US4334229A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Leaky waveguide continuous slot antenna
Assignee: United States Department of the Navy
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Filing: 1968-11-12
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Granted: 1982-06-08
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Expires: 1988-11-12
Abstract
Abstract A continuous slot leaky waveguide antenna for radiating radio frequency sohat the far E-field elevation pattern will closely follow a predicted pattern.
Inventors
- 👤 Arthur P. Boblett
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 15:05
CPC Classifications
H; H01; H01Q; H01Q13/00; H01Q13/20; H01Q13/22
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
136 words
A continuous-slot leaky-waveguide antenna in which arbitrary current functions can be imposed which leads to improved and predictable far E-field elevation patterns, comprising: (a) a section of rectangular waveguide, (b) a long straight continuous slot cut in one broad face of said waveguide along the centerline passing through each end of said waveguide section, (c) at any point along the length of said straight slot one of the narrow sides of said waveguide section being offset to form a curve away from said centerline while the other narrow side of the waveguide being offset to curve toward said centerline, (d) the offset of each side and the total distance between said sides along the length of said slot being varied for adjusting the phase of energy radiated and determining the desired far E-field elevation pattern desired.
Claim 2
Dependent Claim
136 words
A continuous-slot leaky-waveguide antenna in which arbitrary current functions can be imposed which leads to improved and predictable far E-field elevation patterns, comprising: (a) a section of rectangular waveguide, (b) a long straight continuous slot cut in one broad face of said waveguide along the centerline passing through each end of said waveguide section, (c) at any point along the length of said straight slot one of the narrow sides of said waveguide section being offset to form a curve away from said centerline while the other narrow side of the waveguide being offset to curve toward said centerline, (d) the offset of each side and the total distance between said sides along the length of said slot being varied for adjusting the phase of energy radiated and determining the desired far E-field elevation pattern desired.
Claim 3
Dependent Claim
19 words
An antenna as in claim 1 wherein said waveguide section is completely filled with dielectric of desired dielectric constant.
Claim 4
Dependent Claim
23 words
An antenna as in claim 1 wherein said waveguide section is provided with a dielectric cover of a desired thickness and dielectric constant.
Claim 5
Dependent Claim
33 words
An antenna as in claim 1 wherein said waveguide section is provided with a dielectric cover of desired thickness and dielectric constant, and is completely filled with dielectric material of desired dielectric constant.
References Cited (Backward Citations)
US2937373A
Cited
US2990547A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1985-06-07 | 1985-12-07 | 1986-06-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1989-06-07 | 1989-12-07 | 1990-06-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1993-06-07 | 1993-12-07 | 1994-06-08 | $7700.00 | Window Closed / Lapsed |