Power amplifiers is a critical component in RF communications and RF power generation. Depending on the application frequency and required power output. In the past, Dr. Yuk has developed power amplifiers in many technologies, most notably using GaN HEMT devices. His experience ranges from L-band PAs producing 200W+ to K-band PAs producing several Watts. He has also developed multi-mode multi-band, low-cost, high volume RFIC PAs for the cellular industry.
Power amplifiers are ubiquitous in RF design and are under perpetual development due to the many application-specific requirements across frequency, gain, power, linearity and efficiency. As a result, a diversity of topologies ranging from hybrid discrete power amplifiers to MMIC power amplifiers will continue to be in high demand.
A variety of technologies exist to address the requirements of the PA which further increase the complexity of PA design. Some of the design challenges include active device modeling and simulation, passive network design and modeling as well as fabrication, testing and tuning for spec compliance.
