Download or read book A Novel Method of Calculating Far field Patterns of Large Aperture Antennas written by and published by . This book was released on 1986 with total page 42 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Scientific and Technical Aerospace Reports written by and published by . This book was released on 1995 with total page 692 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Computation of Scalar Far field Patterns of Large aperture Antennas written by Thomas A. O'Malley and published by . This book was released on 1976 with total page 26 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Scientific and Technical Information Output of the Langley Research Center for Calendar Year 1986 written by Langley Research Center. Research Information and Applications Division and published by . This book was released on 1987 with total page 270 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Upper bound Errors in Far field Antenna Parameters Determined from Planar Near field Measurements written by Arthur D. Yaghjian and published by . This book was released on 1975 with total page 122 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Efficient Computation of Reflector Antenna Aperture Distributions and Far Field Patterns written by and published by . This book was released on 1984 with total page 48 pages. Available in PDF, EPUB and Kindle. Book excerpt: A computationally efficient method is presented for calculating the aperture distribution and the far field pattern of a parabolic reflector with an off-axis array feed. Idealized, uncoupled array elements and realistic, mutually coupled, circular waveguide elements are considered. Ray optics are used to determine the scalar aperture field over a rectangular grid of aperture sampling points. Two alternatively methods for performing the aperture integration required for the pattern evaluation are compared: (a) based on summation of subapertures with constant amplitude/linear phase, and (b) based on the Fast Fourier Transform (FFT) and sampling theory. Patterns obtained with this method are compared with independency computed patterns that use other approaches. The range of validity of the aperture field integration method is discussed.
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 WAVE PROPAGATION AND ANTENNA ENGINEERING written by KUMAR, SANJAY and published by PHI Learning Pvt. Ltd.. This book was released on 2015-12-14 with total page 625 pages. Available in PDF, EPUB and Kindle. Book excerpt: The book is primarily designed to cater to the needs of undergraduate and postgraduate students of Electronics and Communication Engineering and allied branches. It also caters for fundamental requirements of professionals working on design and development of antenna and wave propagation related equipment either in research laboratories or industries or academic institutions elsewhere. The book has been written with intent to grasp the basic understanding of theoretical as well as practical aspects of electromagnetic wave propagation and antenna engineering. The text has been aptly scripted considering the requirements of average students who can easily grasp and comprehend the basics of wave propagation and radiation mechanism of varieties of antennas coupled with their critical functionalities, utilities, advantages/disadvantages without any external assistance of teachers or other reference books. The book broaches very well on practical methods of parametric measurements of antenna with right measuring test equipment and associated tools. The last chapter of the book is dedicated to advance technology adopted in design and development of modern antenna. Key features • A fairly large number of well labelled diagrams to provide practical understanding of the concepts. • The placement of numericals at appropriate places develops confidence among readers and enthuses them further to read in depth to crack any regular or competitive examinations. • Chapter summary highlights important points for quick recap and revision before examination. • Well-crafted multiple choice questions with answers at the end of each chapter to stimulate thought process and prepare better for viva-voce and competitive examinations. • Appropriate number of unsolved numerical problems with answers to improve problem solving skill of students.
Download or read book Antentop 01 2004 written by and published by AntenTop. This book was released on with total page 103 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Technology for Large Space Systems written by and published by . This book was released on 1986 with total page 304 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Advances in Near surface Seismology and Ground penetrating Radar Volume 15 written by Richard D. Miller and published by SEG Books. This book was released on 2010-01-11 with total page 513 pages. Available in PDF, EPUB and Kindle. Book excerpt: Advances in Near-surface Seismology and Ground-penetrating Radar (SEG Geophysical Developments Series No. 15) is a collection of original papers by renowned and respected authors from around the world. Technologies used in the application of near-surface seismology and ground-penetrating radar have seen significant advances in the last several years. Both methods have benefited from new processing tools, increased computer speeds, and an expanded variety of applications. This book, divided into four sections--"Reviews," "Methodology," "Integrative Approaches," and "Case Studies"--Captures the most significant cutting-edge issues in active areas of research, unveiling truly pertinent studies that address fundamental applied problems. This collection of manuscripts grew from a core group of papers presented at a post-convention workshop, "Advances in Near-surface Seismology and Ground-penetrating Radar," held during the 2009 SEG Annual Meeting in Houston, Texas. This is the first cooperative publication effort between the near-surface communities of SEG, AGU, and EEGS. It will appeal to a large and diverse audience that includes researchers and practitioners inside and outside the near-surface geophysics community. --Publisher description.
Download or read book Monthly Catalog of United States Government Publications written by and published by . This book was released on 1971 with total page 1388 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Novel Technologies for Microwave and Millimeter Wave Applications written by Jean-Fu Kiang and published by Springer Science & Business Media. This book was released on 2013-06-29 with total page 617 pages. Available in PDF, EPUB and Kindle. Book excerpt: Novel Technologies for Microwave and Millimeter-Wave Applications provides an overview of current research status in selected field, to facilitate a learning process from concepts to practices, from component design to system architecture, and from small scale to large scale. Each chapter focuses on a topic and is organized to be self-sufficient. Contents in each chapter include concise description of relevant background information, major issues, current trend and future challenges. Useful references are also listed for further reading. Novel Technologies for Microwave and Millimeter-Wave Applications is suitable as a textbook for senior or graduate courses in microwave engineering.
Download or read book Government reports annual index written by and published by . This book was released on 199? with total page 968 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Focal Arc Pattern Measurements written by Peter R. Franchi and published by . This book was released on 1992 with total page 11 pages. Available in PDF, EPUB and Kindle. Book excerpt: Problems exist with the measurement of large aperture antennas due to the far field requirement. This paper discusses a new method to measure a phased array at about 1/10 the normal far field. The basic idea involves focusing the test array, at probe, antenna a distance R away from the aperture, and then, measuring an antenna pattern by moving the probe antenna on a constant focal arc given by R cos(Theta). This arc minimizes phase aberrations due to defocusing error. To minimize the amplitude errors, the pattern of the probe antenna is carefully matched in order to compensate for the 1/R variation induced amplitude error. The application of this technique will enable arrays to be measured in anechoic chambers, allowing convenient classified testing, while avoiding the effects of weather, and will reduce the risks inherent in the high power testing on transmit. The results of a computer simulation is presented that characterizes the validity and limitations of the technique.
Download or read book Government Reports Annual Index Keyword A L written by and published by . This book was released on 1986 with total page 1164 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book A Novel Method to Correct Radiation Pattern Distortion of Conformal Antennas written by John D. Antonucci and published by . This book was released on 1987 with total page 47 pages. Available in PDF, EPUB and Kindle. Book excerpt:
