Amplitude Modulation

• Linear Amplitude Modulation
  • Single Side Band (SSB)
    • SSB Description
    • Test Tone
    • Carrier Power
    • SSB Bandwidth
    • SSB Generation

  SSB Description

    

  Test Tone

  Let .

    

  Carrier Power

  

  SSB Bandwidth

  The bandwidth of SSB is

  

  which is half that required for DSB or AM-TC.

  SSB Generation

  SSB is somewhat more difficult than DSB to generate but requires less bandwidth.

  1. Filter Method (Figure 3.5, page 152) Filter constraints are severe, must not have a DC component.
  2. Phasing Method (Figure 3.7, page 155) Difficult to construct a phasing network which properly phases all the frequency components of the baseband signal.