US4138683A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Short radiating horn with an S-shaped radiating element
Assignee: RCA Corp
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Filing: 1977-07-21
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Granted: 1979-02-06
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Expires: 1997-07-21
Abstract
Abstract The rear wall of a horn antenna is a substrate with a phase shifter circuit thereon. Power from the phase shifter is radiated by the horn via a probe that has the general shape of a hook.
Inventors
- 👤 Willard T. Patton
- 👤 Norman R. Landry
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 18:52
CPC Classifications
H; H01; H01Q; H01Q13/00; H01Q13/02; H01Q3/00; H01Q3/26; H01Q3/30; H01Q3/34; H01Q3/36
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
116 words
A radiating element of a phased array radar, comprising: a substantially rectangular alumina substrate; four metal rectangular walls connected to said substrate to define a parallelepiped with an open side opposite from said substrate; an integrated phase shifter that provides current in response to an excitation signal and is operable to cause said current to have a selected phase in response to a selection signal, said phase shifter being disposed upon said substrate within said parallelepiped; and a metal wire probe connected to said phase shifter on said substrate and extending therefrom to the interior of said parallelepiped, said probe having the general shape of a hook with a shank that is parallel to said substrate.
Claim 2
Dependent Claim
116 words
A radiating element of a phased array radar, comprising: a substantially rectangular alumina substrate; four metal rectangular walls connected to said substrate to define a parallelepiped with an open side opposite from said substrate; an integrated phase shifter that provides current in response to an excitation signal and is operable to cause said current to have a selected phase in response to a selection signal, said phase shifter being disposed upon said substrate within said parallelepiped; and a metal wire probe connected to said phase shifter on said substrate and extending therefrom to the interior of said parallelepiped, said probe having the general shape of a hook with a shank that is parallel to said substrate.
Claim 3
Dependent Claim
16 words
The radiating element of claim 1 additionally comprising an alumina wall that covers said open side.
Claim 4
Dependent Claim
26 words
The radiating element of claim 1 wherein said probe is substantially within a plane between two of said metal walls that are opposed to each other.
References Cited (Backward Citations)
US3534376A
Cited
US3778717A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1982-02-05 | 1982-08-07 | 1983-02-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-02-05 | 1986-08-07 | 1987-02-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-02-05 | 1990-08-07 | 1991-02-06 | $7700.00 | Window Closed / Lapsed |