a modified Zepp
An idea I had on April 21, 2003 for a new antenna. It is based on the
end fed Zepp, a half wave wire antenna that needs only a tuned "tank"
circuit to match. this design uses a coil and a capacitor, but the
capacitor is also the radiator.
Two long, thin strips of metal each a half wavelength long are placed
close enough together to form a capacitor of the required value. Since
it is at a resonant length, the RF should radiate right off the
capacitor: a self-radiating tank circuit. The strips could be replaced
with a twisted pair of wires or???
A tap on the coil matches to 50 ohms for coax feed.
Just as a coil stores energy in an electromagnetic field, a capacitor
stores it as an electrostatic field. Will this field "leak out" and
radiate? And what will be the polarity? Maybe someday I will find out.