GaN Discrete PA Design Using AWR Software
To create this hybrid discrete power amplifier (PA), Qorvo wanted to provide a highly broadband solution that was inexpensive and had a small footprint, but this made implementing multiple stages a difficult task given size constraints. The designer chose to use a bridged T topology because it allowed him to match the input of a single transistor to 50Ω while minimizing die area. The packaged amplifier needed to demonstrate 5W of output power and 40-50% power-added efficiency (PAE) across the 1 – 2.7GHz range.
Cadence AWR Microwave Office circuit design software was used for the linear simulations, which were matched to imported S-parameter blocks. The Cadence AWR AXIEM 3D planar electromagnetic (EM) analysis was used for the board-level layout and EM simulation of the input and output matches.
To continue to read the full story, click to download the PDF document below...