FUNCTIONS OF A TRANSMITTER


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FUNCTIONS OF A TRANSMITTER
FUNCTIONS OF A TRANSMITTERA radio transmitter has several functions and one final objective. Briefly, the functions are (1) to generate an RF carrier wave; (2) to amplify the carrier wave; (3) to modulate the carrier wave with a sound wave, digital signal, or some other form of information; (4) to amplify the modulated signal, (5) to couple the modulated signal to an antenna; and (6) to radiate the signal into the atmosphere. All these functions except the last are performed by circuits within the transmitter system so that the final objective is accomplished. The radiation of the signal is accomplished by the antenna.A block diagram of a typical radio transmitter is shown in Fig. 14-17. …
Citation
Thomas K. Eismin: Aircraft Electricity and Electronics, Sixth Edition. FUNCTIONS OF A TRANSMITTER, Chapter (McGraw-Hill Professional, 2014), AccessEngineering Export