US3665479A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Omnidirectional tower supported antenna
Assignee: ELECTRONICS RESEARCH Inc
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Filing: 1970-07-28
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Granted: 1972-05-23
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Expires: 1990-07-28
Abstract
Abstract A combined dipole-loop antenna for bipolarized radio frequency signals. A dipole-loop is mounted on each face of an electrically large multi-faceted tower such as a triangular tower with the plane of the loop being perpendicular to the axis of the tower and transverse to the face plane of the tower with the dipole portion extending above and below the loop and parallel to the vertical axis with the loop portion encircling the transmission line and the dipole portion facing the tower.
Inventors
- 👤 Robert M Silliman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 06:21
CPC Classifications
H; H01; H01Q; H01Q21/00; H01Q21/06; H01Q21/20; H01Q21/205
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
165 words
An omnidirectional bipolarized antenna system for signals of wavelength lambda , having a multi-faced vertical tower structure supporting a plurality of identical active antennas each opposite an individual face, wherein each of said antennas comprises: a transmission feed line extending perpendicularly outward from said face to feed the antenna with an equal amplitude and phase signal as the other antennas, a loop of approximately 1/8 lambda diameter emanating from the end of said transmission line, said loop having two non-joining semicircular sections folded back toward said face, encircling said transmission line but permitting it to pass between the unjoined ends, said loop and transmission line defining a plane transverse and perpendicular to the face, and two dipole arms each connected to a different end of said semi-circular sections and pointing in opposite directions, said arms each approximately 1/3 lambda in lenGth and being parallel to said transmission face, said dipole arms positioned about one-eighth lambda to about onehalf lambda from each of said tower faces.
Claim 2
Dependent Claim
165 words
An omnidirectional bipolarized antenna system for signals of wavelength lambda , having a multi-faced vertical tower structure supporting a plurality of identical active antennas each opposite an individual face, wherein each of said antennas comprises: a transmission feed line extending perpendicularly outward from said face to feed the antenna with an equal amplitude and phase signal as the other antennas, a loop of approximately 1/8 lambda diameter emanating from the end of said transmission line, said loop having two non-joining semicircular sections folded back toward said face, encircling said transmission line but permitting it to pass between the unjoined ends, said loop and transmission line defining a plane transverse and perpendicular to the face, and two dipole arms each connected to a different end of said semi-circular sections and pointing in opposite directions, said arms each approximately 1/3 lambda in lenGth and being parallel to said transmission face, said dipole arms positioned about one-eighth lambda to about onehalf lambda from each of said tower faces.
Claim 3
Dependent Claim
102 words
a first conductive member having one end joined to one of said loop ends and a second vertical conductive member having one end joined to the other of said loop ends, said vertical members extending in opposite directions and of suitable length to act as a dipole radiator for signals of wavelength lambda ; and c. feedline means connected to said conductor at a point approximately opposite the open point of said loop for carrying a signal from a transmission line to said dipole-loop radiator, said dipole-loop radiator being oriented with said dipole radiator closer to the tower than said feed point.
Claim 4
Dependent Claim
102 words
a first conductive member having one end joined to one of said loop ends and a second vertical conductive member having one end joined to the other of said loop ends, said vertical members extending in opposite directions and of suitable length to act as a dipole radiator for signals of wavelength lambda ; and c. feedline means connected to said conductor at a point approximately opposite the open point of said loop for carrying a signal from a transmission line to said dipole-loop radiator, said dipole-loop radiator being oriented with said dipole radiator closer to the tower than said feed point.
Claim 5
Dependent Claim
31 words
A system as in claim 1, wherein said tower is a large triangular tower having said antennas on each of its three faces in a lateral plane thereby forming a bay.
Claim 6
Dependent Claim
23 words
A system as in claim 2 wherein said tower compresses a plurality of bays, each spaced from the other in a vertical direction.
Claim 7
Dependent Claim
33 words
A system as in claim 1 further including a pair of capacitor plates each attached to an end of said semicircular sections, wherein said dipole arms are mechanically supported by said capacitor plates.
Claim 8
Dependent Claim
27 words
The system of claim 1 including a plurality of passive antenna elements operative at a wavelength lambda , said passive elements being interspersed between said active antennas.
Claim 9
Dependent Claim
53 words
A high frequency antenna array for radiation of an omnidirectional bipolarized signal of wavelength lambda comprising: a. a metal tower extending vertically along a longitudinal axis and having a transverse dimension greater than 1 wavelength; b. a plurality of dipole-loop radiators mounted on said tower and spaced therefrom, each said dipole-loop radiator comprising:
Claim 10
Dependent Claim
53 words
A high frequency antenna array for radiation of an omnidirectional bipolarized signal of wavelength lambda comprising: a. a metal tower extending vertically along a longitudinal axis and having a transverse dimension greater than 1 wavelength; b. a plurality of dipole-loop radiators mounted on said tower and spaced therefrom, each said dipole-loop radiator comprising:
Claim 11
Dependent Claim
34 words
The array of claim 5 wherein at least two of said dipole-loop radiators being positioned at points at the same tower elevation separated from each other horizontally by at least a distance lambda .
Claim 12
Dependent Claim
17 words
The apparatus of claim 6 wherein said feedline means passes through the opening in the peripheral loop.
Claim 13
Dependent Claim
27 words
The system of claim 6 including a plurality of passive antenna elements operative at a wavelength lambda , said passive elements being interspersed between said active antennas.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-05-23 | 1975-11-22 | 1976-05-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-05-23 | 1979-11-22 | 1980-05-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-05-23 | 1983-11-22 | 1984-05-23 | $7700.00 | Window Closed / Lapsed |