide variety of problems involving automated synthesis of controllers, circuits, antennas, genetic networks, and metabolic pathways. The book describes fifteen instances where GP has created an entity that either infringes or duplicates the functionality of a previously patented 20th-century invention, six instances where it has done the same with respect to post-2000 patented inventions, two instances where GP has created a patentable new invention, and thirteen other human-competitive results. The book additionally establishes: GP now delivers routine human-competitive machine intelligence GP is an automated invention machine GP can create general solutions to problems in the form of parameterized topologies GP has delivered qualitatively more substantial results in synchrony with the relentless iteration of Moore's Law

Electromagnetic Optimization by Genetic Algorithms

Author : Yahya Rahmat-Samii
Publisher : Wiley-Interscience
ISBN 13 :
Total Pages : 522 pages
Book Rating : 4.3/5 (91 download)

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Book Synopsis Electromagnetic Optimization by Genetic Algorithms by : Yahya Rahmat-Samii

Download or read book Electromagnetic Optimization by Genetic Algorithms written by Yahya Rahmat-Samii and published by Wiley-Interscience. This book was released on 1999-07-23 with total page 522 pages. Available in PDF, EPUB and Kindle. Book excerpt: Authoritative coverage of a revolutionary technique for overcoming problems in electromagnetic design Genetic algorithms are stochastic search procedures modeled on the Darwinian concepts of natural selection and evolution. The machinery of genetic algorithms utilizes an optimization methodology that allows a global search of the cost surface via statistical random processes dictated by the Darwinian evolutionary concept. These easily programmed and readily implemented procedures robustly locate extrema of highly multimodal functions and therefore are particularly well suited to finding solutions to a broad range of electromagnetic optimization problems. Electromagnetic Optimization by Genetic Algorithms is the first book devoted exclusively to the application of genetic algorithms to electromagnetic device design. Compiled by two highly competent and well-respected members of the electromagnetics community, this book describes numerous applications of genetic algorithms to the design and optimization of various low- and high-frequency electromagnetic components. Special features include: * Introduction by David E. Goldberg, "A Meditation on the Application of Genetic Algorithms" * Design of linear and planar arrays using genetic algorithms * Application of genetic algorithms to the design of broadband, wire, and integrated antennas * Genetic algorithm-driven design of dielectric gratings and frequency-selective surfaces * Synthesis of magnetostatic devices using genetic algorithms * Application of genetic algorithms to multiobjective electromagnetic backscattering optimization * A comprehensive list of the up-to-date references applicable to electromagnetic design problems Supplemented with more than 250 illustrations, Electromagnetic Optimization by Genetic Algorithms is a powerful resource for electrical engineers interested in modern electromagnetic designs and an indispensable reference for university researchers.

Microstrip and Printed Antennas

Author : Debatosh Guha
Publisher : John Wiley & Sons
ISBN 13 : 1119972981
Total Pages : 512 pages
Book Rating : 4.1/5 (199 download)

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Book Synopsis Microstrip and Printed Antennas by : Debatosh Guha

Download or read book Microstrip and Printed Antennas written by Debatosh Guha and published by John Wiley & Sons. This book was released on 2011-02-02 with total page 512 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.

Optimization of Wire Antennas Via Genetic Algorithms and Simplified Real Frequency Technique, and Penetration Through Apertures in Axi-symmetric Structures

Download Optimization of Wire Antennas Via Genetic Algorithms and Simplified Real Frequency Technique, and Penetration Through Apertures in Axi-symmetric Structures PDF Online Free

Author : Korkut Yegin
Publisher :
ISBN 13 :
Total Pages : 362 pages
Book Rating : 4.:/5 (444 download)

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Book Synopsis Optimization of Wire Antennas Via Genetic Algorithms and Simplified Real Frequency Technique, and Penetration Through Apertures in Axi-symmetric Structures by : Korkut Yegin

Download or read book Optimization of Wire Antennas Via Genetic Algorithms and Simplified Real Frequency Technique, and Penetration Through Apertures in Axi-symmetric Structures written by Korkut Yegin and published by . This book was released on 1999 with total page 362 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Handbook of Metaheuristics

Author : Fred W. Glover
Publisher : Springer Science & Business Media
ISBN 13 : 0306480565
Total Pages : 560 pages
Book Rating : 4.3/5 (64 download)

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Book Synopsis Handbook of Metaheuristics by : Fred W. Glover

Download or read book Handbook of Metaheuristics written by Fred W. Glover and published by Springer Science & Business Media. This book was released on 2006-04-11 with total page 560 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book provides both the research and practitioner communities with a comprehensive coverage of the metaheuristic methodologies that have proven to be successful in a wide variety of real-world problem settings. Moreover, it is these metaheuristic strategies that hold particular promise for success in the future. The various chapters serve as stand alone presentations giving both the necessary background underpinnings as well as practical guides for implementation.

Evolvable Systems: From Biology to Hardware

Author : Kiyoshi Tanaka
Publisher : Springer
ISBN 13 : 3540454438
Total Pages : 351 pages
Book Rating : 4.5/5 (44 download)

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Book Synopsis Evolvable Systems: From Biology to Hardware by : Kiyoshi Tanaka

Download or read book Evolvable Systems: From Biology to Hardware written by Kiyoshi Tanaka and published by Springer. This book was released on 2003-06-30 with total page 351 pages. Available in PDF, EPUB and Kindle. Book excerpt: On behalf of the ICES 2001 Conference Committee, it is our pleasure to present to you the proceedings of the fourth International Conference on Evolvable S- tems: From Biology to Hardware, ICES 2001, held in Tokyo, Japan, on 3-5 - tober 2001, addressing the latest developments and discussing challenges facing the ?eld of evolvable systems. The idea of evolving machines, whose origins can be traced back to the - bernetics movement of the 1940s and the 1950s, has recently re-emerged in the form of the nascent ?eld of bio-inspired systems and evolvable hardware. Foll- ing the workshop, Towards Evolvable Hardware, which took place in Lausanne, Switzerland, in October 1995, the First International Conference on Evolvable Systems: From Biology to Hardware (ICES96), was held at the Electrotech- cal Laboratory (MITI), Tsukuba, Japan, in October 1996. The second and the third International Conferences on Evolvable Systems: From Biology to Ha- ware (ICES98 and ICES 2000) were respectively held in Lausanne in September 1998, and in Edinburgh in April 2000. Following the success of these past events, ICES 2001 was dedicated to the promotion and advancement of all aspects of evolvable systems, including ha- ware, software, algorithms, and applications. By bringing together researchers who use biologically inspired concepts to implement real systems in arti?cial - telligence, arti?cial life, robotics, VLSI design, and related domains, ICES 2001 reunited this burgeoning community.

Computational Intelligence and Intelligent Systems

Author : Zhenhua Li
Publisher : Springer
ISBN 13 : 3642342892
Total Pages : 653 pages
Book Rating : 4.6/5 (423 download)

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Book Synopsis Computational Intelligence and Intelligent Systems by : Zhenhua Li

Download or read book Computational Intelligence and Intelligent Systems written by Zhenhua Li and published by Springer. This book was released on 2012-10-06 with total page 653 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book constitutes the refereed proceedings of the 6th International Symposium on Intelligence Computation and Applications, ISICA 2012, held in Wuhan, China, in October 2012. The 72 revised full papers presented were carefully reviewed and selected from numerous submissions. The papers are organized in topical sections on artificial life, adaptive behavior, agents, and ant colony optimization; combinatorial and numerical optimization; communications and computer networks; data mining; evolutionary multi-objective and dynamic optimization; intelligent computation, intelligent learning systems; neural networks; real-world applications.

EH-2001

Author : Didier Keymeulen
Publisher : Institute of Electrical & Electronics Engineers(IEEE)
ISBN 13 : 9780769511801
Total Pages : 304 pages
Book Rating : 4.5/5 (118 download)

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Book Synopsis EH-2001 by : Didier Keymeulen

Download or read book EH-2001 written by Didier Keymeulen and published by Institute of Electrical & Electronics Engineers(IEEE). This book was released on 2001 with total page 304 pages. Available in PDF, EPUB and Kindle. Book excerpt: These proceedings contain 32 papers from the July 2001 conference in Long Beach; the abstract of one invited talk is also included. "The focus of this year's workshop was to provide a roadmap from the current proof-of-concept stage of Evolvable Hardware to the development of larger scale real world systems addressing issues such as evolvability and scalability" (from the Preface). Papers concentrate on topics like the relationships between biology and robotics, the evolution of analog and mixed-signal circuits, survivable and flexible hardware, the evolution of digital functions, the evolution of signal processing circuits, reconfiguration architecture and devices, the evolution of CA brain-inspired architecture, evolvability, and applications. Author index only. c. Book News Inc

A Platform for Antenna Optimization with Numerical Electromagnetics Code Incorporated with Genetic Algorithms

Author : Timothy L. Pitzer
Publisher :
ISBN 13 :
Total Pages : 216 pages
Book Rating : 4.:/5 (78 download)

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Book Synopsis A Platform for Antenna Optimization with Numerical Electromagnetics Code Incorporated with Genetic Algorithms by : Timothy L. Pitzer

Download or read book A Platform for Antenna Optimization with Numerical Electromagnetics Code Incorporated with Genetic Algorithms written by Timothy L. Pitzer and published by . This book was released on 2006 with total page 216 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Development of Active Integrated Antennas and Optimization for Harmonic Suppression Antennas

Author : Dawei Zhou
Publisher :
ISBN 13 :
Total Pages : pages
Book Rating : 4.:/5 (89 download)

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Book Synopsis Development of Active Integrated Antennas and Optimization for Harmonic Suppression Antennas by : Dawei Zhou

Download or read book Development of Active Integrated Antennas and Optimization for Harmonic Suppression Antennas written by Dawei Zhou and published by . This book was released on 2007 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The objectives of this research work are to investigate, design and implement active integrated antennas comprising active devices connected directly to the patch radiators, for various applications in high efficiency RF front-ends, integrated oscillator antennas, design and optimization of harmonic suppression antennas using a genetic algorithm (GA). A computer-aided design approach to obtain a class F operation to optimizing the optimal fundamental load impedance and designing the input matching circuits for an active integrated antenna of the transmitting type is proposed and a case study of a design for 1.6 GHz is used to confirm the design principle. A study of active integrated oscillator antennas with a series feed back using a pseudomorphic high electronmobility transistor (PHEMT) confirms the design procedure in simulation and measurement for the oscillator circuit connected directly to the active antenna. Subsequently, another design of active oscillator antenna using bipolar junction transistor (BJT) improves the phase noise of the oscillation and in addition to achieve amplitude shift keying (ASK) and amplitude modulation (AM) modulation using the proposed design circuit. Moreover, the possibility of using a sensor patch technique to find the power accepted by the antenna at harmonic frequencies is studied. A novel numerical solution, for designing and optimizing active patch antennas for harmonic suppression using GA in collaboration with numerical electromagnetic computation (NEC), is presented. A new FORTRAN program is developed and used for adaptively meshing any planar antenna structure in terms of wire grid surface structures. The program is subsequently implemented in harmonic suppression antenna design and optimization using GA. The simulation and measurement results for several surface structures show a good agreement.

Proceedings of the First NASA/DoD Workshop on Evolvable Hardware

Author : Adrian Stoica
Publisher : I E E E
ISBN 13 :
Total Pages : 290 pages
Book Rating : 4.3/5 (91 download)

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Book Synopsis Proceedings of the First NASA/DoD Workshop on Evolvable Hardware by : Adrian Stoica

Download or read book Proceedings of the First NASA/DoD Workshop on Evolvable Hardware written by Adrian Stoica and published by I E E E. This book was released on 1999 with total page 290 pages. Available in PDF, EPUB and Kindle. Book excerpt: Looks at applying evolution-inspired formalisms to hardware design in order to produce self-reconfigurable electronic hardware by evolutionary and genetic reconfiguration mechanisms. The 35 papers cover the evolution of FPGAs, digital functions, analog and mixed- signal circuits, cellular automata and brain-inspired architectures; reconfiguration architectures and dynamic reconfiguration, advanced reconfigurable devices; applications to the design and adaptation of space sub-systems; and genetic algorithms applications. Titles, but not texts, are included for the nine invited talks. Authors, but not subjects, are indexed. Annotation copyrighted by Book News, Inc., Portland, OR.