US3267395A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Microwave phase shifter
Assignee: Raytheon Co
•
Filing: 1961-10-31
•
Granted: 1966-08-16
•
Expires: 1981-10-31
Abstract
No abstract record available.
Inventors
- 👤 Harmon H Keeling
- 👤 Hudspeth Thomas
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 03:13
CPC Classifications
H; H01; H01P; H01P1/00; H01P1/18; H01P1/19
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
178 words
A MICROWAVE PHASE SHIFTER COMPRISING: A DIRECTIONAL COUPLER HAVING AN INPUT TERMINAL TO RECEIVE AN INPUT MICROWAVE SIGNAL, AN OUTPUT TERMINAL AND A PAIR OF INTERMEDIATE TERMINALS; A PAIR OF 1/8 WAVELENGTH SECTIONS OF HIGH IMPEDANCE TRANSMISSION LINE, EACH HAVING ONE END INDIVIDUALLY COUPLED TO A DIFFERENT ONE OF SAID INTERMEDIATE TERMINALS; A PAIR OF 1/4 WAVELENGTH SECTIONS OF LOW IMPEDANCE TRANSMISSION LINE, EACH HAVING ONE END INDIVIDUALLY COUPLED TO THE OTHER END OF A DIFFERENT ONE OF SAID 1/8 WAVELENGTH SECTIONS OF TRANSMISSION LINE; A SHORT CIRCUIT MEMBER DISPOSED AT THE OTHER END OF EACH OF SAID 1/4 WAVELENGTH SECTIONS OF TRANSMISSION LINE; A PAIR OF FERRITE ELEMENTS, EACH BEING DISPOSED WITHIN A DIFFERENT ONE OF SAID 1/4 WAVELENGTH SECTIONS OF TRANSMISSION LINE ADJACENT SAID SHORT CIRCUIT MEMBERS; AND MAGNETIC FIELD PRODUCING MEANS JUXTAPOSED WITH SAID 1/4 WAVELENGTH SECTIONS OF TRANSMISSION LINE AND DISPOSED TO PROVIDE A MAGNETIC FIELD OF PREDETERMINED INTENSITY THROUGH SAID FERRITE ELEMENTS IN A DIRECTION PERPENDICULAR TO THE MAGNETIC FIELD OF A MICROWAVE SIGNAL PROPAGATED IN SAID 1/4 WAVELENGTH SECTIONS OF TRANSMISSION LINE.
Claim 2
Dependent Claim
178 words
A MICROWAVE PHASE SHIFTER COMPRISING: A DIRECTIONAL COUPLER HAVING AN INPUT TERMINAL TO RECEIVE AN INPUT MICROWAVE SIGNAL, AN OUTPUT TERMINAL AND A PAIR OF INTERMEDIATE TERMINALS; A PAIR OF 1/8 WAVELENGTH SECTIONS OF HIGH IMPEDANCE TRANSMISSION LINE, EACH HAVING ONE END INDIVIDUALLY COUPLED TO A DIFFERENT ONE OF SAID INTERMEDIATE TERMINALS; A PAIR OF 1/4 WAVELENGTH SECTIONS OF LOW IMPEDANCE TRANSMISSION LINE, EACH HAVING ONE END INDIVIDUALLY COUPLED TO THE OTHER END OF A DIFFERENT ONE OF SAID 1/8 WAVELENGTH SECTIONS OF TRANSMISSION LINE; A SHORT CIRCUIT MEMBER DISPOSED AT THE OTHER END OF EACH OF SAID 1/4 WAVELENGTH SECTIONS OF TRANSMISSION LINE; A PAIR OF FERRITE ELEMENTS, EACH BEING DISPOSED WITHIN A DIFFERENT ONE OF SAID 1/4 WAVELENGTH SECTIONS OF TRANSMISSION LINE ADJACENT SAID SHORT CIRCUIT MEMBERS; AND MAGNETIC FIELD PRODUCING MEANS JUXTAPOSED WITH SAID 1/4 WAVELENGTH SECTIONS OF TRANSMISSION LINE AND DISPOSED TO PROVIDE A MAGNETIC FIELD OF PREDETERMINED INTENSITY THROUGH SAID FERRITE ELEMENTS IN A DIRECTION PERPENDICULAR TO THE MAGNETIC FIELD OF A MICROWAVE SIGNAL PROPAGATED IN SAID 1/4 WAVELENGTH SECTIONS OF TRANSMISSION LINE.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-08-15 | 1970-02-14 | 1970-08-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-08-15 | 1974-02-14 | 1974-08-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-08-15 | 1978-02-14 | 1978-08-16 | $7700.00 | Window Closed / Lapsed |