13.2 A digital multimode polar transmitter supporting 40MHz LTE Carrier Aggregation in 28nm CMOS. - Michael Fulde; Alexander Belitzer; Zdravko Boos; Michael Bruennert; Jonas Fritzin; Hans Geltinger; Marcus Groinig; Daniel Gruber; Simon Gruenberger; Thomas Hartig; Vahur Kampus; Boris Kapfelsperger; et al. (ISSCC, 2017)

Unleashing the full power of feed-forward opamps: a 200MHz, fully differential, conditionally stable, 36dB gain PGA, using a four-stage multi-path 2.5V amplifier with double feed-forward compensation. - Vahur Kampus; Martin Trojer; Robert Teschner (NORCAS, 2018)

A fully differential, 200MHz, programmable gain, level-shifting, hybrid amplifier/power combiner/test buffer, using pre-distortion for enhanced linearity. - Vahur Kampus; Toomas Rang; Daniel Knaller; Christian Fleischhacker; Markus Korak; Jozef Kiss (PRIME, 2018)

Five-Stage, Power Efficient, Dual Rail, 100MHz, 10dB Programmable Gain Amplifier with Down-Stepping Functions in 28nm CMOS. - Vahur Kampus; Robert Teschner; Ulrich Gaier; Thomas Linder; Gerhard Nössing; Martin Trojer (ISCAS, 2019)