A 3mW continuous-time ΣΔ-modulator for EDGE/GSM with high adjacent channel tolerance. - Markus Schimper; Lukas Dörrer; Ettore Riccio; Georgi Panov (ESSCIRC, 2004)

A configurable cascaded continuous-time ΔΣ modulator with up to 15MHz bandwidth. - Jens Sauerbrey; Jacinto San Pablo Garcia; Georgi Panov; Thomas Piorek; Xianghua Shen; Markus Schimper; Rudolf Koch; Matthias Keller; Yiannos Manoli; Maurits Ortmanns (ESSCIRC, 2010)