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Date: Fri, 07 Mar 2008 21:35:11 +0100
From: "Johan H. Bodin" <jh.bodin@telia.com>
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Subject: LF: Smaller DC feeding choke in class E amplifier
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LFers,
the usual design equations for class E amplifiers assume that the DC feeding
choke has a very large inductance in order to keep the DC current practically
constant over the RF cycle. I am in the process of building (yet another) class
E CW QRP transmitter and the need for an almost infinite inductance has annoyed
me for quite a while. Somewhere between the solder smoke puffs, I did some
googling and found this interesting paper:
http://www.msm.ele.tue.nl/~dmilosev/ECCTD2005.pdf
My current project is a small 80m TX but I think this information is applicable
to LF as well.
73
Johan SM6LKM