US3626418A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Broadband, omnidirectional, horizontally polarized, loop antenna
Assignee: Bendix Corp
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Filing: 1970-03-26
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Granted: 1971-12-07
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Expires: 1990-03-26
Abstract
Abstract A broadband, horizontally polarized, omnidirectional antenna comprising a plurality of parallel-fed loop radiating elements is disclosed. This antenna has particular utility for reception of VHF entertainment broadcasts (Television channels 2-13 and the FM broadcast band).
Inventors
- 👤 Walter Clayton Berryman Jr
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 10:41
CPC Classifications
H; H01; H01Q; H01Q9/00; H01Q9/04; H01Q9/16; H01Q9/28
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
64 words
A broadband, horizontally polarized, omnidirectional antenna comprising: a plurality of electrically and mechanically uniform and continuous loop radiating elements but having diverse diameters, said elements positioned in vertically spaced substantially horizontal planes to thereby define a right conical surface, a pair of uniformly tapered feedlines, said feedlines interconnecting said radiating elements electrically in parallel, and means for connecting said feedlines to a transmission line.
Claim 2
Dependent Claim
64 words
A broadband, horizontally polarized, omnidirectional antenna comprising: a plurality of electrically and mechanically uniform and continuous loop radiating elements but having diverse diameters, said elements positioned in vertically spaced substantially horizontal planes to thereby define a right conical surface, a pair of uniformly tapered feedlines, said feedlines interconnecting said radiating elements electrically in parallel, and means for connecting said feedlines to a transmission line.
Claim 3
Dependent Claim
51 words
The antenna of claim 1 wherein a first loop of said plurality of loops has a circumference equal to one-half wavelength at the lowest desired antenna operating frequency, and a second loop of said plurality of loops has a circumference equal to one-half wavelength at the highest desired antenna operating frequency.
Claim 4
Dependent Claim
28 words
The antenna of claim 2 wherein said feedlines are disposed along said conical surface in conically parallel relationship whereby said conical surface determines said taper of said feedlines.
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) | 1974-12-06 | 1975-06-07 | 1975-12-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-12-06 | 1979-06-07 | 1979-12-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-12-06 | 1983-06-07 | 1983-12-07 | $7700.00 | Window Closed / Lapsed |