Power Amplifiers:, Broadband, load modulation, Doherty PA, pulse gate modulation, High Efficient PAs, Switch Mode PAs, Transceiver Design:, All-digital transmitters, Transceivers, Digital control of RF circuits, Transmit/Receive module, Chip Design:, CMOS and GaN MMIC based power amplifiers design, mixed signal design, GaN MMIC based RF Chip design, Modelling:, RF PA Design with Embedding Device Model, Non-linear device modelling, RF measurement , RF Circuits:, Multi-port Networks, Modulators ,