Communications: radio wave antennas – Antennas – Single adjustable length electrically long linear antenna
Patent
1990-04-23
1991-07-02
Wimer, Michael C.
Communications: radio wave antennas
Antennas
Single adjustable length electrically long linear antenna
343741, 343868, 343877, 343886, H01Q 112, H01Q 702
Patent
active
050289322
ABSTRACT:
A flexible antenna which operates to control both the reactance as well as the resistance of the antenna. A motorized pulley system attached between two supports is utilized to control the effectrive length of the wire as well as the height of the antenna above ground. The antenna includes a flat base portion suspended between the supports and leg portions extending from the base to the apex of the triangle close to the ground. The total length of the antenna as well as the height of the base portion above the ground is dependent upon the particular frequency which is to be transmitted or received.
REFERENCES:
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patent: 3530474 (1970-09-01), Campbell
patent: 3950756 (1976-04-01), Tisler
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