Hi, good morning. This site is dedicated to students in communications engineering. Nothing is new here. It is just a discussion forum about SSB.

SSB is for Single Side Band.

When a carrier frequency is modulated by way of changing its strength, it is called AMPLITUDE MODULATION.

It has three components. The carrier wave, the upper side band wave and the lower side band wave. Since a wave is sinusoidal , it has a positive peak and a negative crest. When it is modulated, the vertical size of the wave moves and the upper side and the lower side carry the same information.

In AM radios, detecting this amplitude change is a cinch. Just use a diode at the end of the RF amplification (in superhets) to detect the fluctuating DC which carries the information. Either side will do. So, the diode can be placed in any direction.

The waves leaving the  AM Tx are the carrier wave, the upper side band and the lower side band. First it s a waste of use of power at the TX to send both side bands. One will do. Second, the carrier wave need not be sent since it can be inserted at the RX's side.

SO, ONLY ONE WAVE NEEDS TO BE SENT-ONE SIDE BAND.

The power available in the TX can all be dedicated to send out one side band and therefore, it is more powerful.

We shall proceed on ow this is done by studying a Single Side Bank transceiver.