Explain using a diagram the phase slight method of producing single side band suppressed carrier amplitude modulation SSBSC.

Phase Shift Method of Producing SSBSC

Diagram:


Components:

- Mixer 1: Multiplies the message signal (m(t)) by a carrier signal (cos(2πfct)).
- Mixer 2: Multiplies the carrier signal by a phase-shifted version of the carrier signal (sin(2πfct + π/2)).
- Bandpass Filter: Filters out the desired sideband and suppresses the carrier.

Operation:

1. Mixing in Mixer 1: The message signal (m(t)) is mixed with the carrier signal (cos(2πfct)) to produce upper (USB) and lower (LSB) sidebands.
2. Phase Shifting: The carrier signal is phase shifted by π/2 using a phase shifter.
3. Mixing in Mixer 2: The phase-shifted carrier signal is mixed with the output of Mixer 1.
4. Phase Cancellation: The USB and LSB sidebands produced in Mixer 1 have the same amplitude but opposite phases. When they are mixed with the phase-shifted carrier, the carrier is canceled out.
5. Bandpass Filtering: The output of Mixer 2 is passed through a bandpass filter that selects the desired sideband (either USB or LSB) and suppresses the unwanted sideband (LSB or USB) and the carrier.

Result:

The output of the bandpass filter is a single-sideband signal (SSB), where the carrier is suppressed and only one sideband is present.