US3697998A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Multiple beam array antenna
Assignee: SP-MICROWAVE Inc
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Filing: 1970-10-05
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Granted: 1972-10-10
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Expires: 1990-10-05
Abstract
Abstract A high frequency energy array antenna conforming to the contour of a craft comprises a plurality of antenna array elements for providing partial collimation of multiple or scanned radiation or reception patterns. The antenna array cooperatively and selectively operates in energy exchanging relation with a geodesic energy distribution system for further collimation of the multiple or scanning radiation or reception patterns.
Inventors
- 👤 Arthur H Schaufelberger
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 11:12
CPC Classifications
H; H01; H01Q; H01Q19/00; H01Q19/06; H01Q19/062; H01Q25/00; H01Q3/00; H01Q3/24; H01Q3/245
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
207 words
Apparatus having focal properties for collimation and transfer of high frequency energy comprising: spaced conducting wall means having nesting dome-shaped surfaces with a common axis of substantial symmetry and defining therebetween a geodesic energy propagation means, opposed parallel plate transmission line means in direct energy exchanging relation with said geodesic energy propagation means, each said opposed parallel plate transmission line means having an arcuate open end remote from said geodesic energy propagation means, said geodesic energy propagation means, said parallel plate transmission line means, and said arcuate ends forming a composite energy propagation structure having a plane of substantial mirror symmetry, first transmission line means in energy exchanging relation at a first of said arcuate ends with said parallel plate transmission line means, said first transmission line means comprising a plurality of hollow wave guide means each having an aperture located at said first of said arcuate ends and each having an axis of directivity at said ends substantially parallel to said plane of substantial mirror symmetry, each said hollow wave guide means having contiguous walls tapered to a common ridge at said aperture, and second transmission line means in energy exchanging relation at a second of said arcuate ends with said parallel plate transmission line means.
Claim 2
Dependent Claim
207 words
Apparatus having focal properties for collimation and transfer of high frequency energy comprising: spaced conducting wall means having nesting dome-shaped surfaces with a common axis of substantial symmetry and defining therebetween a geodesic energy propagation means, opposed parallel plate transmission line means in direct energy exchanging relation with said geodesic energy propagation means, each said opposed parallel plate transmission line means having an arcuate open end remote from said geodesic energy propagation means, said geodesic energy propagation means, said parallel plate transmission line means, and said arcuate ends forming a composite energy propagation structure having a plane of substantial mirror symmetry, first transmission line means in energy exchanging relation at a first of said arcuate ends with said parallel plate transmission line means, said first transmission line means comprising a plurality of hollow wave guide means each having an aperture located at said first of said arcuate ends and each having an axis of directivity at said ends substantially parallel to said plane of substantial mirror symmetry, each said hollow wave guide means having contiguous walls tapered to a common ridge at said aperture, and second transmission line means in energy exchanging relation at a second of said arcuate ends with said parallel plate transmission line means.
Claim 3
Dependent Claim
58 words
Apparatus as described in claim 1 wherein said second transmission line means comprises a plurality of hollow wave guide means each having a flared aperture located at said second of said ends and each having an axis of directivity at said ends directed substantially to intersect said common axis of substantial symmetry of said geodesic energy propagation means.
Claim 4
Dependent Claim
35 words
Apparatus as described in claim 2 wherein one of said opposed parallel plate transmission line means contains, adjacent its arcuate end, grating means for modifying the plane of polarization of high frequency energy passing therethrough.
Claim 5
Dependent Claim
174 words
Apparatus having focal properties for collimation and transfer of high frequency energy comprising: spaced conducting wall means having nesting dome-shaped surfaces with a common axis of substantial symmetry and defining therebetween a geodesic energy propagation means, opposed parallel plate transmission line means in direct energy exchanging relation with said geodesic energy propagation means, each said opposed parallel plate transmission line means having an arcuate open end remote from said geodesic energy propagation means and being further defined by wall means substantially perpendicular to said parallel plates for supporting high frequency energy absorbing material extending within said parallel plate transmission line means, said geodesic energy propagation means, said parallel plate transmission line means, and said arcuate ends forming a composite energy propagation structure having a plane of substantial mirror symmetry, first transmission line means in energy exchanging relation at a first of said arcuate ends with said parallel plate transmission line means, and second transmission line means in energy exchanging relation at a second of said arcuate ends with said parallel plate transmission line means.
Claim 6
Dependent Claim
174 words
Apparatus having focal properties for collimation and transfer of high frequency energy comprising: spaced conducting wall means having nesting dome-shaped surfaces with a common axis of substantial symmetry and defining therebetween a geodesic energy propagation means, opposed parallel plate transmission line means in direct energy exchanging relation with said geodesic energy propagation means, each said opposed parallel plate transmission line means having an arcuate open end remote from said geodesic energy propagation means and being further defined by wall means substantially perpendicular to said parallel plates for supporting high frequency energy absorbing material extending within said parallel plate transmission line means, said geodesic energy propagation means, said parallel plate transmission line means, and said arcuate ends forming a composite energy propagation structure having a plane of substantial mirror symmetry, first transmission line means in energy exchanging relation at a first of said arcuate ends with said parallel plate transmission line means, and second transmission line means in energy exchanging relation at a second of said arcuate ends with said parallel plate transmission line means.
Claim 7
Dependent Claim
201 words
Apparatus having focal properties for collimation and transfer of high frequency energy comprising: spaced conducting wall means having nesting dome-shaped surfaces with a common axis of substantial symmetry and defining therebetween a geodesic energy propagation means, opposed parallel plate transmission line means in direct energy exchanging relation with said geodesic energy propagation means, each said opposed parallel plate transmission line means having an arcuate open end remote from said geodesic energy propagation means, said geodesic energy propagation means, said parallel plate transmission line means, and said arcuate ends forming a composite energy propagation structure having a plane of substantial mirror symmetry, first transmission line means in energy exchanging relation at a first of said arcuate ends with said parallel plate transmission line means, second transmission line means in energy exchanging relation at a second of said arcuate ends with said parallel plate transmission line means, an array of transmission line antenna elements, said array having a contour matching that of said first arcuate end, and means for individually connecting said transmission line antenna elements to said first transmission line means so dimensioned that the signal propagation paths from any of said antenna elements to said first arcuate end are substantially equal.
Claim 8
Dependent Claim
201 words
Apparatus having focal properties for collimation and transfer of high frequency energy comprising: spaced conducting wall means having nesting dome-shaped surfaces with a common axis of substantial symmetry and defining therebetween a geodesic energy propagation means, opposed parallel plate transmission line means in direct energy exchanging relation with said geodesic energy propagation means, each said opposed parallel plate transmission line means having an arcuate open end remote from said geodesic energy propagation means, said geodesic energy propagation means, said parallel plate transmission line means, and said arcuate ends forming a composite energy propagation structure having a plane of substantial mirror symmetry, first transmission line means in energy exchanging relation at a first of said arcuate ends with said parallel plate transmission line means, second transmission line means in energy exchanging relation at a second of said arcuate ends with said parallel plate transmission line means, an array of transmission line antenna elements, said array having a contour matching that of said first arcuate end, and means for individually connecting said transmission line antenna elements to said first transmission line means so dimensioned that the signal propagation paths from any of said antenna elements to said first arcuate end are substantially equal.
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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) | 1975-10-10 | 1976-04-10 | 1976-10-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-10-10 | 1980-04-10 | 1980-10-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-10-10 | 1984-04-10 | 1984-10-10 | $7700.00 | Window Closed / Lapsed |