Fagot / Magne / Fry Frequency Modulation Theory

Application to Microwave Links
1. Auflage 2014
ISBN: 978-1-4832-7853-7
Verlag: Elsevier Science & Techn.
Format: PDF
Kopierschutz: 1 - PDF Watermark

E-Book, Englisch, 500 Seiten, Web PDF

Electronics and Instrumentation, Volume 11: Frequency Modulation Theory: Application to Microwave Links provides information pertinent to the fundamental aspects of microwave beam techniques. This book discusses the development in the application of frequency modulation. Organized into five chapters, this volume begins with an overview of the transfer of the radio-frequency energy over a given path. This text then examines all the general problems of frequency modulation, including principle, band covered, distortion, and improvement of the signal-to-noise ratio. Other chapters deal with propagation distortion that is apparent in a variable-velocity guided transmission channel. This book discusses as well the complete problem of telephony and television transmission over radio links and considers the requisite conditions for meeting the international standards. The final chapter deals with all the applied techniques concerned with radio link equipment that deals with a large number of general problems. This book is a valuable resource for students and engineers.

Autoren/Hrsg.

Fagot, Jacques

Magne, Philippe

Fry, D. W.

Higinbotham, W.

Inhaltsverzeichnis

1;Front Cover;1
2;Frequency Modulaton Theory: Application to Microwave Links;4
3;Copyright Page;5
4;Table of Contents;6
5;FOREWORD;8
6;INTRODUCTION;10
7;CHAPTER 1. PROPAGATION — ENERGY TRANSFER;14
7.1;1.1 Definition of the transmission equivalent;14
7.2;1.2 Propagation of the carrier wave in free space — Calculation of the transmission equivalent between aerials;15
7.3;1.3 Propagation in the atmosphere and near the ground;20
7.4;1.4 Atmospheric absorption;22
7.5;1.5 Atmospheric refraction;23
7.6;1.6 Fresnel ellipsoid;30
7.7;1.7 Profile representation;34
7.8;1.8 Ground reflections;37
7.9;1.9 Attenuation by a hill-crest of the "knife edge" type;53
7.10;1.10 Conclusions regarding the installation of radio links over an optical path;55
7.11;1.11 Tropospheric propagation beyond the horizon;65
7.12;References;80
8;CHAPTER 2. DISTORTION AND NOISE IN FREQUENCY MODULATION;82
8.1;2.1 Principle of frequency modulation;82
8.2;2.2 Spectrum of a sinusoidally frequency-modulated oscillation;85
8.3;2.3 Non-linear distortions in frequency modulation;88
8.4;2.4 Analysis of amplitude distortion;94
8.5;2.5 Analysis of phase distortion;97
8.6;2.6 Application of general network laws for the evaluation of phase distortion in amplifiers;104
8.7;2.7 Phase distortion in an amplifier consisting of a series of triplets;115
8.8;2.8 Noise in frequency modulation;125
8.9;2.9 Method of direct calculation of non-linear distortion in frequency modulation;131
8.10;References;131
9;CHAPTER 3. PROPAGATION DISTORTION;134
9.1;3.1 Signal expressed by the Fourier integral;134
9.2;3.2 Localization of the information by the stationary phase principle;134
9.3;3.3 Phase velocity and group velocity of a travelling wave;138
9.4;3.4 Wave propagation along a double path;142
9.5;3.5 Distortion in frequency modulation for the double path case;145
9.6;3.6 Transmission on a mismatched feeder;147
9.7;3.7 Frequency modulation distortion in a mismatched feeder;154
9.8;3.8 Direct calculation of frequency modulation distortion over a double path;156
9.9;References;164
10;CHAPTER 4. TRANSMISSION OF THE OVERALL INFORMATION;166
10.1;4.1 General;166
10.2;4.2 Frequency distribution in carrier current multiplex;167
10.3;4.3 Problem of levels in carrier current multiplex;169
10.4;4.4 Application of multiplex signals to frequency modulation radio equipment;174
10.5;4.5 Formulae related to thermal noise;179
10.6;4.6 Overall cross-talk power in amplitude modulation;192
10.7;4.7 Intermodulation distribution in the base-band;197
10.8;4.8 Combination of intermodulation in the various elements of a microwave link;202
10.9;4.9 The multiplex signal considered as a stationary random function— Application to the calculation of the intermodulation spectrum;205
10.10;4.10 Intermodulation in frequency modulation equipment;214
10.11;4.11 Propagation cross-talk;219
10.12;4.12 Transmission conditions for television signals;225
10.13;4.13 Principal technical problems raised by the transmission of television on microwave links;233
10.14;References;247
11;CHAPTER 5. EQUIPMENT;248
11.1;5.1 Design of radio link equipment;248
11.2;5.2 Structure of microwave links;249
11.3;5.3 Highly linear modulation and demodulation—General remarks;274
11.4;5.4 Frequency modulation of the U.H.F. band;276
11.5;5.5 Frequency modulators operating in the "intermediate frequency" band;299
11.6;5.6 Demodulation;326
11.7;5.7 Amplification technique — General remarks;350
11.8;5.8 Noise figure;351
11.9;5.9 Amplifier pass-band and gain;389
11.10;5.10 Impedance breaks between elements of an amplifier chain;413
11.11;5.11 Phase distortion correction—Group propagation time equalizers;429
11.12;5.12 Frequency changing—Mixers;447
11.13;5.13 Frequency stabilization;462
11.14;5.14 Filters for hyper-frequencies;468
11.15;5.15 Aerials;490
11.16;5.16 Ferrite unidirectional attenuator (isolator);496
11.17;5.17 Measurements;498
11.18;References;514
11.19;NOTATIONS;517
11.20;ABBREVIATIONS;521
12;INDEX;523