Development of the Area-Reducing Active "Coil-Enhancement" Principle, Practiced Onto an ADSL-POTS Splitter. - Herbert De Pauw; Vincent De Gezelle; Jan Doutreloigne; André Van Calster; Edmond Op de Beeck; Rens Van Bolderik; Jurgen Content (IEEE Trans. Circuits Syst. I Regul. Pap., 2010)