The transformer-less generation of amplitude modulation: Theory and experiment

The laboratory implementation of amplitude modulation (AM) uses either the dasiaswitching-modulatorpsila or the dasiasquare-lawpsila modulator; both of which use an active device along with transformers, and have specific operating conditions. In this paper we demonstrate a new method of AM generation without using any transformers, and with an additional advantage of eliminating the difficult to maintain operating conditions (as in existing methods).