Probably too late for your question.. and this Probably belongs in the Modeling section not the language section..

1. typically multiphase dividers use multiple FF,
your could actually create two divide by two circuits and run on off the regular signal and the other off the inverted clock..
If your flop has Q Qb  outputs you're done.

Since its a clocked effect, I wouldn't offer sinusoidal ,but you could use an RC filter (Rout, Cload+Cwire) on your outputs
to get something close to sinusoidal..(reduce the energy of the high frequency parts.. )
jbd