US3105236A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Duplex transmit-receive antenna system employing a dipole and a loop
Assignee: Douglas Aircraft Co Inc
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Filing: 1960-03-17
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Granted: 1963-09-24
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Expires: 1980-03-17
Abstract
No abstract record available.
Inventors
- 👤 Willys W Mccloud
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 00:31
CPC Classifications
H; H01; H01Q; H01Q21/00; H01Q21/29
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
160 words
IN COMBINATION WITH AN AIRCRAFT, A TRANSMIT-RECEIVE ANTENNA SYSTEM COMPRISING: A LOOP ANTENNA, SAID ANTENNA BEING MOUNTED FOR ROTATION RELATIVE TO AND DISPOSED TO EXTEND FROM AN EXTERIOR SURFACE OF THE AIRCRAFT; A SHIELDING STRUCTURE SURROUNDING SAID LOOP ANTENNA, SAID SHIELDING STRUCTURE HAVING A GAP THEREIN DISPOSED SUBSTANTIALLY ON AN AXIS OF ROTATION OF SAID LOOP ANTENNA; MEANS FOR COUPLING SAID LOOP ANTENNA TO A RECEIVING INSTRUMENTALITY; A DIPOLE ANTENNA POSITIONED ON SAID AXIS OF ROTATION OF SAID LOOP ANTENNA AND LOCATED ENTIRELY WITHIN THE CONFINES OF SAID LOOP ANTENNA, SAID LOOP ANTENNA AND SAID DIPOLE ANTENNA LYING IN A COMMON PLANE NORMAL TO SAID SURFACE OF SAID AIRCRAFT; AND MEANS FOR COUPLING SAID DIPOLE ANTENNA TO A SIGNAL TRANSMITTING INSTRUMENTALITY, SAID LOCATION OF SAID DIPOLE ANTENNA WITHIN THE CONFINES OF SAID LOOP ANTENNA AND IN RELATION TO SAID GAP PERMITTING SIMULTANEOUS TRANSMIT-RECEIVE FUNCTIONS ON A COMMON FREQUENCY WITH A MINIMUM OF INTERCOUPLING BETWEEN SAID LOOP AND SAID DIPOLE ANTENNAE.
Claim 2
Dependent Claim
160 words
IN COMBINATION WITH AN AIRCRAFT, A TRANSMIT-RECEIVE ANTENNA SYSTEM COMPRISING: A LOOP ANTENNA, SAID ANTENNA BEING MOUNTED FOR ROTATION RELATIVE TO AND DISPOSED TO EXTEND FROM AN EXTERIOR SURFACE OF THE AIRCRAFT; A SHIELDING STRUCTURE SURROUNDING SAID LOOP ANTENNA, SAID SHIELDING STRUCTURE HAVING A GAP THEREIN DISPOSED SUBSTANTIALLY ON AN AXIS OF ROTATION OF SAID LOOP ANTENNA; MEANS FOR COUPLING SAID LOOP ANTENNA TO A RECEIVING INSTRUMENTALITY; A DIPOLE ANTENNA POSITIONED ON SAID AXIS OF ROTATION OF SAID LOOP ANTENNA AND LOCATED ENTIRELY WITHIN THE CONFINES OF SAID LOOP ANTENNA, SAID LOOP ANTENNA AND SAID DIPOLE ANTENNA LYING IN A COMMON PLANE NORMAL TO SAID SURFACE OF SAID AIRCRAFT; AND MEANS FOR COUPLING SAID DIPOLE ANTENNA TO A SIGNAL TRANSMITTING INSTRUMENTALITY, SAID LOCATION OF SAID DIPOLE ANTENNA WITHIN THE CONFINES OF SAID LOOP ANTENNA AND IN RELATION TO SAID GAP PERMITTING SIMULTANEOUS TRANSMIT-RECEIVE FUNCTIONS ON A COMMON FREQUENCY WITH A MINIMUM OF INTERCOUPLING BETWEEN SAID LOOP AND SAID DIPOLE ANTENNAE.
References Cited (Backward Citations)
US1496155A
Cited
US1589344A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-09-23 | 1967-03-25 | 1967-09-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-09-23 | 1971-03-25 | 1971-09-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-09-23 | 1975-03-25 | 1975-09-24 | $7700.00 | Window Closed / Lapsed |