US3109996A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Waveguide feed with septum for directional antenna
Assignee: Individual
•
Filing: 1960-04-29
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Granted: 1963-11-05
•
Expires: 1980-04-29
Abstract
No abstract record available.
Inventors
- 👤 Philip J Allen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 04:03
CPC Classifications
H; H01; H01Q; H01Q13/00; H01Q13/02
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
92 words
IN COMBINATION, A RECTANGULAR WAVEGUIDE HAVING A DIMENSION OF THE ORDER OF A WAVELENGTH IN ONE PLANE, A SEPTUM DISPOSED IN SAID WAVEGUIDE IN SAID PLANE, SAID SEPTUM EXTENDING ACROSS SAID WAVEGUIDE AND CONNECTED TO THE WAVEGUIDE WALLS PERPENDICULAR TO SAID ONE PLANE, FIRST COUPLING MEANS FOR COUPLING TO THE TE10 MODE IN SAID WAVEGUIDE, SECOND COUPLING MEANS FOR COUPLING TO THE TE20 MODE IN SAID WAVEGUIDE, A COAXIAL MODE COUPLER HAVING CENTRAL AND OUTER CONDUCTORS, AND A STRIP LINE CONNECTING THE CENTRAL CONDUCTOR OF SAID COAXIAL MODE COUPLER TO THE SEPTUM.
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) | 1966-11-04 | 1967-05-06 | 1967-11-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-11-04 | 1971-05-06 | 1971-11-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-11-04 | 1975-05-06 | 1975-11-05 | $7700.00 | Window Closed / Lapsed |