Patent US3623112A successfully refreshed from Google Patents.
US3623112A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Combined dipole and waveguide radiator for phased antenna array
Assignee: Bendix Corp
•
Filing: 1969-12-19
•
Granted: 1971-11-23
•
Expires: 1989-12-19
Abstract
Abstract An antenna includes a waveguide slot aperture radiator and a dipole radiator centrally located therein and located longitudedly with respect to the waveguide a quarter wavelength from the aperture. Each radiator is separately excited.
Inventors
- 👤 William Emory Rupp
- 👤 Richard Monroe Cox
- 👤 Robert Alexander Keough
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 23:46
CPC Classifications
H; H01; H01Q; H01Q21/00; H01Q21/24; H01Q21/245; H01Q21/06; H01Q21/061; H01Q21/062; H01Q3/00; H01Q3/26; H01Q9/00; H01Q9/04; H01Q9/06; H01Q9/065
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
228 words
An antenna for radiating a predetermined frequency comprising: a rectangular waveguide having one closed end and an open end comprising a slot aperture; a printed circuit board sandwich assembly having top and bottom exterior surfaces, said assembly being disposed on the neutral axis of said waveguide and having a first end on which is disposed a strip line dipole antenna element, said first end being displaced out of said waveguide from said slot aperture so that the phase centers of said slot aperture and said dipole coincide, said assembly additionally including first and second ground planes disposed on said top and bottom exterior surfaces respectively within said waveguide and stripline means connecting said dipole element to said ground planes; waveguide end plate means fOr closing the end of said waveguide opposite said slot aperture, said end plate means having an opening coinciding with the neutral axis of said waveguide through which said printed circuit board assembly is disposed; first means located within said waveguide for exciting said waveguide; first conductor means extending from said first means along a path between said ground planes and through said end plate opening; second means for exciting said dipole antenna element located in close proximity to said dipole antenna element, and, second conductor means extending from said second means along a path between said ground planes and through said end plate opening.
Claim 2
Dependent Claim
228 words
An antenna for radiating a predetermined frequency comprising: a rectangular waveguide having one closed end and an open end comprising a slot aperture; a printed circuit board sandwich assembly having top and bottom exterior surfaces, said assembly being disposed on the neutral axis of said waveguide and having a first end on which is disposed a strip line dipole antenna element, said first end being displaced out of said waveguide from said slot aperture so that the phase centers of said slot aperture and said dipole coincide, said assembly additionally including first and second ground planes disposed on said top and bottom exterior surfaces respectively within said waveguide and stripline means connecting said dipole element to said ground planes; waveguide end plate means fOr closing the end of said waveguide opposite said slot aperture, said end plate means having an opening coinciding with the neutral axis of said waveguide through which said printed circuit board assembly is disposed; first means located within said waveguide for exciting said waveguide; first conductor means extending from said first means along a path between said ground planes and through said end plate opening; second means for exciting said dipole antenna element located in close proximity to said dipole antenna element, and, second conductor means extending from said second means along a path between said ground planes and through said end plate opening.
Claim 3
Dependent Claim
21 words
An antenna as recited in claim 1 wherein said dipole antenna element is displaced approximately one-quarter wavelength out of said waveguide.
Claim 4
Dependent Claim
74 words
An antenna as recited in claim 1 with additionally: a source of predetermined frequency; an input terminal connected to said source; first and second output terminals; means for splitting said predetermined frequency into first and second signals and applying said signals to said first and second output terminals respectively; means connected between said first output terminal and said first conductor means; and, means connected between said second output terminal and said second conductor means.
Claim 5
Dependent Claim
38 words
An antenna as recited in claim 3 with additionally: means for selectively and exclusively connecting said input terminal to said first output terminal; and, means for selectively and exclusively connecting said input terminal to said second output terminal.
Claim 6
Dependent Claim
23 words
An antenna as recited in claim 3 with additionally phase-shifter means for shifting the phase of one of said first and second signals.
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) | 1974-11-22 | 1975-05-24 | 1975-11-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-11-22 | 1979-05-24 | 1979-11-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-11-22 | 1983-05-24 | 1983-11-23 | $7700.00 | Window Closed / Lapsed |