US4423422A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Diagonal-conical horn-reflector antenna
Assignee: Commscope Technologies LLC
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Filing: 1981-08-10
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Granted: 1983-12-27
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Expires: 2001-08-10
Abstract
Abstract A horn-reflector microwave antenna has a reflector plate which is a section of a paraboloid, and a flared feed horn for supplying microwave signals to the reflector plate. The horn has a conical section forming a circular aperture at the wide end, which is the end closer to the reflector plate, and a pyramidal section forming a square aperture at the narrow end, which is the end farther away from the reflector plate. Microwave signals are supplied to the feed horn with the electrical field extending along a diagonal of the square aperture.
Inventors
- 👤 Charles M. Knop
- 👤 Edward L. Ostertag
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 21:18
CPC Classifications
H; H01; H01Q; H01Q19/00; H01Q19/10; H01Q19/12; H01Q19/13; H01Q19/132
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
116 words
A horn-reflector microwave antenna comprising a reflector plate which is a section of a paraboloid, a flared feed horn for supplying microwave signals to said reflector plate, said horn having an absorber-lined conical section forming a circular aperture at the wide end, which is the end closer to said reflector plate, and a pyramidal section forming a square aperture at the narrow end, which is the end farther away from said reflector plate, and means for supplying microwave signals to said feed horn with the electric field extending along a diagonal of said square aperture, the combination of said pyramidal section and said absorber-lined conical section producing substantially equal patterns in the E and H planes.
Claim 2
Dependent Claim
116 words
A horn-reflector microwave antenna comprising a reflector plate which is a section of a paraboloid, a flared feed horn for supplying microwave signals to said reflector plate, said horn having an absorber-lined conical section forming a circular aperture at the wide end, which is the end closer to said reflector plate, and a pyramidal section forming a square aperture at the narrow end, which is the end farther away from said reflector plate, and means for supplying microwave signals to said feed horn with the electric field extending along a diagonal of said square aperture, the combination of said pyramidal section and said absorber-lined conical section producing substantially equal patterns in the E and H planes.
Claim 3
Dependent Claim
26 words
A horn-reflector antenna as set forth in claim 1 wherein said pyramidal section of the flared horn has a square cross-section along the entire length thereof.
Claim 4
Dependent Claim
26 words
A horn-reflector antenna as set forth in claim 1 wherein said conical section of the flared horn has a circular cross-section along the entire length thereof.
Claim 5
Dependent Claim
15 words
A horn-reflector antenna as set forth in claim 1 wherein the antenna aperture is circular.
Claim 6
Independent Claim
105 words
A method of feeding microwave signals to a reflector plate antenna, said method comprising feeding the signals into the narrow end of a pyramidal horn section having a square aperture, with the electric field extending along a diagonal of the square aperture; feeding the signals from said pyramidal horn section into the narrow end of an absorber-lined conical horn section having a circular aperture; and feeding the signals from said conical horn section onto said reflector plate which is a section of a paraboloid, the combination of said pyramidal section and said absorber-lined conical section producing substantially equal patterns in the E and H planes.
Claim 7
Independent Claim
105 words
A method of feeding microwave signals to a reflector plate antenna, said method comprising feeding the signals into the narrow end of a pyramidal horn section having a square aperture, with the electric field extending along a diagonal of the square aperture; feeding the signals from said pyramidal horn section into the narrow end of an absorber-lined conical horn section having a circular aperture; and feeding the signals from said conical horn section onto said reflector plate which is a section of a paraboloid, the combination of said pyramidal section and said absorber-lined conical section producing substantially equal patterns in the E and H planes.
Claim 8
Dependent Claim
19 words
A method as set forth in claim 5 wherein said pyramidal and conical horn sections are coaxial and contiguous.
Claim 9
Dependent Claim
20 words
A method as set forth in claim 5 wherein said pyramidal and conical horn sections form a single flared horn.
Claim 10
Dependent Claim
14 words
A method as set forth in claim 5 wherein the antenna aperture is circular.
References Cited (Backward Citations)
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US3550142A
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US3936837A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1986-12-26 | 1987-06-27 | 1987-12-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-12-26 | 1991-06-27 | 1991-12-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-12-26 | 1995-06-27 | 1995-12-27 | $7700.00 | Window Closed / Lapsed |