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Theory of Linear and nonlinear circuits - Engberg J.

Theory of Linear and nonlinear circuits

Author: Engberg J.
Publishers: Wiley & sons
Year of publication: 1995
Number of pages: 154
ISBN 0-47-94825
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Download: noisetheoryoflinearandnonlinear1995.pdf

Noise Theory
Linear and Nonlinear Circuits
J ENGBERG T LARSEN
Copyright -сГ 1095 by John Wiley & Sons Ltd.
Saffins Lane, Chichester West Sussex РОЮ lUD. England
Telephone Notional Chichester (01243) 779777 International ( + 44) 124 3 779777
Reprinted Juiv 1995, Julv 19%
All rights reserved.
No part of this publication may be reproduced by any means, or transmitted, or translated into a machine language without the written permission of the publisher.
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Library of Congress Cataloging-in-Publication Data
Engberg, J. (Jakob). 1936-
Noise theory of linear and nonlinear circuits Engberg, T. Larsen.
p. cm.
Includes bibliographical references and index.
ISBN 0 471 94825 X :
1. Electronic noise. 2. Electronic circuits. I. Larsen, T.
(Torbenl П. Title.
TK78S7.5.E54 1995
621.382'24—dc20 94-39501
CIP
British Library Cataloguing in Publication Data
A catalogue record tor this book is available from the British Library ISBN 0 471 94(325 \
Produced from camera-ready copy supplied by the author using LaTeX software. Printed and bound in Great Britain by Bookcraft (Bath) Ltd.
Contents
Preface ix
I Linear systems 1
1 Some milestones in the development of noise theory 3
1.1 Johnson Noise........................................................... 3
1.2 Receiver noise.......................................................... 5
1.3 Linear two- and multi-ports............................................. 5
1.4 References.............................................................. 6
2 Noise in one-ports 9
2.1 Thermal noise........................................................... 9
2.2 Definitions of noise quantities......................................... 11
2.2.1 The equivalent noise resistance................................ 11
2.2.2 The equivalent noise conductance............................... 12
2.2.3 The extended noise temperature................................. 13
2.3 Calculation with noise quantities...................................... 14
2.3.1 Series and parallel connections of one-ports characterized by
equivalent noise resistances and conductances................... 14
2.3.2 Series and parallel connections of one-ports characterized by
extended noise temperatures .................................... 13
2.4 References.............................................................. 17
3 Noise characteristics of multi-ports 19
3.1 Power gains............................................................. 19
3.2 uennitions ol noise quantities.......................................... 21
3.2.1 The effective noise temperature................................ 21
o.2.'2 The noise factor .............................................. 2-5
3.2.3 The operating noise temperature................................ 2;
3.3 Дуегяде пуке quantities and the hamlv.-iilth........................ 3-
3.3.1 The average effective noise temperature........................ 33
3.3.2 The average noise factor....................................... 34
s
vi Contents
3.3.3 The average operating noise temperature ........................ 35
3.3.4 The equivalent noise bandwidth.................................. 36
.3.4 Discussion of noise quantities........................................ 38
3.5 References............................................................. 39
4 Noise parameters 41
4.1 Noise voltages and currents........................................... 41
4.1.1 The equivalent noise two-port................................... 41
4.1.'2 Y and Z noise parameters........................................ 45
4.2 Noise power waves..................................................... 5Q
4.2.1 The extended effective noise temperature........................ 52
4.2.2 T noise parameters.............................................. 55
4.3 Transformations between sets of noise parameters...................... 61
4.3.1 Transformation formulae......................................... 62
4.4 References............................................................ 70
5 Noise measure and graphic representations 71
5.1 Two-ports in cascade.................................................. 71
5.2 The noise measure..................................................... 74
5.3 Graphic representation in the admittance plane........................ 79
5.3.1 Graphic representation of the exchangeable power gain .... 80
5.3.2 Graphic representation of the extended noise measure .... 81
5.4 Graphic representation in the reflection plane........................ 85
5.4.1 Graphic representation of the exchangeable power gain .... 8S
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