![]() The phase of the output signal gets shifted depending upon the input. The binary 1s and 0s are called Mark and Space frequencies. The output of a FSK modulated wave is high in frequency for a binary HIGH input and is low in frequency for a binary LOW input. FSK is a scheme of frequency modulation.įollowing is the diagram for FSK modulated waveform along with its input. ![]() The frequency of the output signal will be either high or low, depending upon the input data applied.įrequency Shift Keying (FSK) is the digital modulation technique in which the frequency of the carrier signal varies according to the discrete digital changes. The binary signal when ASK is modulated, gives a zero value for LOW input and gives the carrier output for HIGH input. The amplitude of the resultant output depends upon the input data whether it should be a zero level or a variation of positive and negative, depending upon the carrier frequency.Īmplitude Shift Keying (ASK) is a type of Amplitude Modulation which represents the binary data in the form of variations in the amplitude of a signal.įollowing is the diagram for ASK modulated waveform along with its input.Īny modulated signal has a high frequency carrier. In this chapter, we will be discussing the most prominent digital modulation techniques. There are many types of digital modulation techniques and we can even use a combination of these techniques as well. Hence, digital modulation techniques have a greater demand, for their capacity to convey larger amounts of data than analog ones. ![]() ![]() Digital Modulation provides more information capacity, high data security, quicker system availability with great quality communication. ![]()
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