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Old May 5th 04, 01:32 PM
SioL
 
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"Rene Tschaggelar" wrote in message ...
Paul Burridge wrote:
Hi all,

I was thinking about having a go at contriving (I won't say
"designing" for obvious reasons) a class 'C' RF amp using MOSFETs
instead of the usual BJTs/toobz. They seem - on the face of it at
least - ideally suited to the task. I'm just a bit concerned about
whether even the fastest ones would be fast enough, even given
adequate gate drive. I'd be surprised if they weren't good for at
least a few Mhz., but am quite frankly clueless as to MUF. Anyone
know?



Paul,
what is the frequency range and the amplitude ?
I assume a 50 Ohm system.


Yep, that's a good question for Win.

Suitable general purpose MOSFETs for RF finals (probably only feasible in the
shortwave range) and best way to drive them.

Let's say the more power the better (10-200W).

SioL