US3308469A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Multi-mode antenna system
Assignee: Compagnie Francaise Thomson Houston SA
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Filing: 1963-10-14
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Granted: 1967-03-07
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Expires: 1983-10-14
Abstract
No abstract record available.
Inventors
- 👤 Serge V Drabowitch
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 10:06
CPC Classifications
H; H01; H01Q; H01Q25/00; H01Q25/04; H01J; H01J25/00; H01J25/02; H01J25/10; H01J25/12
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
119 words
AN ANTENNA SYSTEM COMPRISING WAVEGUIDE MEANS HAVING AN OUTPUT END DEFINING RADIATING APERTURE MEANS, A PLURALITY OF EXCITERS CONNECTED WITH AN INPUT END OF SAID WAVEGUIDE MEANS FOR FEEDING THERETO INPUT WAVE ENERGY OF SEPARATELY SELECTABLE MODE, PHASE AND AMPLITUDE CHARACTERISTICS FOR PROPAGATION TO SAID RADIATING APERTURE MEANS, SAID WAVEGUIDE MEANS BEING DIMENSIONED FOR SIMULTANEOUS PROPAGATION OF DIFFERENT MODES OF RADIATION FROM SAID EXCITERS TO SAID APERTURE MEANS, WAVEABSORPTION MEANS WITHIN SAID WAVEGUIDE MEANS POSITIONED AND ARRANGED FOR RECEIVING AND ABSORBING STRAY ENERGY FED BACK INTO THE WAVEGUIDE MEANS FROM SAID RADIATING APERTURE MEANS, AND A PLUALITY OF PARALLEL PROPAGATION CHANNELS AT SAID OUTPUT END HAVING INPUTS LONGITUDINALLY SPACED FROM AND RESPECTIVELY CONFRONTING SAID EXCITERS AND SAID WAVE-ABSORPTION MEANS.
References Cited (Backward Citations)
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 |