Do you talk about a "bucking bifilar" as an "anti-serial" bifilar coil?
I have had the following "idea" long ago:
Wind a Cone shaped caduceous/whatever coil like > and use an
electret as core-material. Don't know if this would result in anything.
About a Caduceus (new type as you said) coil:
I felt it might generate a field such as --o-- where - could be
the b-field, but i never did anything about calculating it with em-theorie.
So in effect one might be used as some sort of a directional magnetic antenna.
> John Berry
Ciao...
Andreas