Patent US3864687A successfully refreshed from Google Patents.
US3864687A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Coaxial horn antenna
Assignee: Cubic Corp
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Filing: 1973-06-18
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Granted: 1975-02-04
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Expires: 1993-06-18
Abstract
Abstract A wide band, multi-mode antenna having a plurality of coaxial, independently fed, radiating horns. Each horn has multiple feeds which can be energized in various phase relationships to control polarization. The antenna can be used as a direct radiator, or to illuminate a reflector, has transmit or receive capabilities, and is adaptable to monopulse operation. The antenna is a compact rigid unit of very simple construction.
Inventors
- 👤 Glenn A Walters
- 👤 Edward E Vonkline
- 👤 Duane Tubbs
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 12:00
CPC Classifications
H; H01; H01Q; H01Q25/00; H01Q25/04; H01Q19/00; H01Q19/10; H01Q19/12; H01Q19/17
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
149 words
A coaxial horn antenna, comprising: a plurality of at least three progressively sized tubular horns secured together in coaxial alignment and defining concentric radiating apertures at one end, the innermost horn having a pair of feeds coupled thereto that are spaced 90* and the intermediate and outermost horns having four feeds coupled that are spaced 90*, each of said feeds having means for connection to a signal source, said horns are axially staggered with the innermost horn extending a preset distance from said one end, and the intermediate horn extending an intermediate distance between the innermost horn and the outermost horn, each of said feeds inCludes a coaxial to wave guide transition element coupled to the inner surface of the respective horn, said means for connection comprising a coaxial conductor to said transition element, and the ratio of cross sectional size between adjacent horns is approximately 2 to 1.
Claim 2
Dependent Claim
149 words
A coaxial horn antenna, comprising: a plurality of at least three progressively sized tubular horns secured together in coaxial alignment and defining concentric radiating apertures at one end, the innermost horn having a pair of feeds coupled thereto that are spaced 90* and the intermediate and outermost horns having four feeds coupled that are spaced 90*, each of said feeds having means for connection to a signal source, said horns are axially staggered with the innermost horn extending a preset distance from said one end, and the intermediate horn extending an intermediate distance between the innermost horn and the outermost horn, each of said feeds inCludes a coaxial to wave guide transition element coupled to the inner surface of the respective horn, said means for connection comprising a coaxial conductor to said transition element, and the ratio of cross sectional size between adjacent horns is approximately 2 to 1.
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) | 1978-02-03 | 1978-08-05 | 1979-02-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-02-03 | 1982-08-05 | 1983-02-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-02-03 | 1986-08-05 | 1987-02-04 | $7700.00 | Window Closed / Lapsed |