Self-resonant folded unipole antenna

Communications: radio wave antennas – Antennas – With support for antenna – reflector or director

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Details

343749, 343846, H01Q 136

Patent

active

061338907

ABSTRACT:
A self-resonant vertically polarized folded unipole antenna for long wave (LW), medium wave (MW) broadcasting and for the 160 meter amateur radio band with a grounded tower connected to radially descending fold wires terminated near the base of the tower in an open polygonal ring, possibly a C-ring with a reactive load in series with this ring. This reactance cancels the reactive component of the antenna input impedance causing the input impedance to appear resistive at the feed point. This leads to outstanding linearity and bandwidth up to and possibly exceeding plus or minus 16 kHz, sometimes exceeding plus and minus 20 kHz. The antenna is particularly useful for AM broadcasting of high quality music with response capable of being better than that of FM.

REFERENCES:
patent: 2508657 (1950-05-01), Toller-Bond
patent: 3001194 (1961-09-01), Leppert
patent: 5673055 (1997-09-01), Hansen
patent: 5835067 (1998-11-01), Goodman

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