Patent US4520363A successfully refreshed from Google Patents.
US4520363A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Omnidirectional vertical antenna with improved high-angle coverage
Assignee: Arris Technology Inc
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Filing: 1983-03-16
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Granted: 1985-05-28
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Expires: 2003-03-16
Abstract
Abstract An antenna structure includes a radiator element secured at one end to a ground plane. Two conducting plates separated by an axial spacer are secured to the opposite end of the radiator element.
Inventors
- 👤 Melvin H. Wachspress
- 👤 Walter Abramowitz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 21:04
CPC Classifications
H; H01; H01Q; H01Q9/00; H01Q9/04; H01Q9/30; H01Q9/42
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
68 words
An antenna structure comprising an inverted conical monopole, a ground plane secured to one end of said monopole, a first conducting plate having a diameter greater than that of the largest diameter of said monopole secured to the other end of said monopole, a second conducting plate, and a spacer interposed between and secured to said first and second plates and axially aligned therewith and with said monopole.
Claim 2
Dependent Claim
68 words
An antenna structure comprising an inverted conical monopole, a ground plane secured to one end of said monopole, a first conducting plate having a diameter greater than that of the largest diameter of said monopole secured to the other end of said monopole, a second conducting plate, and a spacer interposed between and secured to said first and second plates and axially aligned therewith and with said monopole.
Claim 3
Dependent Claim
32 words
The antenna structure of claim 1, in which the diameter of said second plate is less than that of said first plate, but greater than the largest diameter of said conical monopole.
Claim 4
Dependent Claim
25 words
The antenna structure of claim 2, in which the diameters of said first and second plates are both less than that of said ground plane.
Claim 5
Dependent Claim
68 words
An antenna arrangement comprising an inverted conical monopole, a first disc connected to the wider-diameter end of said monopole and having a diameter greater than that of the wider-diameter end of said conical monopole, a second disc, and a spacer interposed between and secured to said first and second discs, said first and second discs and said spacer being coaxial with the vertical axis of said conical monopole.
Claim 6
Dependent Claim
68 words
An antenna arrangement comprising an inverted conical monopole, a first disc connected to the wider-diameter end of said monopole and having a diameter greater than that of the wider-diameter end of said conical monopole, a second disc, and a spacer interposed between and secured to said first and second discs, said first and second discs and said spacer being coaxial with the vertical axis of said conical monopole.
Claim 7
Dependent Claim
32 words
The antenna structure of claim 4, in which the diameter of said second disc is less than that of said first disc, but greater than the largest diameter of said conical monopole.
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) | 1988-05-27 | 1988-11-26 | 1989-05-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-05-27 | 1992-11-26 | 1993-05-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-05-27 | 1996-11-26 | 1997-05-28 | $7700.00 | Window Closed / Lapsed |