Analog Communication

notas simples e limpas para aprender a comunicação analógica.

Simple & clean notes to learn analog communication.It contain almost all important topics which are given below chapter wise.

Unit-I Different types of Signals

Different types of Signals

Fourier Transform

Fourier Transform Properties

Transform of Gate Signal

Impulse Function and Unit Step Function,

Fourier Transform Technique for Periodic Signal

Spectral Density of various types of signals

Spectra (Parseval’s Theorem)

Unit-II Modulation Techniques

Need and types of modulation techniques

Amplitude Modulation

Frequency Modulation

Modulation by Complex Signal

Low Level and High Level AM Modulators

Analog Modulation

Suppressed Carrier Generation

VSB Transmission and Application

Unit-III Angle Modulation

Frequency and Phase Modulation Frequency spectrum

NBFM and WBFM

Multiple frequencies FM

FM Modulators

FM Detector

Ratio Detector and PLL detectors

Unit-IV Radio Transmitters

AM transmitter

Trapezoidal Pattern and Carrier Shift

SSB Transmitters

FM transmitters

Block Diagram of Radio Receiver

AM Receiver

RF Receiver

Super-heterodyne Receiver

RF Amplifier

AVC and AFC

Unit-V Noise

Sources and types of noise and their power density

White Noise

Noise from Single and Multiple noise source for Linear Systems

Calculation of Noise Figure and Noise Temperature for Cascade Systems

Noise Performance of Communication System