Titlebook: Amplifiers in Radio Receivers; Characteristics, Ope Sergey Viktorovich Dvornikov,Alexander Fedotovich Book 2022 The Editor(s) (if applicab

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Noise Ratio in Receivers,Fluctuation noise acting in receiver circuits can be external or internal in origin. The former include cosmic noises, atmospheric noises, quantum noises of the signal and background illumination, and the latter include the EMF and currents arising in the receiver elements due to the chaotic movement of various carriers of electric charges.

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Schemical Basics of Input Circuits and Selective Amplifiers, of a radio receiver is a set of elements, located between the antenna and the input of the first stage of the receiver.

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Multistage Single-Circuit Selective Amplifiers,A multistage resonant amplifier is a series of identical resonant stages connected in series.

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Frequency Converters,A frequency converter in radio receivers is a device that transfers the spectrum of a radio signal from one region of the frequency range to another. In this case, the type and parameters of modulation of the converted signal remain unchanged.

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Digital Radio Devices,With the development of discrete microelectronics and the expansion of the functionality of digital computing technology, digital signal processing began to be widely introduced in radio receivers.

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,Die Bewegung der Luft in Folge Erw?rmung,nal energy lost in the oscillatory system. To carry out the regeneration, a negative damping must be introduced into the resonator, which is tuned to the signal frequency, in one way or another. We will assume that negative damping is introduced into the resonator by some two-terminal device with ne