J. Sommarek

A 1.5-V direct digital synthesizer with tunable delta-sigma modulator in 0.13-/spl mu/m CMOS

K. Halonen, J. Vankka, J. Lindeberg, 2005, IEEE Journal of Solid-State Circuits.

Transmitter architectures with digital modulators, D/A converters and switching-mode power amplifiers

Johan Sommarek, J. Sommarek, 2007 .

Digital Modulator with Bandpass Delta-Sigma Modulator

K. Halonen, J. Vankka, J. Sommarek, 2004, Proceedings of the 30th European Solid-State Circuits Conference.

Comparison of different class-D power amplier topologies for 1-bit band-pass delta-sigma D/A converters

K. Halonen, J. Vankka, J. Sommarek, 2004, Proceedings Norchip Conference, 2004..

A digital quadrature modulator with on-chip D/A converter

K. Halonen, J. Vankka, I. Teikari, 2003, ESSCIRC 2004 - 29th European Solid-State Circuits Conference (IEEE Cat. No.03EX705).

A GSM/EDGE/WCDMA modulator with on-chip D/A converter for base stations

Marko Kosunen, Jouko Vankka, O. Vaananen, 2002 .

A 20 MHz BP-PWM and BP-DSM Class-D PA in 0.18 μm CMOS

Kari Halonen, Jouko Vankka, Ville Saari, 2005, 2005 12th IEEE International Conference on Electronics, Circuits and Systems.

A 1.5-V direct digital synthesizer with tunable delta-sigma modulator in 0.13-/spl mu/m CMOS

Kari Halonen, Jouko Vankka, Johan Sommarek, 2005, IEEE Journal of Solid-State Circuits.