Amplifiers in Radio Receivers: Characteristics, Operating Principles, and Efficiency

Introduction
Contents
Abbreviations
1 Technical Characteristics and Structural Diagrams of Radio Receiving Devices
	1.1 General Information About Radio Receiving Devices
	1.2 Interference with Radio Reception
	1.3 Main Characteristics of Radio Receivers
		1.3.1 Receiver Specifications
		1.3.2 Operational and Technical Characteristics of Receivers
	1.4 Block Diagrams of Radio Receivers
	References
2 Noise Ratio in Receivers
	2.1 General Information on Fluctuation Noise in Receivers
	2.2 Sources of Noise in the Radio
		2.2.1 Resistor Noise
		2.2.2 Noise of Oscillatory Circuits
		2.2.3 Receiving Antenna Noise
		2.2.4 Noise of Active Elements of the Receiver
	2.3 Noise Figure and Noise Temperature of a Linear Quadrupole
	2.4 Noise Figure and Noise Temperature of a Multistage Circuit
	2.5 Radio Sensitivity
	References
3 Schemical Basics of Input Circuits and Selective Amplifiers
	3.1 Purpose and Basic Characteristics of Input Circuits and Selective Amplifiers
	3.2 Classification and Diagrams of Input Circuits and Selective Amplifiers
		3.2.1 Classification and Diagrams of Input Circuits of Various Ranges
		3.2.2 Classification and Circuits of Selective Amplifiers
		3.2.3 Lumped Selector Filters
	3.3 Generalized Equivalent Circuit of the Selective Amplifier and the Input Circuit
	References
4 Selective Amplifiers. Principles of Optimizing Their Parameters
	4.1 Gain and Amplifier Selectivity Characteristic
	4.2 Optimization of the Amplifier Gain
		4.2.1 Conditions for Obtaining the Maximum Gain of the Amplifier
		4.2.2 Features of Obtaining the Maximum Gain for a Given Bandwidth
	4.3 Noise Figure of a Resonant Amplifier With an Input Circuit
	4.4 Influence of Internal Feedback on the Properties of the Resonant Amplifier
		4.4.1 Brief Information About the Feedback in the Amplifier Stage
		4.4.2 Influence of the Internal Feedback of the Amplifier on Its Input Conductance
		4.4.3 Stability Factor and Stable Amplifier Gain
		4.4.4 Methods for Increasing the Stability of Selective Amplifiers
	References
5 Multistage Single-Circuit Selective Amplifiers
	5.1 Multistage Resonant Amplifier
	5.2 Broadband Selective Amplifiers
		5.2.1 Amplifiers with Twos of Detuned Stages
		5.2.2 Amplifiers with Triplets of Detuned Stages
		5.2.3 Comparative Assessment of Various Single-Loop Amplifier Circuits
	5.3 Characteristics of Transients in Linear Electoral Paths
	5.4 Transients in Single-Loop Multistage Amplifiers
		5.4.1 Resonant Amplifier
		5.4.2 Amplifier with Pairs of Detuned Stages
		5.4.3 Amplifier with Triplets of Detuned Stages
	References
6 Frequency Converters
	6.1 General Information About Frequency Converters
	6.2 Equivalent Circuit Parameters of the Frequency Converter
	6.3 Transistor Frequency Converters
	6.4 Diode Frequency Converters
	References
7 Low-Noise Amplifiers
	7.1 Regenerative Amplifiers
		7.1.1 General Information About Regenerative Amplifiers
		7.1.2 Regenerative Amplifier Gain
		7.1.3 Noise Characteristics of Regenerative Amplifiers
	7.2 Paramagnetic Amplifiers and Tunnel Diode Amplifiers
	7.3 Parametric Amplifiers
		7.3.1 General Information About Parametric Amplifiers
		7.3.2 Circuits and Design Features of Parametric Amplifiers
		7.3.3 Gain of a Dual-Circuit Reflective Parametric Amplifier
		7.3.4 Noise Temperature of a Two-Terminal Reflective Parametric Amplifier
	7.4 Transistor Amplifiers
	7.5 Comparative Evaluation of Low-Noise Amplifiers
	References
8 Radio Detectors
	8.1 Principle of Operation and Main Characteristics of Amplitude Detectors
	8.2 Diode Detectors. Detecting Strong Signals
	8.3 Transistor Detectors of Amplitude-Modulated Signals
	8.4 Pulse Signal Detectors
		8.4.1 Radio Pulse Diode Detectors
		8.4.2 Peak Pulse Detectors
	8.5 Amplitude Limiters
	8.6 Operating Principle and Basic Characteristics of Frequency Detectors
	8.7 Differential Frequency Detectors
	8.8 Operating Principle and Basic Characteristics of Phase Detectors
	8.9 Balance Phase Detector
	References
9 Radio Adjustments
	9.1 Purpose and Types of Regulations
	9.2 Main Structural Diagrams and Characteristics of Separate Elements of AFC Systems
	9.3 Analysis of the Linear Operation of the Chap System
	9.4 Operation of the Chap System at Large Distributions
	9.5 Linear PLL Operation
	9.6 PLL Operation at Large Distributions
	9.7 General Information About AGC Systems
	9.8 Structural Diagram of the AGC with Feedback and Characteristics of Its Separate Elements
	9.9 Analysis of the AGC System with Feedback
	References
10 Digital Radio Devices
	10.1 General Information on Digital Radio Receivers
	10.2 Analog–Digital Signal Conversion
	10.3 Digital Filters
	10.4 Digital Frequency Synthesizers
	10.5 Digital Demodulators
	10.6 Digital Systems of Automatic Regulations in the DRRD
	References