>
> >     You might want to add this to your list of suitable
> > alternatives:
> >
> > http://www.home.earthlink.net/~christrask/Paper009.html
>
>
>I didn't realise you were a member of this group. Thanks for
> the link - I have been studying your other paper on
> complementary push-pull amplifiers for active antennas but
> hadn't seen your loop paper.
>
> Very helpful.
>

     Clifton Labs used a portion of that paper in their latest active monopole 
amplifier offering.  They added a bipolar emitter follower stage between the 
JFET input and complementary output to further unload the JFET.  They also 
reverted back to the original KAA 1000 JFET input with far less current.  It's 
a nice fusion of topologies and the performance is every bit as good.

    I have quite a few loop antenna papers on my page as well as a large work 
on shielded loop antennas in the files section of the Yahoo! loop antennas 
group.

Chris