Regenerative loop antenna

The regenerative loop antenna can consist of a tuned signal winding on an open X frame with a feed back winding in close proximity. High effective gain is achieved, for example by placing this feedback winding in the drain circuit of a JFET (junction field effect transistor). An antenna of this type employing vacuum tubes was constructed by Vladimir Zworykin in the 1920s.

Sources
  • ARRL publication QEX, January/February 2007, pages 45–46.
gollark: Although I guess the newer ones typically have a few moar coar.
gollark: To be fair, there hasn't actually been that much performance improvement since then because intel.
gollark: I mean, Apple do have some of the best ARM cores around.
gollark: Well, that sounds like a step backward.
gollark: Vaguely relatedly, potatOS had an issue a while ago where if you filled up the disk it would fail erratically, so you should probably try and avoid that sort of thing.
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