文档介绍：ic Field Measurements
in the Near Field
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ic Field Measurements
in the Near Field
Hubert Trzaska
NOBLE
PUBLISHING
Noble Publishing Corporation
Atlanta
Library of Congress Cataloging-in-Publication Data
Trzaska, Hubert
ic field measurements in the near field / Hubert Trzaska
p. cm.
Includes index.
ISBN 10884932-10-X
1. ic fields-Measurement
T79 2001
'1'0287--dc21
00-068702
NOBLE
PUBLISHING
Copyright © 2001 by Noble Publishing Corporation.
All rights reserved. No part of this book may be reproduced in any form by any
means without prior written permission of the publisher.
Printed in the United States of America
ISBN 1-884932-10-X
Contents
Preface ix
Chapter 1 Introduction 1
Bibliography 10
Chapter 2 The Principles of Near-Field EMF
Measurements 13
An EMF generated by a system of currents 13
The far field and the near field 17
EMF from simple radiating structures 22
Bibliography 28
Chapter 3 EMF Measurement Methods 29
E, H and S measurement 30
Temperature rise measurements 36
Current measurements 41
Bibliography 45
Chapter 4 Electric Field Measurement 47
Field averaging by a measuring antenna 49
Influence of fields from beyond a probe
measuring band 52
Mutual interaction of hte measuring antenna
and the field source 64
Changes for the probe's directional pattern 69
The E-field parison 77
and conclusions 82
Bibliography 85
V1
Chapter 5 ic Field Measurement 87
Measuring antenna size 87
Frequency response of the ic field probe... 90
Directional pattern alternations 94
Accuracy of measurement versus distance of
the antenna to the source of radiation 98
The ic field probe with a loop working
above its self-resonant frequency 104
and conclusions 109
Bibliography 112
Chapter 6 Power Density Measurement 113
Power dens