[Amps] Plate modulation from power supply ripple?

[Fuqua, Bill L]

  Modulation and demodulation can take place by:
1. Modulating the gain of a device
2. Modulating its output impedance
3. A Nonlinearity that includes a squared ( second order term) or for IMD or cross modulation odd order terms of 
    the polynomial that describes the nonlinear characteristics of the device.
    Remember (A+B)^2 = A^2 + 2AB + B^2.
    The multiplication is accomplished by the 2AB component 

73
Bill wa4lav