Patent US3364491A successfully refreshed from Google Patents.
Patent US3728726A successfully refreshed from Google Patents.
US3728726A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Tracking radar feed circuitry
Assignee: United States Department of the Navy
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Filing: 1969-11-12
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Granted: 1973-04-17
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Expires: 1989-11-12
Abstract
Abstract A monopulse tracking radar which includes a four-horn diamond feed and wherein the radiated power is doubled by the use of two separate feed lines.
Inventors
- 👤 D Howard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 21:06
CPC Classifications
G; G01; G01S; G01S13/00; G01S13/02; G01S13/06; G01S13/42; G01S13/44; G01S13/4445
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
119 words
A monopulse tracking radar comprising: A four-horn diamond antenna feed having a pair of vertically arranged horns and a pair of horizontally arranged horns; A source of rf power to be transmitted; First feed line means connecting said source of rf power to said pair of vertically arranged horns and including a first TR device and means which provide a signal representative of the elevation angle between a target and the boresight of said radar and Second feed line means connecting said source of rf power to said pair of horizontally arranged horns and including a second TR device and means which provide a signal representative of the azimuth angle between a target and the boresight of said radar.
Claim 2
Dependent Claim
119 words
A monopulse tracking radar comprising: A four-horn diamond antenna feed having a pair of vertically arranged horns and a pair of horizontally arranged horns; A source of rf power to be transmitted; First feed line means connecting said source of rf power to said pair of vertically arranged horns and including a first TR device and means which provide a signal representative of the elevation angle between a target and the boresight of said radar and Second feed line means connecting said source of rf power to said pair of horizontally arranged horns and including a second TR device and means which provide a signal representative of the azimuth angle between a target and the boresight of said radar.
Claim 3
Dependent Claim
40 words
The radar of claim 1 and further including sum signal means connected to said first and second TR devices for producing a signal representative of the sum of the reflected energies in all four horns of said diamond antenna feed.
Claim 4
Dependent Claim
14 words
The radar of claim 2 wherein said sum signal means includes a hybrid junction.
Claim 5
Dependent Claim
31 words
The radar of claim 3 wherein said means which provide signals in said first and second feed lines include hybrid junctions connected between said TR devices and said pairs of horns.
Claim 6
Dependent Claim
53 words
A monopulse tracking radar comprising: A four-horn diamond antenna feed having a pair of vertically arranged horns and a pair of horizontally arranged horns; A source of rf power to be transmitted and Separate feed lines connecting said vertically arranged and said horizontally arranged pairs of horns with said source of rf power.
Claim 7
Dependent Claim
53 words
A monopulse tracking radar comprising: A four-horn diamond antenna feed having a pair of vertically arranged horns and a pair of horizontally arranged horns; A source of rf power to be transmitted and Separate feed lines connecting said vertically arranged and said horizontally arranged pairs of horns with said source of rf power.
Claim 8
Dependent Claim
203 words
A monopulse tracking radar comprising: A four-horn diamond antenna feed having a pair of vertically arranged horns and a pair of horizontally arranged horns; A source of rf power to be transmitted; Power dividing means connected to said rf power source for equally dividing power received from said source; First and second power amplifiers connected to said power dividing means to receive said divided power; First and second TR devices connected to said first and second power amplifiers; First junction means connecting said first TR device to said pair of vertically arranged horns and functioning to pass power to be transmitted and to provide signals representative of the sum and the difference of the target reflected energies in said pair of vertically arranged horns; Second junction means connecting said second TR device to said pair of horizontally arranged horns and functioning to pass power to be transmitted and to provide signals representative of the sum and the difference of the target reflected energies in said pair of horizontally arranged horns and Third junction means connected to said first and second TR devices for producing a signal representative to the sum of the reflected energies in all four horns of said diamond antenna feed.
Claim 9
Dependent Claim
203 words
A monopulse tracking radar comprising: A four-horn diamond antenna feed having a pair of vertically arranged horns and a pair of horizontally arranged horns; A source of rf power to be transmitted; Power dividing means connected to said rf power source for equally dividing power received from said source; First and second power amplifiers connected to said power dividing means to receive said divided power; First and second TR devices connected to said first and second power amplifiers; First junction means connecting said first TR device to said pair of vertically arranged horns and functioning to pass power to be transmitted and to provide signals representative of the sum and the difference of the target reflected energies in said pair of vertically arranged horns; Second junction means connecting said second TR device to said pair of horizontally arranged horns and functioning to pass power to be transmitted and to provide signals representative of the sum and the difference of the target reflected energies in said pair of horizontally arranged horns and Third junction means connected to said first and second TR devices for producing a signal representative to the sum of the reflected energies in all four horns of said diamond antenna feed.
References Cited (Backward Citations)
US3568190A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-04-16 | 1976-10-16 | 1977-04-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-04-16 | 1980-10-16 | 1981-04-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-04-16 | 1984-10-16 | 1985-04-17 | $7700.00 | Window Closed / Lapsed |