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Use Of Genetic Algorithms In Microstrip Antenna Design Using The Cavity Model
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Book Synopsis Use of Genetic Algorithms in Microstrip Antenna Design Using the Cavity Model by : Jayanthi Srinivasan
Download or read book Use of Genetic Algorithms in Microstrip Antenna Design Using the Cavity Model written by Jayanthi Srinivasan and published by . This book was released on 1999 with total page 252 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis A Simple Enhanced Cavity Model for Microstrip Patch Antennas and Calculations of Optimized Parameters Using a Genetic Algorithm / by : Sadat Zaman
Download or read book A Simple Enhanced Cavity Model for Microstrip Patch Antennas and Calculations of Optimized Parameters Using a Genetic Algorithm / written by Sadat Zaman and published by . This book was released on 2006 with total page 146 pages. Available in PDF, EPUB and Kindle. Book excerpt: "There is a need in today's industry to model the resonant frequency of the rectangular microstrip patch antenna very accurately because of its narrow bandwidth and increased use in communication applications. In this thesis, the cavity model is presented and updated in order to accurately analyze microstrip patch antennas. Also a genetic algorithm (GA) is used to optimize the patch for length and width so that in turn the maximum resonant frequency could be determined. The enhanced cavity model is shown to give more accurate results than another popular model while still being quite a simple model. It is further demonstrated that the GA can provide the global maximum for resonant frequency given a range for length and width of the patch." --
Book Synopsis E-shaped Microstrip Patch Antenna Design Using Genetic Algorithms by :
Download or read book E-shaped Microstrip Patch Antenna Design Using Genetic Algorithms written by and published by . This book was released on 2006 with total page 282 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Microstrip Antenna Design Using Genetic Algorithm by : Laurent Foissey
Download or read book Microstrip Antenna Design Using Genetic Algorithm written by Laurent Foissey and published by . This book was released on 2001 with total page 140 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Fractal Antenna Design using Bio-inspired Computing Algorithms by : Balwinder S. Dhaliwal
Download or read book Fractal Antenna Design using Bio-inspired Computing Algorithms written by Balwinder S. Dhaliwal and published by Bentham Science Publishers. This book was released on 2023-06-20 with total page 155 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book presents research focused on the design of fractal antennas using bio-inspired computing techniques. The authors present designs for fractal antennas having desirable features like size reduction characteristics, enhanced gain, and improved bandwidths. The research is summarized in six chapters which highlight the important issues related to fractal antenna design and the mentioned computing techniques. Chapters demonstrate several applied concepts and techniques used in the process such as Artificial Neural Networks (ANNs), Genetic Algorithms (GAs), Particle Swarm Optimization (PSO) and Bacterial Foraging Optimization (BFO). The work aims to provide cost-effective and efficient solutions to the demand for compact antennas due to the increasing demand for reduced sizes of components in modern wireless communication devices. A key feature of the book includes an extensive literature survey to understand the concept of fractal antennas, their features, and design approaches. Another key feature is the systematic approach to antenna design. The book explains how the IE3D software is used to simulate various fractal antennas, and how the results can be used to select a design. This is followed by ANN model development and testing for optimization, and an exploration of ANN ensemble models for the design of fractal antennas. The bio-inspired computing techniques based on GA, PSO, and BFO are developed to find the optimal design of the proposed fractal antennas for the desired applications. The performance comparison of the given computing techniques is also explained to demonstrate how to select the best algorithm for a given bio-inspired design. Finally, the book explains how to evaluate antenna designs. This book is a valuable resource for students (from UG to PG levels) and research scholars undertaking learning modules or projects on microstrip and patch antenna design in communications or electronics engineering courses.
Download or read book 54. Auktion written by and published by . This book was released on 2009 with total page 99 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Parameter Tuning of Microstrip Antennas Design Using Genetic Algorithm by : 潘進儒
Download or read book Parameter Tuning of Microstrip Antennas Design Using Genetic Algorithm written by 潘進儒 and published by . This book was released on 2006 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
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.
Book Synopsis Advancement in Microstrip Antennas with Recent Applications by : Ahmed Kishk
Download or read book Advancement in Microstrip Antennas with Recent Applications written by Ahmed Kishk and published by BoD – Books on Demand. This book was released on 2013-03-06 with total page 398 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.
Book Synopsis Shape optimization of printed patch absorber and microstrip antenna structures using the genetic algorithm by : Hosung Choo
Download or read book Shape optimization of printed patch absorber and microstrip antenna structures using the genetic algorithm written by Hosung Choo and published by . This book was released on 2000 with total page 82 pages. Available in PDF, EPUB and Kindle. Book excerpt:
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.
Book Synopsis Antenna Design by Simulation-Driven Optimization by : Slawomir Koziel
Download or read book Antenna Design by Simulation-Driven Optimization written by Slawomir Koziel and published by Springer Science & Business Media. This book was released on 2014-02-12 with total page 145 pages. Available in PDF, EPUB and Kindle. Book excerpt: This Brief reviews a number of techniques exploiting the surrogate-based optimization concept and variable-fidelity EM simulations for efficient optimization of antenna structures. The introduction of each method is illustrated with examples of antenna design. The authors demonstrate the ways in which practitioners can obtain an optimized antenna design at the computational cost corresponding to a few high-fidelity EM simulations of the antenna structure. There is also a discussion of the selection of antenna model fidelity and its influence on performance of the surrogate-based design process. This volume is suitable for electrical engineers in academia as well as industry, antenna designers and engineers dealing with computationally-expensive design problems.
Book Synopsis Design and Implementation of Band Rejected Antennas Using Adaptive Surface Meshing and Genetic Algorithms Methods by : Mohammed Saeed Binmelha
Download or read book Design and Implementation of Band Rejected Antennas Using Adaptive Surface Meshing and Genetic Algorithms Methods written by Mohammed Saeed Binmelha and published by . This book was released on 2013 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Microstrip Patch Antenna Learning using MATLAB. Theory and Implementation by : Jagadish Jadhav
Download or read book Microstrip Patch Antenna Learning using MATLAB. Theory and Implementation written by Jagadish Jadhav and published by GRIN Verlag. This book was released on 2021-07-30 with total page 56 pages. Available in PDF, EPUB and Kindle. Book excerpt: Scientific Study from the year 2021 in the subject Engineering - Communication Technology, , course: M. Tech, language: English, abstract: Microstrip patch antenna is used to send onboard parameters of article to the ground while under operating conditions. By the study of this book we find out how to investigate a new method of teaching microstrip patch antenna design for undergraduate students by using MATLAB. Effect of changes in basic parameter microstrip patch antenna on its radiation pattern and other parameters to study the effect of resonant frequency and substrate parameters like, relative dielectric constant, substrate thickness on the radiation parameters of bandwidth and physical dimension of the microstrip patch antenna can be determined by using GUI. In this book we develops simple CAD (GUI) formulas that describe the basic properties of microstrip patch antenna using MATLAB. By the usage of this teaching tool we can analyze the behaviour of the microstrip patch antenna and design of it for different material. Satellite communication and wireless communication has been developed rapidly in the past decades and it has already a dramatic impact on human life. In the last few years, the development of wireless local area networks (WLAN) represented one of the principal interests in the information and communication field. Thus, the current trend in commercial and government communication systems has been to develop low cost, minimal weight, low profile antennas that are capable of maintaining high performance over a large spectrum of frequencies. This technological trend has focused much effort into the design of microstrip (patch) antennas. The variety in design that is possible with microstrip antenna probably exceeds that of any other type of antenna element. In addition, once the shape and operating mode of the patch are selected, designs become very versatile in terms of operating frequency, polarization, pattern, and impedance. They are extremely low profile, lightweight, simple and inexpensive to fabricate using modern day printed circuit board technology, compatible with microwave and millimeter-wave integrated circuits (MMIC), and have the ability to conform to planar and non planar surfaces.
Book Synopsis Microstrip and Printed Antenna Design by : Randy Bancroft
Download or read book Microstrip and Printed Antenna Design written by Randy Bancroft and published by IET. This book was released on 2009-06-30 with total page 303 pages. Available in PDF, EPUB and Kindle. Book excerpt: Offering extensive coverage of microstrip antennas, from rectangular and circular to broadband and dual-band, this text gives a complete introduction to useful designs and the implementation aspects of these types of antennas.
Book Synopsis Microstrip Patch Antenna with Koch Fractal Geometry Based on Genetic Algorithms by :
Download or read book Microstrip Patch Antenna with Koch Fractal Geometry Based on Genetic Algorithms written by and published by . This book was released on 2013 with total page 61 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Creating and Optimizing Microstrip Antennas Using the Genetic Algorithm and the Finite Difference Time Domain Method by : Lance Allen Griffiths
Download or read book Creating and Optimizing Microstrip Antennas Using the Genetic Algorithm and the Finite Difference Time Domain Method written by Lance Allen Griffiths and published by . This book was released on 2005 with total page 256 pages. Available in PDF, EPUB and Kindle. Book excerpt: