Do class F amplifiers work in linear mode or CCM?

[Fawkes]

Hey guys, I am dealing with a slight issue here, I am learning the basics of class F amplifiers. but I am not able to understand that whether the transistor in class f operation works in linear mode or current control mode? Also i am dealing this problems at power levels of 10W to 25W scales, if it matters...

any help is much appreciated. Thanks in advance.

 

[meBigGuy]

I'm not sure what you mean by current control mode, but the whole point of class F amplifiers is for the switch to be saturated (fully on) or cutoff (fully off). Any time spent in actual linear mode (for example, while switching) creates wasted power.

This will probably tell you way more than what I know.

http://www.cree.com/~/media/Files/Cree/RF/Papers%20and%20Articles/102Behaviors_of_ClassF_and_ClassF1_Amplifiers.pdf