Combined dipole and ferrite antenna
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United States of America Patent
Stats
-
Sep 27, 1983
Grant Date -
N/A
app pub date -
Jun 25, 1981
filing date -
Jun 25, 1981
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A small sized reception antenna for VHF and/or UHF band for the use in a room has been found. The antenna has a horizontal dipole type first antenna portion having a folded elongated conductor, and a vertical second antenna portion having a ferrite pole electromagnetically coupled with said horizontal first antenna portion. Said horizontal first antenna portion is rotatable in a horizontal plane, while the second antenna portion is fixed vertically. A tank circuit with a tank coil wound on the ferrite pole and a variable capacitor is provided to resonate the antenna with the reception frequency. An output coil is wound on the ferrite pole, and said output coil provides the output signal of the present antenna. Means for sliding the output coil along the ferrite pole is provided to adjust the output impedance of the present antenna for each of the reception frequencies.
First Claim
Family
International Classification(s)
Cited Art Landscape
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