A common basis for the Darlington and Szentirmai network syntheses

There is a close parallel between the bases for the classic Darlington (passive) network synthesis procedure and the recent Szentirmai active-network synthesis procedure. The two essentially differ only in exchanging oddness for evenness in network parameters and terminations, and reactive power for real power in the basic equation. The somewhat more general basis thus offered for the Szentirmai procedure should stimulate research in active-network synthesis.