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.

Written by an expert in the field, this book covers theprinciples, architectures, applications, specifications andcharacterizations of radio receiversIn this book, the author introduces the reader to the basicprinciples and theories of present-day communications receivertechnology. The first section of the book presents realizationconcepts at the system level, taking into consideration the varioustypes of users. Details of the circuitry are described providingthe reader with an understanding of fully digitized radioreceivers, offering an insight into the state-of-the-art.The remaining sections address radio receivers, particularly astwo-port devices. Furthermore, the author outlines the fields ofapplications (with sample calculations and with reference topractical work) and their features and considers also the specialtyof high-quality radio receivers. As can be seen from the multitudeof terrestrial applications described in Part II, they aretypically used for radio surveillance, signal intelligence, modernradio bearing and at the classical radio services. Parts III and IVdescribe the entire range of parameters that are useful for thecharacterization of these receivers. The description starts fromthe physical effect, or the explanation of the individualparameter, and then proceeds to the measuring technique fordetermining the parameters, highlighting problems, followed byexplanatory notes with applicatory relevance. The measuringprocedures described are the result of experiences gained inextended laboratory work and practical testing. With the modelshown in Part IV, used for the operational evaluation detailing theintrinsic small range of interpretation, the book covers untreatedresearch in the field. The Appendix provides among others valuableinformation about the dimensioning of receiving systems and themathematical derivation of non-linear effects and as well as auseful method for converting different levelspecifications.Key Features:* Introduces the basic principles and theories of present-daytechnology* Discusses concepts at system level (aligned to the varioustypes of users)* Addresses (fully) digitized radio receivers focusing on thestate-of-the-art* Close contacts to the industry were utilized to show backgroundinformation* Enables the reader to comprehend and evaluate thecharacteristic features and the performance of such systems* Examines the entire range of parameters that are characteristicof the technology including the physical effect and measuringtechniques* Includes results of experiences gained in extended laboratorywork and practical testing with examples* Provides a uniform and systematic approach for ease ofunderstanding e.g. many didactic figures for the visualillustration have been newly created as well as complete real-worldexamplesThis book will be an excellent resource to understand theprinciples of work, for professionals developing and testing radioreceivers, for receiver users (e.g. at regulatory agenciessurveillance centers, secret services, classical radiocommunications services), technicians, engineers and technicianswho work with RF-measurement instruments, postgraduate studentsstudying in the field and university lecturers. Chartered radioamateurs and handlers/operators will also find this bookinsightful. Due to high level of detail, it also serves as areference. By using the carefully edited alphabetical index withover 1,200 entries, the appropriate explanations can be foundquickly in the text.

About the Author xiPreface xiiiAcknowledgements xvI Functional Principle of Radio Receivers 1I.1 Some History to Start 1I.2 Present-Day Concepts 4I.3 Practical Example of an (All-)Digital Radio Receiver 23I.4 Practical Example of a Portable Wideband Radio Receiver39References 46Further Reading 48II Fields of Use and Applications of Radio Receivers49II.1 Prologue 49II.2 Wireless Telecontrol 50II.3 Non-Public Radio Services 54II.4 Radio Intelligence, Radio Surveillance 64II.5 Direction Finding and Radio Localization 83II.6 Terrestrial Radio Broadcast Reception 101II.7 Time Signal Reception 104II.8 Modern Radio Frequency Usage and Frequency Economy 107References 109Further Reading 112III Receiver Characteristics and their Measurement113III.1 Objectives and Benefits 113III.2 Preparations for Metrological Investigations 114III.3 Receiver Input Matching and Input Impedance 118III.4 Sensitivity 121III.5 Spurious Reception 147III.6 Near Selectivity 156III.7 Reciprocal Mixing 162III.8 Blocking 171III.9 Intermodulation 174III.10 Cross-Modulation 199III.11 Quality Factor of Selective RF Preselectors underOperating Conditions 204III.12 Large-Signal Behaviour in General 209III.13 Audio Reproduction Properties 213III.14 Behaviour of the Automatic Gain Control (AGC) 218III.15 Long-Term Frequency Stability 223III.16 Characteristics of the Noise Squelch 226III.17 Receiver Stray Radiation 227III.18 (Relative) Receive Signal Strength and S Units 230III.19 AM Suppression in the F3E Receiving Path 236III.20 Scanning Speed in Search Mode 238References 240Further Reading 242IV Practical Evaluation of Radio Receivers (A Model)245IV.1 Factual Situation 245IV.2 Objective Evaluation of Characteristics in PracticalOperation 245IV.3 Information Gained in Practical Operation 249IV.4 Interpretation (and Contents of the 'Table ofoperational PRACTICE') 253IV.5 Specific Equipment Details 255References 255Further Reading 255V Concluding Information 257V.1 Cascade of Noisy Two-Ports (Overall Noise Performance)257V.2 Cascade of Intermodulating Two-Ports (OverallIntermodulation Performance) 260V.3 Mathematical Description of the Intermodulation Formation264V.4 Mixing and Derivation of Spurious Reception 269V.5 Characteristics of Emission Classes According to the ITU RR272V.6 Geographic Division of the Earth by Region According to ITURR 272V.7 Conversion of dB. . . Levels 272References 278Further Reading 279List of Tables 281Index 283