A reflectarray antenna or just reflectarray consists of an array of unit cells, illuminated by a feeding antenna source of electromagnetic waves. The cloudsat antenna design is included as a point of reference. The bowtie dipoles, consisting of two vshaped elements, have a larger bandwidth than ordinary dipoles, allowing the antenna to cover the wide uhf television band. A framework for the design and optimization of large duallinear polarized, shapedbeam reflectarrays for advanced wireless communications is presented. What is the best book regarding antenna systems excluding. Cocccetti f, stolf p, broto l and plana r deployment and management of large planar reflectarray antennas simulation on grid proceedings of the 7th international workshop on challenges of large applications in distributed environments, 1726. Reflectarray antennas by payam nayeri overdrive rakuten. Throughout the book numerous illustrative design examples including numerical and experimental results are provided. They are often used in the vhf and uhf frequency bands. This approach greatly facilitates understanding of the working of the reflectarray antenna, and provides an intuitive explanation for the reflectarray behavior. The methodology is based on the generalized intersection approach ia algorithm for both phaseonly synthesis pos and direct optimization of the reflectarray layout, as well as on the use of a method of moments in. Due to the variety of methods of analysis and design, and the different antenna structures available, the applications covered in this book are made to some of the most basic and practical.
Reflectarray antennas wiley online books wiley online library. The authors describe, in detail, design procedures for a wide range of applications, including broadband, multiband, multibeam, contourbeam, beamscanning, and conformal reflectarray antennas. By using aberration theory, the mechanism of the frequency characteristics of the beam shift and gain reduction will be clarified. Basic theories for design and analysis of reflectarray antennas, which will help to build up the fundamental capabilities for reflectarray research along with a wealth of design examples that can serve as a good reference for the. Table 2 compares several different antenna design approaches.
The proposed unit element is composed of a concentric, multiresonance circularring. Reflectarray antenna elements are analyzed by the infinite array theory, whereas a model based on the equivalence principle is applied to calculate the farfield pattern of a reflectarray system. The distance travelled by the radiated waves to the noncentered patches is more as compared to the center patch 12. Theory, designs, and applications in recent years, reflectarrays have emerged as the new generation of high gain antennas, which have attracted increasing interest in the antenna community because of their lowprofile, lowmass, and lowcost features. An antenna consisting of a feed and an array of reflecting elements arranged on a surface and adjusted so that the reflected waves from the individual elements combine to produce a prescribed secondary radiation pattern. They provide sufficient coverage of basic reflectarray theory to. The book is intended for engineers that know the basics of antenna theory and are starting to become familiar with this new generation of high. The unit cells are usually backed by a ground plane, and the incident wave reflects off them towards the direction of the beam. The reflectarray element is characterized in a unit cell. Unlike the conventional paraboloidal reflector it is a flat structure, and can consist of a structure. An antenna system is the antenna and everything else between the antenna and the radio. If a parabolic reflector antenna is used for transmitting a signal, the signal from the feed, comes out of a dipole or a horn antenna, to focus the wave on to the parabola. In a discipline that has experienced vast technological changes, this text offers the most recent look at all the necessary topics. It means that, the waves come out of the focal point and strike the paraboloidal reflector.
New coverage of microstrip antennas provides information essential to a wide variety of practical designs of rectangular and circular. Advanced design methodologies and novel applications of reflectarray. It is also intended for researchers and specialists that have a good knowledge of the basic theories in reflectarray, and aim at designing reflectarray antennas for specific applications. These are preliminary notes, intended only for distribution among the participants.
In this paper, the broadband conditions of a reflectarray antenna will be shown using aberration theory. Microstrip reflectarray antenna for the scanscat radar. An overview of the reflectarray antenna research history, including various implementations and stateoftheart. However, over the past two decades the reflectarray antenna 1,2 has emerged as an alternative. It illustrates the advantages of the reflector reflectarray design in terms of performance and swap. An enabling technology for nasas dualfrequency ace radar paul e. A modern form of reflective array is the bow tie uhf television antenna. Two basic methods for analysis of the reflectarray antenna are studied in this work.
Other readers will always be interested in your opinion. Further, a method for the mirror surface is described to become wide band. Reflectarray antenna design using matlab and cst part 1. Ictpituursi school on wireless networking for development the abdus salam international centre for theoretical physics ictp, trieste italy, 5 to 24 february 2007. A direct comparison with conventional reflector antennas is provided, focusing on conventional efficiency figures of reflectors. The operating principle of a reflectarray antennasee fig. Experimental demonstration of a waveguide reflectarray. The reflectarray is a novel type of highgain antennas, which combines some of. Featuring indepth theoretical analysis along with practical design examples, reflectarray antennas is an excellent textreference for engineering graduate students, researchers, and engineers in the field of antennas. Both authors are well respected practitioners who have build these antennas and developed. Reflectarray antennas by payam nayeri, 9781118846766, available at book depository with free delivery worldwide. Reflectarray pattern optimization for advanced wireless.
Radiation analysis and characteristics of conformal. The radiation pattern of a planar reflectarray antenna with thousands of elements can be computed quite efficiently using the classical array theory formulation with proper element excitation. Introduction to reflectarray antennas reflectarray antennas. Reflectarray antennas john huang, jose antonio encinar. Introduction to reflectarray antennas reflectarray.
Configuration of reflectarray antenna in 2d and 3d view 1. This leads to rules of thumb for reflectarray antenna designs. Mustafa a and rajendran t 2019 an effective design of wearable antenna with double flexible substrates and defected ground structure for healthcare monitoring system, journal of medical systems, 43. This paper presents the concept of reflectarray in a novel way, utilizing a graphical visualization tool. Theory, designs, and applications in recent years, reflectarrays have emerged as the new generation of highgain antennas, which have attracted increasing interest in the antenna community because of their lowprofile, lowmass, and lowcost features. In a recent study, it was shown that the calculated radiation pattern using this approach shows a good agreement with fullwave simulations 5. It belongs on the bookshelves of university libraries, research institutes, and industrial labs and research facilities. This book begins with introductory material on reflectarray antennas and progresses to the presentation of stateoftheart research in the field. In telecommunications and radar, a reflective array antenna is a class of directive antennas in which multiple driven elements are mounted in front of a flat surface designed to reflect the radio waves in a desired direction. An enhanced reflectarray ra antenna built of elements with reduced reflection phase sensitivity is presented. It illustrates the advantages of the reflectorreflectarray design in terms of performance and swap.
Reflectarray antennas john huang, jose antonio encinar describes the configuration and principles of a reflectarray antenna, its advantages over other antennas, the history of its development, analysis techniques, practical design procedures, bandwidth issues and wideband techniques, as well as applications and recent developments. Reflectarray antennas theory, designs, and applications. A general procedure is proposed for reflectarray antenna designs. Both authors are well respected practitioners who have build these antennas and developed them for space flight. Description of the microstrip reflectarray when many antenna elements with open or short circuited terminations are arranged in a planar aperture and are illuminated by a feed antenna as shown in figure 3, these elements will re. Like paraboloidal reflectors, it is fed by a lowdirectivity feed radiator located at a focal point. A wideband reflectarray antenna consisting of single. Nov 09, 2007 describes the configuration and principles of a reflectarray antenna, its advantages over other antennas, the history of its development, analysis techniques, practical design procedures, bandwidth issues and wideband techniques, as well as applications and recent developments.
Jones l and manassero g automated synthesis of a fixed. Novel photonicallycontrolled reflectarray antenna, ieee. Reflectarray antennas download ebook pdf, epub, tuebl, mobi. The reflectarray is a novel type of highgain antennas, which combines some of favorable features of reflectors and arrays. This wave now gets reflected as collimated wave front, as discussed previously. In this video, i have developed a matlab gui for designing the reflectarray antenna. The reflectarray antenna is a hybrid design combining many of the best features of reflector antennas and printed arrays, in a lowprofile, lowmass, highly costeffective design.
Vhf examples are generally large and resemble a highway billboard, so. There is an explosion of available books and articles on the subject of antennae and antenna systems. Theory, designs and applications payam nayeri, fan yang, atef. Describes the configuration and principles of a reflectarray antenna, its advantages over other antennas, the history of its development, analysis techniques, practical design procedures, bandwidth issues and wideband techniques, as well as applications and recent developments.
It consists of a spacefeeding primary source and an array of reflecting elements with individually predesigned phases to collimate or shape the highgain beam in the desired direction. New coverage of microstrip antennas provides information essential to a wide variety of practical designs of rectangular and circular patches, including computer programs. The latest resource for the study of antenna theory. Semantic scholar extracted view of reflectarray antennas. A study of the broadband characteristic of reflectarray. Both authors are well respected practitioners who have build these. Reflectarray antennas analysis design fabrication and.
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