US3683374A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Radar antenna arrangement
Assignee: Siemens AG
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Filing: 1970-08-10
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Granted: 1972-08-08
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Expires: 1990-08-10
Abstract
Abstract A radar antenna utilizing primarily antenna having a pencilshaped radiation characteristic and two secondary radar antennas which supplement the primary antenna and are disposed adjacent the periphery of the primary antenna, the secondary antenna each having a fan-shaped radiation characteristic, the secondary antennas being of such shape and so arranged as to effect an intersection of the fan-shaped beams thereof to form a joint overlapping range, one of the secondary antennas being utilized for transmission of interrogation signals and the other secondary antenna being utilized for the reception of reply signals whereby the transmission-reception of such signals is effected in such overlapping range. One of the secondary antennas may be disposed adjacent the upper or lower edge of the primary antenna and the other secondary antenna disposed adjacent a side edge of the primary antenna, and each of the secondary antennas may be provided with a radiator for side-lobe suppression.
Inventors
- 👤 Peter Honold
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 23:58
CPC Classifications
G; G01; G01S; G01S13/00; G01S13/74; G01S13/76; G01S13/762; G01S13/87; G01S13/872; H; H01; H01Q; H01Q21/00; H01Q21/28
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
113 words
In a radar antenna arrangement utilizing a primary radar antenna and two secondary radar antennas which are supplemental to the primary antenna and disposed adjacent the periphery of the primary antenna, the combination of the primary antenna having a pencil-shaped radiation characteristic and the secondary antennas each having a fan-shaped radiation characteristic, said secondary antennas being arranged to effect an intersection of radiation paths to form a joint overlapping range for the two fan beams thereof, one of said secondary antennas comprising a transmitting antenna for the radiation of interrogation signals, and the other secondary antenna comprising a receiving antenna for the reply signals, whereby cooperable transmission-reception is effected in said overlapping range.
Claim 2
Dependent Claim
113 words
In a radar antenna arrangement utilizing a primary radar antenna and two secondary radar antennas which are supplemental to the primary antenna and disposed adjacent the periphery of the primary antenna, the combination of the primary antenna having a pencil-shaped radiation characteristic and the secondary antennas each having a fan-shaped radiation characteristic, said secondary antennas being arranged to effect an intersection of radiation paths to form a joint overlapping range for the two fan beams thereof, one of said secondary antennas comprising a transmitting antenna for the radiation of interrogation signals, and the other secondary antenna comprising a receiving antenna for the reply signals, whereby cooperable transmission-reception is effected in said overlapping range.
Claim 3
Dependent Claim
72 words
A radar antenna arrangement according to claim 1, wherein the primary radar antenna has a square configuration and a pencil-shaped radiation characteristic, one of the additional secondary radar antennas, in the form of a line array, being mounted adjacent a horizontal peripheral edge of the primary radar antenna, and the other secondary radar antenna, in the form of a line array, being mounted adjacent a side edge of the primary radar antenna.
Claim 4
Dependent Claim
36 words
A radar antenna arrangement according to claim 1, wherein one of the secondary antennas is constructed to produce a horizontal fan beam, and the other secondary radar antenna is constructed to produce a vertical fan beam.
Claim 5
Dependent Claim
31 words
A radar arrangement according to claim 3, wherein the primary radar antenna has a square configuration and is constructed to provide a pencil-shaped radiation characteristic with electronic beam shifting (phased array).
Claim 6
Dependent Claim
24 words
A radar antenna arrangement according to claim 3, wherein at least one of said secondary antennas is constructed for electronic beam shifting (phased array).
Claim 7
Dependent Claim
54 words
A radar antenna arrangement according to claim 3, wherein both of said secondary antennas are constructed for electronic beam shifting (phased array), one of said secondary antennas being mounted adjacent a horizontal edge of the primary antenna, and the other of said secondary antennas being mounted adjacent a vertical edge of the primary antenna.
Claim 8
Dependent Claim
101 words
A radar antenna arrangement according to claim 1, wherein each secondary radar antenna is provided with a radiator for the suppression of side lobes (SLS-side-lobe suppression), radiator means for the side-lobe interrogation suppression on the interrogation path, cooperable with the associated secondary radar antenna employed for transmission, means for alternating transmission over said secondary transmitting antenna and said radiator means (ISLS-interrogation path side-lobe suppression), radiator means for the side-lobe suppression on the reply path cooperable with the secondary antenna employed for receiving, and means for alternating reception over said secondary receiving antenna and said last-mentioned radiator means (RSLS-reply path side-lobe suppression).
Claim 9
Dependent Claim
72 words
A radar antenna arrangement according to claim 7, wherein the primary radar antenna has a square configuration and a pencil-shaped radiation characteristic, one of the additional secondary radar antennas, in the form of a line array, being mounted adjacent a horizontal peripheral edge of the primary radar antenna, and the other secondary radar antenna, in the form of a line array, being mounted adjacent a side edge of the primary radar antenna.
Claim 10
Dependent Claim
37 words
A radar antenna arrangement according to claim 7, wherein one of the secondary radar antennas is constructed to produce a horizontal fan beam, and the other secondary radar antenna is constructed to produce a vertical fan beam.
Claim 11
Dependent Claim
77 words
A radar antenna arrangement according to claim 9, wherein the primary radar antenna has a square configuration and is constructed to provide a pencil-shaped radiation characteristic with electronic beam shifting (phased ray), both of said secondary antennas being constructed for electronic beam shifting (phased ray), one of said secondary antennas being mounted adjacent a horizontal edge of the primary antenna, and the other of said secondary antennas being mounted adjacent a vertical edge of the primary antenna.
References Cited (Backward Citations)
US2966675A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-08-08 | 1976-02-07 | 1976-08-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-08-08 | 1980-02-07 | 1980-08-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-08-08 | 1984-02-07 | 1984-08-08 | $7700.00 | Window Closed / Lapsed |