The data transmission is done basically in the form of audio frequency. First it is converted into electrical signals. Then the process of signal filtration is done. After the filtering process is completed this signal is amplified with the help of power amplifier and AF amplifier.
In this case, we also need a carrier wave. So, to produce the carrier wave the output of a high frequency oscillator is amplified. The modulation of the RF wave is done by checking the AF signal of the modulator. The wave which is modulated is amplified with the help of a power amplifier. The unwanted signals are filtered by using a line filter. Data transmission has some essential features. All these features are shown in the diagram below:
Essential features of data retrieval are also shown in
The modulated wave which is coming from the sender towards the receiver end is received by the antenna. From a lot of signals the original signal which is needed is selected and picked up by the line filter. At different places the amplification of the signal took place. Then a demodulator is used to find the audio frequency from the modulated wave. Again the AF signal is amplified before sending it into the power amplifier. Then the processing of this signal is done and the original data is recovered from the signal. Hence, this was the whole journey of the signal from the sender to receiver end.
