Author : Carl E. Baum
Publisher : CRC Press
Page : 164 pages
File Size : 43,68 MB
Release : 1990-10-01
Category : Science
ISBN : 9780891169864
This work covers the use of differential scaling for the synthesis of lenses which pass transient TEM waves without reflection, loss or distortion. The subject is also discussed in the context of differential-impendance-matching and transient-time conservation which extends the concepts to anisotropic media. Examples are given, which are useful in EMP simulations, pulse-power equipment, and transient (wide band) antennas in general.
Author : Joseph Shiloh
Publisher : Springer Science & Business Media
Page : 452 pages
File Size : 29,59 MB
Release : 1999-11-30
Category : Science
ISBN : 0306462060
Generation of High-Power Subnanosecond Pulses.- Fundamental Physical Considerations for Ultrafast Spark Gap Switching.- Novel source of Powerful Subnanosecond Microwave Pulses Based on Superradiance.- Demonstration of Sub-Millimeter Radiation Generation from Static Field by a Superluminous Ionization front in Semiconductor Capacitor Array.- About Mechanism of Wideband Microwave Radiation at Explosion of Condensed High Explosives.- Calorimetric Spectrometer for Measuring Single Microwave Pulses in Relativistic Microwave Electronics Devices.- Universal Sensor Using Electro-Optic Sensing Principl.
Author : Richard Holland
Publisher : CRC Press
Page : 436 pages
File Size : 34,35 MB
Release : 2020-09-10
Category : Science
ISBN : 1000158675
This book addresses the problem of treating interior responses of complex electronic enclosures or systems, and presents a probabilistic approach. Relationships for determining the statistics of the driving fields to apply to a circuit analysis code representing part of an enclosed system's writing are worked out. Also addressed are limited spatial and frequency coherence essential to a statistically based field drive model. This text gives examples, different modeling, and describes how to make, interchange, and optimize models.
Author : Daniel J. Hoppe
Publisher : CRC Press
Page : 262 pages
File Size : 18,82 MB
Release : 2018-10-08
Category : Technology & Engineering
ISBN : 1482227843
Electromagnetic scattering from complex objects has been an area of in-depth research for many years. A variety of solution methodologies have been developed and utilised for the solution of ever increasingly complex problems. Among these methodologies, the subject of impedance boundary conditions has interested the authors for some time. In short, impedance boundary conditions allow one to replace a complex structure with an appropriate impedance relationship between the electric and magnetic fields on the surface of the object. This simplifies the solution of the problem considerably, allowing one to ignore the complexity of the internal structure beneath the surface. This book examines impedance boundary conditions in electromagnetics. The introductory chapter provides a presentation of the role of the impedance boundary conditions in solving practical electromagnetic problems and some historical background. One of the main objectives of this book is to present a unified and thorough discussion of this important subject. A method based on a spectral domain approach is presented to derive the Higher Order Impedance Boundary Conditions (HOIBC). The method includes all of the existing approximate boundary conditions, such as the Standard Impedence Boundary Condition, the Tensor Impedence Boundary Condition and the Generalised Impedance Boundary Conditions, as special cases. The special domain approach is applicable to complex coatings and surface treatments as well as simple dielectric coatings. The spectral domain approach is employed to determine the appropriate boundary conditions for planar dielectric coatings, chiral coatings and corregated conductors. The accuracy of the proposal boundary conditions is discussed. The approach is then extended to include the effects of curvature and is applied to curved dielectric and chiral coatings. Numerical data is presented to critically assess the accuracy of the results obtained using various forms of the impedence boundary conditions. A number of appendices that provide more detail on some of the topics addressed in the main body of the book and a selective list of references directly related to the topics addressed in this book are also included.
Author : L. Carin
Publisher : Springer Science & Business Media
Page : 591 pages
File Size : 37,92 MB
Release : 2013-11-11
Category : Science
ISBN : 1489913947
The papers published in this volume were presented at the Second International Conference on Ultra-WidebandiShort-Pulse (UWB/SP) Electromagnetics, ApriIS-7, 1994. To place this second international conference in proper perspective with respect to the first conference held during October 8-10, 1992, at Polytechnic University, some background information is necessary. As we had hoped, the first conference struck a responsive cord, both in timeliness and relevance, among the electromagnetic community 1. Participants at the first conference already inquired whether and when a follow-up meeting was under consideration. The first concrete proposal in this direction was made a few months after the first conference by Prof. A. Terzuoli of the Air Force Institute of Technology (AFIT), Dayton, Ohio, who has been a strong advocate of time-domain methods and technologies. He initially proposed a follow-up time-domain workshop under AFIT auspices. Realizing that interest in this subject is lodged also at other Air Force installations, we suggested to enlarge the scope, and received in this endeavor the support of Dr. A. Nachman of AFOSR (Air Force Office of Scientific Research), Bolling Air Force Base, Washington, D.C.
Author : Joseph Besharse
Publisher : Academic Press
Page : 2352 pages
File Size : 49,22 MB
Release : 2010-05-27
Category : Science
ISBN : 012374203X
As the first comprehensive reference for the eye, its support structures, diseases, and treatments, Encyclopedia of the Eye is an important resource for all visual scientists, ophthalmologists, and optometrists, as well as researchers in immunology, infectious disease, cell biology, neurobiology and related disciplines. This four-volume reference is unique in its coverage of information on all tissues important for vision, including the retina, cornea and lens. It also covers the physiological and pathophysiologic processes that affect all eye tissues. This Encyclopedia is invaluable for graduate students and postdoctoral fellows who are seeking an introduction to an area of eye research. Each chapter explains the basic concepts and provides references to relevant chapters within the Encyclopedia and more detailed articles across the wider research literature. The Encyclopedia is also particularly useful for visual scientists and practitioners who are researching a new area, seeking deeper understanding of important research articles in fields adjacent to their own, or reviewing a grant outside their immediate area of expertise. Written by experts at a level that permits students to grasp key elements of a specific subject Provides an entryway into the major features of current eye research No other source puts this much information, so well-indexed and with so many helpful full color figures and graphics, in the hands of the ophthalmic scientist
Author : Dr. Sachin Bhagwat Umbarkar
Publisher : Notion Press
Page : 154 pages
File Size : 35,98 MB
Release : 2018-08-23
Category : Technology & Engineering
ISBN : 1643248278
Pulses with sub-nanoseconds / nanoseconds rise time are used in high power radar, sterilization, testing the effect on electronic systems, food irradiation, electromagnetic welding, forming, wastewater processing, defence, medical electronics, etc. There are various methods for obtaining the mentioned low rise time pulses. In this book, a Marx generator, peaking capacitor and peaking switch are used to obtain high amplitude low rise time pulse. A radiating antenna is then connected to the output of peaking stage. Such a system is known as the high-power electromagnetic (EM) impulse radiator. Two such EM radiators were mathematically analysed, simulated, designed, fabricated and the experiments have been conducted in this book.
Author : Carl E. Baumann
Publisher : Springer Science & Business Media
Page : 510 pages
File Size : 41,31 MB
Release : 2013-04-17
Category : Technology & Engineering
ISBN : 1475768966
The first two international conferences on Ultra-Wideband (UWB), Short-Pulse (SP) Electromagnetics were held at Polytechnic University, Brooklyn, New York in 1992 and 1994. Their purpose was to focus on advanced technologies for generating, radiating, and detecting UWB,SP signals, on mathematical methods, their propagation and scattering, and on current as well as potential future applications. The success of these two conferences led to the desirability of scheduling a third conference. Impetus was provided by the electromagnetics community and discussions led by Carl Baum and Larry Carin resulted in the suggestion that the UWB conferences be moved around, say to government laboratories such as Phillips Laboratory. Consequently the decision was made by the Permanent HPEM Committee to expand AMEREM '96 to include the Third Ultra-Wide Band, Short-Pulse (UWB,SP 3) with the Third Unexploded Ordnance Detec tion and Range Remediation Conference (UXO) and the HPEMINEM Conference in Albuquerque, New Mexico during the period May 27-31, 1996. Planning is now underway for EUROEM '98 in June, 1998 in Tel Aviv, Israel. Joseph Shiloh is the conference chairman. A fourth UWB,SP meeting is planned as a part of this conference and Ehud Heyman will coordinate this part of the meeting. The papers which appear in this volume, the third in the UWB,SP series, update subject areas from the earlier UWB,SP conferences. These topics include pulse generation and detection, antennas, pulse propagation, scattering theory, signal processing, broadband electronic systems, and buried targets.
Author : Gerald M. Cohen
Publisher : Taylor & Francis
Page : 488 pages
File Size : 27,14 MB
Release : 2022-07-30
Category : Medical
ISBN : 1000807932
First published in 1986: The purpose of this 2 volume set is to provide a valuable reference for established investigators and postgraduate students in toxicology.
Author : Paul D. Smith
Publisher : Springer Science & Business Media
Page : 734 pages
File Size : 11,80 MB
Release : 2007-05-08
Category : Technology & Engineering
ISBN : 0306479486
The fifth Conference on Ultra-Wideband Short-Pulse Electromagnetics was held in Scotland from 30 May to 2 June 2000 at the Edinburgh International Conference Centre. It formed part of the EUROEM 2000 International Conference under the chairmanship of David Parkes (DERA, Malvern) and Paul Smith (University of Dundee). It continued the series of international conferences that were held first at the Polytechnic University, Brooklyn, New York in 1992 and 1994, then in Albuquerque, New Mexico in 1996 (as part of AMEREM ’96) and more recently in Tel-Aviv, Israel in 1998 (as part of EUROEM ’98). The purpose of these meetings is to focus on advanced technologies for the generation, radiation and detection of ultra-wideband short pulse signals, taking into account their propagation, scattering from and coupling to targets of interest; to report on developments in supporting mathematical and numerical methods; and to describe current and potential future applications of the technology.
