Mani Raj Paul - FSK

Frequency Shift Keying (FSK) is a digital modulation technique in which  thr carrier signal varies according to the digital signal changes.

FSK Modulator

The FSK modulator block diagram has two oscillators with a clock and the input sequence.

FSK Demodulator

The main methods of FSK detection are asynchronous detector and synchronous detector.

Asynchronous FSK Detector

The block diagram of Asynchronous FSK detector consists has two band pass filters,2 envelop detectors, and a decision circuit.

Synchronous FSK Detector

The block diagram of Synchronous FSK detector consists has two mixers with local oscillator circuits, two band pass filters and a decision circuit.

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