Underwater acoustic communication over Doppler spread channels. - Trym Eggen (1997)

A 1 MHz BW 34.2 fJ/step Continuous Time Delta Sigma Modulator With an Integrated Mixer for Cardiac Ultrasound. - Rune Kaald; Trym Eggen; Trond Ytterdal (IEEE Trans. Biomed. Circuits Syst., 2017)