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Radio Receiver Technology: Principles, Architectures and Applications



Radio Receiver Technology: Principles, Architectures and Applications

Ralf Rudersdorfer

ISBN: 978-1-118-50320-1 February 2014 320 Pages

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Written by an expert in the field, this book covers the principles, architectures, applications, specifications and characterizations of radio receivers 

In this book, the author introduces the reader to the basic principles and theories of present-day communications receiver technology. The first section of the book presents realization concepts at the system level, taking into consideration the various types of users. Details of the circuitry are described providing the reader with an understanding of fully digitized radio receivers, offering an insight into the state-of-the-art. 

The remaining sections address radio receivers, particularly as two-port devices. Furthermore, the author outlines the fields of applications (with sample calculations and with reference to practical work) and their features and considers also the specialty of high-quality radio receivers. As can be seen from the multitude of terrestrial applications described in Part II, they are typically used for radio surveillance, signal intelligence, modern radio bearing and at the classical radio services. Parts III and IV describe the entire range of parameters that are useful for the characterization of these receivers. The description starts from the physical effect, or the explanation of the individual parameter, and then proceeds to the measuring technique for determining the parameters, highlighting problems, followed by explanatory notes with applicatory relevance. The measuring procedures described are the result of experiences gained in extended laboratory work and practical testing. With the model shown in Part IV, used for the operational evaluation detailing the intrinsic small range of interpretation, the book covers untreated research in the field. The Appendix provides among others valuable information about the dimensioning of receiving systems and the mathematical derivation of non-linear effects and as well as a useful method for converting different level specifications. 

Key Features: 

  • Introduces the basic principles and theories of present-day technology
  • Discusses concepts at system level (aligned to the various types of users)
  • Addresses (fully) digitized radio receivers focusing on the state-of-the-art
  • Close contacts to the industry were utilized to show background information
  • Enables the reader to comprehend and evaluate the characteristic features and the performance of such systems
  • Examines the entire range of parameters that are characteristic of the technology including the physical effect and measuring   techniques
  • Includes results of experiences gained in extended laboratory work and practical testing with examples
  • Provides a uniform and systematic approach for ease of understanding e.g. many didactic figures for the visual illustration have been newly created as well as complete real-world examples

This book will be an excellent resource to understand the principles of work, for professionals developing and testing radio receivers, for receiver users (e.g. at regulatory agencies, surveillance centers, secret services, classical radio communications services), technicians, engineers and technicians who work with RF-measurement instruments, postgraduate students studying in the field and university lecturers. Chartered radio amateurs and handlers/operators will also find this book insightful. Due to high level of detail, it also serves as a reference. By using the carefully edited alphabetical index with over 1,200 entries, the appropriate explanations can be found quickly in the text.

About the Author xi

Preface xiii

Acknowledgements xv

I Functional Principle of Radio Receivers 1

I.1 Some History to Start 1

I.2 Present-Day Concepts 4

I.3 Practical Example of an (All-)Digital Radio Receiver 23

I.4 Practical Example of a Portable Wideband Radio Receiver 39

References 46

Further Reading 48

II Fields of Use and Applications of Radio Receivers 49

II.1 Prologue 49

II.2 Wireless Telecontrol 50

II.3 Non-Public Radio Services 54

II.4 Radio Intelligence, Radio Surveillance 64

II.5 Direction Finding and Radio Localization 83

II.6 Terrestrial Radio Broadcast Reception 101

II.7 Time Signal Reception 104

II.8 Modern Radio Frequency Usage and Frequency Economy 107

References 109

Further Reading 112

III Receiver Characteristics and their Measurement 113

III.1 Objectives and Benefits 113

III.2 Preparations for Metrological Investigations 114

III.3 Receiver Input Matching and Input Impedance 118

III.4 Sensitivity 121

III.5 Spurious Reception 147

III.6 Near Selectivity 156

III.7 Reciprocal Mixing 162

III.8 Blocking 171

III.9 Intermodulation 174

III.10 Cross-Modulation 199

III.11 Quality Factor of Selective RF Preselectors under Operating Conditions 204

III.12 Large-Signal Behaviour in General 209

III.13 Audio Reproduction Properties 213

III.14 Behaviour of the Automatic Gain Control (AGC) 218

III.15 Long-Term Frequency Stability 223

III.16 Characteristics of the Noise Squelch 226

III.17 Receiver Stray Radiation 227

III.18 (Relative) Receive Signal Strength and S Units 230

III.19 AM Suppression in the F3E Receiving Path 236

III.20 Scanning Speed in Search Mode 238

References 240

Further Reading 242

IV Practical Evaluation of Radio Receivers (A Model) 245

IV.1 Factual Situation 245

IV.2 Objective Evaluation of Characteristics in Practical Operation 245

IV.3 Information Gained in Practical Operation 249

IV.4 Interpretation (and Contents of the ‘Table of operational PRACTICE’) 253

IV.5 Specific Equipment Details 255

References 255

Further Reading 255

V Concluding Information 257

V.1 Cascade of Noisy Two-Ports (Overall Noise Performance) 257

V.2 Cascade of Intermodulating Two-Ports (Overall Intermodulation Performance) 260

V.3 Mathematical Description of the Intermodulation Formation 264

V.4 Mixing and Derivation of Spurious Reception 269

V.5 Characteristics of Emission Classes According to the ITU RR 272

V.6 Geographic Division of the Earth by Region According to ITU RR 272

V.7 Conversion of dB. . . Levels 272

References 278

Further Reading 279

List of Tables 281

Index 283