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US3701159A Expired / Lapsed US ⏱️ 0.0 years remaining

Discone antenna

Assignee: Department of National Defence
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Filing: 1971-11-08
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Granted: 1972-10-24
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Expires: 1991-11-08
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Abstract

Abstract The antenna structure disclosed is of the discone type and comprises six support towers arranged at the vertices of a hexagon. Active element supporting cables extend between the towers along the sides of the hexagon. A plurality of active elements radiate outwardly from a feed point located centrally of the hexagon to terminate on the supporting cables. The supporting towers are guyed by a plurality of guys anchored at six anchor points located on lines of intersection of vertical planes through the supporting cables. The guys extend outwardly of the hexagon within these vertical planes. The supporting tower and guying arrangement is extremely simple compared to prior arrangements. Furthermore, the feed point is supported above a platform raised above actual ground level and a plurality of ground wires extend radially outward of the platform and downwardly therefrom with the major portion of their length being buried beneath the ground. This eliminates problems of high frequency noise adjacent actual ground level and also eliminates problems of wind blown refuse, snow, etc., interfering with proper operation of the antenna. The antenna may be tuned by adjusting the height of the feed point above the platform and by means of a variable capacitor in the feed line to the antenna.

Inventors

  • 👤 Peter Simonds

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-29 15:14
CPC Classifications
H; H01; H01Q; H01Q9/00; H01Q9/04; H01Q9/16; H01Q9/28; H01Q9/06; H01Q9/14; H01Q9/145

Claims Analysis

Total Claims: 12
Claim 1
Independent Claim 93 words
An antenna structure comprising six support towers arranged at the vertices of a hexagon and having active element supporting cables extending between said towers along the sides of the hexagon, said structure having a plurality of active elements radiating outwardly from a feed point located centrally of said hexagon to terminate on said supporting cables, said support towers being guyed by a plurality of guys anchored at six anchor points located on lines of intersection of vertical planes through said supporting cables, said guys extending outwardly of said hexagon within said vertical planes.
Claim 2
Dependent Claim 93 words
An antenna structure comprising six support towers arranged at the vertices of a hexagon and having active element supporting cables extending between said towers along the sides of the hexagon, said structure having a plurality of active elements radiating outwardly from a feed point located centrally of said hexagon to terminate on said supporting cables, said support towers being guyed by a plurality of guys anchored at six anchor points located on lines of intersection of vertical planes through said supporting cables, said guys extending outwardly of said hexagon within said vertical planes.
Claim 3
Dependent Claim 37 words
An antenna structure as claimed in claim 1 wherein two vertical planes pass through each support tower and a guy extends in each of these planes from the top of a support tower to an anchor point.
Claim 4
Dependent Claim 30 words
An antenna structure as claimed in claim 2 wherein additional guys extend in each plane from points intermediate the top and bottom of a support tower to an anchor point.
Claim 5
Dependent Claim 49 words
An antenna structure as claimed in claim 2 wherein said feed point is supported above a platform raised above actual ground level and a plurality of ground wires extend radially outward of said platform and downwardly therefrom with the major portion of their length being buried beneath the ground.
Claim 6
Dependent Claim 49 words
An antenna structure as claimed in claim 3 wherein said feed point is supported above a platform raised above actual ground level and a plurality of ground wires extend radially outward of said platform and downwardly therefrom with the major portion of their length being buried beneath the ground.
Claim 7
Dependent Claim 18 words
An antenna structure as claimed in claim 4 wherein said ground wires extend outwards beyond said supporting cables.
Claim 8
Dependent Claim 33 words
An antenna structure as claimed in claim 4 wherein means are provided for adjusting the height of the feed point above said platform whereby the antenna may be tuned by adjusting said height.
Claim 9
Dependent Claim 33 words
An antenna structure as claimed in claim 5 wherein means are provided for adjusting the height of the feed point above said platform whereby the antenna may be tuned by adjusting said height.
Claim 10
Dependent Claim 31 words
An antenna structure as claimed in claim 1 including a feed line connected through a variable capacitor to said feed point whereby the antenna may bE tuned by varying said capacitor.
Claim 11
Dependent Claim 31 words
An antenna structure as claimed in claim 4 including a feed line connected through a variable capacitor to said feed point whereby the antenna may be tuned by varying said capacitor.
Claim 12
Dependent Claim 31 words
An antenna structure as claimed in claim 8 including a feed line connected through a variable capacitor to said feed point whereby the antenna may be tuned by varying said capacitor.

References Cited (Backward Citations)

US2746040A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1975-10-24 1976-04-24 1976-10-24 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1979-10-24 1980-04-24 1980-10-24 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1983-10-24 1984-04-24 1984-10-24 $7700.00 Window Closed / Lapsed

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