Two basic methods for analysis of the reflectarray antenna are studied in this work. 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. 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. 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.
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. 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. It belongs on the bookshelves of university libraries, research institutes, and industrial labs and research facilities. A general procedure is proposed for reflectarray antenna designs. The cloudsat antenna design is included as a point of reference.
New coverage of microstrip antennas provides information essential to a wide variety of practical designs of rectangular and circular patches, including computer programs. An antenna system is the antenna and everything else between the antenna and the radio. A reflectarray antenna or just reflectarray consists of an array of unit cells, illuminated by a feeding antenna source of electromagnetic waves. In a recent study, it was shown that the calculated radiation pattern using this approach shows a good agreement with fullwave simulations 5. The authors describe, in detail, design procedures for a wide range of applications, including broadband, multiband, multibeam, contourbeam, beamscanning, and conformal reflectarray antennas. Reflectarray antennas john huang, jose antonio encinar. A major drawback of reflectarray antennas is that phase compensation needs to be done for the noncentered patches.
This wave now gets reflected as collimated wave front, as discussed previously. 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. Experimental demonstration of a waveguide reflectarray. Reflectarray antennas by payam nayeri overdrive rakuten. A modern form of reflective array is the bow tie uhf television antenna. Microstrip reflectarray antenna for the scanscat radar. Vhf examples are generally large and resemble a highway billboard, so. Other readers will always be interested in your opinion. Radiation analysis and characteristics of conformal. Reflectarray antennas analysis design fabrication and.
There is an explosion of available books and articles on the subject of antennae and antenna systems. 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. The proposed unit element is composed of a concentric, multiresonance circularring. An enabling technology for nasas dualfrequency ace radar paul e. Reflectarray antennas wiley online books wiley online library. Further, a method for the mirror surface is described to become wide band.
The reflectarray is a novel type of highgain antennas, which combines some of. Semantic scholar extracted view of reflectarray antennas. Both authors are well respected practitioners who have build these antennas and developed. The operating principle of a reflectarray antennasee fig. A wideband reflectarray antenna consisting of single. 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.
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. This example has two dipole driven elements in front of a grill reflector. An enhanced reflectarray ra antenna built of elements with reduced reflection phase sensitivity is presented. Theory, designs and applications payam nayeri, fan yang, atef.
What is the best book regarding antenna systems excluding. It illustrates the advantages of the reflectorreflectarray design in terms of performance and swap. 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. Like paraboloidal reflectors, it is fed by a lowdirectivity feed radiator located at a focal point. Throughout the book numerous illustrative design examples including numerical and experimental results are provided. It illustrates the advantages of the reflector reflectarray design in terms of performance and swap. Jones l and manassero g automated synthesis of a fixed. Configuration of reflectarray antenna in 2d and 3d view 1. In this paper, the broadband conditions of a reflectarray antenna will be shown using aberration theory. Reflectarray antennas download ebook pdf, epub, tuebl, mobi. Reflectarray antennas by payam nayeri, 9781118846766, available at book depository with free delivery worldwide. An overview of the reflectarray antenna research history, including various implementations and stateoftheart. Introduction to reflectarray antennas reflectarray.
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. This book begins with introductory material on reflectarray antennas and progresses to the presentation of stateoftheart research in the field. The unit cells are usually backed by a ground plane, and the incident wave reflects off them towards the direction of the beam. In this video, i have developed a matlab gui for designing the reflectarray antenna. 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. This leads to rules of thumb for reflectarray antenna designs. Reflectarray pattern optimization for advanced wireless. It means that, the waves come out of the focal point and strike the paraboloidal reflector. 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. 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. A study of the broadband characteristic of reflectarray.
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. Table 2 compares several different antenna design approaches. The latest resource for the study of antenna theory. Both authors are well respected practitioners who have build these. A framework for the design and optimization of large duallinear polarized, shapedbeam reflectarrays for advanced wireless communications is presented. Advanced design methodologies and novel applications of reflectarray. 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. In a discipline that has experienced vast technological changes, this text offers the most recent look at all the necessary topics. This book introduces the fundamental principles of antenna theory and explains how to apply them to the analysis, design, and measurements of antennas. 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. By using aberration theory, the mechanism of the frequency characteristics of the beam shift and gain reduction will be clarified. 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.
Both authors are well respected practitioners who have build these antennas and developed them for space flight. The reflectarray is a novel type of highgain antennas, which combines some of favorable features of reflectors and arrays. They provide sufficient coverage of basic reflectarray theory to. Oct 11, 2019 distinguished lecture on reflectarray antennas. Introduction to reflectarray antennas reflectarray antennas.
Unlike the conventional paraboloidal reflector it is a flat structure, and can consist of a structure. 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. 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. However, over the past two decades the reflectarray antenna 1,2 has emerged as an alternative. Reflectarray antenna design using matlab and cst part 1. Reflectarray antennas theory, designs, and applications. New coverage of microstrip antennas provides information essential to a wide variety of practical designs of rectangular and circular.
Novel photonicallycontrolled reflectarray antenna, ieee. The distance travelled by the radiated waves to the noncentered patches is more as compared to the center patch 12. 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. These are preliminary notes, intended only for distribution among the participants. 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. This approach greatly facilitates understanding of the working of the reflectarray antenna, and provides an intuitive explanation for the reflectarray behavior. The reflectarray element is characterized in a unit cell. They are often used in the vhf and uhf frequency bands. A direct comparison with conventional reflector antennas is provided, focusing on conventional efficiency figures of reflectors. This paper presents the concept of reflectarray in a novel way, utilizing a graphical visualization tool. Ictpituursi school on wireless networking for development the abdus salam international centre for theoretical physics ictp, trieste italy, 5 to 24 february 2007.
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