US3833909A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Compact wide-angle scanning antenna system
Assignee: SP-MICROWAVE Inc
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Filing: 1973-05-07
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Granted: 1974-09-03
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Expires: 1993-05-07
Abstract
Abstract A compact, rapidly scannable, high frequency directional antenna system provides wide-angle space scanning in one or more dirctions by employing a moving feed for commutating energy flow through a wave guide array illuminating or receiving high frequency energy from a cylindrical or spherical energy collimator.
Inventors
- 👤 A Schaufelberger
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 10:57
CPC Classifications
H; H01; H01Q; H01Q3/00; H01Q3/24; H01Q3/245; H01Q3/12; H01Q3/14
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
114 words
Antenna apparatus comprising: dielectric electromagnetic wave collimating means having substantially spherical boundary means, electromagnetic wave distributor means having energy exhanging aperture means movable along spherical sector means, and multiple transmission line means extending in energy exchanging relation between a portion of said spherical boundary means and a portion of said spherical sector means, said multiple transmission line means including: an array of wave guides in parallel alignment, each of said wave guides having wall means in contiguous relation with wall means of an adjacent one of said wave guides, and delay means within said array of wave guides adapted for making the electromagnetic wave propagation times through all of said wave guides substantially equal.
Claim 2
Dependent Claim
114 words
Antenna apparatus comprising: dielectric electromagnetic wave collimating means having substantially spherical boundary means, electromagnetic wave distributor means having energy exhanging aperture means movable along spherical sector means, and multiple transmission line means extending in energy exchanging relation between a portion of said spherical boundary means and a portion of said spherical sector means, said multiple transmission line means including: an array of wave guides in parallel alignment, each of said wave guides having wall means in contiguous relation with wall means of an adjacent one of said wave guides, and delay means within said array of wave guides adapted for making the electromagnetic wave propagation times through all of said wave guides substantially equal.
Claim 3
Dependent Claim
53 words
Apparatus as described in claim 1 wherein said array of wave guides has first and second opposed concave energy exchanging ends. said first energy exchanging end being disposed in energy exchanging relation with said dielectric electromagnetic wave collimating means, and said second energy exchanging end forming said portion of said circular sector means.
Claim 4
Dependent Claim
27 words
Apparatus as described in claim 2 wherein said array of wave guides is equipped with impedance matching means at said first and second opposed energy exchanging ends.
Claim 5
Dependent Claim
15 words
Apparatus as described in claim 2 wherein said delay means comprise dielectric phase delay means.
Claim 6
Dependent Claim
24 words
Apparatus as described in claim 2 wherein said electromagnetic wave distributor means comprises wave guide means journalled for movement about at least one axis.
Claim 7
Dependent Claim
26 words
Apparatus as described in claim 2 wherein said first and second opposed concave energy exchanging ends are each in the forms of segments of spherical surfaces.
Claim 8
Dependent Claim
22 words
Apparatus as described in claim 6 wherein said dielectric electromagnetic wave collimating means is a solid sphere of low loss dielectric material.
Claim 9
Dependent Claim
37 words
Apparatus as described in claim 7 wherein said solid sphere of low loss dielectric material has an effective index of refraction n which varies with the normalized sphere radius r as: n Square Root 2 - r2
Claim 10
Dependent Claim
26 words
Apparatus as described in claim 7 wherein said electromagnetic wave distribution means comprises wave guide means journalled for movement about first and second mutually perpendicular axes.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-09-02 | 1978-03-04 | 1978-09-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-09-02 | 1982-03-04 | 1982-09-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-09-02 | 1986-03-04 | 1986-09-03 | $7700.00 | Window Closed / Lapsed |