Analogové modulace v telekomunikacích

Abstract

Analog modulation stood for the development of telecommunications during the twentieth century. In the framework of this bachelor thesis are theoretically processed basic types of analog modulation such as amplitude modulation, frequency modulation, phase modulation and multiple quadrature amplitude modulation and their usage in telecommunications. Practical part of the bachelor thesis is realized through measurements performed on learning system TIMS. These measurements dealing with the size of demodulated signal amplitude, depending on the size of change in the amplitude modulation signal in Zero Crossing Demodulator and Phase locked loop demodulator and the magnitude of demodulated signal amplitude, depending on the change in pulse width used in Zero crossing demodulator.