Download or read book Application of Wedge Diffraction to Antenna Theory written by R. C. Rudduck and published by . This book was released on 1966 with total page 76 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Aperture Antennas and Diffraction Theory written by Edward V. Jull and published by IET. This book was released on 1981 with total page 194 pages. Available in PDF, EPUB and Kindle. Book excerpt: Two alternative methods of aperture antenna analysis are described in this book.
Download or read book NASA Technical Note written by and published by . This book was released on 1969 with total page 438 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Antenna Theory and Design written by Warren L. Stutzman and published by John Wiley & Sons. This book was released on 2012-05-22 with total page 848 pages. Available in PDF, EPUB and Kindle. Book excerpt: Stutzman's 3rd edition of Antenna Theory and Design provides a more pedagogical approach with a greater emphasis on computational methods. New features include additional modern material to make the text more exciting and relevant to practicing engineers; new chapters on systems, low-profile elements and base station antennas; organizational changes to improve understanding; more details to selected important topics such as microstrip antennas and arrays; and expanded measurements topic.
Download or read book Diffraction Theory and Antennas written by Richard Henry Clarke and published by . This book was released on 1980 with total page 300 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book NASA Technical Report written by and published by . This book was released on 1970 with total page 1096 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Antenna Theory and Microstrip Antennas written by D. G. Fang and published by CRC Press. This book was released on 2017-12-19 with total page 439 pages. Available in PDF, EPUB and Kindle. Book excerpt: Antenna Theory and Microstrip Antennas offers a uniquely balanced analysis of antenna fundamentals and microstrip antennas. Concise and readable, it provides theoretical background, application materials, and details of recent progress. Exploring several effective design approaches, this book covers a wide scope, making it an ideal hands-on resource for professionals seeking a refresher in the fundamentals. It also provides the basic grounding in antenna essentials that is required for those new to the field. The book’s primary focus is on introducing practical techniques that will enable users to make optimal use of powerful commercial software packages and computational electromagnetics used in full wave analysis and antenna design. Going beyond particular numerical computations to teach broader concepts, the author systematically presents the all-important spectral domain approach to analyzing microstrip structures including antennas. In addition to a discussion of near-field measurement and the high-frequency method, this book also covers: Elementary linear sources, including Huygen’s planar element, and analysis and synthesis of the discrete and continuous arrays formed by these elementary sources The digital beam-forming antenna and smart antenna Cavity mode theory and related issues, including the design of irregularly shaped patches and the analysis of mutual coupling Based on much of the author’s own internationally published research, and honed by his years of teaching experience, this text is designed to bring students, engineers, and technicians up to speed as efficiently as possible. This text purposefully emphasizes principles and includes carefully selected sample problems to ease the process of understanding the often intimidating area of antenna technology. Paying close attention to this text, you will be able to confid
Download or read book Radiation from Slots on Cylindrical Bodies Using Geometrical Theory of Diffraction and Creeping Wave Theory written by Constantine A. Balanis and published by . This book was released on 1970 with total page 84 pages. Available in PDF, EPUB and Kindle. Book excerpt: A hybrid solution employing wedge diffraction and creeping wave theories is used to compute the radiation patterns of axial and circumferential slots in the principal planes (equatorial and elevation) on conducting cylinders of finite and infinite lengths. The slots are excited by parallel-plate waveguides operating in the TEM and TE10 modes. For the equatorial-plane pattern, the total field in the lit region is obtained by the superposition of two fields, that is, the wedge-diffracted and the creeping-wave fields. The wedge-diffracted field is obtained by approximating the parallel-plate --cylinder geometry with two wedges, each formed by a wall of the waveguide and a tangent plane to the cylinder surface at the edge point. The creeping-wave contribution is obtained by the use of diffraction and propagation coefficients of waves traveling around conducting curved surfaces. The total field in the shadow region is obtained solely from the creeping-wave contribution. For the elevation-plane pattern, wedge diffraction techniques for the entire pattern are employed. The main advantages of the present technique are that it can be applied to geometries where modal solutions are not possible, in numerical ranges where the convergence properties of modal expansions are relatively poor, in parametric design problems since the contribution from each field is separated, and in the analysis of antenna with finite physical sizes.
Download or read book NASA Scientific and Technical Reports written by United States. National Aeronautics and Space Administration Scientific and Technical Information Division and published by . This book was released on 1967 with total page 2300 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Control of Electromagnetic Scattering by Antenna Impedance Loading written by Shi-chuan Lee and published by . This book was released on 1974 with total page 88 pages. Available in PDF, EPUB and Kindle. Book excerpt: The application of impedance loading techniques for the reduction of backscatter from radar targets were studied. The hybrid methods which combine the GTD and the moment method were used to analyze the backscattering from various geometries such as impedance loaded infinite wedge and a two-dimensional wing model. The effect of both the trailing and the leading edge was considered by using a two-dimensional wing model. The edge diffraction source can be considerably reduced over a 3:1 frequency band for the two-dimensional case. The square plate with a loaded slot was analyzed by a wire grid model. The backscatter reduction of the square plate can be achieved at least over a 2:1 frequency band.
Download or read book Monthly Catalog of United States Government Publications written by and published by . This book was released on 1966 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Government wide Index to Federal Research Development Reports written by and published by . This book was released on 1966 with total page 1576 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Modern Electromagnetic Scattering Theory with Applications written by Andrey V. Osipov and published by John Wiley & Sons. This book was released on 2017-01-31 with total page 1482 pages. Available in PDF, EPUB and Kindle. Book excerpt: This self-contained book gives fundamental knowledge about scattering and diffraction of electromagnetic waves and fills the gap between general electromagnetic theory courses and collections of engineering formulas. The book is a tutorial for advanced students learning the mathematics and physics of electromagnetic scattering and curious to know how engineering concepts and techniques relate to the foundations of electromagnetics
Download or read book Scientific and Technical Aerospace Reports written by and published by . This book was released on 1987 with total page 964 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Aperture Reflection Coefficient of a Parallel plate Waveguide by Wedge Diffraction Analysis written by R. C. Rudduck and published by . This book was released on 1967 with total page 52 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book On a Uniform Geometrical Theory of Diffraction Based Complex Source Beam Diffraction by a Curved Wedge with Applications to Reflector Antenna Analysis written by Youngchel Kim and published by . This book was released on 2009 with total page 213 pages. Available in PDF, EPUB and Kindle. Book excerpt: Abstract: A uniform geometrical theory of diffraction (UTD) solution is developed for describing the high frequency (HF) electromagnetic (EM) fields surrounding an arbitrarily curved, perfect electrically conducting (PEC) wedge, that is illuminated by a point source, in complex space, which generates a complex source beam (CSB). This solution is surprisingly found to be the same as the UTD solution obtained previously for PEC curved wedges illuminated by a real point source after it is analytically continued for dealing with CSB illumination; hence, it is defined here as the CSB-UTD for curved wedges. The solution for curved wedges is developed from canonical HF solutions for a straight wedge with planar faces. For a real point source, the canonical UTD solution is obtained via a simpler asymptotic HF based first order Pauli-Clemmow method (PCM) of steepest descent. However, a CSB field constitutes a complex wave, and the first order PCM is strictly not valid for solving the canonical wedge problem with CSB illumination. Hence, for complex waves, a different, less compact, first order asymptotic approximation, known as the Van der Waerden method (VWM) of steepest decent, needs to be employed. This first order VWM leads to a canonical wedge solution which may be viewed as an extended UTD (or EUTD) wedge solution for the CSB illumination, defined here as the CSB-EUTD solution, because it can be expressed as CSB-EUTD = CSB-UTD + C . However, C is found to be negligible for the wedge case; it is for this reason that a first order PCM based CSB-UTD remains accurate even though PCM is not strictly valid for this case. After having established the fact that the CSB-UTD solution for the canonical wedge is the same as if the canonical UTD wedge solution for a real source excitation is simply and directly analytically continued to deal with a complex source location (or a CSB), the CSB-UTD for the arbitrarily curved wedge can thus also be similarly developed by analytically continuing the corresponding UTD solution for the same curved wedge excited by a real point source, to now deal with the excitation by a point source in complex space (or CSB). The curved wedge CSB-UTD solution is employed to analyze the radiation from an offset parabolic reflector illuminated by a CSB. The CSB-UTD results for this reflector are compared with a numerical physical optics (PO) approach to illustrate the accuracy of the CSB-UTD. The CSB-UTD is extremely fast compared to the numerical PO method; also, the latter becomes increasingly time consuming with increase in frequency, whereas the CSB-UTD remains essentially independent of frequency. The complex points of surface reflection and edge diffraction on the complex extension of the reflector are computed here using a relatively fast and efficient procedure, thus making it very practical to trace complex rays with almost the same speed and efficiency as tracing real rays.
Download or read book Conformal Array Antenna Theory and Design written by Lars Josefsson and published by John Wiley & Sons. This book was released on 2006-02-10 with total page 512 pages. Available in PDF, EPUB and Kindle. Book excerpt: This is the first comprehensive treatment of conformal antenna arrays from an engineering perspective. While providing a thorough foundation in theory, the authors of this publication provide a wealth of hands-on instruction for practical analysis and design of conformal antenna arrays. Thus, you get the knowledge you need, alongside the practical know-how to design antennas that are integrated into such structures aircrafts or skyscrapers.
