Mini_Turbo
Newbie level 3
I saw some PA's datasheets saying support APT or ET, is there any differencc between them from the design perspective? Thanks!
Follow along with the video below to see how to install our site as a web app on your home screen.
Note: This feature may not be available in some browsers.
ET is necessary for highly nonlinear amplifier classes (C, D, E, F, etc), which should show a more linear response to drain voltage modulation. Linear topologies (A, AB) are compatible with both APT and ET. I suppose nowadays it's becoming desirable to design the PA to operate in class C or E for high power output conditions, but then back off into a linear mode at lower output power, in order to get the best dynamic range.The major difference is the modulator bandwidth, however, for PA designer, what should we take into account? Does the PA designed for APT can also support ET application?