Raised Cosine Waveform without Filter

If one searches ‘Raised Cosine’, he will likely find that it is related to special filters, called Raised Cosine ones. These filters smooth the fast rise and fall edges of a squarewave signal to remove its higher harmonies. The presented topology below shows that this could be done, to a good approximation, without a filter.

A sample circuit, ‘RaisedCosine_01’, of this topology is attached.