US3737899A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Phased array antenna controller
Assignee: Raytheon Co
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Filing: 1971-02-01
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Granted: 1973-06-05
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Expires: 1991-02-01
Abstract
Abstract A phased array antenna arrangement which includes a plurality of independently operable phased arrays is disclosed. The phase shifters in each such array are connected to appropriate ones of a set of driver amplifiers through an electronic switching arrangement which is operable as desired to permit only the phase shifters in a selected one, or selected ones, of the phased arrays to be actuated.
Inventors
- 👤 C Georgopoulos
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 04:32
CPC Classifications
H; H01; H01Q; H01Q3/00; H01Q3/26; H01Q3/30; H01Q3/34; H01Q3/40
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
182 words
In a radar system utilizing a plurality of like phased array antenna assemblies, each one thereof including a matrix of antenna elements and associated semiconductor phase shifters adapted to form and direct a beam of radio frequency energy, each one of such phase shifters incorporating p-i-n diodes actuable by a different one of a plurality of driver amplifiers, the improvement comprising: a. means for selectively enabling the p-i-n diodes incorporated in each different matrix of semi-conductor diode phase shifters to be actuated, such means including at least one different silicon controlled rectifier disposed in circuit between all of the driver amplifiers and a first electrode of all of the p-i-n diodes in each different matrix of semiconductor phase shifters; b. means for connecting a second electrode of corresponding p-in diodes in each different matrix of semiconductor phase shifters to each different one of the driver amplifiers; and c. control signal generating means for providing a control signal to the at least one different silicon control rectifier in circuit with the p-i-n diodes in the matrix of semiconductor phase shifters to be actuated.
Claim 2
Dependent Claim
182 words
In a radar system utilizing a plurality of like phased array antenna assemblies, each one thereof including a matrix of antenna elements and associated semiconductor phase shifters adapted to form and direct a beam of radio frequency energy, each one of such phase shifters incorporating p-i-n diodes actuable by a different one of a plurality of driver amplifiers, the improvement comprising: a. means for selectively enabling the p-i-n diodes incorporated in each different matrix of semi-conductor diode phase shifters to be actuated, such means including at least one different silicon controlled rectifier disposed in circuit between all of the driver amplifiers and a first electrode of all of the p-i-n diodes in each different matrix of semiconductor phase shifters; b. means for connecting a second electrode of corresponding p-in diodes in each different matrix of semiconductor phase shifters to each different one of the driver amplifiers; and c. control signal generating means for providing a control signal to the at least one different silicon control rectifier in circuit with the p-i-n diodes in the matrix of semiconductor phase shifters to be actuated.
References Cited (Backward Citations)
US3413633A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-06-04 | 1976-12-04 | 1977-06-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-06-04 | 1980-12-04 | 1981-06-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-06-04 | 1984-12-04 | 1985-06-05 | $7700.00 | Window Closed / Lapsed |