Half-wave dipole may be modeled by a sinusoidal current on a very thin wire, as

For most purposes here, especially when theĭetail of the fields very near the dipole conductor are not of interest, the

Investigated most often, approximate solutions are satisfactory.Īppendix A presents the FORTRAN code based on for computing the currents on, and the fields close to (within a wire diameter), dipoles and helicalĭipoles having finite thickness. One of finite wire thickness, is inordinately complex and has been extensively The solution to the radiation problem of the half-wave dipole, particularly Expressions (1.26) to (1.28) are valid only in the region sufficientlyįar (r > dl ) from the region of the current source I. This is the case of the ideal (uniform current) infinitesimal dipole. Similarly, from (1.25) inserted into (1.15), the magnetic field isĮquations (1.26) to (1.28) describe a particularly complex field behaviorįor what is a very idealized selection of sources: a simple current element I of Polarization Scattering and the Radar EquationĮxtremely Low and Very Low Frequencies (> dl, are Polarization Filtering: An Experiment in Optics Summary of Transmission Line Relationships Minimum Attenuation in Transmission Lines Measured and Calculated Patterns Involving CylindricalĮffect of Antenna Distortion on Coverage Range Treating Scatterers as Infinitely Long Cylinders Pattern Shaping of High-Gain Collinear Antennas Radiowave Propagation and Antennas for Personal CommunicationsĬollinear Antennas and Vertical-Plane Pattern Controlĭirectivity and Beam Width for OmnidirectionalĪperture Antennas: Two-Dimensional Transforms Radiation of a UWB Elementary Dipole and Loop Radiation from a Sinusoidally Excited Current Element To my family for their support and guidance, Use ofĪ term in this book should not be regarded as affecting the validity of any trademark or service Artech House cannot attest to the accuracy of this information. No part of this book mayīe reproduced or utilized in any form or by any means, electronic or mechanical, including photocopying, recording, or by any information storage and retrieval system, without permission inĪll terms mentioned in this book that are known to be trademarks or service marks have beenĪppropriately capitalized. Printed and bound in the United States of America. Library of Congress Cataloging-in-Publication DataĪ catalog record of this book is available from the Library of Congress.īritish Library Cataloguing in Publication DataĪ catalogue record of this book is available at the British Library.Īll rights reserved. For a complete listing of the Artech House Mobile Communications Library,

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