US3308468A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Monopulse antenna system providing independent control in a plurality of modes of operation
Assignee: Hazeltine Research Inc
•
Filing: 1961-05-22
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Granted: 1967-03-07
•
Expires: 1981-05-22
Abstract
No abstract record available.
Inventors
- 👤 Peter W Hannan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 18:33
CPC Classifications
H; H01; H01Q; H01Q25/00; H01Q25/04; G; G01; G01S; G01S13/00; G01S13/02; G01S13/06; G01S13/42; G01S13/44; G01S13/4409; H01Q19/00; H01Q19/06; H01Q19/08
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
151 words
A MONOPULSE ANTENNA SYSTEM PROVIDING INDEPENDENT CONTROL IN A SUM AND TWO DIFFERENCE MODES OF OPERATION COMPRISING: A CENTRAL GROUP OF FOUR ANTENNAS ARRANGED TO SIMULTANEOUSLY FORM UPPER AND LOWER PAIRS OF ANTENNAS AND LEFT AND RIGHT PAIRS OF ANTENNAS; AN OUTER GROUP OF ANTENNAS INCLUDING ANTENNAS ABOVE, BELOW, RIGHT, AND LEFT OF SAID FOUR CENTRAL ANTENNAS; A FIRST GROUP OF HYBRID JUNCTIONS COMBINING SIGNALS FROM THE FOUR CENTRAL ANTENNAS TO FORM A FINAL SUM MODE SIGNAL, A PRELIMINARY ELEVATION DIFFERENCE MODE SIGNAL, AND A PRELIMINARY AZIMUTH DIFFERENCE MODE SIGNAL; A SECOND GROUP OF HYDRID JUNCTIONS COMBINING SIGNALS FROM THE UPPER AND LOWER OUTER ANTENNAS WITH SAID PRELIMINARY ELEVATION DIFFERENCE MODE SIGNAL TO FORM A FINAL ELEVATION DIFFERENCE MODE SIGNAL; AND A THIRD GROUP OF HYBRID JUNCTIONS COMBINING SIGNALS FROM THE RIGHT AND LEFT OUTER ANTENNAS WITH SAID PRELIMINARY AZIMUTH DIFFERENCE MODE SIGNAL TO FORM A FINAL AZIMUTH DIFFERENCE MODE SIGNAL.
Claim 2
Dependent Claim
151 words
A MONOPULSE ANTENNA SYSTEM PROVIDING INDEPENDENT CONTROL IN A SUM AND TWO DIFFERENCE MODES OF OPERATION COMPRISING: A CENTRAL GROUP OF FOUR ANTENNAS ARRANGED TO SIMULTANEOUSLY FORM UPPER AND LOWER PAIRS OF ANTENNAS AND LEFT AND RIGHT PAIRS OF ANTENNAS; AN OUTER GROUP OF ANTENNAS INCLUDING ANTENNAS ABOVE, BELOW, RIGHT, AND LEFT OF SAID FOUR CENTRAL ANTENNAS; A FIRST GROUP OF HYBRID JUNCTIONS COMBINING SIGNALS FROM THE FOUR CENTRAL ANTENNAS TO FORM A FINAL SUM MODE SIGNAL, A PRELIMINARY ELEVATION DIFFERENCE MODE SIGNAL, AND A PRELIMINARY AZIMUTH DIFFERENCE MODE SIGNAL; A SECOND GROUP OF HYDRID JUNCTIONS COMBINING SIGNALS FROM THE UPPER AND LOWER OUTER ANTENNAS WITH SAID PRELIMINARY ELEVATION DIFFERENCE MODE SIGNAL TO FORM A FINAL ELEVATION DIFFERENCE MODE SIGNAL; AND A THIRD GROUP OF HYBRID JUNCTIONS COMBINING SIGNALS FROM THE RIGHT AND LEFT OUTER ANTENNAS WITH SAID PRELIMINARY AZIMUTH DIFFERENCE MODE SIGNAL TO FORM A FINAL AZIMUTH DIFFERENCE MODE SIGNAL.
References Cited (Backward Citations)
US2830288A
Cited
US2751586A
Cited
US2818549A
Cited
US2759154A
Cited
US2931033A
Cited
US2925595A
Cited
US2918673A
Cited
FR1244969A
Cited
US3045238A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-03-06 | 1970-09-05 | 1971-03-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-03-06 | 1974-09-05 | 1975-03-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-03-06 | 1978-09-05 | 1979-03-07 | $7700.00 | Window Closed / Lapsed |