TY - JOUR A1 - Heuermann, Holger A1 - Hillebrand, Jürgen A1 - Sadeghfam, Arash T1 - Novel Concept of a Digital SigmaDelta-PLL-Phase-Shift-Modulator / Hillebrand, Jürgen ; Sadeghfam, Arash ; Heuermann, Holger Y1 - 2008 SN - 978-3-8007-3086-5 N1 - Microwave Conference (GeMIC), 2008 German SP - 123 EP - 126 ER -