Amplitude Shift Keying Modulation & Demodulation DPSK Differential Phase Shift Keying Modulation & Demodulation Objective: To construct DPSK modulation & demodulation It consists of two input signal generator (i.e.) bit clock & data generator Modulation can be done with the help of bit clock signal with the data signal Demodulation can be done to retrieve data signal with the help of 7490 & tl084 IC’s