Question

What gets shifted in the signals involved in Frequency Shift Keying?

• A. Amplitude
• B. Frequency
• C. Phase
• D. Amplitude and Phase

Hint:

Digital Modulation Types. ASK (Amplitude Shift Keying): Amplitude shifted. FSK (Frequency Shift Keying): Frequency shifted. PSK (Phase Shift Keying): Phase shifted.

Answer 1

The Correct Option is B

Frequency Shift Keying (FSK) is a digital modulation technique where digital data (binary 0s and 1s) is represented by shifting the frequency of a carrier signal between two or more discrete frequencies
For example, a '1' might be represented by transmitting frequency \(f_1\), and a '0' by transmitting frequency \(f_2\)
The amplitude and phase of the carrier usually remain constant
Therefore, it is the frequency of the carrier signal that gets shifted in FSK