TRICKY TRADE-OFFS

摘要

Poherty power amplifiers (PA) use main and auxiliary (peak-ing) amplifiers, connected in parallel, to attain relatively high efficiency over a range of output powers. Designing one can be a tricky proposition since there are many different parameters to be adjusted and multiple responses to look at, most of which are specified versus the output power, which unlike the input power is also a response from the simulation. In order to make the trade-offs necessary to meet specifications over a wide range of output powers, the engineer must determine which parameters have a dominant effect on performance.