help: Search-fu "class e"

[innkeeper]

i am trying to gleam the forum wisdom on the topic of Class E amplifiers
Class E
as a search term tells me i have to have worse longer then 1 letter
"class e" comes back with other things then the word class followed by an E but E anypalce else in the post
I'm kinda getting around this using the google search function but, is there some searchfu way of doing this within the forum search?
thanks

[oPossum]

https://www.google.com/search?q=site%3Aeevblog.com+class+e

[fourfathom]

Here is one of the original articles about Class-E RF amplifiers: https://people.physics.anu.edu.au/~dxt103/160m/class_E_amplifier_design.pdf
More: https://people.physics.anu.edu.au/~dxt103/class-e/
And what looks like a good video: https://www.keysight.com/au/en/library/demos/how-to-video/how-to-design-an-rf-power-amplifier-class-e-2581786.html

All of these popped up when I googled: "class e rf amplifier"

I've built a few low-power Class-E amps (1-2W, 10 MHz region) and they work quite well.  I measured 98% efficiency on one of them, and it let me get 1.2W using two SOT fets in parallel.  The fets ran just a few degrees over ambient.  You will find many equations out there, loosely based on Sokol's work, but I've found that they need to be tweaked a little for low-power design (or perhaps my input parameters aren't quite accurate?)

TonneSoftware.com (http://tonnesoftware.com/) has a decent Class-E calculator you can download.  It uses "saturation voltage" instead of FET on-resistance, but the values it puts out seem to work well.  I've also built a few spreadsheet calculators using the Sokol (and other) equations found here and there on the net.