A NOTE ON THE ARMSTRONG SYSTEM OF FREQUENCY MODULATION

N N BISWAS, S K CHATTERJEE

Abstract


A relation between the degree of amplitude modulation produced in the Armstrong FM system as a function of the modulating frequency and modulating voltage has been derived from the vector diagram drawn by utilising the 'zero frequency carrier' concept (Wheeler, 1941). A graphical relafion between the degree of amplitude modulation and the total harmonic distortion produced in the Armstrong system has been established.

Full Text:

PDF

Refbacks

  • There are currently no refbacks.