AM Modulator with JFET Input Operational Amplifier

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SPICE simulation of a AM modulator with operational amplifier. A modulating signal, in this case a 2 khz sinusoidal frequency, modulates the amplitude of the 100 khz carrier. This modulation is also called double sideband full carrier (DSBFC) and produces in the spectrum a fcarrier+fmodulating, and fcarrier-fmodulating frequency components, with a bandwidth of 2*fmodulating, 4 khz. The operational amplifier is a LF411.

  • Free
  • Simple
  • <10
  • PSpice
  • 9.1+
  • No
  • modulated signal FFT of modulated signal


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