US3321718A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Coupler for waveguides utilizing ferrimagnetic material for mode conversion
Assignee: Compagnie Francaise Thomson Houston SA
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Filing: 1965-10-25
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Granted: 1967-05-23
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Expires: 1985-10-25
Abstract
No abstract record available.
Inventors
- 👤 Roger S Alfandari
- 👤 Pauchard Robert
- 👤 Pircher Georges
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 09:20
CPC Classifications
H; H01; H01P; H01P1/00; H01P1/16
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
119 words
IN A MICROWAVE COUPLING DEVICE INCLUDING A RECTANGULAR WAVE-GUIDE SECTION AND A MEMBER COMPRISING FERRIMAGNETIC MATERIAL, SAID MEMBER BEING POSITIONED IN THE WAVEGUIDE SECTION ADJACENT A WALL THEREOF AND BEING SUBJECTED TO A MAGNETIC FIELD HAVING A COMPONENT NORMAL TO THE PLANE OF POLARIZATION OF A MICROWAVE OF ONE TE MODE IN SAID GUIDE WHEREBY ENERGY REACHING ONE END OF SAID DEVICE IN THE FORM OF A WAVE OF SAID ONE TE MODE WILL BE TRANSFERRED TO THE OTHER END OF SAID DEVICE IN THE FORM OF A WAVE OF ANOTHER TE MODE, THE IMPROVEMENT ACCORDING TO WHICH SAID MEMBER CONSISTS IN PART OF A LOW-LOSS DIELECTRIC MATERIAL HAVING A DIELECTRIC CONSTANT CLOSE TO THAT OF SAID FERRIMAGNETIC MATERIAL.
Claim 2
Dependent Claim
119 words
IN A MICROWAVE COUPLING DEVICE INCLUDING A RECTANGULAR WAVE-GUIDE SECTION AND A MEMBER COMPRISING FERRIMAGNETIC MATERIAL, SAID MEMBER BEING POSITIONED IN THE WAVEGUIDE SECTION ADJACENT A WALL THEREOF AND BEING SUBJECTED TO A MAGNETIC FIELD HAVING A COMPONENT NORMAL TO THE PLANE OF POLARIZATION OF A MICROWAVE OF ONE TE MODE IN SAID GUIDE WHEREBY ENERGY REACHING ONE END OF SAID DEVICE IN THE FORM OF A WAVE OF SAID ONE TE MODE WILL BE TRANSFERRED TO THE OTHER END OF SAID DEVICE IN THE FORM OF A WAVE OF ANOTHER TE MODE, THE IMPROVEMENT ACCORDING TO WHICH SAID MEMBER CONSISTS IN PART OF A LOW-LOSS DIELECTRIC MATERIAL HAVING A DIELECTRIC CONSTANT CLOSE TO THAT OF SAID FERRIMAGNETIC MATERIAL.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-05-22 | 1970-11-21 | 1971-05-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-05-22 | 1974-11-21 | 1975-05-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-05-22 | 1978-11-21 | 1979-05-23 | $7700.00 | Window Closed / Lapsed |