US3134979A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Tapered ladder log periodic antenna
Assignee: Granger Associates Inc
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Filing: 1961-01-27
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Granted: 1964-05-26
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Expires: 1981-01-27
Abstract
No abstract record available.
Inventors
- 👤 Ross L Bell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 00:03
CPC Classifications
H; H01; H01Q; H01Q11/00; H01Q11/02; H01Q11/10
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
98 words
A BROADBAND ANTENNA COMPRISING A STRUCTURE DIVERGING FROM A VERTEX HAVING A PLURALITY OF MUTUALLY SPACED SIMILAR FOLDED RADIATORS, EACH SUCH RADIATOR CONSISTING OF A PAIR OF SPACED PARALLEL ANTENNA WIRES AND CONDUCTING MEANS ELECTRICALLY INTERCONNECTING THE ENDS OF SAID WIRES, THE SAID RADIATORS BEING SUCCESSIVELY ARRANGED IN A PLANE SUCH THAT THE DIMENSIONS OF THE RADIATORS AND THEIR SPACINGS INCREASE UNIFORMLY AND PROPORTIONALLY WITH INCREASE IN DISTANCE FROM THE VERTEX, A FEED LINE AND CAPACITY COUPLING MEMBERS INTERCONNECTING ONE ANTENNA WIRE ONLY OF EACH OF SAID FOLDED RADIATORS TO SAID FEED LINE FOR PASSING ALTERNATING CURRENTS THEREBETWEEN.
Claim 2
Dependent Claim
98 words
A BROADBAND ANTENNA COMPRISING A STRUCTURE DIVERGING FROM A VERTEX HAVING A PLURALITY OF MUTUALLY SPACED SIMILAR FOLDED RADIATORS, EACH SUCH RADIATOR CONSISTING OF A PAIR OF SPACED PARALLEL ANTENNA WIRES AND CONDUCTING MEANS ELECTRICALLY INTERCONNECTING THE ENDS OF SAID WIRES, THE SAID RADIATORS BEING SUCCESSIVELY ARRANGED IN A PLANE SUCH THAT THE DIMENSIONS OF THE RADIATORS AND THEIR SPACINGS INCREASE UNIFORMLY AND PROPORTIONALLY WITH INCREASE IN DISTANCE FROM THE VERTEX, A FEED LINE AND CAPACITY COUPLING MEMBERS INTERCONNECTING ONE ANTENNA WIRE ONLY OF EACH OF SAID FOLDED RADIATORS TO SAID FEED LINE FOR PASSING ALTERNATING CURRENTS THEREBETWEEN.
References Cited (Backward Citations)
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Cited
US3079602A
Cited
US2977597A
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US2989749A
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US3056960A
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US2981951A
Cited
US3059234A
Cited
US3101474A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-05-26 | 1967-11-25 | 1968-05-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-05-26 | 1971-11-25 | 1972-05-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-05-26 | 1975-11-25 | 1976-05-26 | $7700.00 | Window Closed / Lapsed |