US3271773A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Mode-separation circular waveguide and antennas using same
Assignee: Hazeltine Research Inc
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Filing: 1964-01-22
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Granted: 1966-09-06
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Expires: 1984-01-22
Abstract
No abstract record available.
Inventors
- 👤 Harold A Wheeler
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 11:59
CPC Classifications
H; H01; H01P; H01P1/00; H01P1/16
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
160 words
A MODE-SEPARATION WAVEGUIDE FOR PROPAGATING ENERGY IN A PREDETERMINED FREQUENCY RANGE IN A SINGLE MODE COMPRISING: COUPLING MEANS FOR SUPPLYING A SIGNAL IN A PREDETERMINED FREQUENCY RANGE; A HOLLOW CYLINRICAL MEMBER HAVING A CONDUCTIVE INNER SURFACE FOR PROPAGATING SAID SUPPLIED SIGNAL IN A CIRCULARLY POLARIZED WAVE AND HAVING A CROSS-SECTION WHICH PERMITS PROPAGATION OF THE DOMINANT MODE AND CUTS OFF ALL OTHER MODES; AND A DIELECTRIC MEDIUM INSIDE SAID CYLINDER COMPRISING TRANSVERSE REGIONS HAVING A FIRST DIELECTRIC CONSTANT SEPARATED BY TRANSVERSE REGIONS HAVING A LOWER DIELECTRIC CONSTANT ARRANGED SO THAT THE EFFECTIVE DIELECTRIC CONSTANT FOR TRANSVERSE ELECTRIC FIELS COMPONENTS IS HIGHER THAN THE EFFECTIVE DIELECTRIC CONSTANT FOR AXIAL ELECTRIC FIELD COMPONENTS BY PREDETERMINED FACTOR; THE WAVEGUIDE BEING SO CONSTRUCTED AND ARRANGED THAT ONLY THE DOMINANT MODE IS PROPAGATED AND THERE IS INCREASED SEPARATION BETWEEN THE CUTOFF FREQUENCIES OF THE DOMINANT MODE AND THE SECOND MODE, AS COMPARED TO THE SEPARATION IN A CIRCULAR WAVEGUIDE COMPLETELY FILLED WITH ANY HOMOGENEOUS DIELECTRIC
Claim 2
Dependent Claim
160 words
A MODE-SEPARATION WAVEGUIDE FOR PROPAGATING ENERGY IN A PREDETERMINED FREQUENCY RANGE IN A SINGLE MODE COMPRISING: COUPLING MEANS FOR SUPPLYING A SIGNAL IN A PREDETERMINED FREQUENCY RANGE; A HOLLOW CYLINRICAL MEMBER HAVING A CONDUCTIVE INNER SURFACE FOR PROPAGATING SAID SUPPLIED SIGNAL IN A CIRCULARLY POLARIZED WAVE AND HAVING A CROSS-SECTION WHICH PERMITS PROPAGATION OF THE DOMINANT MODE AND CUTS OFF ALL OTHER MODES; AND A DIELECTRIC MEDIUM INSIDE SAID CYLINDER COMPRISING TRANSVERSE REGIONS HAVING A FIRST DIELECTRIC CONSTANT SEPARATED BY TRANSVERSE REGIONS HAVING A LOWER DIELECTRIC CONSTANT ARRANGED SO THAT THE EFFECTIVE DIELECTRIC CONSTANT FOR TRANSVERSE ELECTRIC FIELS COMPONENTS IS HIGHER THAN THE EFFECTIVE DIELECTRIC CONSTANT FOR AXIAL ELECTRIC FIELD COMPONENTS BY PREDETERMINED FACTOR; THE WAVEGUIDE BEING SO CONSTRUCTED AND ARRANGED THAT ONLY THE DOMINANT MODE IS PROPAGATED AND THERE IS INCREASED SEPARATION BETWEEN THE CUTOFF FREQUENCIES OF THE DOMINANT MODE AND THE SECOND MODE, AS COMPARED TO THE SEPARATION IN A CIRCULAR WAVEGUIDE COMPLETELY FILLED WITH ANY HOMOGENEOUS DIELECTRIC
References Cited (Backward Citations)
US3066269A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-09-05 | 1970-03-07 | 1970-09-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-09-05 | 1974-03-07 | 1974-09-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-09-05 | 1978-03-07 | 1978-09-06 | $7700.00 | Window Closed / Lapsed |