US3259903A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Mode-separation waveguide loaded with spaced metal discs and antennas using same
Assignee: Hazeltine Research Inc
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Filing: 1964-03-20
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Granted: 1966-07-05
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Expires: 1984-03-20
Abstract
No abstract record available.
Inventors
- 👤 David S Lerner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 09:44
CPC Classifications
H; H01; H01P; H01P1/00; H01P1/16
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
122 words
A MODE-SEPARATION CIRCULAR WAVEGUIDE FOR HIGH POWER APPLICATIONS COMPRISING: A HOLLOW METALLIC CYLINDER OF CIRCULAR INTERNAL CROSSSECTION; A PLURALITY OF DIELECTRIC DISC SHAPED TO FIT TRANSVERSELY INSIDE SAID CYLINDER; AND A METALLIC CIRCULAR DISC MOUNTED ON EACH SIDE OF EACH DIELECTRIC DISC WITH A METALLIC CONNECTION BEF TWEEN THE PAIR OF METALLIC DISCS ON EACH DIELECTRIC DISC, EACH METALLIC DISC HAVING A SMOOTH EDGE OF THICKNESS SUFFICIENT TO PREVENT ARCING AT THE INTENDED OPERATIONAL POWER LEVELS; THE WAVEGUIDE BEING SO CONSTRUCTED AND ARRANGED THAT THERE IS INCREASED SEPARATION BETWEEN THE CUTOFF FREQUENCY OF THE DOMINANT (TE-11) MODE AND THE CUTOFF FREQUENCIES OF BOTH THE SECOND (TM-01) AND THIRD (TE-21) MODES, AS COMPARED TO A CIRCULAR WAVEGUIDE COMPLETELY FILLED WITH ANY HOMOGENEOUS DIELECTRIC,
Claim 2
Dependent Claim
122 words
A MODE-SEPARATION CIRCULAR WAVEGUIDE FOR HIGH POWER APPLICATIONS COMPRISING: A HOLLOW METALLIC CYLINDER OF CIRCULAR INTERNAL CROSSSECTION; A PLURALITY OF DIELECTRIC DISC SHAPED TO FIT TRANSVERSELY INSIDE SAID CYLINDER; AND A METALLIC CIRCULAR DISC MOUNTED ON EACH SIDE OF EACH DIELECTRIC DISC WITH A METALLIC CONNECTION BEF TWEEN THE PAIR OF METALLIC DISCS ON EACH DIELECTRIC DISC, EACH METALLIC DISC HAVING A SMOOTH EDGE OF THICKNESS SUFFICIENT TO PREVENT ARCING AT THE INTENDED OPERATIONAL POWER LEVELS; THE WAVEGUIDE BEING SO CONSTRUCTED AND ARRANGED THAT THERE IS INCREASED SEPARATION BETWEEN THE CUTOFF FREQUENCY OF THE DOMINANT (TE-11) MODE AND THE CUTOFF FREQUENCIES OF BOTH THE SECOND (TM-01) AND THIRD (TE-21) MODES, AS COMPARED TO A CIRCULAR WAVEGUIDE COMPLETELY FILLED WITH ANY HOMOGENEOUS DIELECTRIC,
Claim 3
Dependent Claim
116 words
A WIDE-BAND STEERABLE-BEAM ARRAY ANTENNA COMPRISING: AN ARRAY OF SIMILAR HOLLOW CYLINDRICAL MEMBERS HAVING CONDUCTIVE INNER SURFACES CAPABLE OF PROPAGATING CIRCULARLY POLARIZED WAVES; MEANS COUPLED TO SAID CYLINDRICAL MEMBERS FOR SUPPLYING SIGNALS OF VARIABLE RELATIVE PHASE SO THAT THE VARIATIONS OF PHASE OF SUCH SIGNALS TENDS TO GIVE RISE TO PROPAGATION IN AN UNDESIRED MODE; AND A PLURALITY OF THIN CONDUCTIVE MEMBER MOUNTED TRANSVERSELY INSIDE EACH OF SAID CYLINDRICAL MEMBERS ON DIELECTRIC SUPPORT MEMBERS; THE ARRANGEMENT AND CONSTRUCTION BEING SUCH THAT THERE IS INCREASED SEPARATION BETWEEN THE CUTOFF FREQUENCY OF THE DOMINANT MODE AND THE CUTOFF FREQUENCIES OF BOTH THE SECOND AND THIRD MODES, AS COMPARED TO A CIRCULAR WAVEGUIDE COMPLETELY FILLED WITH ANY HOMOGENEOUS DIELECTRIC.
Claim 4
Dependent Claim
116 words
A WIDE-BAND STEERABLE-BEAM ARRAY ANTENNA COMPRISING: AN ARRAY OF SIMILAR HOLLOW CYLINDRICAL MEMBERS HAVING CONDUCTIVE INNER SURFACES CAPABLE OF PROPAGATING CIRCULARLY POLARIZED WAVES; MEANS COUPLED TO SAID CYLINDRICAL MEMBERS FOR SUPPLYING SIGNALS OF VARIABLE RELATIVE PHASE SO THAT THE VARIATIONS OF PHASE OF SUCH SIGNALS TENDS TO GIVE RISE TO PROPAGATION IN AN UNDESIRED MODE; AND A PLURALITY OF THIN CONDUCTIVE MEMBER MOUNTED TRANSVERSELY INSIDE EACH OF SAID CYLINDRICAL MEMBERS ON DIELECTRIC SUPPORT MEMBERS; THE ARRANGEMENT AND CONSTRUCTION BEING SUCH THAT THERE IS INCREASED SEPARATION BETWEEN THE CUTOFF FREQUENCY OF THE DOMINANT MODE AND THE CUTOFF FREQUENCIES OF BOTH THE SECOND AND THIRD MODES, AS COMPARED TO A CIRCULAR WAVEGUIDE COMPLETELY FILLED WITH ANY HOMOGENEOUS DIELECTRIC.
References Cited (Backward Citations)
US2865008A
Cited
US3025478A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-07-04 | 1970-01-03 | 1970-07-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-07-04 | 1974-01-03 | 1974-07-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-07-04 | 1978-01-03 | 1978-07-05 | $7700.00 | Window Closed / Lapsed |