Wei Tai

Wei Tai

Wei Tai CV

Research Description

My research focuses on RF and mm-wave integrated power amplifier (PA) design. In particular, the design of PAs used in watt-level, high peak-to-average ratio applications are of interest. High output power is achieved by incorporating efficient power combining structures. Peak efficiency can be boosted by the use of an outphasing transmitter topology, where as the average efficiency degradation caused by the large back-off requirement is mitigated by power control schemes, e.g. transformer-based dynamic power control or discrete supply scaling. We aim to realize these concepts at a frequency up to the mm-wave range.

45GHz power amplifier test structures fabricated in 0.13um SiGe BiCMOS technology